JP3045235B1 - Length adjustment device with slack removal mechanism - Google Patents

Abstract

An object of the present invention is to provide a winding device provided with a length adjusting device, which can maintain a state in which a slack of a rope is always taken while having a constant tension. A winding device (4) on which a rope (2) is wound.
A length adjusting device capable of locking the length of the rope 2 drawn out of the rope at an arbitrary length, a rotating body 3 having an insertion passage through which the rope 2 is inserted, and winding the rope outward by rotating; The mechanism comprises a mechanism for arbitrarily switching the rotating body 3 between a fixed state and a freely rotatable state. When the rotating body 3 is in the fixed state, the lock of the rope 2 is unlocked. Rope 2 is locked,
A tension is applied to the rotating body 3 in one rotation direction to constantly absorb the slack of the rope 2 while securing a constant tension, or a ratchet that allows the rotating body 3 to rotate only in one rotation direction. A length adjustment device that allows the rope 2 to be tightened by a mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifeline, a safety belt for high places, a safety belt for raising and lowering high-rise objects and slopes, a drawstring and a tying-up string for pet dogs, a tow rope for vehicles and the like, a master rope, and a guard. The present invention relates to a length adjusting device having a slack removing mechanism such as a rope or lashing.

[0002]

2. Description of the Related Art Conventionally, lifelines, safety belts for high places, safety belts for raising and lowering high-rise objects and slopes, pulling strings and tying-up straps for pet dogs,
For towing ropes for vehicles, etc., use ropes cut to a certain length with connection fittings such as hooks attached to both ends or one end, or wind the rope in advance into a winding device equipped with a lock mechanism. From there, pull out an appropriate length of rope and lock it, then perform work, exercise, etc. within the length of the rope, or usually, as found in three-point seat belts for automobiles, A rope that can be freely moved in and out by the length of the winding device is emergency locked when a large impact load is applied, and a device that stops further pulling of the rope is used.

[0003] In a master rope, guard rope, lashing, or the like, a connection fitting such as a hook is attached to one end of a rope having a predetermined length, and a rope tensioning machine or the like can be partially tightened at the other end. Using a hook or the like with a lock mechanism attached, hook the hooks on both ends to places where a master rope, guard rope, lashing, etc. are required, and manually pull the rope passed through the lock mechanism such as a rope tensioner. It was locked and used with tension or ratchet.

[0004]

However, depending on the environment in which the pet dog or the like is carried, for example, the length of the pulling cord for a pet dog or the like is as short as possible when walking in an urban area or the like, and longer when exercising in a suburb or the like. It is desirable that the length of the drawstring is changed as follows, but it is not possible to change the length with a pullstring attached to one end of a rope cut to a certain length, even if the breeder Even if I moved around, it was extremely difficult to do the exercise I wanted in the suburbs with the drawstring attached.

In order to solve the problem, recently, a rope is wound in advance on a winding device provided with a lock mechanism, and a rope of an appropriate length is pulled out from the rope and locked. It became possible to exercise animals such as pet dogs, but the rope stopped moving in this way always maintained a certain length until the lock was released. Depending on the direction of movement, the rope may become slack, and if the slack increases, the rope may often become entangled with obstacles such as benches or pet dogs, etc., and keep the pet dog etc. in the garden etc. A similar problem occurred with the tying strap.

[0006] The tow ropes of vehicles and the like also have the above-mentioned problems. In particular, the slack generated on the ropes becomes entangled with obstacles on the running road surface or the vehicle itself.
There are many cases that lead to unexpected accidents.In order to eliminate the slack of the rope, recently the strength required for traction is required for the outer layer part, and the stretch material is used for the core and the slack is taken by the return stress of the stretch material Such ropes with a cored bag structure have appeared, but most of the stretch materials have severe stress deterioration, so they were used without ascertaining the deterioration, so the stretch material might break during towing. In some cases, such a material configuration has a disadvantage that the volume of the rope itself must be increased.

[0007] A safety belt having the same structure as that of a drawstring of a pet dog or the like is used for a lifeline, a safety belt for high places, and a safety belt for ascending and descending high-rise objects and slopes. One end of the rope of the safety belt is connected mainly to the waist of the worker, and the other end is connected to a beam near a work site such as a building construction site or a slope by using a connection fitting such as a hook. Work within the length of the rope by connecting to the aggregate or the main rope, etc., in this case, the activity range of the worker,
It is preferable to secure as large a range as possible so as not to cause a major accident when it falls, from the viewpoint of work efficiency and reducing the stress on workers.However, there is a certain range without a winding device equipped with a lock mechanism. The safety belt with the rope cut to length is very short because the length of the safety belt is set extremely short in consideration of the danger of falling. Even so, he could hardly get away from under his parent.

Further, even in a safety belt provided with a winding device having a lock mechanism, when the rope is pulled out and locked for a long time, depending on the moving direction, the rope is slackened, and the slack is entangled with construction materials around the body. Thus, the risk of occurrence of an obstacle, such as the occurrence of an obstacle, becomes extremely high, and in reality, the belt can be pulled out only about as long as a safety belt without a winding device.

Recently, a safety belt provided with an emergency lock mechanism has been provided in part, and the safety belt allows the rope to freely enter and leave under tension at all times, so that the rope can be moved when the emergency lock mechanism is impacted. The drawer has an emergency stop structure, and no slack occurs in the rope.However, since the rope is freely pulled out for the length of the rolled-up device, workers, etc. Aside from moving in the up and down direction, when moving in other directions, for example, left and right, the rope pull-out length is unlimited with respect to the movement of workers, etc., and the rope falls with the rope pulled out long. Considering the case in which it was done, it was a dangerous usage.

[0010] Further, in the main rope, guard rope, lashing, and the like, since a rope of a fixed length is used, a plurality of main ropes and guard ropes having different lengths must be prepared for each site. Even if tension is applied to the rope, the rope is often pulled only by hand and locked, so it cannot be sufficiently tensioned. Occasionally, workers were sagged by stretching, making the scaffolding of the workers unstable or causing a person leaning on the guard rope to fall.

[0011] In view of the above problems, in some parts of the guard rope or lashing, products using a winding device provided with a ratchet are circulating, but in this type of product, the products are left unwound in the winding device. Since it is structurally necessary that retightening starts to function for the first time after all the rope play has been removed, the number of turns of the ratchet gear becomes extremely large and the work becomes complicated. Because the frictional force between the ropes left behind on the rope is unexpectedly large, depending on the degree of retightening, play of the rope may remain in the winding device, and the rope may become slack when a strong force is applied. I always had sex.

An object of the present invention is to provide a lifeline, a high-altitude safety zone, a safety zone for raising and lowering high-rise objects and slopes, a pulling system for pet dogs, etc., with a winding device in which a rope of a required length is previously wound. Even after pulling out and locking a rope of the desired length in a tow rope such as a string, a tying strap, a vehicle, within the range of the length of the pulled out rope,
In accordance with the movements of workers, pet dogs, vehicles, etc., always keep the slack of the rope while maintaining a certain tension, and use the safety belt for lifelines and high places, and the safety belt for raising and lowering high rises and slopes. When a load exceeding a preset load is applied due to a fall or the like, the rope slowly slides out in a locked state when a pulling string or a tying-up string of a pet dog is used. The present invention is intended to provide a product that can reduce the impact on a worker or a worker and, in some cases, allow the worker to slowly descend to a safe or rescue point.

Further, in the case of a master rope, a guard rope, a lashing, etc., many kinds which have conventionally been required to be stocked are integrated into almost one or two kinds, and more accurate force and extremely short distance are ensured. Another object of the present invention is to provide a product which can prevent a rope jumping phenomenon by winding the rope with a controllable winding force even when the rope is wound around a winding device for storage or the like after retightening.

[0014]

In order to solve the above-mentioned problems, the invention of claim 1 uses a rope (a fiber such as a narrow belt, a braid, a braid, or a braid, a metal or a resin, or a combination thereof). In a length adjusting device which can lock the length of pulling out of the rope from the winding device on which the elongated shape having a certain length is wound, the rope is inserted inside. A rotatable body that has an insertion passageway and winds the rope outward by rotating, and a mechanism that arbitrarily switches the rotatable body between a fixed state and a rotatable state. The lock is released, and the rope is locked in conjunction with the rotatable switch, and tension is applied to the rotating body in one rotation direction, so that the slack of the rope is kept constant. Absorb all times while retaining a length adjustment device provided with a slack removing mechanism.

According to the above invention, a lifeline having a winding device in which a rope of a required length is wound in advance, a safety belt for ascending and descending a high place safety belt, a high rise object, a slope, a drawstring for a pet dog, etc. After pulling out the desired length of the rope entangled in the take-up device, such as a tie-up rope or a towing rope of a vehicle, by the operation of a pet dog or an operator, the length of the rope further changes By temporarily locking it so that it does not allow the pet or other workers to freely move or pull the vehicle within the length of the locked rope, and the rotating body generates torque in one direction. Since the tension is applied to wind the rope, the extra slack of the rope occurs when the pet dog, worker, vehicle, etc. moves a distance shorter than the length of the locked rope. A constant It is possible to absorb all the time while ensuring Ri.

According to a second aspect of the present invention, in the first aspect of the present invention, a load greater than a predetermined load is applied to the rope whose draw-out length is locked at an arbitrary length. This is a length adjusting device provided with a slack removing mechanism that allows the rope to slowly slide out while keeping the locked state.

According to the above invention, the rope temporarily locked to a desired length so that the length of the rope does not change any more, for example, the worker is likely to step off the foot and fall down, When a large load exceeding the load set in advance is applied, such as suddenly trying to start running surprised by something etc., the rope will gradually slide out in the locked state Thereby, it is possible to reduce the impact on animals such as pet dogs and workers, and to lower the workers slowly to a safe or rescue point depending on the situation.

According to a third aspect of the present invention, there is provided a length adjusting device capable of locking the length of the rope pulled out from the winding device on which the rope is wound, to an arbitrary length. It comprises a rotating body that has a passage and winds the rope outward by rotating, and a mechanism that arbitrarily switches the rotating body between a fixed state and a freely rotatable state. When the rotating body is in the fixed state, the rope is locked. It has been released, and the rope is locked in conjunction when it is turned freely, and a ratchet mechanism that can rotate only in one rotation direction works on the rotating body, and additional tightening to tighten the rope more strongly This is a length adjusting device provided with a slack removing mechanism.

According to the above invention, connection fittings such as hooks are attached to both the terminal of the rope to be pulled out and the length adjusting device provided with the slack removing mechanism of the present invention. After hooking on a place where a rope, guard rope, lashing, etc. is required, the ratchet etc. provided in the slack removal mechanism is turned slightly with a handle etc. to enable reliable retightening and equipped with a winding device Within the length of the full length of the rope
It is possible to freely set the tension length and tension strength.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the winding force of the winding device is limited to such an extent that the rope cannot be wound by itself, and a handle for winding is attached. The present invention is a length adjusting device having a slack removing mechanism, which is detachably attachable and capable of preventing a rope bouncing phenomenon caused by a winding force.

According to the invention, when the rope is released from tension and the pulled-out rope is wound up by the winding device for storing the tightly tightened parent rope, guard rope, lashing, etc. In addition, it is possible to prevent a rope bouncing phenomenon caused by a strong winding force.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the drawings.

FIG. 1 shows a product using a length adjusting device provided with a slack removing mechanism according to the present invention, for example, a lifeline, a height safety belt,
It outlines an example of the layout of the entire product such as safety belts for raising and lowering high-rise objects and slopes, pulling and tying straps for pet dogs, and tow ropes for vehicles, etc. The rope 2 pulled out from the winding device 4 is taken out from the insertion window of the case 1 in which the set is stored via the rotating body 3.

Reference numerals 50 and 51 denote rotating shafts connected to the rotating body 3 and the winding device 4, respectively, which are connected to bearings of the case 1 via ball bearings or the like.

In order to temporarily lock or release the rope 2 at a desired length, a push stud 8 which moves up and down by operating a cam system 5 from a lever 6 via a cord 7 causes The push stud 8 is provided on the upper side.
The push stud 8 locks the rope 2 by operating a pressurizing device 18 attached to the rotating body 3 shown in FIGS. The push stud 8 not only locks or unlocks the rope 2 inside the rotating body 3,
There is also an operation of switching the rotating body 3 between the fixed state and the rotating state.

In this product, if the push stud 8 can be moved up and down without fail, the mechanism is, for example, a gear driving method using an electric motor or the like.
It is possible to use a method other than the method using the cam system 5 through the lever, and to use a shape other than that shown in FIG. The shape and material of the case 1 and the positional relationship between the respective devices and components housed in the case 1 are also secured with sufficient strength to satisfy the effects of the present invention and a weight that does not hinder normal use. If the respective devices and parts can be reliably stored and functioned efficiently without impairing the object of the present invention, for example, the push studs 8 can be freely installed such that they function on the side surface of the rotating body 3. It is possible to depend on the material, shape and arrangement.

FIGS. 2 and 3 show an example of the outline of the mechanism of the rotating body 3 in the length adjusting device provided with the slack removing mechanism of the present invention. In FIG. The rewinding force of the spring or spiral spring 13 of the possible winding device 4 causes the winding force E to be as small as possible to the extent that the rope is retracted.
, The rotation of which is stopped by the push studs 8 pushed down by, for example, the cam 9 having the shaft 10 of the cam system 5 as the rotation axis.
Move freely inside as in C.

In FIG. 3, for example, when the cam 9 is tilted by the operation of the cam system 5, the push stud 8 to which the upward force is constantly applied by the spiral spring 14 shown in FIG. The rope 2 can be rotated in both directions as described above, and the rope 2 is temporarily locked at an arbitrary length by the operation of the pressurizing device 18 in the rotating body 3 shown in FIGS. The spring and the spiral spring 12 attached to the moving body 3 move back and forth like C 'by the force D to return and the force to move the pet dog or the worker or the vehicle or the like forward.

In this case, the mainspring or spiral spring 12
Is required to be greater than the spring E of the winding device 4 or the spring E of the spiral spring 13, and the magnitude of each force is determined by the length adjusting device of the present invention. It can be determined individually according to the product application used.

2 and 3, the cam 9 is connected to a spiral spring 11 having one end connected to the case 1. When the cam 7 is pulled down by pulling the cord 7, the spiral spring 11 is turned on.
When the string 7 is loosened, the cam 9 stands by the force of the helical spring 11 trying to return. However, the shape of the cam and the method of moving the cam can move the push stud 8 up and down accurately. For example, any shape such as an egg shape and any method such as a crank system are possible.

When the cam 9 is once tilted by the lever 6, the cam 9 stands up by the force of the helical spring 11 and the push stud 8 is pushed downward, so that the rotating body 3 is rotated at an unexpected time. A known means (not shown) such as a pin lock for fixing the lever 6 in a pulled state so that the rope 2 is not unlocked at the same time as stopping.
Is provided.

FIGS. 4, 5 and 6 show the pusher 8 of the length adjusting device according to the present invention, in which the rotating body 3 and the pressing device 18 are used.
4 is described from the side in FIG. 4, from the front in FIG. 5, and from the top in FIG. 6. FIG. 4 (A) shows the rotating body 3 fixed. FIG. 4B, FIG. 5 and FIG. 6 show a state in which the rotating body 3 is rotatable.

The push stud 8 is, for example, a holding portion 16 which receives a force to be constantly pulled up by two helical springs 14 attached to the case 1 and the push stud 8 by means of a screw 15 or the like, and two push studs 8. The rotating body 3 is composed of a projection 17.
The push stud 8, which is controlled to move in a direction other than the up-down direction by the flange portion, is forcibly pushed down to the position shown in FIG. Accordingly, the lower protrusion 1 of the push tack 8
7 enters the cylinder of the pressurizing device 18 attached to the rotating body 3 to stop the rotation of the rotating body 3 and
Is released, and the rope 2 can freely move back and forth in the insertion passage 19 provided in the rotating body 3.

As shown in FIG. 4B, FIG. 5 and FIG.
When the cam 9 is laid down by the rotation of the cam system 5 and the push stud 8 is pulled up, and the projection 17 is separated from the pressing device 18 and the rotating body 3, the rotating body 3 can rotate in both directions as indicated by A. In addition, the rope 2 is temporarily locked at that time by the upward pressure operation of the pressure device 18, so that it is possible to remove the slack that occurs without changing the length of the rope any more. become.

In this case, the play of the push tack 8 is controlled by the flange of the rotating body 3. For example, a guide is provided on the case 1 and the guide controls the play of the push tack 8. It is possible to use other means such as making the flange smaller, and the number of the spiral spring 14, the protrusion 17, and the pressing device 18 is described as two, but each purpose is achieved. If so, it is possible to use a number other than two, and it is also possible to omit the spiral spring 14 when the push stud 8 is moved up and down by a gear or the like.

FIGS. 7 and 8 show how the pressurizing device 18 locks the rope. In FIG. 7, the rope is unlocked and the rotation of the rotating body 3 is stopped. In the state where the rope is locked and the rotating body 3 is rotatable, the mechanism of the pressurizing device 18 attached to the rotating body 3 is similarly shown in FIG. Explanation is made from the side cross section.

The pressurizing device 18 is connected to the insertion passage 19 provided in the rotating body 3 and has an outer cylindrical portion 20 having an opening 22 which is slightly larger in height than the thickness of the rope and larger in width than opening 23. And an opening 23 that is larger in the height direction than the opening 22 and has substantially the same width as the rope.
An inner cylinder portion 21 which can freely move up and down in the outer cylinder portion 20 is formed.
4 always receives an upward pressing force, and the pressing force can be adjusted in strength by selecting the spiral spring 24 and adjusting the tightening and tightening of the screw 29.

In this case, it is possible to provide a hollow portion in the rotating body 3 to function as the outer cylindrical portion 20 without separately providing the outer cylindrical portion 20, and the inner cylindrical portion 21 achieves the object of the present invention. If sufficient strength can be maintained, it is possible to use either a cylindrical shape or a rod shape. If it is possible to constantly apply an upward pressing force to the inner cylindrical portion 21, for example, a hydraulic device or a magnet It is possible to use a method other than the spiral spring 24, and even if the pressing pressure of the spiral spring 24 is adjusted, the screw 2
In addition to 9, other methods such as a gear system are also possible.

In FIG. 7, the inner cylindrical portion 21 is pushed in the direction of arrow F by the projection 17 of the push tack 8 so that the outer cylindrical portion 2 is pressed.
0, so that the opening 23 reaches a position that covers the entire height of the opening 22 and the rope 2
Can move between the openings 22 and 23 without obstacles.

In FIG. 8, the inner cylinder 21 having the opening 23 through which the rope 2 is inserted
As a result, the rope 2 is pushed up in the direction of arrow G by the force of the spiral spring 24, whereby the rope 2 is pressed against the upper surface of the opening 22, and between the upper surface of the opening 22 and the lower surface of the opening 23. The rope 2 is temporarily locked by the frictional force, but by adjusting the pushing force of the helical spring 24 at that time, the rope 2 is locked when the frictional force exceeds an arbitrary set value. It will start to slide slowly as it is.

The push stud 8 and the pressurizing device 18 may be arranged other than the arrangement shown and described with reference to FIGS. 4 to 8, for example, the insertion passage 19 and the openings 22 and 2 on the side surface of the rotating body 3.
Other arrangements are possible, such as arranging and functioning so that 3 matches.

FIGS. 9, 10 and 11 show examples of a method of increasing the frictional force between the opening and the rope 2 and securely locking them, with reference to side sectional views of the pressurizing device 18, respectively. In each figure (A), the rope 2 has the opening 22.
(B)
Shows that the rope 2 is locked by frictional force between the opening 22 and the opening 23 when the inner cylinder 21 is pushed up in the direction of the arrow G by the spiral spring 24.

As an example of a method of increasing the frictional force, in FIG. In FIG. 10, for example, a foamed resin such as foamed polyurethane or a friction increasing material such as a leather material or a rubber material is provided in almost the same place as the place where the ridge is provided in FIG. Paste, Figure 1
In 1, a bridge 30 made of a hard material such as steel and having a width slightly larger than the width of the rope 2 and smaller than the opening 23 is provided between upper surfaces of the openings 22, and unevenness as shown in FIG. Processing or friction increasing material 2 as shown in FIG.
For example, a rubber material 31 having the same width as the bridge 30 and having elasticity is attached between the lower surfaces of the openings 22 by attaching 7, 28 or the like.
Although the structure is such that the inner cylindrical portion 21 can be moved up and down without being hindered by 31, if the purpose of improving the frictional force of the contact surface with the rope 2 is achieved, the above-described methods may be combined. It is possible to use a method other than the above, for example, a magnet.

FIGS. 12 and 13 show a length adjusting device (Claim 3) in which the above-described slack removing mechanism is partially modified so that retightening can be performed on a master rope, guard rope, lashing, or the like. And a take-up device capable of preventing a rope bouncing phenomenon (Claim 4). The cam 9 is fixed at one end by a cord 34 around a fulcrum 35 fixed to the case 1. Connected to the illustrated position of
A ratchet 36 composed of an oscillating claw 33 and a gear 32 whose center of gravity is unevenly distributed on the string side is opposed to a spiral spring or a spiral spring (not shown, the same as the spiral spring 12 in FIGS. 2 and 3) of the rotating body 3. It is connected to a rotating shaft 50 ′ provided with a handle mounting hole 37 on the surface side.

In FIG. 12, the claw 33 whose center of gravity is unevenly distributed is
The rope 34 is released from the gear 32 due to the slack of the cam 9 in the standing state, so that the rope 2 is not affected by the ratchet 36 and the rotating body 3 is released from the winding device 4 as described above. The user can freely move back and forth as indicated by arrow C.

In FIG. 13, the cam 9 laid down to operate the pressurizing device 18 pulls the string 34, so that the pawl 33 contacts the gear 32 and the ratchet 36 functions, and the rope 2 As described above, it is temporarily locked by the rotating body 3 at an arbitrary length. At this point, when the handle is attached to the handle mounting hole 37 and the rotating body 3 is rotated in the direction of arrow A ', the rope 2 Is re-tightened by being wound in the direction of arrow C ', and it becomes possible to stop re-tightening at an arbitrary point when an appropriate tension is applied. If possible, any method other than a string such as a lever or a rubber thread can be used, and a known ratchet mechanism can be used as long as the object of the present invention can be achieved.

When the longer drawn rope is wound around the winding device 4 for storage, a spring or a spiral spring (not shown, the same as the spiral spring 13 in FIGS. 2 and 3) of the winding device is returned. If the attempt is made to rely solely on the effort E, a large uncontrolled force E will attempt to wind the rope violently, which may cause the rope to jump and cause a very dangerous situation. Therefore, the force of the spring or the spiral spring 13 to return is set to such an extent that the rope cannot be wound alone, and the spring or the spiral spring 13 of the winding device 4 is set.
The handle mounting hole 38 on the opposite side
To the take-up device 4
By rotating the mainspring or spiral spring 1
A controllable take-up force E 'is generated with the assistance of the force of 3, and the rope is taken up by the force.

Incidentally, if the winding device 4 can be rotated with a controllable force, the mounting position of the handle can be set to any position of the winding device 4 other than the rotating shaft 51 '. If it is possible to generate a controllable winding force E ', it is also possible to use a means other than the handle assisted by the mainspring or the force of the spiral spring 13.

FIGS. 14 and 15 correspond to FIGS.
In the length adjusting device described in FIG. 3, the operation of the ratchet 36 is interlocked with the push tack 8 up and down. FIG. 14 shows that the rope 2 is not locked and the rotating body 3
15 shows a state in which the rope 2 is locked and the rotating body 3 is rotatable in the tightening direction by the action of the ratchet mechanism, as shown in FIGS. 12 and 13 described above. The same reference numerals are given to the same parts as.

In FIG. 14, the claw 33 whose center of gravity is unevenly distributed is
Since the string 39 is loosened by the push stud 8 in the lowered position, the rope 3 is separated from the gear 32, so that the rope 2 is not affected by the ratchet 36, and the rotating body 3 is separated from the winding device 4 as described above. The user can freely move back and forth as indicated by arrow C.

In FIG. 15, when the push stud 8 raised to make the pressurizing device 18 function pulls the string 39, the pawl 33 comes into contact with the gear 32 and the ratchet 36 functions, and the ratchet 36 shown in FIG. As described above, the rope 2 is temporarily locked at an arbitrary length by the rotating body 3 as described above, at which point a handle is attached to the handle mounting hole 37, and the rotating body 3 is moved in the direction of arrow A '. When rotated, the rope 2 is tightened by being wound in the direction of the arrow C ', and it becomes possible to stop the tightening at any time when an appropriate tension is applied.

[0052]

EXAMPLES Examples of the present invention will now be described with reference to a strength standard of 300.
A drawstring for a pet dog using a rope having a length of 5 m, which is composed of a braid with a core of nylon and a core of aramid having a core of 2.5 mm in diameter and having a diameter of 2.5 mm or more and having a core of kg or more.

A flange having a diameter of 55 mm is provided on both sides.
The rope 2 is wound on a plastic core winding device 4 having a width of 0 mm and a width of 30 mm, and one end is connected to the opposite end of a spiral spring 13 attached to the case 1. A thin metal rod was fixed through and connected to a bearing attached to the case 1 via a ball bearing to form a rotating shaft 51.

It has a flange with a diameter of 60 mm on both sides and a diameter of 4 mm.
A rotating body 3 made of a plastic core having a width of 0 mm and a width of 30 mm is attached to the right side of the winding device, and has a stronger returning force than a spiral spring attached to the winding device. The opposite end of the spring 12 is connected, and a thin metal rod is fixed through the center of the rotating body.
The rotation shaft 50 was formed by connecting to a bearing portion attached to the case 1 via a ball bearing.

Two pressurizing devices 18 are mounted inside the rotating body as shown in FIGS. 4 to 6, but the center of the width moved 10 mm to the left and right from the vertex of the circle of the core is defined as the center point. Have a square cross section with a side of 8 mm and a depth of 30 m
m two holes each one, a female screw having a diameter of 2 mm, and the center of the lower surface of the hole is pierced so as to penetrate downward through the winding core to form the outer cylindrical portion 20 of the pressure device, A rectangular hole having a cross section of 3.5 mm in height and 4 mm in width is used as the opening 22 and the insertion passage 19, and the outer cylindrical portion 20 which has been sunk in advance is formed.
4 and penetrate at the position of the core as shown in FIG. 4 so that both ends of the hole are at most two in the width direction as shown in FIGS.
10 mm is formed in a funnel shape that does not reach the opening so that it becomes 5 mm at the maximum in the height direction.
A rubber material was stuck as the friction increasing material 27 as described above.

The upper surface of a plastic square prism having a square section of 7 mm on a side and a height of 23 mm is defined by
The inner cylindrical part 21 was formed by attaching a thin rubber material on the upper surface and a metal plate on the lower surface, respectively, and the height of the inner cylindrical part 21 was 1.5 mm above the lower side of the inner cylindrical part 21.
A hole having a rectangular cross section with a width of 3 mm and a width of 3 mm is penetrated as an opening 23, and a rubber material 28
After attaching to the metal plate on the lower surface, length 15mm, diameter 7mm
The upper end of the spiral spring 24 is welded, and the lower end of the spiral spring is also welded to a similar metal plate, and inserted into the outer cylinder so that the opening surfaces of the openings 22 and 23 match each other. The screw 29 was screwed into the female screw.

A metal holding portion 16 having a width r of 25 mm and a length of 40 mm having the same r as that of the core portion of the rotating body is formed, and a square cross section having a side of 6.5 mm is formed near both ends thereof. A metal projection 17 having a length of 5 mm and having a lower cross section formed in conformity with r on the upper surface of the inner cylinder portion is formed as shown in FIG.
After being fixed to the respective positions fitted to the inner cylinder portions of the individual pressurizing devices, both ends of the holding portion 16 and the case 1 were connected to each other by two helical springs 14 to form the push studs 8.

As shown in FIGS. 4 to 6, the cam system 5 has a plastic cam rotating shaft 10 having a length of 31 mm, a width of 7 mm, and a thickness of 5 mm attached to the case 1, and the upper end of the cam when the cam stands as shown in FIG. One end of the spiral spring 11 was connected to the part, and the opposite end was connected to the case 1.

The same position of the upper end of the cam to which the spiral spring was connected and the upper end of the metal lever 6 were connected by an aramid rope having a diameter of 1 mm as shown in FIG. The cam 9 moves back and forth along the guide as shown by the arrow in FIG. 1 and temporarily stops when the cam 9 reaches the position shown in FIGS. 2 and 3. Attached to a case with open windows like that.

After the lever 6 is moved forward and the cam 9 is in the down position, the rope 2 is pulled along the insertion path 19 and pulled out from the insertion window of the case 1, and the contact portion between the rope and the pet dog is removed. In order to make it softer, it was connected to an acrylic braid having a length of 20 cm and a diameter of 5 mm, and a hook was attached to complete a drawstring for a pet dog.

[0061]

According to the first aspect of the present invention, the drawstring is released in the park by the pulling string and the tying-up string of the pet dog using the length adjusting device according to the first aspect of the present invention, as is often the case in the related art. Even if a pet dog etc. runs around and does not disturb the surroundings, even if the pet dog etc. freely exercises in a circle with the length of the string pulled out long, The drawstring is always nervous to the movement of the pet dog, etc., eliminating the situation in which the slack pullstring is entangled with obstacles such as benches and the own body such as pet dogs as seen conventionally. It can do things, and pet dogs etc. show reflexive movement when surprised by something, but at that time the length of the drawstring or tie cord is fixed and it is very large that it hangs on the collar The impact load is based on the pet dog according to the present invention. It can be reliably mitigated by the drawstring and tethered cord.

[0062] In addition, removing the slack generated on the tow rope of a vehicle or the like can prevent the rope from being hindered by obstacles on the road surface or the vehicle due to the slack. In addition to securing remarkable durability as compared to those using, the rope of the present invention can be made extremely thin compared to a rope with a cored bag structure, so it is always on the front of a jeep etc. Winch-like installation and usage is also possible.

Further, in a lifeline, a safety belt for high places, and a safety belt for ascending and descending such as a high-rise object and a slope, according to the present invention, the rope is locked at a desired length by the worker and the movement of the worker and the like. To keep moderate tension according to the
Even if the worker pulls out the rope somewhat longer within the specified range, for example, to move in the horizontal direction, the slack of the rope is entangled with construction materials scattered at the construction site etc. and projections in the middle of construction As a result, it is possible to avoid a major cause of a worker falling accident, in which a force is applied from an unintended direction.

Next, the worker falls down in the lifeline, the high-altitude safety zone, and the ascent / descent safety zone using the length adjusting device according to the second aspect of the present invention. Even so, a large impact load applied at that time is surely reduced, and in some cases, the worker is allowed to slowly descend to a safe height, thereby making a great contribution to the safety aspect of the worker.

Further, in the parent rope, guard rope or lashing using the length adjusting device according to the third aspect of the present invention, the length actually required from the winding device in which the desired length of rope is wound. By pulling out the rope and pulling it over and tensioning the rope, there is no need to bring in or stock many types of ropes of different lengths at each site, which was previously required, and furthermore By using the length adjustment device of the invention, the rope can reach the desired tension with just a slight turn of the ratchet gear, and the rope remaining in the winding device can be tightened completely ignoring the remaining play. become.

Further, when the length adjusting device according to the fourth aspect of the present invention is used, a very dangerous phenomenon that the rope jumps, which is generated when the rope is wound around the winding device for storing or the like, is generated. Can also contribute to the reduction of the stress and labor of the worker and the safety.

[Brief description of the drawings]

FIG. 1 is a side view showing a length adjusting device of the present invention.

FIG. 2 is a side view showing a main part of the length adjusting device of the present invention.

FIG. 3 is a side view showing a main part of the length adjusting device of the present invention.

FIGS. 4A and 4B are side views showing the rotating body of the present invention, wherein FIG. 4A shows a state in which the push tack is at a lowered position, and FIG.

FIG. 5 is a front view showing a rotating body of the present invention.

FIG. 6 is a top view showing the rotating body of the present invention.

FIGS. 7A and 7B are views showing a state in which the rope is unlocked and the rotation of the rotating body is stopped in the pressurizing device, wherein FIG. 7A is a front view and FIG. 7B is a side view.

8A and 8B show a state in which the rope is locked and the rotating body is rotatable in the pressing device, and FIG.
(B) is a side view.

FIG. 9 is a side view showing an example of a portion where the rope is locked in the pressurizing device, where (A) is an unlocked state,
(B) shows a locked state.

FIG. 10 is a side view showing another example of the portion where the rope is locked in the pressurizing device, where (A) is an unlocked state,
(B) shows a locked state.

FIG. 11 is a side view showing another example of a portion where the rope is locked in the pressurizing device, where (A) is an unlocked state,
(B) shows a locked state.

FIG. 12 is a side view showing a main part of a length adjusting device capable of retightening according to the present invention.

FIG. 13 is a side view showing a main part of a length adjusting device capable of retightening according to the present invention.

FIG. 14 is a side view showing a main part of another example of the length adjusting device capable of retightening according to the present invention.

FIG. 15 is a side view showing a main part of another example of the length adjusting device capable of retightening according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Rope 3 Rotating body 4 Winding device 5 Cam system 6 Lever 7 String shape 8 Push stud 9 Cam 10 Shaft 11 Spiral spring 12, 13 Spiral spring 14 Spiral spring 15 Screw 16 Holder 17 Projection 18 Pressure Apparatus 19 Insertion path 20 Outer cylinder 21 Inner cylinder 22 Opening (of outer cylinder) 23 Opening (of inner cylinder) 24 Spiral spring 25, 26 Diamond-shaped ridge 27, 28 Friction increasing material 29 Screw 30 Bridge Reference Signs List 31 rubber material 32 gear 33 claw 34, 39 string 35 fulcrum 36 ratchet 37, 38 handle mounting hole 50, 50 ', 51, 51' rotating shaft

Claims (4)

(57) [Claims] 1. An elongated shape (hereinafter referred to as a rope) having a fixed length, which is composed of a fiber such as a narrow belt, a braid, a braid, or a twisted cord, a metal, a resin, or a combination thereof. In a length adjusting device capable of fixing (hereinafter referred to as lock) the length of the rope pulled out of the taken-up winding device to an arbitrary length, the rope has an insertion passage through which the rope is inserted, and the rope is rotated by rotating. And a mechanism for arbitrarily switching the rotating body between a fixed state and a freely rotatable state. When the rotating body is in the fixed state, the lock of the rope is released, and the rotatable switching is performed. When the rope is locked in conjunction with it, and tension is applied to the rotating body in one rotation direction,
A length adjustment device equipped with a slack removal mechanism, characterized by constantly absorbing the slack of the rope while securing a constant tension. 2. When a load greater than a load preset to an arbitrary value is applied to a rope locked with an arbitrary length of the drawer, the rope slowly starts to slide while maintaining the locked state. Characterized in that
A length adjusting device comprising the slack removing mechanism according to claim 1. 3. A length adjusting device capable of locking the length of pulling out of a rope from a winding device on which the rope has been wound to an arbitrary length, wherein the length adjusting device has an insertion passage through which the rope is inserted and rotates. And a mechanism for arbitrarily switching the rotating body between a fixed state and a freely rotatable state. When the rotating body is in the fixed state, the rope is unlocked. When freely switched, the rope is locked in conjunction with it, and a ratchet mechanism that can rotate only in one rotation direction works on the rotating body, enabling additional tightening to tighten the rope more strongly A length adjustment device with a slack removal mechanism. 4. The winding force of the winding device is limited to such an extent that the rope cannot be wound by itself, and a handle for winding can be attached or detachably attached. 4. The length adjusting device with a slack removing mechanism according to claim 3, wherein the generated rope bouncing phenomenon can be prevented.