Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
  • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
  • B66D1/54—Safety gear
  • B66D1/58—Safety gear responsive to excess of load
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
  • B66D3/00—Portable or mobile lifting or hauling appliances
  • B66D3/12—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
  • B66D3/16—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable operated by an endless chain passing over a pulley or a sprocket

Definitions

• the present invention relates to an overload prevention device for a hoist such as a chain block.
• a hoisting machine including a rotary driving member that transmits driving of a driving wheel such as a hand wheel to a pressing driving member is known.
• press drive One having a pan panel for applying an urging force to a member and a rotary drive member is known.
• FIG. 14 is a front view showing a conventional hoisting machine
• FIG. 15 is an exploded perspective view showing a main part of the overload preventing device of the hoisting machine.
• a drive shaft 22 is rotatably passed through a load sheave 21.
• a screw portion 22a is formed on the drive shaft 22, and a pressure receiving member 24 and a drive member 30 are screwed into the screw portion 22a from the side closer to the port sheave 21, and the pressure receiving member 24 is a screw portion 22a. And is fixed to the drive shaft 22.
• the pressure receiving member 24 has a large-diameter disk portion 24a and a small-diameter boss portion 24b concentrically, and the boss portion 24b is sandwiched between a pair of friction members 29 and 29 and has a reverse rotation prevention ring 27. It is fitted.
• the reverse rotation prevention wheel 27 and the friction members 29 and 29 arranged on both sides thereof are configured to be pressed against the disk portion 24a of the pressure receiving member 24 by the drive member 30.
• the anti-reverse wheel 27 is provided with a locking tooth 27a inclined on one side in the circumferential direction on its outer periphery, and the locking tooth 27a engages with a ratchet pawl 28 pivotally supported on the side plate to prevent reverse rotation.
• the wheel 27 is prevented from reverse rotation, and can rotate only in one direction with respect to the drive shaft, that is, the upside direction.
• the front end surface in the axial direction of the flange portion 30a of the drive member 30 is a large-diameter boss portion 30b.
• the same shape of locking teeth 30c is formed on the outer disk surface.
• a rotary drive member 32 is externally fitted to the large-diameter boss portion 30b of the drive member 30, and the axially proximal end surface of the rotary drive member 32 is engaged with the locking teeth 30c of the drive member 30.
• the pawl 32a protrudes toward the axial base end.
• Each locking tooth 32a of the rotary drive member 32 is formed in a shape that is substantially matched with a concave groove formed between the locking teeth 30c of the drive member 30.
• a handwheel 34 is fitted on the outer periphery of the rotation drive member 32.
• the rotation drive member 32 is positioned with respect to the drive member 30 through a disk-shaped rotation restricting member 35 and a pan panel 33 serving as a biasing means on the threaded portion of the small-diameter boss 30d on the distal end side of the drive member 30. This is done by screwing the nut 36.
• a plurality of substantially short engaging protrusions 35a are formed on the inner peripheral portion of the rotation restricting member 35 so as to protrude radially inward.
• the rotation restricting member 35 is capable of moving in the force axis direction in which relative movement in the circumferential direction is restricted with respect to the drive member 30.
• the dish pan 33 applies an urging force to press the rotation drive member 32 in the axial base end direction (the drive member 30 side) via the rotation limiting member 35.
• Patent Document 1 Patent No. 309629 (refer to pages 3-5, Fig. 1 and 2)
• the conventional overload prevention device for a hoisting machine has a structure in which the urging means and the nut that presses the urging means are stacked on the drive member, so that the hoisting machine can be downsized. Therefore, it is necessary to use a small stroke urging means such as a dish panel as the urging means. Therefore, the axial stroke of the urging means is reduced, and the height of the overload prevention locking teeth is also reduced. Therefore, in order to give a high accuracy to the height of the locking teeth, machining or the like is required, resulting in high costs.
• the height of the locking tooth for preventing overload is low, if the manufacturing tolerance is the same, the ratio of the manufacturing tolerance error to the tooth height is larger than that of the tooth with a high locking tooth height. As a result, the variation in slip load increases and the product quality stability is impaired.
• the force stroke required to keep the slip load within a certain range at the time of shipment of the hoisting machine is small, it is affected by the panel pressure error due to the accumulated dimensional error of related parts, and all products are It was necessary to adjust the panel pressure, and the adjustment range was very small, making adjustment difficult and requiring skill.
• the handwheel is guided only slightly in contact with the flange of the drive member. There was a problem that friction was generated on the sliding surface.
• An overload prevention device has been developed that includes a plurality of elastic members that are mounted along the axial direction of the drive member between the back surface of the drive member and the inner end surface of the handwheel and bias the rotary drive member.
• the rotation drive member is biased by a plurality of panels arranged along the axial direction of the drive member, so that the panel pressure received by the rotation drive member is uneven. For this reason, the rotation drive member is likely to be inclined during an overload, and the inclination causes the rotation drive member to interfere with the guide portion on the inner periphery of the handwheel, thus making it difficult to smoothly move in the axial direction. It was. In addition, since the inner end surface of the handwheel is directly pressed against the panel, friction resistance is generated by the panel between the handwheel and the sliding surface of the washer that locks the handwheel and the drive member. Since it was not constant, there was a problem that the slip load between the rotary drive member and the drive member during overload was not constant.
• the present invention solves the above-described problem, and transmits a drive member that is driven in conjunction with the drive of the operation means, and the drive of the drive member to a drive shaft that drives the operation means via the brake means.
• a space having a length substantially the same as the width of the operation means is provided between the inner peripheral surface of the operation means and the outer periphery of the drive member, and the drive is provided in the space.
• a rotating drive member that has a member that engages with the operation means, transmits the drive of the operation means to the drive member, and limits torque transmitted to the drive member by the torque of the operation means;
• a panel member that presses the rotary drive member toward the drive member, and a panel presser that is engaged with the drive member and holds the end of the panel member inside.
• the peripheral surface, the outer peripheral surface of the drive member, and the back surface of the rotary drive member It is formed in the inter-panel pressing, characterized by being arranged in a cylindrical space extending in the axial direction.
• the operation means is a handwheel having an annular guide portion on an inner peripheral end surface, and the outer peripheral surface of the driving member and the outer peripheral surface of the panel presser are in sliding contact with the annular guide portion.
• the drive member has a step portion that restricts the movement of the panel presser toward the rotation drive member, and the panel presser is screwed into the drive member, and is fixed in contact with the step portion. To do.
• the panel member is mounted on the outer periphery of the drive member, and is stretched between the rotation drive member and the panel presser.
• the coil panel is provided.
• the coil spring is a large-diameter coil panel and a small-diameter coil spring layered on the inner periphery of the large-diameter coil panel.
• the panel presser is screwed so as to come into contact with a locking step provided on the drive member and fasten to the drive member when rotating in the same direction as the idling direction of the rotary drive member.
• the spring retainer has an outer diameter larger than the inner diameter of the operation means, and is slidably brought into contact with an annular guide portion provided on the inner peripheral end surface of the hand wheel to guide the hand wheel.
• the operation means is provided with a predetermined gap between the drive member and the panel presser.
• FIG. 1 is a front view of a hoist according to the present invention.
• FIG. 2 is an enlarged view of a main part of the overload prevention device of FIG.
• FIG. 3 is an exploded perspective view of FIG. 2.
• FIG. 4 is a front view of the hand hoist of FIG.
• FIG. 5 is a cross-sectional view taken along line AA in FIG.
• FIG. 6 is a front view of the drive member of FIG.
• FIG. 7 is a plan view of FIG. 6.
• FIG. 8 is a cross-sectional view taken along line AA in FIG.
• FIG. 9 is a front view of the rotary drive member of FIG. 2.
• FIG. 10 is a bottom view of FIG. 9.
• FIG. 11 is a perspective view of FIG. 9.
• FIG. 12 is a front view of the spring retainer of FIG.
• FIG. 13 is a cross-sectional view taken along line AA in FIG.
• FIG. 14 is a front view of a conventional dressing machine.
• FIG. 15 is an exploded perspective view showing a main part of the overload prevention device of FIG.
• Rotation restricting member Upper hook Load chain Hand chain Frame body a Drive side frame b Deceleration side frame c Connection frame d, 18e Bearing plate a Opening
• FIG. 1 is a front view of the hoist according to the embodiment of the present invention
• FIG. 2 is an enlarged view of a main part of the overload prevention device of FIG. 1
• FIG. 3 is an exploded perspective view of FIG. 2
• FIG. 2 is a front view of the handwheel of FIG. 2
• FIG. 5 is a cross-sectional view taken along the line AA of FIG. 4
• FIG. 6 is a front view of the drive member of FIG. —
• FIG. 9 is a front view of the rotary drive member of Fig. 2
• Fig. 10 is a bottom view of Fig. 9
• Fig. 11 is a perspective view of Fig. 9
• Fig. 12 is a front view of the spring retainer of Fig. 2
• Fig. 12 is a cross-sectional view taken along line AA in Fig. 12.
• 1 is a load sheave
• 2 is a drive shaft rotatably supported by the load sheave
• 2 a is a fitting portion with a pressure receiving member 4
• 3 a is a gear provided at the tip of the drive shaft 2.
• 3b meshes with a small gear (not shown) integrated with the reduction gear 3a and rotates the load sheave 1
• 4 is a pressure receiving member
• 4a is a boss portion of the pressure receiving member
• 5 is an anti-reverse wheel
• 6 is an anti-reverse wheel that controls the rotation of the anti-reverse wheel 5 in one direction
• 7 is a spring that urges the nail 6
• 8 is a brake plate
• 9 is an operating means hand.
• the guide member 1 Og of the drive member 10 and the annular guide portion 9e slidably in contact with the guide portion 13c of the panel presser 13 are provided.
• Reference numeral 10 denotes a drive member, and 10a is a female screw portion of the drive member and is screwed to the pressure receiving member 4.
• Reference numeral 10b denotes a flange portion of the drive member 10, which has an outer diameter larger than the inner diameter of the handwheel 9, and its end surface is a disk shape.
• 10c is a boss portion into which the rotational drive member 11 and the spring 12 are fitted
• 10d is an engagement tooth formed on the handwheel side disk surface of the flange portion 10b, and the shape thereof is that of the rotational drive member 11 described later.
• the overload prevention engaging teeth 11a are in close contact with each other.
• the engaging tooth 10d has a locking tooth portion 10j having a steep slope in a substantially right angle direction and an inclined tooth portion 10k having a gentle slope.
• 10e is the thread groove to which the panel presser 13 described later is screwed
• 10f is for positioning where the panel presser contacts
• An engaging step portion, 10g is an outer peripheral surface of the flange 10b, is in sliding contact with the guide portion 9e of the handwheel 9, supports the handwheel
• 10h is a fan-shaped opening
• 10i is an end portion.
• the rotation restricting member 14 fixed to the end of the drive shaft 2 is inserted into the opening 10h, and when the drive member 10 is rotated in the screw loosening direction by the female screw 10a, the drive member 10 is opened.
• the end portion 10i of the mouth portion 10h abuts against the rotation restricting member 14 to restrict the rotation, thereby preventing the drive member 10 from being loosened too much.
• Reference numeral 11 denotes a rotational drive member that fits into the boss portion 10c of the drive member 10, and is fitted in the width direction with the annular link portion l ie and the outer periphery of the annular link portion l ie with the fitting recess 9a of the handwheel 9.
• a fitting protrusion l ib that is a horizontally long protrusion extending in the axial direction of the driving member 10 is provided, and the driving member 10 side end surface of the rotation driving member 11 is provided on the driving member 10 side of the horizontally long protrusion l ib. Therefore, an overload-preventing locking tooth 1 la that protrudes toward the driving member 10 and meshes with the engaging tooth 10 d of the driving member 10 is provided.
• the overload-preventing locking tooth 1 la has a locking tooth part 11 c having a steep slope in a substantially perpendicular direction and an inclined tooth part id having a gentle slope.
• the rotary drive member 11 is movable in the axial direction of the drive member 10 along the fitting recess 9a of the wheel 9 against the biasing force of the panel 12 described later.
• the axial length h of the protrusion l ib is formed to be relatively longer than the thickness of the link portion l ie, and the rotational drive member 11 is Sufficient engagement length is secured to engage in such a way that movement can be transmitted.
• four protrusions l ib are provided on the outer periphery of the annular link portion l ie of the rotation drive member 11, and the handwheel 9 is provided with four fitting recesses 9 a. This number is not limited to four.
• Reference numeral 12 denotes a panel that urges the rotary drive member 11 toward the drive member 10, and the panel 12 includes an inner panel 12 a and an outer spring 12 b, and is mounted on the boss portion 10 c of the drive member 10. It is arranged in the space between the inner inner circumference 9c of the wheel and between the rotation drive member 11 and the panel presser 13.
• the guide wheel 13 is a spring retainer, a screw portion 13a that is screwed into the screw groove 10e of the drive member 10, a contact surface 13b that comes into contact with the locking step portion 10f of the drive member 10 when screwed to the drive member 10, and an outer periphery
• the guide wheel 13 has an outer diameter larger than the inner diameter of the handwheel 9, and has a guide portion 13 c that is in sliding contact with the annular guide portion 9 e of the handwheel 9.
• 14 is fixed to the end of the drive shaft 2, and the driving and braking parts of the lifting machine, which is a rotation restricting member fitted into the opening of the drive member 10, are connected to the handwheel 9 via the rotation drive member 11. This is performed by a so-called mechanical brake composed of a drive member 10, a pressure receiving member 4, a reverse rotation prevention wheel 5, and a brake plate 8.
• the handwheel 9 is provided with a space 9f having a length substantially the same as the width of the inner periphery 9c of the handwheel 1 between the inner peripheral surface 9c and the outer periphery of the drive member 10.
• the drive member 10 and the hand wheel 9 are engaged with each other, and the rotary drive member 11 for transmitting the drive of the hand wheel 9 to the drive member 10 and the boss portion 10c of the drive member 10 are mounted.
• a panel member 12 that presses the rotary drive member 11 toward the drive member 10 and a panel presser 13 that is screwed into the screw groove 1 Oe of the drive member 10 and holds the panel member 12 are provided.
• the drive member 10 is provided with a step portion 10f for restricting the movement of the panel retainer 13 toward the rotation drive member 11 side, and the panel retainer 13 is screwed into the screw groove 10e of the drive member 10.
• the guide portion 13c on the outer periphery of the spring presser 13 is slidably contacted with the annular guide 9e of the handwheel 9 to guide the rotation of the handwheel 9.
• the guide portion 10g of the drive member 10 is configured to be in sliding contact with the annular guide 9e on the drive member 10 side of the handwheel 9 to guide the rotation of the handwheel 9.
• the annular guide 9e of the handwheel 9 is slidably contacted with the guide portion 13c of the spring retainer 13 and the guide portion 10g of the driving member 10, and is supported by these guide portions.
• the spring member 12 mounted on the drive member 10 includes a small-diameter coil spring 12a and a large-diameter coil spring 12b, and between the drive member 10 and the inner periphery 9c of the handwheel 9, the rotary drive member 11 and the panel. It is stretched in a cylindrical space extending straight in the axial direction between the pressers 13.
• a female screw 10 a is screwed inside the driving member 10, and the female screw 10 a is screwed to a screw provided on the outer periphery of the pressure receiving member 4.
• a brake plate 8 is provided on the outer periphery of the pressure receiving member 4 so as to be coaxially rotatable.
• the brake plate 8 is a pair between the pressure receiving portion formed at one end of the pressure receiving member 4 and the drive member 10. Is provided so as to be rotatable. Further, between the brake plates 8, 8, an anti-reverse wheel 5 is provided on the outer circumference of the pressure receiving member 4.
• [0026] 18 is a frame body of the hoisting machine. Molded by lost wax fabrication.
• the frame body 18 includes a drive side frame 18a and a reduction side frame 18b, and a connection frame 18c that connects and couples them.
• the frames 18a and 18b project to the drive side and the reduction side, respectively.
• the drive-side cover 20a and the speed reducer-side cover 20b are attached in close contact with the outer peripheral edge portion.
• An opening 19a directed to the drive side is formed in the drive side overhanging portion of the drive side frame 18a, and a pressure receiving member 4, a brake plate 8, a reverse rotation prevention wheel 5, a claw 6, and a panel 7 are formed in the opening 19a. Be contained.
• An annular groove 19b into which the handwheel 9 is fitted is provided at the side end of the drive side frame 18a, and the handwheel 9 is moved in the axial direction by a mechanical double brake in the annular groove 19b.
• a sufficient space 19c in the axial direction in which the handwheel is fitted to the annular groove 19b is provided in advance.
• the pressure receiving member 4, the brake plate 8, the reverse rotation preventing wheel 5, the claw 6, and the panel 7 that are accommodated in the opening 19 a are arranged in the annular groove 19 b provided at the side end of the drive side frame 18 a. Since the No. 9 is installed, it is sealed from the outside, so that dust can be prevented from entering from the outside, and the performance of the mechanical brake and overload prevention device due to dust can be prevented.
• 18d and 18e are bearing plates that are fixed inside the connecting frame 18c and rotatably support the load sheave 1, and can improve wear resistance of the bearing portion of the load sheave 1.
• the weight can be reduced without reducing the wear resistance.
• the rotation of the handwheel 9 is transmitted to the drive shaft 2 via the rotational drive member 11, the drive member 10, and the pressure receiving member 4, and is decelerated from the drive shaft 2 by the reduction gear 3a and the load gear 3b. Then, drive the sheave 1 at a reduced speed.
• the handwheel 9 includes a coil spring 12, a rotation drive member 11, and a drive member 10.
• the panel 12 urges the rotation drive member 11 in the axial direction, that is, the drive member 10 side.
• the rotation drive member 11 is connected to the fitting convex portion l ib with the fitting concave portion 9a of the hand wheel 9 so as to be rotatable integrally with the hand wheel 9 and slidable in the axial direction.
• the drive member 10 is configured so that the engagement tooth 10d of the drive member 10 meshes with the overload prevention engagement tooth 11a of the rotation drive member 11, and can rotate following the rotation of the rotation drive member 11 during normal rotation. It is summer.
• the drive member 10 presses and rotates the pressure receiving member 4, and the pressure receiving member 4 rotates to rotate the driving shaft 2, and from the driving shaft 2 through the reduction gear 3 a and the load gear 3 b, Rotate load sheave 1 to wind up the load.
• the engagement tooth 11a for preventing overload of the rotary drive member 1 1 is pushed back in the axial direction, gets over the engagement tooth 10d of the drive member 10, and the next engagement tooth 10d of the drive member 10 by the biasing force of the spring 12 In the overload state, the overdrive prevention engagement teeth 11a of the rotation drive member 11 continuously move over the engagement teeth 10d of the drive member 10a.
• the transmission of the torque to the member 10 is limited, and the driving force is not transmitted to the driving member 10.
• a space having a length substantially the same as the width of the hand hoist liner 9 is provided between the inner peripheral surface 9c of the handwheel 9 and the outer periphery of the drive member 10, and the spring is utilized using this space. Since 12a and 12b are installed, the coil spring 12 can be given a large stroke equivalent to the thickness of the handwheel 9, and the coil panel 12 with a large stroke without enlarging the device is used to urge the rotary drive member 10 It can be performed. In addition, the height of the overload prevention engagement tooth 11a of the rotary drive member 11 can be increased according to the stroke size, thus preventing overload. The ratio of the error in manufacturing tolerance to the height of the engaging teeth 11a can be reduced, the occurrence of slip load variation can be suppressed, and the adjustment at the time of shipping of the hoisting machine is unnecessary.
• the rotary drive member 11 since the rotary drive member 11 is urged with a uniform urging force by the coil panel 12 mounted on the outer periphery of the drive member 10, it can move in the axial direction without causing an inclination when overloaded, Since there is no interference with the inner peripheral surface of the handwheel 9, the handwheel 9 can be operated smoothly, and the overload of the handwheel 9 can be detected in a stable state. Furthermore, since the hand wheel 9 is configured not to be affected by the urging force of the coil spring 12, the frictional resistance of the sliding surface during idling is small and stable, and the hand chain 9 is pulled diagonally.
• the coil panel 12 and the rotary drive member 11 are not affected by the operation by the diagonal pulling, so that the overload can be stably detected even during the diagonal pulling. Furthermore, since the annular guide portion 9e of the handwheel 9 is guided by the guide portion 10g on the outer peripheral surface of the flange 10b of the drive member 10 and the guide portion 13c of the spring retainer 13, even if the hand chain is tilted and operated, Since the handwheel 9 does not tilt, stable operation is possible.
• the panel presser mounting device of the present invention is provided with a fitting projection l ib fitted into the fitting recess 9a of the handwheel 9 and an overload prevention provided at the tip of the fitting projection l ib.
• a rotary drive member 11 having an engagement tooth 11a, and a drive member 10 having a panel presser locking step portion 10f which is engaged with the overload prevention engagement tooth 11a and interlocked with the drive of the rotary drive member 11;
• a panel member 12 that urges the rotary drive member 1 1 toward the drive member 10 and a panel presser 13 that is screwed into a screw groove 10e provided at the end of the drive member 10 and pushes the end of the panel member 12
• the panel presser 13 is screwed so as to be fastened to the screw groove 10e of the drive member 11 when rotated in the same direction as the idling direction of the rotary drive member 11, and the end surface of the panel presser 13 is locked to the drive member 10.
• the process of mounting and setting the drive member 10, the rotary drive member 11 and the spring member 12 to the handwheel 9 can be performed only by the process of screwing the spring retainer 13 to the drive member 10. Compared to conventional equipment, the number of parts and assembly man-hours can be greatly reduced. Further, by bringing the spring retainer 13 into contact with the engaging step portion 10f of the driving member 10, the panel setting is completed and adjustment is not necessary. Panel presser 1 3 is fastened to the drive member 10 in the same direction as the idling direction of the rotary drive member 11.
• the present invention provides a function for restricting the movement of the wheel and the outside wheel in the axial direction, a function for pressing the panel, and a function for preventing loosening of the means (nut) for pressing the panel with only the drive member and the panel presser. It is possible to solve all of these problems, and it is not necessary to provide the rotation restricting member 35 provided in the overload prevention device in Figs. 14 and 15 in the conventional lifting machine. The number of parts can be reduced and the cost can be reduced.
• the overload prevention device of the present invention is a panel member having a large stroke without enlarging the device.
• the rotation drive member can provide an overload prevention device that operates without being subjected to fluctuations in the urging force by the spring member.
• the disc spring is used as the urging means, the stroke in the axial direction is small. Therefore, the force in which the height of the engagement teeth is also small.
• a space approximately the same length as the width of the handwheel is provided between the inner peripheral surface of the drive member and the outer periphery of the drive member. Using this space, a coil panel is mounted on the outer periphery of the drive member, and the hand is attached to the coil panel.
• the rotary drive member since the rotary drive member is urged with a uniform urging force by the coil panel mounted on the outer periphery of the drive member, the rotary drive member can move in the axial direction without causing an inclination when overloaded, and the hand wheel Smooth operation of the handwheel because there was no interference with the inner surface
• overloading of the handwheel can be detected in a stable state.
• the handwheel since the handwheel is configured not to be affected by the urging force of the spring member, the frictional resistance of the sliding surface during idling is small and stable. Even in this case, the panel member and the rotary drive member are not affected by the operation by the slanting bow I, so that overload can be stably detected even during slanting.
• the handwheel is guided by the guide surface of the flange of the drive member and the guide surface of the spring presser, even if the hand chain is tilted, the handwheel does not tilt, so stable operation is possible. Is possible. Further, by using a double spring as a coil spring, a large biasing force can be obtained with a short length, so that the axial length of the panel can be shortened and the hoisting machine can be downsized.
• the step of mounting and setting the drive member, the rotation drive member, and the panel member on the operation means is performed only by the step of screwing the panel presser into the drive member and contacting the panel presser locking step.
• the panel presser is screwed so as to be fastened to the drive member when it is rotated in the same direction as the idling direction of the rotary drive member. Because of this, it is possible to prevent fluctuations in the operating load due to loose panel pressers.
• the present invention provides a function for restricting the movement of the hand wheel in the outer axial direction, a function for pressing the panel, and a function for preventing loosening of the means for pressing the panel (nut) by using only the driving member and the panel presser. Solve by combining

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
• Braking Arrangements (AREA)
• Cage And Drive Apparatuses For Elevators (AREA)

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• 2006
  • 2006-03-02 DE DE112006000681.9T patent/DE112006000681B4/de not_active Expired - Lifetime
  • 2006-03-02 WO PCT/JP2006/303981 patent/WO2006103866A1/ja not_active Ceased
  • 2006-03-02 KR KR1020077022142A patent/KR101156519B1/ko not_active Expired - Lifetime
  • 2006-03-09 TW TW095107902A patent/TW200702281A/zh unknown

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