JPH0370510B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tension holding device for a rope, etc., for holding and tensioning a load fixing rope for an athletic net used for volleyball, tennis, etc., a truck, a clothesline, etc.

Nets used in athletics are suspended from ropes, etc., but such ropes must maintain an appropriate tension, and conventionally, nets such as those shown in Figures 1 to 3 equipment was in use. That is, in these figures, 21 is a bracket attached to a support post 22 that stands up on the court, and an operating shaft 23 is spanned in the horizontal direction, and a winding drum 24 that rotates integrally with this operating shaft 23 is attached. is installed. A rope fixing pin 24a protrudes from the winding drum 24, and one end of the rope is hooked onto this pin 24a, so that the rope R is wound around the outer periphery of the winding drum 24. . On the other hand, a gear 25 having sawtooth teeth is integrally attached to the operating shaft 23, and the bracket 2
1 includes a ratchet 26 that meshes with this gear 25.
is rotatably pivoted to prevent rotation of the operating shaft 23. When tensioning the rope, use the handle 2 shown in Figure 3.
7 to the rectangular operating shaft 23 and rotate it in the direction of arrow A in FIG.
The tension state was maintained by the meshing of the gear and the gear 25. On the other hand, when loosening the rope R, the operating shaft 23 is similarly rotated in the direction of the arrow A using the handle 27. This causes the ratchet 26 and the gear 25 to disengage, and the weight of the rope R causes the gear 25 to rotate in the direction of the arrow A. The rope was pulled out from the take-up drum 24 by rotating in the direction. However, since such conventional devices utilize the mesh between a ratchet and a gear, the tension of the rope can be adjusted in stages, making it difficult to make fine adjustments. It required a lot of tension and was difficult to operate. Also, even when the rope is slack, the weight of the rope will cause the gear and handle to reverse at high speed, which is dangerous, so the handle must be held by hand, and if the gear is worn out, the ratchet and This has caused inconveniences such as the ropes not meshing together and coming off carelessly, and the rope being unable to maintain tension.

The present invention has been made in view of these conventional drawbacks, and its purpose is to provide a tension holding device for a rope or the like that is steplessly adjustable and has improved operability.

The tension holding device for a rope or the like of the first invention includes a rotating shaft rotatably attached to a fixed bracket, a fixed tube fitted onto the rotating shaft and fixed to the fixed bracket, and a fixed tube connected in series with the fixed tube. A rope or the like is wound around a rotary tube that is rotatably inserted around the rotating shaft, and an outer peripheral portion that is rotatably inserted around the fixed tube and the rotary tube and linked to rotate integrally with the rotary tube. A winding drum to be rotated, an engaging means protruding inward from the inner surface of the rotating tube, and a coil portion loosely inserted into the rotating shaft and pressed against the inner surfaces of the fixed tube and the rotating tube. A coil spring having one end hook portion hooked to the engaging means and the other end side hook portion extending in the direction of the rotating shaft, and a coil spring provided on the rotating shaft and engaged with the engaging means by rotation of the rotating shaft in one direction. a winding engaging part such as a rope that collides with the coupling means and presses the hook part on one end side to reduce the diameter of the coil spring and rotate the winding drum in the same direction; It is characterized by consisting of a rewinding engagement part such as a rope that collides with the hook part on the other end side when rotated in the other direction, thereby reducing the diameter of the coil spring and freeing the rotation of the winding drum in the same direction. .

Further, the tension holding device for a rope or the like according to the second invention is rotatably attached to a fixed bracket, and has a hook portion for a rotation means such as a handle on one end side, and an operating hole arranged in a circular shape on the other end side. a winding drum around which a rope or the like is wound;
A lock releasing member is rotatably attached to the fixed bracket, and has a hooking portion for a rotating means such as a handle on one end, and a shaft portion on the other end is inserted into the operating hole, and a coil portion is attached to the lock. A coil spring is provided that is loosely inserted into the release member and is pressed against the inner surface of the operating hole, and has hook portions at both ends hooked to the fixing bracket and the shaft portion of the lock release member, respectively, and the coil spring is wound up. The coil part is provided in the coil winding direction to reduce the friction of the winding drum by reducing the diameter of the coil part when the drum rotates in the winding direction of the rope, etc., and when the coil part of the lock release member is rotated in the direction of reducing the diameter of the coil part. It is characterized in that it is provided so as to release the rotation lock in the unwinding direction of the rope, etc. of the winding drum.

Furthermore, the tension holding device for a rope or the like according to the third invention is a winding device in which the rope or the like is wound around the outer periphery of the device which is rotatably attached to the fixed bracket and has a hook portion for a rotation means such as a handle on one end side. Take drum and
a lock release member which is rotatably attached to the fixed bracket, has a hooking portion for a rotating means such as a handle on one end thereof, and has a shaft portion on the other end arranged parallel to the outside of the other end of the winding drum; and a coil spring whose coil portion is inserted in pressure contact with an actuating portion provided at the other end of the winding drum, and whose hook portions at both ends are hooked onto the shaft portions of the fixing bracket and the lock release member, respectively. The coil spring is provided in the coil winding direction so that the coil portion expands in diameter when the rope or the like of the winding drum rotates in the winding direction to reduce friction between the coil spring and the winding drum,
Further, the lock releasing member is provided so as to release the rotation lock in the unwinding direction of the rope or the like of the winding drum by rotating the coil portion of the lock releasing member in the direction of expanding the diameter.

In the first to third aspects of the invention, the coil spring is inserted or inserted into the winding drum in a press-contact state, so that the coil diameter of the coil spring increases or decreases depending on the direction of rotation of the drum. By expanding or contracting the diameter of the coil, the frictional force generated between the drum and the spring increases or decreases, and the rotation of the drum in the direction where the frictional force increases is locked, while rotation in the direction where the frictional force decreases is prevented. It becomes possible. By this,
Stepless rotation locking of the winding drum becomes possible.

An embodiment of the first invention will be specifically described below with reference to FIGS. 4 to 9.

In FIG. 4, a bracket 1 bent into a U-shape is attached to the side surface of a column 19 by screwing or welding the bottom portion. A rotating shaft 4 is horizontally suspended on the bracket 1, and a thread-shaped winding drum 9 is rotatably fitted onto the rotating shaft 4. In this embodiment, the winding drum 9 is composed of an outer tube 7 formed in a bobbin shape and an inner tube inserted into the outer tube 7, as shown in the cross-sectional view of FIG. The end of the rope R is hooked onto the outer periphery of the rope R, and the rope R is wound around it. On the other hand, the rotating shaft 4 is inserted into the inner tube of the winding drum 9, and this inner tube is rotatably attached to a fixed tube 2 fixed to the side end surface of the bracket 1 and to the right side of the fixed tube 2. The outer tube 7 is inserted so as to rotate around the inner tube formed in this way. And fixed pipe 2 of the inner pipe
The inside of the rotating tube 3 is hollow, and a coil spring 6 that is fitted around the rotating shaft 4 is inserted into this hollow portion. The outer diameter of this coil spring 6 is formed to be slightly larger than the inner diameter of either the fixed tube 2 or the rotating tube 3 that constitute the inner tube, and when inserted into the inner tube, the fixed tube 2 and rotating tube 3
The rotary tube 3 is pressed against it from the inside and acts to lock the rotary tube 3 from rotating. On the other hand, a pin 5 on which the end of the rope R is hooked is implanted in the outer tube 7 of the winding drum 9, and the lower end of this pin 5 passes through the rotating tube 3 of the inner tube. It has reached the rotating shaft 4, and one end 6 of the coil spring 6
A is hooked onto the lower end (engaging means) of this pin 5. As shown in FIGS. 7 to 9, such a rotating shaft 4 has an intermediate portion cut out in the longitudinal direction, and ears 4a (winding engagement ) and 4b (unwinding engagement part) are formed to protrude, and the other end 6b of the coil spring 6 and the lower end of the pin 5 are inserted into the notch to rotate the rotating shaft 4. As will be described later, the ears 4a and 4b act on the coil spring 6 and pin 5 to wind the rope.
The tension is getting to be done. Such rotation of the rotary shaft 4 is performed using a handle 27 or a wrench as shown in FIG. It protrudes and is formed into a rectangular shape as shown in FIG. 6, so that a handle or the like can be hung thereon. In addition, in Figure 4, 18
An E-ring is attached to the left end of the rotating shaft 4, and serves to prevent the rotating shaft 4 from coming off.

Next, the operation of tensioning the rope R in this embodiment configured as above will be explained. First, a handle or the like is hung on the right end of the rotating shaft 4, and the rotating shaft is rotated in the direction of arrow A in FIG. 6, that is, clockwise. As a result, as shown in FIG. 9, the rotating shaft 4 rotates in the direction of arrow A in the figure, and the left ear 4a abuts the lower end of the pin 5.
Press this in the same direction. For this reason, the coil spring 6, whose one end 6a is hooked to the pin 5, is rotated clockwise to reduce the coil diameter, and the pressing force against the inner tube is released. The rotary tube 3 and the outer tube 7 rotate in the same direction together with the rotating shaft, and the rope R is wound and tensioned.
Even if the rotation of the handle is stopped in this state and the handle is released, the force pressing the one end 6a of the coil spring 6 is released, and the coil diameter of the coil spring 6 expands, causing the fixed tube of the inner tube to Since the rotating tube 3 is pressed from the inside, the rotation of the rotating tube 3 is locked by the frictional force, and the rotation of the outer tube 7 is also locked by the pin 5, and the rope is held in a tensioned state. It will be done. In this case, the weight of the net attached to the rope is applied in the direction of arrow B in Figure 6, but since this is the direction in which the pressure contact force of the coil spring 6 acts as described above, the rope does not loosen. , can maintain tension.

Next, in order to loosen the rope R, this is done by rotating the rotating shaft 4 in the direction of arrow B in FIG. 6, that is, counterclockwise, using a handle or the like. As a result of this rotation, the rotating shaft 4 rotates in the direction of arrow B in FIG.
and press it in the same direction. As a result, the coil spring 6 is rotated in the direction in which the coil diameter is reduced and the lock is released, so the rotation tube 3 and the outer tube 7 rotate together with the rotation shaft 4, and the outer tube 7
The rope R wound around the shaft is gradually pulled out as the rotating shaft rotates, and the rope R is loosened.

Therefore, according to this embodiment, the winding drum is rolled by using the frictional force of the coil spring, and since the tension of the rope can be adjusted steplessly, any tension state can be easily adjusted. Obtainable. Furthermore, since the handle is always locked by the coil spring when released, the handle does not inadvertently rotate at high speed when the rope is loosened or reeled in, dramatically improving safety during operation.

Figures 10 to 14 show an embodiment of the second invention, and in this embodiment, the same parts as in the embodiment of the first invention are given the same reference numerals, and their explanations will be explained below. Although omitted, in this embodiment, the winding drum 9 rotatably attached to the bracket 1 is formed from a single tube, and the right side thereof is formed into a rectangular shape so that a handle or the like can be hung thereon. . Therefore, in this embodiment, the winding drum 9 can be directly rotated by operating the handle without a rotating shaft being attached. This winding drum 9 has a rope R
An operating hole 1 is installed in the left side of the winding drum 9 in the longitudinal direction.
0 is provided. A short shaft-shaped lock release member 11 supported by the bracket 1 is inserted into the operating hole 10 from the left end, and a coil spring 6 is inserted outside the lock release member 11 and inserted inside. It is being Similar to the embodiment described above, this coil spring 6 is wound so that its outer diameter is slightly larger than the inner diameter of the operating hole 10, and is in pressure contact with the operating hole 10 from the inside, and has one end. As shown in FIG. 13, the portion 6a is inserted into and hooked into the hook hole 11a of the unlocking member 11, and the other end portion 6b is fixed to the bracket 1. Further, the right end of the winding drum 9 and the left end of the lock release member both protrude outside the bracket 1, and are formed in a rectangular shape as shown in FIGS. 12 and 14, so that a handle or the like can be hung thereon. It is becoming more and more popular.

In the embodiment thus constructed, the rope R is tensioned by hanging a handle or the like on the right end of the winding drum 9 and rotating it in the direction of arrow A in FIG. 12. Since this direction of rotation is the direction in which the coil diameter of the coil spring 6 is reduced, a slip occurs between the take-up drum 9 and the coil spring 6, and the take-up drum 9 rotates in the same direction, causing the rope R to be taken up. It makes me nervous. Next, when the rotational force of the handle is released, the coil spring 6 presses against the operating hole 10 from the inside, and the rotation of the winding drum 9 is stopped by the frictional force. In this case, the weight of the net attached to the rope acts in the direction of rotating the winding drum 9 in the direction of arrow B, but this direction is the direction of expanding the coil diameter of the coil spring, and the frictional force of the coil spring is Because of the increasing direction, the winding drum 9 is maintained in a tensioned state without rotating.

On the other hand, when the rope R is to be loosened, a handle or the like is hung on the left end of the unlocking member 11 and the member 11 is rotated in the direction of the arrow C in FIG. As a result, one end 6a
The end portion 6a of the coil spring 6 hooked onto the lock release member 11 is rotated in the direction of arrow N in FIG. 13, so that the coil diameter of the coil spring 6 is reduced.
The pressed state is released. Therefore, the winding drum 9 is released from the locked state and becomes freely rotatable, and is rotated by the weight of the rope and the net, thereby loosening the rope.

Therefore, in this embodiment, since the coil spring is unlocked by rotating the lock release member, there is no need to rotate the take-up drum when loosening the rope, and the weight of the rope and the net allows the rope to be loosened smoothly. It also has the advantage that it can be carried out at high speed.

FIGS. 20 to 25 show still another embodiment of the second invention, in which the support column 19 is formed of a hollow prismatic column, and the side surface of the upper end thereof is The apparatus of the embodiment shown in FIGS. 10 to 14 is inserted and housed through the opening. At the right end of the winding drum and at the left end of the lock release member, respectively.
A rectangular recess is bored into the recess, into which the engaging protrusion 17a of the handle 17 shown in FIG. 25 is fitted so that the winding drum and the lock release member can be rotated. In addition, in this example, the device was installed at the top of the prism, but the device was installed at a position where the handle could be easily operated, and if necessary, the device could be installed at a position where the handle could be easily operated. It may also be used by connecting one end of the netrope to the other end. Therefore,
The operation in this embodiment is shown in FIGS. 10 to 14.
This is similar to the embodiment shown in the figure above, but in this embodiment, there is no protruding part to the outside of the support, so there is less risk of the human body hitting it, and there is less occurrence of rust, etc., and fewer breakdowns. Both also have the effect of allowing you to rewind them instantly and safely.

15 to 19 show an embodiment of the third invention, in which the winding drum 9 has a bobbin-shaped winding section 12.
and an actuating portion 13 in the form of a short shaft with a small diameter are integrally connected in the lateral direction. A pin 5 is implanted in the winding part 12 and a rope R is wound thereon, and a coil spring 6 is inserted into the actuating part 13. In this embodiment, this coil spring 6
The inner diameter of the coil is formed to be slightly smaller than the outer diameter of the actuating part 13, and the coil is in pressure contact with the actuating part 13 for pinching, and one end 6a is connected to a lock release member attached to the bracket 1. 11, and the other end 6b is hooked to the bracket 1. In this case, the lock release member 11 is attached to the bracket 1 so as to be installed alongside the winding drum 9.
As shown in FIG. 19, the left end protrudes outside the bracket 1 and has a rectangular shape. Therefore, in this embodiment as well, in order to tension the rope, it is sufficient to hang the handle on the right end of the winding drum 9 and rotate it in the direction of arrow A in FIG. The rope is moved to the actuating part 13 by the clamping force of the coil spring 6.
Due to the friction, the rotation is locked in the direction of arrow B in the same figure and does not loosen. On the other hand, when loosening this rope, the handle is unlocked by the lock release member 11.
This is done by rotating in the direction of arrow C in FIGS. 18 and 19. As a result, the coil spring 6 is pushed up in the direction of arrow D in Fig. 18, and the coil diameter expands, so that the pressure contact of the coil spring 6 is released, and the take-up drum 9 is rotated by the weight of the rope and the net, and the rope is pulled out. and relaxation takes place.

As explained above, in the first to third inventions, the tension of the rope, the maintenance of the tension, and the relaxation thereof can be adjusted using the frictional force of the coil spring, so stepless adjustment is possible and fine adjustment is possible. It is possible to provide a tension holding device for a rope or the like which is easy to adjust and can tension and relax the rope simply by operating a handle, and which is easy to operate and safe.

[Brief explanation of drawings]

Figures 1 and 2 are front and side views of the conventional example, Figure 3 is a front and side view of the handle, and Figure 4 is a front view and side view of the handle.
Figures 6 to 6 are a plan view, a sectional view, and a side view of an embodiment of the first invention, and Figure 7 is taken along the line A-A in Figure 5.
8 is a sectional view taken along line B-B of FIG. 6, FIG. 9 is an enlarged sectional view of the main part of FIG. 7, and FIGS. 10 to 12 are views of the embodiment of the second invention. A plan view, a cross-sectional view, and a right side view, FIG. 13 is a cross-sectional view taken along the line C-C in FIG. 11, FIG. 14 is a left side view, and FIGS. 15 to 17 are plane views of the third embodiment of the invention. Figure 18 is a sectional view taken along line D-D in Figure 16, Figure 19 is a left side view, Figures 20 to 22 are
The figures are a left side view, a front view, and a right side view of another embodiment of the second invention, and FIG.
FIG. 4 is a sectional view taken along the line E-E in the same figure, and FIG. 25 is a plan view, front view, and bottom view of an example of the handle used. 1...Bracket, 6...Coil spring, 9...
Winding drum, R...rope.

Claims (1)

[Scope of Claims] 1. A rotating shaft rotatably attached to a fixed bracket; a fixed tube fitted onto the rotating shaft and fixed to the fixed bracket; and a rotating shaft rotatably attached to the rotating shaft in series with the fixed tube. and a winding drum around which a rope or the like is wound around the outer periphery of the rotating tube, which is rotatably inserted into the fixed tube and the rotating tube and linked to rotate integrally with the rotating tube. an engaging means protruding inward from the inner surface of the rotary tube; a coil portion loosely inserted into the rotary shaft and pressed against the inner surfaces of the fixed tube and the rotary tube; and a hook portion on one end side. a coil spring which is latched to the engaging means and whose other end side hook portion extends in the direction of the rotating shaft; and a coil spring which is provided on the rotating shaft and collides with the engaging means when the rotating shaft rotates in one direction. and a winding engagement part such as a rope that presses the hook part on one end side to reduce the diameter of the coil spring and rotate the winding drum in the same direction; A tension holding device for a rope, etc., comprising an engaging portion for unwinding the rope, etc., which collides with the end hook portion to reduce the diameter of the coil spring, thereby freeing the rotation of the winding drum in the same direction. Device. 2. It is rotatably attached to a fixed bracket, and one end is provided with a hook for a rotating means such as a handle, and the other end is provided with a circular operating hole, and a rope, etc. is wound around the outer periphery. a winding drum; and a lock release member rotatably attached to the fixed bracket, having a hooking portion for a rotation means such as a handle on one end thereof, and having a shaft portion on the other end inserted into the operating hole. a coil spring having a coil portion loosely inserted into the lock release member and pressed against the inner surface of the operating hole, and having both end hook portions hooked to the fixing bracket and the shaft portion of the lock release member, respectively; The coil spring is provided in the coil winding direction so that the diameter of the coil part decreases when the rope or the like of the winding drum rotates in the winding direction to reduce friction with the winding drum, and the coil part of the lock release member is 1. A tension holding device for a rope, etc., characterized in that it is provided so as to release the rotation lock in the unwinding direction of the rope, etc. of a winding drum by rotation in the direction of diameter reduction. 3. A winding drum that is rotatably attached to a fixed bracket and has a hook part for a rotating means such as a handle on one end and around which a rope, etc. is wound around the outer periphery; a lock release member having a hook portion for a rotating means such as a handle on one end side and a shaft portion on the other end side disposed parallel to the outside of the other end side of the winding drum; a coil spring that is inserted in a press-contact state to an actuating portion provided on the other end side and has hook portions at both ends hooked to the fixing bracket and the shaft portion of the lock release member, respectively, and the coil spring is wound. The coil portion expands in diameter when the rope or the like of the take-up drum rotates in the winding direction to reduce friction with the take-up drum. 1. A tension holding device for a rope, etc., characterized in that it is provided so as to release the rotation lock in the unwinding direction of the rope, etc. of a winding drum by rotation in the direction.