JPS639290Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a mechanism for attaching and detaching the belt for wearing goggles to and from the main body.

(Prior art) This type of device is disclosed in Japanese Utility Model Application No. 58-153817, in which a buckle is connected to goggles through a shaft and a hole, and then rotated to the use position and engaged with a cap. , has a configuration that allows the buckle to be attached to a fixed position while allowing some wobbling.

However, as can be understood from the above, a cap is essential in addition to the goggles and buckle, and therefore the number of parts is large and the structure of each part is complicated. In addition, there is some wobbling at the mounting part, which is undesirable because it makes noise during use and gives an unreliable impression. Furthermore, removing the buckle is also very troublesome.

(Technical Problem) The purpose of the present invention is to provide a goggle belt attachment/detachment mechanism that allows the goggle belt to be attached and detached easily and reliably by rotating the buckle at a predetermined angle when attaching the belt to the goggle body using a buckle. It's about doing.

(Technical Means) That is, the present invention has a fitting hole 2 opened on the side of the goggle body 1, and a fitting shaft protruding from the buckle 4 to which the belt 3 is attached and removably fitting into the fitting hole 2. 5, an engaging claw 6 protruding laterally is provided at the end of the fitting shaft 5, and a recessed groove 7 through which the engaging claw 6 passes is fitted at a position different from the buckle mounting position by a predetermined angle. A stepped portion 11a is formed on the inner edge of the fitting hole 2 and contacts the engaging claw 6 to increase frictional resistance when the buckle 4 is rotated around the fitting shaft 5 to the mounting position. This goggle belt attachment/detachment mechanism is further characterized in that a stopper 8 for defining the buckle 4 in the attachment position is provided on its stepped portion 11a.

(Embodiment) The illustrated embodiment implements the proposed mechanism for two-lens goggles, in which thicker bases 9, 9 are provided on the outside of both sides of the goggle body 1, and a fitting hole 2 is formed in each of the bases 9, 9. The buckle 4 is open and a fitting shaft 5 protruding from the side surface of the buckle 4 to which the belt 3 is attached is detachably attached. The engaging claws 6 are integrally molded in pairs so as to protrude from both ends of the fitting shaft 5, and have a tapered circumferential surface 6a, and the size and shape of the base, the fitting hole 2, and a pair of grooves are similar to each other. The difference in size and shape between 7 and 7 is reduced. Therefore, even if the engaging claw 6 returns to the groove 7, it will not be pulled out immediately.
The tapered peripheral surface 6a facilitates fitting and prevents accidental disconnection. Reference numeral 10 denotes a small protrusion protruding from the inner part of the groove 7 of the fitting hole 2, and since it comes into contact with the end of the engagement claw 6, this also serves the function of preventing the engagement claw 6 from being pulled out. Incidentally, when a pair of engagement claws 6 and grooves 7 are provided one above the other, if the sizes are different, there is no possibility of confusing the upper and lower parts.

On the other hand, a circular recess 11 having a diameter slightly larger than the rotation radius of the engaging claw 6 is provided at the edge of the fitting hole 2 inside the main body, and both sides within the area of this recess 11 are stepped portions 11a. When the engaging claw 6 is turned, the frictional force increases. In other words, the thickness of the stepped portion 11a is slightly thicker than the distance between the lower surface of the buckle 4 and its engagement claw 6. When the fitting hole 2 and its concave groove 7 are provided vertically, the stopper 8 is located at a position where the buckle 4 is moved to a substantially horizontal use position and the engaging pawl 6 is rotated by that amount; in the illustrated embodiment, the stopper 8 is located inside the main body. The stop surface 8a is provided so as to face the upper surface of the outer lower half (or the lower surface of the inner upper half). Of course, the position of the stopper 8 can be changed depending on the positional relationship between the buckle 4 and the engaging claw 6, etc.

The buckle 4 has an insertion hole 12 for the belt 3 at the end,
It has a belt mounting part consisting of a square protrusion 14 on which the hanging shaft 13 and the unevenness 3a for preventing slippage of the belt 3 are caught in the direction of preventing slippage, and furthermore, there is a thin bridge between this mounting part and the fitting shaft 5. 15 to handle bending stress and to make it easier to attach and adjust the length of the belt. 16 is a rib provided on the bridge 15, 17 is a large wide part formed at the end of the belt to prevent it from slipping off, and 17a is a serrated slip stopper provided on the large diameter part 17 that can be attached to the fingertip to increase the tension of the belt when worn. Make it easier to hang. 18 is a lens provided on the front side of the main body 1, 19 is a lens mounting mask, 2
0 is the front locking frame of the mask 19, 21 is the mask 19
22 is a face-contacting seal piece provided on the inner surface of the mask 19 so as to surround both sides and the upper side of the eyes; 23 is a recess provided on the outer surface of the buckle 4, which is used for attaching the seal and attaching/detaching the buckle with a finger. There is a guessing function.

(Function of the invention) In the above structure, in order to attach the buckle 4 to the main body 1, the fitting shaft 5 and its engaging pawl 6 are aligned and inserted into the fitting hole 2 and its groove 7 (the first 5), then turn the buckle 4 backward to bring the engagement pawl 6 into contact with the stopper 8 on the stepped portion 11a. In this state, the engaging claw 6 and the stepped portion 11a are in pressure contact, and together with the positioning of the stopper 8, there is no sudden movement, so the wearer can be worn stably. To remove it, simply turn the buckle 4 in the opposite direction to the above and then pull out the fitting shaft 5. The belt 3 may be hooked onto the hanging shaft 13 so that the unevenness 3a engages with the angular protrusion 14 of the buckle.

(Effect of the invention) Therefore, according to the invention, the fitting shaft 5 and the engagement pawl 6 protruding from the buckle 4 to which the belt 3 is attached are provided in the fitting hole 2 opened in the goggle body 1 and its groove 7. When fitted and rotated by a predetermined angle, the engaging claw 6 hits the stopper 8, so the buckle 4 moves to the mounting position and maintains that position.
At this time, the engaging pawl 6 comes into pressure contact with the stepped portion 11a, increasing the frictional resistance, so that the buckle 4 does not move easily and a very stable mounting state can be obtained. Since it is installed like this, it does not wobble,
Good usability. In addition, the number of mechanical parts is small, consisting of two points, the fitting hole 2 on the main body side and the fitting shaft 5 on the buckle side, and the number of manufacturing parts is small and management is easy. Furthermore, the mounting and dismounting operations are very easy and reliable, and the effect is that it is very easy to use.

[Brief explanation of drawings]

The figures show an embodiment of the goggle belt attaching/detaching mechanism according to the present invention. 4 is a front view of the fitting shaft portion, FIG. 5 is a side view of the fitting shaft in use, and FIG. 6 is a partially cutaway top view. DESCRIPTION OF SYMBOLS 1... Goggle body, 2... Fitting hole, 3... Belt, 4... Buckle, 5... Fitting shaft, 6... Engaging claw, 7... Concave groove, 8... Stopper, 11a...
...Danbe.

Claims (1)

[Scope of claims for utility model registration] (1) Fitting hole 2 opened on the side of goggle body 1
and a fitting shaft 5 that protrudes from a buckle 4 to which the belt 3 is attached and is removably fitted into the fitting hole 2, and an engaging claw 6 that projects laterally at the end of the fitting shaft 5. At the same time, a concave groove 7 is formed in the fitting hole 2 to allow the engaging claw 6 to pass through at a position different from the buckle mounting position by a predetermined angle, and when the buckle 4 is rotated around the fitting shaft 5 to the mounting position. A stepped portion 11a that comes into contact with the engaging claw 6 to increase frictional resistance is provided on the inner edge of the fitting hole 2, and the buckle 4
A goggle belt attachment/detachment mechanism characterized in that a stopper 8 for defining the attachment position is provided on a stepped portion 11a of the stopper 8. (2) The goggle belt attaching/detaching mechanism according to claim 1, wherein the fitting hole 2 has a small protrusion 10 that prevents the engaging claw 6 engaged with the groove 7 from being pulled out. (3) The goggle belt attaching/detaching mechanism according to claim 1 or 2, wherein the engaging claw 6 has a tapered peripheral surface 6a on its outer edge.