JP2005335901A - Hanging hook - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hanging hook embodied in a simple structure, capable of hanging down an object safely and easily. <P>SOLUTION: At the base end 27 of a hook member 12 a rotational fulcrum part 29 is provided, which is furnished at its peripheral surface with engaging grooves 35 mating with the close position and open position of the hook member 12. A hook supporting member 13 is furnished with a lock shaft 30 able to advance and retreat in the direction perpendicular to the rotating direction of the hook member 12 and to be engaged with the grooves 35 in the fulcrum part 29. In the close position and open position, the lock shaft 30 is engaged with the grooves 35 upon retreating, and in the middle between them, disengaged from the grooves 35 upon advancing. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hanging hook that can be suitably used for lifting a luggage.

As a hanging hook for suspending a load in a load lifting operation, the one shown in FIG. 8 is known. That is, in FIG. 8, the hanging hook 1 includes a hook member 2, an extraction preventing claw 3, and an eye 4. The hook member 2 has a substantially bowl shape, and an annular eye 4 for connecting a suspension member such as a wire is rotatably attached to a base end portion of the hook member 2.
When hanging the cargo 5 using the hanging hook 1, for example, two cargo handling ropes 6 are hung around the cargo 5 in parallel at a predetermined interval, and the two cargo handling ropes 6 are By inserting the hook member 2 into the insertion hole 7 formed at each end portion from the tip end portion, each end portion of the two cargo handling ropes 6 is hooked on the hook member 2.

  The pull-out preventing claw 3 has a base end portion hooked via a rotating shaft 8 in a state where the tip end portion thereof can be brought into contact with the tip end portion of the hook member 2 so as to close the opening portion of the hook member 2. The base 2 of the member 2 is swingably provided, and is always urged by a spring (not shown) in the push-up direction (closing direction) in which the tip end abuts against the tip end of the hook member 2. ing. As a result, the extraction preventing claw 3 always closes the opening of the hook member 2 by the biasing force of the spring and opens the opening of the hook member 2 only when pushed down against the biasing force of the spring. . Therefore, when each end of the cargo handling rope 6 is hooked on the hanging hook 1, the pull-out prevention claw 3 is pushed down against the urging force of the spring to open the opening of the hook member 2, and for cargo handling. Each end of the rope 6 may be received from the opening of the hook member 2. Then, after that, since the opening of the hook member 2 is always closed by the extraction preventing claw 3 by the biasing force of the spring, even if the end of the cargo handling rope 6 contacts the extraction preventing claw 3. The pull-out preventing claw 3 cannot be opened, and the load 5 can be safely hung in a state in which the end of the cargo handling rope 6 is well prevented from being pulled out from the hook member 2.

  However, when the cargo 5 is suspended using the hanging hook 1 as described above, in order to hook each end portion of the two cargo handling ropes 6 on the hook member 2, one end portion of the cargo handling rope 6 is hooked. Each time the hook 2 is to be hooked, the pull-out preventing claw 3 is pushed down, or the state in which the pull-out preventing claw 3 is pushed down and the end portions of the two cargo handling ropes 6 are continuously connected to the hook member. Need to be hooked to 2. As described above, since the extraction preventing claw 3 is urged in the closing direction, the extraction preventing claw 3 is pushed down many times against the urging force, or each end of the two cargo handling ropes 6 is pressed. Maintaining the pull-out prevention claw 3 in a state of being pushed down against the urging force until the hook member 2 is completely hooked is an operation that requires labor.

Therefore, for example, by using a lock mechanism such as that provided in the suspension hook disclosed in Patent Document 1, the hook member is rotatably attached to the hook support member that constitutes the extraction preventing claw, and the removal is performed. A close position close so that the end portion of the protrusion prevention claw and the tip end portion of the hook member are closed, and a separation position so that the end portion of the extraction prevention claw and the tip end portion of the hook member are opened. It can be considered that the hook member can be restricted from rotating at the open position. That is, a guide groove is formed in the hook member, and a support shaft provided separately from a rotation shaft that rotatably connects the hook support member and the hook member is inserted into the guide groove. The hook member is restricted at the closed position in a state where the support shaft is received in the closed recess formed in the one end, and the support shaft is received in the open recess formed in the other end of the guide groove. The hook member is restricted in the open position. According to such a configuration, each end of the cargo handling rope can be easily hooked on the hook member while the hook member is regulated in the open position, and then the hook member is rotated to be regulated in the closed position. By doing so, it is possible to prevent the end of the cargo handling rope from coming out of the hook member.
Japanese Patent No. 3327904

The suspension hook disclosed in Patent Document 1 is used for laying a laying iron plate and the like, and the hook member can be turned and rotated so that the hook member can be smoothly and reliably inserted into and pulled out from the laying iron plate. In order to make the moving range wider, the lock mechanism as described above is adopted.
However, a hanging hook used for a general luggage lifting work is smaller than a hanging hook used for a laying work of a laid iron plate, and a structure with a simplified structure is desired. If a configuration in which a guide groove and a support shaft inserted therethrough are provided as described above, there is a problem that the structure becomes complicated and the manufacturing cost increases.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a hanging hook that can safely and easily hang a load and that has a simplified structure. is there.

  In order to achieve the above-mentioned object, the invention according to claim 1 is provided with a hook support member having a connecting portion for connecting to a suspension member at a base end portion thereof, and a pivot shaft connected to the hook support member. In the suspension hook comprising a hook member that is rotatably supported, the hook member is between the tip end portion of the hook support member and the tip end portion of the hook member, with the pivot shaft as a center. It is configured to be rotatable to a closed position close to be closed, and an open position where the tip end portion of the hook support member and the tip end portion of the hook member are separated so as to be opened, The base end portion of the hook member includes a rotation fulcrum portion in which an insertion portion through which the rotation shaft is inserted is formed, and is detachably engaged with the rotation fulcrum portion, and the closed position and In the open position, the hook member has the hook. It is characterized in that it comprises a locking member for restricting the rotation relative to the support member.

  According to such a configuration, the rotation of the hook member relative to the hook support member can be restricted by engaging the lock member with the rotation fulcrum portion of the hook member in the closed position and the open position. Therefore, a configuration in which the hook member can be regulated in the closed position and the open position only by making the rotation fulcrum portion engageable with the lock member can be achieved, so that a guide groove and a support shaft inserted through the guide groove are provided. Compared with a simple configuration, the structure can be simplified.

  Further, since the lock member can restrict the rotation of the hook member with respect to the hook support member in the closed position and the open position, the end of the cargo handling rope can be connected to the hook member while the hook member is restricted in the open position. Can be easily hooked and removed, and the end of the cargo handling rope can be prevented from slipping out of the hook member by subsequently rotating the hook member and restricting it in the closed position.

Therefore, it is possible to provide a suspension hook that can safely and easily suspend a load and that has a simplified structure.
According to a second aspect of the present invention, the locking member includes a locking portion that is locked to the rotating fulcrum portion, and the outer peripheral surface of the rotating fulcrum portion is provided with the closed position and the open position. Correspondingly, a locking groove for locking the locking portion is formed.

According to such a configuration, it is possible to achieve a configuration in which the hook member can be regulated at the closed position and the open position only by forming locking grooves corresponding to the closed position and the open position on the outer peripheral surface of the rotation fulcrum portion. Therefore, the structure can be further simplified as compared with a configuration in which a guide groove and a support shaft inserted therethrough are provided.
According to a third aspect of the present invention, the lock member is provided to be movable forward and backward along a direction orthogonal to the rotation direction of the hook member with respect to the outer peripheral surface of the rotation fulcrum portion. In the closed position and the open position, the lock member is retracted to engage the lock portion with each lock groove, and the lock member is advanced between the closed position and the open position to advance the lock. It is characterized in that the locking of the locking portion with respect to each locking groove is released.

  According to such a configuration, in the closed position and the open position, the locking member can be locked in the locking groove by retreating the locking member, thereby restricting the rotation of the hook member with respect to the hook support member. By simply advancing the lock member from this state, it is possible to release the locking of the locking portion with respect to the locking groove and rotate the hook member. Therefore, the load can be suspended more easily.

According to a fourth aspect of the present invention, there is provided urging means for urging the lock member in a direction in which the lock member is retracted with respect to the rotation fulcrum, and the lock member is attached to the attachment portion in the closed position and the open position. The rotating fulcrum portion is retracted by the urging force of the urging means.
According to such a configuration, the lock member can be released against the urging force of the urging means, and the hook member can be unlocked and the hook member can be rotated only by advancing against the urging force of the urging means. In the closed position and the open position, the lock member can be retracted by the urging force of the urging means, and the rotation of the hook member with respect to the hook support member can be automatically restricted. Therefore, the load can be suspended more easily.

According to a fifth aspect of the present invention, a first protrusion projecting toward an inner space defined by the hook member and the hook support member at the closed position is provided at a distal end portion of the hook member; Two second protrusions protruding from both end faces in a direction orthogonal to the rotation direction of the hook member are provided.
According to such a configuration, it is effective that the end of the cargo handling rope hooked on the hook member is pulled out at the open position by the first protrusion and the two second protrusions provided at the tip of the hook member. Can be prevented.

  As described above, according to the first aspect of the present invention, the hook member can be regulated in the closed position and the open position only by making the rotation fulcrum portion engageable with the lock member. Therefore, the structure can be simplified as compared with a configuration in which a guide groove and a support shaft inserted through the guide groove are provided. In addition, the end of the cargo handling rope can be easily hooked or removed from the hook member while the hook member is regulated at the open position, and then the hook member is rotated and regulated at the closed position. Thereby, it can prevent that the edge part of the rope for cargo handling slips out from a hook member. Therefore, it is possible to provide a suspension hook that can safely and easily suspend a load and that has a simplified structure.

According to the second aspect of the present invention, the hook member can be regulated at the closed position and the open position only by forming the locking grooves corresponding to the closed position and the open position on the outer peripheral surface of the rotation fulcrum portion. Since the configuration can be achieved, the structure can be further simplified as compared with a configuration in which a guide groove and a support shaft inserted through the guide groove are provided.
According to the third aspect of the present invention, in the closed position and the open position, the lock member is retracted to lock the lock portion in the lock groove, thereby restricting the rotation of the hook member with respect to the hook support member. In addition, by simply advancing the lock member from this state, it is possible to release the engagement of the engagement portion with the engagement groove and rotate the hook member. Therefore, the load can be suspended more easily.

  According to the fourth aspect of the present invention, the locking member is released only against the urging force of the urging means, and the locking portion is released from the locking groove and the hook member is rotated. In addition, in the closed position and the open position, the lock member can be retracted by the urging force of the urging means, and the rotation of the hook member relative to the hook support member can be automatically restricted. Therefore, the load can be suspended more easily.

  According to the fifth aspect of the present invention, the end of the cargo handling rope hooked on the hook member is pulled out in the open position by the first protrusion and the two second protrusions provided at the tip of the hook member. Can be effectively prevented.

  FIG. 1 is a right side view of a state in which a hook member 12 is in a closed position, and FIG. 2 is a right side view of a state in which the hook member 12 is in an open position, showing an embodiment of a hanging hook 11 according to the present invention. 3 is a right side view of the hook member 12, FIG. 4 is a view of the hook member 12 viewed along the arrow A shown in FIG. 3, FIG. 5 is a right side view of the hook support member 13, and FIG. It is a rear view of a support member. 1 and 2, a part of the hanging hook 11 is shown in a sectional view. With reference to these FIG. 1 thru | or FIG. 6, the hanging hook 11 of this embodiment is demonstrated.

  In FIG. 1, this hanging hook 11 is used for, for example, hooking an end portion of a cargo handling rope hung around a load to lift the load, and hooking the end portion of the cargo handling rope. A member 12 and a hook support member 13 that rotatably supports the hook member 12 via a rotation shaft 14 are provided. As shown in FIG. 1, in the state where the hook member 12 is in the closed position, the inner surface of the hook member 12 is closed by the hook member 12 and the hook support member 13 and the length between the inner side surfaces of the hook member 12 is about 7 cm. A space 15 is formed.

As shown in FIGS. 1 to 4, the hook member 12 has a substantially bowl shape in a side view, and the tip end portion 16 is formed in a substantially circular shape or a substantially elliptical shape in cross section. The central portion 17 continuing to the tip portion 16 of the hook member 12 is formed in a substantially T-shaped cross section by forming a smooth recess 18 on the outer side of the left and right side surfaces (the side opposite to the inner space 15). ing.
A step portion 21 having a substantially rectangular shape in a side view is formed at a joint portion between the distal end surface 19 of the distal end portion 16 of the hook member 12 and the outer surface 20 (surface opposite to the inner space 15). The left and right side surfaces 22 of the tip end portion 16 of the hook member 12 protrude inwardly (inner space 15 side) from the stepped portion 21 in the left-right direction (direction perpendicular to the rotation direction of the hook member 12). A projection 23 is formed as a substantially cylindrical second projection. A connecting portion between the tip surface 19 and the inner surface 24 (the surface on the inner space 15 side) of the tip portion 16 is formed into a tapered shape by forming an inclined surface 25. On the base end side of the inclined surface 25, a protrusion 26 as a first protrusion having a substantially wedge shape in side view protruding toward the inner space 15 extends in the left-right direction.

  The base end portion 27 continuing to the central portion 17 of the hook member 12 is formed with a rotation fulcrum portion 29 in which an insertion portion 28 formed of a through hole penetrating the thickness direction through which the rotation shaft 14 is inserted is formed. ing. The rotation fulcrum portion 29 is formed in a substantially circular plate shape when viewed from the side. A part of the outer peripheral surface of the rotation fulcrum portion 29 receives a locking portion of a lock shaft 30 included in a lock mechanism 52 to be described later. A receiving groove 31 is formed to allow rotation of the hook support member 13 relative to the hook support member 13. As shown in FIG. 3, the receiving groove 31 is defined by a bottom surface 32 extending in a substantially arc shape around the same axis as the insertion portion 28, and a partition wall 33 erected from the right end of the bottom surface 32. A right inner surface 34 (see FIG. 7).

Locking grooves 35 for locking the locking portions of the lock shaft 30 are formed at both ends in the circumferential direction of the partition wall 33 corresponding to the closed position and the open position of the hook member 12, respectively. Each locking groove 35 is substantially arc-shaped, and has the same depth as the receiving groove 31 so that the bottom surface thereof is continuous with the bottom surface 32 of the receiving groove 31 in the left-right direction.
As shown in FIGS. 1, 2, 5, and 6, the hook support member 13 has a substantially square shape, and a base end portion (upper end portion) is hung with a wire from a crane, a link chain, or the like. An annular eye 36 for connecting the lowering member is rotatably attached. The eye 36 is bent in a substantially semicircular arc shape with a connecting portion 37 connected to the hook support member 13, and both ends thereof are rotatably attached to the upper end portion of the connecting portion 37 via a rotating shaft 38. And a rotating part 39. The base end portion of the hook support member 13 has a substantially cylindrical shape, and an annular recess 40 is formed on the outer peripheral surface along the circumferential direction. By covering the base end portion of the hook support member 13 with the connecting portion 37 of the eye 36 and arranging a plurality of balls 41 in the annular recess 40, the eye 36 can be rotated in the horizontal direction with respect to the hook support member 13. The wire attached to the eye 36 and the link chain can be turned back.

  The front end side (lower side) of the hook support member 13 having a substantially U shape has a shape in which the width in the left-right direction is tapered, and is between the front end portion 16 and the base end portion 27 of the hook member 12. It is set as the stopper part 43 for closing the opening part 42 formed by. Further, as shown in FIG. 6, an insertion portion 44 for inserting the hook member 12 is formed in a slit shape (substantially rectangular shape) along the longitudinal direction at the center portion in the width direction (left-right direction) of the hook support member 13. An opening is formed in the. The hook support member 13 includes a right side plate portion 45 that defines the right inner surface of the insertion portion 44 and a left side plate portion 46 that defines the left inner surface of the insertion portion 44.

  In the right side plate portion 45 and the left side plate portion 46 of the hook support member 13, rotation shaft insertion holes 47 and 48 for inserting the rotation shaft 14 are formed in the upper portion, and the lock shaft 30 is inserted in the lower portion. Lock shaft insertion holes 49 and 50 are formed. The rotation shaft insertion holes 47 and 48 formed in the right side plate portion 45 and the left side plate portion 46 of the hook support member 13 have the same inner diameter corresponding to the outer diameter of the rotation shaft 14. On the other hand, the lock shaft insertion hole 50 formed in the left side plate portion 46 of the hook support member 13 has a larger diameter than the lock shaft insertion hole 49 formed in the right side plate portion 45.

  Then, the rotation fulcrum portion 29 of the hook member 12 is inserted into the insertion portion 44 of the hook support member 13, and the insertion portion 28 of the hook member 12 and the rotation shaft insertion holes 47 and 48 of the hook support member 13 are positioned. In the combined state, the rotation shaft 14 is inserted into the insertion portion 28 and the rotation shaft insertion holes 47 and 48, and the rotation shaft 14 is fixed to the hook support member 13, whereby the hook member 12 is attached to the hook support member 13. On the other hand, it is supported so as to be rotatable about the rotation shaft 14. Although not shown in the drawings, a known fixing method using a snap ring, a pin, or the like can be adopted as a method for fixing the rotating shaft 14 in the hook support member 13.

  As shown in FIG. 1, the hook member 12 has the tip end portion of the stopper portion 43 of the hook support member 13 closest to the tip portion 16 of the hook member 12 and the opening portion of the hook member 12. By closing 42, the closed position where the inner space 15 is formed by the hook member 12 and the hook support member 13, and the tip of the stopper portion 43 of the hook support member 13 as shown in FIG. It is possible to rotate between the open end position where the opening portion 42 of the hook member 12 is opened and the furthest away from the 12 tip portions 16.

  A concave portion 51 having a shape corresponding to the distal end portion 16 of the hook member 12 is formed on the inner surface (surface on the inner space 15 side) of the distal end portion of the stopper portion 43 of the hook support member 13 so that the hook member 12 is in the closed position. In this state, the tip of the hook member 12 enters the recess 51 of the hook support member 13, and the outer side (opposite side of the inner space 15) of the tip of the hook support member 13 is the stepped portion of the hook member 12. 21. In the closed position, the protrusions 23 formed on the left and right side surfaces 22 of the tip portion 16 of the hook member 12 abut against the opening edge of the recess 51 of the hook support member 13, so that the tip of the hook member 12 and the hook support member are The tip of 13 is not in contact with the inner surfaces of the recesses 51 and 21 facing each other.

FIG. 7 is a front sectional view of the hanging hook 11 in the vicinity of the lock mechanism 52.
As shown in FIG. 7, the suspension hook 11 is provided with a lock mechanism 52 for restricting the rotation of the hook member 12 relative to the hook support member 13 in the closed position and the open position. The lock mechanism 52 includes a lock shaft 30 as a lock member and a spring 53 as an urging means. The lock shaft 30 is inserted into the lock shaft insertion holes 49 and 50 of the hook support member 12, and can advance and retreat in the axial direction (direction orthogonal to the rotation direction of the hook member 12).

  The lock shaft 30 includes a small-diameter shaft portion 54 that fits along the axial direction of the lock shaft insertion hole 49 of the right side plate portion 45 of the hook support member 13, and a medium-diameter shaft portion having a larger diameter than the small-diameter shaft portion 54. 55 and a large-diameter shaft portion 56 that is larger in diameter than the medium-diameter shaft portion 55 and that engages with the lock shaft insertion hole 50 of the left side plate portion 46 of the hook support member 13 in the axial direction. Is formed. The large diameter shaft portion 56 has a length slightly shorter than the distance from the left side surface of the left side plate portion 46 to the right inner side surface 34 of the receiving groove 31. The small-diameter shaft portion 54 has a length longer than the distance from the right side surface of the right side plate portion 45 to the center of the locking groove 35 in the left-right direction. . In addition, a substantially cylindrical recess 57 that receives the spring 53 is formed in the left end surface of the large-diameter shaft portion 56 (the end surface opposite to the medium-diameter shaft portion 55) along the axial direction.

  The lock mechanism 52 inserts the small-diameter shaft portion 54 of the lock shaft 30 into the lock shaft insertion hole 49 of the right plate portion 45 from the left plate portion 46 side toward the right plate portion 45 side. A state in which the spring 53 is compressed by the pressing plate 58 by inserting the spring 53 into the concave portion 57 of the 30 and fitting the pressing plate 58 so as to cover the left end portion of the lock shaft insertion hole 50 of the left side plate portion 46. And it is assembled. As a result, the lock shaft 30 is urged by the spring 53 toward the retracting direction (right direction).

  In the state where the hook member 12 is in the closed position as shown in FIG. 1, the locking groove 35 substantially coincides with the lock shaft insertion hole 50 of the left side plate portion 46, as shown in FIG. 7 (a). The lock shaft 30 is retracted by the urging force of the spring 53, the right end portion of the large diameter shaft portion 56 enters the locking groove 35, and the step portion between the medium diameter shaft portion 55 and the small diameter shaft portion 54 is formed on the right side plate. The lock shaft insertion hole 49 of the portion 45 comes into contact with the left end edge portion. In this state, the large-diameter shaft portion 56 of the lock shaft 30 is caught in the locking groove 35, and the rotation of the hook member 12 with respect to the hook support member 13 is restricted.

  In order to release such restriction and rotate the hook member 12 with respect to the hook support member 13, the small-diameter shaft portion 54 is locked by pressing it to the left against the urging force of the spring 53. The shaft 30 may be advanced and the hook member 12 may be rotated. That is, when the small-diameter shaft portion 54 is pressed against the urging force of the spring 53, the right end portion of the large-diameter shaft portion 56 is retracted from the locking groove 35 as shown in FIG. To be accepted. Thereby, the rotation of the hook member 12 with respect to the hook support member 13 is allowed, and if the hook member 12 is rotated with respect to the hook support member 13 as it is, the bottom surface 32 of the receiving groove 31 becomes the lock shaft 30 (large diameter). Will be moved along the shaft 56).

  When the hook member 12 is between the closed position and the open position, even if the pressure on the lock shaft 30 is released, as shown in FIG. 7B, the large-diameter shaft portion 56 and the medium-diameter shaft portion 55 The step portion is in contact with the right inner side surface 34 of the receiving groove 31 (left side surface of the partition wall 33), and the lock shaft 30 is maintained in the advanced state. Then, if the hook member 12 is rotated to the open position as shown in FIG. 2, the locking groove 35 again coincides with the lock shaft insertion hole 50 of the left side plate portion 46, so that FIG. As shown, the lock shaft 30 is retracted by the biasing force of the spring 53, the right end portion of the large diameter shaft portion 56 enters the locking groove 35, and the step portion between the medium diameter shaft portion 55 and the small diameter shaft portion 54 is shown. However, it will be in the state contact | abutted to the left end edge part of the lock shaft insertion hole 49 of the right side board part 45. FIG. In this state, the large-diameter shaft portion 56 of the lock shaft 30 is caught in the locking groove 35, and the rotation of the hook member 12 with respect to the hook support member 13 is restricted.

  When suspending a load using the suspension hook 11, as shown in FIG. 2, the opening 42 is opened in a state where the hook member 12 is restricted at the open position, and the cargo handling rope 59 hung around the load is removed. By inserting the hook member 12 into the insertion hole formed at the end from the tip, the end of the cargo handling rope 59 is hooked on the hook member 12. After the end of the cargo handling rope 59 is hooked on the hook member 12, as described above, the lock shaft 30 is pressed against the urging force of the spring 53, and the hook member 12 is rotated to close it. Between the position and the open position, as shown in FIG. 7B, the step portion between the large diameter shaft portion 56 and the medium diameter shaft portion 55 is in contact with the right inner side surface 34 of the receiving groove 31. . In this state, since the lock shaft 30 is maintained in the advanced state, the hook support member is slidably brought into contact with the right inner side surface 34 of the receiving groove 31 while the step portion between the large-diameter shaft portion 56 and the medium-diameter shaft portion 55 is brought into contact. The hook member 12 can be rotated with respect to 13. Thereafter, in the closed position, the lock shaft 30 is retracted by the biasing force of the spring 53, and the right end portion of the large-diameter shaft portion 56 enters the locking groove 35, whereby the hook member 12 is rotated with respect to the hook support member 13. It is regulated automatically, and the end of the cargo handling rope 59 can be prevented from coming off from the hook member 12.

  In such a hanging hook 11, the rotation of the hook member 12 relative to the hook support member 13 is restricted by engaging the lock shaft 30 with the rotation fulcrum 29 of the hook member 12 in the closed position and the open position. Can do. Accordingly, the hook member 12 can be regulated in the closed position and the open position only by making the rotation fulcrum 29 engageable with the lock shaft 30, so that the guide shaft and the support shaft inserted through the guide groove can be achieved. The structure can be simplified as compared with the configuration in which the is provided.

  Further, since the lock shaft 30 can restrict the rotation of the hook member 12 with respect to the hook support member 13 in the closed position and the open position, the hook rope 12 can be restricted in the open position. The end portion can be easily hooked and removed from the hook member 12, and the hook member 12 is then rotated and regulated in the closed position, whereby the end portion of the cargo handling rope 59 is removed from the hook member 12. It can be prevented from coming out.

Therefore, it is possible to provide the suspension hook 11 that can safely and easily suspend a load and that has a simplified structure.
In particular, since the hook member 12 can be regulated at the closed position and the open position only by forming the locking grooves 35 corresponding to the closed position and the open position on the outer peripheral surface of the rotation fulcrum portion 29, the configuration can be achieved. Compared with a configuration in which a guide groove or a support shaft inserted through the guide groove is provided, the structure can be further simplified.

  In the closed position and the open position, by retracting the lock shaft 30, the lock shaft 30 can be locked in the locking groove 35 to restrict the rotation of the hook member 12 relative to the hook support member 13, and By simply moving the lock shaft 30 from this state, the lock member 30 can be unlocked from the lock groove 35 and the hook member 12 can be rotated. Therefore, the load can be suspended more easily.

  In addition, the lock shaft 30 can be released from the locking groove 35 by simply moving the lock shaft 30 against the urging force of the spring 53, so that the hook member 12 can be rotated, and the closed position In the open position, the lock shaft 30 can be retracted by the urging force of the spring 53 and the rotation of the hook member 12 with respect to the hook support member 13 can be automatically restricted, so that the load can be suspended more easily. it can. Therefore, for example, when sequentially inserting the insertion holes of the plurality of cargo handling ropes 59 into the tip end portion of the hook member 12, the hook member 12 is simply positioned at the open position with respect to the hook support member 13, and at the open position, Since the rotation of the hook member 12 with respect to the hook support member 13 is restricted, the hook member 12 is hooked in order to secure the opening 42 every time an attempt is made to hook the cargo handling rope 59 on the tip end portion of the hook member 12. There is no need to rotate the support member 13 and position it in the open position, and the hooking operation on the hook member 12 can be made more efficient. In this hooking operation, the hanging hook 11 has a protrusion 26 formed on the inclined surface 25 of the front end portion 16 of the hook member 12 and 2 formed on the left and right side surfaces 22 of the front end portion 16 of the hook member 12. The two protrusions 23 can effectively prevent the end of the cargo handling rope 59 hooked on the hook member 12 from coming off in the open position.

On the other hand, after the cargo handling rope 59 is hooked, as described above, the hook member 12 is rotated with respect to the hook support member 13 and is located at the closed position. Since the rotation with respect to the support member 13 is restricted, it is possible to reliably prevent the cargo handling rope 59 from coming out of the tip end portion of the hook member 12.
Therefore, it is possible to suspend a load safely and easily.

Note that the lock member for restricting the rotation of the hook member 12 relative to the hook support member 13 by engaging with the rotation fulcrum 29 of the hook member 12 is not limited to the lock shaft 30, and for example, a hook, a pin, or the like can be used. It may be included.
Further, not only the eye 36 but also a small hook or other hanging member can be attached to the tip of the hook support member 13.

It is a right view in the state where a hook member is in a closed position showing one embodiment of a hanging hook of the present invention. It is a right view in the state where a hook member exists in an open position. It is a right view of a hook member. It is the figure which looked at the hook member along the arrow A shown in FIG. It is a right view of a hook support member. It is a rear view of a hook support member. It is front sectional drawing of the hanging hook in the vicinity of a locking mechanism, (a) is the state which the lock shaft retracted, (b) has shown the state which the lock shaft advanced. It is explanatory drawing which shows the lifting operation | work of the load using the conventional hanging hook.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Suspension hook 12 Hook member 13 Hook support member 14 Rotating shaft 15 Inner space 23 Protrusion (2nd protrusion)
26 Protrusion (first protrusion)
28 Inserting portion 29 Rotating fulcrum portion 30 Lock shaft 35 Locking groove 53 Spring (biasing means)
55 Medium-diameter shaft (locking part)

Claims (5)

A suspension hook comprising a hook support member provided with a connecting portion for connecting to a suspension member at a base end portion thereof, and a hook member supported rotatably on the hook support member via a rotation shaft. ,
The hook member is centered on the rotation axis,
A closed position in which the tip of the hook support member and the tip of the hook member are close so as to be closed;
The front end portion of the hook support member and the front end portion of the hook member are configured to be rotatable to an open position that is separated so as to be opened,
The proximal end portion of the hook member includes a rotation fulcrum portion in which an insertion portion through which the rotation shaft is inserted is formed,
A lock member is provided that is detachably engaged with the rotation fulcrum and restricts the rotation of the hook member relative to the hook support member at the closed position and the open position. A hanging hook. The lock member includes a locking portion locked to the rotation fulcrum portion,
2. A locking groove for locking the locking portion is formed on the outer peripheral surface of the rotation fulcrum portion, corresponding to the closed position and the open position, respectively. Hanging hook described in. The lock member is provided to be movable forward and backward along a direction orthogonal to the rotation direction of the hook member with respect to the outer peripheral surface of the rotation fulcrum portion.
The locking member is
In the closed position and the open position, by retraction, the locking portions are engaged with the locking grooves,
The suspension hook according to claim 2, wherein the locking of the locking portion with respect to each locking groove is released by advancement between the closed position and the open position. An urging means for urging the lock member in a direction to retract the rotation fulcrum;
The suspension hook according to claim 3, wherein the lock member is retracted from the rotation fulcrum portion by the urging force of the urging means in the closed position and the open position. At the tip of the hook member,
A first protrusion that protrudes toward the inner space defined by the hook member and the hook support member in the closed position;
The suspension hook according to any one of claims 1 to 4, further comprising two second protrusions respectively protruding from both end faces in a direction orthogonal to the rotation direction of the hook member.

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