JP2001218613A - Strap with danger preventing function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the safety of a strap by enabling a ring of the strap string to be released by above a certain level of an unexpected external pulling force in the case where the pulling force is exerted on the strap. SOLUTION: A part of a strap string body (1) is separated in order to be provided with a pair of intermediate end parts, which are provided with intermediate connection parts (10) engaged and connected to the intermediate end parts. The engagement of the connection parts (10) is released to open the ring of the string body (1) when separating force above a certain level is exerted externally thereon. The connection parts (10) are constituted of a pair of string end parts connecting components (11, 12) and a cylindrical intermediate connection component (13). The connecting components (11, 12) are fitted at an insertion portion with a stepped jaw part whose root side is smaller than its tip side, and a projection for being engaged with the jaw part to prevent disconnection is mounted on an internal surface of the connection components (13). Additionally, a strap string engaging hole (3a) is mounted on a part of a string body connection part (3) to be able to make the string body (1) pass through the hole (3a) in a slidable manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strap for carrying a suspended body such as a portable telephone or a camera around a wrist or the like, and more particularly to a strap with a danger prevention function for enhancing safety during carrying.

[0002]

2. Description of the Related Art A conventional strap is used for lowering a suspended body as described above from a wrist or a neck or a shoulder. The strength of each part and the coupling between the parts is determined by suspending the suspended body. It was designed only to be able to withstand a certain amount of pulling force when lowered.

[0003]

However, in recent years, the chance of using a strap attached to a suspended body such as a mobile phone or a camera has increased, and as a result, the strap has been caught by other structural parts during walking. When the train is about to fall, the suspended body is caught in the automatic door when the train departs, or the vehicle is snatched, there is a tendency that the suspended body does not separate from the body and the chance of injury is increased. Can be Therefore, even in the case where such a situation occurs, it is demanded to implement quick safety measures so as not to injure the body such as the wrist and the neck.

On the other hand, conventional straps of this type are designed to withstand a certain or more pulling force only by keeping the suspended body from leaving the body. Although there is a tendency that some of the proof stresses are slightly weakened to cope with the above-mentioned accidents, none of them has positively increased safety in response to the expected tension.

[0005] An object of the present invention is to solve such a problem, and to prevent an accident while carrying a suspended body using a strap, the external force is not less than a predetermined value according to an external force that is unexpectedly pulled. An object of the present invention is to provide an extremely safe strap with a danger prevention function by releasing the ring of the strap string in some cases.

[0006]

In order to solve the above-mentioned problems, a strap with a danger prevention function according to the present invention comprises a strap string (1 or 21) forming a ring to be hung on a part of a body, and a strap to be suspended. A thin string-shaped suspension string (2 or 22) to be attached to the lower body (4), the strap string (1 or 21) and the suspension string (2 or 2);
2), a part of the strap cord body (1 or 21) is cut off to form a pair of intermediate ends (1).
a, 1b, or 21a, 21b), and an intermediate connecting portion (10, 30) for engaging and connecting the pair of intermediate ends (1a and 1b, or 21a and 21b). When the above separating force is applied,
The intermediate connecting portion (10 or 30) is disengaged and the ring of the strap cord (1 or 21) is opened.

More specifically, the intermediate connecting part (10 or 30) is composed of a pair of string end connecting parts (11 and 12, or 31 and 32) and a cylindrical intermediate connecting part (13 or 33). And the cord end connection parts (11 and 1)
2, or 31 and 32) are string end fixing portions (11d, 12d, etc.) respectively fixed to the intermediate ends (1a, 1b, or 21a, 21b), and the intermediate connecting parts (13, 32). Or 33) left and right openings (13
a, 13b, etc.)
a, 11b, or 12a, 12b, etc.), and the insertion portion (11a, 11b, or 12a, 12b, etc.) has a cross section perpendicular to the insertion direction at the base side (11b, 12b) from the tip side (11a, 12a). Or 12b) is a smaller step-like jaw (11c or 12b).
c), and the intermediate connection part (13 or 3) is provided.
When the insertion portion (11a, 11b, 12a, 12b, or the like) is inserted into the cylindrical inner surface of 3) from the left or right opening (13a, 13b, or the like), the jaw (11c, 12c, or the like) is inserted. ) To prevent the insertion portion from dropping off (13c, 13c, 13c, 13c).
Etc.) may be provided.

[0008] In addition, the string connecting portion (3) partially fixes the hanging string (2), and has a strap string engaging hole (3a) provided in the other part. The strap string body (1) may be slidably penetrated through the hole (3a), so that the strap body coupling portion (3) and the strap string body (1) are engaged.

[0009]

Next, an embodiment of the present invention will be described.
This will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing one embodiment of the present invention (when a round strap-shaped strap is used). FIG. 2 is a perspective view showing another embodiment (in the case of using a square string-shaped strap string).

As shown in FIG. 1, a strap with a danger prevention function according to the present invention includes a strap-shaped strap 1 forming a ring to be hung on a part of the body such as a wrist, and a strap such as a mobile phone or a camera. A thin string-shaped hanging string body 2 which can be engaged with a hole provided in a part of the body 4, and a string body connecting portion for connecting both ends of the strap string body 1 and the hanging string body 2 3 and an intermediate connecting portion 10 into which the intermediate portion of the strap 1 is cut and inserted. Similarly, the strap with a danger prevention function of FIG. 2 includes a strap string body 21, a hanging string body 22, a string body coupling portion 23, and an intermediate connection portion 30.

The difference between the embodiment shown in FIG. 1 and the embodiment shown in FIG. 2 is that the strap string body 1 has a round string shape, whereas the strap string body 21 has a rectangular string shape with a rectangular cross section. Corresponding to the above, the intermediate connection portion 10 is cylindrical, whereas the intermediate connection portion 30 is rectangular. It should be noted that the string connecting portion 23
Are fixed to respective ends of the strap string body 21 and the hanging string body 22, but the string connecting section 3 is fixed only to the hanging string body 2, and the strap string body 1 is connected to the string connecting section. 3 holes 3
a, and the strap 3 is slidably engaged by penetrating the strap 1 through the hole 3a.

FIG. 3 is an exploded perspective view showing the intermediate connecting portion of the embodiment of FIG. 1 in an exploded manner. FIG. 4 is an exploded perspective view showing the intermediate connecting portion of the embodiment of FIG. 2 in an exploded manner. FIG. 5 is a cross-sectional view of the intermediate connecting portion of FIG. 3 cut in a plane including a center line in a state similar to FIG. FIG. 6 shows the intermediate connection of FIG.
It is the right view seen from the position of -B. A in the figure is A-
A is seen from A, and b is seen from BB.

As shown in FIG. 3, the intermediate connecting part 10 is composed of string end connecting parts 11, 12 and an intermediate connecting part 13. The pair of string end connection parts 11 and 12 have the same shape and are fixed to the string ends 1a and 1b, respectively, which are cut off in the middle of the round string strap body 1. The string end connecting part 11 (12) has a part inserted into the intermediate connecting part 13 and a part not inserted, and the inserted part has a root side 11b from the tip side 11a (12a).
The stepped jaw 11c (1
1c) is provided. String end fixing part 1 of part not inserted
A string end 1a (1b) is inserted and fixed to 1d (12d).

The intermediate connecting part 13 has left and right openings 13.
a or 13b, a projection (hereinafter, referred to as an internal projection) 13 for engaging with the jaws 11c, 12c of the cord end connection component to prevent the insertion portion from falling off when the insertion portion is inserted.
c, 13c, 13c, 13c are provided on the cylindrical inner surface. In the present embodiment, the internal protrusions 13c are formed by making cuts in a part of the cylindrical side surface 13d and protruding inward.

As shown in FIG. 4, the intermediate connecting part 30 is composed of string end connecting parts 31 and 32 and an intermediate connecting part 33. The string end connecting parts 31 and 32 are cut off in the middle of the square cord-shaped strap cord body 21.
a, 21b. The pair of string end connection parts 31 and 32 have the same shape.

The part of the string end connecting part 31 (32) inserted into the intermediate connecting part 33 has a tip end side 31a (32).
A step-like jaw 31c (32c) is provided in which the cross section of the base side 31b (32b) is smaller than a). The string end fixing portion 31d (32d) of the portion that is not inserted fixes the string end 21a (21b) separated in the middle of the strap cord body 21. When the insertion portion is inserted from the left and right openings 33a or 33b (not shown), the intermediate connection component 33 has internal protrusions 33c, 3c that engage with the jaws 31c, 32c.
3c (only a part is shown) is provided on the inner surface of the cylinder.

The connection and release of the components constituting the intermediate connectors 10 and 30 are almost the same as those of the embodiment of FIG. 1 and the embodiment of FIG. An example will be described. Each of the components is made of a material such as elastic plastic. Therefore, some resilient deformation is possible.

FIG. 7 is a cross-sectional view showing a connection state of the intermediate connection portion of the embodiment of FIG. 1 under the same conditions as in FIG. The state of FIG. 7 is different from the state of FIG.
The insertion portions of the string end connection parts 11 and 12 to which the ends 1a and 1b separated in the middle of the middle part are fixed are inserted from the left and right openings 13a and 13b of the intermediate connection part 13, and the jaws 11c and 1b are inserted.
2c, internal projections 13c, 13c provided on the cylindrical inner surface.
.. Are engaged.

When inserting, against the elasticity of the material,
Each part of the intermediate connection part is slightly deformed, but the tip parts 11a and 12a of the string end connection part are inclined so that the tip ends become thinner. Insertion is relatively easy. Once inserted, the jaws 11c, 12c are caught by the internal projections 13c, 13c.

Between the ends 1a and 1b of the strap 1
When a detaching force is applied from the outside, if the force is equal to or more than a certain value, each part can be slightly deformed by the elasticity of the material, so that the jaws 11c, 12c and the internal protrusions 13c, 1c,
.. Are disengaged and separated as shown in FIG. Then, the ring of the strap 1 shown in FIG. 1 is released. Note that the above-mentioned force of a certain level or more is usually considered to be about 9 kg or more.
It is designed so that the string end connection part and the intermediate connection part are separated by kg.

The same applies to the embodiment of FIG. It is relatively easy to insert the string end connection parts 31, 32 into the intermediate connection part 33, and once inserted, the jaws 31c,
32c is caught by the internal projections 33c, 33c,... And cannot be easily removed. End 21 of strap cord body 21
When a separating force is applied from outside to between the a and 21b, if the force is equal to or more than a certain value, the jaws 31c and 32c
Are separated from the inner projections 33c, 33c,... And are separated as shown in FIG. Therefore, the strap cord 2 shown in FIG.
One ring is open.

In the embodiment of FIG. 1, the strap 1 is slidably engaged with the string connecting portion 3, so that the intermediate connecting portion can be easily connected at any position. It can be carried out. Thereafter, by turning the strap string body 1 to change the relative positional relationship with the string body joint portion 3, the position of the intermediate connecting portion 10 at the time of attachment can be brought to the most preferable place. In addition, with respect to an instantaneous external force, the sliding force from the position immediately before the strap 1 disperses the pulling force, which helps to protect the safety of the body and the suspended body until it is completely released.

Although the embodiment of the present invention has been described in detail, various modifications other than the embodiment shown in FIGS. 1 to 7 are conceivable. For example, depending on the materials and shapes of the strap straps, there are many possible deformations of the parts of the strap joint, such as those having an elliptical cross section, a square, and a rhombus other than those shown in the figures. In addition, many modifications are conceivable for the structure and shape of the insertion portion of the string end connection component and the structure and shape of the internal protrusion of the intermediate connection component. In particular, the outer shapes of the intermediate connecting portion and the cord connecting portion can be variously deformed to make the sense of play more enjoyable. Even if the structure and shape of each part are changed as described above, any of them is included in the present invention as long as it conforms to the gist of the present invention.

[0024]

As described in detail above, the strap with the danger prevention function of the present invention has a pair of intermediate ends provided by cutting off a part of the strap, and the intermediate ends are engaged by the intermediate connecting portion. When a certain or more detaching force is applied from the outside, the engagement is released to open the ring of the strap cord body, and in response to the suddenly generated external force, the strap is being used. This has the effect that unexpected accidents can be reliably prevented.

Further, the intermediate connecting part is constituted by a pair of string end connecting parts and a tubular intermediate connecting part, and the insertion part of the string end connecting parts has a staircase whose root side is smaller than the tip side. By providing a projection on the inner surface of the intermediate connecting part, when the insertion part is inserted from the left or right opening, to engage with the jaw to prevent the insertion part from falling off. ,
The above effects can be specifically achieved.

In the case where the cross section of the strap is a circle or an ellipse, the strap connecting part is provided with a strap engaging hole, and the strap is slidably penetrated into the hole to engage. As a result, there is an effect that the attachment of the strap to the body is convenient and the position of the intermediate connection component can be freely changed to a desired place after the attachment.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention (a strap string is a round string).

FIG. 2 is a perspective view showing another embodiment of the present invention (a strap string is a square string).

FIG. 3 is an exploded perspective view showing the intermediate connecting portion of the embodiment of FIG. 1 in an exploded manner.

FIG. 4 is an exploded perspective view showing an intermediate connection portion of the embodiment of FIG. 2 in an exploded manner;

FIG. 5 is a cross-sectional view of the intermediate connecting portion of FIG. 3 cut along a plane including a center line.

FIG. 6 is a right side view showing the intermediate connecting portion of FIG. 3 as viewed from positions AA and BB in the drawing.

FIG. 7 is a cross-sectional view of the connection state of the intermediate connection portion in FIG. 3 cut along a plane including a center line.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 21 Strap string body 2, 22 Hanging string body 3, 23 String body joining part 4 Suspended body 10, 30 Intermediate connecting part 11, 12, 31, 32 String end connecting part 11c 12c 31c 32c Jaw part 13, 33 Intermediate connection parts 13c, 33c Internal projection

Claims (3)

[Claims] 1. A strap string which forms a ring to be hung on a part of a body, a thin string string to be attached to a suspended body, and the strap string and the string string are coupled to each other. In the strap having the string connecting portion, a part of the strap string is separated to provide a pair of intermediate ends,
Providing an intermediate connecting portion that engages and connects the pair of the intermediate ends, and when a certain or more separating force is applied from the outside,
The strap with a danger prevention function, wherein the engagement of the intermediate connecting portion is released to open the ring of the strap cord body. 2. The intermediate connecting part comprises a pair of string end connecting parts and a tubular intermediate connecting part, wherein the string end connecting parts are respectively fixed to the respective intermediate ends. An end fixing portion and an insertion portion to be inserted into one of the left and right openings of the intermediate connecting component, wherein the insertion portion has a step-like cross section perpendicular to the insertion direction at the root side smaller than at the tip side. Are provided, and projections are provided on the cylindrical inner surface of the intermediate connecting part to engage with the jaws when the insertion portion is inserted from the left and right openings to prevent the insertion portion from falling off. The strap with a danger prevention function according to claim 1, wherein: 3. The strap connecting portion fixes the hanging string body in a part, and provides a strap string engaging hole in another part, and allows the strap string body to slide freely in the strap string engaging hole. The danger prevention function strap according to claim 1, wherein the strap body is engaged with the strap string body by penetrating the strap.