JP2000289512A - Vehicular strap having high stability - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a strap for a train, a bus and the like having high stability in the direction of travel. SOLUTION: This vehicular strap is made from a generally reversed triangular belt 11 wherein the width of an upper end attached to a pipe extending in a vehicle travelling direction is wide, and the width of a lower end to which a suspended ring 12 is attached is narrow. The reversed triangular belt 11 can take a V-shape and a Y-shape. If the suspended ring 12 is used as a gripping bar, flexibility in position gripped by a passenger is increased. Therefore, a stable strap is embodied without extensively changing a present structure of a vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanging strap attached to a public vehicle such as a train or a bus.

[0002]

2. Description of the Related Art In public vehicles such as trains and buses, facilities called hanging straps that can be grasped by passengers are provided in order to improve passenger safety and ride comfort against vehicle shake such as acceleration and deceleration. I have. This hanging leather 1 is, as shown in FIG.
Conventionally, it generally comprises a metal pipe P, a plastic suspension ring 3 and a synthetic leather belt 4 connecting the pipe P and the suspension ring 3 horizontally extending in the traveling direction D.
The standing passenger grasps the hanging strap 1 to obtain inevitable roll while traveling, and also obtains a reaction force against a so-called inertial force at the time of starting or stopping, thereby maintaining stability.

[0003] A standing passenger will support the body by grasping the suspension ring 3 of the suspension leather 1, but the pipe P is installed at a relatively high position so as not to disturb the inside of the vehicle. on the other hand,
The suspension ring 3 is installed at approximately the height of the passenger so that the passenger can easily put his / her hand on it. As a result, a relatively long belt 4 is used. The upper part of the hanging leather 1 is fixed to the pipe P, but the position where the hanging ring 3 is attached is not fixed. For this reason, the conventional hanging strap 1 is unstable, and the arm gripping the hanging strap 1 needs to apply force while tilting the hanging strap 1 in order to obtain a reaction force for stabilizing the body.

More specifically, when the vehicle accelerates / decelerates, the passenger applies acceleration force Ft = m × α (m: mass of a grasping person, α: acceleration of a train) from the floor to the foot. As shown in FIG. 7 (b), a part of the Fi is tilted by θ and the tension Fa is pulled by the force Fa with the gripping arm. The horizontal component Fh is obtained and is balanced with the acceleration force Fi. From FIG. 7B, it can be seen that the following relationship exists between the acceleration force Fi, the force Fa for pulling the hanging strap 1, and the angle θ. Fi = Fh = Fa · sin θ (1) Therefore, as θ is larger, the force of pulling the hanging leather with the arm, that is, the pulling force Fa, may be smaller. However, belt 4
If the belt 4 is inclined by θ, where L is the length of L, FIG.
As is clear from (a), the position of the suspension ring 3 moves by L × sin θ in the horizontal direction and by L × (1−cos θ) in the vertical direction. That is, in order to increase θ, the position of the suspension ring 3 swings greatly, so that the body is tilted, and the height of the suspension ring 3, that is, the arm needs to be increased. In other words,
The longer the belt 4 is, the more the passenger holding on to the suspension wheel 3 is caused to greatly swing the position of the suspension wheel 3 with respect to the shaking or acceleration force, and becomes unstable. Conversely, if the length L of the belt 4 is shortened, L × sin θ in the horizontal direction and L in the vertical direction
× (1-cos θ) becomes small and stable, but L
If the suspension ring 3 is raised to shorten the length of the pipe, it will not fit a short person, and if the position of the pipe P is lowered, there is a danger of hitting the head of a tall person, which does not solve the problem.

[0005] By the way, track maintenance technology for train lines and road surface management have recently been advanced, so that the shaking of trains and buses has been much improved. for that reason,
The need for hanging leather due to rolling of trains and buses has almost disappeared. On the other hand, the acceleration performance of vehicles such as trains and buses has also increased, and the acceleration at the time of acceleration / deceleration has increased with speeding up.
The need to resist this acceleration is increasing. In other words, it is considered that the hanging leather is changing to a situation where it is grasped in order to resist the acceleration force in the traveling direction, rather than swinging in the direction perpendicular to the traveling direction. In fact, among fully-commuted commuter vehicles, when accelerating or decelerating in a situation where they cannot step on their feet, it is often the case that a fully-occupied passenger is in a state like a shogi.

According to the inventor's memory, it has been a while before.
As shown in FIG. 8, a suspension rod 5 having a structure in which a rigid metal rod 2 is used in place of the belt 4 in a subway or bus, and is rotatable only in a direction a perpendicular to the traveling direction, and does not swing in the traveling direction D. I have seen it, but it disappeared only because it was temporarily hired. The first reason for disappearing was that instead of using a belt, a rigid metal rod was used, because an excessive moment was concentrated at the base 6 of the rod, and there was a problem in strength. In order for passengers to fully appreciate the goodness, it was thought that the vehicle was still rolled at that time, and thirdly, it was more costly than hanging leather.

[0007]

SUMMARY OF THE INVENTION The present invention provides a more effective and stable suspension leather which solves the drawbacks of the conventional suspension leather and copes with the changing needs of the suspension leather in the situation described above. The purpose is to do. Specifically, a stable reaction force is obtained with respect to the inertial force in the traveling direction,
The purpose is to provide hanging leather with safety, convenience, economy and stability.

[0008]

SUMMARY OF THE INVENTION In order to achieve the object, a hanging strap for a vehicle according to the present invention has a widened upper end attached to a pipe which is fixed in a vehicle running direction. An inverted triangular or inverted trapezoidal belt and a suspension ring attached to the lower end where the width of the belt is reduced. A Y-shaped or V-shaped belt having two fixed upper ends, and a lower end 1 of the belt fixed at two positions apart from each other on a pipe fixed in the vehicle traveling direction.
Even if it consists of a suspension ring attached to the place,
Similar effects can be obtained. If a grip bar is used instead of a plurality of suspension rings, it becomes a revolutionary suspension leather with more freedom in the position where the passenger can grab. There is no hanging strap in the position where the hand is raised naturally, and the hanging strap cannot be held in an unnatural posture. One belt fixed at a plurality of positions separated from each other on the ceiling of the vehicle, and a plurality of suspension rings or a single gripping rod fixed to the belt at a substantially central portion between the respective fixed positions. Then, it becomes a hanging leather that is easy to manufacture and install. If the belt is made of a rigid material, it will be a more stable vehicle suspension.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a basic example of a hanging leather 10 according to the present invention. The upper end of a belt 11 having an isosceles inverted triangle shape having a width A (for example, 15 cm) at an upper end (a base of an isosceles triangle) and a length B (for example, 30 cm) on two sides is attached to a pipe P installed along the traveling direction. After fixing, the suspension ring 12 is attached to the lower end of the belt 11. The passenger grabbed by the hanging leather 10
The horizontal component force Fh, which is a reaction force to the acceleration force Fi received when the vehicle starts, is calculated in principle from the equation (1) as Fi <Fax.
Within a range satisfying A / 2B, the belt 11 is obtained without bending (without swinging of the hanging ring 12 to the opposite side in the traveling direction), and the stability of the hanging ring 12 is maintained. Fi> Fa × A / 2B
Then, the belt 11 bends and the suspension ring 12 swings to the opposite side in the traveling direction. Therefore, the greater the ratio A / B, the higher the stability. The ratio A / B is designed in consideration of the acceleration force of the vehicle and the like. Normal equal width belt 2 on two sides of inverted triangle
FIG. 2 shows an example of the hanging leather 20 using No. 1. The upper ends of the two belts 21 and 21 having a length B are attached to the pipe P provided in the traveling direction at an interval A, and one suspension ring 12 is attached to the lower ends of the two belts 21 and 21. As in the case of FIG. 1, the belt 21 does not bend and the suspension ring 12 is stabilized as long as Fi <F × A / 2B is satisfied.

[0010] As shown in FIG.
The same effect can be obtained by attaching the suspension pipe to the attachment pipe P installed in the traveling direction at a position of the interval C and attaching one suspension ring at the center position of the interval 2 × D of the belt 22 for every × D. Also in this case, the belt 2 under the condition of Fi <Fa × C / 2D
2 does not bend, and the suspension ring 12 is stabilized. In any case, when a passenger standing while the vehicle is running is gripped by the hanging strap, the swinging in the direction perpendicular to the traveling direction becomes somewhat unstable as in the case of the conventional hanging strap. For the acceleration force in the traveling direction during acceleration / deceleration, the suspension ring 12
Is maintained stable, and the passenger can efficiently obtain the reaction force from the hanging strap. Belt 21 and belt 22 of the suspension ring 12
As shown in FIGS. 4A and 4B, a plane including the suspension ring 12 may be perpendicular to the traveling direction of the vehicle. In addition, the pipe P is omitted, and FIG.
The belt 21 may be directly attached to the ceiling S of the vehicle via the hook 14 as shown in FIG. FIG. 5B shows an example in which the angle θ is increased to increase the stability.

In the form of the hanging leather of the present invention, a gripping rod 13 may be attached instead of the hanging ring 12 as shown in FIG.
In FIG. 6A, a gripping rod 13 is horizontally mounted on the lower end of a plurality of isosceles inverted triangular belts 11 attached to a pipe P. In this example, the degree of freedom of the position in the traveling direction is higher as a position that the passenger grasps as compared with the hanging ring 12 illustrated above. That is, in the case of the suspension ring 12, the suspension leathers 10, 1
A passenger who stands between 0 is gripped by the left or right hanging strap 10 in an unnatural posture, but the gripping rod 13 can be gripped at any position. It is the same as the above-mentioned example using the suspension ring 12 that the normal equal-width belt 21 may be used for the two sides of the isosceles inverted triangle shape. An example in which the gripping bar 13 is employed is a combination of the pipe P and the belt 21 as shown in FIG.
Patterns such as (b), (c), and (d) are conceivable. Of course, the pattern described with reference to FIG. Further, if the belt has rigidity, a stable hanging leather can be obtained without having to satisfy Fi <Fax A / 2B.

[0012]

As described above, in the hanging leather according to the present invention, since the hanging ring or the gripping bar gripped by the passenger is stable without being shaken by the inertial force in the traveling direction, the passenger can efficiently perform the passenger. A reaction force against inertial force can be obtained. For this reason, the burden on passengers can be reduced with respect to recent high acceleration / deceleration of high-performance vehicles such as trains and buses. In particular, even in a packed state where it is not possible to step on the foot, it is possible to suppress the passengers from falling over shogi. At the same time, it keeps the same level of safety as the conventional hanging strap against rolling in the direction perpendicular to the traveling direction. Further, the mounting pipe, the suspension ring, etc. can be used as they are, and can be implemented only by renewing the shape and configuration of the belt, so that the economic efficiency can be secured at the same level as the conventional one.

[Brief description of the drawings]

FIG. 1 shows an example of a hanging leather using an inverted triangular belt according to the present invention.

FIG. 2 is a diagram showing an example of a hanging leather using a constant-width belt according to the present invention.

FIG. 3 is a diagram showing an example of a hanging leather using one belt and a plurality of hanging rings according to the present invention.

FIG. 4 is an overhead view (a) and a plan view (b) showing the direction of the suspension ring of the suspension leather according to the present invention.

FIG. 5 is a view showing two examples in which the hanging leather according to the present invention is directly hung on a ceiling.

FIG. 6 is a diagram showing several examples employing a hanging bar grip bar according to the present invention.

FIG. 7 is a diagram for explaining a force relationship when gripped by a conventional hanging leather.

FIG. 8 is a front view (a) and a side view (b) of a hanging leather employed for a time;

[Explanation of symbols]

1: Hanging leather 2: Metal rod 3: Hanging ring 4: Belt 5: Hanging rod 6: Root portion 10: Hanging leather 11: Belt 12: Hanging ring 1
3: gripping rod 14: hanging leather 20: hanging leather 21: belt 22: belt D: traveling direction Fh: horizontal component force P: pipe
A: Fixed point Fa: Pulling force Fi: Acceleration force

Claims (7)

[Claims] 1. An inverted triangular or inverted trapezoidal belt having a widened upper end attached to a pipe fixed in a vehicle running direction, and a belt attached to a narrowed lower end. Hanging leather for vehicles with high stability, comprising a hanging ring. 2. A Y-shaped or V-shaped belt having two fixed upper ends at a position apart from each other on a pipe fixed in a vehicle traveling direction and attached to a lower end of the belt. A highly stable hanging leather for a vehicle, comprising: a hanging ring. 3. A plurality of inverted triangular or inverted trapezoidal belts each having a widened upper end attached to a pipe fixed in a vehicle running direction and a pipe having a narrowed lower end. A highly stable vehicle suspension leather comprising a grip bar attached thereto. 4. A plurality of Y-shaped or V-shaped belts each having two upper ends fixed thereto, and a plurality of belts having a plurality of Y-shaped or V-shaped belts, which are fixed to each other at positions apart from each other on a pipe which is fixed by being passed in the vehicle traveling direction. A highly stable hanging leather for a vehicle, comprising a gripping bar attached at a position. 5. A belt fixed at a plurality of positions separated from each other on a pipe fixed to a pipe extending in a vehicle traveling direction, and a plurality of belts fixed to the belt at a substantially central portion between the fixed positions. A highly stable vehicle hanger comprising a hanger ring or a single gripping rod. 6. A belt fixed at a plurality of mutually separated positions on the ceiling of the vehicle, and a plurality of suspension rings or a single gripping rod fixed to the belt at a substantially central portion between the respective fixed positions. A highly stable vehicle suspension leather comprising: 7. The highly stable vehicle suspension according to claim 1, wherein the belt is made of a rigid material.