Hand traction tool

Abstract

To provide a hand traction tool which improves workability and safety.SOLUTION: A hand traction tool comprises a hand traction part locked in a cargo medium, and a leg part which supports the hand traction part. The hand traction part comprises: a rod-like base part having a bending part; a gripping part which is provided in one side rather than the bending part in the base part, and griped by a user; a claw part which is provided in the other side rather than the bending part in the base part, and lockable in the cargo medium in a shape curved to the gripping part side; and a connection part which is provided in the other side rather than the bending part in the base part, and connects the leg part to the base part. The base part is bent such that the gripping part is in proximity to the claw part in the bending part. The leg part comprises: a shaft part slidably and pivotally supported to the connection part at the one side; a contact part which is provided in the other side of the shaft part, and can be brought into contact with an inside of the cargo medium; and an elastic part which energizes the contact part in the direction of separating from the connection part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a hand hook. [Background technology]

[0002] At work sites such as logistics warehouses and factories, cargo handling vehicles carrying or storing cargo are transported. Methods for moving cargo handling vehicles include using a transport device such as a forklift or hand lift, but a simpler method is to tow the vehicle using a rod-shaped hand hook.

[0003] For example, Patent Document 1 discloses a hand hook (towing device) for dragging and towing cargo, which is made up of a shaft member and an L-shaped hook member attached to the tip of the shaft member. This hand hook hooks the hook member from below onto the handle of the cargo handling medium (item storage container), and by grasping and pulling the grip member, the cargo handling medium is dragged and towed. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-74619 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the hand hook of Patent Document 1 is difficult to disengage from the loading medium while towing the loading medium, but is easily disengaged when the towing force is released, resulting in poor workability. Furthermore, if the engagement between the hand hook and the loading medium is unintentionally released by the worker during towing, there is a risk that the worker may lose balance and fall. Thus, if the engagement between the hand hook and the loading medium is unintentionally released by the worker during towing, there is a risk that the worker may experience unexpected trouble.

[0006] The present disclosure has been made in consideration of the above-described circumstances, and aims to provide a hand hook with improved workability and safety. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the hand hook of the present disclosure is a hand hook having a hand hook portion that engages with a loading medium and a leg portion that supports the hand hook portion, wherein the hand hook portion has a rod-shaped base portion with a bent portion, a grip portion that is provided on one side of the bent portion at the base and is for the user to grasp, a claw portion that is provided on the other side of the bent portion at the base and is curved toward the grip portion so that it can engage with the loading medium, and a connecting portion that is provided on the other side of the bent portion at the base and connects the leg portion to the base, wherein the base is bent at the bent portion so that the grip portion and the claw portion are close to each other, and the leg portion has a shaft portion that is slidably supported on the connecting portion on one side, an abutment portion that is provided on the other side of the shaft portion and can abut against the inside of the loading medium, and an elastic portion that urges the abutment portion in a direction away from the connecting portion. [Effects of the Invention]

[0008] According to the present disclosure, a hand hook with improved workability and safety can be provided. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic diagram showing the configuration of a hand hook according to a first embodiment. FIG. [Figure 2] 1 is a schematic diagram showing the configuration of a hand hook according to a first embodiment. FIG. [Figure 3] 1 is a schematic perspective view showing the configuration of a loading medium according to a first embodiment. [Figure 4] 1 is a schematic diagram for explaining an example of use of the hand hook of the first embodiment. FIG. [Figure 5] 1 is a schematic diagram for explaining an example of use of the hand hook of the first embodiment. FIG. [Figure 6] 1 is a schematic diagram for explaining an example of use of the hand hook of the first embodiment. FIG. [Figure 7] 1 is a schematic diagram for explaining an example of use of the hand hook of the first embodiment. FIG. [Figure 8] 1 is a schematic diagram for explaining an example of use of the hand hook of the first embodiment. FIG. [Figure 9] 1 is a schematic diagram for explaining an example of use of the hand hook of the first embodiment. FIG. [Figure 10] FIG. 2 is a schematic cross-sectional view showing the configuration of the vicinity of the connecting portion of the hand hook of the first embodiment. [Figure 11] FIG. 10 is a schematic cross-sectional view showing the configuration of the periphery of a connecting portion of a hand hook according to a second embodiment. [Figure 12] FIG. 10 is a schematic cross-sectional view showing the configuration of the periphery of a connecting portion of a hand hook according to a second embodiment. [Figure 13] FIG. 10 is a schematic cross-sectional view showing the configuration of the vicinity of a connecting portion of a hand hook according to a third embodiment. [Figure 14] FIG. 10 is a schematic cross-sectional view showing the configuration of the vicinity of the connecting portion of the hand hook of the third embodiment. [Figure 15] FIG. 10 is a schematic diagram showing the configuration of a hand hook according to a fourth embodiment. [Figure 16] FIG. 10 is a schematic diagram showing the configuration of a hand hook according to a fifth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] 1. Configuration of the hand hook of the first embodiment 1 and 2 are schematic diagrams showing a hand hook 10 according to a first embodiment. Fig. 1 is also a schematic side view of the hand hook 10 as viewed along the X direction. Fig. 2 is also a schematic rear view of the hand hook 10 as viewed along the Y direction, which is perpendicular to the X direction.

[0011] In this specification, "one side" of each part of the hand hook 10 means the side closer to the side that accepts operation by the user of the hand hook 10, and "the other side" means the side opposite to that one side.

[0012] The hand hook 10 is used to tow a loading medium 150 (see FIG. 3, etc.). The hand hook 10 includes a hand hook portion 20, a leg portion 60, and the like.

[0013] The hook portion 20 is directly operated by a user of the hook 10. The hook portion 20 is appropriately locked to the loading medium 150. The hook portion 20 includes a base portion 22, a grip portion 26, a claw portion 28, a connecting portion 30, and the like.

[0014] The base 22 is a long, cylindrical rod-shaped member, and has a bent portion 24 at its midpoint. The base 22 is bent at the bent portion 24 so that the peripheral surface of the grip portion 26 and the tip of the claw portion 28 are close to each other.

[0015] For these reasons, the base 22 has two axes, one of which corresponds to the first portion 22a, which is the portion of the base 22 on one side of the bent portion 24. The other axis corresponds to the second portion 22b, which is the portion of the base 22 on the other side of the bent portion 24.

[0016] The gripping portion 26 is a long, cylindrical rod-shaped member and is provided on the first portion 22a of the base portion 22. Specifically, the gripping portion 26 is provided on one side end portion of the base portion 22. The gripping portion 26 extends in a direction perpendicular to the first portion 22a of the base portion 22 and perpendicular to the second portion 22b of the base portion 22. In the example shown in FIGS. 1 and 2, the gripping portion 26 extends in the Y direction.

[0017] The grip portion 26 is connected to one side end of the base portion 22 at approximately the center. Therefore, the periphery of one side end of the hook portion 20 forms a substantially T-shape. The user of the hook 10 can grip the grip portion 26 as needed.

[0018] The claw portion 28 is a claw-shaped member and is provided on the second portion 22b of the base 22. Specifically, the claw portion 28 is provided on the other end portion of the base 22. The claw portion 28 is curved toward the grip portion 26 and faces the first portion 22a of the base 22. The claw portion 28 is further shaped to widen in the extension direction of the grip portion 26 as it moves toward the tip. Such a claw portion 28 is appropriately engaged with the loading medium 150.

[0019] The connecting portion 30 is a member having a rectangular cylindrical shape, specifically a quadrangular cylindrical shape, and more specifically a square cylindrical shape, and is provided on the second portion 22b of the base 22. Specifically, the connecting portion 30 is provided on the second portion 22b of the base 22, on the side opposite to the protruding direction of the claw portion 28. The connecting portion 30 is provided on the second portion 22b of the base 22 so that one of the four outer peripheral surfaces is in contact with the second portion 22b of the base 22. The connecting portion 30 extends substantially parallel to the second portion 22b of the base 22.

[0020] A through hole 32 having a polygonal cross section, specifically a quadrangular cross section, and more specifically a square cross section, is formed in the connecting portion 30. The connecting portion 30 slidably supports a shaft portion 62 of a leg portion 60 (described later) therein, thereby connecting the shaft portion 62 of the leg portion 60 to the base portion 22.

[0021] The leg portion 60 supports the hand hook portion 20. In addition to the shaft portion 62, the leg portion 60 includes a rotation mechanism 64, a contact portion 70, an elastic portion 80, a drop prevention portion 82, and the like.

[0022] The shaft portion 62 is a long, cylindrical rod-shaped member that extends substantially parallel to the second portion 22b of the base portion 22. The shaft portion 62 is inserted into the through-hole 32 of the connecting portion 30, and one side of the shaft portion 62 is slidably supported inside the connecting portion 30.

[0023] As described above, the connecting portion 30 is a rectangular cylindrical member, and the shaft portion 62 is a long cylindrical rod. Therefore, the shaft portion 62 is journaled inside the connecting portion 30 so as to be slidable in the circumferential direction and in the extension direction (axial direction).

[0024] The rotation mechanism 64 rotatably connects the contact portion 70 to the other end of the shaft portion 62. The rotation mechanism 64 includes a rotation shaft portion 66, a fixing portion 68, and the like.

[0025] The rotating shaft portion 66 is a cylindrical rod-shaped member that extends in a direction perpendicular to the extension direction of the shaft portion 62. In the example shown in Figures 1 and 2, the rotating shaft portion 66 extends in the X direction. The rotating shaft portion 66 is inserted into both the other end of the shaft portion 62 and the bearing portion 74 of the abutment portion 70.

[0026] The fixing portion 68 prevents the rotating shaft portion 66 from falling off from both the other end of the shaft portion 62 and the bearing portion 74 of the abutment portion 70. The fixing portion 68 may be, for example, a bolt, a nut, or the like.

[0027] The rotation mechanism 64 allows both the shaft portion 62 and the contact portion 70 to rotate around the rotation shaft portion 66. With this rotation mechanism 64, it is possible to adjust the angle between the shaft portion 62 and the contact portion 70 as appropriate.

[0028] The abutment portion 70 is provided on the other end of the shaft portion 62 via a rotation mechanism 64. It can also be said that the abutment portion 70 is supported on the other end of the shaft portion 62 so as to be rotatable around a rotation axis that is perpendicular to the extension direction of the shaft portion 62.

[0029] The contact portion 70 includes a support portion 72, a bearing portion 74, and a protrusion 76. The support portion 72 is a plate-shaped member and extends in a direction perpendicular to both the extension direction of the shaft portion 62 and the extension direction of the rotation shaft portion 66. In the example shown in FIGS. 1 and 2, the support portion 72 extends in the Y direction. The other surface of the support portion 72 is a contact surface 72a that contacts the inside of the loading medium 150.

[0030] The bearing portion 74 supports the rotation shaft portion 66 of the rotation mechanism 64. The protrusion portion 76 protrudes from the abutment surface 72a of the support portion 72 and extends in the same direction as the rotation shaft portion 66. In other words, the protrusion portion 76 extends parallel to the rotation axis of the abutment portion 70.

[0031] Such a contact portion 70 is appropriately contacted with the inside of the loading medium 150. When the contact portion 70 is contacted with the inside of the loading medium 150, the convex portion 76 is engaged with the concave and convex portions on the inside of the loading medium 150.

[0032] Furthermore, with such connecting portion 30, shaft portion 62, and abutting portion 70, for example, it is possible to move the abutting portion 70 closer to the connecting portion 30, move the abutting portion 70 away from the connecting portion 30, or rotate the hook portion 20 around the shaft portion 62 as the axis of rotation.

[0033] The elastic portion 80 is provided between the connecting portion 30 and the abutting portion 70 in a state in which it is compressed to some extent in advance. One end of the elastic portion 80 contacts the other end of the connecting portion 30, specifically the other end face of the connecting portion 30. The other end of the elastic portion 80 is fixed in position to the other end of the shaft portion 62.

[0034] The elastic part 80 biases the abutting part 70 in a direction that moves it away from the connecting part 30. Specifically, the elastic part 80 biases the abutting part 70 in a direction from one side of the shaft part 62 to the other side. The biasing force of the elastic part 80 is stronger than the force acting due to the weight of the hook part 20. In other words, the biasing force of the elastic part 80 is set to a strength that prevents the hook part 20 from being compressed by its own weight alone.

[0035] A cylindrical elastic member such as a coil spring is used as the elastic portion 80. The inner diameter of the elastic portion 80 is larger than the outer diameter of the shaft portion 62. The outer diameter of the elastic portion 80 is also larger than the distance (inner dimension) between the opposing inner circumferential surfaces of the connecting portion 30, and smaller than the distance (outer dimension) between the opposing outer circumferential surfaces of the connecting portion 30. Furthermore, to prevent the elastic portion 80 from bending, the shaft portion 62 is inserted into the elastic portion 80.

[0036] The connecting portion 30, shaft portion 62, contact portion 70, elastic portion 80, etc. allow the contact portion 70 to approach the connecting portion 30 against the biasing force of the elastic portion 80. Note that the elastic portion 80 is not limited to a coil spring and may be an air damper or the like.

[0037] The fall-off prevention portion 82 prevents the shaft portion 62 from falling off from the connecting portion 30 due to the separation of the abutment portion 70 from the connecting portion 30. The fall-off prevention portion 82 is located on one side of the connecting portion 30 on the shaft portion 62, and protrudes in the radial direction of the shaft portion 62.

[0038] When the abutment portion 70 moves away from the connecting portion 30, the fall-off prevention portion 82 catches on the connecting portion 30, preventing the shaft portion 62 from falling off from the connecting portion 30. For example, a threaded hole (not shown) is formed in the circumferential surface of the shaft portion 62, and a bolt fitted into the threaded hole serves as the fall-off prevention portion 82.

[0039] Furthermore, a substantially V-shaped notch 30a is formed at one end of the connecting portion 30. When the fall-off prevention portion 82 is caught on the connecting portion 30 and fitted into the notch 30a, the fall-off prevention portion 82 is caught in the notch 30a in the circumferential direction of the shaft portion 62. Therefore, in this case, the hand hook 20 and the leg portion 60 are each restricted from independent movement in the circumferential direction of the shaft portion 62. In the example shown in FIGS. 1 and 2, when the protruding direction of the claw portion 28 and the extending direction of the rotating shaft portion 66 are the same, the fall-off prevention portion 82 can be fitted into the notch 30a.

[0040] 2.Loading medium Next, the loading medium 150 will be described with reference to Fig. 3. Fig. 3 is a schematic perspective view showing the configuration of the loading medium 150 of the first embodiment. The loading medium 150 is a pallet on which cargo can be placed and which has a hollow interior. The loading medium 150 is formed in a roughly square, thick plate shape overall.

[0041] The loading medium 150 has a pair of receiving portions 152. Each receiving portion 152 is plate-shaped and faces each other. Cargo and the like can be placed on the outside of the receiving portions 152. The loading medium 150 also has a plurality of pillar members 154. Each pillar member 154 integrally connects the receiving portions 152 together between the receiving portions 152.

[0042] Furthermore, the loading medium 150 has an insertion port 156 through which the fork portion of a hand lift or a forklift can be inserted and removed. The insertion port 156 is formed by being partitioned by the placement portion 152 and the column member 154. The insertion port 156 of the loading medium 150 is provided on one of the four side surfaces. The insertion port 156 may also be provided on two side surfaces that are perpendicular to each other.

[0043] In each of the mounting portions 152, ribs 158 extend in a lattice pattern, forming a plurality of openings 160. Of the ribs 158 of the mounting portion 152, the ribs 158 aligned in a direction perpendicular to the opening of the insertion port 156 serve as engaging portions 162 to which the hand hook 10 is appropriately engaged. In addition, in each of the mounting portions 152, the openings 160 are formed by the extension of the ribs 158, so it can be said that unevenness is formed on the outside and inside of each of the mounting portions 152.

[0044] The cargo handling medium 150 is placed on a floor F (see FIG. 4) in a warehouse, a container, etc. In this case, the receiving portions 152 face each other in the vertical direction, one receiving portion 152 contacts the floor F, and cargo is placed on the other receiving portion 152 as appropriate.

[0045] That is, one of the mounting portions 152 is used as a top plate and the other is used as a floor plate. In the following description, the mounting portion 152 used as a top plate will be referred to as a first mounting portion 152a, and the mounting portion 152 used as a floor plate will be referred to as a second mounting portion 152b.

[0046] The claw portion 28 is appropriately locked to the locked portion 162 of the first placed portion 152a, and the abutting portion 70 is appropriately abutted against the inside of the second placed portion 152b. When the abutting portion 70 is abutted against the inside of the second placed portion 152b, the convex portion 76 is locked to the unevenness on the inside of the second placed portion 152b, specifically, the locked portion 162 of the second placed portion 152b.

[0047] In addition, the maximum distance between the abutment portion 70 and the connecting portion 30 is set so that when the claw portion 28 is engaged with the engaging portion 162 of the first receiving portion 152a and the abutment portion 70 is abutting against the inside of the second receiving portion 152b, the height from the abutment portion 70 to the claw portion 28 is the same as the height from the second receiving portion 152b to the first receiving portion 152a.

[0048] 3. Examples of using hand hooks Next, an example of how to use the hand hook 10 will be described with reference to Fig. 4 to Fig. 9. Fig. 4 to Fig. 9 are schematic diagrams for explaining an example of how to use the hand hook 10 of the first embodiment. A user of the hand hook 10 operates the hand hook 10 by gripping the gripping portion 26.

[0049] In addition, in the description of the usage examples of the hand hook 10, the front-rear direction, left-right direction, and vertical direction refer to the directions as seen from the user of the hand hook 10. The user of the hand hook 10 stands on the opposite side of the hand hook 10 from the side facing the loading medium 150, and faces the direction in which the loading medium 150 is located. Therefore, in the description of the usage examples of the hand hook 10, for example, the front refers to the direction from the hand hook 10 toward the loading medium 150.

[0050] First, as shown in Fig. 4, the hand hook 10 in the normal state is brought close to the insertion port 156 of the loading medium 150. The normal state of the hand hook 10 means, for example, a state in which the protrusion 76 of the hand hook 10 faces forward, but is not particularly limited thereto.

[0051] 5, with the entire hand hook 10 tilted away from the loading medium 150, the contact surface 72a of the support portion 72 is brought into contact with the second receiving portion 152b of the insertion port 156. Specifically, the contact surface 72a of the support portion 72 is brought into contact with the second receiving portion 152b of the insertion port 156 from the front end.

[0052] At this time, the rear end of the contact surface 72a of the support portion 72 is brought into contact with the floor F. This prevents the contact portion 70 from rotating due to the resistance of the second placement portion 152b. At this time, a part of the front of the contact portion 70 is inserted into the insertion port 156.

[0053] Next, when the user of the hook 10 applies force to the gripping portion 26 and the connecting portion 30 slides against the biasing force of the elastic portion 80, the elastic portion 80 is compressed as shown in Fig. 6. At this time, the notch 30a of the connecting portion 30 and the fall-off prevention portion 82 move away from each other, and the restriction on the rotational movement of the hook 20 is released.

[0054] Next, when the user of the hand hook 10 turns the gripping portion 26 to the right while applying force to the gripping portion 26, the hand hook 20 rotates around the shaft portion 62 as the axis of rotation, and the claw portion 28 is inserted into the insertion port 156 as shown in Figure 7.

[0055] Next, as shown in Figure 8, if the worker continues to apply force to the gripping portion 26 and tilts the operating portion 12 further away from the loading medium 150, the forward force acting on the abutment portion 70 becomes greater than the downward force, and the claw portion 28 and the abutment portion 70 move toward the loading medium 150.

[0056] When both the claw portion 28 and the contact portion 70 move toward the inside of the loading medium 150, the contact point between the contact surface 72a and the insertion port 156 gradually moves rearward of the contact surface 72a, and the rear of the support portion 72 is gradually pushed upward by the second placement portion 152b. In other words, when the claw portion 28 and the contact portion 70 move toward the inside of the loading medium 150, the contact portion 70 gradually rotates forward.

[0057] Furthermore, when both the claw portion 28 and the abutment portion 70 move toward the inside of the loading medium 150 and the abutment portion 70 rotates, as shown in Figure 8, the abutment surface 72a of the support portion 72 abuts against the inside of the second receiving portion 152b, and the convex portion 76 is engaged with the engaging portion 162 of the second receiving portion 152b.

[0058] Next, when the operator reduces the force being applied to the gripping portion 26, the force of the elastic portion 80 causes the claw portion 28 to move away from the abutment portion 70 along the extension direction of the shaft portion 62, and as shown in Figure 9, the claw portion 28 is engaged with the engaging portion 162 of the first mounting portion 152a.

[0059] When both the claw portion 28 and the contact portion 70 are engaged with the loading medium 150, the claw portion 28 and the contact portion 70 are positioned in the same vertical direction, the contact portion 70 is in contact with the inside of the second receiving portion 152b, and the claw portion 28 is engaged with the engaged portion 162 of the first receiving portion 152a. Also, at this time, the convex portion 76 of the contact portion 70 is engaged with the concave and convex portions on the inside of the second receiving portion 152b, specifically, with the engaged portion 162 of the second receiving portion 152b.

[0060] In the first embodiment, as shown in Fig. 9, the hook 10 is maintained in a state of being hooked to the loading medium 150 by the biasing force of the elastic part 80. Therefore, in the first embodiment of the hook 10, even if the user of the hook 10 loosens the pulling force on the grip part 26, the hook 10 is maintained in a state of being hooked to the loading medium 150.

[0061] That is, the user of the hand hook 10 can easily move the loading medium 150 simply by pulling the gripping portion 26. Furthermore, the hand hook 10 of this embodiment prevents the hand hook 10 from being unintentionally disengaged from the loading medium 150. Therefore, the hand hook 10 of this embodiment can prevent the user of the hand hook 10 from falling or other unexpected troubles during pulling work. For these reasons, the hand hook 10 of the first embodiment improves the user's workability and safety.

[0062] In the hand hook 10 of the first embodiment, the base 22 is bent so that the peripheral surface of the gripping portion 26 and the tip of the claw portion 28 are close to each other. Therefore, as shown in Fig. 9, when the abutting portion 70 abuts against the inside of the second placed portion 152b and the claw portion 28 is locked to the locked portion 162 of the first placed portion 152a, the position of the gripping portion 26 is higher than when the base 22 is straight.

[0063] The loading medium 150 is generally low in height and placed on the floor F. When the contact portion 70 contacts the inside of the second receiving portion 152b and the claw portion 28 is engaged with the engaging portion 162 of the first receiving portion 152a, adjustment of the position of the gripping portion 26 in the height direction is limited according to the width of the insertion port 156 in the height direction.

[0064] For these reasons, when the base 22 has a straight line shape, the grip 26 may be positioned lower than the hand of the user of the hand hook 10. In other words, when the base 22 has a straight line shape, the user of the hand hook 10 may be required to assume a posture that places a burden on the user, such as bending forward.

[0065] In the hand hook 10 of the first embodiment, the base 22 is bent, so that the abutting portion 70 abuts against the inside of the second receiving portion 152b, and even when the hook portion 28 is locked to the locked portion 162 of the first receiving portion 152a, the gripping portion 26 is in a high position. Therefore, according to the hand hook 10 of the first embodiment, the burden on the user of the hand hook 10 when towing the loading medium 150 is reduced, and as a result, the user's workability is improved.

[0066] 4. Second embodiment Fig. 10 is a schematic cross-sectional view showing the configuration around the connecting portion 30 of the hand hook 10 of the first embodiment. Fig. 10 is also a schematic cross-sectional view of the hand hook 10 shown in Fig. 2 cut along the XZ plane. In the first embodiment, when sliding the connecting portion 30 against the biasing force of the elastic portion 80, a force F1 may be applied to the grip portion 26 by the user. Note that the force F1 is a force directed from one end to the other end in the extension direction of the first portion 22a of the base 22.

[0067] Furthermore, in the first embodiment, because the base portion 22 is bent, when the connecting portion 30 is slid against the biasing force of the elastic portion 80, the shaft portion 62 may tilt relative to the connecting portion 30, as shown in Fig. 10. Specifically, the shaft portion 62 may tilt so that the distance to the second portion 22b of the base portion 22 decreases as it moves from one end to the other end.

[0068] In this way, as the connecting portion 30 slides against the biasing force of the elastic portion 80, the shaft portion 62 tilts relative to the connecting portion 30, and when force F1 is applied to the gripping portion 26, the inside of the other end of the connecting portion 30 makes one-sided contact with the shaft portion 62, as shown in Figure 10.

[0069] Furthermore, such uneven contact of the connecting part 30 with the shaft part 62 acts to bite into the shaft part 62. Therefore, when the connecting part 30 makes uneven contact with the shaft part 62 in this way, there is a risk that they may become locked together.

[0070] Therefore, in the second embodiment, the configuration of the connecting portion 30 is changed. In addition, the second embodiment is the same as the first embodiment except for the change in the configuration of the connecting portion 30. Therefore, in the second embodiment, explanations that overlap with the first embodiment may be omitted. Figure 11 is a schematic cross-sectional view showing the configuration around the connecting portion 30 of the hand hook 10 of the second embodiment.

[0071] In the connecting portion 30 of the second embodiment, the opening area of the other end of the through hole 32 is larger than the opening area of one end, and further, the opening of the other end is wider in the direction away from the second part 22b of the base 22 than the opening of the one end.

[0072] Furthermore, the connecting portion 30 has an inclined surface 30d on one side of the inner circumferential surface opposite the base portion 22, specifically, on one end portion, where the distance from the second portion 22b of the base portion 22 increases from one side to the other in the extension direction. Furthermore, the inner dimension of the one end portion of the connecting portion 30 is slightly larger than the outer diameter of the shaft portion 62.

[0073] Specifically, the connecting portion 30 of the second embodiment is composed of one tubular portion and the other tubular portion having different opening areas. Note that, in the connecting portion 30, as long as the opening area of the other end is larger than the opening area of the one end, the connecting portion 30 may be composed of three or more tubular portions.

[0074] Hereinafter, of the connecting portion 30, the rectangular tubular portion located at one end is referred to as a first connecting portion 30b, and the rectangular tubular portion located at the other end is referred to as a second connecting portion 30c.

[0075] The opening area of the through hole 32b of the first connecting portion 30b is smaller than the opening area of the through hole 32c of the second connecting portion 30c. The inner dimension of one end of the first connecting portion 30b is slightly larger than the outer diameter of the shaft portion 62.

[0076] Furthermore, the inner circumferential surface of the first connecting portion 30b on the side opposite the base 22 side is an inclined surface 30d in which the distance from the second portion 22b of the base 22 increases from one side to the other. Therefore, the opening area of the through hole 32b of the first connecting portion 30b continuously increases on the side opposite the base 22 side from one end to the other end of the first connecting portion 30b. In other words, the opening shape of the one end of the first connecting portion 30b is square, and the opening shape of the other end is rectangular.

[0077] The opening area of the through hole 32c of the second connecting portion 30c is larger than the opening area of the through hole 32b of the first connecting portion 30b. Furthermore, the opening of the second connecting portion 30c is wider on the side away from the second portion 22b of the base 22 than the opening of the first connecting portion 30b. In other words, the inner circumferential surface of the second connecting portion 30c on the side opposite the base 22 side is located on the opposite side from the base 22 side than the position of the inner circumferential surface of the first connecting portion 30b on the side opposite the base 22 side.

[0078] The inner peripheral surface of the second connecting portion 30c on the base 22 side and the inner peripheral surface of the first connecting portion 30b on the base 22 side are aligned in the extension direction of the connecting portion 30. In other words, the distance (wall thickness) between the outer peripheral surface and the inner peripheral surface on the base 22 side of the connecting portion 30 is constant. The wall thickness of the connecting portion 30 may also refer to the difference between the outer dimension and the inner dimension.

[0079] In addition, in the example shown in Figure 11, a cutout is made between the first connecting portion 30b and the second connecting portion 30c, and the through hole 32b of the first connecting portion 30b and the through hole 32c of the second connecting portion 30c are not connected to each other, but the through hole 32b and the through hole 32c may be connected to each other by connecting the first connecting portion 30b and the second connecting portion 30c.

[0080] 12 is a schematic cross-sectional view showing the configuration around the connecting portion 30 of the hand hook 10 of the second embodiment. According to the connecting portion 30 of the second embodiment, it is possible to tilt the shaft portion 62 with one side end as a fulcrum. Therefore, as shown in FIG. 12, the connecting portion 30 can pivotally support the shaft portion 62 so that the distance from the second portion 22b of the base 22 increases from one side end to the other side end.

[0081] Furthermore, when the connecting portion 30 supports the shaft portion 62 as shown in Figure 12, the shaft portion 62 is guided by the inclined surface 30d of the first connecting portion 30b to incline in a direction away from the second portion 22b of the base 22.

[0082] 12, when the shaft portion 62 is inclined, the shaft portion 62 does not come into uneven contact with the inside of the second connecting portion 30c. In other words, in this case, the shaft portion 62 does not come into uneven contact with the inside of the other end portion of the connecting portion 30.

[0083] Therefore, in the second embodiment of the hand hook 10, if the shaft portion 62 is pivotally supported on the connecting portion 30 in an inclined state as shown in FIG. 12 and this state is maintained, even if a force F1 is applied to the gripping portion 26 and sliding occurs against the biasing force of the elastic portion 80 of the connecting portion 30, it is possible to avoid one-sided contact between the inside of the other end portion of the connecting portion 30 and the shaft portion 62.

[0084] In other words, in the hand hook 10 of the second embodiment, if the shaft portion 62 is pivotally supported on the connecting portion 30 in an inclined state as shown in 12 and this state is maintained, even if a force F1 is applied to the gripping portion 26 and sliding occurs against the biasing force of the elastic portion 80 of the connecting portion 30, the connecting portion 30 and the shaft portion 62 can be prevented from locking with each other.

[0085] 5. Third embodiment The third embodiment is the same as the second embodiment except that a new configuration is added to the leg portion 60. Therefore, in the third embodiment, explanations that overlap with the second embodiment may be omitted. Figure 13 is a schematic cross-sectional view showing the configuration around the connecting portion 30 of the hand hook 10 of the third embodiment.

[0086] The leg portion 60 of the third embodiment further includes a washer 84. The washer 84 is a circular ring-shaped member and includes a through hole 86. The inner diameter of the washer 84 is slightly larger than the outer diameter of the shaft portion 62. The shaft portion 62 is inserted into the interior of the washer 84, i.e., into the through hole 86, and is also journaled by the washer 84.

[0087] The washer 84 is attached to one end of the elastic part 80, and is pressed against the other end of the connecting part 30, specifically, the other end face, by the biasing force of the elastic part 80. In the third embodiment, both the outer diameter and inner diameter of the elastic part 80 are larger than the inner diameter of the washer 84, and smaller than the outer diameter.

[0088] The outer diameter of washer 84 is larger than the outer dimensions of the connecting portion 30. Specifically, the outer diameter of washer 84 is larger than the outer dimensions of the other end of the connecting portion 30. Therefore, the outer peripheral edge of the other end face of the connecting portion 30 is located radially inward of the washer 84 relative to the outer peripheral edge of one end face of washer 84. In addition, the outer peripheral surface of washer 84 on the base 22 side abuts against the second portion 22b of the base 22.

[0089] Furthermore, the opening area of the through hole 86 of the washer 84 is smaller than the opening area of the through hole 32 of the connecting portion 30, and the opening edge of the washer 84 is located radially inward of the opening edge of the other end of the connecting portion 30.

[0090] For these reasons, the difference between the outer diameter and the inner diameter of washer 84 on the base 22 side is larger than the wall thickness of the connecting portion 30 on the base 22 side. Specifically, the difference between the outer diameter and the inner diameter of washer 84 on the base 22 side is larger than the wall thickness of the connecting portion 30 on the base 22 side of the other end portion. The difference between the outer diameter and the inner diameter of washer 84 on the base 22 side can also be considered as the radial thickness of washer 84 on the base 22 side. Furthermore, the wall thickness of the connecting portion 30 on the base 22 side of the other end portion can also be considered as the distance between the opening edge on the base 22 side of the connecting portion 30 on the other end side and the second portion 22b of the base 22.

[0091] A portion of the shaft portion 62 is journaled by the washer 84. If the difference between the outer diameter and inner diameter of the washer 84 on the base 22 side is greater than the thickness of the wall of the connecting portion 30 on the base 22 side, the degree of inclination of the shaft portion 62 increases as the difference between the outer diameter and inner diameter of the washer 84 on the base 22 side increases.

[0092] In the third embodiment, the shaft portion 62 is inclined in the same manner as the inner surface of the first connecting portion 30b opposite the base 22 side, and the difference between the outer diameter and the inner diameter of the washer 84 is set so that the shaft portion 62 does not make uneven contact with the inside of the second connecting portion 30c.

[0093] In the hand hook 10 of the third embodiment, the shaft portion 62 can be tilted with one side end of the connecting portion 30 as a fulcrum, and the shaft portion 62 is pivotally supported by a washer 84, thereby maintaining the tilted state.

[0094] Furthermore, since the shaft portion 62 is journaled on the washer 84, it is in partial contact with both the inside of the base 22 side at one end of the washer 84 and the inside of the opposite side to the base 22 side at the other end of the washer 84.

[0095] Because washer 84 is supported by elastic portion 80, it is able to absorb force from shaft portion 62. Furthermore, because washer 84 is able to swing to a certain extent relative to shaft portion 62 due to elastic portion 80, even if uneven contact occurs between washer 84 and shaft portion 62, washer 84 will not bite into shaft portion 62, and washer 84 can slidably support shaft portion 62 while eliminating uneven contact between washer 84 and shaft portion 62.

[0096] In the third embodiment, when a force F1 is applied to the gripping portion 26 and it slides against the biasing force of the elastic portion 80 of the connecting portion 30, a washer 84 is interposed between the second portion 22b of the base 22 and the shaft portion 62, so that uneven contact between the inside of the other end of the connecting portion 30 and the shaft portion 62 can be avoided.

[0097] Furthermore, when the connecting part 30 slides against the biasing force of the elastic part 80, a force acts on the washer 84 from one end to the other end of the shaft part 62. Furthermore, in such a case, a force acts on the washer 84 from the other end to one end of the shaft part 62 due to the biasing force of the elastic part 80.

[0098] 14 is a schematic cross-sectional view showing the configuration around the connecting part 30 of the hand hook 10 of the third embodiment. When various forces act on the washer 84 as the connecting part 30 slides against the biasing force of the elastic part 80, the washer 84 tilts in the same way as the shaft part 62, with the point where it makes one-sided contact with the shaft part 62 as a fulcrum. In other words, in this case, the one-sided contact between the shaft part 62 and the washer 84 is released.

[0099] In other words, when various forces act on the washer 84 as the connecting portion 30 slides against the spring force of the elastic portion 80, the washer 84 tilts in the same manner as the shaft portion 62, thereby dissipating the force that causes the connecting portion 30 to slide.

[0100] Furthermore, if the washer 84 tilts in the same way as the shaft portion 62 while sliding against the biasing force of the elastic portion 80 of the connecting portion 30, the biasing force of the elastic portion 80 will return the washer 84 to the state shown in Figure 13.

[0101] 13, the washer 84 tilts again as described above. That is, the washer 84 vibrates while sliding against the biasing force of the elastic portion 80 of the connecting portion 30.

[0102] For these reasons, in the third embodiment, washer 84 maintains the inclined state of shaft portion 62 and does not prevent sliding against the biasing force of elastic portion 80 of connecting portion 30. Therefore, washer 84 of the third embodiment can prevent connecting portion 30 and shaft portion 62 from locking together, even when force F1 is applied to grip portion 26 and sliding against the biasing force of elastic portion 80 of connecting portion 30 occurs.

[0103] 6. Fourth embodiment The fourth embodiment is the same as the first embodiment except that the configuration of the leg portion 60 is changed. Therefore, in the fourth embodiment, explanations that overlap with the first embodiment may be omitted. Figure 15 is a schematic diagram showing the configuration of the hand hook 10 of the fourth embodiment. Figure 15 also corresponds to Figure 2.

[0104] In the hand hook 10 of the fourth embodiment, the rotation mechanism 64 is omitted, and the other end of the shaft portion 62 is used as the abutment portion 70. In the fourth embodiment, the leg portion 60 further includes a flange portion 88.

[0105] The flange portion 88 is provided at the other end of the shaft portion 62 and protrudes radially outward from the shaft portion 62. The other end of the elastic portion 80 comes into contact with one surface of the flange portion 88, thereby fixing the position thereof.

[0106] When the rotation mechanism 64 is omitted from the hand hook 10 of the first embodiment, as shown in Figures 4 to 9, when engaging the claw portion 28 with the engaging portion 162 of the first receiving portion 152a, it is necessary to first insert the abutting portion 70 into the insertion port 156 of the loading medium 150 and engage the convex portion 76 of the abutting portion 70 with the engaging portion 162 of the second receiving portion 152b.

[0107] In the hand hook 10 of the fourth embodiment, the abutting portion 70 is the other end of the shaft portion 62 and has a simple structure. Therefore, according to the hand hook 10 of the fourth embodiment, the user can lock the abutting portion 70 into the concave and convex on the inside of the second receiving portion 152b simply by inserting the abutting portion 70 into the insertion port 156 of the loading medium 150. In other words, the user of the hand hook 10 can easily lock the abutting portion 70 into the concave and convex on the inside of the second receiving portion 152b.

[0108] Generally, the structure of the loading medium 150 may vary depending on the manufacturer or other source. For example, the spacing and size of the ribs 158 of the loading medium 150 may vary depending on the type. According to the hand hook 10 of the fourth embodiment, the contact portion 70 has a simple structure, making it highly versatile and capable of handling various types of loading medium 150.

[0109] 7. Fifth embodiment The fifth embodiment is the same as the first embodiment except that the configuration of the leg portion 60 is changed. Therefore, in the fifth embodiment, explanations that overlap with the first embodiment may be omitted. Figure 16 is a schematic diagram showing the configuration of the hand hook 10 of the fifth embodiment. Figure 16 also corresponds to Figure 2.

[0110] In the hand hook 10 of the fifth embodiment, the rotation mechanism 64 is omitted, and the contact part 70 is a rod-shaped member. The contact part 70 extends in a direction perpendicular to the extension direction of the shaft part 62, and is inserted into the other end part of the shaft part 62.

[0111] The contact portion 70 is prevented from falling off the shaft portion 62 by the fixing portion 90. Furthermore, the other end of the elastic portion 80 is fixed in position by contacting the fixing portion 90 or the contact portion 70.

[0112] For these reasons, the contact portion 70 of the fifth embodiment is rod-shaped and extends from the other end of the shaft portion 62, and the periphery of the other end of the shaft portion 62 is formed in a substantially T-shape.

[0113] The contact portion 70 of the fifth embodiment has a simple structure, but has a larger contact area with the second placed portion 152b than the contact portion 70 of the fourth embodiment. Therefore, when the hook portion 28 is engaged with the engaged portion 162 of the first placed portion 152a (see FIGS. 4 to 9), the user of the hand hook 10 can work with improved stability.

[0114] 8. Variations This concludes the description of the embodiments of the present invention, but the specific configurations shown in the present embodiments are merely examples, and the aspects of the present invention are not limited to the configurations shown in the respective embodiments. For example, the respective embodiments may be combined.

[0115] Furthermore, for example, in each embodiment, an example has been described in which the loading medium 150 is a pallet, but the loading medium 150 may also be any other loading medium capable of placing or storing cargo, such as a container box formed in a box shape from a material such as resin, wood, or metal that can store cargo.

[0116] Also, for example, if the hand hook 10 can be locked to the loading medium 150, the rotation mechanism 64 may be omitted from the first embodiment and the like.

[0117] Furthermore, for example, in the second and third embodiments, when the shaft portion 62 is inclined as shown in Fig. 12 etc., the thickness of the wall of the connecting portion 30 on the base portion 22 side may be smaller at the other end than at one end, as long as the shaft portion 62 does not come into uneven contact with the inside of the other end of the connecting portion 30. Also, for example, the connecting portion 30 may be cylindrical.

[0118] The present disclosure includes, for example, the following aspects. [1] A hook having a hook portion that engages with a loading medium and a leg portion that supports the hook portion, The hand hook portion is a rod-shaped base having a bent portion; a grip portion provided on one side of the bent portion at the base portion and adapted to be gripped by a user; a claw portion provided on the other side of the bending portion at the base portion, the claw portion being bent toward the gripping portion and capable of engaging with the loading medium; a connecting portion provided on the base portion on the other side of the bent portion and connecting the leg portion to the base portion, the base portion is bent at the bending portion so that the grip portion and the claw portion are close to each other, The leg portion is a shaft portion slidably supported on one side by the connecting portion; a contact portion provided on the other side of the shaft portion and capable of contacting the inside of the loading medium; and an elastic portion that biases the abutting portion in a direction that moves the abutting portion away from the connecting portion. [2] The connecting portion has a cylindrical shape that supports the shaft portion slidably inside, and the opening area of the other end is larger than the opening area of the one end.Furthermore, the opening of the other end is wider in the direction away from the base than the opening of the one end.At least a part of the inner surface opposite the base has an inclined surface that becomes farther from the base as it extends from one side to the other in the extension direction.The hand hook described in [1]. [3] the elastic portion is a coil spring through which the shaft portion is inserted, a washer having a through hole for inserting the shaft portion therethrough is attached to one end of the coil spring, and the other end of the coil spring is fixed at the other side of the shaft portion; The hand hook according to [2], wherein the opening area of the through hole of the washer is smaller than the opening area of the connecting portion. [4] The hand hook according to any one of [1] to [3], wherein the abutment portion is the other end portion of the shaft portion. [5] The hand hook according to any one of [1] to [3], wherein the abutment portion is rod-shaped and extends from the shaft portion. [6] The abutment portion is supported on the shaft portion so as to be rotatable around a rotation axis perpendicular to the extension direction of the shaft portion, and further has an abutment surface extending in a direction perpendicular to both the extension direction of the shaft portion and the rotation axis. A hand hook described in any one of [1] to [3]. [7] A hand hook described in any one of [1] to [6], wherein when both the claw portion and the abutment portion are engaged with the loading medium, the claw portion and the abutment portion are positioned in the same vertical direction, the abutment portion abuts against the inside of the floor plate of the loading medium, and the claw portion is engaged with the top plate of the loading medium. [Explanation of symbols]

[0119] 10 Hand hooks 20 Hand hook part 22 Base 24 Bend 26 Gripping part 28 Claw 30 Connecting part 30d slope 60 Legs 62 Shaft body 70 Contact part 72a Contact surface 80 Elastic part 84 Washer 150 Handling medium 152 Placement part

Claims

1. A hook having a hook portion that engages with a loading medium and a leg portion that supports the hook portion, The hand hook portion is a rod-shaped base having a bent portion; a grip portion provided on one side of the bent portion at the base portion and adapted to be gripped by a user; a claw portion provided on the other side of the bending portion at the base portion, the claw portion being bent toward the gripping portion and capable of engaging with the loading medium; a connecting portion provided on the base portion on the other side of the bent portion and connecting the leg portion to the base portion, the base portion is bent at the bending portion so that the grip portion and the claw portion are close to each other, The leg portion is a shaft portion slidably supported on one side by the connecting portion; a contact portion provided on the other side of the shaft portion and capable of contacting the inside of the loading medium; and an elastic portion that biases the abutting portion in a direction that moves the abutting portion away from the connecting portion.

2. The hand hook according to claim 1, wherein the connecting portion has a cylindrical shape that slidably supports the shaft portion therein, the opening area of the other end is larger than the opening area of the one end, and the opening of the other end is wider in a direction away from the base than the opening of the one end, and at least a part of the inner surface opposite the base has an inclined surface whose distance from the base increases as it goes from one side to the other in the extension direction.

3. the elastic portion is a coil spring through which the shaft portion is inserted, a washer having a through hole for inserting the shaft portion therethrough is attached to one end of the coil spring, and the other end of the coil spring is fixed at the other side of the shaft portion; The hand hook according to claim 2 , wherein an opening area of the through hole of the washer is smaller than an opening area of the connecting portion.

4. The hand hook according to claim 1 , wherein the abutting portion is the other end portion of the shaft portion.

5. The hand hook according to claim 1 , wherein the contact portion is a rod-like member extending from the shaft portion.

6. 2. The hand hook according to claim 1, wherein the abutment portion is supported by the shaft portion so as to be rotatable about a rotation axis in a direction perpendicular to the extension direction of the shaft portion, and further has an abutment surface extending in a direction perpendicular to both the extension direction of the shaft portion and the rotation axis.

7. A hand hook as described in any one of claims 1 to 6, wherein when both the claw portion and the abutment portion are engaged with the loading medium, the claw portion and the abutment portion are positioned in the same vertical direction, the abutment portion abuts against the inside of the floor plate of the loading medium, and the claw portion is engaged with the top plate of the loading medium.

Images