JPH0453801Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a belt length adjustment device attached to a belt-fastened member such as goggles, masks, swimming fins, etc.

[Conventional technology and its problems]

Generally, as shown in FIG. 7, goggles include a lens (not shown) attached to the front of a cylindrical mask 30 made of a flexible material such as rubber, and belt length adjustment devices on both sides of the mask 30. Both ends of the belt 32 are connected via a belt 31.

In the goggles described above, the adjuster 31
The length of the belt 32 is adjusted by the operation to improve the adhesion of the mask 30 to the face. However, as shown in FIG. Since both ends of the guide shaft 36 passed between the lower shaft 35 are slidably provided along the upper shaft 34 and the lower shaft 35, there are the following disadvantages.

That is, the above-mentioned adjustment tool is constructed by folding back the tip of the belt 32 inserted inside the ring body 33 along the guide shaft 36, and inserting the tip between the side shaft 37 of the ring body 33 and the belt 32. The folded portion of the belt 32 is held between the guide shaft 36 and the side shaft 37, and the belt 3 is
However, since slipping easily occurs between the guide shaft 36 and the side shaft 37 and the belt 32, there is a problem that the belt 32 is easily loosened.

In addition, when adjusting the length of the belt 32, it is necessary to slide the guide shaft 36 to unlock the belt 32, and after unlocking, pull the tip of the belt to adjust the length in the tightening direction. If an attempt is made to do so, the guide shaft 36 slides in the direction of locking the belt 32 due to contact with the belt 32, resulting in the inconvenience that adjusting the length of the belt in the tightening direction takes a lot of effort.

[Purpose of the invention] Therefore, this invention solves the above-mentioned inconveniences and provides a belt length that allows the length in the tightening direction of a belt attached to a belt-fastened member such as goggles to be adjusted very easily. The purpose of this invention is to provide a device for adjusting the

[Structure of the idea]

In order to achieve the above object, this invention provides operating plates that are slidable back and forth on both sides of a belt-tightened member that is attached by tightening the belt, and the belt-tightened member has a A belt insertion hole is formed within the sliding range of the operation panel, and a plurality of protrusions are provided at required intervals on the tip of one side of the belt that is inserted into the belt insertion hole and folded back. The front part in the belt insertion direction is an inclined surface, and the inner tip of the operation plate is provided with a protrusion that can engage with the protrusion of the belt. An elastic L-shaped engaging pawl is formed on the opposite surface, and a rib is provided on the other opposing surface to engage with the engaging pawl when the tip of the operation plate closes the belt insertion hole. .

[Effect]

When the operation plate is slid toward the back side of the belt-tightened member and the belt insertion hole is closed with the tip of the operation plate, the engaging claw engages with the rib, and the operation plate is inserted into the belt-tightened member. This prevents it from sliding toward the front. At this time, the protrusion of the operation plate engages with the protrusion of the belt inserted into the belt insertion hole, and the belt is prevented from loosening by this engagement.

When the tip of the belt is pulled in the loosening state, the inclined surface of the protrusion formed on the belt slides along the protrusion, and as a result, the length of the belt can be adjusted in the tightening direction.

〔Example〕

Hereinafter, embodiments of this invention will be described based on FIGS. 1 to 6.

As shown in FIGS. 1 and 2, taking goggles as an example, the rear end of a cylindrical mask 1 made of a flexible material such as rubber fits around the eyes of the face. It is formed into a concave curved surface. A lens attachment hole 2 is provided in the front part of the mask 1. In the case of the embodiment, a pair of lens attachment holes 2 are formed on the front left and right sides of the mask 1, but the number of lens attachment holes 2 may be one. An engagement groove 3 is formed on the inner periphery of this lens mounting hole 2.
The outer circumferential portion of the lens 4 is fitted into the outer peripheral portion of the lens 4.

A lens tightening frame 5 that surrounds the outer periphery of the lens 4 is fitted to the front outer side of the mask 1, and a required distance between the rear portions of both sides of the lens tightening frame 5 and both sides of the mask 1 is fitted. There are intervals.

Guide grooves 6 extending from the front surface to the rear surface of the frame 5 are provided on both sides of the lens tightening frame 5.

FIG. 3 shows details of the guide groove 6 section. On the bottom surface of the guide groove 6, there is a split groove 7 extending from the front surface of the lens tightening frame 5 to the center part in the frame width direction at the center in the width direction, and a belt insertion hole 8 perpendicular to the end of the split groove 7. is provided. Further, an upper guide protrusion 9 and a lower guide protrusion 10 parallel to the split groove 7 are formed at the upper and lower parts of the split groove 7, and the upper surface of the upper guide protrusion 9 and the lower surface of the lower guide protrusion 10 are formed on the upper and lower sides of the guide groove 6. It has a tapered surface 11 that slopes toward the bottom surface.

Furthermore, a plurality of ribs 12 are formed at equal intervals between the upper guide protrusion 9 and the lower guide protrusion 10.

As shown in FIG. 2, a plurality of protrusions 14 are formed at equal intervals on the tip of one side of the belt 13 which is inserted into the belt insertion hole 8 from the inner surface of both sides of the lens tightening frame 5 and folded back. The front portion of each protrusion 14 in the belt insertion direction is formed into an inclined surface 15.

As shown in FIG. 4, an operation plate 16 is fitted into the guide groove 6 of the lens tightening frame 5. As shown in FIG.

FIG. 6 shows details of the operation panel 16. A pair of engagement protrusions that fit on the outside of the pair of guide protrusions 9 and 10 are provided on the inner surface of the operation plate 16, and an inner surface of the engagement protrusion 17 is provided with a pair of guide protrusions 9 and 10, respectively. 10 and can slide along the tapered surface 11. Further, the surface of the engaging protrusion 17 facing the guide protrusions 9 and 10 becomes an inclined cam surface 18 that is inclined toward the insertion direction of the operating plate 16, and when the operating plate 16 is inserted, the inclined cam surface 18 is a pair of guide protrusions 9, 10
It is designed to draw the body inward.

Note that the surfaces of the guide protrusions 9 and 10 facing the engagement protrusion 17 may be made into inclined cam surfaces, or the opposing surfaces of the guide protrusions 9 and 10 and the engagement protrusion 17 may be made into inclined cam surfaces.

A stopper 1 is provided at the rear end of the inner surface of the operation plate 16.
9 is provided, and when the operation plate 16 is slid to a position where the stopper 19 fits into the engagement recess 20 formed in the front part of the guide groove 6 (see FIG. 4), the front part of the operation plate 16 in the insertion direction closes the belt insertion hole 8, and the protrusion 21 formed in the insertion direction engages with the protrusion 14 of the belt 13.

In addition, a U-shaped groove 2 is provided in the center of the operation panel 16.
2, an L-shaped engaging claw 23 is provided;
The bent piece portion 24 at the tip of the engaging claw 23 has a rounded tip. This engaging claw 23 can be engaged with the rib 12, and this engagement prevents the operation plate 16 from moving toward the front of the lens tightening frame 5.

The goggles shown in the examples have the above structure,
The belt 13 inserted into the belt insertion hole 8 from the side inner surface of the lens tightening frame 5 and folded back is locked by the slide of the operation plate 16 fitted into the guide groove 6.

Now, when the operation plate 16 is slid toward the rear surface of the lens tightening frame 5, a pair of engagement protrusions 17
slides along the guide protrusions 9, 10 that fit inside the guide protrusions 9, 10, and draws the pair of guide protrusions 9, 10 inward. Therefore, the diameter of the lens tightening frame 5 is reduced, and the front outer circumference of the mask 1 is pushed inward by the diameter reduction, so that the inner circumference of the lens attachment hole 2 comes into close contact with the outer circumference of the lens 4. Therefore, the space between the lens 4 and the lens mounting hole 2 is well sealed.

The stopper 19 of the operation plate 16 engages with the engagement recess 20.
When the operation plate 16 is slid to the position where it fits into the belt 13, the belt insertion hole 8 is closed at the front of the operation plate 16 and the protrusion 21 of the operation plate 16 is inserted into the belt 13, as shown in FIG. It engages with the protrusion 14 (see Figure 2). This engagement prevents the belt 13 from moving in the loosening direction. At this time, the engaging claw 23 engages with the rib 12 to prevent the operation plate 16 from moving.

When the belt 13 is installed as described above,
When the folded end of the belt 13 is pulled, the inclined surface 15 formed on the protrusion 14 of the belt 13 moves along the tip surface of the protrusion 21 and passes the position of the protrusion 21. Therefore, the length of the belt 13 in the tightening direction can be adjusted as desired, and the length in the tightening direction can be adjusted while the belt 13 is engaged with the outer periphery of the head.

In addition, when adjusting the length of the belt 13 in the loosening direction, move the operation plate 16 toward the front of the lens tightening frame 5, and insert the operation plate 16 from the belt insertion hole 8.
The length of the belt 13 is adjusted with the leading end of the belt 13 separated.

In the case of the embodiment, guide grooves are formed on both side surfaces of the lens tightening frame, but the guide grooves may be omitted.

Furthermore, although the goggles have been described as a belt-fastened member, the belt-fastened member is not limited to this.
For example, it may be a mask, swimming flippers, etc.

〔effect〕

As described above, in this invention, when the operation plate is slid to the position where the tip of the operation plate closes the belt insertion hole, the protrusion formed on the inner surface of the tip of the operation plate engages with the protrusion of the folded belt. Furthermore, since the engaging pawl engages with the rib and prevents the operating plate from sliding, it is possible to reliably prevent the belt from moving in the loosening direction.

In addition, since the front part of the protrusion formed on the belt in the belt insertion direction is an inclined surface, when the protrusion is engaged with the protrusion, by pulling the folded part of the belt, the belt can be moved in the tightening direction. It can be moved. Therefore, the length of the belt in the tightening direction can be adjusted very easily, and the length can be adjusted while the belt is engaged with the head or the like.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the belt length adjusting device according to this invention, Fig. 2 is a cross-sectional view taken along the - line of Fig. 1, and Fig. 3 is a mask and lens tightening device. An exploded perspective view showing a part of the frame, a belt, and the operation panel; FIG. 4 is an enlarged partially cutaway side view of the same as the above; FIG. 5 is a partially cutaway front view of the same as the above; FIG. , FIG. 7 is a side view showing conventional underwater goggles. 5... Lens tightening frame as a member to be belt tightened, 8... Belt insertion hole, 12... Rib, 1
3...Belt, 14...Protrusion, 15...Slanted surface,
16...operation plate, 21...protrusion, 23...engaging claw.

Claims (1)

[Scope of utility model registration request] An operation plate is provided so as to be slidable forward and backward on both sides of a belt-tightened member that is attached by tightening the belt, and a belt insertion hole is formed in the belt-tightened member within the sliding range of the operation plate. , a plurality of protrusions are provided at required intervals on the tip of one side of the belt inserted into the belt insertion hole and folded back, and the front part of each protrusion in the belt insertion direction is an inclined surface, and the above operation is performed. A protrusion that can be engaged with the protrusion of the belt is provided on the inner tip of the plate, and an elastic L-shaped engagement pawl is formed on one of the opposing surfaces of the operation plate and the belt-fastened member, The belt length adjusting device is provided with a rib on the other opposing surface that engages with the engagement pawl when the tip of the operation plate closes the belt insertion hole.