JP2019018014A - Winding device of belt-shaped rope and lanyard - Google Patents

Abstract

To provide a structure of a winding device of a belt-shaped rope capable of preventing the shift to a locked state of the winding device, which is not anticipated by a worker.SOLUTION: A winding device of a belt-shaped rope concerning the present invention includes a winding drums 2 for winding up a belt-shaped rope 4, a ratchet wheel 1 having a single engaged part 11a on an outer circumference, and a ratchet 3 supporting the halfway in a swing manner around the ratchet wheel 1. The ratchet 3 includes a locking piece 30 capable of being engaged to the engaged part 11a and inhibiting the feeding of the belt-shaped rope 4 in one end, and an operation piece 31 capable of being brought into contact with the outer circumference of the ratchet wheel 1 in the other end. A protrusion 10 is characterized by making the locking piece 30 swing by the action of kicking up an inside surface 34 opposed to the ratchet wheel 1 of the action piece 31, and preventing the winding drums 2 from rotating in the feeding direction of the belt-shaped rope 4 by the engagement with the locking piece 30 and the protrusion 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a winder and a lanyard for winding up a belt-like rope of a safety belt for working at a high place used when working at a high place such as a construction site.

  Generally, when working at a high place such as a construction site, an operator is required to wear a safety belt to prevent falling. As an example, the safety belt includes a torso belt attached to the torso of the human body, a rope connected to the torso belt, and a hook attached to one end of the rope. In general, such a safety band hook is hung on a master rope or the like at a work site. When an operator steps off from a high place, the rope is prevented from dropping to the ground surface, but a considerable impact force is applied to the body when the rope is fully extended. In addition, when it is described as “rope” in the following, it is possible to use a belt-like member, a belt-like member, a tape-like member, a strap, It is also possible to use a wire rope.

  In order to solve such a problem, a winder that winds or sends out a rope as a lifeline has been proposed. This winder winds a belt-like rope provided between the connecting part of the body belt and the full harness and the hook, and when force acts in the direction of pulling out the rope coming out from the opening of the winder The rope wound around the drum of the winder is fed out. A device has been proposed in which when the rope is suddenly drawn out at a speed equal to or higher than a certain speed, the rotation of the drum is stopped and the feeding of the rope is instantaneously stopped.

  As an example, a crash prevention device according to Patent Document 1 includes a rotatable drum for winding a belt in a case having a belt outlet on its outer periphery, and rotation in a direction in which the belt is wound around the drum. A spiral spring for applying a force is incorporated, and a ratchet wheel having a plurality of teeth formed at equal intervals on the outer circumference is provided on the same axis as the drum and rotates together with the drum. A ratchet is provided around the outer periphery of the ratchet wheel. The ratchet is provided so that it can swing freely, and the ratchet is engaged with the teeth of the ratchet wheel at one end, and prevents the drum from rotating in the belt feeding direction in the engaged state. A claw portion is provided, and a follower piece that is brought into contact with the outer periphery of the ratchet wheel is formed at the other end, and the ratchet is placed in a direction in which the follower piece comes into contact with the outer periphery of the ratchet wheel. In the swinging state of the ratchet in which the follower piece is urged by the teeth of the ratchet wheel to the maximum in the outer diameter direction, the engaging claw portion opposes the teeth in the circumferential direction of the ratchet wheel, A configuration is adopted in which a required interval is formed between the facing portions.

  That is, the fall prevention device according to Patent Document 1 has a structure in which a feed winding mechanism and an interlock mechanism are built in the device main body, and by using a plurality of teeth on the ratchet wheel, a winding brake is provided. It can be adjusted in multiple stages.

JP-A-10-305109

  Please refer to FIG. FIGS. 12A to 12D show four states of the winder of the comparative example. 12, the winder of FIG. 12 includes a ratchet wheel 100, a drum 200 that is coaxial with the ratchet wheel 100 and winds a rope, and a ratchet 300 around the ratchet wheel 100. On the outer periphery of the ratchet wheel 100, two projecting portions 110 and 120 and two engaged portions 111 and 121 are provided at equal intervals. In the example of FIG. 12, the protrusion 110 and the engaged part 111 are adjacent to each other, and the protrusion 120 and the engaged part 121 are adjacent to each other.

  When the rope is fed out from the state where the ratchet wheel 100 is not in contact with the ratchet 300 as shown in FIG. 12 (a), the drum 200 rotates about the rotation shaft 174 by an angle corresponding to the amount of feeding (FIG. 12). (See arrow direction in (a)). When the drum 200 rotates, the ratchet wheel 100 coaxial with the drum 200 rotates.

  In such a winder, when the ratchet wheel 100 rotates, the corresponding tip 110a or tip 120a of the protrusion 110 or 120 abuts against the opposing surface of the ratchet 300 as shown in FIG. Push the ratchet 300 in the direction of rotation. As shown in FIG. 12B, the ratchet 300 is configured to rotate about the ratchet rotation shaft 372. Therefore, when the tip 110a or the tip 120a pushes the ratchet 300, the ratchet rotation shaft 372 is used as the rotation center. The ratchet 300 rotates. A contact portion of the ratchet 300 with the tip 110 a or the tip 120 a is on one end side of the ratchet 300. This contact portion is referred to as an operating piece 331.

  When the ratchet 300 is rotated by pushing up the operating piece 331, the operating piece 331 is separated from the ratchet wheel 100, whereas the other side of the ratchet 300, that is, the other side of the ratchet 300, It is close to the 100 side (see FIG. 12C). The other end side with respect to the operating piece 331 which is one end side of the ratchet 300 is referred to as a lock piece 330.

  The ratchet 300 is provided with an elastic body S on the side opposite to the side in contact with the tip 110a or the tip 120a of the operating piece 331 (the side opposite to the vertical direction in FIG. 12). The elastic body S urges the ratchet 300 in a direction opposite to the direction in which the operating piece 331 is pushed up. Therefore, after the operating piece 331 is pushed up as described above with the rope being drawn out, the rotation continues when the rope is continuously drawn out with the same force, and the contact between the ratchet wheel 100 and the ratchet 300 is released. The In that case, the operating piece 331 approaches the ratchet wheel 100 by the urging force of the elastic body S. Then, as shown in FIG. 12A, the lock piece 330 is separated from the ratchet wheel 100. The same applies to the case where the feeding of the rope stops or the force pushed up by the feeding of the rope is weaker than the urging force of the elastic body S.

  As described above, the ratchet wheel 100 is provided with the engaged portions 111 and 121. When the shape of the tip 330a of the lock piece 330 is a convex shape, the engaged portions 111 and 121 are formed to have a concave shape that can accept the convex shape. Therefore, in a state where the tip 330a is close to the outer periphery of the ratchet wheel 100, the ratchet wheel 100 may rotate and the engaged portion 111 or the engaged portion 121 may reach the position of the adjacent tip 330a. . Then, the tip 330a enters the engaged portion 111 or the engaged portion 121. At this time, the positional relationship of the ratchet 300 of the ratchet wheel 100 is fixed and the ratchet 300 prevents the ratchet wheel 100 from rotating even if the belt-like rope is drawn out further. This state is referred to as a lock state.

  As a result, since the rotation of the drum 200 coaxial with the ratchet wheel 100 is prevented, the feeding of the rope is temporarily stopped there.

  Here, when the ratchet wheel 100 further rotates from the state of FIG. 12B, the contact between the tip 110a (or 120a) and the operating piece 331 is released, and further, the contact between the ratchet wheel 100 and the ratchet 300 is also released. The Then, the force against the urging force of the elastic body S is released, so that the tip 330a of the lock piece 330 is separated from the ratchet wheel 100 as time passes.

  At this time, whether or not to shift to the locked state by the lock piece 330 is determined by the rope feeding speed. That is, from the time until the tip end portion 330a of the lock piece 330 comes close to the ratchet wheel 100 and returns to its original state (separated from the ratchet wheel 100), the engaged portion 111 that is closest to the close tip end 330a by rotation. Alternatively, when the engaged portion 121 is reached, a locked state is formed (see FIG. 12D). On the other hand, the locked state is not formed unless the tip 330a reaches the closest engaged portion 111 or the engaged portion 121 before the tip portion 330a comes close to the original state (FIG. 12 ( a)).

  When an operator wearing a safety belt falls, the rope feeding speed increases, so it can be said that a locked state is easily formed. In Patent Document 1, the engaged portion is provided several times as compared with that in FIG. 12, and the locked state is instantly formed.

  However, even if all the belt-like ropes are finally unwound from the winder in the safety belt, even if all the belt-like ropes are finally drawn out, the wearer is hung by the belt-like rope before reaching the ground surface. (According to guidelines on the safe use of anti-fall devices). Further, it is assumed that an aerial worker or the like falls down from a safe work place such as a scaffold, falls on the scaffold without dropping, or performs an agile operation other than that.

  In the conventional structure, the length from the position of the lock piece tip (330a, etc.) when the ratchet wheel (100, etc.) is separated from the ratchet (300, etc.) to the closest engaged part (111, etc.) is short. Therefore, the amount of rope supply corresponding to the length is also short. That is, even if the movement amount of the wearer is small, if the movement is rapid, a locked state is unnecessarily formed.

  That is, according to the structure of the winder of the conventional safety belt, the locked state may be formed even by a rapid movement operation in which the operator is not crashed, for example, by a body operation such as turning or squatting.

  An operator may be unable to perform the expected body movement due to an unexpected lock state of the winder, which may cause wobbling in the work place or dropping the tool being held.

  This invention is invented in view of said point, Comprising: It aims at providing the structure of the winder of a strip | belt-shaped rope which suppresses transfer to the locked state of the winder which an operator does not anticipate. .

A first aspect of the embodiment includes a case body having an opening through which a belt-like rope can pass, and a winding drum that is held inside the case body and wound around the belt-like rope that is drawn out or wound up from the opening. A spring for urging the drum in the winding direction, a ratchet wheel that rotates in response to the rotation of the winding drum, and includes a protruding portion and an engaged portion, and the ratchet wheel One of the operating piece and the lock piece which is the other end close to the outer edge of the ratchet wheel with the ratchet rotation shaft provided at any one of the surrounding positions and with the ratchet rotation shaft as the rotation center A ratchet that rotates like this, and an elastic member that biases the operating piece of the ratchet toward the ratchet wheel,
The lock piece is brought close to the ratchet wheel by rotating the ratchet wheel corresponding to the feeding of the belt-like rope and pushing the operating piece in a direction away from the ratchet wheel against the urging force of the protrusion. Then, the rotation of the ratchet wheel is stopped by the engagement of the lock piece with the engaged portion, whereby the rotation of the winding drum in the feeding direction of the belt-like rope is stopped, and the engaged portion Is a winder for the belt-like rope provided at a position adjacent to the protruding portion in the rotation direction of the ratchet wheel when the belt-like rope is extended.
A second aspect of the embodiment is a case body having an opening through which a belt-like rope can pass, and a winding drum that is held inside the case body and wound around the belt-like rope that is drawn out or wound up from the opening. A spring for urging the drum in the winding direction, a ratchet wheel that rotates in response to the rotation of the winding drum, and includes a protruding portion and an engaged portion, and the ratchet wheel One of the operating piece and the lock piece which is the other end close to the outer edge of the ratchet wheel with the ratchet rotation shaft provided at any one of the surrounding positions and with the ratchet rotation shaft as the rotation center A ratchet that rotates like this, and an elastic member that biases the operating piece of the ratchet toward the ratchet wheel,
The lock piece is brought close to the ratchet wheel by rotating the ratchet wheel corresponding to the feeding of the belt-like rope and pushing the operating piece in a direction away from the ratchet wheel against the urging force of the protrusion. Then, the rotation of the ratchet wheel is stopped by the engagement of the lock piece with the engaged portion, whereby the rotation of the winding drum in the feeding direction of the belt-like rope is stopped, and the engaged portion Is in the direction opposite to the rotation direction of the ratchet wheel when the belt-like rope is fed out with respect to the protrusion, and has a central angle of 0 ° to 90 ° with respect to the rotation center of the ratchet wheel. A belt-like rope winder provided at the position.
A third aspect of the embodiment includes a case body having an opening through which a belt-like rope can pass,
A winding drum on which a belt-like rope that is held inside the case body and is fed out or wound up from the opening is wound; a spring that biases the drum in the winding direction; and one of the winding drums A ratchet wheel fixed to a side surface and rotated corresponding to the rotation of the winding drum, provided with a protruding portion and an engaged portion, and provided at any position around the ratchet wheel. The ratchet rotation shaft is supported so as to be swingable, and the operation piece as one end and the lock piece as the other end are swung so as to be close to the outer edge of the ratchet wheel with the ratchet rotation shaft as a rotation center. A ratchet that moves, and an elastic member that urges the operating piece of the ratchet in a direction in contact with an outer periphery of the ratchet wheel, and the lock piece includes the ratchet It is possible to engage with the engaged portion of the trawler, and in the engaged state, the rotation of the belt-like rope of the winding drum is prevented, and the operating piece is attached to the protruding portion of the ratchet wheel. The ratchet is urged by the elastic member toward the direction in which the tip of the operating piece comes into contact with the outer periphery of the ratchet wheel. A belt-like rope winder provided at a position adjacent to the rotation direction of the ratchet wheel when extended.
A fourth aspect of the embodiment includes a case body having an opening through which a belt-like rope can pass, and a winding drum around which the belt-like rope that is held inside the case body and is fed out or wound up is wound. A spring that urges the drum in the winding direction, and is fixed to one side surface of the winding drum, and rotates in accordance with the rotation of the winding drum. A ratchet wheel provided and a ratchet rotation shaft that is provided at any position around the ratchet wheel and supports the middle of the ratchet wheel so as to be swingable, and is an operating piece that is one end with the ratchet rotation shaft as a rotation center. And a lock piece at the other end swinging so that either of the lock pieces comes close to the outer edge of the ratchet wheel, and the operating piece of the ratchet is moved to the outer periphery of the ratchet wheel. An elastic member that urges in the contact direction, and the lock piece is engageable with the engaged portion of the ratchet wheel, and the belt-like rope of the winding drum is in an engaged state. Rotation in the feeding direction is prevented, the operating piece is brought into contact with the protruding portion of the ratchet wheel, and the ratchet is attached in a direction in which the tip of the operating piece comes into contact with the outer periphery of the ratchet wheel by the elastic member. The belt-shaped rope winder provided at a position adjacent to the projecting portion in the rotation direction of the ratchet wheel when the band-shaped rope is extended.
A fifth aspect of the embodiment includes a case body having an opening through which a belt-like rope can pass, and a winding drum around which the belt-like rope that is held inside the case body and is drawn out or wound up is wound. A spring that urges the drum in the winding direction, and is fixed to one side surface of the winding drum, and rotates in accordance with the rotation of the winding drum. A ratchet wheel provided and a ratchet rotation shaft that is provided at any position around the ratchet wheel and supports the middle of the ratchet wheel so as to swing freely. And a lock piece at the other end swinging so that either of the lock pieces comes close to the outer edge of the ratchet wheel, and the operating piece of the ratchet is moved to the outer periphery of the ratchet wheel. An elastic member that urges in the contact direction, and the lock piece is engageable with the engaged portion of the ratchet wheel, and the belt-like rope of the winding drum is in an engaged state. Rotation in the feeding direction is prevented, the operating piece is brought into contact with the protruding portion of the ratchet wheel, and the ratchet is attached in a direction in which the tip of the operating piece comes into contact with the outer periphery of the ratchet wheel by the elastic member. A belt-shaped rope winder in which the engaged portion is single.
The sixth aspect of the embodiment is fixed to one side surface of the winding drum, a rotatable winding drum for winding the belt-shaped rope by urging it in the winding direction by a spring spring inside the winding case. The belt-type rope winder includes a ratchet wheel having a protrusion on the outer periphery, and a ratchet supported on the periphery of the ratchet wheel so as to be swingable. The protrusion of the ratchet wheel is single. The ratchet is engaged with the protruding portion of the ratchet wheel at one end, and a lock piece that prevents rotation of the belt-shaped rope of the winding drum in the engaged state; An operating piece that is in contact with the outer periphery of the ratchet wheel is provided at the end, and the tip of the operating piece is attached to the outer side of the ratchet wheel by an elastic member. The winding drum rapidly rotates in the feeding direction of the belt-like rope, and the protruding portion kicks up the inner surface of the working piece facing the ratchet wheel. A belt-like rope that swings the lock piece and prevents the winding drum from rotating in the feeding direction of the belt-like rope due to the engagement of the engaged portion adjacent to the protrusion with respect to the tip of the lock piece. Winder.
The seventh aspect of the embodiment is a winding in which a hook is provided at one end and a band-like rope having a connecting portion with a safety band at the other end is wound, and the winding is biased in the winding direction of the band-like rope. A drum, a ratchet wheel coaxial with the take-up drum, correspondingly rotating and stopping, and provided with a protruding portion and an engaged portion; and provided at any position around the ratchet wheel A ratchet that rotates about a ratchet rotation shaft provided at a position between the one end and the other end so that either the one end or the other end is close to the outer edge of the ratchet wheel; An elastic member that biases the one end portion of the ratchet toward the ratchet wheel, and when the other end portion engages with the engaged portion, the rotation of the ratchet wheel is stopped, and the engaged portion Department is front To protrusion winder of strip rope provided in a position adjacent to the rotational direction of said ratchet wheel when said strip rope is paid out.

  The belt-like rope winder according to the present invention can suppress the transition of the winder to the locked state, which is not anticipated by the operator.

It is the schematic which shows the lanyard of embodiment. It is a disassembled schematic diagram which shows the structure of the winder of the strip | belt-shaped rope of 1st Embodiment. It is a schematic front view which shows the ratchet wheel of the winder of the strip | belt-shaped rope of 1st Embodiment. It is a schematic front view which shows the ratchet wheel and ratchet of the winding device of the strip | belt-shaped rope of 1st Embodiment. It is the schematic which shows the state of a ratchet wheel and ratchet when a rope is drawn out at low speed in the winder of the strip | belt-shaped rope of 1st Embodiment. It is the schematic which shows the state of a ratchet wheel and ratchet when a rope is drawn | fed out at high speed in the winder of the strip | belt-shaped rope of 1st Embodiment. It is a disassembled schematic diagram which shows the structure of the winder of the strip | belt-shaped rope of 2nd Embodiment. It is a schematic front view which shows the ratchet wheel of the winder of the strip | belt-shaped rope of 2nd Embodiment. It is a schematic front view which shows the ratchet wheel and ratchet of the winding device of the strip | belt-shaped rope of 2nd Embodiment. It is the schematic which shows the state of a ratchet wheel and ratchet when a rope is drawn | fed out at low speed in the winder of the strip | belt-shaped rope of 2nd Embodiment. It is the schematic which shows the state of a ratchet wheel and ratchet when a rope is drawn out at high speed in the winder of the strip | belt-shaped rope of 2nd Embodiment. It is the schematic which shows the state of the ratchet wheel and ratchet at the time of a rope being extended | stretched in the winder of the conventional strip | belt-shaped rope.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each figure, the same number is attached | subjected to the same part, and the overlapping description is abbreviate | omitted. It should also be noted that the drawings may be exaggerated to understand the present invention and are not necessarily shown to scale. The present invention is not limited to the embodiment shown below.

[First Embodiment]
(Lanyard)
FIG. 1 is a schematic perspective view showing a lanyard L of the embodiment. As shown in FIG. 1, the lanyard L of the first embodiment includes a winder X having an opening through which a belt-like rope can pass, a belt-like rope 4 extended from the opening of the winder X, and a winder. It has the connection part Y connected to X, and the hook Z provided in the end of the strip | belt-shaped rope 4. FIG. The lanyard L is connected to, for example, a safety belt for working at a high place such as a waist belt or a full harness worn by the worker, and the hook Z on the opposite side of the connecting portion Y in the lanyard L is a single pipe, parent rope, retractor It is applied to the type of fall prevention device (safety block) and other structures. In this way, the lanyard L is connected to the structure via the hook Z, and further connected to a safety belt (body belt, full harness, etc.) worn by the operator via a connecting portion Y (same as the hook 5 described later). As a result, it is an instrument that prevents the operator from crashing.

(Winder)
(Overall structure)
Next, the internal structure of the winder X of the first embodiment will be described. FIG. 2 is a schematic exploded perspective view of the belt-like rope winder X of the embodiment. As shown in FIG. 2, the winder X includes a ratchet wheel 1, a drum 2 that is coaxial with the ratchet wheel 1 and winds the belt-like rope 4 inside the case body (see FIG. 1), and the ratchet wheel 1. A ratchet 3 is provided around.

(Ratchet wheel drum support)
Inside the case body of the winder X, a bracket 6 is provided to hold the ratchet wheel 1 and the drum 2 coaxially and rotatably. The bracket 6 has a pair of vertical frames that are parallel to each other and face each other. Furthermore, a connection frame 65 is provided between each end portion (lower end in the figure) of the pair of vertical frames. With the pair of vertical frames and the connection frame 65, the frame 6 is substantially It is formed in a letter shape. The ratchet wheel 1 and the drum 2 are disposed between the pair of vertical frames of the bracket 6.

  The drum 2 is disposed with respect to the bracket 6 so that the rotation direction thereof and the opposed surfaces of the pair of vertical frames are substantially parallel. In other words, the cross section orthogonal to the axial direction of the rotating shaft of the drum 2 (a drum rotating shaft 74 described later) and the opposed surfaces of the pair of vertical frames are substantially parallel.

  The ratchet wheel 1 is disposed with respect to the bracket 6 so that the rotation direction thereof and the opposed surfaces of the pair of vertical frames are substantially parallel. In other words, the main surface of the drum 2 and the opposed surfaces of the pair of vertical frames are substantially parallel.

  Further, through holes 64 and 64 corresponding to the through holes of the ratchet wheel 1 and the drum 2 are provided at intermediate positions (for example, the center side) in the longitudinal direction of the pair of vertical frames of the bracket 6. A drum rotation shaft 74 is passed through each of the through holes 64 and 64, and the drum rotation shaft 74 serves as a rotation shaft for the ratchet wheel 1 and the drum 2. The drum rotating shaft 74 is passed through one through hole 64, passes through the through hole 14 of the ratchet wheel 1, passes through the through hole at the corresponding position of the drum 2, and passes through the through hole 64 in the other vertical frame of the bracket 6. . The drum rotating shaft 74 that has passed through the through-hole 64 in the other vertical frame is prevented from being detached from the bracket 6 by a washer 84.

  An inner end of a spring (not shown) is connected to the drum rotation shaft 74, and an outer end thereof is fixed to the bracket 6. The mainspring spring is tightened by the rotation of the belt-like rope 4 of the drum 2 in the feeding direction, and the drum 2 is returned and rotated in the direction of winding the belt-like rope 4 by its restoring elasticity.

  In addition, although the ratchet wheel 1 in each figure is provided with the recessed part (hole) for fixation other than a through-hole, this is an example, Comprising: The position and number of a recessed part are arbitrary, and fixing method Is not limited to this. That is, it is also possible to adopt a configuration in which no fixing recess is provided. Details of the ratchet wheel 1 will be described later.

(Ratchet support)
A through-hole 62 that holds the ratchet 3 rotatably is provided in one of the vertical frames of the bracket 6. In the vertical frame of the bracket 6, the through hole 62 is provided at a position on the opposite side to the connection frame 65 side with respect to the position of the through hole 64 of the drum rotation shaft 74. This position is set so that the drum 2 supported by the drum rotating shaft 74 and the through-hole 32 of the ratchet 3 do not interfere with each other. The ratchet rotation shaft 72 is passed through the through hole 62, and the ratchet rotation shaft 72 serves as the rotation center (swing center) of the ratchet 3. The ratchet 3 and the elastic member S will be described later.

  The ratchet rotary shaft 72 is passed through one through hole 62, passes through the through hole 32 of the ratchet 3, and passes through the through hole 62 in the other vertical frame of the bracket 6. The ratchet rotary shaft 72 that has passed through the through-hole 62 in the other vertical frame is prevented from coming off from the bracket 6 by a washer 83.

(Hook support)
On the side opposite to the connection frame 65 (lower end in the figure) (upper end side in the figure) of each of the pair of vertical frames of the bracket 6, a step portion is provided so as to narrow the interval between the pair of vertical frames. The bracket 6 further has a plate-like hook support portion 61 that protrudes in parallel with the vertical frame at the tip of the stepped portion. The hook support portion 61 supports the hook 5. The hook 5 is as follows.

  The hook 5 has an inverted J-shaped hook portion 50 and a supported portion 51 connected to the proximal end side of the hook portion 50 and formed in a disk shape. The hook portion 50 has a curved portion and a straight portion that extends linearly from one end of the curved portion, and further, a supported portion 51 that protrudes orthogonally from the straight portion at the end of the straight portion. It has a connection part. The peripheral surface of the supported portion 51 is connected to the side of the connecting portion opposite to the curved portion. The hook 5 is provided with an opening / closing portion that is pivotally supported directly or indirectly (via a fixing member or the like) at any position of the linear portion.

  The opening / closing portion has a predetermined interval between a position (first position) where the tip thereof corresponds to the tip of the curved portion of the hook portion 50 and the tip of the bent portion of the hook portion 50 and the tip of the opening / closing portion, with the shaft support portion as the rotation center. It rotates between the taken position (second position). The hook portion 50 is in a locked state in a state (first position) where the opening / closing portion tip is on the bending portion tip side and the gap between the two is not open. On the other hand, the lock is released at a position (second position) where the gap between the front end of the hook portion 50 and the front end of the opening / closing portion is opened.

  Through holes 63 and 63 corresponding to the through holes 53 of the hook 5 are provided at the centers of the hook support portions 61. A hook support pin 73 is passed through each of the through holes 63 and 63, and the hook 5 is held on the bracket 6 by the hook support pin 73. Since the bracket 6 is held inside the case of the winder X, the winder X holds the hook 5 as a result. As shown in FIG. 2, the hook support pin 73 may be configured to rotatably support the hook 5 similarly to the drum rotation shaft 74.

  The hook support pin 73 is passed through the through hole 63 of one hook support portion 61, passes through the through hole 53 of the supported portion 51 in the hook 5, and passes through the through hole 63 in the other hook support portion 61. The hook support pin 73 that has passed through the through hole 63 in the other hook support portion 61 is prevented by a washer 83 from falling off the bracket 6.

(Ratchet wheel 1)
The ratchet wheel 1 will be described with reference to FIG. As shown in FIG. 3, the ratchet wheel 1 has a so-called oval disk-shaped portion (hereinafter referred to as “rotary disk”). Further, the ratchet wheel 1 is formed with a protruding portion 10 that protrudes on the substantially same plane as the rotating disk from the outer periphery of the rotating disk to the outer side along the rotation direction of the predetermined ratchet wheel 1. The rotation direction is a direction in which the rotating disk (ratchet wheel 1) rotates in accordance with the rotation direction of the drum 2 when the belt-like rope 4 is unwound from the winder X. The shape of the turntable of the ratchet wheel 1 is not limited to an ellipse, an oval, or an oval (a combination of a straight portion and a curved portion), but may be a perfect circle (not a perfect circle, but refer to the second embodiment). Good. In FIG. 3, the imaginary line passing through the through hole 14 from the protrusion 10 is longer than the line passing through the through hole 14 orthogonal to the imaginary line. That is, the former is the long side and the latter is the short side.

  The angle of one rising portion of the protrusion 10 with respect to the outer periphery of the rotating disk is an obtuse angle. On the other hand, the other rising portion with respect to the outer periphery is an acute angle. Therefore, a concave engaged portion 11a is formed between a portion (the other side edge portion) from the rising portion that is an acute angle of the protruding portion 10 to the tip 10a (the protruding end) and the outer periphery of the rotating disk. That is, the other side edge part which becomes the acute angle of the front-end | tip 10a of the protrusion part 10 and the to-be-engaged part 11a are provided adjacently. A distal end 30a of a lock piece 30 of a ratchet 3 to be described later can enter and engage with the engaged portion 11a.

  A through hole 14 is provided in the approximate center of the rotating disk of the ratchet wheel 1. The through hole 14 is formed to have a diameter slightly larger than the diameter of the drum rotation shaft 74. Further, a bulging portion 12 is provided on the opposite side of the ratchet wheel 1 across the protruding portion 10 and the through hole 14. The bulging portion 12 is formed to have a larger curvature than the other portions (reference numerals 11 and 13), so that the radius from the rotation center is longer than that of the other portions. The “other portions” described here are portions excluding the protruding portions 10. In other words, if the outer periphery of the ratchet wheel 1 is divided into four equal parts, the protruding portion 10 side and the bulging portion 12 on the opposite side across the through hole have a long radius from the center, and the other portions are configured to be short. ing.

(Ratchet 3)
The ratchet 3 will be described with reference to FIG. As shown in FIG. 4, the ratchet 3 has a so-called crescent shape, and the convex curve side bulges (or protrudes) on the center side of the curve connecting one end to the other end of the crescent shape. . The above-described through hole 32 is formed in the bulged portion, and the ratchet rotation shaft 72 is passed through the through hole 32, and this ratchet rotation shaft 72 becomes the rotation center (swing center) of the ratchet 3.

  The ratchet 3 includes a lock piece 30 and an operating piece 31. The ratchet 3 is arranged so that the tip end (the other end portion of the ratchet 3) of the operating piece 31 follows the rotation direction so that the tip end 30a of the lock piece 30 (one end portion of the ratchet 3) faces the rotation direction of the ratchet wheel 1. The ratchet wheel 1 is disposed at a proper position.

  In the ratchet 3, a spring fixing portion 33 that fixes one end of the elastic body S (for example, a coil spring) is provided on the side of the working piece 31 with respect to the through hole 32 at the edge of the convex curve side in the overall shape. The other end of the elastic body S is held, for example, by a bracket 6 or the like, and urges the ratchet 3 toward the ratchet wheel 1 side. Thereby, the end of the operating piece 31 is close to the outer peripheral side of the ratchet wheel 1, and the tip 30a of the lock piece 30 is separated to a position where it does not engage even when the engaged portion 11a is opposed.

(Transition to lock state)
Operations of the ratchet wheel 1 and the ratchet 3 will be described with reference to FIGS. When the rope is fed out from the state in which the ratchet wheel 1 is not in contact with the ratchet 3 as shown in FIG. 5A, the drum 2 rotates around the drum rotation shaft 74 by an angle corresponding to the amount of feeding (FIG. 5A). 5 (a) arrow direction reference). When the drum 2 rotates, the ratchet wheel 1 held or fixed to the drum 2 rotates.

  When the ratchet wheel 1 rotates in a rotation direction corresponding to the rope feed-out direction, the tip 10a of the projecting portion 10 abuts on the inner surface 334 of the ratchet 3 as shown in FIG. 5B, and the ratchet 3 is separated from the ratchet wheel 1. Extrude in the direction you want. Since the ratchet 3 is configured so that either the operating piece 31 or the lock piece 30 is switched around the ratchet wheel 1 around the ratchet rotation shaft 72, the tip as shown in FIG. The ratchet 3 rotates about the ratchet rotation shaft 72 as a center of rotation by pushing the working piece 31 side of the inner side surface 34 of the ratchet 3 of 10a.

  While the operation piece 31 is separated from the ratchet wheel 1 by this rotation, the tip 30a of the lock piece 30 on the opposite side is close to the ratchet wheel 1 (see FIG. 6C). When the feeding of the rope is continued with the same force, the rotation continues and the contact between the ratchet wheel 1 and the ratchet 3 is released (FIG. 6C). Accordingly, the push-up force of the operating piece 31 by the ratchet wheel 1 is released, so that the tip 30 a of the lock piece 30 is rotated away from the ratchet wheel 1 by the urging force of the elastic body S.

According to this embodiment, the position of the engaged portion 11a with respect to the protruding portion 10 is a position adjacent to the rotation direction of the ratchet wheel 1 corresponding to the rope feeding direction. Therefore, in the first case where the engaged portion 11a and the tip 30a are opposed to each other and the tip 30a is engaged with the engaged portion 11a, immediately after the push-up force by the protruding portion 10 is released (FIG. 6C). This is a case where the engaged portion 11a rotates (rotates 180 ° (half rotation) in the figure) to the tip 30a of the lock piece 30 until the tip 30a returns to the position before biasing.
In the second case where the engaged portion 11a and the tip 30a are opposed to each other and the tip 30a is engaged with the engaged portion 11a, it is pushed up by the opposite bulging portion 12 with the protruding portion 10 and the through hole 14 interposed therebetween. This is a case where the engaged portion 11a rotates to the tip 30a of the lock piece 30 from immediately after the force is released (immediately before FIG. 6A) until the tip 30a returns to the position before urging.

(Action / Effect)
According to the first case in the present embodiment, the tip 30a is at the original position (the push-up force with respect to the urging force is zero) from when the push-up force by the protrusion 10 is released (immediately after FIG. 6C). If the engaged portion 11a does not move to a position opposite to the tip 30a within a short period of time, the tip 30a of the lock piece 30 does not engage the engaged portion 11a.

  In other words, the engaged portion 11a moves to a position opposite to the tip 30a within a short period of time when the tip 30a returns to the original position from the time when the push-up force is released, so that the tip 30a approaches the outer periphery of the ratchet wheel 1. If the ratchet wheel 1 rotates and the engaged portion 11a reaches the position of the adjacent tip 30a, the tip 30a enters the engaged portion 11a. In this way, the rotation of the ratchet wheel 1 is prevented (locked state).

  On the other hand, in the first case, if the engaged portion 11a does not move to the position opposite to the tip 30a within the time when the tip 30a returns to the original position from the time when the push-up force is released, the locked state is entered. Don't be. In other words, it is difficult to form a locked state in momentary and rapid movement movements that are not a worker's crash, for example, temporary body movements such as turning and crouching, and a relatively continuous belt-like rope like a crash. In the state where the is extended, the lock state is easily formed.

  However, the locked state in the first case is when the belt-like rope is fed out at a very high speed. In other words, the probability of being in the locked state in the second case is higher. In this embodiment, the ratchet 3 is pushed up twice during one rotation of the ratchet wheel 1, but in the first case, the possibility of being in a locked state is considerably low. This is because there is almost no feeding speed of the belt-like rope 4 such that the ratchet wheel 1 rotates 180 ° before the lock piece 30 returns to the original position. From the above, it can be seen that the frequency with which the locked state of the present embodiment is formed is considerably lower than in the prior art.

  The description of the above embodiment can be paraphrased as follows.

  A first embodiment will be described in detail with reference to the drawings. FIG. 1 is a front view showing a ratchet wheel 1 of a belt-like rope winder X according to an embodiment. FIG. 2 is a front view showing the ratchet wheel 1 and the ratchet 3 of the belt-shaped rope winder X according to the embodiment. FIG. 2 is a schematic exploded view showing the structure of the belt-like rope winder X according to the present invention.

  First, referring to FIG. The belt-shaped rope winder X is a rotatable winding drum that winds the belt-shaped rope 4 inside the winding case (see FIG. 1) by energizing it in the winding direction by a spring (not shown). 2, a metal ratchet wheel 1 that is fixed to one side of the winding drum 2 and has a protruding portion 10 on the outer periphery, and a ratchet 3 that supports the ratchet wheel 1 around the ratchet wheel 1 so that it can swing freely. .

  A bracket 6 is provided in the winding case, and the drum 2 for winding the belt-like rope 4 is supported on a rotating shaft 74 that is rotatably supported at both ends by the bracket 6. The leading end of the belt-like rope 4 wound around the drum 2 is inserted into a drawer outlet (not shown) of the case, and a safety band hook (not shown) is attached to the tip located outside. In addition, the ratchet wheel 1 is fixed to the drum 2 via a rotating shaft 74 through means by screwing. As will be described later, a single projecting portion 10 is formed on the outer periphery of the ratchet wheel 1, and the projecting portion 10 is like a bird cage, and is provided with a tip 10 a so that the locking piece 30 of the ratchet 3 A V-shaped engaging portion with which the tip 30a is engaged is provided.

  Further, the ratchet wheel 1 is formed with an insertion hole 14 of the rotation shaft 74 and a notch (not shown) at a position facing the inner periphery of the insertion hole 14, and a pin attached to the rotation shaft 74 at the notch (Not shown) are engaged. For this reason, when the drum 2 rotates by pulling out the belt-like rope 4, the ratchet wheel 1 and the rotating shaft 74 rotate together with the drum 2. An inner end of a spiral spring (not shown) is connected to the rotating shaft 74, and an outer end thereof is fixed to the bracket 6. The spiral spring (not shown) is wound by the rotation of the belt-like rope 4 of the drum 2 in the feeding direction, and the drum 2 is returned and rotated in the direction of winding the belt-like rope 4 by its restoring elasticity.

  Furthermore, a ratchet 3 is provided on the outer peripheral upper portion of the ratchet wheel 1, and the ratchet 3 is supported by the bracket 6 via a pin 72 so as to be swingable. Further, the ratchet 3 is provided with a lock piece 30 that can be engaged with the protruding portion 10 of the ratchet wheel 1 at one end, and an operation piece 31 having an arc of the outer periphery of the end is formed at the other end. Yes. An elastic body S (winding spring) is connected to the ratchet 3, and the elastic body S deflects the ratchet 3 in a direction in which the operating piece 31 comes into contact with the outer periphery of the ratchet wheel 1. 2 and 3, the elastic member S is preferably fixed at one end to the spring fixing portion 33 on the side of the operating piece 31 of the ratchet 3 and fixed at the other end to an arbitrary position in the winding case.

  The belt-shaped rope winder X includes a hook 5 and is fixed to the bracket 6 via a pin 73 by means of screwing. Usually, the hook 5 is engaged with a fixing part such as a structure, and a hook (not shown) attached to the tip of the belt-like rope 4 is connected to a safety belt for preventing a high place fall attached by an operator.

  Please refer to FIG. The ratchet wheel 1 includes a single protrusion 10. The ratchet wheel 1 has a flat shape, and the region of the projecting portion 10 is like a bird's cage, and is provided with a tip 10a so that the tip 30a of the lock piece 30 of the ratchet 3 is engaged with a V shape. The engaging part is provided. In order to explain FIGS. 5 and 6 to be described later, regions other than the protruding portion 10 are denoted by reference numerals 11, 12, and 13.

  Please refer to FIG. As described above, the ratchet 3 is engageable with the protruding portion 10 of the ratchet wheel 1 at one end, and the lock piece 30 that prevents the belt-like rope 4 of the drum 2 from rotating in the feeding direction in the engaged state; The other end portion is provided with an operating piece 31 that comes into contact with the outer periphery of the ratchet wheel 1, and the ratchet 3 is urged by the elastic member S so that the tip of the operating piece 31 comes into contact with the outer periphery of the ratchet hole 1. The drum 4 is rapidly rotated in the feeding direction of the belt-like rope 4, and the protruding portion 10 swings the lock piece 30 by the action of kicking up the inner side surface 34 of the action piece portion 31 facing the ratchet wheel 1. The winding drum 2 is prevented from rotating in the feeding direction of the belt-like rope 4 by the engagement of the protruding portion 10 of the ratchet wheel 1 with the tip 30a of the belt.

  Reference is made to FIGS. FIG. 5 is a view showing a state of the ratchet wheel and the ratchet when the rope is drawn out at a low speed in the belt-like rope winder according to the embodiment. FIG. 6 is a view showing a state of the ratchet wheel and the ratchet when the rope is drawn out at high speed in the belt-like rope winder according to the embodiment.

  First, referring to FIG. For convenience, the ratchet wheel 1 rotates in the direction of the arrow shown in FIG. 5A as a starting point, and the belt-like rope 4 is drawn out. When the belt-like rope 4 rotates at a low speed, the tip 10a of the protruding portion 10 of the ratchet wheel 1 kicks the inner side surface 34 of the ratchet 3 facing this in the situation where the transition is made from FIG. 5 (a) to (c). It passes without being raised, shifts to FIGS. 5B and 5C, and returns to FIGS. 5D and 5A. That is, the winding drum 2 continues to rotate in the feeding direction of the belt-like rope 4 without engaging the protrusion 30 of the ratchet wheel 1 with the tip 30 a of the lock piece 30 of the ratchet 3. This movement is the same even if the number of the protrusions 10 of the ratchet wheel 1 is plural.

  Reference is now made to FIG. Here, for the sake of convenience, the ratchet wheel 1 rotates in the direction of the arrow shown in FIG. 6A and the belt-like rope 4 is fed out, starting from FIG. 6A as in FIG. 5A. When the belt-like rope 4 is rotated at a high speed, the tip 10a of the protruding portion 10 of the ratchet wheel 1 kicks the inner side surface 34 of the ratchet 3 facing the ratchet wheel 1 in the situation of transition from FIG. Will be raised. Then, the elastic member S urges the tip of the action piece 31 of the ratchet 3 toward the direction in contact with the outer periphery of the ratchet hole 1 to swing the lock piece 30, and the tip 30 a of the lock piece 30 is applied to the ratchet wheel 1. After approaching, the tip 30a of the lock piece 30 is engaged with the protruding portion 10 through the state shown in FIGS. As a result, the rotation of the belt-like rope 4 of the winding drum 2 in the feeding direction is stopped. This movement can be said to be the same even when the number of the protrusions 10 of the ratchet wheel 1 is plural.

  However, the case where the number of the protrusions 10 of the ratchet wheel 1 is plural is clearly different from the case where it is single. Refer to FIG. 12 again. FIG. 12 is a diagram showing a ratchet wheel and a state of the ratchet when the rope is drawn out in a conventional belt-shaped rope winder, and the number of protrusions of the ratchet wheel 100 is two (110, 120). . Here too, for convenience, the ratchet wheel 100 rotates in the direction of the arrow shown in FIG. When the belt-like rope rotates at a high speed, the tip 110a of the protruding portion 110 of the ratchet wheel 100 kicks up the inner side surface 334 of the ratchet 300 facing the ratchet wheel 100 in the situation of transition from FIG. It will be. Then, the elastic member S biases the tip of the action piece 331 of the ratchet 300 toward the direction in contact with the outer periphery of the ratchet hole 100 to swing the lock piece 330, and the tip 330 a of the lock piece 330 is applied to the ratchet wheel 100. The tip 330a of the lock piece 330 is engaged with the protruding portion 120 through the state shown in FIGS. As a result, the rotation of the belt-like rope of the winding drum in the feeding direction is stopped. That is, it will be understood that the winding of the belt-like rope stops when the ratchet wheel 100 makes a half turn. That is, the winding of the belt-shaped rope stops every third turn when the number of protrusions is three, and every quarter turn when there are four protrusions. In other words, the more protrusions of the ratchet wheel, the greater the opportunity to operate the interlock. In fact, if the operator moves quickly, the reel will rotate if the interlock is activated. Since it stops, it becomes a factor which makes an operator wobble in a workplace.

In contrast to the conventional winder having a plurality of protrusions, the belt-like rope winder X according to the present invention stops the winding of the belt-like rope when the ratchet wheel 1 makes one round.
In the examples, a comparative experiment was performed on how fast the reels stopped rotating with respect to a winder having two protrusions and a winder having one protrusion.

Experiment place: In the Kiyo Logistics Co., Ltd.
Experiment date: Winder A to be compared on June 19, 2017 Winder with two protrusions (Titan (registered trademark) Harness winding W lanyard Libra [DJR-RBL-TW24AP-UJ / DJR -RBL-1GAP-UJ] manufactured by Sanko Corporation
B: Equipment used for winder measurement according to the present invention: iPhone5S (registered trademark) Software used for measurement made by Apple: Smart Metronome: Tomohiro Ihara (Metronome App)
In the comparative experiment, tapes were applied to the floor in a straight line at intervals of 0.5 m, and the subject moved by walking on the tapes according to the tempo specified by the metronome. Then, for the two winders A and B to be compared, when the tempo at which the interlock was operated was recorded five times, the results of Table 1 for A and Table 2 for B were obtained.

  As shown in Table 1, it is understood that the winder A is locked when walking at a tempo of 104 to 107 bpm, whereas the winder B is locked when walking at a tempo of 205 to 206 bpm. In other words, in the case of the winder A, the belt is locked even at the feeding speed of the belt-like rope that is slower than the speed at the time of the crash, and the drum stops rotating, thereby preventing the operator from moving quickly. It can be understood that is high. On the other hand, in the case of the winder B, it can be understood that the lock is not applied up to twice as fast as the winder A, and there are few obstacles to the movement operation and work of the operator. Let's go.

[Second Embodiment]
A winder X according to a second embodiment will be described with reference to FIGS. In the following description, the description which overlaps with 1st Embodiment is omitted. Since the configuration of the lanyard excluding the winder is the same as that of the first embodiment, the description is omitted.

(Ratchet wheel 1)
In the ratchet wheel 1 in the first embodiment, the bulging portion 12 is provided on the opposite side across the protruding portion 10 and the through hole 14, but the bulging portion 12 is not provided in the second embodiment. The opposite side (reference numeral 12 in FIGS. 7 to 11) has the same or the same curvature as the other parts (reference numerals 11 and 13), and the radius from the center of rotation is substantially the same as the other parts. The “other portions” described here are portions excluding the protruding portions 10. That is, when the outer periphery of the ratchet wheel 1 is divided into four equal parts, only the protrusion 10 has a distance from the radius, and the other parts are substantially the same.

  The distance from the radius “almost the same” means that the length is such that the ratchet wheel 1 does not come into contact with the operating piece 31 during the rotation of the ratchet wheel 1. Or even if it contacts the operation piece 31, since the radius of parts other than the protrusion part 10 is short compared with the movement amount which the protrusion part 10 adjoins the front-end | tip part 30a of the lock piece 30 to the ratchet wheel 1, the said movement The amount is about 70% or less.

(Action / Effect)
According to the present embodiment, the tip 30a returns to the original position (when the push-up force with respect to the urging force is zero) from the time when the push-up force by the protruding portion 10 is released (immediately after FIG. 11C). If the engaged portion 11a does not move to a position facing the tip 30a in time, the tip 30a of the lock piece 30 does not engage with the engaged portion 11a.

  In other words, the engaged portion 11a moves to a position opposite to the tip 30a within a short period of time when the tip 30a returns to the original position from the time when the push-up force is released, so that the tip 30a approaches the outer periphery of the ratchet wheel 1. If the ratchet wheel 1 rotates and the engaged portion 11a reaches the position of the adjacent tip 30a, the tip 30a enters the engaged portion 11a. In this way, the rotation of the ratchet wheel 1 is prevented (locked state).

  On the other hand, if the engaged portion 11a does not move to a position facing the tip 30a within the time when the tip 30a returns to the original position from the point of time when the push-up force is released, the locked state is not achieved. In other words, it is difficult to form a locked state in momentary and rapid movement movements that are not a worker's crash, for example, temporary body movements such as turning and crouching, and a relatively continuous belt-like rope like a crash. In the state where the is extended, the lock state is easily formed.

  Furthermore, in the present embodiment, the ratchet 3 is pushed up only once during one rotation of the ratchet wheel 1, and the frequency with which the locked state of the present embodiment is formed is considerably higher than in the prior art. You can see that it is lower.

[Third Embodiment]
The lanyard and winder of the third embodiment will be described. The engaged portion 11 a in the first embodiment is provided adjacent to the rotation direction of the ratchet wheel 1 in the protruding portion 10. However, the engaged portion (not shown) of the second embodiment is provided on the opposite side to the rotation direction of the ratchet wheel 1 when the belt-like rope 4 is extended with respect to the protruding portion 10 (FIG. 6: reference numeral 13). Specifically, it is provided at any position in the range of a central angle of 0 ° to 90 ° with reference to the through hole 14 that is the rotation center of the ratchet wheel 1. In other words, the position in the opposite direction adjacent to the imaginary line connecting the through hole 14 and the protruding portion 10 is 0 °, and the engaged portion 11a is provided in the opposite direction up to a range of 90 ° in the central angle. Shall. Also in this embodiment, it is possible to make the bulging part 12 into the curved surface 12 with the same curvature as the curved surfaces 13 and 14 without providing the bulging part 12 as in the second embodiment. In that case, the urging force of the elastic body S is adjusted as in the second embodiment.

(Action / Effect)
Also in the present embodiment, as in the first embodiment and the second embodiment, a locked state is formed in momentary and rapid movement operations that are not a worker's crash, for example, temporary physical operations such as turning and squatting. Compared to a fall, it is configured such that a locked state is easily formed in a state where the belt-like rope is continuously drawn out.

[Modification]
In each of the above-described embodiments, the engaged portion may be provided by recessing any position on the outer periphery of the ratchet wheel 1 without providing the protruding portion 10. In that case, the bulging portion 12 is provided on the opposite side across the engaged portion and the through hole.

  While the preferred embodiments of the belt-like rope winder according to the present invention have been illustrated and described above, it should be understood that various modifications can be made without departing from the technical scope of the present invention. Let's go.

The structure of the belt-shaped rope winder according to the present invention can prevent the interlock operation even in the case of a momentary and sudden movement operation where the operator is not crashed, for example, in the case of movement such as turning or squatting, It can be widely used as an auxiliary tool for a safety belt for preventing a high altitude crash.

1 Ratchet wheel 10 Projection 10a Tip
11a engaged portion 12 bulging portion 2 drum 3 ratchet 30 lock piece 30a tip 31 actuating piece 34 inner surface 4 belt-like rope L lanyard S elastic body X winder

Claims (11)

A case body having an opening through which a belt-like rope can pass;
A winding drum on which a belt-like rope that is held inside the case body and is fed out or wound up from the opening is wound;
A spring for urging the drum in the winding direction;
A ratchet wheel that rotates in response to the rotation of the winding drum and is provided with a protruding portion and an engaged portion;
The ratchet wheel is provided at any position around the ratchet wheel, has a ratchet rotation shaft, and the ratchet rotation shaft serves as a rotation center, and one of the operation piece as one end and the lock piece as the other end of the ratchet wheel. A ratchet that rotates close to the outer edge;
An elastic member that biases the operating piece of the ratchet toward the ratchet wheel,
The lock piece approaches the ratchet wheel by pushing the operating piece in a direction away from the ratchet wheel against the urging force by rotation of the ratchet wheel corresponding to the feeding of the belt-like rope. ,
The rotation of the ratchet wheel is stopped by engagement of the lock piece with the engaged portion, whereby rotation of the winding drum in the feeding direction of the belt-like rope is stopped,
The said engaged part is provided in the position adjacent to the rotation direction of the said ratchet wheel when the said strip | belt rope is extended | stretched with respect to the said protrusion part. A case body having an opening through which a belt-like rope can pass;
A winding drum on which a belt-like rope that is held inside the case body and is fed out or wound up from the opening is wound;
A spring for urging the drum in the winding direction;
A ratchet wheel that rotates in response to the rotation of the winding drum, and is provided with a bulging portion and an engaged portion;
The ratchet wheel is provided at any position around the ratchet wheel, has a ratchet rotation shaft, and the ratchet rotation shaft serves as a rotation center, and one of the operation piece as one end and the lock piece as the other end of the ratchet wheel. A ratchet that rotates close to the outer edge;
An elastic member that biases the operating piece of the ratchet toward the ratchet wheel,
The lock piece is moved to the ratchet wheel by the rotation of the ratchet wheel corresponding to the feeding of the belt-like rope, and the bulging portion pushes the operating piece away from the ratchet wheel against the urging force. Close
The rotation of the ratchet wheel is stopped by engagement of the lock piece with the engaged portion, whereby rotation of the winding drum in the feeding direction of the belt-like rope is stopped,
The engaged portion is directed in a direction opposite to the rotation direction of the ratchet wheel when the belt-like rope is extended with respect to the protrusion, and a central angle of 0 ° to 90 ° with respect to the rotation center of the ratchet wheel. A wind rope winder installed at any position in the range. A case body having an opening through which a belt-like rope can pass;
A winding drum on which a belt-like rope that is held inside the case body and is fed out or wound up from the opening is wound;
A spring for urging the drum in the winding direction;
A ratchet wheel that is fixed to one side surface of the winding drum, rotates in response to the rotation of the winding drum, and includes a protruding portion and an engaged portion;
The ratchet wheel is provided at any position around the ratchet wheel and has a ratchet rotation shaft that supports the middle of the ratchet wheel so as to be swingable. The operation piece as one end and the lock piece as the other end with the ratchet rotation shaft as a rotation center And a ratchet that swings so that one of them is close to the outer edge of the ratchet wheel,
An elastic member that urges the operating piece of the ratchet in a direction in contact with the outer periphery of the ratchet wheel;
The lock piece is engageable with the engaged portion of the ratchet wheel, and in the engaged state, the rotation of the belt-like rope of the winding drum is prevented from rotating.
The operating piece is in contact with the protrusion of the ratchet wheel;
The ratchet is urged by the elastic member toward the direction in which the tip of the operating piece contacts the outer periphery of the ratchet wheel,
The said engaged part is provided in the position adjacent to the rotation direction of the said ratchet wheel when the said strip | belt rope is extended | stretched with respect to the said protrusion part. A case body having an opening through which a belt-like rope can pass;
A winding drum on which a belt-like rope that is held inside the case body and is fed out or wound up from the opening is wound;
A spring for urging the drum in the winding direction;
A ratchet wheel that is fixed to one side surface of the winding drum, rotates in response to the rotation of the winding drum, and includes a protruding portion and an engaged portion;
The ratchet wheel is provided at any position around the ratchet wheel and has a ratchet rotation shaft that supports the middle of the ratchet wheel so as to be swingable. The operation piece as one end and the lock piece as the other end with the ratchet rotation shaft as a rotation center And a ratchet that swings so that one of them is close to the outer edge of the ratchet wheel,
An elastic member that urges the operating piece of the ratchet in a direction in contact with the outer periphery of the ratchet wheel;
The lock piece is engageable with the engaged portion of the ratchet wheel, and in the engaged state, the rotation of the belt-like rope of the winding drum is prevented from rotating.
The operating piece is in contact with the protrusion of the ratchet wheel;
The ratchet is urged by the elastic member toward the direction in which the tip of the operating piece contacts the outer periphery of the ratchet wheel,
The said engaged part is provided in the position adjacent to the rotation direction of the said ratchet wheel when the said strip | belt rope is extended | stretched with respect to the said protrusion part. A case body having an opening through which a belt-like rope can pass;
A winding drum on which a belt-like rope that is held inside the case body and is fed out or wound up from the opening is wound;
A spring for urging the drum in the winding direction;
A ratchet wheel that is fixed to one side surface of the winding drum, rotates in response to the rotation of the winding drum, and includes a protruding portion and an engaged portion;
The ratchet wheel is provided at any position around the ratchet wheel and has a ratchet rotation shaft that supports the middle of the ratchet wheel so as to be swingable. The operation piece as one end and the lock piece as the other end with the ratchet rotation shaft as a rotation center And a ratchet that swings so that one of them is close to the outer edge of the ratchet wheel,
An elastic member that urges the operating piece of the ratchet in a direction in contact with the outer periphery of the ratchet wheel;
The lock piece is engageable with the engaged portion of the ratchet wheel, and in the engaged state, the rotation of the belt-like rope of the winding drum is prevented from rotating.
The operating piece is in contact with the protrusion of the ratchet wheel;
The ratchet is urged by the elastic member toward the direction in which the tip of the operating piece contacts the outer periphery of the ratchet wheel,
The engaged part is a single strip rope winder. The belt-shaped rope winder according to any one of claims 1 to 5, wherein the engaged portion is a concave portion formed by the protruding portion and an outer peripheral portion of the ratchet wheel. The belt-like rope winder according to any one of claims 1 to 6, wherein the protruding portion and the opposite side across the rotation center of the ratchet wheel are convex bulged curved surfaces. The band shape according to claim 1, wherein the protrusion and the curved surface on the opposite side across the center of rotation of the ratchet wheel have a larger curvature than the other portions excluding the protrusion. Rope winder. A rotatable winding drum that winds a belt-shaped rope by being energized in the winding direction by a spring spring inside the winding case, and a ratchet wheel that is fixed to one side surface of the winding drum and has a protrusion on the outer periphery And a belt-like rope winder provided with a ratchet that is supported in a swingable manner around the ratchet wheel,
The protrusion of the ratchet wheel is single;
The ratchet is engaged with the protruding portion of the ratchet wheel at one end, and a lock piece that prevents rotation of the belt-like rope in the extending direction of the winding drum in the engaged state, and the other end An action piece that is in contact with the outer periphery of the ratchet wheel, and the ratchet is urged by an elastic member in a direction in which the tip of the action piece comes into contact with the outer periphery of the ratchet wheel,
The winding drum is rapidly rotated in the feeding direction of the belt-like rope, and the protruding portion swings the locking piece by the action of kicking up the inner surface facing the ratchet wheel of the working piece, and the tip of the locking piece A belt-like rope winder that prevents the winding drum from rotating in the feeding direction of the belt-like rope by the engagement of the engaged portion adjacent to the protruding portion with respect to the belt. A winding drum provided with a hook at one end and a belt-like rope provided with a connecting portion with a safety belt at the other end, and urged in the winding direction of the belt-like rope;
A ratchet wheel that is coaxial with the winding drum, correspondingly rotates and stops, and has a bulging portion that forms a convex curved surface as a whole, and an engaged portion that forms a concave curved surface;
One of the one end and the other end is provided at any position around the ratchet wheel, with the ratchet rotation shaft provided at a position between the one end and the other end as a rotation center. A ratchet that rotates close to the outer edge of the ratchet wheel;
An elastic member that biases the one end of the ratchet toward the ratchet wheel,
When the other end engages with the engaged portion, rotation of the ratchet wheel is stopped,
In the outer edge of the ratchet wheel, the engaged portion is provided on the opposite side across the bulging portion and the rotation center of the ratchet wheel.   A lanyard having the belt-like rope winder according to claim 1.