Loading hook

Abstract

To provide an unloading hook with a simple structure and an easy handling.SOLUTION: An unloading hook used for carrying loads by a load carrying apparatus comprises a hook-shaped part for suspending a load, and a fitting part for fitting it to a restiform body suspended from the load carrying apparatus. The fitting part is configured by movably engaging in the restiform body from a location near the hook-shaped part to a distant location with respect to the center of gravity.SELECTED DRAWING: Figure 12

Description

[Technical Field]

[0001] The present invention relates to a load-lowering hook used for transporting loads by load-carrying devices such as drones and helicopters. [Background technology]

[0002] Various types of load-lowering hooks have been proposed in the past.

[0003] For example, Patent Document 1 discloses a load-lowering hook that prevents a load from coming off the hook portion even when the load is transported to various locations and then lowered.

[0004] Furthermore, Patent Document 2 discloses a load-lowering hook that can automatically release a suspended load. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2019-18929 [Patent Document 2] Japanese Patent Application Publication No. 2020-183326 Summary of the Invention [Problem to be solved by the invention]

[0006] However, both of these have the problem of being complicated in structure and difficult to handle.

[0007] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a load-lowering hook that is simple in structure and easy to handle. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides a load-lowering hook for use in transporting loads using a load-carrying device, the hook comprising: A hook body has a bent portion bent in a dogleg shape, a first frame provided on one side of the bent portion, and a second frame provided on the other side of the bent portion, and the tip of the first frame is folded back toward the inner angle of the bent portion, a hook for hanging luggage; Provided at the bending portion, a mounting portion for mounting to a mounting portion of the load carrying device; It is connected to the tip of the second frame, and a fall prevention part that prevents the hook-shaped part from falling down, and the mounting part is configured to be movably engaged with the mounting part from a part close to the hook-shaped part with respect to the center of gravity to a part far from the hook-shaped part, and the fall prevention part is A pair of side members, one end of which is connected to the tip of the second frame, and a base member, the other end of which is connected to the side members, form a triangular shape. It is characterized by the following.

[0009] The mounting portion preferably has a mounting hole through which the mounted portion is inserted for mounting, and is configured so that the center of gravity is located within the mounting hole. [Effects of the Invention]

[0015] According to the present invention, it is possible to provide a load-lowering hook that is simple in structure and easy to handle. [Brief explanation of the drawings]

[0016] The drawings illustrate specific embodiments of the invention according to the present disclosure, including essential features of the invention as well as alternative and preferred embodiments. [Figure 1] 1 is a perspective view showing a load-lowering hook according to a first embodiment of the present invention; [Figure 2] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 3] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 4] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 5] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 6] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 7] FIG. 10 is a perspective view showing a modified example of the anti-falling portion of the lowering hook. [Figure 8] FIG. 10 is a perspective view for explaining the function of the fall prevention portion. [Figure 9]FIG. 6 is a perspective view showing a load-lowering hook according to a second embodiment of the present invention. [Figure 10] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 11] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 12] FIG. 10 is a perspective view showing a load-lowering hook according to a third embodiment of the present invention. [Figure 13] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 14] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 15] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 16] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 17] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 18] FIG. 10 is a perspective view showing a modified example of the attachment portion of the load-lowering hook. [Figure 19] FIG. 10 is a perspective view showing another modified example of the attachment portion of the load-lowering hook. [Figure 20] FIG. 10 is a perspective view showing a load-lowering hook according to a fourth embodiment of the present invention. [Figure 21] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 22] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 23] FIG. 4 is a perspective view for explaining the operation of the lowering hook. [Figure 24] FIG. 10 is a perspective view showing a load-lowering hook according to a fifth embodiment of the present invention. [Figure 25] FIG. 10 is a perspective view showing a load-lowering hook according to a sixth embodiment of the present invention. [Figure 26] FIG. [Figure 27] FIG. 10 is a perspective view showing a modified example of the load-lowering hook. [Figure 28] FIG. 10 is a perspective view showing a modified example of the load-lowering hook. [Figure 29]FIG. 10 is a perspective view showing a modified example of the load-lowering hook. [Figure 30] FIG. 13 is a perspective view showing a load-lowering hook according to a seventh embodiment of the present invention. [Figure 31] FIG. 10 is a front view showing a modified example of the load-lowering hook. [Figure 32] FIG. 10 is a perspective view showing a modified example of the load-lowering hook. DETAILED DESCRIPTION OF THE INVENTION

[0017] First Embodiment A first embodiment of the present invention will be described below with reference to the drawings.

[0018] In FIG. 1, reference numeral 1 denotes a load-lowering hook according to the present invention.

[0019] This load-lowering hook 1 is used to transport load W using a load-carrying device 2 such as a drone or helicopter, and has a hook body 3.

[0020] The hook body 3 is bent in a V-shape, with a bent portion 4 as the boundary, and one side of the bent portion 4 is a first frame portion 5 and the other side is a second frame portion 6.

[0021] The tip of the first frame portion 5 is folded back in the direction of the inner angle of the bent portion 4 to form a hook-shaped portion 7 for hanging luggage W.

[0022] In addition, a fall prevention part 8 that prevents the hook part 7 from falling is connected to the tip of the second frame part 6.

[0023] The fall prevention portion 8 is formed in a triangular shape by a pair of side members 9, 9 whose one ends are connected to the tip of the second frame 6, and a base member 10 whose other ends are connected to these side members 9, 9.

[0024] Further, the bent portion 4 of the hook body 3 is provided with an attachment portion 11 for attaching a cord-like body (attached portion) S that is part of the load carrying device 2 and hangs down from the load carrying device 2.

[0025] This mounting portion 11 has a curved member 12 whose ends are connected to the middle portion of the first frame portion 5 and the middle portion of the second frame portion 6, and this curved member 12, the first frame portion 5, and the second frame portion 6 form a mounting hole 13 through which the cord-like body S can be inserted.

[0026] The cord-like body S can move from a first portion 14 close to the hook-like portion 7 of the attachment hole 13 to a second portion 15 far from the hook-like portion 7.

[0027] The center of gravity G of the load-lowering hook 1 is configured to be located between the first portion 14 and the second portion 15.

[0028] In other words, the mounting portion 11 is configured so that the cord-like body S can be moved and swingably engaged with the fulcrum from a first portion 14 that is close to the hook-like portion 7 relative to the center of gravity G of the load-lowering hook 1 to a second portion 15 that is far from the hook-like portion 7.

[0029] When transporting the luggage W, the lower end portion of the rope-like body S hanging down from the luggage transporting device 2 is inserted into the mounting hole 13 of the luggage lowering hook 1 and is movably tied to the hook body 3 within the mounting hole 13.

[0030] Next, as shown in Figure 1, the string-like body P attached to the luggage W is hooked onto the hook-shaped portion 7 of the lowering hook 1, and when the luggage W is lifted, the hook-shaped portion 7 of the lowering hook 1 becomes downward due to the weight of the luggage W.

[0031] At this time, the cord-like body S is located at the second portion 15 of the mounting hole 13 of the mounting portion 11, that is, it is engaged with the load-lowering hook 1 above the center of gravity G.

[0032] In addition, since the hook body 3 is bent in a V-shape, the second frame portion 6 and lodging The blocking portion 8 does not interfere with the cord-like body S.

[0033] Next, as shown in Figure 2, when the cargo W lands, the string-like body P loosens, but the hook-like portion 7 of the cargo lowering hook 1 is on the lower side because the center of gravity G is below the attachment position of the string-like body S, i.e., the second part 15 of the attachment hole 13.

[0034] Next, when the lower end of the hook portion 7 of the hook 1 comes into contact with the cargo W as shown in FIG. 3, the hook 1 starts to rotate with the cord S as a fulcrum as shown in FIG.

[0035] Then, as shown in Figure 5, lodging When the blocking part 8 hits against the baggage W, the first part 14 is above the second part 15 of the mounting hole 13, and when the cord-like body S is pulled up, the cord-like body S moves from the second part 15 to the first part 14 within the mounting hole 13.

[0036] At this time, lodging The blocking portion 8 contacts the baggage W, and the hook portion 7 lodging can be prevented.

[0037] Next, as shown in FIG. 6, when the cord-like body S is further pulled up, the center of gravity G is lower than the first part 14, so that the hook part 7 is on the upper side and the cord-like body P is released from the hook part 7.

[0038] At this time, the first frame portion 5 does not interfere with the cord-like body S because the hook body 3 is bent in a V-shape.

[0039] According to the above-mentioned configuration, the load lowering hook 1 has no moving parts, so that the structure is simple and it is easy to handle.

[0040] In addition, lodging Although the blocking portion 8 is attached to the second frame portion 6, it may be provided in the vicinity of the hook portion 7 as shown in FIG.

[0041] That is, a pair of overhanging members 16, 16 are connected to the first frame portion 5 of the hook body 3, and as shown in FIG. 8, when these overhanging members 16, 16 come into contact with the baggage W, the hook-shaped portion 7 lodgingThis makes it possible to prevent this.

[0042] Second Embodiment A second embodiment of the present invention will be described below with reference to the drawings.

[0043] As shown in FIG. 9, in the second embodiment, the lodging The blocking portion 8 is not provided.

[0044] The mounting portion 11 is configured to be closer to the hook portion 7 than the center of gravity G of the load-lowering hook 1.

[0045] That is, in this second embodiment, the mounting portion 11 is provided at the bending portion 4, and the center of gravity G is configured to be located on the second frame portion 6 side, and the cord-like body S inserted into the mounting hole 13 is always engaged with the lowering hook 1 on the hook-like portion 7 side of the center of gravity G of the lowering hook 1.

[0046] In this case, the mounting hole 13 of the mounting portion 11 is formed to a size that allows the load-lowering hook 1 to rotate relative to the rope-like body S inserted into the mounting hole 13, i.e., a size that allows the rope-like body S to be loosely inserted into the mounting hole 13.

[0047] As shown in Figure 9, when the string-like body P attached to the cargo W is hooked onto the hook portion 7 of the lowering hook 1 and the cargo W is lifted, the hook portion 7 of the lowering hook 1 becomes downward due to the weight of the cargo W.

[0048] Next, as shown in Figure 10, when the cargo W lands, the string-like body P loosens, and the center of gravity G of the cargo-lowering hook 1 is located above the mounting part 11, so the string-like body S begins to rotate as a fulcrum so that the center of gravity G is below the mounting part 11.

[0049] As a result, the rope-like body S is released from the hook-like part 7 without the load-lowering hook 1 coming into contact with the load W.

[0050] Next, as shown in FIG. 11, when the cord-like body S is pulled up, the center of gravity G is below the attachment part 11 and the hook-like part 7 is on the upper side.

[0051] Even in the above configuration, the load lowering hook 1 has no moving parts, so it has a simple structure and is easy to handle.

[0052] <Third embodiment> A third embodiment of the present invention will be described below with reference to the drawings.

[0053] In the third embodiment, as shown in FIG. 12, a pair of hook portions 7 and a pair of mounting portions 11 are provided.

[0054] The hook-shaped portions 7, 7 and the attachment portions 11, 11 are formed by bending a single filament 17 and arranging them in parallel at a predetermined interval.

[0055] That is, the filament 17 has a connecting portion 18 of a predetermined width in the center, and both ends of this connecting portion 18 are bent in the same direction to form a pair of parallel portions 19, 19.

[0056] The parallel portions 19, 19 are bent midway, and the connecting portion 18 side of the bent portions 4, 4 is a first parallel portion 20, 20, and the opposite side to the connecting portion 18 is a second parallel portion 21, 21.

[0057] In addition, these parallel portions 19, 19 are bent into a ring shape at the bending portions 4, 4 to form mounting holes 13, 13 for the mounting portions 11, 11, and the cord-like bodies S, S hanging down from the luggage carrying device 2 are inserted into these mounting holes 13, 13, respectively, so as to be attached to the mounting portions 11, 11.

[0058] The filament 17 of the mounting portion 11,11 is bent and formed symmetrically with respect to the plane so that the second parallel portions 21,21 are on the outside relative to the first parallel portions 20,20, and as a result, the spacing between the second parallel portions 21,21 is wider than the spacing between the first parallel portions 20,20.

[0059] The tips of the second parallel portions 21, 21 are folded back in the same direction to form hook-shaped portions 7, 7.

[0060] Each cord-like body S can move from a first portion 14 close to the hook portion 7 of the attachment hole 13 to a second portion 15 far from the hook portion 7.

[0061] The center of gravity G of the load-lowering hook 1 is configured to be located between the first portion 14 and the second portion 15 and between the mounting holes 13, 13.

[0062] In other words, each mounting portion 11 is configured so that the cord-like body S can be moved and swingably engaged with the fulcrum from a first portion 14 close to the hook-like portion 7 to a second portion 15 far from the hook-like portion 7 relative to the center of gravity G of the load-lowering hook 1.

[0063] When transporting the luggage W, the lower end portions of the rope-like bodies S, S hanging down from the luggage transporting device 2 are inserted into the mounting holes 13, 13 of the luggage lowering hook 1, respectively, and are tied to the hook bodies 3, 3 so that they can move within the mounting holes 13.

[0064] Next, as shown in Figure 12, the string-like body P attached to the luggage W is hooked onto the hook-shaped portions 7, 7 of the lowering hook 1, and when the luggage W is lifted, the hook-shaped portions 7, 7 of the lowering hook 1 become downward due to the weight of the luggage W.

[0065] At this time, each cord-like body S is located at the second portion 15 of the mounting hole 13 of the mounting portion 11, that is, it is engaged with the load-lowering hook 1 above the center of gravity G.

[0066] Next, as shown in Figure 13, when the cargo W lands, the string-like body P loosens, but the hook-like portions 7, 7 of the cargo-lowering hook 1 are on the lower side because the center of gravity G is below the attachment position of the string-like body S, i.e., the second portion 15 of the attachment hole 13.

[0067] Next, as shown in FIG. 14, when the lower ends of the hook portions 7, 7 of the hook 1 come into contact with the cargo W, the hook 1 starts to rotate around the cords S, S as a fulcrum, as shown in FIG.

[0068] Next, as shown in Figure 16, when the connecting portion 18 hits the luggage W, the first portion 14,14 is above the second portion 15,15 of the mounting holes 13,13, and when the cord-like bodies S,S are pulled up, the cord-like bodies S,S move from the second portion 15 to the first portion 14 within the mounting holes 13,13.

[0069] At this time, the connecting portion 18 and the hook portions 7, 7 come into contact with the luggage W, and the hook portions 7, 7 lodging can be prevented.

[0070] Next, as shown in FIG. 17, when the cord-like bodies S, S are further pulled up, the center of gravity G becomes lower than the first part 14, so the hook-like parts 7, 7 come to the upper side, and the cord-like bodies P come off the hook-like parts 7, 7.

[0071] According to the above-mentioned configuration, the load lowering hook 1 has no moving parts, so that the structure is simple and easy to handle, and furthermore, the load lowering hook 1 can be easily manufactured.

[0072] Furthermore, since the attachment parts 11, 11 are provided at a predetermined interval and suspended by two cord-like bodies S, S, it is possible to reduce the shaking of the luggage W, for example, due to rotation.

[0073] Furthermore, the connecting portion 18 and the pair of spaced apart hook portions 3, 3 can prevent the load-lowering hook 1 from falling over.

[0074] In the third embodiment, the attachment portion 11 is formed in a ring shape, but it may be formed in a triangular shape as shown in FIG. 18 or an oval shape as shown in FIG.

[0075] <Fourth embodiment> A fourth embodiment of the present invention will be described below with reference to the drawings.

[0076] In the third embodiment, the center of gravity G of the load-lowering hook 1 was configured to be located between the first portion 14 and the second portion 15 and between the mounting holes 13, 13, but in this fourth embodiment, the mounting holes 13, 13 are made small, and the center of gravity G is configured to be located between the first parallel portions 20, 20 on the connecting portion 18, 18 side rather than between the mounting holes 13, 13.

[0077] As shown in Figure 20, when the rope-like bodies S, S attached to the cargo W are hooked onto the hook-like portions 7, 7 of the lowering hook 1 and the cargo W is lifted, the hook-like portions 7, 7 of the lowering hook 1 are positioned downward due to the weight of the cargo W.

[0078] Next, as shown in Figure 21, when the luggage W lands, the rope-like bodies S, S loosen, and the center of gravity G of the lowering hook 1 is located above the mounting parts 11, 11, so the rope-like bodies S, S begin to rotate around the fulcrum so that the center of gravity G is below the mounting parts 11, 11.

[0079] As a result, the rope-like bodies S, S are released from the hook-like portions 7, 7 without the load-lowering hook 1 coming into contact with the load W, as shown in FIG.

[0080] Next, as shown in FIG. 23, when the cord-like bodies S, S are pulled up, the center of gravity G is located below the attachment parts 11, 11, and the hook-like parts 7, 7 are located on the upper side.

[0081] Even in the above configuration, the load lowering hook 1 has no moving parts, so it has a simple structure and is easy to handle.

[0082] Fifth Embodiment A fifth embodiment of the present invention will be described below with reference to the drawings.

[0083] In the third and fourth embodiments, the cargo-lowering hook 1 is formed by bending a single filament 17, but the cargo-lowering hook 1 in the first and second embodiments may also be formed by bending a single filament 17.

[0084] FIG. 24 shows an example in which the load-hanging hook 1 of the first embodiment is formed by bending a single wire member 17.

[0085] Sixth Embodiment A sixth embodiment of the present invention will be described below with reference to the drawings.

[0086] In the third embodiment, the lowering hook 1 was attached to a rope-like body S as the attachment part, but in this embodiment, as shown in Figures 25 and 26, the lowering hook 1 is attached to a binding member (attachment part) T attached to the leg 22 of the load transporting device 2.

[0087] That is, by inserting the binding member T into the mounting hole 13 of the mounting portion 11 and binding it to the leg portion 22 of the load-carrying device 2, the mounting portion 11 is configured to be able to engage with the cord-like body S movably and swingably as a fulcrum from a first portion 14 close to the hook-shaped portion 7 relative to the center of gravity G of the load-lowering hook 1 to a second portion 15 far from the hook-shaped portion 7.

[0088] In addition, in consideration of the limited space around the legs 22 of the load carrying device 2, the first parallel portion 20 is formed short, and a weight 24 is attached to the connecting portion 18.

[0089] As shown in Figure 27, two lowering hooks 1 may be attached to legs 22, 22 facing each other, or as shown in Figure 28, two lowering hooks 1 may be attached to legs 22, 22 facing the same direction.

[0090] Furthermore, instead of the first parallel portions 22, 22, inclined portions 25, 25 inclined inward may be provided as shown in FIG.

[0091] Seventh Embodiment A seventh embodiment of the present invention will be described below with reference to the drawings.

[0092] In the third embodiment, a cord-like body S was used as the attachment part, and in the sixth embodiment, a binding member T was used as the attachment part, but in this embodiment, as shown in Figure 30, the load-lowering hook 1 is attached by inserting the leg part 22 of the load-carrying device 2 into the attachment hole 13 of the attachment part 11, and the attachment part 11 is configured so that it can be moved from a first part 14 close to the hook part 7 relative to the center of gravity G of the load-lowering hook 1 to a second part 15 far from the hook part 7 and can be engaged with the leg part 22 so as to be swingable as a fulcrum.

[0093] 31 and 32 show an example in which the hook 1 of the sixth embodiment is applied to this embodiment.

[0094] In Figure 31, two load-hanging hooks 1 are attached to legs 22, 22 with the hook-shaped portions 7 facing in the same direction, and in Figure 32, two load-hanging hooks 1 are attached to legs 22, 22 with the hook-shaped portions 7 facing in opposite directions. [Explanation of symbols]

[0095] 1 Loading hook 2. Load-carrying equipment 7 Unicum 8 Lodging prevention part 11 Mounting part 13 Mounting holes 17 linear body 22 Mounting part (leg) Double Luggage S Attached part (cord-like body) G center of gravity T Attachment part (binding part)

Claims

1. Used for transporting loads by a load-carrying device, a hook body having a bent portion bent in a dogleg shape, a first frame provided on one side of the bent portion, and a second frame provided on the other side of the bent portion; a hook-shaped portion formed by folding back a tip of the first frame toward an inner angle of the bent portion and used to hang the load; an attachment portion provided on the bending portion for attachment to an attachment portion of the load carrying device; a fall prevention portion connected to a tip of the second frame and preventing the hook-shaped portion from falling; Equipped with The mounting portion is configured to be movably engaged with the mounting portion from a portion close to the hook-shaped portion with respect to the center of gravity to a portion far from the hook-shaped portion, The fall prevention portion is formed in a triangular shape by a pair of side members each having one end connected to the tip of the second frame and a base member connected to the other end of the side members. A load lowering hook characterized by:

2. The load-lowering hook according to claim 1, characterized in that the mounting portion has a mounting hole through which the mounted portion is inserted and configured so that the center of gravity is located within the mounting hole.

Images