Knapsack for high altitude work

Abstract

To provide a knapsack for high altitude work which has a wide storage space, is easy to put articles in / out of, and is capable of connecting a lanyard to a D ring without problems even with a full harness type fall-arrest implement attached.SOLUTION: A knapsack 1 for high altitude work includes: a U-shaped body 2 composed of an elongated bad body; a pair of shoulder belts 3, 3 which have buckles 6 and in which both ends are sewn on a back surface side of a side surface 2a in parallel to straight parts from an end 2b of the body 2 to a central part of the U-shape; and a pair of connecting belts 4, 5 which are installed on a back surface side and a front surface side of the side surface 2a orthogonally to a longitudinal direction and coupling the straight parts of the U-shape. There are provided a pair of second openings installed on the side surface 2a of the body 2 orthogonally to the longitudinal direction. To end edge of the first opening provided in parallel to the longitudinal direction, a second slide fastener 8 and a first slide fastener 9 respectively provided with second operation pieces 8a and a first operation piece 9a are sewn.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a rucksack for high-altitude work used when removing a bird's nest or the like built on a steel tower. In particular, the present invention relates to a rucksack for high-altitude work that can connect a lanyard to a D-ring without any trouble even when used while wearing a full-harness type fall arrest device that is mandatory during high-altitude work.

Background Art

[0002] A fall arrest device is used in high-altitude work. When the height of the work location exceeds 2 m, the use of a full-harness type fall arrest device is generally mandatory. Here, the full-harness type fall arrest device will be described with reference to FIG. 5. FIG. 5 is a rear view of a user 50 wearing a full-harness type fall arrest device 51. As shown in FIG. 5, the full-harness type fall arrest device 51 includes a body belt 52 located at the waist portion of the user 50, a crotch belt 53 that supports the legs of the user 50 during a fall, shoulder belts 54 respectively looped over both shoulders, and a key lock body 55. At the portion where the shoulder belts 54 cross on the back of the user 50, a D-ring 56 for hooking a hook of a lanyard (not shown) is installed.

[0003] In the work of removing a bird's nest, a bag for storing the bird's nest is required. Since both hands can be used freely, a backpack such as a rucksack is often used. However, when carrying a rucksack while wearing the full-harness type fall arrest device 51, there is a problem that the D-ring 56 installed on the back of the user 50 is covered by the rucksack, making it difficult to connect the lanyard to the D-ring 56.

[0004] Regarding a backpack that can be used while wearing a full harness type fall arrest device, for example, Patent Document 1 discloses an invention related to a backpack and a method of wearing the backpack that does not inhibit the function of a key lock type full harness type fall arrest device, under the name of "Backpack and Method of Wearing a Backpack". Explaining with reference to the reference numerals shown in the drawings of Patent Document 1, Patent Document 1 describes a backpack 1 having a mounting body 10 mounted on the body part of the user, and a bag body 31 in which a lid body 35 is installed on the upper part of a bag body main body 2 having an opening that can be freely opened and closed by a fastener 33h, and including a storage member 30 connected to the mounting body 10. FIG. 5 shows a state in which the storage member 30 is attached to the user's waist so as not to cover the central part of the user's back when wearing a full harness 100. According to such a backpack and its wearing method, since the D-ring installed on the user's back is not covered by the backpack, it is possible to connect the lanyard to the D-ring.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the invention disclosed in Patent Document 1, since the storage member 30 is structured to be attached to the user's waist, compared with a backpack, the space for storing items is narrow, and there is also a problem that it may restrict the user's movement and interfere with work. Furthermore, the operation of opening and closing the lid body 35 by operating the fastener 33h is not easy, and there is also a problem that it takes time to take out items from the storage body 30 or put items into the storage body 30.

[0007] The present invention has been made to address such conventional circumstances, and not only has a large space for accommodating objects, but also the operations of putting objects in and taking them out are easy, and even when used while wearing a full harness type fall arrest device that is obligatory during high-altitude work, it is possible to connect the lanyard to the D-ring without any trouble. The object is to provide a rucksack for high-altitude work.

Means for Solving the Problems

[0008] In order to achieve the above object, a rucksack for high-altitude work according to a first invention is composed of an elongated bag-shaped body, a main body forming a U-shape, and a pair of backpack belts whose both ends are respectively fixed to the back side of the side surface so as to be parallel to the straight part of the U-shape from the end of this main body toward the central part of the U-shape, a first slide fastener provided at the edge of a first opening provided on the side surface of the main body in parallel with the longitudinal direction, and a first operating piece for operating this first slide fastener to open and close the first opening. It is characterized by comprising these. In the first invention, the back side refers to the side where the main body comes into contact with the user when the user wears the main body. Also, the "main body forming a U-shape" in the first invention includes a "main body forming a substantially U-shape", and the "backpack belt parallel to the straight part of the U-shape" includes a "backpack belt substantially parallel to the straight part of the U-shape".

[0009] In the first invention having the above structure, when the user wears the main body while wearing a full harness type fall arrest device, there is an effect that the D-ring for hooking the lanyard is arranged between two parts corresponding to the straight part of the U-shape of the main body. Also, in the first invention, as long as the place where the backpack belt is installed is avoided, for example, it is also possible to form the first opening quite large so as to reach from near one end to near the other end. And in the first invention, when the first opening is formed large on the side surface of the main body, an effect that it becomes easy to put objects in and take them out of the main body is exhibited.

[0010] The second invention is characterized in that, in the first invention, the main body has flexibility and is bent at the longitudinal center so as to form a U shape. In the second invention, when the main body is bent so as to form a U shape, the case where the main body is bent so as to form a substantially U shape is also included. In the second invention, in addition to the action of the first invention, when the user is carrying it, the main body forms a U shape, but when the user is not carrying it, the main body has the action of easily deforming.

[0011] The third invention is characterized in that, in the second invention, it has a buckle composed of a male member and a female member that are detachably connected, and includes a connecting belt that connects the straight portions of the U shape so as to be orthogonal to the longitudinal direction. The connecting belt is constituted by a first belt and a second belt whose base ends are respectively fixed to the side surfaces of the main body and whose tip ends are respectively provided with a male member and a female member. In the third invention, in addition to the action of the second invention, if the male member and the female member of the connecting belt are connected, the connecting belt has the action of maintaining the U shape of the main body. Further, when the connection state between the male member and the female member of the connecting belt is released, the main body can be deformed.

[0012] The fourth invention is characterized in that, in the third invention, the connecting belt is provided on the back side and the front side of the side surface of the main body so as to be paired, and the first opening is provided at a position sandwiched between the pair of connecting belts. In the fourth invention, the front side refers to the side where the main body does not contact the user when the user carries the main body. In the fourth invention having the above structure, since a pair of connecting belts are provided, the action of the third invention of maintaining the U shape of the main body by the connecting belt is further exerted.

[0013] The fifth invention is as follows: In the third invention, the body has its ends closed, and on the side surface, a second opening is provided at a position closer to the end than the connecting belt so as to be orthogonal to the longitudinal direction. The fifth invention is characterized by including a second slide fastener provided at the edge of the second opening, and a second operating piece for operating the second slide fastener to open and close the second opening. In the fifth invention, in addition to the operation of the third invention, when the second operating piece is operated to open the second opening, the article can be taken in and out from the end side with respect to the body.

[0014] The sixth invention is as follows: In the second invention, the backpack belt has a buckle composed of a male member and a female member that are detachably connected. The proximal ends are respectively fixed to the side surface of the body, and the sixth invention is characterized by being composed of a first belt and a second belt provided with the male member and the female member at the distal ends respectively. In the sixth invention, in addition to having the operation of the second invention, when the connection state between the male member and the female member is released and the first belt and the second belt are separated, it has the effect that the work of fixing the body to the rod-shaped member using the backpack belt becomes easy.

Effects of the Invention

[0015] According to the first invention, even when the body is carried on the back with a full-harness type fall arrest device worn, the body does not get in the way when connecting the lanyard to the D-ring, and the lanyard can be surely connected to the D-ring. Therefore, the safety during high-altitude work is ensured. In addition, since the main body has a backpack structure and the space for storing items is larger compared to the invention disclosed in Patent Document 1, in the first invention, it is possible to store a large number of items. Also, when carrying the main body on the back, both hands become free, and there is no risk of restricting the user's movements as in the invention disclosed in Patent Document 1, so work at heights can be carried out safely. Furthermore, by forming the first opening large, it becomes easy to put items into and take them out of the main body. Therefore, according to the first invention, it is possible to easily carry out the work of storing large items such as bird nests in the main body or taking them out of the main body. Thus, according to the first invention, the work of removing bird nests and the like can be carried out efficiently in a short time.

[0016] If the main body is in a straight state, compared to the case where the main body forms a U shape, the work of storing items in the main body or taking them out of the main body through the first opening is easier. In that regard, in the second invention, since the main body has flexibility, it can be easily deformed from a U-shaped state to a straight state. That is, according to the second invention, in addition to the effects of the first invention, by making the main body straight, the time required for putting items into and taking them out of the main body is shortened.

[0017] In the third invention, even when the user is not carrying the main body, as long as the connection state between the male member and the female member of the connecting belt is not released, the U-shaped state of the main body is maintained. Therefore, there is no risk of unnecessary space being required during storage or the main body being bulky when carried due to accidental deformation of the main body. Thus, according to the third invention, in addition to the effects of the second invention, it has the effect of being easy to store and carry.

[0018] According to the fourth invention provided with a pair of connecting belts, since the U-shaped state is maintained more reliably than in the case of the third invention, the effect of the third invention, which is easy to store and carry, is further enhanced.

[0019] According to the fifth invention, in addition to the effects of the third invention, there is an effect that even an elongated member that is difficult to be accommodated in the main body through the first opening can be accommodated in the main body through the second opening. Also, for a member longer than the main body, by opening the second opening and making one end protrude from the second opening, it becomes possible to store it in the main body. That is, in the fifth invention, a member longer than the main body can be stored.

[0020] In the sixth invention, since it is possible to fix the main body to a rod-shaped member using a shoulder belt, for example, when removing a bird's nest made on a steel tower, the straight main body can be fixed to the cross-arm of the steel tower using the shoulder belt. By doing so, the work of putting the removed bird's nest into the main body through the first opening becomes extremely easy. That is, according to the sixth invention, in addition to the effects of the second invention, there is an effect that the work of accommodating the removed bird's nest in the main body on the steel tower can be performed extremely easily.

Brief Description of the Drawings

[0021]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0022] The structure, operation, and effects of the backpack for high-altitude work according to the embodiments of the present invention will be specifically described with reference to FIGS. 1 to 4.

Example

[0023] FIGS. 1(a) and 1(b) are respectively a front view and a rear view of the backpack 1 for high-altitude work according to the embodiments of the present invention. FIGS. 2(a) and 2(b) are front views of the buckle 6, and FIG. 2(c) is a view showing a state in which the lid 7 installed at the end 2b of the main body 2 in FIG. 1(b) is opened. In the present invention, the side where the main body 2 does not contact the user's back and the side that contacts the user's back are referred to as the front and the rear, respectively. As shown in FIGS. 1(a) and 1(b), the backpack 1 for high-altitude work of the present invention is composed of an elongated bag-like body, and a main body 2 that is bent at the central portion in the longitudinal direction to form a U-shape, having buckles 6, and a pair of shoulder straps 3, 3 whose both ends are respectively adhered to the back side of the side surface 2a so as to be parallel to the straight portion of the U-shape from the end 2b of the main body 2 toward the central portion of the U-shape, having buckles 6, and a pair of connecting belts 4, 5 that are respectively installed on the back side and the front side of the side surface 2a so as to be orthogonal to the longitudinal direction and connect the straight portions of the U-shape. Further, the main body 2 is formed of chemical fibers such as nylon and polyester, and has flexibility. And a pair of connecting belts 4, 5 have a function of maintaining the state of the main body 2 bent in a U-shape by sewing both ends to the side surface 2a so that the portions from the end 2b can be connected to each other. Note that the main body 2 may be substantially U-shaped, and the pair of shoulder straps 3, 3 may be substantially parallel to the straight portion of the U-shape. Further, when the material of the main body 2 cannot sew both ends of the shoulder strap 3, both ends of the shoulder strap 3 may be fixed to the main body 2 by a method other than adhesion.

[0024] On the side surface 2a of the main body 2, a pair of second openings 2c, 2c (see FIG. 2(c) described later) are respectively provided at positions closer to the end 2b than the pair of connecting belts 4, 5 so as to be orthogonal to the longitudinal direction of the main body 2. Further, at a position sandwiched between the pair of connecting belts 4, 5 on the side surface 2a, a first opening 2d (see FIGS. 3(a) and 3(b) described later) is provided parallel to the longitudinal direction. Second slide fasteners 8 and first slide fasteners 9 each having a second operating piece 8a and a first operating piece 9a are sewn to the edges of the second opening 2c and the first opening 2d, respectively. The main body 2 is divided into two parts: a part where the carrying belt 3 and the connecting belts 4, 5 are provided and a part where they are not provided, with the second slide fastener 8 as the boundary. Among them, the part where the carrying belt 3 and the connecting belts 4, 5 are not provided functions as a lid body 7 that closes the second opening 2c. Further, second openings 2c, 2c are respectively provided at both ends of the main body 2. However, the main body 2 is not limited to this, and a structure in which the second opening 2c is provided at one of the ends 2b may be sufficient. Furthermore, the main body 2 can also have a structure with both ends open. And when the material of the main body 2 is such that the both ends of the pair of connecting belts 4, 5 cannot be sewn, the both ends of the pair of connecting belts 4, 5 may be fixed to the main body 2 by a method other than sewing.

[0025] The carrying belt 3 and the connecting belts 4, 5 are each composed of a first belt portion 12 and a second belt portion 13 to which a male member 10 and a female member 11 of the buckle 6 are respectively attached at the tips 12a, 13a as shown in FIG. 2(a). The proximal ends of the first belt portion 12 and the second belt portion 13 are respectively sewn to the side surface 2a of the main body 2. On the tip side of the male member 10, a pair of protrusions 10a, 10a are formed to be elastically deformable in a direction of narrowing the distance between them. On the base end side of the male member 10, a length adjustment mechanism 14 having a belt insertion hole 14a is provided. On the other hand, inside the female member 11, an engagement hole (not shown) into which the pair of protrusions 10a, 10a of the male member 10 are inserted is formed to open forward. On the side surface of the female member 11, a pair of side openings 11a, 11a are formed so that the side surfaces of the pair of protrusions 10a, 10a protrude when engaged with the male member 10.

[0026] After elastically deforming the pair of protrusions 10a, 10a of the male member 10 in a direction of narrowing the distance between them and inserting them into the engagement hole of the female member 11, when the above deformation is restored so that the side surfaces of the pair of protrusions 10a, 10a protrude from the side openings 11a, 11a of the female member 11 as shown in Fig. 2(b), the male member 10 engages with the female member 11, and thus the male member 10 cannot be pulled out from the female member 11. That is, the buckle 6 has a structure in which the male member 10 is connected by engaging with the female member 11. When the side surfaces of the pair of protrusions 10a, 10a protruding from the pair of side openings of the female member 11 are pushed into the female member 11, the engaged state between the male member 10 and the female member 11 is easily released.

[0027] Fig. 3(a) is an external view of the main body 2 deformed into a straight state, and Fig. 3(b) is a view showing a state in which the main body 2 is fixed to the cross-arm 57 of the iron tower using a pair of backpack belts 3, 3. In Fig. 3(a) and Fig. 3(b), the connection belts 4, 5 are not shown. Also, for the components already described with reference to Fig. 1 and Fig. 2, the same reference numerals are used and the description thereof is omitted as appropriate. In the high-altitude work backpack 1, as long as the positions where the pair of shoulder belts 3, 3 are installed are avoided, as shown in Fig. 3(a), the first opening 2d can be formed quite large from near one end 2b to near the other end 2b. In this case, when the first operating piece 9a is operated to open the first opening 2d, it is easier to put things in and out of the main body 2 than when using the second opening 2c. That is, by using the first opening 2d, it is possible to easily perform the work of accommodating large objects like a bird's nest in the main body 2 or taking them out from the main body 2. Therefore, by using the high-altitude work backpack 1, the work of removing a bird's nest or the like can be efficiently carried out in a short time.

[0028] As shown in Fig. 3(a), when the main body 2 is in a straight state, it is easier to put things into the main body 2 or take things out from the main body 2 through the first opening 2d than when the main body 2 forms a U shape. Therefore, the time required for putting things in and out of the main body 2 is shortened. Also, in the high-altitude work backpack 1, when the connection state between the male member 10 and the female member 11 is released and the first belt portion 12 and the second belt portion 13 are separated, the main body 2 can be easily fixed to a rod-shaped member using the shoulder belt 3. For example, when removing a bird's nest made on a steel tower, as shown in Fig. 3(b), when the main body 2 is in a straight state and fixed to the cross-arm 57 of the steel tower using the pair of shoulder belts 3, 3, the work of accommodating the removed bird's nest in the main body 2 on the steel tower can be extremely easily performed.

[0029] Fig. 4 is a rear view of a user 50 wearing the high-altitude work backpack 1 with a full-harness type fall arrest device 51. For the components that have already been described with reference to Figs. 1 to 3 and Fig. 5, the description thereof will be appropriately omitted by attaching the same reference numerals. In the high-place work backpack 1, the main body 2 has a structure of a backpack, and since the space for storing items is larger compared to the structure of the invention disclosed in Patent Document 1, a large number of items can be stored. Also, as shown in FIG. 4, when the main body 2 is carried on the back, both hands become free, and there is no risk of restricting the user's movement as in the invention disclosed in Patent Document 1. Therefore, by using the high-place work backpack 1, it is possible to safely perform high-place work.

[0030] When inserting and removing an elongated member into and from an elongated bag, if the tip is inserted into the bag or the base end is pulled out from the bag by inserting or pulling from the end of the bag rather than from the side of the bag, the end of the member is less likely to interfere with the inner surface of the bag, making the operation of inserting and removing the member into and from the bag easier. In that regard, in the case of the high-place work backpack 1, by operating the second operation piece 8a to open the second opening 2c, it becomes possible to store an item into the main body 2 from the end 2b or take out an item stored in the main body 2 from the end 2b.

[0031] That is, the high-place work backpack 1 is not only easy to take in and out large items like a bird's nest by using the first opening 2d as described above, but also easy to take in and out elongated items by using the second opening 2c. Furthermore, when storing a member longer than the main body 2 in the high-place work backpack 1, at least one of the pair of second openings 2c, 2c is opened, and one end or both ends of the member are protruded from the second opening 2c, enabling storage.

[0032] As shown in Fig. 4, when the user 50 wears the full-harness type fall arrest device 51 and carries the main body 2 of the high-altitude work rucksack 1 on the back, the D-ring 56 for hooking the lanyard is arranged between two parts corresponding to the U-shaped straight part of the main body 2. That is, in the high-altitude work rucksack 1, even when the main body 2 is carried on the back with the full-harness type fall arrest device 51 worn, the main body 2 does not get in the way when connecting the lanyard to the D-ring 56, and the lanyard can be surely connected to the D-ring 56, so the safety during high-altitude work is ensured.

[0033] Since the main body 2 of the high-altitude work rucksack 1 has flexibility, it can be easily deformed. However, even when the user 50 is not carrying the main body 2, the U-shaped state of the main body 2 is maintained unless the connection state between the male member 10 and the female member 11 of the connecting belts 4 and 5 is released. Therefore, there is no risk that unnecessary space is required during storage or the main body 2 becomes bulky during carrying due to accidental deformation of the main body 2. Therefore, the high-altitude work rucksack 1 can be easily stored and carried.

Industrial Applicability

[0034] The high-altitude work rucksack of the present invention can be used in high-altitude work such as removing bird nests built on iron towers.

Explanation of Reference Numerals

[0035] 1... High-altitude work rucksack, 2... Main body, 2a... Side surface, 2b... End portion, 2c... Second opening, 2d... First opening, 3... Backpack belt, 4, 5... Connecting belts, 6... Buckle, 7... Lid, 8... Second slide fastener, 9... First slide fastener, 8a... Second operating piece, 9a... First operating piece, 10... Male member, 10a... Protrusion, 11... Female member, 11a... Side opening, 12... First belt portion, 12a... Tip, 13... Second belt portion, 13a... Tip, 14... Length adjustment mechanism, 14a... Belt insertion hole, 50... User, 51... Fall arrest device, 52... Chest belt, 53... Crotch belt, 54... Shoulder belt, 55... Key lock body, 56... D-ring, 57... Brace

Claims

1. It consists of an elongated bag-shaped body that forms a U shape, a pair of backpack straps with both ends fixed to the back side of the side surface so as to be parallel to the straight part of the U shape from the end of the body toward the central part of the U shape, a first slide fastener provided at the edge of a first opening provided on the side surface of the body parallel to the longitudinal direction, and a first operating piece for operating the first slide fastener to open and close the first opening. A backpack for high-altitude work, characterized by comprising the above.

2. The backpack for high-altitude work according to claim 1, wherein the body has flexibility and is bent at the central part in the longitudinal direction so as to form the U shape.

3. It has a buckle consisting of a male member and a female member that are detachably connected, and is provided with a connecting belt for connecting the straight parts of the U shape so as to be orthogonal to the longitudinal direction. The connecting belt is characterized in that the base end side is fixed to the side surface of the body respectively, and the tip end side is composed of a first belt and a second belt provided with the male member and the female member respectively. The backpack for high-altitude work according to claim 2.

4. The connecting belts are provided on the back side and the front side of the side surface of the body in pairs, and the first opening is provided at a position sandwiched between the pair of connecting belts. The backpack for high-altitude work according to claim 3.

5. The body has its end closed, and a second opening is provided on the side surface at a position closer to the end than the connecting belt so as to be orthogonal to the longitudinal direction. a second slide fastener provided at the edge of this second opening, and a second operating piece for operating the second slide fastener to open and close the second opening. The backpack for high-altitude work according to claim 3.

6. The backpack strap has a buckle consisting of a male member and a female member that are detachably connected, and the base end side is fixed to the side surface of the body respectively, and the tip end side is composed of a first belt and a second belt provided with the male member and the female member respectively. The backpack for high-altitude work according to claim 2.

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