JP2016034317A - Braid ring with rubber core contained - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a braid ring with a rubber core contained, a braid ring that has a high tensile strength in a joined part joined with an adhesive and that has a fitting position hardly movable during the use.SOLUTION: A rubber core-contained braid composed of a rubber core and an outer coat braid covering the rubber core is cut at a prescribed length, made the cut sections at both ends joined with each other to form a ring shape. The rubber core is made by bundling six fine rubber braids having a square cross section and, the four of the fine rubber braids are arranged in a square with two and two vertically and horizontally, with the remaining two braids arranged outside the center part of the opposing two sides of the square arrangement. A space between the six fine rubber braids inside a prescribed range from the cut cross sections is impregnated with an adhesive and solidified, as are a space between the periphery and the outer coat braids and also the outer coat braids in the same range. The cut sections at both ends are joined with each other under the foregoing conditions to form the ring.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a stretchable rubber core braid ring used as a hair clasp used by women for binding hair, a fastener for wrapping goods, an arm ornament, and the like.

  Braided rings with rubber cores are widely used as hair clasps, arm ornaments, and article packaging fasteners used when women tie hair. This braided ring with rubber core is obtained by cutting a stretchable rubber cored braid consisting of a rubber core and an outer braided braid covering it to a predetermined length, and joining both cut end faces to form a ring. . As the rubber core, usually one or several rubber cords having a circular cross section are used, and as the outer braid, a plurality of braid members made of several yarn bundles are crossed into a cylindrical shape so as to be stretchable. What has been used is used (for example, Patent Documents 1 and 2).

 By the way, the rubber cored braid ring in which both ends of the short rubber core braid cut into a predetermined length in this manner are joined together with an adhesive to form a ring shape requires a high tensile strength at the joint depending on the application. . Since the cross section of the braided ring with rubber core cannot be so large in appearance as a product, it is not easy to increase the tensile strength of the joint with a small cross section. In the experiments conducted by the inventors, the braided ring with a rubber core using one or several rubber cords having a circular cross section as in the prior art breaks at the joint only by applying a relatively small tensile force. When the fracture surface was investigated in detail, most of the fractures were caused by peeling of the joint between the rubber core and the adhesive. The joint area between the rubber core and the adhesive can be increased by increasing the internal penetration distance of the adhesive from the cut surface toward the length of the rubber core. However, since the portion where the adhesive has been solidified does not expand or contract, it is not preferable to increase the permeation distance because it causes a sense of discomfort due to the difference in texture during use. In addition, it was also confirmed by experiments that a braided ring with a rubber core using a small number of rubber cords has a small elongation rate when pulled with the same force even if the entire cross-sectional area of the rubber cord is the same.

Japanese Patent No. 2936091 Japanese Patent No. 3759436

  The present invention has been made to solve such problems of the prior art, and the problem is that a stretchable rubber core braid composed of a rubber core and an outer braid covering the rubber core is cut into a predetermined length. A braided ring with a rubber core in which both cut end surfaces are joined to each other into a ring shape, the rubber core having a high tensile strength at the joint part joined using an adhesive and the mounting position is difficult to move during use It is to provide an inlaid braid ring.

The invention according to claim 1 for solving the above-mentioned problem is that a rubber core-containing braid consisting of a rubber core and a sheath braid covering the rubber core is cut into a predetermined length, and both end cut surfaces are joined together to form a ring. A braided ring with a rubber core, wherein the rubber core is formed by bundling six thin rubber cords having a square cross section, and the four thin rubber cords are arranged to form 2 × 2 squares. And the remaining two are arranged outside the central part of the two opposite sides of the square arrangement,
Solidify by infiltrating an adhesive into the gap between the six thin rubber cords within a predetermined distance from the cut end surface, the gap between the outer surface of the rubber core and the outer braid, and the gap between the outer braid itself within the same range. In this state, the braided ring with rubber core is characterized in that the cut surfaces at both ends are joined to each other.

  According to such a configuration, the adhesive applied to the cut surfaces at both ends is not only the gap between the outer surface of the rubber core and the outer braid, the gap between the outer braid itself, but also the narrow gap between the thin rubber cords having six square cross sections. Also penetrates. For this reason, since the contact area between the rubber cord and the adhesive is greatly increased as compared with the conventional braided ring with rubber core, the effect of greatly increasing the tensile strength of the joint can be obtained. Furthermore, if it is joined so that the longer side of the elliptical cross section of the braided cord with rubber core faces the center of the ring, the area that comes into contact with the hair or article when used as a hair binding tool or article packaging fastener Is larger than that using a rubber core braid with a circular cross section. For this reason, the effect that it becomes difficult to move an attachment position during use is also acquired.

  According to a second aspect of the present invention, in the braided ring with a rubber core according to the first aspect, the six thin rubber cords having the square cross section are arranged in a rectangle of 3 × 2 vertically and horizontally instead of the arrangement. It is a braided ring with a rubber core characterized by being.

  Even in such a configuration, the contact area between the rubber cord and the adhesive is greatly increased as compared with the conventional braided braid ring with rubber core, so that the effect of greatly increasing the tensile strength of the joint can be obtained.

  The invention according to claim 3 is the braided string with rubber core according to claim 1 or 2, wherein the rubber core composed of the six thin rubber strings having the square cross section is arranged in each arrangement of the thin rubber strings. The rubber cored braid ring is characterized in that the gap between the thin rubber cords with a short width and a short width is fixed with an adhesive before covering with the outer braid so as not to collapse during use.

  If the rubber core has such a configuration, the arrangement of the six thin rubber cords is unlikely to collapse. Therefore, the braided ring with the rubber core adopting the rubber core has the advantage that the effects described in claims 1 and 2 can be reliably obtained. Have

It is an external appearance perspective view of the braided ring 1 with a rubber core which concerns on 1st Embodiment. It is sectional drawing of the braid 2 with a rubber core which comprises the braid ring 1 with a rubber core. It is the cross-sectional view and longitudinal cross-sectional view of the junction part 6 of the braid ring 1 with a rubber core. It is an external appearance perspective view of the braided-ring braid ring 1a which concerns on 2nd Embodiment. It is sectional drawing of the braid 2a with a rubber core which comprises the braid ring 1a with a rubber core. It is the cross-sectional view and longitudinal cross-sectional view of the junction part 6 of the braid ring 1a containing a rubber core. It is a longitudinal cross-sectional view of a rubber string in which the gap between the thin rubber strings 3 with a short width at predetermined intervals is fixed with an adhesive 7.

Hereinafter, structural examples of a braided ring with a rubber core according to the present invention will be described by dividing them into embodiments with reference to the drawings.
(First embodiment)
FIG. 1 is an external perspective view of the braided ring 1 with rubber core according to the first embodiment, and FIG. 2 is a cross-sectional view of the braided rubber string 2 constituting the braided ring 1 with rubber core. It is a cross section along a line. The braided braid ring 1 of the present embodiment employs a braided braid 2 in which a rubber core 4 in which six thin rubber cords 3 having a square cross section are bundled in a predetermined arrangement is covered with an outer braid 5.

  Six thin rubber cords 3 constituting the rubber core 4 are formed in a square section of the same size, and four are arranged in a square of 2 × 2 in the vertical and horizontal directions, and the remaining 2 are opposed to the square arrangement. It is arrange | positioned in the side center part outer side of two sides. The outer peripheral portion of the rubber core 4 arranged and configured in this way is covered with an outer braid 5. The outer braid 5 is formed by twisting a plurality of braids made of several yarn bundles into a tubular shape so as to intersect with each other. The rubber core-containing braid 2 having such a configuration is a position that becomes a shaft core of the braid in a state where the continuous long rubber core 4 composed of the six thin rubber strings 3 arranged as described above is pulled in the longitudinal direction. In this state, it is passed through a string making machine and an outer braid 5 is provided on the outer periphery of the rubber core 4.

  When forming the rubber cored braid ring 1 using the long rubber cored braid 2 configured as described above, the rubber cored braid 2 is first cut into a length corresponding to the shape of the ring and then the short length A braid with rubber core is formed. If fraying or fluffing occurs on the outer braid 5 on the cut surfaces at both ends, they are removed. Next, the adhesive 7 is applied to the both end cut surfaces, and the adhesive 7 penetrates into the braid 2 from the cut end surface to the inside of the braid 2. In this state, the adhesive 7 is solidified while the both end cut end surfaces are abutted against each other. To form a ring. As the adhesive 7, a cyanoacrylate instantaneous adhesive that cures in a short time may be used.

  3 is a cross-sectional view of the joint portion 6, and FIG. 3 (2) is a longitudinal cross-sectional view of the joint portion 6. The adhesive 7 penetrates into the narrow gap between the six thin rubber cords 3, the gap between the braid members constituting the outer braid 5, the narrow gap between the thin rubber cord 3 and the outer braid 5, and the gap between the cut end surfaces at both ends. Solidify in the state of adhesion and bond the two ends together. The completed braided ring 1 with rubber core has an elliptical cross section due to the arrangement of the six thin rubber strings 3 constituting the rubber core 4 in the braid 2 with rubber core, and the longer side of the elliptical cross section is the ring. Join so that it faces the center.

  The braided ring 1 with rubber core of the present embodiment configured as described above has the following advantages and features. The rubber cored braid ring 1 employs a rubber cored braid 2 having a configuration in which a bundle of six rubber strings 3 having a square cross section arranged in a predetermined shape is a rubber core 4 and the outer side is covered with an outer braid 5. Yes. Therefore, the adhesive 7 applied to the cut surfaces of both ends penetrates not only the gap between the outer surface of the rubber core 4 and the outer braid braid and the gap between the outer braid braid 5 itself, but also the narrow gap between the six thin rubber cords 3. For this reason, the contact area between the rubber core 4 and the adhesive 7 is greatly increased as compared with a conventional braided ring with a rubber core using one to several round rubbers.

  Further, a rubber having a square cross section is used as the thin rubber string 3. Since the square cross section has a longer outer periphery than the circular cross section having the same cross sectional area, the use of the rubber having the rectangular cross section makes the contact area between the rubber core and the adhesive larger than in the case of the circular cross section rubber. The breakage when a large tensile force is applied to the joint portion at both ends occurs when the joint portion between the adhesive and the rubber core peels off. For this reason, the braided ring with a rubber core according to this embodiment in which the contact area between the rubber core and the adhesive is increased by adopting six thin rubber strings 6 having a square cross section greatly increases the tensile strength of the joint. Has the advantage of Since the portion where the adhesive has penetrated and solidified does not expand or contract, it causes a sense of incongruity during use. Since the braided ring with rubber core of the present embodiment has a large contact area between the rubber core and the adhesive, the adhesive penetration distance can be shortened when only the same strength needs to be ensured, and the uncomfortable feeling can be alleviated.

  Furthermore, the braided ring 1 with rubber core of this embodiment is joined so that the longer side of the elliptical cross section of the braid 2 with rubber core faces the center of the ring. Therefore, when used as a binding tool for hair or as a fastener for packaging an article, the area in contact with the hair or article is larger than when a braid with a rubber core with a circular cross section is used. It also has the advantage of being difficult to move. If only the contact area with the article is a problem, it may be advantageous to use a flat rubber core, but the braided ring 1 with rubber core of the present embodiment having an elliptical cross section close to a circle looks better, And it is easy to handle.

(Second Embodiment)
4 is an external perspective view of the braided ring 1a with rubber core according to the second embodiment, and FIG. 5 is a cross-sectional view of the braided braid 2a constituting the braided ring 1a with rubber core. It is a cross section along a line. The braided braid ring 1a according to this embodiment is different from the braided braid 2 according to the first embodiment only in the arrangement of six thin rubber cords 3 having a square cross section used for the braided braid 2a. The other configurations are the same.

  In the braided cord 2a with rubber core of this embodiment, six thin rubber cords 3 having a square cross section are arranged in a rectangle of 3 × 2 in the vertical and horizontal directions as shown in the cross-sectional view of FIG. 6A is a cross-sectional view of the joint portion 6, and FIG. 6B is a longitudinal cross-sectional view of the joint portion 6. The adhesive 7 penetrates into the narrow gap between the six thin rubber cords 3, the gap between the braid members constituting the outer braid 5, the gap between the rubber core 4 and the outer braid 5, and the gap between the cut surfaces at both ends. Solidify. The completed braided ring 1a with rubber core has a rounded vertical cross section due to the arrangement of the six thin rubber cords 3 constituting the rubber core 4 in the rubber cored braid 2a. It is joined so that it faces the center side of the ring.

  With such a configuration, the contact area between the rubber core 4 and the adhesive 7 in the braided ring with rubber core 1a of the present embodiment is significantly increased compared to the conventional braided ring with rubber core. Further, since the longer side of the braided cord 2 with rubber core is joined so that the longer side faces the center of the ring, when used as a hair binding tool or a product packaging fastener, it comes into contact with the hair or the article. The area is larger than the circular cross section. For this reason, there is an advantage that the mounting position is difficult to move during use.

(Third embodiment)
Both the rubber cored braid ring 1 of the first embodiment and the rubber cored braid ring 1a of the second embodiment employ a rubber string having a square cross section as the six thin rubber strings 3. For this reason, the rubber core 4 in a portion not solidified with the adhesive 7 shown in FIGS. 2 and 5 has an advantage that the arrangement thereof is not easily broken because the thin rubber cord 3 has a square cross section. However, when long braided braids 2, 2a are used for a large ring, the arrangement may be lost. As a countermeasure, the six thin rubber cords 3 are thin with a short width at predetermined intervals as shown in the longitudinal sectional view of FIG. 7 so that the mutual arrangement of the thin rubber cords 3 does not collapse before the outer braid 5 is covered. It is advisable to harden the rubber strings 3 with an adhesive 7.

  In the drawings, 1 and 1a are braid rings with rubber cores, 2 and 2a are braids with rubber cores, 3 are thin rubber cords, 4 are rubber cores, 5 are outer braids, 6 are joint portions, and 7 is an adhesive.

Claims (3)

A rubber core-containing braid ring made by cutting a rubber core-containing braid consisting of a rubber core and an outer braid covering it into a predetermined length and joining the cut surfaces at both ends into a ring shape,
The rubber core is formed by bundling six thin rubber strings having a square cross section, and four of the thin rubber strings are arranged to form 2 × 2 squares, and the remaining two are arranged in a square shape. The gap between the six thin rubber cords disposed outside the center of the two opposite sides and within a predetermined distance from the cut end surface, the gap between the outer surface of the rubber core and the outer braid, and the same range A rubber cored braid ring characterized in that an adhesive is infiltrated into the gap between the outer braid braid itself and solidified, and the cut surfaces at both ends are joined to each other in this state.   The braided ring with rubber core according to claim 1, wherein the six thin rubber cords having the square cross section are arranged in a rectangle of 3 × 2 in length and width instead of the arrangement. Braid ring.   3. A braided ring with a rubber core according to claim 1 or 2, wherein the rubber core composed of six thin rubber cords having a square cross section is an outer braid so that the arrangement of the thin rubber cords does not collapse during use. A braided ring with a rubber core characterized in that a gap between thin rubber cords with a short width is fixed with an adhesive before coating with an adhesive.