JP3880970B2 - Rope fixture - Google Patents

Description

  The present invention relates to a rope fixing tool that can be used as, for example, a master rope tensioner.

  In high-altitude work sites such as power transmission line construction, civil engineering construction work, painting work, etc., as shown in FIG. 6, a master rope 1 (made of synthetic fiber or cotton) is placed between opposing master rope struts 8 (only one side is shown). A rope) is stretched horizontally, and a lifeline 9 connected to the waist belt of the worker is hung on the master rope 1 to prevent the worker from falling and to work safely at high places.

  At this time, a master rope tensioner (rope fixing tool) for horizontally stretching the master rope 1 is used. As an example of this type of rope fixing tool, the applicant has disclosed Japanese Patent No. 3134054 (Patent Document 1) and the like. Has several patents and utility models.

  Briefly explaining the rope fixing tool, a rope receiving portion for receiving and supporting the rope on the main body and a rope pressure contact body facing the rope receiving portion are provided, and the tip pressure contact surface of the rope pressure contact body and the rope receiving portion are provided. A rope (master rope) insertion gap is formed between them, and the pressure contact surface of the rope pressure welder is provided with a locking projection of a pitch that matches the shape and pitch of the stranded thread of the rope. A surface is provided so as to be rotatable toward the rope receiving portion, the insertion gap is formed between the pressure contact surface of the rope pressure contacting body and the rope receiving portion, and the rope pressure contacting body is rotated in a direction to narrow the width of the insertion gap. An urging spring is provided, and the shape of the pressure contact surface of the rope pressure contact body is formed such that the insertion gap width for sandwiching the rope by the rotation of the rope pressure contact body gradually becomes narrower.

  Then, the rope can be inserted into the insertion gap by rotating the rope pressure contact body in a wide direction against the urging force of the spring, and the rope is pulled in the opposite direction to the rope insertion direction. The abutting rope pressure contact member rotates in the direction of narrowing the insertion gap, and the pressure contact surface of the rope pressure contact member presses the rope received and supported by the rope receiving portion so that it cannot be pulled out.

Japanese Patent No. 3134054

  The present invention relates to an improvement of such a rope fixing tool, and by applying a very simple improvement, the rope is strongly pulled in the direction opposite to the rope insertion direction, and the rope is pressed by the rope pressure contact body and the rope receiving portion. It is an object of the present invention to provide a very safe and innovative rope fixing tool that exhibits excellent rope fixing strength in a state where the cable is strongly crushed.

  The gist of the present invention will be described with reference to the accompanying drawings.

  A main body 3 having a rope receiving portion 2 for receiving and receiving the rope 1 is provided with a rope pressure contact body 4 so as to be rotatable in a state of being opposed to the rope reception portion 2, and the rope reception portion 2 and the rope pressure contact body 4 The rope 1 is configured such that the rope 1 can be clamped and fixed, and the rope pressure contact 4 is configured such that the rope insertion gap 5 between the rope pressure contact 4 and the rope receiving portion 2 is gradually narrowed by the rotation of the rope pressure contact 4. The rope pressure contact body 4 is provided with an elastic body that urges the rope insertion gap 5 in the rotation direction in which the rope insertion gap 5 becomes narrow and resists the rotation direction in which the rope insertion gap 5 becomes wide. The rope 1 can be inserted into the rope insertion gap 5 by rotating the rope insertion gap 5 in a wide direction, and the rope 1 is pulled in the direction opposite to the rope 1 insertion direction. The abutting rope press contact 4 is inserted into the rope. The rope fixing tool is configured to rotate in the direction of narrowing the gap 5 so that the pressure contact surface 40 of the rope pressure contact body 4 presses the rope 1 received and supported by the rope receiving portion 2 so that it cannot be pulled out. Thus, a plurality of locking projections 6 that are locked in the twist groove 1B between the ridges 1A of the rope 1 are arranged in parallel in the rotational direction of the peripheral surface of the rope pressure contact 4 on the pressure contact surface 40 of the rope pressure contact 4. When the rope 1 of the rope insertion gap 5 is strongly pulled in the direction opposite to the rope 1 insertion direction and the rope press contact body 4 is rotated by a position shift in the direction of narrowing the rope insertion gap 5. The parallel arrangement interval of the locking projections 6 at the strong pressure contact portion 40A of the pressure contact surface 40 in contact with the rope 1 is set wider than the parallel arrangement interval of the locking projections 6 at the other pressure contact surface 40 portions. The present invention relates to a rope fixture characterized by being set.

  Further, the wide parallel spacing of the locking projections 6 in the strong pressure contact portion 40A of the pressure contact surface 40 is crushed by the strong pressure contact portion 40A when the rope 1 is strongly pulled in the direction opposite to the rope 1 insertion direction. The rope fixing tool according to claim 1, wherein the distance between the ropes 1A 'of the rope 1 extended and deformed in the length direction of the rope 1 is set to a parallel interval substantially matching the pitch.

  Further, when the rope 1 is inserted into the rope insertion gap 5, the interval between the engaging projections 6 at the normal pressure contact portion 40B of the pressure contact surface 40 that comes into contact with the rope 1 is the ridge 1A of the rope 1. The parallel arrangement interval is set so as to substantially match the pitch, and when the rope 1 is strongly pulled in the direction opposite to the direction in which the rope 1 is inserted, the locking projections 6 are arranged in a wide range at the strong pressure contact portion 40A that contacts the rope 1. The installation interval is set to a parallel installation interval that substantially matches the pitch of the ridge 1A 'of the rope 1 that is crushed by the strong pressure contact portion 40A and extended and deformed in the length direction of the rope 1. The rope fixture according to any one of 1 and 2 is concerned.

  In addition, at least at the strong pressure contact portion 40A of the pressure contact surface 40, a locking projection 7 that locks against the ridge 1A of the rope 1 is formed between the locking protrusions 6 that are arranged side by side. It concerns on the rope fixing tool of any one of Claims 1-3.

  Since the present invention is configured as described above, for example, when applied to a master rope tensioner, the rope insertion gap is narrowed and the rope (master rope) is flattened when the worker with the lifeline falls and the rope insertion gap narrows. However, in the strong pressure contact portion that flatly crushes this master rope, the locking convex portions are arranged in parallel at a wider interval than the parallel intervals of the locking convex portions in the other pressure contact surface portions. The locking projections arranged side by side at a wide parallel interval are easily locked to the twisted grooves of the extended and deformed portion, and the master rope locking and fixing action is reliably exhibited, Can be fixed very firmly in the retaining state.

  In other words, when a very strong pulling force in the horizontal direction is applied to the master rope due to the fall of the worker, the safety and reliability can be demonstrated by exhibiting an extremely good rope locking and fixing action to prevent the worker from falling. It becomes a high rope fixing tool, and the present invention can be constructed by simply changing the structure (improvement) of the conventional rope pressure contact body, making it easy to realize and excellent in mass productivity. It is an innovative rope fixing tool (master rope tensioner) that excels in nature.

  Further, in the invention according to claim 2, each of the locking projections arranged in parallel at a wide parallel interval can be reliably locked to the twisted groove of the portion deformed by being crushed and extended. The rope locking and fixing action by the locking projection can be reliably exerted on the rope deformed by pressure contact, so when applied to the master rope tensioner, it exhibits extremely excellent safety when the operator falls. It becomes a rope fixture with a configuration that is more practical.

  Further, in the invention according to claim 3, even if the rope is pressure-fixed and fixed at the normal pressure contact portion or the rope is firmly pressed and fixed at the strong pressure contact portion, the strong rope locking and fixing action is surely exhibited. It can be used as a rope fixture with an extremely practical configuration.

  Further, in the invention described in claim 4, the rope fixing tool having a configuration excellent in practicality that exhibits a stronger rope locking and fixing action.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention that are considered suitable (how to carry out the invention) will be briefly described with reference to the drawings, illustrating the operation of the present invention.

  For example, the product of the present invention can be used as the master rope tensioner A.

  Specifically, a master rope (rope 1) in which the rope fixing tool of the present invention is fixed is installed between the opposing master rope struts 8.

  For example, a lifeline 9 is slidably provided on the master rope 1, and this lifeline 9 is connected to an operator's waist belt, for example, to prevent the operator from falling and to ensure work safety. The tension of the master rope 1 is performed, for example, by pulling one end portion of the master rope 1 fixed by the rope fixture of the present invention.

  One end portion of the master rope 1 is connected to the rope insertion gap 5 between the rope receiving portion 2 and the rope press contact body 4 provided in a state of being opposed to the main body 3, and the rope press contact body 4 in a direction in which the rope insertion gap 5 becomes wider. Is inserted while rotating against the urging force of the elastic body, and the pressure contact surface 40 of the rope pressure contact body 4 is brought into pressure contact with one end portion of the inserted main rope 1 so that the rope pressure contact body 4 and the rope receiving portion are 2 and sandwich and fix the master rope 1.

  Then, the state where the pressure contact surface 40 of the rope pressure contact body 4 presses the master rope 1 is maintained by the urging force of the elastic body, and a plurality of the pressure contact surfaces 4 (pressure contact surface 40) are arranged in parallel in the rotational direction. The engaging projection 6 to be engaged is engaged with the twist groove 1B between the ridges 1A of the master rope 1 and this rope fixed state is maintained.

  Further, when the rope press-contact body 4 is subjected to a pulling load on the master rope 1 in the direction opposite to the direction of insertion of the master rope 1, that is, a force for pulling the master rope 1 in the horizontal direction, the press-contact surface 40 and the locking projection 6 are It acts so as to press the master rope 1 more strongly, the master rope 1 press-fixing action by the rope press contact body 4 works strongly, and the master rope 1 is firmly fixed. Therefore, the master rope 1 is not pulled in the direction opposite to the direction of inserting the master rope 1 and the strong tension state of the master rope 1 can be maintained.

  When the tensioned master rope 1 is further strongly tensioned or when the slack parent rope 1 is tensioned and stretched, one end of the master rope 1 inserted through the rope insertion gap 5 is connected to the parent rope 1 insertion direction. Pull on. Then, the rope press-connecting body 4 rotates in a direction away from the master rope 1 against the urging force of the elastic body, the fixed state of the master rope 1 is released, and the master rope 1 is pulled in its insertion direction. can do. Then, when the master rope 1 is released, the pressure contact surface 40 of the rope press contact body 4 presses the master rope 1 received and supported by the rope receiver 2 by the restoring force of the elastic body, and the master rope 1 is sandwiched and fixed again. The master rope 1 is firmly stretched in the horizontal direction.

  Moreover, when the worker who attached the lifeline 9 falls and a very strong pulling force is applied to the master rope 1 in the direction opposite to the direction of insertion into the rope insertion gap 5, the movement of the master rope 1 is accompanied. The rope pressure contact body 4 is also rotated in a direction to further narrow the rope insertion gap 5, and the master rope 1 is flattened by the strong pressure contact portion 40A of the pressure contact surface 40 of the rope pressure contact body 4.

  Then, the crushed part of the master rope 1 is deformed so as to extend in the length direction of the master rope 1. However, in the strong pressure contact part 40A that flatly crushes the master rope 1, other pressure welding is performed. Since the locking projections 6 are arranged in parallel at a wider interval than the arrangement interval of the locking projections 6 in the surface 40 region, the respective locking projections 6 arranged in parallel at this wide alignment interval are It becomes easy to latch with respect to the twist groove | channel 1B of the site | part which was crushed and extended and deformed.

  Therefore, for example, in the structure where the locking projections 6 are arranged at regular intervals (for example, the interval matching the pitch of the ridge 1A of the rope 1) over the entire pressure contact surface 40, Since the juxtaposed pitch of the locking projections 6 does not match the pitch of the twisted ridges 1A 'of the rope 1 that has been rolled and deformed, a locking projection 6 that cannot be locked to the twisting groove 1B is also generated, and the locking force to the rope 1 is generated. However, in the strong pressure contact portion 40A of the present invention, the locking projections 6 are arranged in parallel at a wide interval, so that the locking projections 6 of the strong pressure contact portion 40A are arranged on the master rope 1. It is easy to lock in correspondence with the twisted groove 1B between the rolled ridges 1A ', and the lock rope 1 can be securely locked by the lock protrusion 6 to securely hold the lock rope 1 securely. It can be fixed to the state. Therefore, even when a very strong pulling force in the horizontal direction acts on the master rope 1 due to the fall of the worker, an extremely good rope 1 locking and fixing action can be exhibited to prevent the worker from falling. It is an innovative and reliable rope fixture.

  Further, for example, the wide parallel spacing of the locking projections 6 in the strong pressure contact portion 40A of the pressure contact surface 40 is caused by the strong pressure contact portion 40A when the rope 1 is strongly pulled in the direction opposite to the rope 1 insertion direction. It can also be set to a parallel arrangement interval that substantially matches the pitch of the ridges 1A ′ of the rope 1 that has been crushed and extended in the length direction of the rope 1, and if configured in this way, Since each locking projection 6 to be installed is securely locked to the twisted groove 1B of the portion that has been crushed and extended and deformed, the rope 1 (master rope) at the strong pressure contact portion 40A The locking action of each locking projection 6 with respect to the twisting groove 1B between the twisted ridges 1A 'is exerted very well, and the rope 1 locking and fixing action is reliably exerted, and the rope 1 is more firmly fixed in the retaining state. It will be possible.

  Moreover, if the rope press-contacting body 4 is separated from the rope receiving part 2 against the biasing force of the elastic body, the fixed state of the master rope 1 can be released or loosened.

  Further, the present invention can be easily designed and realized by applying a simple structural change to the conventional rope pressure contact body, and is excellent in mass productivity.

  Further, for example, when the rope 1 is inserted into the rope insertion gap 5, the parallel arrangement interval of the locking projections 6 at the normal pressure contact portion 40 </ b> B of the pressure contact surface 40 that contacts the rope 1 is a ridge of the rope 1. It is set to a parallel arrangement interval that substantially matches the pitch of 1A, and when the rope 1 is strongly pulled in the direction opposite to the rope 1 insertion direction, the locking convex portion 6 at the strong pressure contact portion 40A that contacts the rope 1 If the wide parallel arrangement interval is set to a parallel arrangement interval that substantially matches the pitch of the ridge 1A 'of the rope 1 that is crushed by the strong pressure contact portion 40A and extends and deformed in the length direction of the rope 1, the rope 1 Even when the rope 1 is pressed and fixed at the normal pressure contact portion 40B, or the rope 1 is firmly pressed and fixed at the strong pressure contact portion 40A, the locking protrusions 6 arranged side by side are securely engaged with the twist groove 1B of the rope 1. Stop and secure a strong rope 1 locking and fixing action So it is more reliable.

  Further, for example, at least at the strong pressure contact portion 40A of the pressure contact surface 40, if a locking projection 7 that locks against the ridge 1A of the rope 1 is formed between the locking protrusions 6 arranged side by side, The locking projection 6 is locked to the twisting groove 1B of the rope 1, and the locking projection 7 is locked to the twisting ridge 1A to exert a very strong rope locking and fixing action. .

  Specific embodiments of the present invention will be described with reference to the drawings.

  This embodiment is applied to the master rope tensioner A.

  A main body 3 having a rope receiving portion 2 for receiving and receiving the rope 1 is provided with a rope pressure contact body 4 so as to be rotatable in a state of being opposed to the rope reception portion 2, and the rope reception portion 2 and the rope pressure contact body 4 The rope 1 is configured to be clamped and fixed.

  Specifically, as shown in FIG. 1, the main body 3 has a configuration in which two substrates 3A are provided to face each other at a predetermined interval, and between the one end portions (right end portion in the drawing) of the two substrates 3A. The rope receiving part 2 is fixed to.

  The rope receiving part 2 is made of metal and is formed in a substantially disc-like body having a slight thickness. Moreover, the side part located inside (drawing left side) with respect to the main body 3 of this rope receiving part 2 is made into the receiving surface 2A which receives and supports a rope.

  The rope pressure contact body 4 is also made of metal. The rope pressure contact body 4 is configured as a substantially fan-shaped plate-like body, and the base portion is pivotally attached to a pivoting portion 10 (pivoting shaft) constructed between two substrates 3A in the middle of the main body 3. The pressure contact surface 40, which is an arc-shaped outer peripheral surface of the rope pressure contact body 4, is provided so as to be rotatable with respect to the receiving surface 2A of the rope receiving portion 2. That is, in this embodiment, the rope receiving portion 2 and the rope press contact body 4 are configured to face each other in the lateral direction.

  Further, the rope pressure contact body 4 is configured such that the rope insertion gap 5 between the rope pressure contact body 4 and the rope receiving portion 2 is gradually narrowed by the rotation of the rope pressure contact body 4.

  Specifically, in the rope pressure contact body 4, the distance between the arc outer peripheral surface which is the pressure contact surface 40 and the pivoting portion 10 increases from the one end portion of the pressure contact surface 40 to the other end portion. When the rope pressure contact body 4 is rotated in one direction, the rope insertion gap 5 becomes narrower, and when it is turned in the other (reverse) direction, the rope insertion gap 5 becomes wider. Yes.

  More specifically, the distance between the pressure contact surface 40 and the pivoting portion 10 is set to a fan shape that becomes longer from the upper side to the lower side in FIG. 1, and when the rope pressure contact body 4 is rotated upward in the figure, the rope The insertion gap 5 becomes narrower, and the rope insertion gap 5 becomes wider when rotated downward.

  The rope pressure contact body 4 includes an elastic body (not shown) that urges the rope insertion gap 5 in the rotational direction in which the rope insertion gap 5 becomes narrow and resists the rotational direction in which the rope insertion gap 5 widens. The body 4 (pressure contact surface 40) is configured to be biased and held in the state of being close to the rope receiving portion 2 (receiving surface 2A).

  Therefore, the rope pressure contact body 4 is rotated in a direction against the urging force of the elastic body so that the rope insertion gap 5 is wide enough to allow the rope 1 to pass, so that the rope 1 is inserted into the rope insertion gap 5 from above the main body 3. The rope 1 is clamped and fixed by the rope receiving portion 2 and the rope pressure contact body 4 by bringing the pressure contact surface 40 of the rope pressure contact body 4 into contact with the inserted rope 1 by the urging force of the elastic body. It is set as the structure which becomes a removal prevention state upwards in a figure (refer FIG. 3).

  Further, in this rope fixed state, when the rope 1 insertion tip is pulled downward of the main body 3, the rope pressure contact body 4 that is in contact with the rope 1 insertion tip by the urging force of the elastic body moves downward. The rope 1 is rotated in a wide direction (downward) against the urging force of the elastic body due to friction with the rope, so that the rope 1 can be further pulled down and tensioned, but in the direction opposite to the rope 1 insertion direction (upward) When the rope 1 is pulled, the rope pressure contact body 4 abutting on the rope 1 tries to rotate in the direction of narrowing the rope insertion gap 5 due to friction with the rope 1, thereby the pressure contact surface of the rope pressure contact body 4. 40 is constructed so that the rope 1 supported and supported by the rope receiving portion 2 is pressed more strongly to be in a state where it cannot be pulled out firmly.

  In this embodiment, on the pressure contact surface 40 of the rope pressure contact body 4, a locking convex portion 6 that is locked to the twist groove 1 </ b> B between the twisted ridges 1 </ b> A of the rope 1 is arranged in the rotational direction of the peripheral surface of the rope pressure contact body 4. A plurality of juxtapositions are provided.

  Specifically, as shown in FIG. 2, the locking protrusion 6 is formed in a protruding line having a length in the width direction of the pressure contact surface 40 (the thickness direction of the rope pressure contact body 4). In addition, the locking projection 6 is configured to be inclined with respect to the length direction of the pressure contact surface 40 (the direction in which the rope 1 is inserted) corresponding to the arrangement direction of the twisting groove 1B of the rope 1. . Since the locking projections 6 are formed in an oblique state in this way, the locking projections 6 positioned at the upper and lower ends of the pressure contact surface 40 in the drawing are projections having no length.

  Moreover, this latching convex part 6 is shape | molded integrally, for example in the case of the rope press-contact body 4 shaping | molding by lost wax etc., and mass-productivity is improved.

  In addition, the pressure contact surface 40 including the locking convex portion 6 is formed in a concave groove shape that matches the outer shape of the rope 1 so that the rope 1 clamped and fixed by pressing is not easily displaced laterally or detached. It is composed.

  Further, in this embodiment, the rope 1 of the rope insertion gap 5 is strongly pulled in the direction opposite to the rope 1 insertion direction, and the rope press contact body 4 is rotated by a position shift in the direction of narrowing the rope insertion gap 5. In this case, the parallel arrangement interval of the locking projections 6 at the strong pressure contact portion 40A of the pressure contact surface 40 that contacts the rope 1 is wider than the parallel arrangement interval of the locking projections 6 at the other pressure contact surface 40 portions. The interval is set.

  Specifically, the wide parallel spacing of the locking projections 6 at the strong pressure contact portion 40A of the pressure contact surface 40 is such that when the rope 1 is strongly pulled in the direction opposite to the rope 1 insertion direction, the strong pressure contact portion 40A. Is set to a parallel arrangement interval that substantially matches the pitch of the ridges 1A ′ of the rope 1 that has been crushed and deformed to extend in the length direction of the rope 1.

  Further, when the rope 1 is inserted into the rope insertion gap 5, the interval between the engaging projections 6 at the normal pressure contact portion 40B of the pressure contact surface 40 that comes into contact with the rope 1 is the ridge 1A of the rope 1. It is set to a parallel interval that substantially matches the pitch.

  More specifically, as shown in FIG. 2 and FIG. 5, the portion on one side (upper side of the drawing) from the approximately middle in the length direction of the pressure contact surface 40 becomes the normal pressure contact portion 40B, and the other portion ( The portion on the lower side of the drawing is a strong pressure contact portion 40A.

  More specifically, in this embodiment, the locking projections 6 are arranged in parallel at five locations in the vertical direction of the drawing, and the pressure contact grooves 11 between the locking projections 6 are obliquely arranged. As shown in Fig. 5, among these four pressure contact grooves 11, the two strips existing in the upper normal pressure contact portion 40B are set so as to have a groove width substantially matching the pitch of the ridge 1A of the rope 1 which is hardly crushed. The two strips existing in the lower strong pressure contact portion 40A are crushed by this strong pressure contact portion 40A and the groove width substantially matches the pitch of the ridge 1A 'of the rope 1 deformed so as to extend in the length direction of the rope 1. It is set to become.

  Therefore, when the master rope tensioner A (rope fixing tool) of this embodiment is in use, the operator falls and the master rope 1 has a very strong pulling force in the direction opposite to the insertion direction of the rope insertion gap 5. When the master rope 1 is moved, the rope press-contacting body 4 is also shifted in a direction to further narrow the rope insertion gap 5, and the master rope 1 is pressed strongly against the press-contact surface 40 of the rope press-contacting body 4. The portion crushed flat by the portion 40A, and the crushed portion of the master rope 1 is deformed so as to extend in the length direction of the parent rope 1, but the strong pressure contact portion that crushes the parent rope 1 flatly In 40A, the locking projections 6 arranged side by side with a wide parallel arrangement interval are reliably locked to the twisted groove 1B of the part that has been crushed and extended and deformed (see FIG. 4). .

  For example, when the engaging projections 6 are arranged at equal intervals (for example, intervals matching the pitch of the ridges 1A of the master rope 1) over the entire pressure contact surface 40, rolling deformation is caused at the strong pressure contact portion. Since the parallel pitch of the locking projections 6 does not match the pitch of the twisted ridges 1A 'of the master rope 1, the locking projections 6 that cannot be locked to the twisting grooves 1B are also generated, and the master rope 1 is not pulled out. Although it is not, the locking force to the master rope 1 is somewhat impaired. However, according to the present embodiment, in the strong pressure contact portion 40A, the locking projections 6 are arranged in parallel at wide intervals, so that the main rope 1 is very strong in the horizontal direction due to the fall of the operator. Even when the attractive force is applied, each locking projection 6 of the strong pressure contact portion 40A is reliably locked in the twisting groove 1B between the twisted ridges 1A 'of the parent rope 1 which is rolled and deformed, so that the parent rope 1 It has a highly reliable configuration that reliably exerts the locking and fixing action and can fix the master rope 1 in a very strong retaining state and prevent the operator from dropping.

  Further, in this embodiment, at the strong pressure contact portion 40A of the pressure contact surface 40, a locking protrusion 7 that locks against the ridge 1A of the rope 1 is formed between the locking protrusions 6 that are arranged side by side. Yes.

  Specifically, a plurality of locking projections 7 are formed side by side at a predetermined interval in the length direction of the pressure contact groove 11 in the pressure contact groove 11 disposed on the upper side of the pressure contact groove 11 in the strong pressure contact portion 40A. is doing.

  More specifically, circular locking projections 7 are formed to bulge at three locations at predetermined intervals in the length direction of the pressure contact groove 11.

  Therefore, at the strong pressure contact portion 40A of the pressure contact surface 40, the locking projection 6 is locked to the twist groove 1B of the rope 1, and the locking protrusion 7 is locked to the outer surface of the twist mountain 1A. As a result, the resistance to sliding increases and a very strong rope locking and fixing action is exhibited.

  Moreover, you may form this latching protrusion 7 between the latching convex parts 6 other than having shown in the present Example.

  The present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

It is a description notched front view which shows a present Example. It is a description perspective view which shows the rope press-contacting body of a present Example. It is explanatory front sectional drawing which shows the state which the normal press-contact part in the use condition of a present Example press-contacted to the rope. It is explanatory front sectional drawing which shows the state which the strong pressure contact site | part in the use condition of a present Example press-contacted to the rope. It is explanatory drawing which shows the relationship between the state of the rope in the normal press-contact state of this example, and a strong press-contact state, and the latching convex part arranged in parallel at a normal press-contact part and a strong press-contact part. It is explanatory drawing which shows the use condition in the high place work place of a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rope 1A Twist mountain 1A 'Twist mountain 1B Twist groove 2 Rope receiving part 3 Main body 4 Rope press-contact body
40 Pressure contact surface
40A Strong pressure contact area
40B Normal pressure contact part 5 Rope insertion gap 6 Locking projection 7 Locking protrusion

Claims (4)

  A main body having a rope receiving portion for receiving and receiving a rope is provided with a rope pressure contact member so as to be rotatable in a state of being opposed to the rope reception portion so that the rope can be clamped and fixed between the rope reception portion and the rope pressure contact member. The rope pressure contact body is configured so that the rope insertion gap between the rope pressure contact body and the rope receiving portion is gradually narrowed by the rotation of the rope pressure contact body. An elastic body that is biased in the rotational direction and resists the wide rotational direction, and the rope pressure contact body is rotated in a direction in which the rope insertion gap is widened against the biasing force of the elastic body. The rope can be inserted into the rope insertion gap, and the rope is pressed in the direction opposite to the rope insertion direction, so that the rope pressure contact body contacting the rope rotates in the direction of narrowing the rope insertion gap. Pressure contact A rope fixing device configured such that a pressure contact surface presses a rope received and supported by a rope receiving portion so that the rope cannot be pulled out, and the pressure contact surface of the rope pressure contact body is engaged with a twist groove between rope ridges. A plurality of locking projections to be stopped are provided in parallel in the rotational direction of the peripheral surface of the rope pressure contact body, and the rope in the rope insertion gap is strongly pulled in a direction opposite to the rope insertion direction, and the rope pressure contact body When the gap is rotated in the direction of narrowing the rope insertion gap, the interval between the locking projections at the strong pressure contact portion of the pressure contact surface that comes into contact with the rope is set as the locking convex portion at the other pressure contact surface portion. A rope fixture characterized by being set to a parallel arrangement interval wider than the parallel arrangement interval.   The wide parallel spacing of the locking projections at the strong pressure contact portion of the pressure contact surface is crushed by the strong pressure contact portion and extended in the rope length direction when the rope is strongly pulled in the direction opposite to the rope insertion direction. The rope fixing tool according to claim 1, wherein the rope fixing tool is set at a juxtaposition interval substantially matching the pitch of the twisted ridges of the rope.   When the rope is inserted into the rope insertion gap, the parallel spacing of the locking projections at the normal pressure contact portion of the pressure contact surface that comes into contact with the rope is set to a parallel spacing that substantially matches the pitch of the ridges of the rope. When the rope is strongly pulled in the direction opposite to the rope insertion direction, the wide parallel spacing of the locking projections at the strong pressure contact portion that contacts the rope is crushed by the strong pressure contact portion and the length of the rope The rope fixing tool according to any one of claims 1 and 2, wherein the rope fixing tool is set to a parallel arrangement interval substantially matching a pitch of a twisted mountain of a rope extending and deforming in a vertical direction. 4. At least the strong pressure contact portion of the pressure contact surface is formed with a locking protrusion that locks against a twisted rope of the rope between the locking protrusions provided side by side. The rope fixture according to item 1.

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