JP2002058515A - Shoulder bag with device for preventing slipping off - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for preventing a shoulder bag from slipping off a user's shoulder when walking. SOLUTION: An armpit holder 6 is attached to a shoulder strap 3. When a user carries a shoulder bag on the shoulder, the armpit holder 6 is held under the armpit so that the shoulder strap of the shoulder bag is pressed toward the center of the user's body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag to which a strap is attached to one shoulder so that a person can easily carry the bag when carrying the bag.

[0002]

2. Description of the Related Art Conventionally, a shoulder-hanging type bag has a shoulder strap attached to a portion of the bag corresponding to the shoulder of the strap, so that the shoulder strap does not easily fall off the strap. Processing is performed so that the non-slip surface is brought into contact with the shoulder to prevent the bag from slipping off the shoulder due to frictional force with the clothing on the shoulder.

[0003]

The above prior art has the following disadvantages. B) There are various types of clothing fabrics worn by humans, and as a result, it has not been possible to exert a sufficient anti-slip effect in any case. (B) The anti-slip effect has the disadvantage that the wearer's clothes are also shifted to the arm side together with the shoulder rest, and the opposite side of the outer jacket is pulled tight, especially when layering in winter etc. This phenomenon was remarkable. C. Anti-slip properties also deteriorated over time. Even if the anti-slip effect was able to be exerted for a new period, the effect declined as it became older. The present invention has been made to solve these drawbacks.

[0004]

SUMMARY OF THE INVENTION Independent of the frictional force between a hanging string of a bag and a person's clothes, the direction of the force acting on the shoulder through the hanging string by the bag is changed, and the force at the shoulder in the direction of sliding down from the shoulder. In order to minimize the components, a U-shape was used to connect the two points at the center of the hanging strap to the shoulder of the strap and the base of the hanging strap, and to push the hanging strap closer to the center of the body. A side holder is provided integrally with the hanging string.

[0005]

Embodiments of the present invention will be described below. FIG. 1 is a perspective view of a conventional shoulder bag 1, and FIG. 2 is a perspective view showing a use state where the shoulder bag 1 is hung on a shoulder of a person. FIG. 3 shows a perspective view of the side holder 6 according to the present invention, and FIG. 4 shows a perspective view of a state where the side holder 6 is assembled to the shoulder bag 1.
FIG. 5 is a perspective view showing a usage state in which the shoulder bag 1 with the armpit holder 6 assembled is hung on a person's shoulder, and the U-shaped bottom 9 of the armpit holder 6 is sandwiched below the armpit.

The armpit holder 6 according to the present invention has a U-shape and has a suspending string assembling portion 7 at both ends thereof, and a suspending portion provided at the center of the suspending string assembling portion 7 in a direction perpendicular to the direction of the U-shape. It is assembled to the suspension string 3 through the string insertion hole 8. As shown in FIG. 4, the U-shaped bottom 9 of the side holder 6 is assembled so as to face sideways when the side holder 6 is assembled into the shoulder bag 1.

In this embodiment, an example is shown in which the hanging string insertion hole 8 is provided in the hanging string assembling portion 7 of the side holder 6 and the hanging string is attached to the hanging string of the shoulder bag. One end of the insertion hole may be made openable so that the insertion hole can be removed instead of the insertion hole, and a hook or the like may be attached to the opening to make it openable so that the insertion hole can be detachably formed. The main material of the armpit holder 6 is made of hard or semi-rigid plastic or leather, and has sufficient strength so that the basic shape does not change even when subjected to the mass of the bag or some external force accompanying other handling. Shall be used. The present invention has the above configuration. When using the present invention, as shown in FIG. 5, an arm is inserted between the shoulder pad 4 of the shoulder bag and the side holder 6, and the shoulder bag is suspended so that the shoulder pad 4 hits the shoulder. U-shaped bottom portion 9 of side holder 6 so as to push suspension string assembling portion 7 into the center of the body.
Is pinched under the armpit by lowering the arm naturally.

[0008]

FIG. 6 is a diagram for analyzing the easiness of sliding of a hanging string from a shoulder by vector-decomposing the force acting on each part by the mass W of the shoulder bag 1 in the conventional embodiment, and FIG. FIG. 8 is a diagram for analyzing the easiness of sliding of the hanging string from the shoulder by vector-decomposing the force acting on each part by the mass W of the shoulder bag 1 in the embodiment of the present invention.
It is the elements on larger scale of the shoulder in FIG.

The preconditions in the above two embodiments are that the shoulder bag body has a mass of 3 kg, the shoulder bag has a thickness of 12 cm, and the hanging string is the shoulder bag body 2.
It is attached to the center of the upper side. The width of the hanging string is 4c
m, the position where the hanging string hangs on the shoulder is a position where the end face of the hanging string is in contact with the boundary on the body side from the vertical boundary between the arm and the body side,
The vertical distance from the position on the shoulder to the upper surface of the shoulder bag shall be 40 cm. The position where the hanging string assembling portion 7 of the armpit holder according to the present invention acts is vertically 20 cm above the shoulder bag upper surface, and horizontally 6 cm from the body side toward the center of the body. In order to facilitate the analysis, it is assumed that the generation of vector components in the thickness direction of the body is ignored, the inclination of the shoulder is uniform and 15 °, and the force acting on the shoulder bag or the hanging string acts on the center line. Hereinafter, how the mass of the shoulder bag acts on the shoulder will be described in each of the related art and the present invention.

First, in the conventional method, as shown in FIG. 6, the mass W of the shoulder bag is a vector component F1, which is a force acting along the longitudinal direction of the hanging string, and a force acting in a direction perpendicular to the body. The vector component F1 is further decomposed into a vector component T1, and the vector component F1 acts on the shoulder as it is through the hanging string, and a vector component B1 acting in a direction perpendicular to the shoulder and a force acting along the shoulder And a vector component A1. Formula 1 and the calculation result of the vector components of F1 and A1 are shown in Equation 1.

Next, in the case of the present invention, as shown in FIG. 7 and FIG. 8 which is an enlarged view of a part thereof, the mass W of the shoulder bag is determined by a vector component F2 which is a force acting in the longitudinal direction of the suspension string. And a vector component T2 which is a force acting in a direction perpendicular to the body, and the vector component F2 acts on the hanging string assembling portion 7 of the armpit holder 6 through the hanging string, and in a direction perpendicular to the body. It is decomposed into a vector component T3 which is an acting force and a vector component F3 which is a force acting in the longitudinal direction of the hanging string extending from the shoulder to the hanging string assembling portion 7 of the side holder.

Further, the vector component F3 is
It is decomposed into a vector component B2 which is a force acting on the shoulder through the hanging string and acts in a direction perpendicular to the shoulder, and a vector component A2 which is a force acting on the shoulder. Formula 1 and the calculation result of the vector components of F2, F3, and A2 are shown in Equation 1. According to these calculation results, in the conventional method, the vector component A1 acting along the shoulder that leads to the hanging strap sliding down from the shoulder is 15N, whereas the vector component A1 according to the present invention is applied to the shoulder that leads to the hanging strap sliding down from the shoulder. The vector component A2 acting alongside is 2.2N, which indicates that there is a great difference. As is apparent from the above calculation results, the present invention has a great effect on preventing the shoulder bag from slipping off the shoulder.

[0013]

(Equation 1)

[0014]

By implementing the present invention, not only can the shoulder bag not slip off from the shoulder during walking, but also can walk comfortably, and the shaking of the shoulder bag body 2 caused by walking can be reduced. can do.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional shoulder bag.

FIG. 2 is a perspective view showing a use state of a conventional method.

FIG. 3 is a perspective view of an armpit holder according to the present invention.

FIG. 4 is a perspective view of a shoulder bag according to the present invention.

FIG. 5 is a perspective view showing a use state of the present invention.

FIG. 6 is an analysis diagram of a stress component of a conventional method.

FIG. 7 is an analysis diagram of a stress component of the present invention.

FIG. 8 is a partial enlarged analysis diagram of the stress component of the present invention.

[Description of Signs] 1 Shoulder bag 2 Shoulder bag main body 3 Hanging string 4 Shoulder pad 5 Shoulder 6 Side holder 7 Hanging string assembling section 8 Hanging string insertion hole 9 U-shaped bottom

Claims (1)

[Claims] In a hanging strap of a shoulder-hanging type bag, a rigid or semi-rigid U-shaped member connects a portion corresponding to the shoulder of the hanging strap and two central portions before and after the bag attachment base. , With both ends of the U-shape facing the body,
With the bottom of the middle of the character facing the direction of the arm, sandwiching it beneath the arm between the body and the arm, and pushing the hanging string toward the center of the body, a shoulder hanging type bag with anti-slip device