JP2007223762A - Suspension hook - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suspension hook capable of regulating turn of a hook member at respective optimum degrees of engagement at a closed position and an open position by a simple structure. <P>SOLUTION: This suspension hook is provided with a first lock mechanism 52 for regulating turn of the hook member 12 at the closed position by engaging a lock shaft 30 with a locking channel 35 formed in a turn fulcrum part 29 of the hook member 12 so as to advance and retract freely and a second lock mechanism 60 for regulating turn of the hook member 12 at the open position by engaging a locking ball 64 with a shallow hole 61 formed in the turn fulcrum part 29 so as to advance and retract freely. Consequently, degrees of regulation of turn of the hook member 12 at the closed position and the open position are made the optimum, respectively, the locking ball 64 is retracted from the shallow hole 61 when lifting a load while the hook member 12 is at the open position, and regulation of turn of the hook member 12 by the second lock mechanism 60 is released to turn the hook member 12 up to the closed position automatically. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hanging hook that can be suitably used when hanging a load.

As a hanging hook for suspending a load in a work for suspending a load, for example, one disclosed in Patent Document 1 is known. In this suspension hook, a pivot fulcrum is provided at the base end of the hook member, and the outer peripheral surface of the pivot fulcrum is associated with a closed position and an open position of the hook member. Stop grooves are respectively formed. Further, in this suspension hook, the hook support member is provided with a lock shaft that can advance and retract along the direction orthogonal to the rotation direction of the hook member and can be locked in the locking groove of the rotation fulcrum. Yes. In the closed position and the open position, the lock shaft is engaged with the locking groove by retraction, and between the closed position and the open position, the lock shaft is released from being locked.
JP 2005-335901 A

  In the suspension hook described in Patent Document 1, the above-described locking grooves are formed in the same rotation fulcrum according to the closed position and the open position, respectively, and one locking shaft is provided in these locking grooves. By engaging, the rotation of the hook member in the closed position and the open position is restricted. Therefore, the degree of engagement of the lock shaft with the respective locking grooves in the closed position and the open position, that is, the degree of restriction of the rotation of the hook member in the closed position and the open position is the same. In other words, in the suspension hook described in Patent Document 1, the degree of restriction of the rotation of the hook member cannot be set to the optimum degree of engagement in the closed position and the open position, respectively.

  For example, the degree of engagement of the lock shaft in the closed position is increased for safety to prevent unnecessary rotation of the hook member that leads to the removal of the cargo handling rope, and the lock shaft is engaged in the open position. The degree of engagement of the lock shaft with respect to the locking groove depends on the user's application so that the degree of engagement is weaker than the degree of engagement at the closed position so that the hook member rotates when a predetermined condition is satisfied. It is desirable that the degree of combination can be optimized according to the closed position and the open position.

In addition, since the hanging hook may be handled relatively roughly for the purpose of hanging a load, it is desirable that the hanging hook has a simple structure.
The object of the present invention has been made in view of such circumstances, and the object of the present invention is to rotate the hook member with a simple configuration and at an optimum degree of engagement in the closed position and the open position, respectively. It is an object of the present invention to provide a suspension hook that can restrict movement and can suspend a load safely and easily.

  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. A hanging hook that is rotatably supported and includes a hook member that is capable of hooking a load directly or via a hooked member, wherein the hook member is centered on the pivot shaft and the hook support member. A close position close to the front end of the hook member and the front end of the hook member, and a distance between the front end of the hook support member and the front end of the hook member. The hook member is configured to be pivotable to an open position, and a base end portion of the hook member includes a pivot fulcrum portion in which an insertion portion through which the pivot shaft is inserted is formed. Engageably engage with the pivot point and A first lock member for restricting rotation of the hook member relative to the hook support member; and in the open position, the hook member is detachably engaged with the rotation fulcrum and is engaged with the hook support member. A second lock member independent of the first lock member for restricting the rotation is provided.

  According to such a configuration, in the closed position, the rotation of the hook member relative to the hook support member can be restricted by engaging the first lock member alone with the rotation fulcrum portion of the hook member. On the other hand, in the open position, the second lock member independent of the first lock member can be independently engaged with the rotation fulcrum portion of the hook member, thereby restricting the rotation of the hook member relative to the hook support member. it can.

Therefore, the hook member can be rotated at an optimum degree of engagement at the closed position and the open position by a simple configuration in which different lock members are engaged with the rotation fulcrum according to the closed position and the open position. Can be regulated.
Accordingly, for example, when the degree of engagement of the first lock member in the closed position is relatively increased, the degree of restriction of the rotation of the hook member with respect to the hook support member is also increased. It is possible to prevent the part to be attached from being accidentally pulled out. On the other hand, if the degree of engagement of the second lock member in the open position is relatively weak, for example, when the load is not hung on the hook member, the rotation of the hook member relative to the hook support member is restricted, and The hooking member or the hooked portion of the load can be easily hooked or removed from the hook member. When the hook member is lifted slightly while the hook member is in the open position, the second lock member is automatically engaged. It is released and the hook member can be rotated from the open position to the closed position. Therefore, the operator is released from the work of manually releasing the engagement of the second lock member and rotating the hook member to the closed position.

Since the rotation fulcrum portion can be configured to be engageable with the first lock member and the second lock member, a configuration capable of restricting the rotation of the hook member in the closed position and the open position can be achieved. The suspension hook can be simplified as compared with a configuration in which parts engaged with the first lock member and the second lock member are provided separately from the rotation fulcrum portion.
Therefore, it is possible to suspend a load safely and easily with a suspension hook having a simple configuration.

  According to a second aspect of the present invention, in the first aspect of the invention, the first lock member includes a first locking portion that is locked to the rotation fulcrum portion, and an outer periphery of the rotation fulcrum portion. A first locking groove for locking the first locking portion corresponding to the closed position is formed on the surface, and the second locking member is locked to the rotating fulcrum portion. A second locking groove for locking the second locking portion corresponding to the open position is formed on the outer peripheral surface of the rotation fulcrum portion. .

  According to such a configuration, the rotation fulcrum has a simple configuration in which the first locking groove corresponding to the closed position and the second locking groove corresponding to the open position are formed on the outer peripheral surface of the rotation fulcrum portion. The first lock member and the second lock member can be independently engaged with the portion in accordance with the closed position and the open position, respectively. Further, the suspension hook can be simplified as compared with a configuration in which parts engaged with the first lock member and the second lock member are provided separately from the rotation fulcrum portion.

  According to a third aspect of the present invention, in the second aspect of the present invention, the first locking portion is arranged along an axial direction of the rotation direction of the hook member with respect to an outer peripheral surface of the rotation fulcrum portion. The second locking portion is provided so as to be movable back and forth along the radial direction of the rotation direction of the hook member with respect to the outer peripheral surface of the rotation fulcrum portion. In the closed position, the first locking portion advances to the rotation fulcrum and is locked in the first locking groove, and in the open position, the second locking portion is rotated in the rotation position. The first locking portion and the second locking portion are moved to the moving fulcrum portion and locked in the second locking groove, and between the closed position and the open position, the rotating fulcrum Retreating from the portion, and locking the first locking portion with respect to the first locking groove and against the second locking groove of the second locking portion. Is characterized in that locking is released.

  According to such a configuration, in the closed position, the first locking portion advances to the rotation fulcrum along the axial direction of the rotation direction of the hook member and is reliably locked in the first locking groove. By doing so, the degree of restriction of the rotation of the hook member can be made relatively strong. Further, in this state, the hook member can be rotated by releasing the locking of the first locking portion with respect to the first locking groove only by retracting the first locking portion from the rotation fulcrum portion.

  Further, in the open position, the second locking portion advances to the rotation fulcrum portion along the radial direction of the hook member rotation direction and is locked to the second locking groove, whereby the hook member The degree of restriction of rotation can be made relatively weak. That is, for example, when the load is lifted with the hook member in the open position, the vertical load of the load is more likely to be applied in the radial direction than the axial direction of the rotation direction of the hook member. It is retracted from the moving fulcrum portion, and the locking of the second locking portion with respect to the second locking groove is easily released.

Therefore, the degree of restriction of the rotation of the hook member in the closed position and the open position can be optimized with a simple configuration.
According to a fourth aspect of the present invention, in the third aspect of the present invention, the first locking member biases the first locking member in a direction to advance the first locking portion toward the rotation fulcrum portion. The second locking member includes second urging means for urging the second locking portion in a direction to advance the rotating fulcrum portion, and in the closed position, the first locking portion. Is advanced to the turning fulcrum by the urging force of the first urging means, and in the open position, the second locking part is moved by the urging force of the second urging means. It is characterized by being advanced to.

  According to such a configuration, in the closed position, the first locking portion is advanced to the rotation fulcrum portion by the biasing force of the first biasing means, so that the first locking portion becomes the first locking groove. It is locked and the rotation of the hook member can be automatically regulated. On the other hand, the first locking portion is released from the rotation fulcrum portion against the urging force of the first urging means, and the locking of the first locking portion with respect to the first locking groove is released. The member can be rotated.

  In the open position, the second locking portion is advanced to the rotation fulcrum by the biasing force of the second biasing means, so that the second locking portion is locked in the second locking groove, and the hook The rotation of the member can be automatically regulated. On the other hand, the second locking portion is released from the rotation fulcrum portion against the urging force of the second urging means, and the locking of the second locking portion with respect to the second locking groove is released. The member can be rotated. Then, by adjusting the urging force of the second urging means, the degree of restriction of the rotation of the hook member at the open position can be adjusted.

Therefore, the degree of restriction of the rotation of the hook member in the closed position and the open position can be optimized with simple configurations such as the first urging means and the second urging means.
According to a fifth aspect of the present invention, in the invention according to the fourth aspect of the present invention, when the hook member receives a predetermined vertical load at the open position, the second locking portion is attached to the second urging means. It retracts from the rotation fulcrum portion against the force, and the second locking portion is unlocked from the second locking groove and rotated to the closed position.

  According to such a configuration, a predetermined vertical load is applied after hooking the hooked member or the hooked portion of the load on the hook member in the open position, for example, when lifting the load a little in this state, The second locking portion retracts against the urging force of the second urging means, the locking of the second locking portion with respect to the second locking groove is automatically released, and the hook member is moved from the open position to the closed position. Rotate until This allows the hook member to automatically rotate to the closed position when the load is lifted up slightly even if the hook member that hooks the hooked member or the hooked portion of the load remains in the open position. The operator can manually unlock the second locking portion with respect to the second locking groove before lifting the load and remove the hook member on which the hooked member or the hooked portion of the baggage is hooked. It is freed from the work of rotating to the closed position, and the load can be easily suspended.

  The invention according to claim 6 is supported at the base end portion thereof by a hook supporting member having a connecting portion for connecting to a suspension member, and rotatably supported by the hook supporting member via a rotating shaft, A hanging hook comprising a hook member capable of hooking a load directly or via a hooked member, wherein the hook member is centered on the rotating shaft and the tip of the hook support member and the hook member It is possible to rotate between a close position close so that the front end of the hook is closed and an open position separated so that the front end of the hook support member and the front end of the hook member are open. 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 engaged with and disengaged from the rotation fulcrum portion in the open position. The hook support of the hook member is engaged freely. A second lock member for restricting rotation relative to the member, wherein the second lock member is movable forward and backward along a radial direction of the hook member with respect to an outer peripheral surface of the rotation fulcrum portion; Provided with a second locking portion locked to the rotation fulcrum portion, and a second urging means for urging the second locking portion in a direction to advance to the rotation fulcrum portion, A second locking groove for locking the second locking portion is formed on the outer peripheral surface of the rotation fulcrum portion corresponding to the open position.

According to such a configuration, in the open position, the second locking portion of the second lock member is engaged with the second locking groove formed on the outer peripheral surface of the rotation fulcrum portion by the biasing force of the second biasing means. By being stopped, the rotation of the hook member can be automatically restricted.
On the other hand, the second locking portion is released from the rotation fulcrum portion against the urging force of the second urging means, and the locking of the second locking portion with respect to the second locking groove is released. The member can be rotated.

Therefore, by adjusting the urging force of the second urging means, the degree of restriction of the rotation of the hook member at the open position can be adjusted.
Further, since the second locking portion can advance and retreat along the radial direction of the rotation direction of the hook member with respect to the outer peripheral surface of the rotation fulcrum portion, the degree of restriction of the rotation of the hook member in the open position Can be made relatively weak. That is, for example, if the load is lifted while the hook member is in the open position, the vertical load of the load is relatively likely to act in the radial direction of the rotation direction of the hook member, so the second locking portion rotates. Retracted from the fulcrum part, the second locking part is easily released from the second locking groove.

  Therefore, the degree of restriction of the rotation of the hook member in the open position can be adjusted with a simple configuration.

According to the first aspect of the present invention, the rotation of the hook member can be restricted with the optimum degree of engagement in the closed position and the open position, respectively, with a simple configuration. Moreover, it is possible to suspend a load safely and easily with a suspension hook having a simple configuration.
According to the second aspect of the present invention, the first lock member and the second lock member can be independently engaged with the rotation fulcrum portion according to the closed position and the open position with a simple configuration. it can. Further, the suspension hook can be simplified as compared with a configuration in which parts engaged with the first lock member and the second lock member are provided separately from the rotation fulcrum portion.

According to the invention described in claim 3, the degree of restriction of the rotation of the hook member in the closed position and the open position can be optimized with a simple configuration.
According to the invention described in claim 4, the degree of restriction of the rotation of the hook member in the closed position and the open position can be optimized with a simple configuration.
According to the fifth aspect of the present invention, the load can be easily suspended.

  According to the sixth aspect of the present invention, the degree of restriction of the rotation of the hook member at the open position can be adjusted with a simple configuration.

1. FIG. 1 shows an embodiment of a hanging hook according to the present invention. FIG. 1A is a right side view of a state in which a hook member is in a closed position, and FIG. FIG. 2A is a right side view of the hanging hook of FIG. 1 in a state where the hook member is in an open position, and FIG. 2B is a right side sectional view of an enlarged main part in FIG. In addition, in FIG. 1 (a) and FIG. 2 (a), a part of suspension hook is shown with sectional drawing. In FIG. 1A, the left side of the paper is the front side (front side), the right side of the paper side is the rear side (back side), the front side of the paper surface is the right side, and the back side of the paper surface is the left side.

3 is a right side view of the hook member, FIG. 4 is a view of the hook member viewed along the arrow A shown in FIG. 3, FIG. 5 is a right side view of the hook support member, and FIG. 6 is a hook support member. FIG. FIG. 7 is a front cross-sectional view of the suspension hook in the vicinity of the first lock mechanism, where (a) shows a state in which the lock shaft has advanced, and (b) shows a state in which the lock shaft has been retracted.
In FIG. 1 (a), this suspension hook 11 is used, for example, to hang an end of a cargo handling rope hung around a load and lift the load. A hook member 12 for hooking, a hook support member 13 for rotatably supporting the hook member 12 via a rotation shaft 14, and a first lock for restricting the rotation of the hook member 12 at a closed position described later. A first lock mechanism 52 as a member and a second lock mechanism 60 as a second lock member for restricting the rotation of the hook member 12 at an open position to be described later are provided. In the state where the hook member 12 is in the closed position in the hanging hook 11, an inner space 15 having a substantially bowl shape in side view is formed inside the hook member 12 and the hook support member 13.
(1) Hook Member The hook member 12 has a substantially bowl shape in side view as shown in FIGS. 1 to 3, and the tip portion 16 has a substantially circular shape in cross section or a cross section view as shown in FIG. It is formed in an elliptical shape. As shown in FIG. 1A, the central portion 17 continuous with the tip portion 16 of the hook member 12 is formed with a smooth recess 18 on the outer side (the side opposite to the inner space 15). As shown, the cross section is formed in a substantially T shape.

  As shown in FIG. 1A, 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). Is formed. As shown in FIG. 4, substantially cylindrical projections 23 projecting in the left-right direction are formed on the left and right side surfaces 22 of the tip portion 16 of the hook member 12. As shown in FIG. 1A, the joint between the tip surface 19 and the inner surface 24 (the surface on the inner space 15 side) of the tip portion 16 is tapered by forming an inclined surface 25. . On the base end side (inner surface 24 side) of the inclined surface 25, a substantially wedge-shaped projection 26 that protrudes toward the inner space 15 extends in the left-right direction.

  As shown in FIG. 3, the rotation shaft 14 (see FIG. 1) is inserted into the base end portion 27 that is continuous with the central portion 17 of the hook member 12, and the insertion portion 28 that is a through hole that penetrates the thickness direction. A rotation fulcrum portion 29 is provided. The rotation fulcrum portion 29 is formed in a substantially circular plate shape in side view, and a part of the outer peripheral surface thereof has a large diameter of the lock shaft 30 as a first locking portion included in a first lock mechanism 52 described later. A receiving groove 31 that receives the shaft portion 56 (see FIG. 7) and allows the hook member 12 to rotate relative to the hook support member 13 is formed. The receiving groove 31 includes a bottom surface 32 extending in a substantially arc shape around the same axis as the insertion portion 28 and a right inner side surface 34 defined by a partition wall 33 erected from the right end of the bottom surface 32 (FIG. 7). Reference).

A locking groove 35 as a first locking groove for locking the large-diameter shaft portion 56 of the lock shaft 30 is formed at the lower end portion of the partition wall 33 corresponding to the closed position of the hook member 12. The 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.
Further, on the outer peripheral surface of the rotation fulcrum portion 29, the position opposite to the upper end portion of the locking groove 35 with respect to the insertion portion 28 is a direction toward the axial center of the insertion portion 28 (the radius of the hook member 12 in the rotation direction). A shallow hole 61 as a second locking groove is formed along (direction). The shallow hole 61 is formed in a substantially arc shape (dish shape) in a side sectional view, and is related to the second lock mechanism 60 described later, and will be described in detail later. The shallow hole 61 is not limited to a round hole as long as it has a substantially arc shape (dish shape) in a side sectional view, and may be a groove formed so as to penetrate the rotation fulcrum 29 in the left-right direction.
(2) Hook Support Member As shown in FIG. 1 (a), the hook support member 13 has a substantially U-shape, and the base end portion (upper end portion) hangs a wire from a crane, a link chain, or the like. An annular eye 36 as a connecting portion 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.

  As shown in FIG. 6, the front end side (lower side) of the hook support member 13 has a shape in which the horizontal dimension (width) tapers downward as shown in FIG. The stopper portion 43 is used to close an opening portion 42 (see FIG. 2) formed between the distal end portion 16 and the proximal end portion 27 of the member 12. As shown in FIG. 5, a concave portion 51 having a shape corresponding to the distal end portion 16 (see FIG. 3) of the hook member 12 is formed on the rear surface of the distal end portion (lower end portion) of the stopper portion 43.

  As shown in FIG. 6, an insertion portion 44 for inserting the hook member 12 is formed in a slit shape (substantially rectangular shape) in the vertical direction at the center portion in the left-right direction of the hook support member 13. ing. The hook support member 13 defines a right side plate portion 45 that defines the right inner surface of the insertion portion 44, a left side plate portion 46 that defines the left inner surface of the insertion portion 44, and an upper inner surface of the insertion portion 44. It has an upper plate portion 65 that continues to the recess 40.

  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. Each of the rotation shaft insertion holes 47 and 48 has 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 has a larger diameter than the lock shaft insertion hole 49 formed in the right side plate portion 45.

In addition, a substantially cylindrical deep hole 62 is formed upward from the insertion portion 44 side at the center position (see the dashed line in the drawing) of the upper plate portion 65 in the front-rear and left-right directions. The diameter of the deep hole 62 is the same as the shallow hole 61 (see FIG. 3) of the hook member 12 described above, and the depth of the hole is deeper than that of the shallow hole 61. The deep hole 62 relates to the second locking mechanism 60 described later, and will be described in detail later.
(3) Assembly of hook member 12 and hook support member 13 As shown in FIGS. 3 and 5, the pivot fulcrum portion 29 of the hook member 12 is inserted into the insertion portion 44 of the hook support member 13, and the hook member 12, with the insertion shaft 28 inserted into the insertion portion 28 and the rotation shaft insertion holes 47, 48 in a state where the insertion shaft 28 of the hook support member 13 and the rotation shaft insertion holes 47, 48 of the hook support member 13 are aligned. By fixing the shaft 14 to the hook support member 13, as shown in FIG. 1A, the hook member 12 is supported so as to be rotatable about the rotation shaft 14 with respect to the hook support member 13. 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.

  The hook member 12 has the tip end portion of the stopper portion 43 closest to the tip end portion 16 of the hook member 12 with respect to the hook support member 13, and the opening portion 42 of the hook member 12 is closed. The closed position where the inner space 15 is formed, and the open position where the tip of the stopper portion 43 is farthest from the tip 16 and the opening 42 is opened, as shown in FIG. It is possible to rotate between.

As shown in FIG. 1A, when the hook member 12 is in the closed position, the tip of the hook member 12 enters the recess 51 of the hook support member 13 and the outer side of the tip of the hook support member 13 is moved outward. The portion on the side (opposite the inner space 15) enters the stepped portion 21 of the hook member 12. In the closed position, the protrusion 23 of the hook member 12 contacts the opening edge of the recess 51 of the hook support member 13, so that the stepped portion 21 of the hook member 12 and the recess 51 of the hook support member 13 contact each other. It is supposed not to.
(4) First Lock Mechanism As shown in FIG. 7, the suspension hook 11 is provided with a first lock mechanism 52 for restricting the rotation of the hook member 12 relative to the hook support member 13 in the closed position. Yes. The first lock mechanism 52 includes a lock shaft 30 and a first spring 53 as a first urging means. The lock shaft 30 is inserted into the lock shaft insertion holes 49 and 50 of the hook support member 12, and the hook member 12 rotates along the axial direction, that is, the left-right direction (the axial direction of the hook member 12 in the rotation direction). The fulcrum part 29 can be moved forward and backward.

The lock shaft 30 includes a small-diameter shaft portion 54 that fits in the lock-shaft insertion hole 49 of the right side plate portion 45 of the hook support member 13 in order from the right along the left-right direction, and a larger diameter than the small-diameter shaft portion 54. The medium-diameter shaft portion 55 and the large-diameter shaft portion 56 that is larger in diameter than the medium-diameter shaft portion 55 and fits into the lock shaft insertion hole 50 of the left side plate portion 46 of the hook support member 13 are integrally formed. I have.
The large diameter shaft portion 56 is formed with 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, and the medium diameter shaft portion 55 is formed of the locking groove 35. The small-diameter shaft portion 54 has a length in the left-right direction of the lock shaft 30 that is longer than the distance from the right side surface of the right side plate portion 45 to the left side surface of the left side plate portion 46. It is set to be long.

In addition, a substantially cylindrical recess 57 that receives the first spring 53 is formed in the left end surface of the large-diameter shaft portion 56 along the axial direction.
Then, the small diameter shaft portion 54 of the lock shaft 30 is inserted into the lock shaft insertion hole 49 from the left side, and the first spring 53 is inserted into the recess 57 of the lock shaft 30 so as to cover the left end portion of the lock shaft insertion hole 50. The first spring 53 is compressed by the presser plate 58 by fitting the presser plate 58, whereby the first lock mechanism 52 is assembled to the hook member 12 and the hook support member 13. Thereby, the lock shaft 30 is urged by the first spring 53 toward the direction (right direction) to advance to the rotation fulcrum portion 29, and the right end portion of the small-diameter shaft portion 54 has a lock shaft insertion hole. It is exposed from 49 to the right side.
(5) Second Lock Mechanism As shown in FIG. 1 (b), the second lock mechanism 60 includes a second spring 63 as a second urging means, and a lock ball 64 as a second lock portion. Is included.

The second spring 63 has a natural length longer than the depth of the deep hole 62 of the hook support member 13 and is fitted in the deep hole 62 along the hole direction (vertical direction). The locking ball 64 is attached to the end of the second spring 63 on the opening side of the deep hole 62. The locking ball 64 is a substantially spherical body having a diameter slightly smaller than the diameter of the deep hole 62, and is always moved in the vertical direction (hook) toward the outer peripheral surface of the rotation fulcrum 29 of the hook member 12 by the second spring 63. The member 12 is biased along the radial direction of the rotation direction of the member 12.
2. (1) When the hook member is in the closed position When the hook member 12 is in the closed position, in the first lock mechanism 52, as shown in FIG. The lock shaft insertion hole 50 of the plate portion 46 substantially coincides with the side view, and the lock shaft 30 advances to the rotation fulcrum portion 29 by the urging force of the first spring 53, and 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 comes into contact with the left end edge portion of the lock shaft insertion hole 49 of the right side plate portion 45. In this state, the large-diameter shaft portion 56 of the lock shaft 30 is locked in the locking groove 35, and the rotation of the hook member 12 with respect to the hook support member 13 is restricted.

  On the other hand, in the second lock mechanism 60, as shown in FIG. 1B, the opening of the deep hole 62, that is, the upper inner surface of the insertion portion 44 (the lower surface of the upper plate portion 65) and the outer periphery of the rotation fulcrum portion 29. Since there is almost no gap between the surface and the locking ball 64, the locking ball 64 is retracted from the outer peripheral surface of the rotation fulcrum 29 against the urging force of the second spring 63 and is almost housed in the deep hole 62. It is in. Therefore, the second lock mechanism 60 does not restrict the rotation of the hook member 12 relative to the hook support member 13 in the closed position.

Then, in order to release the above-described restriction of the first lock mechanism 52 and rotate the hook member 12 with respect to the hook support member 13, as shown in FIG. The lock shaft 30 may be retracted from the locking groove 35 of the rotation fulcrum portion 29 by pressing leftward against the biasing force of the spring 53, 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 first spring 53, the right end portion of the large-diameter shaft portion 56 is retracted from the locking groove 35 and received in the receiving groove 31. Thus, the hook member 12 is allowed to rotate with respect to the hook support member 13. 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 has a large diameter of the lock shaft 30. It is moved along the shaft portion 56.
(2) When the hook member is between the closed position and the open position When the hook member 12 is between the closed position and the open position, the first lock mechanism 52 releases the pressure on the lock shaft 30. In this state, the stepped portion 59 between the large diameter shaft portion 56 and the medium diameter shaft portion 55 is in contact with the right inner side surface 34 (left side surface of the partition wall 33) of the receiving groove 31, and the lock shaft 30 is retracted. Maintained at.

Further, in the second lock mechanism 60, as shown in FIG. 1B, the locking ball 64 is maintained in a state of being substantially housed in the deep hole 62 as in the closed position.
(3) When the hook member is in the open position When the hook member 12 is in the open position as shown in FIG. 2A, in the first lock mechanism 52, the hook member 12 is between the closed position and the open position. 7B, as shown in FIG. 7B, the step portion 59 between the large-diameter shaft portion 56 and the medium-diameter shaft portion 55 is formed on the right inner side surface 34 of the receiving groove 31 (the left side surface of the partition wall 33). ), And the lock shaft 30 is maintained in the retracted state. Therefore, the second lock mechanism 63 does not restrict the rotation of the hook member 12 with respect to the hook support member 13 in the open position.

In the second lock mechanism 60, as shown in FIG. 2B, the deep hole 62 and the shallow hole 61 face each other, and the locking ball 64 is directed toward the rotation fulcrum 29 by the urging force of the second spring 63. It advances and is accommodated in the shallow hole 61. In this state, the locking ball 64 is locked in the shallow hole 61 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. 2A, the opening 42 is opened in a state where the rotation of the hook member 12 is restricted at the open position, and the load is hung around the load. The hook member 12 is inserted into the insertion hole formed at the end portion of the cargo handling rope 67 from the distal end portion 16 so that the end portion of the cargo handling rope 67 is hooked on the hook member 12. After the end of the cargo handling rope 67 is hooked on the hook member 12, the hanging hook 11 is raised as it is. When the suspension hook 11 is raised a predetermined distance, a predetermined vertical load is applied to the hook member 12 at the position where the end of the cargo handling rope 67 is hooked. This vertical load is, for example, about 400 N to about 700 N, and is converted into a rotational force of the hook member 12 in the clockwise direction in the figure around the rotation shaft 14. This rotational force also acts on the locking ball 64 locked in the shallow hole 61, and the component force of the rotational force in the biasing direction by the second spring 63 exceeds the biasing force of the second spring 63. Therefore, the locking ball 64 retreats from the shallow hole 61 against the urging force of the second spring 63 and is accommodated in the deep hole 62 as shown in FIG. Thereby, the rotation of the hook member 12 with respect to the hook support member 13 is allowed, and when the load is continuously raised, the hook member 12 rotates with respect to the hook support member 13, and in the closed position, as shown in FIG. As shown, the lock shaft 30 of the first lock mechanism 52 advances to the rotation fulcrum 29 by the urging force of the first spring 53, and the right end of the large-diameter shaft 56 enters the locking groove 35. The rotation of the hook member 12 with respect to the hook support member 13 is automatically restricted.
3. As described above, in the hanging hook 11, in the closed position, the first lock mechanism 52 is engaged with the rotation fulcrum 29 of the hook member 12, so that the first spring 53 is attached in detail. Due to the force, the lock shaft 30 is advanced to the rotation fulcrum 29 in the left-right direction (the axial direction of the rotation direction of the hook member 12), and the large-diameter shaft portion 56 of the lock shaft 30 is locked in the locking groove 35. By doing so, the rotation of the hook member 12 relative to the hook support member 13 can be automatically regulated.

  On the other hand, in the open position, the second locking mechanism 60 independent of the first locking mechanism 52 is engaged with the rotation fulcrum 29 of the hook member 12 alone, and in detail, the biasing force of the second spring 63 The locking ball 64 is advanced to the rotation fulcrum portion 29 along the vertical direction (radial direction in the rotation direction of the hook member 12) and the locking ball 64 is locked to the shallow hole 61. The rotation of the hook member 12 with respect to 13 can be automatically regulated.

Therefore, in this hanging hook 11, with a simple configuration in which a different lock shaft 30 or a locking ball 64 is engaged with the rotation fulcrum 29 according to the closed position and the open position, the closed hook and the open position are The rotation of the hook member 12 can be regulated with an optimum degree of engagement.
In particular, in the closed position, the lock shaft 30 advances into the rotation fulcrum 29 along the left-right direction, that is, the axial direction of the hook member 12, and is securely locked in the locking groove 35. The degree of restriction of the rotation of the hook member 12 can be made relatively strong, and the end of the cargo handling rope and the like can be prevented from being inadvertently pulled out from the hook member 12. In the open position, the locking ball 64 advances into the rotation fulcrum 29 along the vertical direction, that is, the radial direction of the hook member 12, and is locked in the shallow hole 61. Therefore, when the load is lifted with the hook member 12 in the open position, the vertical load of the load is more likely to be applied in the vertical direction than in the left-right direction. It is retracted from the rotation fulcrum 29, and the engagement of the engagement ball 64 with the shallow hole 61 is easily released, and the degree of restriction of the rotation of the hook member 12 can be relatively weakened.

  Thereby, in a state where a predetermined vertical load is not applied to the hook member 12, the rotation of the hook member 12 is restricted, and the end portion of the cargo handling rope 67 is easily hooked or removed from the hook member 12. Can do. When the hook member 12 is lifted slightly while the hook member 12 is in the open position and a predetermined vertical load is applied to the hook member 12, the force acting on the locking ball 64 by the vertical load exceeds the urging force of the second spring 63. The locking ball 64 is retracted from the rotation fulcrum 29 against the urging force of the second spring 63, the locking of the locking ball 64 with respect to the shallow hole 61 is released, and the hook member 12 is moved from the open position to the closed position. Rotate automatically until And since rotation is controlled by the 1st lock mechanism 52 in a closed position, a load can be lifted as it is. Therefore, the operator is freed from the operation of manually releasing the locking of the locking ball 64 with respect to the shallow hole 61 in the second lock mechanism 60 and rotating the hook member 12 to the closed position before lifting the load. You can hang your luggage.

Further, by adjusting the biasing force of the second spring 63, specifically, by adjusting the spring constant of the second spring 63, the degree of restriction of the rotation of the hook member 12 in the open position can be adjusted.
Then, the rotation fulcrum portion 29 is only in a shape that can be engaged with the first lock mechanism 52 and the second lock mechanism 60, that is, only by forming the locking groove 35 and the shallow hole 61, the closed position. In addition, since it is possible to achieve a configuration capable of restricting the rotation of the hook member 12 in the open position, a configuration in which parts engaged with the first lock mechanism 52 and the second lock mechanism 60 are provided separately from the rotation fulcrum portion 29. Compared with, the suspension hook 11 can be simplified.

Therefore, the load can be safely and easily suspended by the suspension hook 11 having such a simple configuration.
4). Modified Example FIG. 8 is a right side view of a hanging hook according to a modified example with the hook member in the open position.

  In the embodiment described above, the restriction of the rotation of the hook member 12 relative to the hook support member 13 is performed by the first lock mechanism 52 in the closed position and by the second lock mechanism 60 in the open position. Accordingly, the first lock mechanism 52 may perform the closed position and the open position. In this case, as shown in FIG. 8, a locking groove 66 having the same shape as the locking groove 35 is additionally formed in the partition wall 33 of the hook member 12 corresponding to the opening position of the hook member 12. As in the closed position, the large-diameter shaft portion 56 (see FIG. 7) of the lock shaft 30 is locked in the locking groove 66 to restrict the rotation of the hook member 12 relative to the hook support member 13.

  The present invention is not limited to the embodiment described above, and various modifications can be made within the scope of the claims. For example, the lock shaft 30 may include, for example, a hook or a pin. The hook support member 13 is not limited to the eye 36, and a small hook or other hanging member can be attached.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows an embodiment of a hanging hook according to the present invention. FIG. In the suspension hook of FIG. 1, (a) is a right side view of a state where the hook member is in an open position, and (b) is a right side cross-sectional view in which a main part in (a) is enlarged. 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 front view of a hook support member. It is front sectional drawing of the hanging hook in the vicinity of a lock mechanism, Comprising: (a) has shown the state which the lock shaft advanced, (b) has shown the state which the lock shaft evacuated. It is a right view of the state which has the hook member in an open position of the hanging hook concerning a modification.

Explanation of symbols

11 Hanging hook 12 Hook member 13 Hook support member 14 Rotating shaft 27 Base end portion 28 Insertion portion 29 Rotating fulcrum portion 30 Lock shaft 35 Locking groove 36 Eye 52 First lock mechanism 53 First spring 60 Second lock mechanism 61 Shallow hole 63 2nd spring 64 ball

Claims (6)

A hook supporting member provided with a connecting portion for connecting to a suspension member at the base end portion, and rotatably supported by the hook supporting member via a rotating shaft, directly or via a hooked member In a hanging hook provided with a hook member capable of hanging luggage,
The hook member has a closed position close to the front end of the hook support member and the front end of the hook member around the rotation axis, and a front end of the hook support member And is configured to be pivotable to an open position that is separated so that a gap between the hook member and the tip of the hook member is 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 first locking member for releasably engaging the pivot fulcrum at the closed position and restricting the pivot of the hook member relative to the hook support member; and the pivot fulcrum at the open position. And a second lock member independent of the first lock member for restricting the hook member from rotating relative to the hook support member. Hanging hook. The first locking member includes a first locking portion locked to the rotation fulcrum portion, and the first locking portion is provided on an outer peripheral surface of the rotation fulcrum portion corresponding to the closed position. A first locking groove for locking is formed,
The second locking member includes a second locking portion locked to the rotation fulcrum portion, and the second locking portion is provided on an outer peripheral surface of the rotation fulcrum portion corresponding to the open position. The hanging hook according to claim 1, wherein a second locking groove for locking is formed. The first locking portion is provided to be movable back and forth along the axial direction of the rotation direction of the hook member with respect to the outer peripheral surface of the rotation fulcrum portion.
The second locking portion is provided so as to be movable back and forth along the radial direction of the rotation direction of the hook member with respect to the outer peripheral surface of the rotation fulcrum portion.
In the closed position, the first locking portion advances to the rotation fulcrum and is locked in the first locking groove,
In the open position, the second locking portion advances to the rotation fulcrum portion and is locked in the second locking groove,
Between the closed position and the open position, the first locking portion and the second locking portion are retracted from the rotating fulcrum portion, and the first locking portion of the first locking portion is The suspension hook according to claim 2, wherein the engagement with the groove and the engagement with the second engagement groove of the second engagement portion are released. The first lock member includes first urging means for urging the first locking portion in a direction to advance to the rotation fulcrum portion,
The second locking member includes second urging means for urging the second locking portion in a direction to advance the rotating fulcrum portion,
In the closed position, the first locking portion is advanced to the rotation fulcrum by the urging force of the first urging means,
The suspension hook according to claim 3, wherein, in the open position, the second locking portion is advanced to the rotation fulcrum by the urging force of the second urging means.   When the hook member receives a predetermined vertical load at the open position, the second locking portion retreats from the rotation fulcrum portion against the urging force of the second urging means, and the second engagement portion. The suspension hook according to claim 4, wherein the stopper is released from being locked with respect to the second locking groove and rotates to the closed position. A hook supporting member provided with a connecting portion for connecting to a suspension member at the base end portion, and rotatably supported by the hook supporting member via a rotating shaft, directly or via a hooked member In a hanging hook provided with a hook member capable of hanging luggage,
The hook member has a closed position close to the front end of the hook support member and the front end of the hook member around the rotation axis, and a front end of the hook support member And is configured to be pivotable to an open position that is separated so that a gap between the hook member and the tip of the hook member is 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 second lock member for restricting the rotation of the hook member with respect to the hook support member by detachably engaging with the rotation fulcrum at the open position;
The second locking member is
A second locking portion that is provided to be movable back and forth along the radial direction of the rotation direction of the hook member with respect to the outer peripheral surface of the rotation fulcrum portion, and is locked to the rotation fulcrum portion;
Second urging means for urging the second locking portion in a direction to advance to the rotation fulcrum portion;
A suspension hook, wherein a second locking groove for locking the second locking portion is formed on the outer peripheral surface of the pivot fulcrum portion in correspondence with the open position.

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