JPH0453802Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a belt length adjuster that is attached to goggles, masks, swimming fins, and the like.

[Conventional technology]

As shown in FIG. 1, in swimming fins in which both ends of a belt 2 are connected to the rear portions of both sides of a fin body 1, a length adjustment device for the belt 2 is used so that a fitted state of attachment and detachment can be obtained. The length of the belt 2 can be adjusted according to the size of the foot by operating the adjuster.

As a prior art example of the above-mentioned adjuster, there is one shown in FIG. This adjustment tool is provided with an engagement shaft 33 that is passed between the upper shaft 31 and the lower shaft 32 of the square ring body 30 so as to be movable along the upper shaft 31 and the lower shaft 32,
The belt 2 is wound around the engagement shaft 33, and the folded end of the belt 2 is inserted between the belt 2 and the side shaft 34 of the ring body 30.

[Problem that the invention attempts to solve]

By the way, in the above adjustment tool, the engagement shaft 33 and the side shaft 34 of the ring body 30 are slidably supported.
Hold the folded end of belt 2 with
However, since slipping easily occurs between the engagement shaft 33 and the side shaft 34 and the belt 2, the belt 2 tends to loosen, so it is difficult to stably lock the belt 2 when its length is adjusted. There is an inconvenience that it is not possible.

In addition, when adjusting the length of the belt 2, the locking of the belt 2 is released by sliding the engagement shaft 33, and then the belt 2 is moved in the length direction. 33 is belt 2
Since the belt 2 slides in the direction of locking due to contact with the belt 2, there is also the disadvantage that adjusting the length of the belt 2 is very time consuming.

SUMMARY OF THE INVENTION The object of this invention is therefore to provide a length adjuster which can eliminate the above-mentioned inconveniences, reliably lock the belt in the length adjustment position, and facilitate the adjustment work.

[Means for solving problems]

In order to achieve the above object, this invention provides protrusions at required intervals on one side of the belt in the longitudinal direction, and makes the front part of each protrusion on the belt insertion side an inclined surface, so that the belt can be inserted into the belt. The adjuster main body including the groove is provided with an engagement protrusion that can be engaged with the protrusion on the bottom surface of the belt insertion part of the insertion groove,
A guide shaft for reversing the belt is passed between the centers of both side walls of the insertion groove, and a protrusion of the belt is provided on the inner surface of a cover that is fitted on the outside of the adjuster body and is slidable in the belt insertion direction. The belt is configured to include an engaging protrusion that can be engaged with the belt and that grips the belt with the engaging protrusion of the adjuster main body.

[Effect]

Insert the belt into the insertion groove of the adjuster main body so that the protruding part of the belt faces the insertion groove, fold the tip of the belt back along the guide shaft, then slide the cover and engage the engaging protrusion. When facing the mating protrusions, the folded portion of the belt can be held between the engaging protrusions and the engaging protrusions. At this time, since the protrusion of the belt engages with the engagement protrusion of the adjuster main body and the engagement protrusion of the cover, movement of the belt in the loosening direction can be reliably prevented. Also,
By sliding the cover and separating the engagement protrusion from the engagement protrusion, the belt can be released from being held. Therefore, by moving the belt in the length direction, the length of the belt can be adjusted.

〔Example〕

This embodiment will be explained below based on FIGS. 2 to 6.

As shown in FIG. 2, a large number of protrusions 3 are formed at predetermined intervals in the longitudinal direction of one side of the belt 2 whose both ends are connected to the fin body 1, and each protrusion 3
The front part on the side where the belt is inserted forms an inclined surface 4.

The belt 2 is connected to the fin body 1 via the adjuster body 10 and the cover 20. The width of the adjuster main body 10 gradually increases from one end to the other, and the upper surface has an insertion groove 11 for the belt 2.
is provided, and the insertion groove 11 thereof is opened at the other end of the adjuster main body 10 to serve as an opening for the belt.

An engagement protrusion 12 is provided on the bottom surface of the belt insertion portion of the insertion groove 11, and the engagement protrusion 1
The front part of 2 is an inclined surface 13. Further, a guide shaft 15 for reversing the belt is passed between the upper portions of the center portions of both side walls 14 of the insertion groove 11 .

Further, a guide portion 16 is provided on the outer periphery of the adjuster main body 10 except for the other end. In the case of the embodiment, a step was formed on the lower surface of the adjuster main body 10 and the step was used as the guide part 16. However, a groove was formed on the outer periphery of the adjuster main body 10 except for the other end, and this groove was used as the guide part 16. You can also use it as

The adjuster main body 10 is attached to the fin main body 1. For its attachment, an engagement pin 5 is formed on the side surface of the fin body 1, and the engagement pin 5 is inserted into the engagement hole 17 provided in the adjuster body 10.
A large diameter portion 6 formed at the tip of the insertion groove 11 is engaged with the bottom surface of the insertion groove 11. In addition, the engagement hole 17
a large-diameter hole 1 through which the large-diameter portion 6 can pass through one end;
8, an adjuster main body 10 can be detachably attached.

As shown in FIGS. 4 to 6, the cover 20 includes a peripheral wall 21 that covers one end surface and both side surfaces of the adjuster main body 10, and a protrusion 22 formed on the lower inner surface of the peripheral wall 21 covers the adjuster main body 10. It engages with the guide portion 16 of 10. Therefore, the cover 20 can be removed by sliding the cover 20 with respect to the adjuster main body 10.

An engagement protrusion 23 is provided on the inner surface of the cover 20 so as to face the engagement protrusion 12 of the adjuster main body 10, and the inner surface of the engagement protrusion 23 forms an inclined surface 24.

Now, the large diameter part 6 of the engagement pin 5 is inserted into the large diameter hole 18 of the engagement hole 17, and with the large diameter part 6 passing through the large diameter hole 18, the adjuster main body 10 is inserted into the fin main body 1. By sliding along the side surface, the large diameter portion 6 engages with the bottom surface of the insertion groove 11, and the fin body 1
The adjuster main body 10 can be attached to.

With the opening of the insertion groove 11 of the adjuster main body 10 facing upward or downward, insert the belt 2 into the insertion groove 11 with the protrusion 3 of the belt 2 facing the bottom surface of the insertion groove 11, belt 2
After folding back the tip part along the guide shaft 15,
By attaching the cover 20 to the adjuster main body 10, the belt 2 can be prevented from slipping off.

To attach the cover 20 to the adjuster main body 10, the cover 20 is placed at one end of the adjuster main body 10, and the cover 20 is moved toward the adjuster main body 10 so that the protrusions 22 are engaged with the guide portions 16.

After attaching the cover 20 as described above, when the adjuster main body 10 is rotated approximately 90 degrees around the engagement pin 5, the end of the cover 20 is formed on the side surface of the fin main body 1, as shown in FIG. The cover 20 is engaged with the end surface of the rib 7, and the cover 20 is prevented from coming off by this engagement.

Also, by attaching the cover 20, the belt 2
Folded belt part 2' and engagement belt part 2''
As shown in FIG. do. Therefore, the belt 2 is prevented from loosening.

When the folded belt part 2' is pulled in the above-mentioned loosening state, the inclined surface 4 formed on the protruding part 3 of the belt 2 is moved along the inclined surfaces 13 and 24 of the engaging protrusion 12 and the engaging protruding part 23. The engagement belt 2'' can be shortened by moving the engagement belt 2''.

In addition, by sliding the cover 20, the engaging protrusion 2
3 away from the engagement protrusion 12, the belt 2 is unlocked, so the length of the belt 2 can be adjusted as desired.

In the case of the embodiment, the adjusting device according to this invention is attached to the flipper by engaging the engagement pin 5 with the engaging hole 17 formed in the adjusting device main body 10, but the attachment means of the adjusting device main body 10 is And the object to be attached is not limited to the examples.

〔effect〕

As described above, in this invention, when the belt is inserted into the insertion groove of the adjuster main body, the belt is folded back along the guide shaft, and the cover is attached to the adjuster main body, the engagement protrusion and the engagement Since the protruding part clamps the folded part of the belt, and the engaging protrusion and the engaging protruding part engage with the protruding part of the belt, it is possible to reliably prevent the belt from moving in the direction of loosening, and to securely hold the belt. can be locked to

In addition, since the protruding part of the belt is provided with an inclined surface, when the folded part of the belt is pulled, the above-mentioned inclined surface moves along the engagement protrusion and the engagement protrusion, and when the cover is attached, the belt The length in the tightening direction can be adjusted arbitrarily. Therefore, it is extremely easy to adjust the length of the belt.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a flipper with an adjustment device according to the invention attached, Fig. 2 is an exploded perspective view of the same adjustment device, Fig. 3 is a perspective view showing the above assembly state, and Fig.
The figures are a vertical front view of the same as the above, FIG. 5 is a cross-sectional plan view of the same, FIG. 6 is a vertical cross-sectional side view of the same, and FIG. 7 is a perspective view showing a conventional adjusting device. 2...Belt, 3...Protrusion, 4...Slope,
10... Adjuster main body, 11... Insertion groove, 12...
Engagement protrusion, 15... Guide shaft, 20... Cover, 2
3...Engaging protrusion.

Claims (1)

[Scope of utility model registration request] Protrusions are provided at required intervals in the longitudinal direction of one side of the belt, and the front part of each protrusion on the side where the belt is inserted is an inclined surface, and the adjustment device body equipped with the belt insertion groove has a belt insertion groove. An engagement protrusion capable of engaging with the protrusion is provided on the bottom surface of the insertion groove, and a guide shaft for reversing the belt is passed between the upper portions of the center portions of both side walls of the insertion groove, and The inner surface of the cover, which is fitted to and slidable in the belt insertion direction, has an engagement protrusion that can be engaged with the protrusion of the belt and that clamps the belt with the engagement protrusion of the adjuster main body. A belt length adjuster with a section.