JP2005348826A - Nonslip belt for shoulder strap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a nonslip belt for a shoulder strap that can bring about an extremely good antislip effect. <P>SOLUTION: The nonslip belt 10 is provided with a strip-shaped base 14 and a large number of protrusions 18 projecting from the surface of the base 14. The protrusions 18 are composed of a soft material and are in an approximately cylindrical or truncated cone shape. The height of the protrusions 18 is 4-6 mm and the diameter of the cross-section of the protrusions 18 is 2-5 mm. The longitudinal length of the belt which the large number of protrusions 18 are formed is to be 250 mm or more. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  [Technical Field] The present invention relates to an anti-slip belt for a shoulder which has a non-slip function in a shoulder strap such as a shoulder bag, a shoulder strap such as a camera, or an attachment that is detachably attached to the shoulder strap.

  Conventionally, various proposals have been made for shoulder straps having this type of anti-slip function, and among them, a structure in which a large number of protrusions are provided in a portion in contact with the shoulder has been proposed.

  For example, the device described in Patent Document 1 (Japanese Utility Model Publication No. 63-194629) discloses a configuration in which a rubber sheet provided with a large number of small protrusions on one side is attached to a portion of the shoulder strap that contacts the shoulder.

  The device described in Patent Document 2 (Japanese Utility Model Publication No. 55-160630) is a flat plate having a length of 85 mm, a width of 48 mm, and a thickness of 0.8 mm, and the head of a round column having a diameter of 3 mm and a height of 3 mm is flattened. A rubber anti-slip device is disclosed in which 10 items are vertically arranged and 3 or 4 rows are formed at equal intervals.

  The device described in Patent Document 3 (Japanese Utility Model Laid-Open No. 6-66354) discloses a configuration in which a slipper made of rubber, fiber or resin material having unevenness is attached to the inside of a shoulder strap. In the drawing, it is disclosed that the length of the uneven portion is 20 cm.

  The device described in Patent Document 4 (Japanese Utility Model Publication No. 59-97037) discloses an anti-slip sheet in which a large number of locking projections are arranged at equal intervals on the surface of a sheet made of synthetic rubber. It is described that the shape of the locking projection is a substantially cylindrical shape, the top is horizontal, and the height of the locking projection is about 1 mm.

  Further, as a configuration other than providing the convex portion, flocking is provided (Patent Document 5 (Japanese Utility Model Laid-Open No. 55-1807)), or hair having unidirectional orientation is attached to the fabric (Patent Document 6 ( JP-A-2000-139542) is known.

  In addition, uneven shoulders of various shapes are also provided on shoulder straps for shoulder bags currently available on the market.

Japanese Utility Model Publication No. 63-194629 Japanese Utility Model Publication No. 55-160630 Japanese Utility Model Publication No. 6-66354 Japanese Utility Model Publication No. 59-97037 Japanese Utility Model Publication No.55-1807 JP 2000-139542 A

  However, even though many proposals have been made in this way, the present situation is that a shoulder belt body that can be surely prevented from slipping has not yet been put into practical use. As a cause of this, it is not sufficient for the present inventor to simply increase the frictional force by providing unevenness, and detailed investigation is necessary for the configuration of the convexity. It came to the conclusion that it was not done enough.

  This invention is made | formed in view of this subject, The objective is to provide the anti-slip | skid strip | belt body for a shoulder which can exhibit a very high anti-slip | skid effect.

In order to achieve the above-mentioned object, the invention according to claim 1 is a non-slip band for a shoulder having a belt-like base portion and a plurality of convex portions protruding from the surface of the base portion.
The convex part is made of a substantially cylindrical or truncated cone shape made of a soft material, the height of the convex part is 4 to 6 mm, the cross-sectional diameter of the convex part is 2 to 5 mm, and a large number of convex parts are formed. The length in the longitudinal direction of the strip of the formed portion is 250 mm or more.

  The invention described in claim 2 is characterized in that the soft material described in claim 1 contains a soft polyvinyl chloride resin as a main component.

  The invention described in claim 3 is characterized in that the top of the convex part described in claim 1 or 2 is not a flat surface but a curved surface.

  The present inventor has found that there is an obvious difference in the effect by appropriately setting the configuration for increasing friction, rather than simply providing irregularities as shown in the conventional publication. . As the configuration, the inventors have found that the shape and dimensions of the convex portions are important. That is, this convex part is made of a substantially cylindrical or frustoconical shape made of a soft material, the height of the convex part is 4 to 6 mm, the diameter of the cross section of the convex part is 2 to 5 mm, and a large number of convex parts By making the length of the formed strip in the longitudinal direction 250 mm or more, it is possible to prevent the belt from slipping off from the shoulder when it is brought into contact with the shoulder.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an overall perspective view of the anti-skid belt for shoulder according to the present invention. In this example, the anti-skid belt 10 for the shoulder strap is configured as a separate body from the shoulder strap 20 such as a sharder back and a camera, and is configured as an attachment that can be attached to and detached from the shoulder strap 20. It is not limited to this, and it is of course possible to construct the shoulder strap 20 integrally.

  The shoulder strap anti-slip strip 10 includes strip-shaped base portions 12 and 14 made of a soft material, and a large number of convex portions 18 projecting integrally from the surface of the base portion 14.

  The base 12 has a configuration in which two sheets are bonded to each other on the upper and lower sides, and the base 14 and the projection 18 are integrally formed on one of the sheets, and the shoulder straps 20 are inserted on both sides in the longitudinal direction. Slits 12a and 12a are formed. Further, as shown in FIG. 2, the other sheet of the base 12 has a plurality of openings 12b and 12, and the shoulder strap 20 inserted through the slit 12a passes through the openings 12b and 12b. The shoulder strap 20 is connected integrally with the anti-slip strip 10 by entering and exiting the inside and outside of the belt 12.

  The base portion 12 is made of a flexible soft material having a hardness (hardness) larger than that of the base portion 14 and the convex portion 18, and the base portion 14 and the convex portion 18 are made of a flexible soft material having a small hardness (hardness). Composed.

  The soft material constituting the base portion 14 and the convex portion 18 includes soft resins mainly composed of a thermoplastic resin such as soft polyvinyl chloride resin, polypropylene resin and polyethylene resin, natural rubber and synthetic rubber (including silicone rubber). Any material can be used including vulcanized rubber, thermoplastic elastomers and blends thereof. And the hardness of the material which comprises the convex part 18 is good to set it as 20 to 90 degree | times by Shore A hardness.

  The convex portion 18 may have a substantially columnar shape or a truncated cone shape as shown in an enlarged view in FIG. 3, and preferably has a truncated cone shape that gradually decreases in diameter as the distance from the base portion 14 increases as shown in FIG. 3. It is good to do. And it is preferable that the top part of the convex part 18 is not a flat surface but is a bowl-shaped curved surface.

  The dimension of the convex portion 18 is 2 to 5 mm, preferably about 3 mm in diameter at the base portion, and 4 to 6 mm in height. If the diameter decreases from this range and the height decreases and the height increases, the convex portion 18 tends to bend when it comes into contact with the shoulder, so that a sufficient frictional force cannot be obtained and the anti-slip effect is lost. On the other hand, if the diameter is too small, the convex portion 18 penetrates into the shoulder clothes and is not preferable. On the other hand, when the diameter is increased and the height is decreased, the convex portion 18 is hardly deformed, and a sufficient frictional force cannot be obtained and the anti-slip effect is lost. The thickness of the base 14 is preferably about 2 mm.

  As shown in FIG. 4, the interval between the adjacent convex portions 18 may be 5 to 15 mm, preferably about 7 mm to 11 mm, and the average occupation density in the base portion 14 of the convex portion 18 is 7 to 11 mm. It should be about 40%.

  Moreover, the length of the longitudinal direction of the part in which the convex part 18 is formed is good to set it as 250 mm or more. As shown in FIG. 5, when the anti-slip strap 10 for the shoulder is in contact with the shoulder, it is important to contact the front, top, and rear of the shoulder, respectively. The length in contact with the substrate is 250 mm or more, preferably 300 mm or more. If it is too short, it hardly touches only the top of the shoulder, which is not preferable.

  In addition, the width of the portion where the convex portion 18 is formed may be set according to the width of the shoulder strap 20 and can be arbitrarily set.

  In the anti-slip belt body 10 for the shoulder configured as described above, with the shoulder strap 20 hung on the user's shoulder, as described above, the convex portions are formed on the front, top, and rear of the user's shoulder. 18 will come into contact. Since this convex part 18 has sufficient height, it can take a sufficient contact area with a contacted part, and since it can contact with moderate pressure, the frictional force is It is high enough. For this reason, even if the shoulder is inclined 45 degrees or more, the shoulder strap 20 does not fall, and the anti-slip belt body 10 for the shoulder strap can be maintained in a stopped state on the shoulder, and has a very high anti-slip effect. It can be demonstrated. Moreover, when the convex part 18 of a moderate dimension contacts a shoulder, the stiff shoulder prevention effect can also be exhibited.

It is the whole perspective view seen from the part side which contacts the shoulder of the non-slip belt | band | zone body for a shoulder by this invention. It is the whole perspective view seen from the surface on the opposite side to FIG. FIG. 3 is an enlarged cross-sectional view of the vicinity of one convex portion of the shoulder strap anti-slip belt body of FIG. 1. It is a partial top view of the anti-slip | skid belt | band | zone body for shoulders of FIG. It is a figure showing the use condition of the anti-slip | skid strip | belt body for shoulders of FIG.

Explanation of symbols

10 Non-slip band for shoulder 12 Base 14 Base 18 Convex

Claims (3)

An anti-slip belt body for a shoulder having a belt-like base portion and a plurality of convex portions protruding from the surface of the base portion,
The convex part is made of a substantially cylindrical or truncated cone shape made of a soft material, the height of the convex part is 4 to 6 mm, the cross-sectional diameter of the convex part is 2 to 5 mm, and a large number of convex parts are formed. A non-slip belt for shoulder straps, wherein the length of the band of the formed portion is 250 mm or more.   The anti-slip strip for a shoulder according to claim 1, wherein the soft material contains a soft polyvinyl chloride resin as a main component. The anti-slip belt for shoulder according to claim 1 or 2, wherein the top of the convex part is not a flat surface but a curved surface.

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