JP2018177488A - Hoist device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hoist device that realizes simpler, smaller, lighter structure of the entire device, at the same time, is able to prevent or minimize unnecessary fall of an object, and is able to perform hoisting and lowering operations timely, continuously, speedily, and efficiently.SOLUTION: A hoist device 1 according to the present invention comprises: a drive force source 2; a rotor 4 around which a traction member for hoisting a target object is wound; and cam mechanisms 78 and 79. The cam mechanisms couple an input member 40 and an output member 50 such that they are integrally rotatable while allowed for partially relative rotation. Also, the cam mechanisms are engaged with a rotation regulating part 60 by axially projecting by relative rotation of the input member 40 in a first direction (a) with respect to the output member 50. Thereby, the members 40 and 50 are coupled to the rotation regulating part 60 so as to be integrally rotatable. Also, by axially separating them from the rotation regulating part 60 by relative rotation of the member 40 with respect to the member 50 in a second direction (b), the member 40 and the member 50 are separated from the rotation regulating part 60.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a hoisting apparatus for hoisting (rolling up) and / or rolling down (pulling out) a traction member by electric or manual operation to raise and lower an object.

  A hoisting device that rolls up and lowers objects such as bedding, packing materials, temporary scaffolds, buildings, fishing tackles and the like to a predetermined position by using the driving force of a motor and manual force has been generally known conventionally. (See, for example, Patent Document 1).

  In addition, in the field of fishing as well, fishing reels are often used as a winding device (see, for example, Patent Document 2).

  These various types of hoisting devices incorporate various mechanisms that allow the objects to be optimally hoisted and unloaded using motorized or manual driving forces.

  For example, the winding machine disclosed in Patent Document 1 includes a drive gear on the drive shaft side and an output shaft between a drive shaft rotated by a motor and an output shaft for rotating a drum for winding the pulling member. Rotation of the drive shaft and / or the output shaft by interposing a power transmission gear formed by meshing with the driven gear on the side, and providing the driven gear rotatably relative to the output shaft and axially movable by a screw mechanism The combination of a brake device that allows the driven gear to move in and out of the brake support to selectively generate a braking force and a ratchet mechanism that allows only one-way rotation allows excessive power when the motor is de-energized. The object is held at a predetermined position so that the object does not fall off (the unnecessary fall of the object is prevented).

  On the other hand, the electric reel disclosed in Patent Document 2 shuts off the transmission of power from the motor to the spool and the motor power transmission path for transmitting the winding power of the motor to the spool via the reduction mechanism (planet gear mechanism). A clutch mechanism is provided for manually or electrically switching between both the motor power cutoff path and the motor power cutoff path that enables the fishing line to be drawn out by setting the spool to free rotation.

JP, 2016-5972, A JP 7-213203

  However, although the winding machine disclosed in Patent Document 1 can prevent the unnecessary dropping of the object while enabling the winding and lowering operations by forward and reverse rotation of the motor, the drive shaft, the output shaft, the power transmission gear, and Power transmission mechanisms, such as braking devices, are juxtaposed laterally of the drum, thus increasing the axial dimension of the entire device. Therefore, for example, it is difficult to be compactly incorporated into various devices, devices and the like which require a hoist.

  On the other hand, the electric reel disclosed in Patent Document 2 described above realizes a structure in which the power transmission mechanism is compactly accommodated in the axial direction while utilizing a planetary gear mechanism, but an object (a weight, a tackle, etc.) In this motorized reel in which the clutch mechanism is switched between the power transmission state and the power cut-off state manually or electrically to wind up and down the object, as described in Patent Document 1, unnecessary dropping of the object (reverse rotation of the spool In addition to the clutch mechanism, it is necessary to additionally provide a non-return mechanism etc. in order to prevent. Therefore, not only the overall size of the motorized hoisting apparatus is necessarily increased in size and weight, but also the structure is complicated, and various built-in mechanisms must be disposed in the space-constrained housing. Also, the quality and maintainability deteriorate.

  Further, in the motor driven reel disclosed in this patent document 2, the work of rolling up and unloading the object is performed through the transmission / separation operation of the power of the clutch mechanism, and therefore timely under the conditions suitable for the field situation. It is difficult to efficiently and efficiently perform winding and unloading operations continuously and quickly.

  The present invention has been made in view of the above-described problems, and it is possible to prevent or minimize unnecessary dropping of an object while simplifying the structure of the entire device and reducing the size and weight. It is another object of the present invention to provide a hoisting device capable of efficiently performing hoisting and lowering operations timely and continuously and quickly.

  In order to achieve the above object, the winding device of the present invention is provided in a device body, and a driving force source for generating a rotational driving force, and rotatably supported by the device body to pull a winding object A rotating member around which a traction member is wound, an input member to which a driving force is input from the driving force source, and an output member receiving the driving force from the input member and outputting the driving force to the rotating member A rotation restricting portion in which only rotation in one direction is permitted and rotation in the other direction is blocked, and the input member and the output member are integrally rotatably coupled while allowing relative rotation of the part, The input member and the output member are coupled to the rotation restricting portion so as to be integrally rotatable by projecting in the axial direction by the relative rotation of the input member with respect to the output member in the first direction and engaging with the rotation restricting portion. As well as before The input member and the output member are separated from the rotation restricting portion by being axially separated from the rotation restricting portion by relative rotation of the input member relative to the output member in a second direction opposite to the first direction. And a cam mechanism for separating.

  According to the above configuration, when the rotational driving force in the first direction (rotational direction) is input to the input member from the driving force source and the input member is relatively rotated in the first direction with respect to the output member, the cam A mechanism protrudes axially to engage with the rotation restricting portion, and the input member and the output member are integrally rotatably coupled to the rotation restricting portion. Therefore, the input member is set such that the rotation of the rotation restricting portion is allowed in this rotation direction (the rotation direction (first direction) is set to the one direction of the rotation restricting portion). The output member rotates integrally with the rotation restricting portion, the rotation of the output member is transmitted to the rotating body, and the rotating body can be rotated in the first direction.

  On the other hand, when the rotational driving force in the second direction (rotational direction) opposite to the previous direction from the driving force source is input to the input member and the input member is rotated relative to the output member in the second direction, the cam Since the input member and the output member are separated and rotated from the rotation restricting portion by axially separating the mechanism from the rotation restricting portion, this rotation direction causes the rotation restricting portion to rotate in the other direction that can not rotate. In spite of the direction, the input member and the output member freely rotate together integrally regardless of the rotation restricting portion, transmit the rotation to the rotating body, and rotate the rotating body in the second direction. be able to.

  On the other hand, when the input of the rotational driving force from the driving force source to the input member is stopped, the rotating body rotates in the second direction, and the output member is relative to the input member in the second direction. When rotated, the input member is relatively rotated in the first direction with respect to the output member, so that the cam mechanism axially protrudes and engages with the rotation restricting portion, and the input member and the output member Is rotatably coupled to the rotation restricting portion. At this time, according to the previous rotation setting of the rotation restricting portion, the rotation restricting portion tries to be rotated in the second direction, that is, the other direction, but the rotation restricting portion is prevented from rotating in this direction. Therefore, it is preferable that the relative allowable rotation amount between the input member and the output member is set as small as possible without the output member and the rotary body rotating more than that (that is, the relative allowable rotation amount between the input member and the output member). ).

  Therefore, in such a rotational operation mode, the first direction is set to the winding direction of the rotating body (the direction in which the pulling member is wound relative to the rotating body), and the second direction is the unwinding direction of the rotating body When the pulling member is set in the direction in which the pulling member is pulled out from the rotating body, the rotating body can be rotated in the winding direction and the drawing direction of the pulling member according to forward and reverse rotation from the driving force source side. It is possible to prevent or minimize unnecessary dropping of the object by blocking rotation of the rotating body in the direction of extension when the driving force input from the vehicle is stopped.

  Therefore, in the above configuration, when the cam mechanism engages with the rotation restricting portion in a state where the force is transmitted from the input member to the output member, the rotational force is transmitted to the rotation restricting portion in one direction, and the output member to the input member Preferably, when the cam mechanism engages with the rotation restricting portion in a state in which the force is transmitted, a rotational force is transmitted to the rotation restricting portion in the other direction.

  As described above, in the above configuration, the cam mechanism has a function to connect the input member and the output member (transfer the rotational force between the input member and the output member), and the input member, the output member, and the rotation restricting portion. And the function of both engaging and disengaging (preventing unnecessary dropping of the object), the number of parts can be reduced and the winding apparatus can be easily made compact ( The structure of the entire hoisting apparatus can be simplified and reduced in size and weight. Moreover, according to such a combined structure of the cam mechanism, since it becomes possible to form an internal gear on the input member and to incorporate a planetary gear therein without affecting the compactification, the axial dimension of the winding device Can be compactly incorporated into various devices, devices and the like which require a hoisting device.

  The cam mechanism includes a cam groove provided on one side of the input member and the output member, an input member, and a cam mechanism, in order to effectively miniaturize the apparatus by such a cam mechanism and to improve the assembling property. It is preferable to have a follower provided on the other side of the output member and engaged with the cam groove and attachable from the radially outer side to the other side.

  Further, according to the above configuration, as described above, the rotating body can be rotated in the winding direction and the unwinding direction of the pulling member according to the forward and reverse rotation from the driving power source side, and the driving from the driving power source side In order to prevent the rotation of the rotating body at the time of force input stop and prevent the extension of the pulling member, it is not necessary to use a clutch mechanism for switching the power transmission state, but the power transmission of winding and unwinding using driving force in both rotational directions By realizing effective control, it is possible to prevent unnecessary dropping of the object. In addition, since the switching operation of the power transmission state by the clutch mechanism is not necessary, the winding and lowering operations can be performed efficiently and continuously and quickly.

  In addition, in addition to being used to roll up and down objects such as bedding, packages, temporary scaffoldings, buildings, fishing tackles, etc., the roll-up device of the above configuration is used as a fishing reel Furthermore, the application field is not limited, such as loading the drone and unloading the package from the drone or rolling up the package to the sky drone. Also, the driving force source can include both electric and manual.

  According to the present invention, it is possible to prevent or minimize unnecessary dropping of the object while simplifying and reducing the size and weight of the entire structure of the device, and winding up continuously and quickly in a timely manner. And a hoisting device capable of efficiently performing the unloading operation.

It is an exploded perspective view of a winding device concerning one embodiment of the present invention. It is the side view which looked at the winding device of FIG. 1 from the power transmission mechanism side. It is sectional drawing in alignment with the AA of FIG. It is sectional drawing in alignment with the BB line of FIG. It is a principal part expansion perspective view of the power transmission mechanism of the winding device of FIG.

Hereinafter, one embodiment of a hoist according to the present invention will be described in detail with reference to the attached drawings.
As shown in FIG. 1 and FIG. 2, the hoisting device 1 according to the present embodiment includes an electric motor 2 as a driving force source for generating a rotational driving force, and a pulling member for pulling an object to be hoisted A housing 6 is provided as an apparatus main body that accommodates and holds a cylindrical rotating body 4 around which the cylindrical rotating body 4 is wound. In this case, the rotating body 4 is rotatably supported by the housing 6 via the bearing 8, and the electric motor 2 can not rotate inside the cylindrical rotating body 4 in a state accommodated in the motor housing 2A. It may be supported and fixed, and may be driven by, for example, a battery (not shown) that can be attached to and detached from the housing 6.

  In addition, according to the use of the winding apparatus 1, a wire, a chain, a rope, a fishing line etc. can be mentioned as said pulling member. The rotating body 4 corresponds to, for example, a spool around which a fishing line is wound when the winding device 1 is used as a fishing electric reel.

  Further, the electric motor 2 and the rotating body 4 are mutually connected by a power transmission mechanism (power transmission path) 10 so as to be capable of transmitting power. In this case, the power transmission mechanism 10 transmits the rotation of the electric motor 2 to the rotary body 4 but does not transmit the rotation of the rotary body 4 to the electric motor 2 side. For example, the input member 40 to be input, the output member 50 that receives the driving force from the input member 40 and outputs the driving force to the rotating body 4, and only rotation in one direction is permitted and rotation in the other direction is blocked A rotation restricting portion 60 (hereinafter referred to as a ratchet member 60) which is a ratchet member, and a cam mechanism to be described later which integrally rotatably connects the input member 40 and the output member 50 while allowing relative rotation of parts; It has a reduction mechanism 12 for reducing the driving force from the electric motor 2 and transmitting it to the input member 40. Further, in the present embodiment, the reduction gear mechanism 12 is configured as a planetary gear mechanism.

  Specifically, the output shaft 2a of the electric motor 2 is connected to the input member 40 via the two-stage first planetary gear mechanism (first reduction mechanism) 12A, and in this case, the output shaft 2a is connected to the output shaft 2a. A pair of sun gears 18, 19 of the first planetary gear mechanism 12A are axially fixed adjacent to each other coaxially with the output shaft 2a so as to be integrally rotatable therewith, and these sun gears 18, A plurality of planet gears 20 and 21 respectively corresponding to 19 are meshed with each other. The planet gears 20 and 21 are rotatably supported integrally by a planet carrier 25 and meshed with an internal gear 27 disposed concentrically with the output shaft 2a and non-rotatably fixed to the motor housing 2A. ing. That is, the planetary gears 20 and 21 rotate between the sun gears 18 and 19 while meshing with the two gears 18 (19) and 27 between the sun gears 18 and 19 and the internal gear 27 arranged concentrically. Along with the inner periphery of the internal gear 27 to revolve around the sun gears 18 and 19. The planet carrier 25 is rotatably supported by the output shaft 2a via the bearing 30, and a shaft 25a extends in the axial direction at the center thereof.

  The shaft 25a of the planet carrier 25 is rotatably supported by a unit housing 70, which will be described later, which is integrally attached to the housing 6 via the bearing 32, and can be integrally rotated with the shaft 25a. The sun gear 35 of the second planetary gear mechanism (second reduction mechanism) 12B is coaxially fixed to the planetary gear 37, and a planet carrier 37 fixed to the motor housing 2A non-rotatably around the sun gear 35. The plurality of planet gears 39 rotatably supported integrally by the gear mesh with each other.

  In addition, the plurality of planetary gears 39 described above of the second planetary gear mechanism 12B are disposed concentrically with the shaft portion 25a of the planetary carrier 25, and an internal gear 40a forming the inner peripheral surface of the annular input member 40. Both are engaged to rotatably support the input member 40. That is, while the planetary gear 39 meshes with both of the concentrically arranged sun gear 35 and the internal gear 40a while the sun gear 35 and / or the internal gear 40a rotates, the planetary gear 39 rotates with the sun gear 35 and / or the internal gear 40a. It revolves around the sun gear 35 along the inner circumference of the internal gear 40a.

  Further, the input member 40 having the internal gear 40a meshing with the planetary gear 39 is connected to the output member 50 via the cam mechanism as described above. The output member 50 is rotatably supported by the unit housing 70 via the bearing 57, and the outer peripheral flange portion 50a is integrally fixed to the rotating body 4 via the fastening member 52 so as to be integrally rotatable. The output member 50 receives the input member 40 in a fitted state in the cylindrical main body portion 50b, and the ratchet member 60 is provided by the outer peripheral surface of the axially projecting portion 50c projecting in the axial direction on the side opposite to the electric motor 2. Is rotatably supported.

  The ratchet member 60 rotates in one direction (in the present embodiment, in the counterclockwise direction A in FIG. 1) by engagement of the ratchet teeth 60A on the outer periphery with the stopper 90 rotatably attached to the unit housing 70. Is permitted to prevent rotation in the other direction (clockwise direction B in FIG. 1 in this embodiment). Therefore, as shown clearly in FIG. 5, the ratchet teeth 60A on the outer periphery of the ratchet member 60 of the present embodiment have a tapered surface 60a which is lowered obliquely in one direction A (counterclockwise) and the tapered surface 60a. And a pair of steps 60b which vertically rise in the radial direction at the lower end of the lower case are continuously provided in the circumferential direction.

  Further, the winding device 1 according to the present embodiment is provided with a level wind device 87 for winding the pulling member in parallel to the rotating body 4. When the electric motor 2 is rotationally driven, the level wind device 87 is a pulling member that is unwound from the rotating body 4 in conjunction with it, that is, via the first and second gears 80 and 82 and a worm gear (not shown). The guide body 88 through which the through member is inserted is reciprocated to the left and right, and has a function of uniformly winding the pulling member around the rotating body 4 along with the winding operation of the pulling member. Here, the first gear 80 constituting the interlocking mechanism is integrally rotatably fixed to the output member 50 via the fastening member 86 (see FIG. 1), and a second gear meshed with the first gear 80. Reference numeral 82 is rotatably supported by the unit housing 70.

  Further, in the winding device 1 according to the present embodiment, as shown in FIG. 1, the input member 40 and the output member 50 including the cam mechanism, the ratchet member 60, and the gears 80 and 82 connected to the level winding device 87 The unit housing 70 is housed in a unit housing 70 and configured as an integral unit U. As described above, by unitizing these components, the assemblability of the winding device 1 is improved.

  In the present embodiment, these components of the power transmission mechanism 10 described above are coaxially and axially compact adjacent to the inside and the side of the rotating body 4 in which the electric motor 2 is housed. In the housing 6 and within the range of the radial dimension of the rotor 4. Such compact storage in the housing 6 involves a dead space by employing a planetary gear mechanism as the reduction mechanism 12A, 12B and arranging the same coaxially with the input member 40 and the output member 50. Can be realized without

  Further, in the present embodiment, the above-described cam mechanism that couples the input member 40 and the output member 50 integrally rotatably while enabling relative relative rotation is a first direction of the input member 40 with respect to the output member 50. (In the present embodiment, the input member 40 and the output member 50 are integrated with the ratchet member 50 by projecting axially and frictionally engaging with the surface of the ratchet member 60 by relative rotation in the counterclockwise direction a of FIG. While being rotatably coupled, the relative rotation of the input member 40 relative to the output member 50 in the second direction opposite to the first direction a (in the present embodiment, clockwise direction b in FIG. 1) The input member 40 and the output member 50 are separated from the ratchet member 60 by being axially separated.

  Specifically, as shown in FIG. 1, in the cam mechanism of the present embodiment, a plurality of cam grooves 78 provided on the side surface of the main body 50 b of the output member 50 and a circle engaged with these cam grooves 78 And a columnar follower 79. A plurality of (three in the present embodiment) cam grooves 78 are provided at predetermined angular intervals (120 in the present embodiment), and along the side surface of the main body 50b of the output member 50, the ratchet member 60 side is provided. Extending obliquely toward the motor 2 side (see FIG. 5). The same number (three in the present embodiment) of followers 79 are provided at positions corresponding to the cam grooves 78, and radially project radially outward through the cam grooves 78, and the inside of the main body 50b of the output member 50 is provided. For example, it is detachably fixed to a follower mounting hole (not shown) provided on the outer surface of the input member 40 facing the side surface. Therefore, according to the cam mechanism having such a configuration, the input member 40 and the output member 50 can be partially rotated, and the relative rotation between the input member 40 and the output member 50 is in the relative axial direction. Converted to move. In the present embodiment, the follower 79 is attached to the input member 40 from the radially outer side (the outer side of the output member 50) through the cam groove 78 at the assembly stage. Such a follower 79 is capable of regulating the rotation angle, and can dispense with a separate rotation regulating member as required in the screw mechanism disclosed in the above-mentioned Patent Document 1. Further, according to such a follower 79, the order of assembly and the degree of freedom in design are increased, and the necessity of screwing operation is eliminated, so that the assembling property can be improved in addition to the reduction of the number of parts.

  Further, in the present embodiment, a plurality of the input members 40 are provided on the facing surface 40a facing the output member 50 at a predetermined angular interval (in the present embodiment, at an angular interval of 120 °) in the circumferential direction (this embodiment) In the embodiment, three arc-shaped projections 74 are provided. Further, on the main surface facing in the axial direction of the main body portion 50b of the output member 50, a through hole (an arc-shaped elongated hole) 72 with which the protrusion 74 engages is provided at a position corresponding to the protrusion 74. In this case, the projection 74 projects toward the ratchet member 60 through the through hole 72 according to the relative rotation of the input member 40 in the first direction a with respect to the output member 50 by the action of the cam mechanisms 78 and 79 described above. And in accordance with the relative rotation in the opposite second direction b, it sinks inside of the through hole 72 (in this sense, the projection 74 and the through hole 72 move along with the cam mechanism) Make up part of the mechanism). The protrusion 74 has an engagement surface 74 a which can be engaged in a frictional contact with the opposite surface of the ratchet member 60 by being protruded to the ratchet member 60 side. And although this engagement surface 74a may be formed as a flat surface substantially parallel to the opposing surface of the ratchet member 60, for example, height becomes high toward the 1st direction a (counterclockwise direction) ( The axial protrusion amount may be increased).

  In the present embodiment, the circumferential length of the through hole 72 is longer than the circumferential dimension of the protrusion 74 so as not to inhibit partial rotation of the input member 40 and the output member 50 by the cam mechanism described above. The length dimension is set larger (the difference between the dimensions in the circumferential direction (that is, the movable amount of the follower 79 along the cam groove 78) becomes the rotation allowable range (relative allowable rotation amount). The frictional contact force between the engaging surface of the projection 74 and the opposing surface of the ratchet member 60 determines the rotational coupling force between the input member 40 and the output member 50 and the ratchet member 60, but the frictional contact force is a cam groove It may depend on the slope of 78. That is, the larger the inclination of the cam groove 78 (the angle with respect to the circumferential direction), the more efficiently the force in the rotational direction can be converted into the axial force, and the projection 74 exerts a larger frictional force on the ratchet member 60 be able to. On the other hand, when the inclination of the cam groove 78 is made closer to the circumferential direction, the rotation angle required to move the projection 74 in the axial direction becomes larger, and as a result, the length of the required cam groove 78 becomes larger. The circumferential length decreases. Therefore, in the present embodiment, design parameters such as the degree of inclination and the length of the cam groove 78 and the amount of projection of the projection 74 are set so as to realize the desired cam action.

  In the winding apparatus 1 configured as described above, when power is applied to the electric motor 2 from a battery or the like (not shown) to rotate the output shaft 2a of the electric motor 2 forwardly, that is, when rotating in the first direction a The rotation is decelerated by the first and second planetary gear mechanisms (deceleration mechanisms) 12A and 12B and transmitted to the input member 40. Thus, when the rotational driving force is input to the input member 40, the input member 40 is rotated relative to the output member 50 in the first direction a, and the input members are operated by the action of the cam mechanisms 78 and 79 described above. Forty projections 74 project axially towards the ratchet member 60 through the through holes 72 of the output member 50. Then, when the protrusion 74 engaged in the through hole 72 abuts on the end 72 a of the through hole 72 in the first direction a, the input member 40 and the output member 50 are integrally rotated in the first direction a. And an axially projecting projection 74 is engaged in frictional contact with the ratchet member 60 to couple the input member 40 and the output member 50 to the ratchet member 60 in an integrally rotatable manner. Therefore, the input member 40, the output member 50, and the ratchet member 60 integrally rotate in the first direction a (one direction A), and the rotation of the output member 50 is transmitted to the rotating body 4 to It can be rotated in direction a. As a result, for example, a traction member (not shown) can be wound at an appropriate speed, for example, around the rotating body 4 (an object coupled to the traction member can be rolled up (lifted up)).

  On the other hand, when the output shaft 2a of the electric motor 2 is reversely rotated, that is, rotated in the second direction b, this rotation is also decelerated to the input member 40 by the first and second planetary gear mechanisms 12A and 12B. Reportedly. Thus, when the rotational driving force is input to the input member 40, the input member 40 is relatively rotated in the second direction b with respect to the output member 50, and the projection is performed by the action of the cam mechanisms 78 and 79 described above. When the projection 74 abuts on the end portion 72 b of the through hole 72 in the second direction b, the input member 40 The output member 50 is integrally rotated in the second direction b. In the second direction b, as the projection 74 is axially separated from the ratchet member 60 as described above, the input member 40 and the output member 50 are separated from the ratchet member 60 and rotated. Is a direction to rotate the ratchet member 60 in the other direction B which can not rotate, the input member 40 and the output member 50 freely rotate together independently of the ratchet member 60, and the rotation thereof Can be transmitted to the rotating body 4 to rotate the rotating body 4 in the second direction b. As a result, for example, a traction member (not shown) can be unrolled from, for example, the rotating body 4 at an appropriate speed (an object coupled to the traction member can be lowered).

  On the other hand, when the electric motor 2 is stopped and no electricity is applied, an excessive force acts on the pulling member, and the rotating body 4 for winding this is rotated in the second direction b, that is, the rotating body When the output member 50 which is integrally rotated with 4 is rotated relative to the input member 40 in the second direction b, the input member 40 is rotated relative to the output member 50 in the first direction a. Thus, the projection 74 axially projects to engage with the ratchet member 60 by the action of the cam mechanisms 78 and 79 described above, and the input member 40 and the output member 50 are integrally rotatably coupled to the ratchet member 60. At this time, the ratchet member 60 is intended to be rotated in the second direction b, that is, the other direction B, but since rotation of the ratchet member 60 in this direction is blocked by the stopper 90, the output member 50 and the rotating body 4 does not rotate any more (that is, more than the aforementioned relative allowable rotation amount between the input member 40 and the output member 50). As a result, the object can be held at a predetermined position so that the object is not dropped by an excessive force (unnecessary falling of the object can be prevented).

  As described above, in the winding device 1 of the present embodiment, the cam mechanism has a function of connecting the input member 40 and the output member 50 (transferring the rotational force between the input member 40 and the output member 50), In addition, since both the function of causing the input member 40 and the output member 50 and the ratchet member 60 to be releasably engageable (preventing unnecessary dropping of the object) using the projection 74 is provided, The number of points can be reduced to easily reduce the size of the winding device 1 (simplifying the structure of the entire winding device 1 and reducing the size and weight). Moreover, according to such a combined structure of the cam mechanism, it is possible to form the internal gear 40a on the input member 40 and incorporate the planetary gear 39 therein without affecting the compactness as in the present embodiment. As a result, the axial dimension of the winding device 1 can be kept small, and the device can be compactly incorporated into various devices, devices and the like that require the winding device 1.

  Further, according to the present embodiment, as described above, the rotating body 4 can be rotated in the winding direction and the unwinding direction of the pulling member according to forward and reverse rotation from the electric motor 2 side, and from the electric motor 2 side To stop the rotation of the rotary member 4 at the time of stopping the driving force input and to prevent the extension of the pulling member, the clutch mechanism for switching the power transmission state is unnecessary, and winding and unwinding utilizing the driving force in both rotational directions By realizing effective control of power transmission, it is possible to prevent an unnecessary drop of an object. In addition, since the switching operation of the power transmission state by the clutch mechanism is not necessary, the winding and lowering operations can be performed efficiently and continuously and quickly.

  In addition, the winding device 1 of the present embodiment can be used for rolling up and lowering objects such as bedding, packing materials, temporary scaffoldings, buildings, fishing tackles and the like to a predetermined position, and as a fishing reel The application field is not limited, for example, it can be used in a drone and unloaded from a drone or rolled up a package to an upper drone.

  As mentioned above, although one embodiment of the present invention has been described with reference to the drawings, the present invention can be variously modified without departing from the scope of the invention, which is limited to the above-described embodiment. For example, in the embodiment described above, the driving force source for generating the rotational driving force is the electric motor, but the rotational driving force may be manually generated. In the embodiment described above, there are three cam grooves and followers (relevant projections and through holes) of the cam mechanism, but the number, configuration, etc. of these cam grooves and followers (protrusions and through holes) are arbitrary. It is set. In the embodiment described above, the cam groove is provided in the output member and the follower is provided in the input member, but in the opposite arrangement form, that is, the follower is provided in the output member and the cam groove is provided in the input member Thus, the follower may project radially inward. Further, the arrangement form of the cam groove and the follower (the protrusion and the through hole) is not limited to the form described above, and the cam mechanism does not have to be composed of the cam groove and the follower. The point is that the structure of the cam mechanism may be any form as long as the action of the cam mechanism described above can be realized.

  In the embodiment described above, the first direction (one direction) is set in the counterclockwise direction, and the second direction (the other direction) is set in the clockwise direction. It may be reversed. In the embodiment described above, the drive of the electric motor may be remotely controlled using a mobile phone, a WiFi communication terminal or the like. Moreover, in the embodiment described above, the rotation restricting portion is configured by the ratchet member, but the rotation restricting portion may be configured by another reverse rotation preventing structure such as a one-way clutch. Further, in the above-described embodiment, a planetary gear mechanism is adopted as the reduction mechanism, but a wave gear device such as a harmonic drive (registered trademark) or a spur gear may be adopted as the reduction mechanism. Further, in the embodiment described above, the electric motor is accommodated in the rotating body, but the electric motor may be provided outside the rotating body.

1 electric hoist 2 electric motor (drive power source)
4 Rotatable body 6 Housing (apparatus main body)
12A 1st reduction mechanism (planet gear mechanism)
12B Second reduction gear mechanism (planet gear mechanism)
40 input member 40a internal gear 50 output member 60 ratchet member (rotation restricting portion)
72 Through hole (cam mechanism)
74 projection (cam mechanism)
78 Cam groove (cam mechanism)
79 follower (cam mechanism)
87 Level Winding Equipment

Claims (8)

A driving force source provided in the device body for generating a rotational driving force;
A rotating body rotatably supported by the device body and on which a pulling member for pulling a to-be-rolled object is wound;
An input member to which a driving force is input from the driving force source;
An output member that receives a driving force from the input member and outputs the driving force to the rotating body;
A rotation restricting portion that allows only one rotation and prevents rotation in the other direction;
The input member and the output member are integrally rotatably coupled while enabling partial relative rotation, and axially projecting by the relative rotation of the input member with respect to the output member in a first direction A second direction opposite to the first direction of the input member with respect to the output member while the input member and the output member are integrally rotatably coupled to the rotation restricting portion by engaging with the rotation restricting portion. A cam mechanism which separates the input member and the output member from the rotation restricting portion by being axially separated from the rotation restricting portion by relative rotation of
A hoisting device comprising:   The cam mechanism is provided on a cam groove provided on one side of the input member and the output member, provided on the other side of the input member and the output member, and engaged with the cam groove. The hoisting device according to claim 1, further comprising: a follower attachable from the radially outer side to the other side.   A protrusion provided on one side of the input member and the output member, and a protrusion provided on the other side of the input member and the output member at a position corresponding to the protrusion and the protrusion due to the action of the cam mechanism And the projection has an engagement surface engageable with the rotation restricting portion in a frictional contact state. A hoisting device according to item 2.   4. A hoist according to any one of the preceding claims, characterized in that the input member comprises an internal gear.   5. The winding-up according to claim 4, further comprising: a planetary gear mechanism for decelerating the driving force from the driving force source and transmitting the same to the input member, wherein a planetary gear constituting the planetary gear mechanism meshes with the internal gear. apparatus.   The hoisting device according to any one of claims 1 to 5, wherein the driving power source is an electric motor.   The winding apparatus according to claim 6, wherein the electric motor is accommodated inside the rotating body.   The winding apparatus according to any one of claims 1 to 7, wherein the input member, the output member, the cam mechanism, and the rotation restricting portion constitute an integral unit.