JP2010132437A - Wire rolling-out/winding mechanism and wire entanglement preventive method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire rolling-out/winding mechanism for realizing weight reduction and high reliability of an apparatus. <P>SOLUTION: When starting rolling-out of a wire, a part of the outermost layer of the wire 13 closely wound on a base part 16 is pushed by rotation of a pulley drum 11, and is pressed to a corrugated plate-shaped member 14. Then, the outermost layer of the wire 13 is further pushed by the rotation of the pulley drum 11, and is pressed to a corrugated plate-shaped sliding member 14. The pressed wire 13 starts sliding travel on a surface of the corrugated plate-shaped sliding member 14, and is sent out to an external part of the pulley drum 11 from an opening part 12 without entanglement. Afterwards, the wire 13 wound on the base part 16 of the pulley drum 11 is similarly wholly pressed to the corrugated plate-shaped sliding member 14, and slidingly travels on its surface, and is sent out to the external part of the pulley drum 11 from the opening part 12 without entanglement. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wire unwinding / winding mechanism and a wire entanglement preventing method, and more particularly to a wire unwinding / winding mechanism using a pulley drum and a wire entanglement preventing method.

  5A is a perspective view of an example of a wire unwinding / winding mechanism, and FIG. 5B is a sectional view of a pulley drum in the wire unwinding / winding mechanism of FIG. . The wire unwinding / winding mechanism shown in FIG. 5 includes a drawing roller 3 for applying tension to the wire 1 to pull out the wire 1 from the pulley drum 2 and a transmission 4 for driving the drawing roller 3. A belt 6 is stretched between the transmission 4 and a disk provided at a predetermined position of the pulley drum shaft 5 of the pulley drum 2, and the rotational force of the pulley drum shaft 5 is transmitted via the belt 6 to the transmission. 4 and the pulley drum 2 rotates in the forward or reverse direction together with the pulley drum shaft 5.

  The wire 1 is accommodated in a pulley drum 2 of an unwinding / winding mechanism, and when the pulley drum 2 rotates, the wire 1 is developed and accommodated. Here, when the wire 1 is unwound and taken up, and particularly when the wire 1 is not tensioned at the time of unwinding, the wire 1 is fed out in the pulley drum 2 by the rotation of the pulley drum 2, and as a result, the pulley 1 In some cases, the drum 2 protrudes to the side and is entangled with the pulley drum shaft 5 or the like.

  For this reason, the drawing roller 3 rotates in the direction in which the wire 1 is pulled out, applies tension to the wire 1, and prevents the wire 1 from protruding or tangling. The pull-in roller 3 is operated in conjunction with the rotation of the pulley drum shaft 5 by power transmission means such as a belt 6. Since the unfolding speed and the storing speed of the wire 1 vary depending on the winding diameter of the wire 1 in the pulley drum 2, a transmission for adjusting the rotational speed of the drawing roller 3 in accordance with the winding diameter of the wire 1. 4.

  Patent Document 1 discloses a wire winding device including a drum and a driving device for the drum. This wire winding device detects a change in the relative inclination of the wire feeding direction and tilts the tilting frame that supports the drum unit and the guide roller, thereby making the relative inclination of the wire feeding direction constant. It is the structure to maintain.

  In Patent Document 2, a flat cable is stored in a space formed between the outer cylinder portion of the first casing and the inner cylinder portion of the second casing with the reversing portion being wound in the reverse direction. By storing a reinforcing sheet not involved in electrical connection in this space and winding it on the flat cable, the flat cable is turned into the reversing part by the reinforcing sheet when the flat cable is drawn out to the reversing part. A structure that prevents sagging during feeding is disclosed.

Japanese Patent Laid-Open No. 11-79678 JP-A-10-341521

  However, the wire unwinding / winding mechanism shown in FIG. 5 has a problem that the weight of the device is increased and the operation reliability is lowered. The first reason is that the wire lead-out portion of the pulley drum 2 needs to be equipped with a large number of accompanying parts such as a drawing roller 3 and a belt 6 for applying tension to the wire 1 and pulling it out. Because it increases.

  The second reason is that it is necessary to have a transmission 4 for synchronizing the unwinding speed and the winding speed of the wire 1 and the rotational speed of the drawing roller 3 which vary depending on the winding diameter of the wire 1 and drive. This is because the structure of the part becomes complicated.

  Further, the wire winding device described in Patent Document 1 does not include a mechanism for preventing the wire from being tangled. Patent Document 2 only discloses a structure in which the flat sheet is prevented from sagging in the middle of being fed to the reversal portion by the reinforcing sheet, and the pulley drum is rotated to wind or unwind the wire. The wire entanglement prevention mechanism in the mechanism to do is not disclosed.

  The present invention has been made in view of the above points, and provides a wire unwinding / winding mechanism and a wire entanglement prevention method including a wire entanglement prevention mechanism that realizes weight reduction and high reliability of equipment. Objective.

  In order to achieve the above object, the wire unwinding / winding mechanism of the present invention is provided so as to face the outer peripheral side surface of the pulley drum and the pulley drum that unwinds or winds the wire by rotation. And a generally annular sliding member provided with an opening for taking out or inserting a wire in a part of the inner peripheral surface of the sliding member. The structure is characterized in that the wire slides upon contact.

  Further, the wire entanglement preventing method of the present invention has an inner peripheral surface provided so as to face the outer peripheral side surface of the pulley drum when the wire is unwound from the pulley drum, and a part of the wire is taken out or Pulling the wire into the pulley drum by pushing the wire into the pulley drum to the side by pushing the wire into the inner peripheral surface of the generally annular sliding member provided with an opening for insertion. It is characterized by preventing tangling to the shaft.

  According to the present invention, since the number of parts can be reduced, the mechanism can be reduced in size and weight, and the simplification of the mechanism is realized, so that the operation reliability can be improved.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
FIG. 1 shows the configuration of a first embodiment of a wire unwinding / winding mechanism according to the present invention. 1A is a perspective view of the wire unwinding / winding mechanism 10 of the present embodiment, FIG. 1B is a partially enlarged view of the sliding member 14 in FIG. 1A, and FIG. ) Is an exploded perspective view of the pulley drum 11, and FIG. 4D is a cross-sectional view of the pulley drum 11.

  As shown in FIGS. 1A to 1D, in the wire unwinding / winding mechanism 10 according to the present embodiment, the outer surface of the pulley drum 11 except for the opening 12 is generally annular and has an inner surface. A sliding member 14 formed in a corrugated shape is fixedly arranged. The corrugated plate shape formed on the inner surface of the sliding member 14 is a shape formed by joining curved surfaces as shown in FIG.

  A pulley drum shaft 15 that is fixedly penetrated to the center of the planar shape of the pulley drum 11 is positioned at the center of a generally annular sliding member 14. As shown in FIGS. 1C and 1D, the pulley drum 11 has a wire 13 wound around a cylindrical base portion 16. The base portion 16 is coaxial with the pulley drum shaft 15 and the sliding member 14 and has a diameter larger than that of the pulley drum shaft 15 and smaller than the inner diameter of the sliding member 14. The base portion 16 rotates integrally with the pulley drum shaft 15 and the pulley drum 11.

  Although the inner side surface of the sliding member 14 and the outer peripheral side surface of the pulley drum 11 are not in contact with each other as shown in FIG. 1D, the interval is smaller than the cross-sectional diameter of the wire 13 to be used. This is to prevent the wire 13 from entering the gap between the corrugated plate shape of the sliding member 14 and the pulley drum 11. Accordingly, the pulley drum 11 can rotate integrally with the pulley drum shaft 15 without contacting the sliding member 14 by rotating the pulley drum shaft 15.

  Next, with regard to the operation of the wire unwinding / winding mechanism 10 of the present embodiment when the wire is unwound (during unwinding), together with the pulley drum cross-sectional view of FIG. explain. In the figure, the same components as those in FIG.

  First, as shown in FIG. 2A, when the pulley drum 11 is stopped, the wire 13 is wound around the base portion 16 of the pulley drum 11 without a gap.

  Next, at the start of wire unwinding, as shown in FIG. 2B, the pulley drum 11 starts to rotate in the direction of feeding the wire 13 (counterclockwise in the figure). Here, it is assumed that no tension is applied to the wire 13 in the unwinding direction. In this case, a part of the outermost layer of the wire 13 wound around the base portion 16 without any gap is pushed by the rotation of the pulley drum 11 and is pressed against the corrugated member 14.

  Subsequently, as shown in FIG. 2C, during the wire unwinding (part 1), the outermost layer of the wire 13 is further pushed by the rotation of the pulley drum 11 and is pressed against the corrugated plate-like sliding member 14. . The pressed wire 13 starts sliding on the surface of the corrugated sliding member 14 and is sent out from the opening 12 to the outside of the pulley drum 11 without being entangled.

  Subsequently, during the wire unwinding (part 2) shown in FIG. 2D to the wire unwinding (part 3) shown in FIG. 2E, the pulley drum 11 continues to rotate, whereby the pulley drum 11 All the wires 13 wound around the base portion 16 are pressed against the corrugated plate-like sliding member 14, slide on the surface, and are sent out from the opening 12 to the outside of the pulley drum 11 without being entangled.

  At the time of winding the wire, the wire 13 is pulled by the rotational force of the pulley drum 11 and wound on the base portion 16. At this time, if the wire 13 is not tensioned in the direction opposite to the winding direction, the wire 13 is pushed back and tries to protrude laterally. However, according to the present embodiment, the wire 13 slides on the surface of the sliding member 14 by contacting the corrugated plate-shaped sliding member 14, and thus is introduced into the inside of the pulley drum 11 without being entangled and introduced into the base portion 16. Wrapped.

  As described above, in the wire unwinding / winding mechanism 10 of the present embodiment, the sliding member 14 causes the wire 13 to be protruded from the side by the back pushing of the wire 13 in the pulley drum 11 when the wire is unfolded. By pressing down while sliding, it is possible to prevent the wire 13 from being entangled with the pulley drum shaft 15 or the like. Moreover, since the substantially annular sliding member 14 has a corrugated inner surface in contact with the wire 13, the contact area with the wire 13 is smaller than that of the planar sliding member. Therefore, since the sliding member 14 has a low resistance due to friction when the wire 13 comes into contact, the wire 13 is not bent or entangled due to the contact in the pulley drum 11, and the wire 13 is connected to the pulley drum 11. Can be unwound to the outside.

  Therefore, according to the wire unwinding / winding mechanism 10, it is possible to prevent the wire 13 from being tangled only by the sliding member 14, and therefore the drawing roller 3 suitable for the wire unwinding / winding mechanism of FIG. 5. In addition, a large number of accompanying parts such as the belt 6 are not necessary. As a result, according to the wire unwinding / winding mechanism 10, the number of parts can be reduced, and the unwinding / winding mechanism 10 can be reduced in size and weight.

  Further, in the wire unwinding / winding mechanism 10 of the present embodiment, it is not necessary to consider the unwinding speed of the wire 13 due to the winding diameter of the wire 13 and the change in the winding speed. There is no need to provide a transmission. As a result, according to the wire unwinding / winding mechanism 10, the mechanism is simplified and the operation reliability is improved.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. FIG. 3 shows a configuration diagram of a second embodiment of a wire unwinding / winding mechanism according to the present invention. 3A is a perspective view of the wire unwinding / winding mechanism 20 according to the present embodiment, and FIG. 3B is a cross-sectional view of the pulley drum. 3A and 3B, the same components as those in FIGS. 1A to 1D are denoted by the same reference numerals.

  As shown in FIGS. 3A and 3B, in the wire unwinding / winding mechanism 20 of the present embodiment, the wave provided in the wire unwinding / winding mechanism 10 of the first embodiment is used. Instead of the plate-shaped sliding member 14, the small-diameter drum 21 that can freely rotate is used as a sliding member.

  As shown in FIGS. 3A and 3B, in the wire unwinding / winding mechanism 20 of the present embodiment, the pulley drum 11 freely rotates as a sliding member on the outer peripheral side surface excluding the opening 12. A plurality of small-diameter drums 21 that can be arranged are arranged without gaps. The small diameter drum 21 can slide the wire 13 by rotating the small diameter drum 21 when the wire 13 to be used comes into contact. Although the outer peripheral side surface of the small-diameter drum 21 and the outer peripheral side surface of the pulley drum 11 are not in contact with each other, the interval is smaller than the cross-sectional diameter of the wire 13 to be used. This is to prevent the wire 13 from entering the gap between the small diameter drum 21 and the pulley drum 11. Thus, the pulley drum 11 can rotate integrally with the pulley drum shaft 15 without contacting the small-diameter drum 21 by rotating the pulley drum shaft 15.

  At the time of unwinding the wire 13 where the tension of the wire unwinding / winding mechanism 20 of the present embodiment is not applied, as in the case of the wire unwinding / winding mechanism 10 described with FIG. The wire 13 is pressed against the outer peripheral side surface of the small-diameter drum 21, slides on the surface, and is sent out from the opening 12 to the outside of the pulley drum 11 without being entangled.

  Further, even when the wire 13 that is not tensioned by the wire unwinding / winding mechanism 20 of the present embodiment is wound, the wire 13 does not get entangled outside the pulley drum 11 as in the first embodiment. It is wound around the base portion 15 of the pulley drum 11.

  As described above, in the wire unwinding / winding mechanism 20 of the present embodiment, the plurality of small-diameter drums 21 protrude laterally by the back-pushing of the wire 13 in the pulley drum 11 when the wire is unfolded. Hold down the wire 13 while sliding. As a result, the wire unwinding / winding mechanism 20 can prevent an event in which the wire 13 is entangled with the pulley drum shaft 15 or the like. Further, since the portion of the small diameter drum 21 that contacts the wire 13 is a curved surface, the contact area with the wire 13 is smaller than that of a planar sliding member, and resistance due to friction when the wire 13 contacts is small. Power is low. Therefore, the wire unwinding / winding mechanism 20 can unwind the wire 13 to the outside of the pulley drum 11 without causing the wire 13 to be bent or entangled due to contact in the pulley drum 11.

  Therefore, according to the wire unwinding / winding mechanism 20, since the tangling of the wire 13 can be prevented by only the plurality of small diameter drums 21, the wire unwinding / winding mechanism shown in FIG. Many accompanying parts are not necessary. As a result, according to the wire unwinding / winding mechanism 20, the number of parts can be reduced, and the unwinding / winding mechanism 20 can be reduced in size and weight.

  Further, in the wire unwinding / winding mechanism 20 of the present embodiment, it is not necessary to consider changes in the unwinding speed of the wire 13 and the winding speed due to the winding diameter of the wire 13. For this reason, according to the wire unwinding / winding mechanism 20, it is not necessary to provide a transmission for adjusting the speed, and as a result, the mechanism is simplified and the operation reliability is improved.

(Third embodiment)
Next, a third embodiment of the present invention will be described. FIG. 4 shows a configuration diagram of a third embodiment of a wire unwinding / winding mechanism according to the present invention. 4A is a perspective view of the wire unwinding / winding mechanism 30 of the present embodiment, FIG. 4B is an exploded perspective view of the pulley drum, and FIG. 4C is a sectional view of the pulley drum. Indicates. 4A to 4C, the same components as those in FIGS. 1A to 1D are denoted by the same reference numerals.

  The wire unwinding / winding mechanism 30 according to the present embodiment is generally composed of a pulley drum row 31 and an annular sliding member 32. The pulley drum row 31 is composed of a plurality of pulley drums in which the pulley drum shaft 15 is penetrated and fixed in common to the central portion, and spaced apart at regular intervals in the axial direction of the pulley drum shaft 15. The sliding member 32 is disposed on the outer peripheral side surface of the pulley drum row 31 so that the inner side surface of the sliding member 32 faces the outer side. In this wire unwinding / winding mechanism 30, a plurality of wires 13 are simultaneously unwound from the opening 33 of the sliding member 32 to the base 16 of each pulley drum of the pulley drum row 31. At the same time, it is wound around the base 16 of each pulley drum.

  A corrugated plate shape that is the same as the corrugated plate shape shown in FIG. 1B is formed on the inner side surface of the sliding member 32 that is spaced apart from the outer peripheral side surface of the pulley drum row 31. The center position of the annular sliding member 32 coincides with the center position of the pulley drum shaft 15.

  As shown in FIG. 4C, the sliding member 32 and the side surface of each pulley drum of the pulley drum row 31 are not in contact with each other, but the interval is smaller than the cross-sectional diameter of the wire 13 to be used. This is to prevent the wire 13 from entering the gap between the sliding member 32 and the pulley drum. Accordingly, the plurality of pulley drums constituting the pulley drum row 31 can rotate simultaneously with the pulley drum shaft 15 without contacting the sliding member 32 by rotating the pulley drum shaft 15.

  When unwinding a plurality of wires 13 that are not tensioned by the wire unwinding / winding mechanism 30 according to the present embodiment, the wire unwinding / winding mechanism 10 described with reference to FIG. Similarly, each of the plurality of wires 13 is pressed into a corrugated plate shape formed on the inner surface of the sliding member 32, slides on the surface, and does not get entangled from the opening 33 to the outside of the pulley drum row 31 at the same time. Sent out.

  The pulleys constituting the pulley drum row 31 are not entangled outside the pulley drum row 31 even when the plurality of wires 13 that are not tensioned by the wire unwinding / winding mechanism 30 of the present embodiment are wound. The drum can be wound around the drum base 15 at the same time.

  As described above, in the wire unwinding / winding mechanism 30 according to the present embodiment, the inner surface provided around the pulley drum row 31 is only the corrugated sliding member 32 and the tangling of the plurality of wires 13 is generated. Therefore, a large number of accessory parts such as the drawing roller 3 and the belt 6 that are suitable for the wire unwinding / winding mechanism in FIG. 5 are not required, and as a result, the number of parts can be reduced. The unwinding / winding mechanism 30 can be reduced in size and weight.

  Further, in the wire unwinding / winding mechanism 30 of the present embodiment, it is not necessary to consider the winding speed of the wire 13 due to the winding diameter of the plurality of wires 13 and the change in the winding speed, so that the speed adjustment is performed. There is no need to provide a transmission for the motor, and as a result, the mechanism is simplified and the operation reliability is improved.

  In addition, this invention is not limited to the above embodiment, For example, the structure which arrange | positions the small diameter drum similar to the small diameter drum 21 shown in FIG. 3 instead of the sliding member 32 of FIG. 4 may be sufficient.

It is a block diagram of 1st Embodiment of the winding-out / winding-up mechanism of the wire of this invention. It is operation | movement explanatory drawing of 1st Embodiment of the winding-out / winding-up mechanism of the wire of this invention. It is a block diagram of 2nd Embodiment of the winding-out / winding-up mechanism of the wire of this invention. It is a block diagram of 3rd Embodiment of the winding-out / winding-up mechanism of the wire of this invention. It is a block diagram which shows an example of the winding-out / winding-up mechanism of a wire which has a wire tangle prevention mechanism.

Explanation of symbols

10, 20, 30 Wire unwinding / winding mechanism 11 Pulley drum 12, 33 Opening portion 13 Wire 14, 32 Sliding member 15 Pulley drum shaft 16 Base portion 21 Small-diameter drum 31 Pulley drum row

Claims (14)

A pulley drum that unwinds the wire by rotation or winds the wire;
A generally annular sliding member having an inner peripheral surface provided so as to be opposed to and spaced apart from the outer peripheral side surface of the pulley drum, and having an opening for taking out or inserting the wire in a part thereof; ,
Have
The wire unwinding / winding mechanism characterized in that the inner peripheral surface of the sliding member is structured to slide the wire when the wire comes into contact therewith.   2. The wire unwinding / winding mechanism according to claim 1, wherein a plurality of the pulley drums are arranged apart from each other in the axial direction to form a pulley drum row.   The wire unwinding / winding mechanism according to claim 1 or 2, wherein the inner peripheral surface of the sliding member is formed in a corrugated shape.   4. The wire according to claim 1, wherein an interval between the outer peripheral side surface and the inner peripheral surface of the sliding member is set to a value smaller than a diameter of the wire. 5. Unwinding / winding mechanism. An opening for taking out or inserting a wire is provided in part, and a substantially cylindrical pulley drum that unwinds the wire by rotation or winds the wire;
A plurality of small-diameter drums that are rotatable and have a smaller diameter than the pulley drum, and are arranged circumferentially along a position facing and spaced apart from the outer peripheral side surface of the pulley drum excluding the opening. Wire unwinding / winding mechanism.   6. The wire unwinding / winding mechanism according to claim 5, wherein a plurality of the pulley drums are arranged apart from each other in the axial direction to constitute a pulley drum row.   The wire unwinding / winding mechanism according to claim 5 or 6, wherein a distance between the outer peripheral side surface and the outer peripheral side surface of the small-diameter drum is set to a value smaller than the diameter of the wire.   When unwinding the wire from the pulley drum, it has an inner peripheral surface provided so as to be opposed to the outer peripheral side surface of the pulley drum, and an opening for taking out or inserting the wire is provided in part. By slidably pressing the wire onto the inner circumferential surface of the generally annular sliding member, the wire is entangled with the pulley drum shaft due to the protrusion of the wire in the pulley drum to the side by the back pushing. Wire entanglement prevention method characterized by preventing.   9. The wire entanglement preventing method according to claim 8, wherein a plurality of the pulley drums are arranged apart from each other in the axial direction to form a pulley drum row.   The wire tangle prevention method according to claim 8 or 9, wherein the inner peripheral surface of the sliding member is formed in a corrugated shape.   The wire entanglement according to any one of claims 8 to 10, wherein an interval between the outer peripheral side surface and the inner peripheral surface of the sliding member is set to a value smaller than a diameter of the wire. Prevention method.   When the wire is unwound from the opening of the pulley drum, it is arranged circumferentially along a position facing the outer peripheral side surface of the pulley drum except for the opening, and is rotatable and has a smaller diameter than the pulley drum. By pressing the wire while sliding it on the outer peripheral side surfaces of a plurality of small-diameter drums, it is possible to prevent the wire from being entangled with the pulley drum shaft due to the side protrusion of the wire in the pulley drum due to the pushing back of the wire. A feature of preventing wire entanglement.   The wire tangle prevention method according to claim 12, wherein a plurality of the pulley drums are arranged apart from each other in the axial direction to form a pulley drum row.   The wire tangle prevention method according to claim 12 or 13, wherein a distance between the outer peripheral side surface and the outer peripheral side surface of the small-diameter drum is set to a value smaller than the diameter of the wire.

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