JP7049964B2 - Harness type safety belt - Google Patents

Description

The present invention relates to a harness type safety belt used to prevent a worker from falling in a high place.

In aerial work, a harness-type safety belt is used to prevent workers from falling. The harness type safety belt includes left and right shoulder belts, left and right thigh belts, and a chest belt that connects the left and right shoulder belts to each other.

The chest belt is provided with a resin connecting tool that divides the chest belt into two, and by separating the chest belt with the resin connecting tool, the wearability of the harness type safety belt can be improved (for example). See Patent Document 1).

Japanese Unexamined Patent Publication No. 9-16806

However, due to the impact of the load applied by the fall of the worker, the resin connector that connects the chest belts breaks, and the chest belts separate, widening the gap between the left and right shoulder belts, and the left and right shoulder belts. There is a problem that the worker is likely to drop out from the middle.

In addition, although it is conceivable to improve the load capacity of the connecting metal fitting by using a metal connecting metal fitting as the connecting metal fitting of the chest belt, the weight is increased and the workability is lowered by making the connecting metal fitting made of metal. At the same time, there is a problem that the cost increases.

In view of such circumstances, it is an object of the present invention to provide a harness type safety belt that reduces the cost and suppresses the breakage of the resin connector of the chest belt to prevent the operator from falling off.

An aspect of the present invention for solving the above problems is a left shoulder formed in an annular shape by a buckle having a D ring to which a lanyard is connected, a first belt above the buckle, and a second belt below the buckle. The right shoulder belt portion formed in an annular shape by the belt portion, the second belt above the buckle, and the first belt below the buckle, and the first belt and the second belt are sewn to each other. Below the attached portion, the left thigh belt portion formed in an annular shape by connecting one end portion of the first belt and one end portion of the second belt, and the first belt and the second belt. Below the portion where the belts are sewn to each other, the right thigh belt portion formed in an annular shape by connecting the other end of the first belt and the other end of the second belt, and the right. The right chest belt with one end fixed to the shoulder belt, the left chest belt with one end fixed to the left shoulder belt, and the right chest belt and the left chest belt are provided on each of the right chest belt and the left chest belt so that they can be attached to and detached from each other. A load provided with a resin connector provided and provided on at least one of the right chest belt and the left chest belt to maintain the chest belt in a short bent state and pull the chest belt. It is a harness type safety band characterized by having a shock absorbing portion for releasing the bent state of the chest belt.

Here, it is preferable that the shock absorbing portion is formed by folding back the chest belt and sewing it in layers.

Further, the shock absorbing portion is preferably a rubber band having a length shorter than that of the chest belt and having both ends fixed to the chest belt.

Further, it is preferable that the shock absorbing portion releases the bent state of the chest belt with a load smaller than the breaking strength of the resin connector and extends the chest belt.

In the present invention, since the impact of the load applied by the drop can be absorbed by the impact absorbing portion, the resin connector for connecting the chest belt is prevented from breaking due to the impact of the load applied by the drop, and the resin connection is made. It is possible to prevent the operator from falling off from between the left and right shoulder belts due to the breakage of the tool. In addition, it is not necessary to use expensive and heavy metal connecting metal fittings as the connecting tool for connecting the chest belt, the cost can be reduced, and the harness type safety belt can be made by reducing the size and weight of the connecting metal fittings. It is possible to improve the workability of the worker who wears it.

It is a front view of the harness type safety belt which concerns on Embodiment 1 of this invention. It is a front view and the back view which the worker attached the harness type safety belt which concerns on Embodiment 1 of this invention. It is an enlarged view of the main part of the harness type safety belt which concerns on Embodiment 1 of this invention. It is a figure which shows the operating state of the harness type safety belt which concerns on Embodiment 1 of this invention. It is a figure which shows the operation of the shock absorbing part of the harness type safety belt which concerns on Embodiment 1 of this invention. It is a figure which shows the operation of the shock absorbing part of the harness type safety belt which concerns on Embodiment 2 of this invention.

Hereinafter, the present invention will be described in detail based on the embodiments.

(Embodiment 1)
1 is a front view of the harness type safety belt according to the first embodiment of the present invention, FIG. 2 is a front view and a rear view of the harness type safety belt worn by an operator, and FIG. 3 is FIG. 1 It is an enlarged view of the chest belt of the harness type safety belt of.

As shown in FIGS. 1 and 2, the two belts 11 and 12 constituting the harness type safety belt 10 intersect with each other by the buckle 13 at the upper part of the back surface of the worker 1 who is the wearer who wears the harness type safety belt 10. It is held in the state of being used.

In the two belts 11 and 12 held by such a buckle 13, one belt 11 extending upward from the buckle 13 and the other belt 12 extending downward from the buckle 13 are annular. It is sewn so that it becomes. A portion formed in an annular shape by the buckle 13, the belt 11 above the buckle 13, and the belt 12 below the buckle 13 is the right shoulder belt portion 14 to be hung on the right shoulder of the worker 1.

Similarly, the other belt 12 extending upward from the buckle 13 and the one belt 11 extending downward from the buckle 13 are sewn together so as to form an annular shape. A portion formed in an annular shape by the buckle 13, the belt 12 above the buckle 13, and the belt 11 below the buckle 13 is the left shoulder belt portion 15 to be hung on the left shoulder of the worker 1.

Further, the end portion of one belt 11 forming the right shoulder belt portion 14 and the other belt 12 are provided with connecting tools 16 and 17 at the end portions below the portions sewn to each other, respectively. There is. The belt 11 is provided with a ring 18 whose end portion is passed through the connector 16 and folded back to maintain the belt 11 in an overlapping state. In the present embodiment, the belt 11 is provided with two rings 18, but the number of rings 18 is not limited, and the number of rings 18 may be one or three or more. .. By providing the ring 18 on the belt 11 in this way, the length of the belt 11 can be adjusted.

Further, the connecting tools 16 and 17 are removable from each other, and are connected to the other end of one of the belts 11 forming the right shoulder belt portion 14 below the portion where the belts 11 and 12 are sewn to each other. It is formed in an annular shape by connecting the other end of the other belt 12 with the connecting tools 16 and 17. The portion formed in an annular shape by the belts 11 and 12 in this way is the right thigh belt portion 19. That is, the connecting tool 16 of one of the belts 11 below the portion where the belts 11 and 12 were sewn to each other was moved forward from the rear of the operator through the inseam, and the moved connecting tool 16 was sewn. The right thigh belt portion 19 is attached to the right thigh of the worker 1 by attaching the connecting tool 17 of the other belt 12 below the portion and the front surface of the worker 1.

Similarly, the other belt 12 forming the left shoulder belt portion 15 and the one belt 11 are provided with connecting tools 20 and 21 at their respective ends below the portions sewn to each other. The belt 12 is provided with a ring 22 whose end portion is passed through the connector 20 and folded back to maintain the belt 12 in a stacked state. In the present embodiment, the belt 12 is provided with two rings 22, but the number of rings 22 is not limited and may be one or three or more. .. By providing the ring 22 on the belt 12 in this way, the length of the belt 12 can be adjusted.

Further, the connectors 20 and 21 are detachable from each other, and the end of one belt 11 and the end of the other belt 12 forming the left shoulder belt portion 15 below the portion sewn to each other. It is formed in an annular shape by connecting the tips of the and to the connecting tools 20 and 21. This annular portion is the left thigh belt portion 23. That is, the connecting tool 20 of the other belt 12 below the portion sewn to each other is moved forward from the rear of the operator through the inseam, and the moved connecting tool 20 is below the sewn portion. The left thigh belt portion 23 is attached to the left thigh of the operator 1 by attaching the connecting tool 21 of one of the belts 11 and the front surface of the operator.

The materials of the connecting tools 16 and 17 forming the right thigh belt portion 19 and the connecting tools 20 and 21 forming the left thigh belt portion 23 are not particularly limited, and for example, those made of resin or metal are used. be able to.

Further, as shown in FIGS. 1 and 2B, the belt 11 below the sewn portion of the right thigh belt portion 19 and the belt below the sewn portion of the left thigh belt portion 23. Both ends of the buttock belt 24 are sewn to the belt 12 of the above.

Further, the belts 11 and 12 below the buckle 13 and the buttock belt 24 are sewn with a backing cloth 25 provided so as to close the opening surrounded by the belts 11 and 12 and the buttock belt 24. It is attached. In the present embodiment, the back support cloth 25 is made of a mesh cloth. Of course, the back support cloth 25 is not limited to the mesh cloth.

Further, as shown in FIG. 3, one end of the right chest belt 26 is fixed to the right shoulder belt portion 14, and one end of the left chest belt 27 is fixed to the left shoulder belt portion 15. The right chest belt 26 and the left chest belt 27 are fixed to the right shoulder belt portion 14 and the left shoulder belt portion 15, respectively. In this embodiment, the ends of the right chest belt 26 are folded back and sewn so as to form an annular shape. This is done by inserting the right shoulder belt portion 14 into the ring provided at the end of the right chest belt 26. Similarly, the left chest belt 27 is also sewn so that the end portion of the left chest belt 27 is folded back and formed into an annular shape, and the left shoulder belt portion 15 is inserted through the ring provided at the end portion of the left chest belt 27. It is fixed. That is, the right chest belt 26 and the left chest belt 27 can move in the vertical direction along the right shoulder belt portion 14 and the left shoulder belt portion 15, respectively. By fixing the right chest belt 26 and the left chest belt 27 so as to be movable in the vertical direction along the right shoulder belt portion 14 and the left shoulder belt portion 15 in this way, the right chest belt 26 and the left chest belt 27 can be moved. The position can be adjusted according to the worker 1. Of course, the method of fixing the right chest belt 26 and the left chest belt 27 to the right shoulder belt portion 14 and the left shoulder belt portion 15, respectively, is not limited to those described above, and for example, the right chest belt 26 and the left chest. Each of the ends of the belt 27 may be sewn directly to the right shoulder belt portion 14 and the left shoulder belt portion 15.

Further, resin connectors 28 and 29 that can be attached to and detached from each other are provided at the other ends of the right chest belt 26 and the other ends of the left chest belt 27, respectively. That is, the right chest belt 26 and the left chest belt 27 can be connected and separated by the resin connecting tools 28 and 29. In the present embodiment, the right chest belt 26 and the left chest belt 27 connected by the resin connecting tools 28 and 29 are referred to as chest belts.

The right chest belt 26 is provided with a ring 30 whose end is passed through a resin connector 28 and folded back to maintain the right chest belt 26 in an overlapped state. By providing the ring 30 on the right chest belt 26 in this way, the length of the right chest belt 26 can be adjusted. Similarly, the left chest belt 27 is provided with a ring 31 whose end is passed through a resin connector 29 and folded back to maintain the left chest belt 27 in an overlapped state. By providing the ring 31 on the left chest belt 27 in this way, the length of the left chest belt 27 can be adjusted.

At least one of the right chest belt 26 and the left chest belt 27, in the present embodiment, the right chest belt 26 is provided with a shock absorbing portion 32.

The shock absorbing portion 32 maintains the right chest belt 26 in a short bent state, and releases the bent state of the right chest belt 26 by the force of pulling the right chest belt 26 to extend the right chest belt 26. be. The shock absorbing portion 32 of the present embodiment is obtained by folding back the right chest belt 26 and sewing it in layers.

Such a shock absorbing portion 32 bends the right chest belt 26 before the resin connectors 28 and 29 break when a shock is applied in the direction of pulling the right chest belt 26 and the left chest belt 27. By releasing the state of being in the state and extending the right chest belt 26, the impact applied to the right chest belt 26 and the left chest belt 27 is absorbed.

Here, the buckle 13 of the harness type safety belt 10 is provided with a D ring 33, and as shown in FIG. 4, when the worker 1 falls, the buckle 13 is suspended by the lanyard 100 connected to the D ring 33. Can be lowered. At this time, if the lanyard 100 is provided with a shock absorber, the load due to the impact when the lanyard 100 is fully extended is reduced by the shock absorber of the lanyard 100, so that the right shoulder belt portion 14 and the left shoulder belt portion 15 are combined. The load applied in the direction of separating the connecting chest belts, that is, the right chest belt 26 and the left chest belt 27 connected by the resin connecting tools 28 and 29 is reduced, and the resin connecting tools 28 and 29 are less likely to break. For example, when a free fall test is performed on a falling body having a weight of 85 kg using a lanyard with a shock absorber having a total length of 1.7 m, the load applied to the falling body is about 4.1 kN.

On the other hand, if the shock absorber provided in the lanyard 100 cannot sufficiently absorb the impact caused by dropping, or if the shock absorber of the lanyard 100 is maintained in a fully extended state and does not function well, the impact caused by dropping may occur. , The resin connector 28 when the resin connector 28 and 29 connecting the right chest belt 26 and the left chest belt 27 connecting the right shoulder belt portion 14 and the left shoulder belt portion 15 are applied as a load in the direction of separation. , 29 may break. For example, when a 1 m wire is used as a lanyard 100 without a shock absorber on a falling body weighing 85 kg, the load applied to the falling body is 12 kN to 16 kN, which is about 3 to 4 times that when a lanyard with a shock absorber is used. Impact load will be applied. Therefore, when the shock absorber provided in the lanyard 100 cannot sufficiently absorb the impact due to the fall, or the shock absorber of the lanyard 100 is maintained in a fully extended state, the shock absorber is substantially provided in the lanyard 100. In the same state as when the chest belt is not used, the load applied in the direction of spreading the chest belt also increases, and the resin connectors 28 and 29 may not be able to withstand the load and may break.

Then, when the resin connectors 28 and 29 are broken and the connection state between the right chest belt 26 and the left chest belt 27 is released, a load is applied in the direction in which the right shoulder belt portion 14 and the left shoulder belt portion 15 expand. The gap between the right shoulder belt portion 14 and the left shoulder belt portion 15 is widened, and the upper body of the worker 1 slips through the widened gap between the right shoulder belt portion 14 and the left shoulder belt portion 15, and the worker 1 Only the right thigh belt portion 19 and the left thigh belt portion 23 are attached to the belt and are suspended upside down. In the state where the worker 1 is suspended upside down in this way, the worker 1 slips through the right thigh belt portion 19 and the left thigh belt portion 23, and as a result, the worker 1 falls off from the harness type safety belt 10. There is a risk that it will end up.

In the present embodiment, as shown in FIG. 5A, the right chest belt 26 and the left chest connected by the resin connectors 28 and 29 by providing the shock absorbing portion 32 on the right chest belt 26 of the chest belt. When a load is applied as an impact in the direction in which the belt 27 separates, as shown in FIG. 5B, the impact absorbing portion 32 releases the bent state of the right chest belt 26 and extends the right chest belt 26. By doing so, the impact applied to the right chest belt 26 and the left chest belt 27 is absorbed.

When the load due to the fall of the worker 1 is applied to the harness type safety belt 10 in this way, the impact absorbing unit 32 absorbs the impact applied to the chest belt, thereby connecting the right chest belt 26 and the left chest belt 27. It is possible to prevent the resin connectors 28 and 29 from breaking due to the impact of dropping. Further, in the present embodiment, when the shock absorbing portion 32 absorbs the shock due to the drop, the right chest belt 26 is only slightly extended, so that the gap between the right shoulder belt portion 14 and the left shoulder belt portion 15 is remarkably large. It does not spread, and it is possible to prevent the worker 1 from falling off between the right shoulder belt portion 14 and the left shoulder belt portion 15.

Therefore, when the shock absorber of the lanyard 100 is fully extended and the shock absorber cannot sufficiently absorb the impact due to the fall, or the shock absorber is maintained in the fully extended state and the shock absorber is not substantially provided. Even in the same state as above, the shock absorbing unit 32 can suppress the breakage of the resin connectors 28 and 29. Of course, even when the shock absorbing portion 32 is provided on the chest belt as in the present embodiment, by using the lanyard 100 with a shock absorber that operates normally, the impact load due to the drop can be further applied to the lanyard 100 as well. Needless to say, it can be absorbed and the breakage of the resin connectors 28 and 29 can be further suppressed. Further, although it is conceivable that the right shoulder belt portion 14 and the left shoulder belt portion 15 or the like are provided with the same shock absorbing portion 32 as that of the present embodiment, when the shock absorbing portion is extended due to the impact due to the drop, the right shoulder belt portion 14 is provided. And the ring of the left shoulder belt portion 15 becomes large, the right shoulder belt portion 14 and the left shoulder belt portion 15 may come off from the shoulder, and the worker 1 may fall off. In the present embodiment, since the shock absorbing portion 32 is provided on the chest belt, the rings of the right shoulder belt portion 14 and the left shoulder belt portion 15 do not become large when the shock absorbing portion 32 absorbs the impact, and the operator 1 can use the shock absorbing portion 32. It is difficult for the worker 1 to fall off from the shoulder to the right shoulder belt portion 14 and the left shoulder belt portion 15. Further, in the present embodiment, by providing the impact absorbing unit 32 that absorbs the impact of dropping, the resin connectors 28 and 29 can withstand the load due to the impact of dropping, that is, can withstand the load of 12 kN to 16 kN. It is not necessary to use a connecting tool such as a metal connecting tool, and small resin connecting tools 28 and 29 that can withstand a low load can be used at low cost.

In order to release the bent state of the chest belt and extend the chest belt before the resin connectors 28 and 29 break, the shock absorbing portion 32 is connected by resin. It is preferable that the tools 28 and 29 operate with a force smaller than the breaking strength, that is, the shock absorbing portion 32 releases the bent state of the chest belt. That is, it is preferable that the load on which the shock absorbing portion 32 operates (the load for releasing the bent state of the chest belt) <the breaking strength of the resin connectors 28 and 29). Since the shock absorbing portion 32 of the present embodiment is obtained by folding back the right chest belt 26 and sewn over and over, the load on which the shock absorbing portion 32 operates is the load obtained by folding back the right chest belt 26 and sewn over and over. It is the load that the right chest belt 26, which has been folded back, extends.

Here, for example, the strength of the resin connector for a 30 mm width belt that can be used as the resin couplers 28 and 29 and the resin connector for a 25 mm width belt was measured by a tensile tester. Three products were tested for the resin connector for 25 mm wide belts. The results are shown in Table 1 below.

As shown in Table 1, for example, when a resin connector for a 30 mm width belt is used as the resin connector 28, 29, the load is smaller than the breaking strength of the resin connector 28, 29, which is 76.5 kgf. It is preferable to set the shock absorbing unit 32 so as to operate. Further, when the resin connectors for 25 mm width belts are used as the resin connectors 28 and 29, the impact absorbing unit 32 is set to operate with a load smaller than the lowest load of 110.2 kgf. Is preferable. That is, it is preferable that the impact absorbing unit 32 operates with a load smaller than 76.5 kgf regardless of which of the resin connecting tools 28 and 29 is used.

In this way, by making the operating load of the shock absorbing portion 32 smaller than the breaking strength of the resin connecting tools 28 and 29, it is possible to ensure that the resin connecting tools 28 and 29 are broken by the impact applied by the drop. Can be prevented.

As described above, in the harness type safety band 10 of the present embodiment, the right shoulder belt portion 14, the left shoulder belt portion 15, the right thigh belt portion 19, the left thigh belt portion 23, and the right shoulder belt portion 14 are formed. The right chest belt 26 having one end fixed, the left chest belt 27 having one end fixed to the left shoulder belt portion 15, and the right chest belt 26 and the left chest belt 27 are provided on each of the right chest belt 26 and the left chest belt 27 so as to be detachable from each other. A load provided on at least one of the right chest belt 26 and the left chest belt 27 to maintain the chest belt in a short bent state and to pull the chest belt. It has a shock absorbing portion 32 that releases the bent state of the chest belt.

By providing the shock absorbing portion 32 on the chest belt in this way, the impact that a load is applied to the chest belt when dropped can be absorbed by the shock absorbing portion 32, and the resin connectors 28 and 29 are broken by the impact. Can be prevented. Therefore, it is possible to prevent the gap between the right shoulder belt portion 14 and the left shoulder belt portion 15 from widening due to the breakage of the resin connectors 28 and 29 due to the impact of the drop, and to prevent the gap between the right shoulder belt portion 14 and the left shoulder belt portion 15 from widening. It is possible to prevent the worker from falling out from the interval and improve the safety. Further, it is not necessary to use an expensive metal connecting metal fitting having a large size and weight as a connecting tool for connecting the right chest belt 26 and the left chest belt 27, and the cost can be reduced, and the connecting tool can be downsized. By reducing the weight, the workability of the worker 1 wearing the harness type safety belt 10 can be improved.

Further, in the harness type safety belt 10 of the present embodiment, it is preferable that the shock absorbing portion 32 is formed by folding back the chest belt and sewing it in layers.

According to this, the shock absorbing portion 32 can be easily provided on the chest belt, and the operation of the shock absorbing portion 32 can be easily visually recognized by checking the state of the lap stitching of the chest belt. By the way, since it is preferable not to reuse the harness type safety belt 10 that has received a large impact even once, has the harness type safety belt 10 received a large impact even once by visually recognizing the operating status of the shock absorbing unit 32? It can be confirmed, and the reuse of the harness type safety belt 10 can be prevented and the safety can be enhanced.

Further, in the harness type safety belt 10 of the present embodiment, the shock absorbing portion 32 releases the bent state of the chest belt with a load smaller than the breaking strength of the resin connectors 28 and 29, and extends the chest belt. Is preferable.

According to this, by making the operating load of the shock absorbing portion 32 smaller than the breaking strength of the resin connecting tools 28 and 29, it is certain that the resin connecting tools 28 and 29 are broken by the impact applied by the drop. Can be prevented.

(Embodiment 2)
FIG. 6 is a diagram showing the operation of the shock absorbing portion of the harness type safety belt according to the second embodiment of the present invention. The same members as those in the above-described embodiment are designated by the same reference numerals, and duplicate description will be omitted.

As shown in FIG. 6A, the right chest belt 26 constituting the harness type safety belt 10 of the present embodiment is provided with a shock absorbing portion 32A. The shock absorbing portion 32A of the present embodiment is made of a band-shaped rubber band, and both ends are sewn with the right chest belt 26 bent short. That is, by sewing both ends of the shock absorbing portion 32A shorter than the bent right chest belt 26 to the right chest belt 26, the shock absorbing portion 32A maintains the short bent state of the right chest belt 26.

As shown in FIG. 6B, such a shock absorbing unit 32A absorbs the shock applied to the chest belt by stretching when a load is applied to the chest belt due to the fall of the worker 1. Can be done. That is, the shock absorbing portion 32A extends the right chest belt 26 by stretching due to the load, and releases the bent state of the right chest belt 26.

As described above, in the harness type safety band 10 of the present embodiment, the right shoulder belt portion 14, the left shoulder belt portion 15, the right thigh belt portion 19, the left thigh belt portion 23, and the right shoulder belt portion 14 are formed. The right chest belt 26 having one end fixed, the left chest belt 27 having one end fixed to the left shoulder belt portion 15, and the right chest belt 26 and the left chest belt 27 are provided on each of the right chest belt 26 and the left chest belt 27 so as to be detachable from each other. A load provided on at least one of the right chest belt 26 and the left chest belt 27 to maintain the chest belt in a short bent state and to pull the chest belt. It has a shock absorbing portion 32A that releases the bent state of the chest belt.

By providing the shock absorbing portion 32A on the chest belt in this way, the impact that a load is applied to the chest belt when dropped can be absorbed by the shock absorbing portion 32A, and the resin connectors 28 and 29 are broken by the impact. Can be prevented. Therefore, it is possible to prevent the gap between the right shoulder belt portion 14 and the left shoulder belt portion 15 from widening due to the breakage of the resin connectors 28 and 29 due to the impact of the drop, and to prevent the gap between the right shoulder belt portion 14 and the left shoulder belt portion 15 from widening. It is possible to prevent the worker from falling out from the interval and improve the safety. Further, it is not necessary to use an expensive metal connecting metal fitting having a large size and weight as a connecting tool for connecting the right chest belt 26 and the left chest belt 27, and the cost can be reduced, and the connecting tool can be downsized. By reducing the weight, the workability of the worker 1 wearing the harness type safety belt 10 can be improved.

Further, in the harness type safety belt 10 of the present embodiment, the shock absorbing portion 32A is preferably a rubber belt having a length shorter than that of the chest belt and having both ends fixed to the chest belt. According to this, the shock absorbing portion 32A can be easily provided on the chest belt.

(Other embodiments)
Although each embodiment of the present invention has been described above, the basic configuration of the present invention is not limited to the above.

For example, in each of the above-described embodiments, the shock absorbing portions 32 and 32A are provided on the right chest belt 26, but the present invention is not particularly limited to this, and the shock absorbing portions 32 and 32A are provided on the left chest belt 27. Alternatively, it may be provided on each of the right chest belt 26 and the left chest belt 27. When the right chest belt 26 and the left chest belt 27 are provided with the shock absorbing portions 32 and 32A, respectively, the same shock absorbing portions 32 and 32A are provided on the right chest belt 26 and the left chest belt 27, respectively. Alternatively, different shock absorbing portions 32 and 32A may be provided. That is, the shock absorbing portions 32 and 32A may be provided on at least one of the right chest belt 26 and the left chest belt 27, and may be provided on both the right chest belt 26 and the left chest belt 27.

Further, the harness type safety belt 10 of the present invention is not limited to the harness type safety belt 10 of each of the above-described embodiments, and is a harness type safety belt having at least left and right shoulder belt portions and left and right chest belt portions. If so, it may have another belt portion, for example, a waist belt portion or the like.

INDUSTRIAL APPLICABILITY The present invention relates to a harness type safety belt, and can be suitably used particularly in the field of safety equipment for preventing a worker from falling.

1 ... worker, 10 ... harness type safety belt, 11, 12 ... belt, 13 ... buckle, 14 ... right shoulder belt, 15 ... left shoulder belt, 16, 17 ... connector, 18 ... ring, 19 ... right thigh Belt part, 20, 21 ... Connecting tool, 22 ... Ring, 23 ... Left thigh belt part, 24 ... Buckle belt, 25 ... Backrest cloth, 26 ... Right chest belt, 27 ... Left chest belt, 28, 29 ... Resin Coupling tool, 30, 31 ... Ring, 32, 32A ... Shock absorber, 33 ... D ring, 100 ... Lanyard

Claims (4)

A buckle with a D ring to which the lanyard is connected,
The left shoulder belt portion formed in an annular shape by the first belt above the buckle and the second belt below the buckle, and
A right shoulder belt portion formed in an annular shape by the second belt above the buckle and the first belt below the buckle.
The left thigh formed in an annular shape by connecting one end of the first belt and one end of the second belt below the portion where the first belt and the second belt are sewn to each other. With the belt part
Below the portion where the first belt and the second belt are sewn to each other, the other end of the first belt and the other end of the second belt are connected to form an annular shape. Right thigh belt and
The right chest belt with one end fixed to the right shoulder belt,
The left chest belt with one end fixed to the left shoulder belt,
A resin connector provided on each of the right chest belt and the left chest belt and detachably attached to each other,
Equipped with
Impact absorption provided on at least one of the right chest belt and the left chest belt to keep the chest belt in a short bent state and to release the bent state by a load that pulls the chest belt. Harness type safety belt characterized by having a part. The harness-type safety belt according to claim 1, wherein the shock absorbing portion is formed by folding back the chest belt and sewing it in layers. The harness-type safety belt according to claim 1 or 2, wherein the shock absorbing portion is a rubber band having a length shorter than that of the chest belt and having both ends fixed to the chest belt. One of claims 1 to 3, wherein the shock absorbing portion releases the bent state of the chest belt with a load smaller than the breaking strength of the resin connector and extends the chest belt. Harness type safety belt described in the section.

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