Fall prevention equipment

Abstract

To provide a fall arrest device that allows for easy attachment and detachment of work positioning equipment and offers superior comfort. [Solution] The fall arrest device 2 comprises a full harness 4 having a pair of shoulder belts 8 and a pair of thigh belts 10, a suspension belt 18 connected to the full harness 4 and located in the left-right center behind the full harness 4, a backside belt 22 that supports the wearer's buttocks, a waist belt 20 from which the backside belt 22 is suspended, and a suspension belt 30 connected to the waist belt 20 at the center of the backside belt 22 in the left-right direction and detachably connected to the suspension belt 18.

Description

Technical Field

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[0001] This specification discloses a fall arrest device.

Background Art

[0002] Japanese Unexamined Patent Application Publication No. 2021-104139 discloses a fall arrest device used for work on an inclined surface. In work on an inclined surface, a work positioning device that supports the wearer's hips is used. This fall arrest device connects the work positioning device to a full harness using a connector. This connector connects the work positioning device to the full harness in a separable manner. With this connector, the fall arrest device can be used as a fall arrest device with the work positioning device separated during high-altitude work, and as a fall arrest device with the work positioning device connected during work on an inclined surface.

[0003] The work positioning device has a body belt, a backside belt that is applied to the wearer's hips, and a suspension belt that connects the left and right ends of the backside belt to the body belt. This suspension belt is connected to the body belt on the left and right sides of the wearer. The aforementioned connector connects the suspension belt to the full harness on the left and right sides of the wearer where the suspension belt is connected.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] When working on inclined surfaces, tools and materials such as chisels, pliers, compensators, stakes, and binding wire are used. These tools and materials are stored in pliers holders or tool bags. The pliers holders and tool bags are suspended from the waist belt of the work positioning device. The load of the tools and materials is borne by the waist belt. This load can cause the waist belt to sag downwards or the edges of the waist belt to curl. This sagging and curling impairs the wearer's comfort.

[0006] The applicant's intention is to provide a fall arrest device that allows for the attachment and detachment of work positioning equipment and offers superior comfort when worn. [Means for solving the problem]

[0007] The fall arrest equipment disclosed herein is A full harness having a pair of shoulder straps and a pair of thigh straps. A suspension belt connected to the full harness and located in the left-right center at the back of the full harness, Backside belt that supports the wearer's buttocks, The waist belt from which the aforementioned backside belt is suspended, And, A suspension belt that is connected to the waist belt at the center of the backside belt in the left-right direction and is detachably connected to the suspension belt. It is equipped with. [Effects of the Invention]

[0008] In this fall protection system, the suspension belts are detachably connected at the center of the rear of the full harness. The fall protection system prevents the waist belt from sagging downwards or its edges from curling up due to the load of tools, etc. This fall protection system allows for the attachment and detachment of work positioning equipment and offers superior comfort. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a rear view showing a fall arrest device according to one embodiment. [Figure 2] Figure 2A is a magnified view of a portion of the belt attachment and body belt of the fall protection equipment shown in Figure 1, and Figure 2B is a cross-sectional view along the line segment IIB-IIB in Figure 2A. [Figure 3] Figure 3 is a partial cross-sectional view along the line segment III-III in Figure 1. [Figure 4] Figure 4 is a partial cross-sectional view along the line segment IV-IV in Figure 1. [Figure 5] Figure 5 is an explanatory diagram showing other uses of the buckle on the fall arrest device shown in Figure 1. [Figure 6] Figure 6A is a cross-sectional view along the line segment VIA-VIA in Figure 5, and Figure 6B is a front view seen in the direction of arrow VIB in Figure 6A. [Modes for carrying out the invention]

[0010] Preferred embodiments will be described in detail below, with reference to drawings as appropriate.

[0011] Figure 1 shows the fall protection equipment 2 as viewed from the rear. The fall protection equipment 2 comprises a full harness 4 and a work positioning device 6 connected to the full harness 4.

[0012] The full harness 4 has a pair of shoulder straps 8 and a pair of thigh straps 10. The full harness 4 has an intersection 8A where the pair of shoulder straps 8 cross behind the wearer. The full harness 4 has a D-ring stopper 12 and a D-ring 14 located at the intersection 8A. The D-ring stopper 12 has multiple openings. The pair of shoulder straps 8 are passed through these multiple openings, as if sewing through the D-ring stopper 12. The D-ring stopper 12 is connected to the pair of shoulder straps 8. The D-ring 14 has an opening through which the intersection 8A of the pair of shoulder straps 8 is passed. The D-ring 14 is sandwiched between the D-ring stopper 12 and the pair of shoulder straps 8. The D-ring 14 is connected to the pair of shoulder straps 8.

[0013] The fall arrest device 2 includes a connecting ring 16 located at the intersection 8A of a pair of shoulder belts 8. The connecting ring 16 has an opening. A pair of shoulder belts 8 are passed through the opening of the connecting ring 16. The connecting ring 16 is sandwiched between the D-ring stopper 12 and the pair of shoulder belts 8. The connecting ring 16 is connected to the pair of shoulder belts 8.

[0014] The fall arrest device 2 includes a suspension belt 18 located at the center in the left-right direction behind the full harness 4. The suspension belt 18 is connected to the connecting ring 16. The suspension belt 18 extends downward from the connecting ring 16. The suspension belt 18 is connected to the full harness 4 via the connecting ring 16.

[0015] The work positioning device 6 has a body belt 20 fastened to the body of the wearer and a backside belt 22 that supports the buttocks of the wearer. The work positioning device 6 has a pair of side suspension belts 24 that connect the backside belt 22 to the body belt 20.

[0016] The pair of side suspension belts 24 connect the left and right direction ends of the backside belt 22 to the body belt 20. The pair of side suspension belts 24 suspend the backside belt 22 from the body belt 20. The lower end portions of the side suspension belts 24 are sewn to the left and right direction ends of the backside belt 22. Each side suspension belt 24 has a belt passage ring 24A at the upper end portion. The body belt 20 is passed through the belt passage ring 24A of the side suspension belt 24.

[0017] The work positioning device 6 has a band 26 that is located at the central position of the backside belt 22 in the left-right direction. The band 26 has one end in the longitudinal direction attached to the backside belt 22 at the center in the left-right direction of the backside belt 22. The band 26 extends vertically. The other end of the band 26 in the longitudinal direction is folded upward and extends downward. The band 26 is located between the body belt 20 and the backside belt 22. The work positioning device 6 further has a band fastener 28 attached to the band 26. The band fastener 28 is attached to one end of the band 26 and fastens the other end. The band fastener 28 is detachable from the other end of the band 26. The band fastener 28 can change the fastening position. By changing this fastening position, the band fastener 28 can adjust the length of the band 26 between the body belt 20 and the backside belt 22.

[0018] The fall arrest device 2 includes a suspension belt 30 that is located at the central position of the backside belt 22 in the left-right direction. The suspension belt 30 extends in the vertical direction. The lower end of the suspension belt 30 is connected to the body belt 20. The lower end of the suspension belt 30 and the band 26 are located at the same position in the longitudinal direction of the body belt 20. The lower end of the suspension belt 30 overlaps the band 26 in the front-rear direction at the position of the body belt 20.

[0019] The fall arrest device 2 includes a buckle 32 having a buckle body 32A connected to the suspension belt 30 and a tongue plate 32B connected to the suspension belt 18. The buckle body 32A and the tongue plate 32B are detachable. It should be noted that the buckle body 32A may be connected to the suspension belt 18 and the tongue plate 32B may be connected to the suspension belt 30.

[0020] The fall arrest device 2 further includes a belt fixture 34 attached to the body belt 20 at a position where the lower end of the suspension belt 30 and the band 26 overlap in the front-rear direction.

[0021] As shown in Figure 2A, the belt attachment 34 has a pair of belt loops 34A and an attachment belt 34B that connects the pair of belt loops 34A. Figure 2B shows a cross-section along the line segment IIB-IIB in Figure 2A.

[0022] As shown in Figure 2B, each belt loop 34A has a through hole 34C and a through hole 34D. Through holes 34C and 34D are located overlapping in the front-to-back direction in Figure 1. Through hole 34C has an opening shape that conforms to the cross-sectional shape of the mounting belt 34B. Through hole 34D has an opening shape that conforms to the cross-sectional shape of the body belt 20.

[0023] As shown in Figure 2B, the mounting belt 34B has a main portion 34E and a pair of folded portions 34F. The main portion 34E and the pair of folded portions 34F are overlapped and sewn together. The folded portions 34F are passed through holes 34C. The mounting belt 34B connects a pair of belt loops 34A. The waist belt 20 is passed through the holes 34D of each belt loop 34A. The belt attachment 34 is attached to the waist belt 20. The mounting belt 34B extends along the longitudinal direction of the waist belt 20. Alternatively, the mounting belt 34B may be passed through hole 34D and the waist belt 20 through hole 34C. Also, instead of holes 34C and 34D, the belt loop 34A may have a single through hole through which the mounting belt 34B and waist belt 20 are passed.

[0024] Figure 3 shows a cross-section along the line segment III-III in Figure 1. The suspension belt 30 is constructed by overlapping and sewing together a main portion 30A, an upper folded portion 30B, and a lower folded portion 30C. The folded portion 30B is passed through the through-hole 32C of the buckle body 32A. The buckle body 32A is attached to the suspension belt 30. The suspension belt 30 has a first belt pass-through ring 30D formed between the main portion 30A and the folded portion 30C. The waist belt 20 is passed through the first belt pass-through ring 30D.

[0025] The band 26 has a main portion 26A that extends vertically and a folded portion 26B that is folded back at the top and extends downward. The band 26 has a second belt loop 26C formed between the main portion 26A and the folded portion 26B. The attachment belt 34B is passed through the second belt loop 26C. In this fall arrest device 2, as shown in Figure 1, a band fastener 28 secures the folded portion 26B.

[0026] Figure 4 shows a cross-section along the line segment IV-IV in Figure 1. In the left-right direction, the suspension belt 30 and the band 26 are located between a pair of belt loops 34A. In the front-back direction, the suspension belt 30 and the band 26 overlap. The suspension belt 30 and the band 26 are directly or indirectly connected to the body belt 20 at the rear center in the left-right direction.

[0027] Figure 5 shows the buckle 32 in use with the connection between the buckle body 32A and the tongue plate 32B released. The tongue plate 32B has been removed from the buckle body 32A. The buckle 32 has a release lever 32D attached to the buckle body 32A. In the connected state shown in Figure 1, the buckle 32 is released as shown in Figure 5 by operating the release lever 32D.

[0028] As shown in Figure 5, the fall arrest device 2 includes a retainer 36 attached to the suspension belt 18. Figure 6A shows a cross-section along the line segment VIA-VIA in Figure 5. Figure 6B shows the view in the direction of arrow VIB in Figure 6A.

[0029] As shown in Figure 6A, the retainer 36 has a through-hole 36A through which the main portion 18A of the suspension belt 18 passes. The retainer 36 has a pair of claws 36B that can lock onto the shoulder belt 8. In Figure 6A, the shoulder belt 8 locked onto the pair of claws 36B is shown by a dashed line. The retainer 36 is detachably attached to the shoulder belt 8 that extends diagonally downward from the intersection 8A shown in Figure 1. Alternatively, the retainer 36 may be attached to the full harness 4 (shoulder belt 8) and the suspension belt 18 may be detachably attached.

[0030] As shown in Figure 1, the fall protection device 2 includes a suspension belt 18 connected to the full harness 4, and a suspension belt 30 connected to the waist belt 20 and detachably connected to the suspension belt 18. The work positioning device 6 is detachably attached to the full harness 4 in this fall protection device 2.

[0031] The suspension belt 18 is located in the left-right center at the back of the full harness 4, and the suspension belt 30 is connected to the waist belt 20 at the center of the backside belt 22 in the left-right direction. This fall arrest device 2 prevents the waist belt 20 from bending downward or the edges of the waist belt 20 from curling up due to the load of tools and materials stored in the pliers holder and tool bag. This fall arrest device 2 minimizes any loss of comfort for the wearer. This fall arrest device 2 offers superior comfort.

[0032] As shown in Figure 5, the fall arrest device 2 includes a buckle 32 having a buckle body 32A and a tongue plate 32B. With this fall arrest device 2, the work positioning device 6 can be attached to and detached from the full harness 4 securely and easily. The buckle 32 is equipped with a release lever 32D for releasing the connection between the buckle body 32A and the tongue plate 32B, making the release of the connection even easier.

[0033] As shown in Figure 1, the fall arrest device 2 includes a band 26 that connects the backside belt 22 and the body belt 20 at the center of the backside belt 22 in the left-right direction. This fall arrest device 2 allows the position of the backside belt 22 to be easily adjusted to the position of the wearer's buttocks. Meanwhile, the suspension belt 30 and the band 26 are directly or indirectly connected to the body belt 20 at a position where they overlap the body belt 20 in the front-rear direction. The fall arrest device 2 facilitates the support of the wearer's buttocks with the backside belt 22, while suppressing downward bending of the body belt 20 or curling of the edges of the body belt 20 due to the load of tools and materials.

[0034] The fall arrest device 2 includes a belt attachment 34 that is attached to the body belt 20. As shown in Figure 3, the suspension belt 30 has a first belt pass-through ring 30D. The band 26 has a second belt pass-through ring 26C. The body belt 20 is passed through either the first belt pass-through ring 30D or the second belt pass-through ring 26C, and the attachment belt 34B of the belt attachment 34 is passed through the other. This belt attachment 34 can connect the suspension belt 30 and the band 26 to the body belt 20 in a position where they overlap in the front-rear direction. In addition, in this fall arrest device 2, the pass-through hole 34D of the belt attachment 34 has an opening shape that conforms to the cross-sectional shape of the body belt 20. By including the belt attachment 34, the fall arrest device 2 can further suppress bending and curling of the body belt 20.

[0035] In the fall arrest device 2, the waist belt 20 is passed through a pair of belt loops 34A of the belt attachment 34. The waist belt 20 is passed through the first belt loop 30D of the suspension belt 30. The belt attachment 34 and the suspension belt 30 are detachable from the waist belt 20. The attachment belt 34B is passed through the second belt loop 26C of the band 26. The band 26 is detachable from the attachment belt 34B. By using the belt attachment 34 with other conventional work positioning devices, other conventional work positioning devices can be detachably connected to the full harness 4. In addition, in the fall arrest device 2, the attachment belt 34B may be passed through the first belt loop 30D of the suspension belt 30, and the waist belt 20 may be passed through the second belt loop 26C of the band 26.

[0036] As shown in Figures 1 and 6, the fall protection device 2 includes a holder 36 that detachably holds the suspension belt 18 to the full harness 4. When the work positioning device 6 is removed from the full harness 4, the suspension belt 18 can be temporarily fastened to the full harness 4.

[0037] [Disclosure items] Each of the following items discloses a preferred embodiment.

[0038] [Item 1] A full harness having a pair of shoulder straps and a pair of thigh straps. A suspension belt connected to the full harness and located in the left-right center at the back of the full harness, Backside belt that supports the wearer's buttocks, The waist belt from which the aforementioned backside belt is suspended, And, A suspension belt that is connected to the waist belt at the center of the backside belt in the left-right direction and is detachably connected to the suspension belt. Fall arrest equipment equipped with [specific features / features].

[0039] [Item 2] The buckle comprises a buckle body and a tongue plate connected to the buckle body, The fall arrest device according to item 1, wherein one of the buckle body or the tongue plate is attached to the suspension belt and the other is attached to the suspension belt.

[0040] [Item 3] The back side belt is provided with a band that connects the back side belt and the waist belt at the center in the left-right direction of the back side belt, The fall arrest device according to item 1 or 2, wherein the suspension belt and the band are connected to the waist belt at a position where they overlap in the front-to-back direction of the full harness.

[0041] [Item 4] The aforementioned suspension belt has a first belt loop, The band has a second belt loop, A belt attachment device comprising a pair of belt loops and an attachment belt extending between the pair of belt loops, The fall arrest device according to item 3, wherein the waist belt is passed through the pair of belt loops, and the waist belt is passed through one of the first belt loop ring or the second belt loop ring between the pair of belt loops, and the attachment belt is passed through the other.

[0042] [Item 5] A fall arrest device according to any one of items 1 to 4, comprising a retaining device for detachably holding the suspension belt to the full harness. [Industrial applicability]

[0043] The fall arrest equipment described above is suitable for use in work on slopes and other inclined surfaces. [Explanation of symbols]

[0044] 2... Fall arrest equipment 4. Full harness 8. Shoulder straps 10. Thigh belt 18. Suspension belt 20...waist belt 22. Backside belt 26 bands 26C...Second belt loop 30... Lifting belt 30D...First belt loop 32. Buckle 32A...Buckle body 32B...Tang Plate 34. Belt attachment 34A... Belt loop 34B... Mounting belt 36...Holder

Claims

1. A full harness having a pair of shoulder straps and a pair of thigh straps. A suspension belt connected to the full harness and located in the left-right center at the back of the full harness, Backside belt that supports the wearer's buttocks, The waist belt from which the aforementioned backside belt is suspended, And, A suspension belt that is connected to the waist belt at the center of the backside belt in the left-right direction and is detachably connected to the suspension belt. Fall arrest equipment equipped with [specific features / features].

2. The buckle comprises a buckle body and a tongue plate connected to the buckle body, The fall arrest device according to claim 1, wherein one of the buckle body or the tongue plate is attached to the suspension belt and the other is attached to the suspension belt.

3. The back side belt is provided with a band that connects the back side belt and the waist belt at the center in the left-right direction of the back side belt, The fall arrest device according to claim 1 or 2, wherein the suspension belt and the band are connected to the waist belt at a position where they overlap in the front-to-back direction of the full harness.

4. The aforementioned suspension belt has a first belt loop, The band has a second belt loop, A belt attachment device comprising a pair of belt loops and an attachment belt extending between the pair of belt loops, The fall arrest device according to claim 3, wherein the waist belt is passed through the pair of belt loops, and the waist belt is passed through one of the first belt loop ring or the second belt loop ring between the pair of belt loops, and the attachment belt is passed through the other.

5. The fall arrest device according to claim 1 or 2, comprising a retaining device attached to the full harness or the suspension belt, which detachably holds the suspension belt to the full harness.

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