JP5162517B2 - Conductive winder and conductive safety belt provided with the same - Google Patents

Description

  The present invention relates to a safety belt used for high-altitude work. More specifically, the present invention relates to a conductive type winder and a conductive type safety belt provided with the winder.

  There is a risk of falling accidents at work sites at high altitudes. In order to prevent such a fall accident, a worker at an aerial work site wears a safety belt. Work at heights may be done in places where combustible materials such as flammable gases and explosives are handled. For example, in oil refineries and oil relay stations, lubrication is performed on the tanks of tank trucks. In high-altitude work where such combustible materials are handled, a safety belt with countermeasures against static electricity is attached. Japanese Unexamined Patent Application Publication No. 2004-97562 discloses a safety belt in which such a fall accident prevention and a countermeasure against static electricity are taken.

  FIG. 7 is a side view showing the usage state of the fall prevention device 2 on the tank of the tank truck. At an aerial work site, an operator uses the fall prevention device 2 to prevent a fall accident. The fall prevention device 2 includes a rail 4 fixed to a structure, a roller portion 6 that is movable while being guided by the rail 4, a winder 8 that is suspended from the roller portion, and a winder 8 And a lifeline 10 wound around. An operator safety belt 12 is connected to the lifeline 10.

  An operator wearing the safety belt 12 of FIG. 7 moves on the tank. Since the safety belt 12 is attached, even if the foot is slipped, the fall is prevented. With this fall prevention device 2, the worker can work safely. The roller portion 6 is held by the rail 4 so as to be movable. The operator can move along the direction in which the rail 4 extends. The winder 8 can feed and wind the lifeline 10. The operator can move within the range in which the lifeline 10 is drawn out with the position of the winder 8 as the center. In this fall prevention device 2, there is no replacement work of the lifeline 10 accompanying the movement of the worker. With this fall prevention device 2, an operator can work efficiently.

  In this fall prevention device 2, the main parts of the rail 4, the roller 6 and the winder 8 are made of metal. Conductive fibers are woven into the lifeline 10 and the belt 12. In the fall prevention device 2, the static electricity of the worker is energized from the work clothes 14 to the safety belt 12. The static electricity applied to the safety belt 12 is sequentially applied to the lifeline 10, the winder 8, the roller 6, and the rail 4. Thereby, generation | occurrence | production of the discharge by static electricity is suppressed. In the fall prevention device 2, a fire accident caused by static electricity is suppressed. In this fall prevention device 2, by providing the rail 4, the roller 6 and the winder 8, a countermeasure against static electricity is taken and a relatively wide range of moving work is possible. In this fall prevention device 2, the rail 4, the roller 6, and the winder 8 need to be installed in advance.

  FIG. 8 is a front view of another safety belt 16 in which a fall accident prevention and a countermeasure against static electricity are taken. The safety belt 16 includes a belt 18, a buckle 20, a D ring stopper 22, a D ring 24, a rope 26 and a hook 28. The buckle 20, the D ring stopper 22, the D ring 24, and the hook 28 are made of a copper alloy. The belt 18 and the rope 26 are woven with conductive fibers. The hook 28 of the safety belt 16 is locked to the structure. The operator's static electricity is sequentially applied to the belt 18, the D ring stopper 22, the D ring 24, the rope 26, and the hook 28. The static electricity of the operator is energized to the structure. Thereby, generation | occurrence | production of the discharge by static electricity is suppressed. In this safety belt 16, it is not necessary to provide the rail 4, the roller 6 and the winder 8 of the fall prevention device 2 of FIG. This safety belt 16 is widely used for general high-altitude work. In the safety belt 16, the operator can move within the range in which the rope 26 extends.

JP 2004-97562 A

Catalog No.339 “SAFETY & EFFICIENCY” published by Fujii Electric Works Co., Ltd. Page 16 Product order number BEA-S590

  In the safety belt 16, when the rope 26 is lengthened, the work is performed with the rope slackened. There is a risk that other workers, materials, etc. may be caught on the rope 26. The long rope 26 has a long drop distance when it is dropped. On the other hand, when the rope 26 is shortened, the movement range of the operator is narrowed. The work of changing the hook 28 to the structure increases. The work of changing the hook 28 reduces the work efficiency. The work of changing hooks increases the danger of working at heights.

  As a method of expanding the movement range without changing the hook 28, there is a method of using a safety belt provided with a winder. In this safety belt, the winder is attached to the safety belt. This winder is provided with a winding belt. The winding belt here refers to a belt that can be fed and wound on a winder. Such a winder is reduced in weight for carrying. For this reason, resin parts are frequently used. A winder that uses a lot of resin parts is not energized. The safety belt provided with this winder cannot be energized between a hook that is locked to the structure and a belt that is wound around the waist. In addition, in the inside of the winder, friction between the overlapping portions of the windup belt is generated as the windup belt is wound and fed. Static electricity generated by this friction may be charged to the operator through the winding belt.

  An object of the present invention is to provide a winder that can be energized without greatly changing the structure and parts of the conventional winder and a safety belt provided with the winder.

  The safety belt according to the present invention includes a belt in which conductive fibers are woven, a connector made of a conductor, a winder, and a hook made of a conductor. The winder includes a frame made of a conductor, a winding belt woven with conductive fibers, a spiral spring made of a conductor, and a main shaft made of a conductor. The main shaft is rotatable with respect to the frame. The main shaft is rotated in one direction so that the take-up belt is fed out. The main shaft is rotated in the other direction so that the take-up belt is taken up. The winding belt and the main shaft can be energized. One end of the spiral spring is attached to the main shaft so that the spiral spring and the main shaft can be energized. The spiral spring urges the main shaft in a rotational direction in which the winding belt is wound. The spiral spring comes into contact with the frame so that the spiral spring and the frame can be energized. The belt and the connecting tool are connected to be energized. The coupling tool and the frame are coupled to enable energization. The hook and the take-up belt are connected to be energized.

  Preferably, the winder of the safety belt includes a pin made of a bearing, a bobbin, and a conductor. The main shaft is held by a frame via a bearing. The bobbin is attached to the main shaft. The bobbin includes a pair of rods made of a conductor, and the rod and the main shaft can be energized. The bobbin is rotatable in unison with the main shaft. This pin is spanned between a pair of scissors, so that the scissors and the pin can be energized. The winding belt is wound around a bobbin between one hook and the other hook. The winding belt comes into contact with the pin, and the winding belt and the pin can be energized.

  The winder according to the present invention includes a frame made of a conductor, a take-up belt woven with conductive fibers, a spiral spring made of a conductor, and a main shaft made of a conductor. The main shaft is rotatable with respect to the frame. The main shaft is rotated in one direction so that the take-up belt is fed out. The main shaft is rotated in the other direction so that the take-up belt is taken up. The winding belt and the main shaft can be energized. One end of the spiral spring is attached to the main shaft, and the spiral spring and the main shaft can be energized. The spiral spring urges the main shaft in a rotational direction in which the winding belt is wound. The spiral spring comes into contact with the frame so that the spiral spring and the frame can be energized.

  Preferably, the winder includes a pin made of a bearing, a bobbin, and a conductor. The main shaft is held by a frame via a bearing. The bobbin is attached to the main shaft. The bobbin includes a pair of flanges made of a conductor. The rod and the main shaft can be energized. The bobbin is rotatable in unison with the main shaft. This pin is spanned between a pair of scissors, so that the scissors and the pin can be energized. The winding belt is wound around a bobbin between one hook and the other hook. The winding belt comes into contact with the pin, and the winding belt and the pin can be energized.

  In the safety belt according to the present invention, power is supplied from the belt to the hook through the winder. As a result, charging of the operator is suppressed. This winder can be energized without greatly changing the structure and parts from the conventional winder.

FIG. 1 is a front view showing a safety belt according to an embodiment of the present invention. FIG. 2 is a partial arrow view of the safety belt indicated by arrow II in FIG. FIG. 3 is an enlarged cross-sectional view showing a part of the safety belt of FIG. FIG. 4 is an enlarged cross-sectional view illustrating another part of the safety belt of FIG. FIG. 5 is an exploded perspective view showing a part of the safety belt winder of FIG. 1. FIG. 6 is an exploded view showing another part of the winder of the safety belt of FIG. FIG. 7 is a conceptual diagram showing a use state of a conventional crash prevention device. FIG. 8 is a front view showing another conventional safety belt.

  Hereinafter, the present invention will be described in detail based on preferred embodiments with appropriate reference to the drawings.

  1 includes a belt 32, a buckle 34, a connecting ring 36, a shock absorber 38, a connecting tool 40, a winder 42, and a hook 44. For convenience of explanation, the left-right direction in FIG. 1 is the front-rear direction of the safety band 30, and the left direction in FIG. 1 is the front direction of the safety band 30. The vertical direction in FIG. 1 is the horizontal direction of the safety belt 30. The direction perpendicular to the paper surface is the vertical direction of the safety belt 30.

  The shape of the belt 32 is a long belt shape. The belt 32 is made of synthetic fibers and conductive fibers. As this synthetic fiber, for example, polyester, polyamide or aramid is used. Conductive fibers are woven into this synthetic fiber. The conductive fiber is a fiber made of a conductive material such as metal or carbon, or a fiber made using a part thereof, and is a fiber having antistatic performance.

  The buckle 34 is attached to the front end of the belt 32. The buckle 34 can be locked with the rear end portion of the belt 32. The material of the buckle 34 is preferably a conductor. In the safety belt 30, the buckle 34 is made of metal and is made of a copper alloy.

  FIG. 2 is a bottom view showing the connecting ring 36, the shock absorber 38, the connecting tool 40, and the winder 42 together with a part of the belt 32 as seen in the direction of the arrow II in FIG. 1. FIG. 3 shows an enlarged cross-sectional view of the connecting ring 36 and the shock absorber 38 of FIG. FIG. 3 shows a cross section along the longitudinal direction of the belt 32. The connecting ring 36 includes two long holes 46. The connecting ring 36 is attached to substantially the center of the belt 32. The belt 32 is passed so as to sew the two long holes 46 of the connecting ring 36. The connection ring 36 is made of a metal that is a conductor. In the safety belt 30, the connecting ring 36 is made of a copper alloy.

  The shock absorber 38 includes a first belt 48, a second belt 50, a pair of wear preventing cloths 52 and a cover 54. Both end portions of the first belt 48 are covered with an anti-wear cloth 52, respectively. The rear end portion of the first belt 48 is covered with a rear wear preventing cloth 52. The rear end portion of the first belt 48 and the rear wear preventing cloth 52 are sewn. The front end portion of the first belt 48 is covered with a front wear preventing cloth 52. The front end portion of the first belt 48 and the front wear preventing cloth 52 are sewn.

  The first belt 48 has a long belt shape. The first belt 48 is made of synthetic fibers and conductive fibers. As this synthetic fiber, for example, polyester, polyamide or aramid is used. Conductive fibers are woven into this synthetic fiber. The second belt 50 has a long belt shape. The second belt 50 is made of the same synthetic fiber as the first belt 48. The intermediate portions of the first belt 48 and the second belt 50 are bonded in a folded state. The folded intermediate portion of the first belt 48 and the second belt 50 is covered with a cover 54.

  The wear preventing cloth 52 is made of conductive fibers. The rear end portion of the first belt 48 is passed through one long hole 46 of the connecting ring 36 and is turned back. The rear wear preventing cloth 52 is brought into contact with the connecting ring 36. The rear end portion of the second belt 50 is sandwiched between the rear end portions of the first belt 48.

  FIG. 4 shows an enlarged cross-sectional view of a part of the shock absorber 38, the connector 40, and a part of the winder 42 in FIG. FIG. 4 shows a cross section along the longitudinal direction of the belt 32. The connector 40 includes a main body 58 and a connection pin 60. The main body 58 is made of a long flat metal plate. Both long ends of the main body 58 are bent into a U shape. The connecting pin 60 is made of a round bar-shaped metal. Connection pins 60 are bridged between both ends of the main body 58. In the safety belt 30, the main body 58 and the connecting pin 60 are made of a copper alloy. The main body 58 and the connecting pin 60 are in contact with each other so as to be energized. A front end portion of the first belt 48 is wound around the main body 58 of the connector 40 and folded back. The front end portion of the folded first belt 48 sandwiches the front end portion of the second belt 50.

  The winder 42 includes a frame 62, a bearing 64, a main shaft 66, a main shaft collar 68, a bobbin 70, a spiral spring 72, a spring case 74, a claw shaft 76, a claw 78, a claw receiving gear 80, a stepped rivet 82, and a winding belt. 84 and a resin case 86 are provided.

  FIG. 5 is an exploded perspective view showing a part of the winder 42. A resin case 86 shown in FIG. 4 is fixed to the frame 62. The frame 62 has a shape obtained by bending a metal plate into a substantially U shape. The frame 62 includes a first plate 88, a second plate 90, and a connecting portion 92. The planes of the first plate 88 and the second plate 90 face each other in parallel. A spindle hole 94 is formed in the first plate 88 and the second plate 90. The first plate 88 and the second plate 90 are integrated with each other through the connecting portion 92. The connecting portion 92 is bent into a substantially U shape.

  The bearing 64 includes a cylindrical main body and a flange formed on the main body at one end in the axial direction. The bearing 64 is made of resin. Examples of this resin include polyacetal. The bearing 64 is passed through the main shaft hole 94 of the frame 62 and fixed.

  The main shaft 66 includes a shaft main body 96 and a stepped bush 98. The shaft body 96 and the stepped bush 98 are made of metal. In the winder 42, the shaft body 96 and the stepped bush 98 are made of steel. The tip of the shaft body 96 is passed through a bearing 64 fixed to the first plate 88. A groove 99 parallel to the axial direction is formed at the rear end of the shaft body 96. The outer shape of the stepped bush 98 is a stepped cylindrical shape having a large diameter portion and a small diameter portion. A through hole passing through the axis is formed in the stepped bush 98. The tip of the shaft body 96 is passed through this through hole. A small diameter portion of the stepped bush 98 is passed through a bearing 64 fixed to the second plate 90. Thus, the main shaft 66 is rotatably attached to the frame 62 via the bearing 64. The main shaft 66 is passed through a main shaft collar 68. The main shaft collar 68 is made of polyacetal similarly to the bearing 64.

  The bobbin 70 includes a bobbin main body 100 and a pair of flanges 102. The bobbin main body 100 and the flange 102 are made of metal. The bobbin main body 100 and the flange 102 are made of steel. The shape of the bobbin main body 100 is a shape in which a cylindrical side surface is cut out in the axial direction. The shape of the collar 102 is a disk shape. One hook 102 is fixed to one end of the bobbin main body 100 in the axial direction. The other collar 102 is fixed to the other end of the bobbin main body 100 in the axial direction. The bobbin main body 100 is located between the pair of collars 102. A stop hole 103 is formed in the collar 102. The rotation hole 103 is stopped by passing the main shaft 66. The rotation stop hole 103 of the collar 102 and the main shaft 66 are in contact with each other. As a result, the bobbin 70 and the main shaft 66 can rotate together. A cushion rubber 104 is attached to the bobbin main body 100. The shape of the cushion rubber 104 is a shape in which a cylindrical side surface is cut out in the axial direction. The bobbin main body 100 is covered with a cushion rubber 104. The notched portions of the bobbin main body 100 and the cushion rubber 104 are aligned in the circumferential direction. A main shaft collar 68 and a main shaft 66 are passed through the bobbin main body 100. The bobbin 70 is located between the first plate 88 and the second plate 90 of the frame 62.

  The claw shaft 76 is a single pin that spans the pair of hooks 102. The claw shaft 76 is bridged and fixed between the pair of hooks 102. The claw shaft 76 is made of metal. The claw shaft 76 is made of steel. The claw 78 is located between the second plate 90 of the frame 62 and the bobbin 70. One end of the claw 78 is attached to the claw shaft 76. The claw 78 is rotatable with respect to the claw shaft 76. One end of a coil spring 106 is attached to the other end of the claw 78. The other end of the coil spring 106 is attached to the flange 102. As a result, when the other end of the claw 78 rotates in the outer diameter direction when the main shaft 66 is rotated about the rotation shaft, a force to pull back toward the inner diameter by the coil spring 106 is applied.

  The claw receiving gear 80 is located between the second plate 90 of the frame 62 and the bobbin 70. The claw receiving gear 80 is located at the same position as the claw 78 in the axial direction of the main shaft 66. The claw receiving gear 80 is fixed to the side surface of the second plate 90 facing the bobbin 70. The claw receiving gear 80 is attached by rivets in parallel to the plane of the second plate 90. The claw receiving gear 80 is made of a metal plate. The claw receiving gear 80 has a hole 108 in the center. The hole 108 includes a plurality of engaging portions 110 that can engage with the claws 78.

  The spiral spring 72 is housed in a spring case 74. The outer diameter end of the spiral spring 72 is fixed to the spring case 74. The spiral spring 72 is made of metal. The spiral spring 72 is made of stainless steel. The spring case 74 is made of resin. The spring case 74 is detachably attached to the first plate 88. By attaching the spring case 74 to the frame 62, the spiral spring 72 is positioned in contact with the outer surface of the first plate 88 of the frame 62. The outer side surface is a side surface opposite to the side surface facing the bobbin 70. The inner diameter end of the spiral spring 72 is locked in the groove 99 at the rear end of the main shaft 66.

  The stepped rivet 82 is another pin that spans the pair of ridges 102. The stepped rivet 82 is stretched over a pair of ridges 102 and fixed. One end of the stepped rivet 82 is fixed to one hook 102. The other end of the stepped rivet 82 is fixed to the other hook 102. The stepped rivet 82 is made of metal. The stepped rivet 82 is made of steel.

  FIG. 6 shows a state in which the winding belt 84 is wound around the winder 42. A two-dot chain line in FIG. 6 indicates an outer diameter of the flange 102. The cross-sectional shape perpendicular to the longitudinal direction of the winding belt 84 is a rectangle. The winding belt 84 is made of synthetic fibers and conductive fibers. As this synthetic fiber, for example, polyester, polyamide or aramid is used. Conductive fibers are woven into this synthetic fiber.

  A rear end portion 112 of the winding belt 84 is wound around the main shaft collar and folded back. The folded back end portion 112 and the main portion 114 are overlapped. The rear end portion 112 and the main portion 114 are drawn outward in the radial direction from the notched portions of the bobbin main body 100 and the cushion rubber 104. The rear end portion 112 and the main portion 114 are folded along the claw shaft 76 and wound around the cushion rubber 104. The rear end portion 112 of the winding belt 84 is wound in contact with the cushion rubber 104. The winding belt 84 wound around the cushion rubber 104 is pressed inward in the radial direction by a stepped rivet 82. By this stepped rivet 82, the state where the rear end portion 112 of the winding belt 84 and a part of the rear end portion side of the main portion 114 are wound around the bobbin main body 100 is maintained.

  As shown in FIG. 1, the end of the take-up belt 84 is covered with an anti-wear cloth 116. The wear preventing cloth 116 is made of the same material as the wear preventing cloth 52 of the shock absorber 38.

  The hook 44 includes a hook body 118, a stopper 120, and a safety device 122. The hook body 118 has a bowl shape. The hook body 118 is connected to the wear preventing cloth 116. A stopper 120 is rotatably attached to the opening of the hook body 118. The detachment stopper 120 rotates counterclockwise, and the opening of the hook body 118 is opened. The stopper 120 rotates clockwise, and the opening of the hook body 118 is closed. A locking spring 120 (not shown) biases the locking body 120 against the hook body 118 so as to close the opening of the hook body 118. The hook body 118 is made of metal. In the hook 44, the hook body 118 is made of a copper alloy.

  The belt 32 of the safety belt 30 is wound around the waist of the worker wearing work clothes. The belt 32 is in contact with the work clothes. The rear end of the belt 32 is passed through the buckle 34 and locked. The buckle 34 is in contact with the work clothes. The buckle 34 and the belt 32 can be energized. The hook body 118 is locked to the structure in a state where the stopper 120 and the safety device 122 are gripped. When the operator releases his / her hand from the hook 44, the stopper 120 rotates to close the opening of the hook body 118. As a result, the hook 44 is prevented from being detached from the structure.

  The belt 32 and the connecting ring 36 are in contact with each other. As a result, the belt 32 and the connecting ring 36 can be energized. The connection ring 36 is in contact with the wear preventing cloth 52 behind the shock absorber 38. The connecting ring 36 and the shock absorber 38 can be energized. A wear preventing cloth 52 in front of the shock absorber 38 is in contact with the connector 40. Thereby, the shock absorber 38 and the connector 40 can be energized. The connector 40 and the frame 62 of the winder 42 are in contact with each other. Thereby, the connection tool 40 and the frame 62 can be energized. The safety belt 30 may not include the shock absorber 38. In that case, the connector 40 is attached to the belt 32. The belt 32 and the connector 40 can be energized.

  The first plate 88 of this frame 62 and the spiral spring 72 are in contact with each other. The frame 62 and the spiral spring 72 can be energized. The inner diameter end of the spiral spring 72 is locked in the groove 99 of the main shaft 66 so that energization is possible. The main shaft 66 and the rotation stop hole 103 of the bobbin 70 are in contact with each other so that the main shaft 66 and the bobbin 70 can be energized. A pair of hooks 102 of the bobbin 70 is in contact with a claw shaft 76 as a pin. The bobbin 70 and the claw shaft 76 are energized.

  As shown in FIG. 6, the claw shaft 76 is in contact with the winding belt 84. The claw shaft 76 and the winding belt 84 can be energized. As shown in FIG. 1, the winding belt 84 is in contact with the wear preventing cloth 116. The winding belt 84 and the wear preventing cloth 116 can be energized. The wear preventing cloth 116 and the hook 44 are in contact with each other. The wear preventing cloth 116 and the hook 44 can be energized. In the winder 42, a stepped rivet 82 as the other pin is in contact with the pair of flanges 102 of the bobbin 70. The bobbin 70 and the stepped rivet 82 are energized. The stepped rivet 82 is in contact with the winding belt 84. The stepped rivet 82 and the winding belt 84 can be energized.

  When the worker moves away from the hook 44, the winding belt 84 is fed out from the winder 42. When the operator moves toward the hook 44, the winding belt 84 is wound up by the spiral spring 72. In the winder 42, the occurrence of slack in the winding belt 84 is suppressed. An operator wearing the safety belt 30 can move within a range in which the winding belt 84 is extended.

  Should the operator fall from a high place, the take-up belt 84 is rapidly fed out. Thereby, the bobbin 70 is rapidly rotated. Due to the rapid rotation of the bobbin 70, the other end portion of the claw 78 is rotated radially outward against the urging force of the coil spring 106. The claw 78 engages with the engaging portion 110 of the claw receiving gear 80. Bobbin rotation is prevented. The take-up belt 84 is prevented from being fed out. Thereby, the fall distance of an operator is minimized.

  An operator may be charged during work. The winder 42 can be energized from the frame 62 to the wind belt 84 and the wear preventing cloth 116. The safety belt 30 can be energized from the belt 32 to the hook 44. Thereby, the static electricity of the operator energizes the structure. Thereby, it is suppressed that static electricity is charged to an operator. The shock when the static electricity charged to the worker is discharged is reduced. In addition, generation of sparks due to electrostatic discharge is suppressed. Explosion accidents caused by the sparks igniting combustible materials are suppressed.

  Generally, in the winder 42, when the winding belt 84 is unwound from the wound state, peeling electrification occurs. The winding belt 84 of the winder 42 can be energized. Thereby, peeling electrification is controlled. Even if the winding device 42 repeats rewinding and unwinding of the winding belt 84, peeling electrification is suppressed. In the safety belt 30, the hook body 118 is made of a copper alloy. Thereby, the spark which generate | occur | produces when it collides with a structure is suppressed. From this point of view, the hook body 118 may be an aluminum alloy.

  Since the outer diameter end of the spiral spring 72 is locked to the spring case 74 and is accommodated in the spring case 74, the spiral spring 72 is easily attached and detached. By attaching and removing the spring case 74 to and from the frame 62, the spiral spring 72 can be attached and detached. On the other hand, the spiral spring 72 is disposed so as to be in contact with the frame 62, so that the energization between the spiral spring 72 and the frame 62 can be reliably performed. Since the inner diameter end of the spiral spring 72 is locked in the groove 99 of the main shaft 66, current can be reliably supplied between the spiral spring 72 and the main shaft 66.

  In the winder 42 when an operator falls, the frame 62, the claw receiving gear 80, the claw 78, the claw shaft 76, and the main shaft 66 receive a large force. These parts are required to be strong. In the winder 42, when the winding belt 84 is pulled out to the maximum extent, the stepped rivet 82 receives a large force in order to stop pulling out the winding belt 84. The stepped rivet 82 is required to be strong. For this reason, in the winder 42, the material of the frame 62, the claw receiving gear 80, the claw 78, the main shaft 66 and the stepped rivet 82 is preferably metal. In the winder 42, the main shaft 66 and the frame can be energized via the spiral spring 72. As a result, the frame 62, the main shaft 66, the claw shaft 76, and the stepped rivet 82, in which metal is functionally preferable, serve as the energization path. Further, the winder 42 can be energized by making the collar 102 of metal. This winder 42 does not require any special parts for enabling energization.

  In the winder 42, the bearing 64 is made of resin. The main shaft 66 is supported so as to be smoothly rotatable. The winder 42 is light in weight because resin parts are frequently used. In this winder 42, parts of a conventional winder can be used. Thereby, the design change for manufacturing the winder 42 of the conductive type is minimized. It is suppressed that the performance test such as the durability test is performed again. The winder 42 can be manufactured at a low cost.

30 ... Safety belt 32 ... Belt 34 ... Buckle 36 ... Connecting ring 38 ... Shock absorber 40 ... Connecting tool 42 ... Winder 44 ... Hook 48 ... 1st belt 50 ... 2nd belt 52 ... Wear prevention cloth 58 ... Body 60 ... Connection pin 62 ... Frame 64 ... Bearing 66 ... Spindle 70 ... Bobbin 72 ..Spiral spring 74 ... Spring case 76 ... Claw shaft 82 ... Stepped rivet 84 ... Winding belt 88 ... First plate 90 ... Second plate 92 ... Connecting part 102 ... 鍔 114 ... Main part 116 ... Abrasion prevention cloth

Claims (4)

It comprises a belt woven with conductive fibers, a connector made of a conductor, a winder, and a hook made of a conductor.
The winder includes a frame made of a conductor, a winding belt woven with conductive fibers, a spiral spring made of a conductor, a main shaft made of a conductor, and a spring case .
This spindle is rotatable with respect to the frame,
The main shaft rotates in one direction so that the take-up belt is fed out.
The main shaft is rotated in the other direction so that the take-up belt is taken up,
The winding belt and the main shaft can be energized,
One end of the spiral spring is attached to the main shaft, and the spiral spring and the main shaft can be energized,
This spiral spring urges the main shaft in the rotational direction around which the winding belt is wound,
The spiral spring is locked to the spring case, the spring case is attached to the frame, the spiral spring is arranged so as to contact the frame, and the spiral spring and the frame can be energized,
This belt and the connecting tool are connected and can be energized.
This connecting tool and the frame are connected and can be energized.
A safety belt in which the hook and the winding belt are connected to enable energization. The winder includes a pin made of a bearing, a bobbin and a conductor,
The main shaft is held on the frame via a bearing,
This bobbin is attached to the main shaft,
The bobbin has a pair of rods made of a conductor, and the rod and the main shaft are energized.
This bobbin is made rotatable with the main shaft,
This pin is bridged between a pair of ridges so that the heel and the pin can be energized,
This winding belt is wound around the bobbin between one hook and the other hook,
The safety belt according to claim 1, wherein the winding belt comes into contact with the pin and the winding belt and the pin can be energized. A frame made of a conductor, a winding belt woven with conductive fibers, a spiral spring made of a conductor, a main shaft made of a conductor, and a spring case ;
This spindle is rotatable with respect to the frame,
The main shaft rotates in one direction so that the take-up belt is fed out.
The main shaft is rotated in the other direction so that the take-up belt is taken up,
The winding belt and the main shaft can be energized,
One end of the spiral spring is attached to the main shaft, and the spiral spring and the main shaft can be energized,
This spiral spring urges the main shaft in the rotational direction around which the winding belt is wound,
The spiral spring is locked to the spring case, the spring case is attached to the frame, and the spiral spring is disposed so as to contact the frame . vessel. It has a pin consisting of the bearing, bobbin and conductor,
The main shaft is held on the frame via a bearing,
This bobbin is attached to the main shaft,
The bobbin has a pair of rods made of a conductor, and the rod and the main shaft are energized.
This bobbin is made rotatable with the main shaft,
This pin is bridged between a pair of ridges so that the heel and the pin can be energized,
This winding belt is wound around the bobbin between one hook and the other hook,
The winder according to claim 3, wherein the winding belt comes into contact with the pin and the winding belt and the pin can be energized.

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