JPS6227135Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connector used to removably connect one end of a helmet to a so-called chin strap, other belts, bands, and the like.

Hitherto, a wide variety of connectors of this type have been proposed and put into practical use, but in particular, helmet connectors are designed to prevent the connectors from touching the sides of the wearer's face when the helmet is worn. In cases where the wearer is unable to perform the engagement and disengagement operation while watching the connector, the attachment and disengagement operation is extremely simple, so-called one-touch operation, and the engagement is ensured. something is required. However, in the past, there have been very few devices that can satisfy such requirements with a relatively simple mechanism.

SUMMARY OF THE INVENTION An object of the present invention is to provide a coupling device that can satisfy the above requirements, particularly a coupling device suitable for engaging and disengaging the chin strap of an automobile helmet.

The configuration of the present invention for achieving the above object will be described below based on the illustrated embodiments.

In FIGS. 1 to 3, reference numeral 1 denotes a chin strap of a helmet 2 as an example on which the connector of the present invention is to be attached, and an insertion engagement piece 3 is attached to one end 1a of the chin strap, and an insertion engagement piece 3 is inserted into the other end 16. A sheath body 4 is attached which houses movable engagement pieces 6, 6, which will be described later, for engaging and disengaging the engagement piece 3.

The insertion engagement piece 3 has engagement steps 5, 5 on both sides of the tip.
is provided. The sheath body 4 consists of a base plate 4a and a cover plate 4b, and has an open end surface. Movable engagement pieces 6, 6 are disposed on the base plate 4a, and their central portions are pivotally connected by shafts 7, 7, and actuation pieces 8 are disposed on both sides of the rear end of the movable engagement pieces 6, 6. Its lower end is rotatably fitted into a support hole 9 bored in the substrate 4a. The movable engagement pieces 6, 6 have engagement claws 10 at their tips.
10. Working claws 11a, 1 overlapping each other at the rear end
1b is provided. The actuation piece 8 has a protrusion 1 on the side surface.
2 is provided. Further, the substrate 4a has protrusions 13,
Attach the springs 14, 14 at 13, and attach them to the rear end 1 of the engaging pieces so that the movable engaging pieces 6, 6 rotate in the direction in which the engaging claws 10, 10 approach each other.
5 and 15. A knob 17 is positioned on the upper surface of the shaft hole 16 drilled in the cover plate 4b, and a screw shaft 18 is screwed into the center of the operating piece 8 through the shaft hole drilled in the center of the knob 17 to tighten the knob. 17 and the operating piece 8 are integrally connected, and a spring 19 acting in a counterclockwise direction is interposed inside the knob 17.
Note that 20 indicates a stopper of the actuating piece 8.

In the connector of the present invention having the above-mentioned configuration, when the engaging steps 5, 5 of the insertion engaging piece 3 are pushed into the opening surface of the sheath body 4, the engaging claws 10 of the movable engaging pieces 6, 6 , 10 are separated from each other against the action of the springs 14, 14, and then returned by the action of the springs 14, 14, as shown in FIG.
engage with. In this engaged state, when the knob 17 is rotated clockwise against the action of the spring 19, the actuating piece 8 integrated with the knob 17 moves against the spring 19.
4 and 14 in the same direction, the protrusion 12 pushes the working claw 11a inward, and the working claw 11a pushes the same 11b inward, and the engaging claw 10 , 10 are spaced apart from each other and engage step portions 5,
5 is released, and then the insertion engagement piece 3 is removed from the sheath body 4 and the rotational force on the knob 17 is released, the engagement claws 10, 10 are moved by the action of the springs 14, 14. The actuating pieces 8 are returned to their original positions by the action of the springs 19.

As described above, in the coupling device of the present invention, the engagement between the engagement steps 5, 5 and the engagement claws 10, 10 can be released by rotating the knob 17 on the top surface of the cover plate 4b. Therefore, the manual operation is extremely simple.
Moreover, the engagement will not be released inadvertently unless manual operation is performed. In addition, the mechanism is relatively simple and there are few failures, and it is extremely useful for practical use as a connector for belts, bands, and especially chin straps for automobile helmets.

[Brief explanation of the drawing]

Figure 1 is a front view showing the connector of the present invention attached to the chin strap of a helmet, Figure 2 is a plan view of the connector with the cover plate removed and showing its engaged state, and Figure 3
The figure is a partially sectional side view of the connector. 3... Insertion engagement piece, 4... Sheath body, 5... Engagement stepped portion, 6... Movable engagement piece, 7... Shaft, 8... Actuation piece, 10... Engagement claw, 11a, 11b... Working claw, 12... Projection, 14... Spring, 17
...Pinch, 18... Spiral shaft, 19... Spring.

Claims (1)

[Claims for Utility Model Registration] Insertion engagement piece 3 having engagement steps 5 on both sides of the tip
is disposed within the sheath body 4, has inward engaging claws 10 on both sides of the distal end for engaging and disengaging the engaging stepped portion 5, and has an inward facing engaging claw 10 for engaging and disengaging the engaging stepped portion 5; A pair of movable engagement pieces 6 provided with action by a spring 14
In the coupling device, working claws 11a and 11b are provided at the rear end portions of the pair of movable engagement pieces 6 in the sheath body 4 so as to overlap with each other.
When the pair of movable engagement pieces 6 are rotated by a certain angle against the action of the spring 14, the action claws 11a and 11b act on the engagement stepped portion 5 of the insertion engagement piece 3. and an actuating piece 8 that disengages the engagement claw 10 of the pair of movable engaging pieces 6; is rotatably arranged on the upper surface of the sheath body 4, and is integrally coupled with the actuating piece 8 to rotate it. The above-mentioned coupling device is characterized in that it is provided with an operating knob 17 which is moved and has a spring 19 built in therein which is loaded with energy by the rotation.