JPH08336606A - Energy absorption unit - Google Patents

Abstract

PURPOSE: To prevent injury from inflicting on the human body by providing an energy absorption unit with high safety and a high-performance shock energy absorption ability, reducing its size and weight, and uniformalizing the shock acting on the human body in absorbing the shock energy. CONSTITUTION: This is an energy absorption unit 30 which is constituted of the first belt part 22 with the first width (d), and the second belt part 23 with the second width (D) which is larger than the first width (d) of the first belt body 22. The energy absorption unit 30 is so formed that the first belt part 22 plus the second belt part 23, and the first part 28 in a separated state plus the second part 27 which is in such a state that the second belt part 23 substantially encircles the first belt part 22 so as to be integrally fixed with each other are arranged in the adjacent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energy absorbing unit, and more particularly to a safety belt used for preventing a fall in high-altitude work,
It also relates to a special belt safety unit for absorbing impact energy used in various safety belts for automobiles, parachutes and other vehicles.

[0002]

2. Description of the Related Art Conventionally, as a shock energy absorbing unit 1 of this type, as shown in FIG. 5, two belts 2 and 3 each having a width of about 50 mm or less are superposed on each other, and a large number of the superposed portions are formed. There is known a structure in which a sewing thread 4 is sewn to form an integral part 5 and a separating part 6.

Impact energy absorbing unit 1 having such a structure
In this case, one end of the belt portion 3 of the separating portion 6 is attached to the safety belt 11 on the human body side, and the end portion of the other belt portion 7 of the separating portion 6 is commonly called a D ring. The rope and the hook 9 are connected to each other via a connecting ring 8 which is present, and even when the work is carried out at a high place and is accidentally crashed, a strong impact force is exerted between the two belts of the separating portion 6 so that the integral portion 5 is sewn. The sewing thread is torn and broken, and the breaking force of this sewing thread absorbs impact energy. In such a conventional method, in order to form the integral part 5, the quality of the energy absorbing unit varies greatly depending on the sewing machine, sewing thread, belt, as well as the skill level of the sewing manufacturer, the sewing pattern, and the like. However, the impact energy absorption effect is changed, which is a problem and cannot be said to be a preferable method.

Further, in the above-mentioned conventional structure, there is a problem that a sewing process is required, which is inefficient and leads to an increase in production cost. On the other hand, as a method for solving the problem relating to the conventional energy absorbing unit, for example, an improved method as disclosed in Japanese Patent Publication No. 63-15863 is proposed.

That is, as shown in FIG.
According to Japanese Patent Laid-Open No. 15863, the two belts 12 and 13 are not connected to each other by stitching with a sewing thread, unlike the above-mentioned conventional example.
Are joined together to form the integral part 5, and then the two belts 12 are joined together.
And 13 form the separating portion 6 formed independently of each other, and the binding yarn 14 is divided to divide the two belts 1.
It is divided into 2 and 13 respectively and arranged,
As shown in FIG. 5, one end of the belt 13 of the separating portion 6 is connected to a rope via a connecting ring 8 called a D ring,
As shown in FIG. 5, the belt 9 is connected to the hook 9, and the other end of the belt 12 is attached to the safety belt 11 on the human body side. It is configured to do.

In this method, the two belts described above are not joined to each other by sewing threads, but the purpose is achieved in the weaving process, which is clearly the case in the conventional example as shown in FIG. Compared to this, technological advances can be seen.

In the concrete example shown in FIG. 6 (A),
When the impact energy absorption unit is woven,
Integral parts 5 and separating parts 6 are formed alternately and continuously,
When commercializing by cutting the continuous strip state appropriately,
As shown in FIG. 6 (B) -1, at one end thereof,
The integral part 5 may be formed and the separating part 6 may be formed at the other end, and FIG.
As shown in FIG. 3, the separating portions 6 may be formed at both ends thereof, and the integral portion 5 may be formed at the intermediate portion.

Further, in the above conventional example, FIG.
As shown in (B) -3, the integrated portion 5 may be formed at both ends thereof, and the separation portion 6 may be formed at the intermediate portion. However, the Shokoku Sho 63
The energy absorbing unit disclosed in Japanese Patent Laid-Open No. 15863 also has technical drawbacks as described below. That is, in a safety belt in which the impact energy absorbing unit is used, as a typical example, one belt of the separating portion is attached to the safety belt on the human body side, and the other belt is D.
It is usually attached to a small metal ring such as a ring, and a rope or hook is usually attached to the tip of the ring.

At this time, in order to attach a flat belt (usually, its width is 50 mm) to a small ring such as a D ring, it is a general method to fold and sew through the ring belt and fix the belt to the ring. This installation work is difficult, and the workability such as bending and sewing parts of the belt in the width direction is often poor, and it is necessary to install the belt on a complicated ring, which only hinders productivity. However, it also causes quality variations as a safety belt, and there has been a strong demand for improvement of such problems.

Further, a major drawback of the prior art other than the above is that the impact energy absorbing unit must have a large shape because each of the body portions that absorb impact energy is composed of two flat belts. Not get, so
Since workability is often hindered when working in high places, the energy absorbing unit must be as light and compact as possible, and there has been a strong demand for it. In addition, as for such energy absorbing unit, there is a demand for unlimited improvement in performance of impact energy absorption, which is the most important point. This means that even if an aerial worker unfortunately encounters a crashed self, There is an increasing demand for a high-performance impact energy absorption unit that does not damage the human body and can restart work in a short time.

The energy absorbing unit based on the prior art cannot completely solve the above-mentioned drawbacks, and the energy absorbing unit has the performance capable of completely satisfying the above-mentioned requirements. Could not be supplied.

[0012]

DISCLOSURE OF THE INVENTION The object of the present invention is to improve the above-mentioned drawbacks of the prior art, to have a high safety and a high-performance impact energy absorption capacity, and it is possible to reduce the size and weight. Further, the present invention provides an energy absorbing unit capable of uniforming the impact on the human body at the time of absorbing the impact energy and preventing the human body from being damaged.

[0013]

The present invention employs the following technical configuration to achieve the above object. That is, the basic configuration of the energy absorbing unit according to the present invention is that
The strip-shaped body portion and the first strip-shaped body portion are configured as separate bodies,
An energy absorbing unit configured with a second strip-shaped body portion having a second width larger than a first width of the first strip-shaped body portion, the energy absorbing unit being the first strip-shaped body portion. The body portion and the second strip-shaped body portion are separated from each other, and the first portion and the second strip-shaped body portion substantially surround the first strip-shaped body portion. An energy absorbing unit in which a second portion in a state of being integrally fixed is arranged adjacent to each other, and as another aspect of the above energy absorbing unit, the second band-shaped body has The second width is an energy absorption unit set to be approximately twice the first width of the first strip-shaped body portion.

[0014]

The energy absorbing unit according to the present invention has the technical structure as described above, and therefore, in particular, the separation portion, that is, the one belt portion in the first portion pointed out in the present invention, that is, The first strip-shaped portion is formed with a thin strip-shaped member having a width approximately half that of the second strip-shaped portion so that it can be easily inserted into an annular metal member (D ring) connected to a rope, a hook, or the like. As a result, not only is the size and weight reduced, but the work of inserting it into the annular metal member (D ring) is simple and easy, and the work efficiency is greatly improved.

On the other hand, the other belt portion, that is, the second belt-shaped body portion, which is connected to the safety belt for the human body, is spread and used in a plane shape to be used, which is substantially the same as the conventional impact energy absorbing belt. Since the belt-like body having the width of is formed, it is possible to exert the same function and effect as the conventional impact energy absorbing belt in terms of performance. Further, one of the salient features of the energy absorbing unit according to the present invention is that the first
When a breaking force is applied between the belt-shaped body portion and the second belt-shaped body portion, the binding yarns between the two belts in the conventional impact energy absorbing belt are simultaneously line-by-line and planar. In the meantime, since the human body undergoes an intermittent impact change due to the sequential rupture, the first strip-shaped body portion and the second strip-shaped body portion exert a rupture force in an oblique direction with respect to each other. As a result, the knotting yarns forming the integrated portion which is the second portion are three-dimensional (3
Since the fracture energy is uniformly and randomly broken, the fracture energy can be absorbed uniformly, and the impact energy can be stably absorbed by the fracture without causing the intermittent impact change applied to the human body.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific examples of the energy absorbing unit according to the present invention will be described in detail below with reference to the drawings. FIG.
FIG. 1 is a perspective view showing a configuration of one specific example of an energy absorbing unit according to the present invention, in which a first strip-shaped body portion 22 having a first width d and the first strip-shaped body portion 22 are shown. Is an energy absorption unit 30 that is configured as a separate body and that is configured with a second strip-shaped body portion 23 having a second width D that is larger than the first width d that the first strip-shaped body portion 22 has. In the energy absorption unit 30, the first strip-shaped body portion 22 and the second strip-shaped body portion 23 are separated from each other by the first portion 28 and the second strip-shaped body portion 23. An energy absorbing unit 30 in which a first portion 22 is substantially surrounded and a second portion 27 in which both are integrally fixed is disposed adjacent to each other, and As another mode of the energy absorption unit 30 of FIG. Second width D is the energy-absorbing unit 30 is set to be substantially twice the first width d with the aforementioned first strip portion 22.

Further, in the energy absorbing unit 30 according to the present invention, the first strip-shaped body portion 22 constituting the core portion.
Is configured so as to be substantially completely enclosed by the second strip-shaped body portion 23, and further, the first strip-shaped body portion 22 and the second strip-shaped body portion 23 are The weft yarn 24 of the first strip-shaped body portion 22 and the weft yarn 25 of the second strip-shaped body portion 23 are in a second portion where they are joined to each other by a plurality of binding yarns 26, that is, in a state of being integrally fixed. Second part 2
7 and all of the binding yarns are woven as warp yarns into either the first strip-shaped body portion 22 or the second strip-shaped body portion 23, and the first strip-shaped body portion 22 and the second strip-shaped body A separating portion 28 is provided so that it can be used separately from the portion 23.

That is, in the energy absorbing unit 30 according to the present invention, the first portion 28 and the second portion 2 which are composed of the first strip-shaped body portion 22 and the second strip-shaped body portion 23, respectively.
No. 7 is continuously and integrally constituted by a woven structure or a knitted structure using continuous warp yarns 31 and binding yarns 26, and the specific weaving method will be described in detail below. . Here, in the energy absorbing unit 30 according to the present invention, the binding yarn used in the second portion is the first strip-shaped body portion or the first strap portion in the first portion. It is folded into either one of the two strip-shaped body portions. In the energy absorbing unit 30 according to the present invention, the first portion 28 and the second portion 27 having the above-described configurations are formed so as to be alternately formed substantially in the longitudinal direction of the energy absorbing unit. Or woven in a strip in the direction,
By knitting and appropriately cutting such a product, it is possible to easily obtain the energy absorbing unit 30 having the same configuration as the configuration shown in FIGS.

That is, as shown in FIGS. 3 (A) to 3 (C), the first portion 28 and the second portion described above are also used in the present invention.
The narrow band-shaped body in which the parts 27 are alternately and continuously formed in the longitudinal direction is appropriately cut to manufacture the energy absorbing unit 30 having a predetermined length, as shown in FIG. 3 (A). In addition, the first portion 28 may be formed at one end thereof and the second portion 27 may be formed at the other end thereof, and FIG. As shown in, the first portion 28 is formed at both ends thereof,
The second portion 27 may be formed in the intermediate portion.

Further, in the above conventional example, FIG.
As shown in (C), the second portion 27 may be formed at both ends thereof, and the first portion 28 may be formed at the middle portion thereof.

The first strip-shaped body portion 22 and the second strip-shaped body portion 23 in the energy absorbing unit 30 according to the present invention.
Width, length, or the width, length, etc. of the integrated portion 27 and the separating portion 28 are determined by the purpose of use, required tensile strength, woven / knitted structure, warp yarn, weft yarn, binding yarn, etc. It can be appropriately and selectively determined based on the material. That is, the energy absorbing unit 30 according to the present invention is appropriately adjusted by changing the fineness of the warp yarn, the weft yarn, the binding yarn, etc., the number of yarns used, the yarn usage, the woven or knitted structure, etc. according to the purpose of use. Things are possible.

Furthermore, in the energy absorption unit 30 according to the present invention, as is apparent from FIG.
One end 29 of the first strip-shaped body portion 22 in the portion 27 of
In this case, both end portions 33-1 and 3 of the second strip-shaped body portion 23 are
3-2 and 3-2 are fixed in a state of being overlapped with each other, and in some cases, they are fixed to each other by sewing with a thread other than the binding thread 26 or by an appropriate joining means. Is also good.

That is, in the energy absorbing unit 30 according to the present invention, the first strip-shaped body portion 22 is overlapped with the second strip-shaped body portion 23 from the manufacturing process to the time immediately before use. The both end portions 33-1 and 33-2 thus formed and one end portion 29 of the first strip-shaped body portion are temporarily fixed so as not to be separated. Further, in the first portion 28 of the energy absorbing unit 30 according to the present invention, the first strip-shaped body portion 22 and the second strip-shaped body portion 23 are separately used. Therefore, it is not necessary to adopt the above-mentioned configuration, but in order to improve the handleability in the manufacturing process, the first portion in the second portion 27 is used.
One end portion 29 of the strip-shaped body portion 22 and the second strip-shaped body portion 23
It may be desirable that both end portions 33-1 and 33-2 are temporarily fixed in a state of being superposed on each other.

Energy absorbing unit 30 according to the present invention
In the actual use, as shown in FIG. 2, for example, in the first portion 28, the overlapped end portions of the second strip portion 23 are used. 33-1 and 33
-2 between the first strip-shaped body portion 22 and the second strip-shaped body portion 23. Both ends 33 overlapped
It is used by being pulled out in an oblique direction from between -1 and 33-2 with respect to the second strip-shaped body portion 23.

Specifically, for example, the first strip-shaped body portion 22 is inserted into an annular metal fitting (D ring) 8 connected to a rope or belt 9 on the hook side as shown in FIG. The second strip-shaped body portion 23 is opened and expanded in a plane and connected to the safety belt 11 on the human body side.

Energy absorbing unit 30 according to the invention
In this case, it is desirable that the width d of the first strip-shaped body portion 22 is set to approximately half the width D of the second strip-shaped body portion 23, whereby the first strip-shaped body portion 22 is It becomes possible to easily and efficiently insert the strip-shaped body portion 22 of the first strip-shaped body portion 22 into the annular metal fitting (D ring) 8 connected to the rope or the belt 9 on the hook side. Ring fitting (D ring)
It is also possible to maintain the strength between 8 and 8 at a sufficient level.

On the other hand, in the second strip portion 23,
In the state before use, it is folded to half the width of the standard width of the conventional safety belt, but when using it,
It can be opened and returned to a width substantially the same as the reference width of the conventional safety belt, and its end can be connected to the safety belt 11 on the human body side very easily by the same method as the conventional one. Therefore, in the energy absorbing unit 30 of the present invention, in addition to being excellent in overall workability, in the energy absorbing unit 30, the integrated portion 29 which is usually the second portion is The predetermined length is set and held in a specific container or holding means in a folded state, but in the energy absorbing unit 30 according to the present invention, the width can be set to half of that of the conventional one. It is possible to reduce the size and weight of the container or the holding means.

As the above holding means, for example, a heat shrinkable tube, an appropriate storage case, etc. can be used. In other words, in the energy absorbing unit 30 according to the present invention, the movement of the human body during work at height causes the first belt-shaped body portion, that is, the core belt 22 and the annular metal fitting (D ring) 8 in the separating portion 28 to move. The wear between the gaps often becomes a problem, but since the core belt 22 or the multi-woven structure such as double weave is adopted in the present invention, the core belt 22 is necessarily strong. Wear resistance is improved and safety is improved.

Further, in the energy absorbing unit 30 of the present invention, the energy absorbing property is improved. That is, even if the energy absorbing unit 30 according to the present invention is used and unfortunately falls and drops during high-altitude work, the energy absorbing unit 3 according to the present invention is used.
0, a first strip-shaped body portion 22 joined to the annular metal fitting (D ring) 8 in the first portion 28 and a second strip-shaped body portion 23 connected to the safety belt 11. The drop energy is applied between the two, and the binding yarn 2 that joins the first strip-shaped body portion 22 and the second strip-shaped body portion 23 by the load.
6 breaks and absorbs the falling energy.

The principle of absorbing impact energy in this case is as follows.
A conventional energy absorbing unit simply cuts a sewing thread or a binding thread in a two-dimensional plane by applying impact energy in a direction in which both narrow belts are pulled leftward and rightward in directions different from each other by about 180 degrees. While energy is absorbed while the energy absorption unit 30 according to the present invention is used, the first belt portion, that is, the core belt 2
When the drop belt 2 and the sheath belt 23, which is the second strip-shaped body portion, receive a drop impact energy, a tensile force acts in an oblique direction on each other, and the sheath belt 23 is bent from the core portion belt 22 while turning. Since a state is created in which the binder yarns 26 are separated so that they are peeled off, energy is applied to each of the binder yarns 26 in an oblique direction, and the binder yarns 26 are not cut at the same time, and the binder yarns 26 are successively cut in a stepwise manner. It is designed to break.

That is, in the energy absorbing unit 30 according to the present invention, when the drop impact energy is received, the binding yarns 26 forming the second portion 27 are three-dimensionally and three-dimensionally broken at random. As a result, the drop impact energy can be absorbed evenly, and the drop impact energy absorption waveform can be made into a flat and stable waveform.

That is, as shown in FIG. 4 (C), the energy absorption waveform of the energy absorption unit 30 according to the present invention has a very stable and smooth waveform, whereas the conventional energy absorption waveform shown in FIG. Figure 4 for the unit
Shows the drop impact energy absorption waveform as shown in (A),
Further, the conventional energy absorption unit shown in FIG. 5 has a drop impact energy absorption waveform as shown in FIG. 4 (B), and in each case, a considerable variation occurs when the drop impact energy is absorbed. Since a strong impact is applied to the human body, there is a great risk of damaging the human body, whereas the energy absorbing unit 30 according to the present invention can absorb the drop impact energy evenly as described above. Therefore, it can be seen that the configuration of the energy absorbing unit according to the present invention is also excellent in terms of safety for the human body.

The absorption waveform of the impact energy shown in FIG.
According to the Ministry of Labor safety zone standard, 1.5 kg of 75 kg sandbag
m The absorption state of energy when dropped is measured by changing the impact load along the time axis, and the maximum impact load at the time of fall according to the safety zone standard of the Ministry of Labor is 900 kg, while at the time of fall The energy absorbing unit designed to have a maximum impact load of about 400 kg is used. That is, the energy absorbing unit 30 according to the present invention not only improves the workability in manufacturing, but also stabilizes the quality of the energy absorbing unit itself, downsizes the shape, improves workability at high places, and absorbs human body energy drop. It is possible to provide an excellent energy absorption unit that meets all the demands of the industry, such as improvement of the property.

Specific examples of the method of manufacturing the energy absorbing unit 30 according to the present invention will be described in detail below as examples. That is, the energy absorption unit 30 according to the present invention
Is basically manufactured by weaving or knitting using a narrow loom, a needle loom, a narrow knitting machine, etc., and in particular, a double knitting structure, a multiple knitting structure having a double knitting structure or more. It is manufactured by combining tissues.

An example of a narrow loom suitable for producing the energy absorbing unit according to the present invention is disclosed in Japanese Patent Application No. 5-159302, "Heavy belt and its manufacturing apparatus", which the applicant of the present application has already filed. The loom disclosed can be used. That is, in the present invention, the first
It is necessary that the strip-shaped body portion 22 and the second strip-shaped body portion 23 are formed in multiple layers in a superposed state, and for that purpose, it is necessary to adopt at least a triple woven knitting structure.

Further, in the present invention, it is necessary to alternately form the separating portion 28 which is the first portion and the integral portion 27 which is the second portion. In the latter case, the connecting portion 28 is connected. The layers of the triple weave knitting structure are integrally joined by the thread 26, and in the former case, the binding thread 26 is connected to the first strip portion 22 or the second band portion 22.
Is woven into one of the strip-shaped body portions 23 and woven or knitted so that the layers can be separated from each other. First, FIG. 7 shows an example of a weave design in the case of forming the integrated portion 27 which is the second portion in the energy absorption unit 30 according to the present invention.

Energy absorbing unit 30 according to the present invention
In this case, it is desirable that the warp yarns and the weft yarns are both synthetic fiber multifilament yarns, and when they are produced by weaving, it is desirable that they are woven with at least two picks.
In the figure, the warp yarn described as the ground is the first strip-shaped body portion 22.
And warp threads constituting the second strip-shaped body portion 23, respectively, and the warp thread described as hanging is a connecting thread that connects the first strip-shaped body portion 22 and the second strip-shaped body portion 23 to each other. The knot 26 is shown.

In a specific example of the present invention, the second belt portion or sheath belt 23 is constituted by the grounds 1 and 4 in FIG. 7, and the first belt portion or core is constituted by the grounds 2 and 3. The belt 22 is formed. Further, the suspensions 1, 2, 3 and 4 form an integral part by connecting the sheath belt 23 and the core belt 22 once in 16 picks. The weft yarns 1, 2, 3, and 4 indicate the respective driving orders. That is, in the above-mentioned specific example, the weft is woven with two shuttles, and an example of the driving order is as follows. 1.1 The stitches are punched in to form the upper layer of the core belt. 2.2 The stitches are punched in to form the upper layer of the sheath belt. 3.1 Form the lower layer of the core belt by driving in the stitches. 4.2 The stitches are punched in to form the lower layer of the sheath belt. 5.1 The stitches are punched in to form the upper layer of the core belt. 6.2 The stitches are punched in to form the lower layer of the sheath belt. 7.1 The stitches are punched in to form the lower layer of the core belt. 8.2 The stitches are punched in to form the upper layer of the sheath belt.

By driving the two types of shuttles in the order described above, the energy absorbing unit 30 of the present invention having a multi-woven structure having a cross section as shown in FIG. 8 is formed. FIG. 9 shows an example of the weave design in the case of forming the separation part 28 which is the first part in the energy absorbing unit according to the present invention.

The display of FIG. 9 is the same as the display of FIG. 7 described above, but in view of the tissue, the binding yarn 26 has the first band-shaped body portion 22.
The structure woven in is shown. That is, in FIG. 9, the bases 1 and 4 form the second belt-shaped body portion, that is, the sheath belt 23, and the grounds 2 and 3 form the first belt-shaped body portion, that is, the core belt 2.
Make up 2. The suspensions 1 and 2 are binding yarns for the core belt 22 itself, and the suspensions 3 and 4 are woven in alignment with the grounds 2 and 3 of the core belt 22. That is, all the binding yarns 26 are woven into the core belt 22, and the core belt 22 and the sheath belt 23 are separated from each other to form the separation portion 28.

In the energy absorbing unit according to the present invention, the binding yarn is woven by appropriately combining the woven structures as shown in FIGS. 10 (A) to 10 (D). In addition, in FIG. 10 (A) to FIG. 10 (D), ◯ indicates a weft. Further, the energy absorption unit 30 according to the present invention
As another aspect, a part of the main woven structure or the main knitted structure constituting the above-described second portion may include a woven structure or a knitted structure different from the main woven structure or the main knitted structure.

That is, basically, the weaving or knitting structure of the second portion 27, which is an integral part of the energy absorbing unit according to the present invention, is uniform from the viewpoint of easiness of manufacture and production cost. Although it is desirable that the second portion 2
If the length of 7 is not sufficient, it cannot be said that there is no danger that the energy absorption unit will separate before the worker's drop motion is stopped, so the occurrence of such a dangerous state is prevented. For the purpose, it is desirable to provide the stopper means 32 on a part of the integrated portion 27 which is the second portion of the energy absorbing unit.

Therefore, in another embodiment of the present invention, as the stopper means 32, a main woven structure or a main knit structure is formed in a part of the main woven structure or the main knit structure constituting the above-mentioned second portion. A function as a stopper is provided by including a woven structure or a knitted structure different from the structure. Therefore, the organization is the second
It is desirable that the structure has a tensile strength that is several steps higher than the tensile strength of the main woven structure or the main knitted structure that constitutes part (1).

The stopper means 32 having a weave design or a knit design different from the main weave design or the main knit design according to the present invention is provided at the end of the second part or a part close to the end of the second part. It is desirable that they are arranged along the width direction of No. 2. FIG. 11 shows an example of the weaving structure that constitutes the stopper means 32.

Since the display of FIG. 11 is similar to that of FIG. 7,
Although a detailed description is omitted, in the stopper means 32, the tissues of the grounds 1 and 2 are exchanged with each other, and the tissues of the fabrics 3 and 4 are exchanged with each other, so that the core belt portion 22 is not formed until then.
Since all the warp yarns constituting the sheath belt 23 are replaced with each other, it is possible to retain the strength that is approximately twice that of the conventional tissue.

Next, an example of specific manufacturing conditions of the energy absorbing unit 30 according to the present invention will be described. Example 1 (when the same kind of fiber is used) 1st strip | belt-shaped body part Warp yarn Polyester filament yarn 1260d / 2 Number of yarns 135 Weft polyester filament yarn 1500d / 1 Number of hammering 31-23 pick / 3CM Weave 2/2 Duplex Weave 2nd band part Warp Polyester filament thread 1260d / 2 Number of threads 148 Weft Polyester filament thread 1260d / 2 Number of hammering 31-23 picks / 3CM Woven structure 2/2 Double weave Binding thread Polyester filament thread 750/1 Number of yarns: 188 Weave design In the second part, it is connected once in 16 picks, and in the first part, it is fully woven into the core belt with a double weave of 1/1 or 2/2. Others Separate unit strength Strong core belt 2430kgf Sheath belt 2750kgf Maximum load at integrated part energy absorption 390kgf

Example 2 (when different kinds of fibers are used) First belt portion Warp yarn Nylon filament yarn 1260d / 2 Number of yarns 135 Weft Nylon filament yarn 1680d / 1 Number of hammering 31-23 picks / 3CM Weave design 2 / 2 Double weave 2nd band part Warp Nylon filament yarn 1260d / 2 Number of threads 148 Weft Nylon filament yarn 1260d / 2 Number of hammering 31-23 picks / 3CM Weave structure 2/2 Double weave Binding yarn Polyester filament yarn 750/1 Number of yarns 128 woven structure In the second part, the knitting is performed once in 16 picks, and in the first part, it is fully woven into the core belt by a double weave of 1/1 or 2/2. Others Separate unit strength Strong core belt 2650kgf Sheath belt 2900kgf Maximum load at integrated part energy absorption 420kgf

Example 3 (when using stopper means) Basically the same as Example 2, and the structure of the stopper portion is also the same as in FIG. Maximum load at the time of energy absorption of the integral part 420 kgf Strength of stopper means 1150 kgf When the specific configuration of the energy absorbing unit 30 according to the present invention is summarized, it substantially consists of the first strip-shaped body portion and the second strip-shaped body portion. In a narrow belt having a core-sheath structure, the first
The weft yarns of the strip-shaped body portion and the second strip-shaped body portion are joined by a plurality of binding yarns, and at the same time including the second portion which is an integral portion, the weft yarn is connected to the second portion, All of the binding yarns are woven or knitted into one of the first strip-shaped body portion or the second strip-shaped body portion to completely separate the first strip-shaped body portion and the second strip-shaped body portion. Including the independent first part,
The first strip-shaped body portion and the second strip-shaped body portion having an arbitrary length are alternately continuously woven or braided, and at least one portion of the first strip-shaped body portion and at least one location The energy absorption unit is configured by cutting the belt at an arbitrary position so as to include the second band-shaped body portion and configuring a belt unit.

[0049]

Since the energy absorbing unit according to the present invention has the basic structure as described above, the energy absorbing unit can be used particularly in the separating portion, that is, in the first portion pointed out in the present invention. The belt portion, that is, the first strip-shaped body portion, is formed into a narrow strip-shaped body that can be easily inserted into an annular metal member (D ring) connected to a rope, a hook, etc. Needless to say, the work of inserting into the annular metal member (D ring) is simple and easy, so that the work efficiency is significantly improved. On the other hand, the other belt part, which is connected to the safety belt for the human body, that is, the second belt-shaped body part, has a width substantially the same as that of the conventional impact energy absorbing belt by expanding and using it in a plane shape. Since the belt-like body is formed, it has the same function and effect as the conventional impact energy absorbing belt in terms of performance. Further, one of the salient features of the energy absorbing unit according to the present invention is that when a breaking force acts between the first strip-shaped body portion and the second strip-shaped body portion, the conventional impact energy 2 in the absorption belt
While the binding yarns between the belts are broken one by one at the same time and sequentially in a plane, the breaking force of the first strip-shaped body portion and the second strip-shaped body portion is oblique to each other. As a result, the binding yarn that constitutes the integrated portion that is the second portion breaks three-dimensionally (three-dimensionally) and at random, so that the breaking energy can be absorbed uniformly, so that it can be applied to the human body. It is possible to absorb impact energy by stable fracture without causing intermittent impact changes.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a configuration of an energy absorption unit according to the present invention.

FIG. 2 is a diagram illustrating an example of a method of using the energy absorption unit.

FIG. 3 (A) to FIG. 3 (C) are diagrams illustrating an example of the configuration of an energy absorption unit according to the present invention.

FIG. 4 (A) to FIG. 3 (C) are waveform diagrams comparing the impact absorption energy characteristics of the energy absorption unit according to the present invention and the conventional energy absorption unit.

FIG. 5 is a diagram showing an example of a conventional energy absorption unit.

FIG. 6 (A) is a diagram showing another example of the conventional energy absorption unit, and FIGS.
FIG. 6 is a diagram illustrating a configuration example of a conventional energy absorption unit.

FIG. 7 is a woven structure diagram showing an example of a woven structure of the integrated portion 27 which is the second portion of the energy absorbing unit according to the present invention.

FIG. 8 is a cross-sectional view illustrating a woven structure of the energy absorbing unit.

FIG. 9 is a woven structure diagram showing an example of the woven structure of the separation portion 28 which is the first portion of the energy absorbing unit according to the present invention.

FIG. 10 is a diagram showing an example of a weave design of the binding yarn 26 used in the energy absorbing unit according to the present invention.

FIG. 11 is a woven structure diagram showing an example of the woven structure of the stopper portion 32 of the energy absorbing unit according to the present invention.

[Explanation of symbols]

 1, 30 ... Energy absorption unit 2, 3 ... Belt 4 ... Sewing thread 5 ... Integrated part 6 ... Separation part 8 ... Connection ring (D ring) 11 ... Safety band 22 ... First band part 23 ... Second band Part 24 ... Weft of the first strip part 25 ... Weft of the second strip part 26 ... Binder 27 ... Second part, integrated part 28 ... First part, Separation part 29 ... First One end portion of the strip-shaped body portion 31 ... Continuous warp threads 32 ... Stopper portions 33-1 and 33-2 ... Both end portions of the second strip-shaped body portion

Claims (16)

[Claims] 1. A first strip-shaped body portion having a first width and the first strip-shaped body portion are configured separately, and are larger than a first width of the first strip-shaped body portion. An energy absorption unit configured with a second strip portion having a second width,
In the energy absorbing unit, the first strip-shaped body portion and the second strip-shaped body portion are separated from each other, and the second strip-shaped body portion is the first strip-shaped body. A second state in which both parts are integrally fixed in a state of substantially enclosing the part
An energy absorption unit characterized by being arranged adjacent to the part of. 2. The second width of the second strip-shaped body portion is set to be approximately twice the first width of the first strip-shaped body portion. The energy absorption unit described. 3. The first portion and the second portion, which are composed of the first strip-shaped body portion and the second strip-shaped body portion, are all continuous by a woven structure or a knitted structure using continuous warp yarns. The energy absorption unit according to claim 1 or 2, wherein the energy absorption unit is configured integrally. 4. The second portion has an integral structure in which the first strip-shaped body portion and the second strip-shaped body portion are connected and fixed to each other by an appropriate binding yarn. The energy absorption unit according to any one of claims 1 to 3, which is characterized by the above. 5. The one end portion of the first strip-shaped body portion in the second portion is fixed to each other in a state where both end portions of the second strip-shaped body portion are overlapped with each other. The energy absorption unit according to any one of claims 1 to 4, characterized in that: 6. The first portion is configured such that the first strip-shaped body portion is laterally pulled out from between the overlapping ends of the second strip-shaped body portion. The energy absorbing unit according to any one of claims 1 to 5, wherein 7. The first strip-shaped body portion is inserted through an annular metal fitting (D ring) connected to a rope or a belt on the hook side, and the second strip-shaped body portion is The energy absorbing unit according to any one of claims 1 to 6, wherein the energy absorbing unit is opened and expanded in a plane and is connected to a safety belt on the human body side. 8. The first strip-shaped body portion includes the overlapped end portions of the second strip-shaped body portion and one end portion of the first strip-shaped body portion from during manufacturing to immediately before use. The energy absorbing unit according to claim 1, wherein the energy absorbing unit is temporarily fixed so as not to be separated. 9. The main weave design or the main knit design forming part of the second part includes a weave design or a knit design different from the main weave design or the main knit design. 3. The energy absorption unit described in 3. 10. A woven or knitted structure different from the main woven or knitted structure is arranged at an end of the second part or a part close to the end and along the second width direction. The energy absorbing unit according to claim 9, wherein 11. The energy absorbing unit according to claim 3, wherein the woven structure of the first strip-shaped body portion in the first portion and the second portion has a multiple woven structure. 12. The energy absorbing unit according to claim 3, wherein the woven structure of the second strip portion in the first portion and the second portion has a multiple woven structure. 13. The woven structure integrally forming the first strip-shaped body portion and the second strip-shaped body portion in the second portion has a multi-woven structure. Item 3. The energy absorption unit according to Item 3. 14. A narrow belt having a core-sheath structure which is substantially composed of a first strip-shaped body portion and a second strip-shaped body portion.
The weft yarns of the strip-shaped body portion and the second strip-shaped body portion are joined by a plurality of binding yarns, and at the same time including the second portion which is an integral portion, the weft yarn is connected to the second portion, All of the binding yarns are woven or knitted into one of the first strip-shaped body portion or the second strip-shaped body portion to completely separate the first strip-shaped body portion and the second strip-shaped body portion. Including the independent first part,
The first strip-shaped body portion and the second strip-shaped body portion having an arbitrary length are alternately continuously woven or braided, and at least one portion of the first strip-shaped body portion and at least one location An energy absorbing unit characterized in that a belt is formed by cutting the belt at an arbitrary position so as to include a second strip portion. 15. The warp yarns, the weft yarns, and the binding yarns in the first strip-shaped body portion and the second strip-shaped body portion are composed of the same kind of synthetic fiber. The energy absorption unit according to any one of 1. 16. The warp yarns, the weft yarns, and the binding yarns in the first strip-shaped body portion and the second strip-shaped body portion are made of different kinds of synthetic fibers. The energy absorption unit according to any one of 1.