JPH0436648Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention is for attaching to one end of a band and connecting it to the other end of the band or to other bands so that the length can be adjusted. This item relates to a buckle for attaching and connecting the backpack strap.

<Prior Art> As such a buckle, the buckle shown in FIG. 6 is conventionally known.

<Problems to be solved by the invention> In this conventional buckle, a band 12 is passed inside a square frame 11, and pins 14 are inserted into holes 13 that are formed at intervals in the longitudinal direction of the band 12 to attach the band to the buckle. Since the bands are connected, adjustment of the length of the band is determined by the interval between the holes 13 and cannot be finely adjusted.

In addition, in order to change the adjusted length, the pin 14 must be pulled out of the hole it had been inserted into and inserted into another hole, resulting in poor operability.

<Means for Solving the Problems> Therefore, the buckle of the present invention has a flat cylindrical frame through which the band passes, and a pair of elastic arms extending from above and below one end of the cylindrical frame while increasing the distance between them. and an inner body having at least one tooth protruding toward the other end at its free end, and a mounting member for accommodating the inner body so as to be slidable inside from the cylinder frame side and for attaching one end of the band. and a cylindrical main body, and when the inner body is housed inside the cylindrical body, a pair of elastic arms of the inner body slide into contact with each other, and the arms bend against the elasticity and engage the teeth at the free end. The cylindrical body has an upper surface and a lower surface that engage with each other, and there is a space between the cylindrical body and the inner body such that the sliding amount of the inner body is adjusted to a position where the pair of elastic arms protrudes from one end of the cylindrical body, and a position where the inner body is cylindrical. A stopper device is provided between the inner body and the retracted position, and a stopper device is provided in the cylindrical frame of the inner body and engaged with the notch by being pushed into the cylindrical body, and the pair of elastic The present invention is characterized in that a pressing tongue piece is provided to prevent the inner body from which the arm extends out from one end of the cylindrical body from being drawn into the cylindrical body.

<Example> In the illustrated example, 1 is a flat cylindrical body;
2 is an inner body, each of which is molded from plastic.

The cylindrical main body 1 is integrally provided with a bridge-like attachment member 3, and the band A is wrapped around it and attached, for example, by sewing.

The inner body 2 has a flat cylindrical frame 4 through which the band B passes.
A pair of elastic arms 5, 5 extend from the top and bottom of one end of the cylinder frame while increasing the distance between them, and opposing teeth 6 are thickly provided at each free end of the elastic arms. This tooth 6 only needs to be provided on one of the elastic arms.

The inner body 2 is inserted into the cylindrical main body 1 from one end 1' with the cylindrical frame 4 at the beginning. As a result, the elastic arms 5, 5 slide against the upper surface 1a and the lower surface 1b inside the cylindrical body and are deflected toward each other, and when the free ends of both arms enter the cylindrical body, the teeth 6, 6 mesh together.

In this embodiment, the lower surface 1b inside the cylindrical body is a horizontal plane parallel to the upper and lower surfaces of the cylindrical frame 4 of the inner body, but the upper surface 1a has an inclination of about 2° with respect to the lower surface, as described above. When teeth 6 and 6 engage, band B
It is designed so that it bites into.

A pressing tongue piece 7a formed by a U-shaped cut in the lower wall of the cylindrical body 1 as a push-in type movement prevention device 7;
The lower surface of the cylinder frame 4 of the inner body is provided with a notch 7b into which the free end of the pressing tongue piece 7a is caught.

Further, as a stopper device 8, the cylindrical frame 4 of the inner body has a protrusion 8a protruding from the side surface, and the inner side surface of the cylindrical body 1 has one end 1' of the cylindrical body into which the protrusion 8a protrudes.
A longitudinal groove 8b that does not reach as far as the band B, and a wall 8c that closes the other end of the cylindrical body except for the outlet 9 of the band B are provided. Note that the groove 8b opens at the other end of the cylindrical body, but this is only done because of the mold for forming the groove. The wall 8c can be omitted if it can be terminated near the other end in the same way as it was terminated.

When the inner body 2 is inserted from one end of the cylindrical main body 1 into the interior with the cylindrical frame 4 at the beginning, the protrusion 8a protruding from the side surface of the cylindrical frame deforms as it comes into contact with the side surface of the main body 1, and then is inserted into the groove 8b. enter abruptly. Therefore, the inner body 2 moves until the protrusion 8a comes into contact with the end of the groove 8b on the one end side of the cylindrical body, and at this time, the elastic arms 5, 5 are brought out of the body, and the cylindrical frame becomes cylindrical. It moves in the opposite direction until it abuts against the wall 8c of the other end of the main body, at which time the entire interior body 2 is accommodated in the main body.

To connect and fasten the band B, take the elastic arms 5, 5 out of the main body, connect the outlet 9 of the cylindrical main body 1, the cylindrical frame 4 of the inner body, the open elastic arms 5,
After passing the band B between the holes 5 and 5, the inner body 2 is pushed into the cylindrical body. As a result, the upper surface 1 inside the cylindrical body
When the elastic arms 5, 5 slide into contact with the lower surface 1b and the lower surface 1b and bend, and the tip of the cylinder frame 4 contacts the wall 8c and the entire interior body 2 is almost inserted into the cylindrical body, the elastic arms 5, Teeth 6, 6 at the free ends of 5 grip and bite the band B to fasten the band B.

In the embodiment shown in FIGS. 1 to 4, band A is attached to both sides of the lower part of the backpack, for example, and band B is a shoulder strap.

To adjust the length of this backpack band according to your physique, pull it in the left direction of arrow L in FIG. As a result, the inner body, which is engaged with the band B by the teeth 6, 6, also moves to the left in the cylindrical body, and stops when the pair of elastic arms 5, 5 protrudes slightly to the left from the body and opens to a certain extent. From there, press the protrusion 8 on the side of the cylinder frame.
The inner body is further pulled out until the inner body a comes into contact with the end of the groove 8b, and the elastic arms 5, 5 are opened to the maximum. Of course,
If the band B is pulled to the left and the inner body moves to the left until the protrusion 8a comes into contact with the end of the groove 8b, and the elastic arms 5, 5 open to the maximum, then
It is possible to omit pulling out the inner body by hand.

Then, if you want to shorten the length of the backpack band B, pull the band B further to the left by the amount you want to shorten, and conversely, if you want to lengthen it, press the pressing tongue piece 7a with your finger. Hang the free end of the band into the notch 7b of the inner body to prevent the inner body from moving to the right, pull the band B to the right of arrow R in Figure 2 for the required length, and then remove the inner body. Push it into the cylindrical body again.

Bands A and B may be separate pieces like this, but they may also be a series of one piece as shown in FIG.

<Effects of the invention> According to the invention, the length of the band can be adjusted steplessly, and the inner body can be held in the cylindrical main body by a wedge action, so that the band can be strongly held in a connected state. The amount of sliding of the interior body is regulated by a stopper position between the position where the pair of elastic arms exits from one end of the cylindrical body and the position where the entire interior body is accommodated in the cylindrical member. Therefore, the inner body or the cylindrical body will not come apart and be lost.

Also, even if the belt is pulled in the direction in which the inner body is dragged into the cylindrical body, the inner body will not move if the pressing tongue piece is pushed in, so the length can be adjusted by moving only the belt in that direction. can be adjusted.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the first embodiment of the buckle of the present invention in which the bands are connected and fastened, and Figure 2 is a sectional view of the buckle shown in Figure 1 with the elastic arm of the inner body pushed out of the cylindrical body. , FIG. 3 is a sectional view of the buckle shown in FIG. 1 in an exploded state, FIG. 4 is a perspective view of FIG. 3, and FIG. A sectional view of an exploded state of one embodiment of
FIG. 6 is a perspective view of a conventional buckle. In the figure, 1 is a cylindrical main body, 2 is an inner body, 3 is a mounting member, 4 is a cylindrical frame, 5 is an elastic arm, 6 is a tooth, 7 is a push type movement prevention device, and 8 is a stopper device.

Claims (1)

[Claims for Utility Model Registration] It has a flat cylindrical frame through which the band passes, and a pair of elastic arms that extend from above and below one end of the cylindrical frame while increasing the distance between them. An inner body having at least one protruding tooth; and a cylindrical body that slidably accommodates the inner body from the cylindrical frame side and is provided with a mounting member to which one end of the band is attached; The main body has an upper surface and a lower surface in which a pair of elastic arms of the inner body slide into contact when the inner body is accommodated, and the arms bend against the elasticity and engage the teeth at the free end, and Between the cylindrical body and the inner body, the amount of sliding of the inner body is between the position where the pair of elastic arms exits from one end of the cylindrical body and the position where the inner body retracts into the inside of the cylindrical body. In addition to providing a stopper device for regulating the interior body, a cut is made in the cylindrical frame of the inner body, and the cylindrical body is pushed into the cylindrical body to engage with the notch, and the pair of elastic arms are pulled out from one end of the cylindrical body. A buckle characterized in that a pressing tongue piece is provided to prevent the pulled-out inner body from being drawn into the cylindrical body.