JP2019082223A - Driving device - Google Patents

Abstract

To provide a driving device that has good operability and also can have a manipulated variable equal to or larger than a length of a long-sized member.SOLUTION: A driving device 1 comprises a long-sized member 2, a drum 3, a drum energizing member S1, a rotary member 4, a rotation restricting member 6 provided with an engaging/disengaging part 61, and a rotary member energizing member S2, a separating mechanism S which separates the rotary member 4 from the drum 3 in an axis-X direction and a loose fitting mechanism L which allows the rotary member 4 and drum 3 to transition between an engagement state and a relative movement allowed state are provided between the rotary member 4 and drum 3, and the separating mechanism S is provided with a guide part Sa which guides the rotary member 4 to separate from the drum 3, and a connection part Sb connected to the guide part Sa to move relatively.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a drive device.

  The drive device for rotating the operation target is easy to operate and has a small stroke amount, so a flexible long member such as an endless cable is hooked between the drive wheel connected to the operation target and the wire pulley An apparatus for operating an operation target by rotating a wire pulley is used (see, for example, Patent Document 1).

JP 2011-245914 A

  Such endless long members, because they are endless, require a loop portion to be caught easily and a space for moving the long members. Therefore, the apparatus becomes large if it is used as a cover that covers the long member. Further, in order to drive the drive wheel to rotate only by the pulling operation, the long member needs a length longer than the stroke of the pulling operation, or a load must be continuously applied to the long member during the operation.

  An object of the present invention is to provide a drive which can be easily driven by an operation in which a short operation amount of a long member is repeated a plurality of times.

  The drive device according to the present invention includes a flexible long member, a drum connected with one end of the long member to wind and take out the long member, a drive shaft coaxial with the drum, and the drum A drum biasing member urging the long member in a winding and rotating direction, a rotating member rotating in the same direction as the drum rotates, and a load member applying a load to the rotation of the rotating member A rotation restricting member provided with an engagement / disengagement portion capable of engaging and disengaging with the rotation member; and a rotation member urging member urging the rotation member toward the drum, and the rotation member and the drum A separation mechanism for separating the rotation member in the axial direction with respect to the drum, and a loose fitting mechanism capable of transitioning between the engagement state and the relative movement permission state of the rotation member and the drum are provided between And the separating mechanism includes the rotating member A guide portion for guiding in a direction relatively away from the drum in the axial direction, and a connection portion for relative movement by connecting to the guide portion are provided, and the drum is rotated to one side by the protracting operation of the long member In doing so, in the relative movement permission state of the loose fitting mechanism, the rotary member causes the guide portion to relatively separate the connecting portion due to the difference in rotational speed in rotation to one of the rotary member and the drum. By guiding in a direction to move away from the drum side, the engagement / disengagement portion engages with the rotating member, and the loose fitting mechanism is engaged, thereby When the relative rotation is suppressed and the feeding operation of the long member is released, the rotary member is moved to the drum side by the biasing of the rotary member biasing member, and the engagement / disengagement of the rotation regulating member is performed. Is engagement release of the drum the drum is rotated in the other by the biasing force of the drum biasing member, said drum winding the elongated member to rotate together with the rotating member.

  According to the drive device of the present invention, the operability is good, and the operation amount equal to or more than the length of the long member can be obtained.

It is a side view which shows the raising / lowering member operating device provided with the drive device of one Embodiment of this invention. It is a disassembled perspective view of the drive device shown by FIG. It is a front view of the state which removed the 1st case member of the drive device shown by FIG. It is the schematic which shows the modification of the outer tube used for the drive device shown by FIG. It is a rear view which shows the state which removed the 2nd case member of the drive device shown by FIG. It is a front view which shows the drive device of the state by which the outer tube was operated from the state shown by FIG. It is the schematic which shows the state which the drum and rotation member which are used for the drive device of FIG. 1 adjoined. FIG. 8 is a schematic view showing a state in which the drum and the rotating member are slightly separated from each other by the separating mechanism from the state shown in FIG. 7; FIG. 9 is a schematic view showing a state where the drum and the rotation member are separated from each other by the separation mechanism from the state shown in FIG. 8 and the rotation member and the rotation restricting member can be engaged with each other. FIG. 10 is a schematic view showing a state in which the rotating member and the rotation restricting member engaged with each other are interlocked and rotated from the state shown in FIG. 9;

  Hereinafter, a drive device according to an embodiment of the present invention will be described with reference to the drawings. The following embodiment is merely an example, and the drive device of the present invention is not limited to the following embodiment. Hereinafter, an example in which the driving device is applied to the elevating member operating device will be described. However, the drive device of the present invention may be applied to devices other than the elevating member operating device.

  As shown in FIG. 1, in the present embodiment, the elevating member operating device A includes an elevating mechanism M including the elevating member W, and the driving device 1 connected to the elevating mechanism M. The elevating member operating device A operates the elevating member W by the driving force generated by the drive device 1.

  The elevating member W operated by the elevating member operating device A is a shielding fence in the present embodiment, but may be another shielding body such as a protective fence or a protective rope. The lifting member W is configured to rotate around a predetermined axis. In the present embodiment, as shown in FIG. 1, the lift member W is configured to rotate around the horizontal axis, but may rotate around the vertical axis. In addition, the elevating member W is not limited to one that rotates around a predetermined axis, and may be configured to slide in the horizontal direction or the vertical direction.

  The lifting and lowering mechanism M lifts and lowers the lifting and lowering member W by the driving force generated by the drive device 1. The lifting and lowering mechanism M converts the operation force output from the drive device 1 into the lifting and lowering operation of the lifting and lowering member W, and lifts and lowers the lifting and lowering member W. In the present embodiment, the lifting mechanism M receives the rotational force from the drive device 1 and lifts and lowers the lifting member W by the rotational force.

  As shown in FIG. 1, the lifting mechanism M includes a lifting member W provided on the base F, an operating member M1 for moving the lifting member W to an initial position and an operation end position, and a driving force generated by the drive device 1 And a transmission mechanism M2 for transmitting the driving force to the operation member M1. In the present embodiment, the initial position of the lifting member W is, as shown by the solid line in FIG. 1, from the inside to the inside of the base F from the vertically extending opening provided in the base F as the housing. It is a position extending horizontally. The operation end position of the lifting and lowering member W is a position at which the lifting and lowering member W has reached a predetermined position on the upper side of the substrate F, as shown by a two-dot chain line in FIG. After moving to the operation end position, the elevating member W moves again to the initial position, and ascends and descends between the initial position, which is the lowered position, and the operation end position, which is the raised position. The initial position and the operation end position of the elevating member W are appropriately changed according to the operation range and the operation method of the elevating member W.

  The structure of the operation member M1 is not particularly limited as long as the elevating member W can be moved between the initial position and the operation end position using the driving force transmitted by the transmission mechanism M2. In the present embodiment, as shown in FIG. 1, the actuating member M1 includes a connecting portion M12 connected to the base F and the elevating member W, an actuating arm M11 for moving the elevating member W connected to the connecting portion M12, and It has a shaft portion M13, which is a rotation axis of the arm M11, and a lifting member W. In addition to the arm mechanism as described above, the actuating member M1 may be configured to convert the rotational operation output by the transmission mechanism M2 into a linear operation to cause the elevating member W to perform a linear operation, or the transmission mechanism The rotational operation output by M2 may be transmitted as a rotational operation around the rotation axis of the elevating member W. In addition, when the operation force by the linear operation is output from the transmission mechanism M2, the operation member M1 may transmit the operation force by the linear operation from the transmission mechanism M2 as a linear operation or may transmit it as a rotational operation. Good.

  The transmission mechanism M2 transmits the driving force generated by the drive device 1 to the actuating member M1. In the present embodiment, the transmission mechanism M2 transmits the rotational force generated by the drive device 1 to the actuating member M1. The driving device 1 may output an operation force by a linear operation or the like other than the rotational operation, in which case the transmission mechanism M2 may transmit the operation force other than the rotational operation to the actuating member M1.

  The structure of the transmission mechanism M2 is not particularly limited as long as the drive force generated by the drive device 1 can be transmitted to the actuating member M1. In the present embodiment, as shown in FIG. 1, the transmission mechanism M2 includes a first transmission gear M21 connected to the actuating member M1 and a second transmission gear M22 engaged with the first transmission gear M21. . The second transmission gear M22 is directly or indirectly connected to a rotation axis Ax1 (see FIG. 1) provided on the drive device 1 side. In the present embodiment, the first transmission gear M21 is connected to the coupling portion M12, and the first transmission gear M21 is rotated to operate the coupling portion M12 that is connected, and the actuating arm M11 to which the coupling portion M12 is connected. The elevating member W is moved up and down by swinging. The second transmission gear M22 meshes with the first transmission gear M21 to rotate the first transmission gear M21. The second transmission gear M22 is connected to the rotation axis Ax1 and rotates by rotation of the rotation axis Ax1. In the present embodiment, the first transmission gear M21 is a sector gear, and the second transmission gear M22 is a worm gear. The shape and structure of the first transmission gear M21 and the second transmission gear M22 are particularly limited as long as the actuating member M1 can be moved via the second transmission gear M22 and the first transmission gear M21 by rotation of the rotation axis Ax1. I will not. For example, the combination of the first transmission gear M21 and the second transmission gear M22 can be appropriately selected from various gears such as a worm gear, a spur gear, and a bevel gear.

  The driving device 1 is a device for driving an operation target such as the elevating member W. The operation target by the drive device 1 is the elevation member W in the present embodiment, but is not limited to the elevation member W.

  As shown in FIG. 2 and FIG. 3, the drive device 1 winds the long member 2 by connecting the flexible long member 2 and one end 2 a (see FIG. 3) of the long member 2. It has a drum 3 to be fed out. Further, in the present embodiment, as shown in FIG. 2, the drive device 1 is provided with a drive shaft Ax 2 coaxial with the drum 3 and a drum for urging the drum 3 in the direction of winding and rotating the long member 2. A biasing member S1, a rotating member 4 that rotates in the same direction as the drum 3 rotates, a load member 5 that applies a load to the rotation of the rotating member 4, and an engagement / disengagement portion 61 that can disengage from the rotating member 4 And a rotation member urging member S2 for urging the rotation member 4 to the drum 3 side. In the present embodiment, the drum 3 and the drive shaft Ax2 are provided coaxially. The driving device 1 includes a drum biasing member S1 that biases the inner cable 2 in a winding and rotating direction.

  The driving device 1 rotates the drum 3 to one side by the operation of the long member 2, and a transmission member (rotation member 4, rotation restriction member 6, etc.) directly or indirectly connected to the drum 3 by rotation of the drum 3. Is operated to operate the operation target such as the elevating member W. In the present specification, one rotation direction of the drum 3 when the long member 2 is operated is referred to as a first direction D1. The first direction D1 is also used in the rotational direction or movement direction of each member that operates in conjunction with the rotation of the drum 3 when the drum 3 is rotated by the operation of the long member 2. The first direction D1 is used not only in the rotational direction of a rotating member such as a gear rotating in conjunction with the drum 3 but also in the moving direction of a linearly moving member such as a driven member 7 described later. The gears meshing with each other have mutually opposite rotational directions, but the rotational direction or movement direction of each member operating in conjunction with the rotation of the drum 3 is referred to as a first direction D1, and the absolute rotational direction or movement direction is It does not mean. Further, the second direction D2 refers to the rotational direction or the direction of movement of each member that operates in conjunction with the operation of the outer tube T1 described later. In the present embodiment, the first direction D1 is the rotational direction or movement direction of each member when the elevating member W descends, and the second direction D2 is rotation of each member when the elevating member W ascends Direction or movement direction.

  In the present embodiment, the drive device 1 rotates the rotation axis Ax1 as the output shaft of the drive device 1 by the rotation of the drum 3. The rotation of the rotation axis Ax1 is transmitted to the lift mechanism M, and the lift member W to be operated is operated by the lift mechanism M. The drive device 1 has a case C (see FIG. 1) that accommodates the drum 3 and various members of the drive device 1. In the present embodiment, the case C is attached to a support such as the base F as shown in FIG. In the present embodiment, the case C has a plurality of case members as shown in FIG. However, the shape of the case C is not particularly limited as long as various members of the drive device 1 can be accommodated, and can be appropriately changed depending on the arrangement of the members constituting the drive device 1. In the present embodiment, as shown in FIG. 2, in the space between the first case member C1 having the drum accommodation portion and the plate-like second case member C2, the drive shaft Ax2, the drum biasing member S1, the drum 3, a rotation member 4, a rotation member biasing member S2, a rotation restriction member 6, a driven member 7 described later, and the like are accommodated. Further, in the space between the third case member C3 and the fourth case member C4, the respective members of the operation assisting mechanism 8 described later are accommodated. The space on the side of the operation assisting mechanism 8 and the space on the side of the drum 3 are separated by a second case member C2 which is a partition wall.

  The long member 2 is a member for transmitting a rotational force to the drum 3. The elongated member 2 is flexible and can be taken up from the drum 3 and unwound from the drum 3. As shown in FIG. 3, the long member 2 has one end 2 a connected to the drum 3 and the other end 2 b having the operation portion P. When the operation part P is operated and the long member 2 is pulled, the long member 2 is drawn from the drum 3 and the drum 3 rotates around the drive shaft Ax2. By operating the operation target by rotating the drum 3 using the long member 2, remote control of the operation target is possible. Therefore, it can be suitably used for a device where operation from a remote position is desired, such as a parking lot blocking device.

  The structure of the long member 2 is flexible and is not particularly limited as long as the drum 3 can be operated. In the present embodiment, the elongated member 2 is an inner cable. Moreover, although the operation part P is formed in spherical shape by this embodiment, if the long member 2 can be operated, the shape of the operation part P will not be specifically limited. In the present embodiment, as shown in FIG. 2 and FIG. 3, an outer tube T1 that covers the outer periphery of the elongated member 2 is provided in the axial direction of the elongated member 2. Moreover, the cylindrical member T2 which covers the outer periphery of outer tube T1 is further provided in the outer periphery of outer tube T1.

  The outer tube T1 covers the outer periphery of the elongated member 2. The outer tube T1 protects the outer periphery of the elongated member 2 along the axial direction of the elongated member 2 and suppresses the exposure of the elongated member 2. As shown in FIG. 3, one end 2a of the elongated member 2 extends from one end T11 of the outer tube T1. The other end 2b of the elongated member 2 extends from the other end T12 of the outer tube T1.

  Outer tube T1 is operated at the time of operation of the operation target in the direction opposite to the operation direction of the operation target by long member 2 in this embodiment. In the present embodiment, the drive device 1 is configured to operate the elevating member W in the lowering direction by the operation of the long member 2 and to operate the elevating member W in the elevating direction by the operation of the outer tube T1. The driving device 1 may be configured to operate the elevating member W in the upward direction by the operation of the long member 2 and to operate the elevating member W in the downward direction by the operation of the outer tube T1. Further, in the present embodiment, the elevating member W is operated by the operation of the outer tube T1. For example, the drive device 1 is provided with two long members (inner cables), and each long member (inner) Each of the raising operation and the lowering operation of the raising and lowering member W may be performed by a cable).

  One end T11 of the outer tube T1 is connected to the driven member 7 as shown in FIG. 3, and the other end T12 is located on the other end 2b side of the long member 2. When the other end T12 of the outer tube T1 is pulled, the outer tube T1 axially moves inside the cylindrical member T2, and one end T11 of the outer tube T1 connected to the driven member 7 moves the driven member 7 Move it. The shape of one end T11 of the outer tube T1 is not particularly limited as long as it can be connected to the driven member 7. In the present embodiment, as shown in FIG. 3, one end T11 of the outer tube T1 has an actuating end T111 engaged with the driven member 7 in order to operate the driven member 7. In the present embodiment, the actuating end T111 is configured as a cylindrical end member larger than the outer diameter of the outer tube T1. As shown in FIG. 3, the other end T12 of the outer tube T1 is provided with an operation end T121 which is operated to operate the outer tube T1. In the present embodiment, by operating the operation end T121, the actuating end T111 moves with the outer tube T1, and the driven member 7 to which the actuating end T111 is connected is moved. The shape of the operation end T121 is not particularly limited as long as the outer tube T1 can be operated. In the present embodiment, as shown in FIGS. 2 and 3, the operation end portion T121 is formed in a skirt shape in which the other end 2b side (the lower side in FIGS. 2 and 3) of the elongated member 2 is expanded. ing.

  The outer tube T1 is formed in a cylindrical shape with both ends open, and accommodates the long member 2 so that the long member 2 can move in the axial direction with respect to the outer tube T1. The structure of the outer tube T1 is not particularly limited as long as it can be accommodated so that the elongated member 2 can move in the axial direction. In the present embodiment, the outer tube T1 includes a spiral metal member TM (see FIG. 4) extending from the operation end T121 side to the actuation end T111. For example, as shown in FIG. 4, the outer tube T <b> 1 can be formed into a tubular shape by spirally winding a flat steel wire (metal member TM) at a predetermined pitch. In the outer tube T1, a resin liner may be provided on the inner periphery of the metal member TM, or a plurality of steel wires (metal members) may be twisted around the outer periphery of the resin liner.

  The tubular member T2 guides the outer tube T1 when the outer tube T1 moves. The tubular member T2 extends along the extending direction of the outer tube T1, as shown in FIG. The cylindrical member T2 covers the outer periphery of the outer tube T1 extending from the case C up to the operation end T121. One end T21 of the cylindrical member T2 is fixed to the case C (see FIG. 5), and the other end T22 is located on one end side (upper side in FIG. 3) of the operation end T121. The cylindrical member T2 has an enlarged diameter end portion T211 which is expanded in diameter at one end T21 of the cylindrical member T2 as shown in FIG. 3 and FIG. The cylindrical member T2 is held by the case C at the enlarged diameter end portion T211. The case C has an attachment portion Ca (see FIG. 5) to which the enlarged diameter end portion T211 is attached, and the enlarged diameter end portion T211 engages with the attachment portion Ca of the case C in the axial direction. Axial movement is restricted. The other end T22 provided on the opposite side of the enlarged diameter end T211 of the cylindrical member T2 has a protective end T221. The protective end T221 abuts on one end side (upper side in FIGS. 3 and 5) of the operation end T121 of the outer tube T1, and the operation end T121 of the outer tube T1 is closer to the operation end T111 than the predetermined position. It is configured not to move (upper side in FIGS. 3 and 5). Thus, the position of the operation end T121 is held at a predetermined position.

  The driven member 7 is operated by the outer tube T1 when operating the operation target in the direction opposite to the operation direction of the operation target by the long member 2. As shown in FIG. 6, the driven member 7 operates the engaging portion G1 described later by operating and moving the outer tube T1, and slightly rotates the rotation axis Ax1 in the second direction D2. In the present embodiment, when the drive device 1 applies an initial rotational force to the rotation axis Ax1 via the driven member 7 and the meshing portion G1, the rotation shaft is moved such that the operation target such as the elevating member W moves to the operation end position. It has an operation assisting mechanism 8 (see FIG. 2) for rotating Ax 1 continuously. The operation assisting mechanism 8 will be described later.

  The driven member 7 is connected to the end (actuating end T111) on the drum 3 side of the outer tube T1. In the present embodiment, as shown in FIG. 3, the driven member 7 has a connecting portion 72 to which one end T11 (actuating end T111) of the outer tube T1 is connected. The driven member 7 moves in the case C by operating the outer tube T1. As shown in FIGS. 2 and 3, the case C is provided with a driven member guide portion Cg for guiding the driven member 7, and the driven member 7 moves along the driven member guide portion Cg. The structure of the driven member guide portion Cg is not particularly limited as long as it can guide the driven member 7 in a predetermined moving direction. In the present embodiment, the driven member guide portion Cg is a guide groove, and the guide projection 71 (see FIG. 5) provided on the driven member 7 is guided along the driven member guide portion Cg.

  In the present embodiment, as shown in FIG. 3, the driven member 7 is biased by the elastic member S3 such as a spring in a direction (upper side in FIG. 3) opposite to the moving direction of the driven member 7 by the outer tube T1. It is done. In this case, when the operation of the outer tube T1 is released after the operation of the outer tube T1 is completed, the driven member 7 is moved to the initial position (the position before the operation of the outer tube T1) by the elastic force of the elastic member S3. It can be returned. The elastic member S3 only needs to be capable of urging the driven member 7 back to the initial position, and the position at which the elastic member S3 is provided is not particularly limited.

  The driven member 7 is engageable with a meshing portion G1 capable of rotating the rotation axis Ax1, as shown in FIGS. 2 and 3. In the present embodiment, the driven member 7 is provided with a drive engagement portion 73 which can be engaged with the meshing portion G1. The driving engagement portion 73 engages with the meshing portion G1 by the movement of the driven member 7, and rotates the rotation axis Ax1 in the second direction D2 by moving the meshing portion G1. The driving engagement portion 73 may be a tooth portion provided on the outer periphery of the rotation axis Ax1 as long as the rotation shaft Ax1 can be rotated by engaging with the meshing portion G1 by moving the driven member 7 Alternatively, it may be a member connected to the rotation axis Ax1 so as to rotate the rotation axis Ax1. In the present embodiment, the meshing portion G1 is a drive gear G11 (see FIGS. 2 and 3) connected to the rotation axis Ax1. In the present embodiment, the drive gear G11 is connected to the rotation axis Ax1, and meshes with the transmission gear G12 (see FIG. 2), and is connected to the rotation restricting member 6 via the transmission gear G12. When one of the transmission gear G12 and the rotation restricting member 6 is rotated, the other is also rotated. The drive engagement portion 73 provided on the driven member 7 can be engaged with the meshing portion G1. In the present embodiment, the drive engagement portion 73 constitutes a ratchet mechanism together with the gear 6 as shown in FIGS. 2 and 5. The drive engagement portion 73 is at a projecting position (see the practice in FIG. 5) projecting toward the drive gear G11 with respect to the driven member 7 and a retracted position at which the drive engagement portion 73 retracts to a position not engaged with the drive gear G11. And the two-dot chain line in FIG. In the present embodiment, the drive engagement portion 73 is biased toward the protruding position by an elastic member S4 (see FIG. 2) such as a torsion spring.

  In the present embodiment, as shown in FIGS. 2 and 5, the drive engagement portion 73 is rotatably attached to the driven member main body 74 about an axis extending parallel to the rotation axis of the drive gear G11. There is. The driven member main body 74 is a moving member which moves along the driven member guiding portion Cg by the operation of the outer tube T1, as shown in FIG. As shown in FIG. 2, FIG. 3 and FIG. 5, the drive engagement portion 73 extends from the shaft portion 73a provided with a shaft and from the shaft portion 73a toward the drive gear G11, and its tip end is a tooth of the drive gear G11. And the claws 73b engaged with the In the present embodiment, as shown in FIGS. 5 and 6, when the drive engagement portion 73 rotates the drive gear G11 in the second direction D2 (counterclockwise in FIG. 6), the drive engagement portion 73 The rotation around the shaft 73 a is configured to be restricted. In the present embodiment, the claw portion 73b biased by the elastic member S4 abuts on the contact portion 74a (see FIG. 5) provided on the driven member main body 74, whereby the contact portion 74a of the drive engagement portion 73 The rotation in the direction to the direction is restricted, and the drive engagement portion 73 is held at the projecting position. In the present embodiment, the elastic member S4 is provided between the claw portion 73b of the drive engagement portion 73 and the driven member main body 74. The position at which the elastic member S4 is provided is not particularly limited as long as the elastic member S4 can be biased so that the claw portion 73b of the drive engagement portion 73 is located at the projecting position. Further, the drive engagement portion 73 is not limited to one that rotates around the shaft portion 73a, and may linearly reciprocate between the projecting position and the retracted position.

  In the present embodiment, at the initial position where the driven member 7 is not operated by the outer tube T1, as shown in FIG. 3, the driven member 7 in which the drive engagement portion 73 is in the projecting position engages with the drive gear G11. It is positioned in the wrong position. When the outer tube T1 is operated and the driven member 7 moves toward the operating position (see FIG. 6) in the second direction D2, the drive engagement portion 73 engages with the drive gear G11, and the drive gear 7 G11 is rotated in the second direction D2. Thereby, the drive device 1 operates the operation target such as the elevation member W. The driven member 7 (see FIG. 6) moved to the operation position by the operation of the outer tube T1 moves toward the initial position by the elastic member S3 when the operation of the outer tube T1 is released. In that case, the drive engagement portion 73 rotates around the shaft portion 73a to the retracted position, and passes over the teeth of the drive gear G11 so that the drive gear G11 is not rotated in the first direction D1. It is possible to return to the initial position of the member 7.

  The meshing portion G1 is not limited to one having the drive gear G11, as long as it engages with the drive engagement portion 73 of the driven member 7 to transmit the force for rotating the rotation axis Ax1. Further, in the present embodiment, as shown in FIG. 2, the drive gear G11 is directly connected to the rotation axis Ax1, but the rotation axis Ax1 is indirectly connected to the rotation axis Ax1 via another member such as another gear. May be connected.

  Further, in the present embodiment, as shown in FIG. 3 and FIG. 5, the end portion of the outer tube T1 is provided with a locking portion 75 engaged with a tooth portion 62 provided on the rotation restricting member 6 described later. It is done. In the present embodiment, the locking portion 75 is provided on the driven member 7 and indirectly on the end of the outer tube T1 via the driven member 7. However, for example, it may be provided at an operation end T111 or the like provided at one end T11 of the outer tube T1.

  The locking portion 75 engages with the tooth portion 62 of the rotation restricting member 6 to restrict the rotation restricting member 6 from rotating in the second direction D2. In the present embodiment, the locking portion 75 regulates the rotation of the rotation regulating member 6 by operating the outer tube T1 (see FIG. 3) and a permissible position (see FIG. 6) which permits rotation of the rotation regulating member 6. It can move between). In the present embodiment, the driven member 7 has an engagement position (see FIG. 3) at which the locking portion 75 and the rotation restricting member 6 are engaged, and a driven member guiding portion Cg in which the driven member 7 is provided in the case C. By moving between the release position (see FIG. 6) where the engagement between the locking portion 75 and the rotation restricting member 6 is released by moving along, the locking portion 75 is in the restricted position and the permitted position. Move between and. The locking portion 75 engages with the tooth portion 62 of the rotation restricting member 6 when the outer tube T1 is at the restricting position (when the driven member 7 is at the engagement position), such as when the outer tube T1 is not operated. The rotation of the rotation restricting member 6 in the second direction D2 is restricted. Although the details will be described later, in the present embodiment, when the rotation of the rotation restricting member 6 in the second direction D2 is restricted, the rotation of the rotation axis Ax1 in the second direction D2 is restricted, and the raising direction of the elevating member W Movement is restricted.

  On the other hand, when the locking portion 75 is moved to the allowable position (the released position of the driven member 7) by moving the outer tube T1, as shown in FIG. 6, the locking portion 75 and the rotation restricting member 6 Engagement is released. Thereby, the rotation restricting member 6 can be rotated in the second direction D2, and the rotation of the rotation axis Ax1 in the second direction D2 is permitted. When the rotation axis Ax1 can be rotated in the second direction D2, the elevating member W can be moved in the upward direction, and while the outer tube T1 is operated, the elevating member W is lifted. When the operation of the outer tube T1 is released and the driven member 7 returns to the release position, the rotation of the rotation restricting member 6 in the second direction D2 is restricted by the locking portion 75 as shown in FIGS. 3 and 5. The rotation of the rotation axis Ax1 connected to the rotation restricting member 6 is restricted, and the raising operation of the raising and lowering member W is stopped halfway.

  As shown in FIG. 2, the locking portion 75 suppresses rotation of the rotation restricting member 6 in a direction (second direction D2) of rotation by a rotation shaft urging member S6 described later, and the extension of the long member 2 And the movement mechanism MM that allows rotation of the rotation restricting member 6 in the direction of rotation (first direction D1). The movement mechanism MM has a protruding position where the locking portion 75 protrudes from the driven member main body 74 toward the tooth portion 62 of the rotation limiting member 6 (see the solid line in FIG. It is configured to be movable between a retracted position (refer to a two-dot chain line in FIG. 5) which retracts to a position not engaged with the tooth portion 62. For example, in the present embodiment, the locking portion 75 is a latch member as shown in FIG. 2 and FIG. 5, and the locking portion 75 is directed to a projecting position to form an elastic member S5 such as a torsion spring (FIG. 2). (Refer to).

  The locking portion 75 has the moving mechanism MM, so that the locking portion 75 and the rotation restricting member 6 are engaged, and the rotation restricting member 6 is moved in the second direction D2 by the urging force of the rotation shaft urging member S6. Rotation is suppressed. Therefore, the rotary shaft urging member S6 is maintained in a state where the urging force is accumulated, and when the outer tube T1 is not operated, the rotation restricting member 6 is rotated in the second direction D2 and the operation target of the drive device 1 is Movement is suppressed. Further, by having the moving mechanism MM, the first direction of the rotation restricting member 6 due to the rotation of the drum 3 in the first direction D1 even when the driven member 7 is positioned at the engagement position when operating the long member 2 Allow rotation to D1. That is, the locking portion 75 in the projecting position to engage with the tooth portion 62 of the rotation restricting member 6 is shown by the two-dot chain line in FIG. 5 when the rotation restricting member 6 is rotated in the first direction D1. It can move to the retracted position and does not prevent the rotation of the rotation restricting member 6 in the first direction D1. Therefore, the rotation force of the rotation shaft Ax1 is suppressed by the biasing force of the rotation shaft biasing member S6 when the outer tube T1 is not operated, and the rotation shaft bias used to rotate the rotation shaft Ax1 when the outer tube T1 is operated. The state where the biasing force of the member S6 is accumulated can be maintained. Furthermore, at the time of operation by the elongated member 2, the rotation axis Ax1 can be rotated in the first direction D1 while maintaining the biasing force of the rotation shaft biasing member S6.

  In the movement mechanism MM, when rotational force in the second direction D2 is applied to the rotation restricting member 6, the locking portion 75 engages with the rotation restricting member 6 to suppress the rotation of the rotation restricting member 6, thereby restricting the rotation. The structure is not particularly limited as long as the rotation restricting member 6 can be rotated when rotational force in the first direction D1 is applied to the member 6. In the present embodiment, the moving mechanism MM projects the protruding position where it engages with the tooth portion 62 of the rotation restricting member 6, the claw portion 75b movable to the retracted position where it does not engage with the tooth portion 62, and the claw portion 75b. An elastic member S5 biased toward the position and an abutting portion 74b abutting on the claw portion 75b biased by the elastic member S5 are provided. In the present embodiment, the locking portion 75 is rotatably attached to the driven member main body 74 about an axis extending in parallel with the rotation axis (hereinafter referred to as an axis X; see FIG. 2) of the rotation restricting member 6 There is. As shown in FIG. 2, FIG. 3 and FIG. 5, the locking portion 75 extends from the shaft portion 75a provided with a shaft and from the shaft portion 75a toward the tooth portion 62 of the rotation restricting member 6, and the tip is rotated. The claw portion 75 b is engaged with the tooth portion 62 of the regulating member 6. In the present embodiment, when the claws 75b biased by the elastic member S5 abut on the abutting portions 74b (see FIG. 5) provided on the driven member main body 74, the locking portions 75 are held at the projecting position. Ru. The position at which the elastic member S5 is provided is not particularly limited as long as the elastic member S5 can be biased so that the claw portion 75b of the locking portion 75 is located at the projecting position. In addition, the locking portion 75 is not limited to one that rotates around the shaft portion 75a, and may linearly reciprocate between the protruding position and the retracted position.

  As described above, the driving device 1 biases the drum 3 to which the one end of the elongated member 2 is connected and the drum 3 in the direction to wind and rotate the elongated member 2 as shown in FIG. 2. The drum biasing member S1, the rotating member 4 that rotates in the same direction as the drum 3 rotates, the load member 5 that applies a load to the rotation of the rotating member 4, and the disengaging that can disengage from the rotating member 4 It includes a rotation restricting member 6 provided with a portion 61, and a rotating member urging member S2 for urging the rotating member 4 to the drum 3 side.

  Although the details will be described later, the drum 3 is rotated in the first direction D1 by operating the long member 2. When the drum 3 rotates in the first direction D1, the rotating member 4 is separated from the drum 3 in the direction of the axis X, and the rotating member 4 rotates in the same direction as the drum 3 (first direction D1). By separating from the drum 3, the rotating member 4 engages with the rotation restricting member 6 to rotate the rotation restricting member 6 in the same direction as the rotating member 4 (first direction D <b> 1). When the rotation restricting member 6 is rotated in the first direction D1, the rotation axis Ax1 is rotated in the first direction D1 via the meshing portion G1, and the elevating member W is lowered via the transmission mechanism M2 and the operation member M1.

  The drum 3 is connected to one end 2 a of the elongated member 2, and is rotated in the first direction D <b> 1 by pulling the elongated member 2. When the long member 2 is pulled, the long member 2 wound around the drum 3 is unwound from the drum 3. When the operation of the long member 2 is released, the drum 3 is rotated in the direction opposite to the first direction D1 by the drum biasing member S1, and the long member 2 is wound around the drum 3.

  The drum 3 is provided rotatably with respect to the case C. The drum 3 is provided to rotate around a drive shaft Ax2 provided on the case C, as shown in FIGS. 2 and 3. In the present embodiment, as shown in FIG. 2 and FIG. 3, the drum 3 is provided on the outer periphery of the drum 3 with a winding groove 31 around which the long member 2 is wound, and a drum biasing member S1. And a housing portion 32 for housing.

  The drum biasing member S <b> 1 biases the drum 3 in the direction in which the drum 3 winds the long member 2. When the drum 3 is rotated in the first direction D1 so that the elongated member 2 is pulled and the elongated member 2 is fed out from the drum 3, the drum biasing member S1 is accumulated in the drum biasing member S1. Ru. When the operation of the long member 2 is released, the accumulated biasing force of the drum biasing member S1 causes the drum 3 to rotate in the direction in which the long member 2 is wound, and the long member 2 returns to the initial position.

  The structure of the drum biasing member S1 is not particularly limited as long as the drum 3 can be biased so as to rotate the drum 3 in the winding direction of the long member 2. In the present embodiment, as shown in FIGS. 2 and 3, the drum biasing member S1 is a spiral spring. The drum biasing member S1 which is a spiral spring is housed in a housing portion 32 as a recess provided on one end face of the drum 3, one end is attached to the drive shaft Ax2, and the other end is attached to the drum 3. . The drum biasing member S1 may be another biasing member such as a spring as long as the drum 3 can be biased so as to rotate in the direction in which the long member 2 is wound.

  The rotating member 4 is configured to rotate in the same direction (first direction D1) as the drum 3 in response to the rotation of the drum 3. In the present embodiment, as shown in FIG. 2, the rotating member 4 is disposed coaxially with the drum 3 and rotatably provided around the drive axis Ax2. The rotating member 4 is rotatable relative to the drum 3 at a predetermined angle as described later, and is configured to rotate together with the drum 3 after relative rotation at a predetermined angle.

  The rotating member 4 is attached to the drum 3 so as to be close to and away from the drum 3 in the axial X direction. The rotating member 4 is biased toward the drum 3 by a rotating member biasing member S2, as shown in FIG. In an initial state in which the long member 2 is not operated, the rotating member 4 is positioned close to the drum 3 in the direction of the axis X by the biasing force of the rotating member biasing member S2 (see FIG. 7) ). As shown in FIGS. 7 to 10, the rotating member 4 is rotated relative to the rotating member 4 by the spacing mechanism S and the loose fitting mechanism L described later, and the rotation member biasing member S2 is attached. It moves so as to be separated from the drum 3 in the axial direction X against the force. When the rotating member 4 moves so as to be separated from the drum 3 in the axial X direction, the rotating member 4 rotates with the drum 3 and engages with the rotation restricting member 6 to rotate the rotation restricting member 6 in the same direction as the rotating member 4 Rotate to. The relative rotation between the drum 3 and the rotating member 4 is not only that the rotating member 4 rotates at a lower speed than the rotating speed of the drum 3 when the drum 3 rotates, but the rotating member 4 does not rotate. The case where only the drum 3 rotates is included.

  The rotation member 4 is not limited to the illustrated structure, but in the present embodiment, the rotation member 4 is a gear having a tooth portion 41 on the outer periphery, and as described later, a projection PR (see FIG. 2) projecting from an end face on the drum 3 side In the end face on the rotation restricting member 6 side, the rotating member side engagement / disengagement portion 42 (see FIGS. 7 to 10) is provided.

  In the present embodiment, as shown in FIG. 2, the rotating member biasing member S <b> 2 is provided between the end face of the rotation restricting member 6 facing each other and the end face of the rotating member 4. The position where the rotary member biasing member S2 is installed is not particularly limited as long as it can bias the rotary member 4 to the drum 3 side. For example, the rotary member biasing member S2 may be provided between the end face of the rotary member 4 facing each other and the end face of the drum 3 to bias the rotary member 4 to the drum 3 side. It may be provided at a position. In the present embodiment, a coil spring is used as the rotating member biasing member S2, but the structure of the rotating member biasing member S2 is not particularly limited.

  The load member 5 is a member that applies a load that suppresses the rotation in the rotation direction with respect to the rotation direction of the rotation member 4. The load member 5 applies a load to the rotating member 4 to prevent the rotating member 4 from rotating at the same speed as the drum 3 when the drum 3 starts to rotate. The load member 5 may be a member that gives the rotation member 4 an action to increase the driving force necessary to rotate the rotation of the rotation member 4, and the direction opposite to the rotation direction of the rotation member 4 may be It may be a member that gives the force of

  The load member 5 is connected to the rotating member 4 directly or indirectly. In the present embodiment, as shown in FIG. 2, the load member 5 is connected to the rotary member 4 via the load gear G2 meshing with the tooth portion 41 of the rotary member 4. The structure of the load member 5 is not particularly limited as long as it can apply a load to the movement of the rotary member 4 in the rotational direction. In the present embodiment, the load member 5 is a rotary damper that applies a braking force to the rotation, and applies a braking force to the rotation of the load gear G2 to load in a direction opposite to the rotation direction of the rotating member 4 Is added. The tooth portion of the load gear G2 is, as shown in FIGS. 2 and 7 to 10, the movement range of the rotary member 4 in the axial X direction in consideration of the movement of the rotary member 4 in the axial X direction. , And has a length in the direction of the axis X capable of meshing with the teeth 41 of the rotating member 4.

  Between the rotating member 4 and the drum 3, as shown in FIGS. 7 to 10, a separating mechanism S for separating the rotating member 4 from the drum 3 in the axial X direction, the rotating member 4 and the drum 3 A loose fitting mechanism L is provided which can shift between the engaged state and the relative movement permitted state.

  The separating mechanism S separates the rotating member 4 from the drum 3 in the axial X direction in order to engage the rotating member 4 with the rotation restricting member 6. In the separating mechanism S, as shown in FIGS. 7 to 10, a guiding portion Sa for guiding the rotating member 4 in a direction relatively away from the drum 3 in the axis X direction, and a guiding portion Sa are connected to be relative to each other. A moving connection Sb is provided.

  The guiding portion Sa is connected to the connecting portion Sb when the drum 3 rotates in the first direction D1, and the force acting between the guiding portion Sa and the connecting portion Sb when the drum 3 rotates in the first direction D1. The rotation member 4 is converted into a force for separating the rotation member 4 from the drum 3 in the direction of the axis X to separate the rotation member 4 from the drum 3. As shown in FIGS. 7 to 10, after the drum 3 is rotated and the connection portion Sb contacts and is connected to the guide portion Sa, while the connection portion Sb is guided along the guide portion Sa, the drum 3 and The rotation member 4 rotates relative to the rotation member 4 to separate the rotation member 4 from the drum 3.

  In the present embodiment, the guide portion Sa of the separating mechanism S is provided on the rotating member 4. Specifically, the guide portion Sa is provided on a protrusion PR that protrudes toward the drum 3. The guiding portion Sa may be provided on the drum 3. For example, a protrusion having a guide portion may be provided which protrudes from the drum 3 toward the rotating member 4. In the present embodiment, as shown in FIGS. 7 to 10, the protrusion PR has an axial protrusion PR1 having a guide portion Sa, and a fitting protrusion PR2 that fits into a loose fitting mechanism opening described later. have. The axial projection PR1 and the fitting projection PR2 are integrally provided adjacent to each other in the circumferential direction of the rotary member 4 in the present embodiment, but are separately provided in the circumferential direction. It may be

  In the present embodiment, the guide portion Sa of the separation mechanism S is the inclined surface Sa1 of the axial direction protrusion PR1. In the inclined surface Sa1 of the axial direction protrusion PR1, for example, when the drum 3 rotates relative to the rotating member 4 as the drum 3 rotates faster than the rotating member 4, the connection portion Sb is inclined. The rotating member 4 may be inclined so as to be separated from the drum 3 in the axial X direction by being guided to Sa1. In the present embodiment, the inclined surface Sa1 provided on the axial direction protrusion PR1 protruding from the rotating member 4 is the rotational direction of the drum 3 and the rotating member 4 rotated in the first direction D1 by the operation of the long member 2 As it progresses to one direction D1), the height from the end face of the rotation member 4 (the distance from the end face in the direction of the axis X) is inclined to be higher (see FIG. 2). When the guiding portion (inclined surface) is provided on the drum 3 side, for example, as the inclined surface is moved to the opposite side to the rotating direction of the drum 3 and the rotating member 4 rotated by the operation of the long member 2, the drum It may be inclined so that the height from the end face of 3 (the distance from the end face in the direction of the axis X) is high.

  The height of the guide portion Sa in the direction of the axis X may be configured so as to realize movement in the direction of the axis X in which the rotation member 4 and the rotation restricting member 6 can be engaged.

  The connection portion Sb is connected in contact with the guide portion Sa, and when the drum 3 rotates in the first direction D1, the connection portion Sb relatively moves along the guide portion Sa, whereby the rotary member 4 is pivoted from the drum 3 The rotating member 4 is moved closer to the rotation restricting member 6 by separating in the X direction. Thereby, the rotation member 4 engages with the rotation restriction member 6 to transmit the rotation of the rotation member 4 to the rotation restriction member 6.

  The connection portion Sb is provided on the drum 3 when the guide portion Sa is provided on the rotary member 4 and is provided on the rotary member 4 when the guide portion Sa is provided on the drum 3. In the present embodiment, the connection portion Sb is provided on the drum 3. In the present embodiment, as shown in FIGS. 7 to 10, the connection portion Sb connected to the guide portion Sa is the edge 33a of the opening 33 into which the axial direction protrusion PR1 is inserted. When the connecting portion is provided on the rotating member 4 side, the connecting portion can be an edge portion of the opening provided in the rotating member 4 into which the axial direction protrusion PR1 protruding from the drum 3 is inserted. . The structure of the connection portion Sb is not particularly limited as long as the connection portion Sb can relatively move along the guide portion Sa by the rotation of the drum 3 in the first direction D1 in contact with the guide portion Sa. For example, the end faces of the drum 3 and the rotating member 4 facing each other are provided with protrusions engaged in the circumferential direction, and one of the protrusions is provided with the guiding part Sa, and the other protrusion is connected with the connecting part Sb. May be provided.

  The loose fitting mechanism L is a mechanism that allows the drum 3 and the rotating member 4 to be transitioned between the engaged state and the relative movement permitted state. The relative movement permission state is a state in which the drum 3 and the rotating member 4 rotate relative to each other due to the difference in rotational speed between the drum 3 and the rotating member 4 as shown in FIGS. 7 and 8. . Further, as shown in FIGS. 8 and 9, in the engaged state, the relative rotation between the drum 3 and the rotating member 4 is suppressed by the drum 3 and the rotating member 4 being engaged in the rotational direction. The drum 3 and the rotating member 4 interlock with each other and rotate in the same direction.

  In the loose fitting mechanism L, when the drum 3 and the rotating member 4 are in the relative movement permission state, the connecting portion Sb is guided by the separating mechanism S to the guide portion Sa as shown in FIGS. 7 and 8. When the rotating member 4 is separated from the drum 3 in the axis X direction by the separating mechanism S and the rotating member 4 engages with the rotation restricting member 6, the drum 3 and the rotating member 4 in the loose fitting mechanism L Is engaged. Thus, the rotation restricting member 6 engaged with the rotating member 4 can rotate in the first direction D1 in conjunction with the rotation of the drum 3. In the present embodiment, by rotating the rotation restricting member 6, the operation of the elevating member W is performed via the meshing portion G1, the rotation axis Ax1, the elevating mechanism M, and the like.

  In the present embodiment, the loose fitting mechanism L has a fitting protrusion PR2 that protrudes in the direction of the axis X, and a loose fitting mechanism opening that accommodates the fitting protrusion PR2 in the space. In the present embodiment, the loose fitting mechanism opening is integrally formed with the opening 33 into which the axial direction protrusion PR1 is inserted.

  As shown in FIGS. 7 and 8, the fitting projection PR2 is provided in the opening of the loose fitting mechanism so that the rotary member 4 and the drum 3 can be relatively rotated while the drum 3 is rotated at a predetermined rotation angle. It is a loose fit in the space of. Further, as shown in FIGS. 9 and 10, after the drum 3 rotates by a predetermined angle while the drum 3 and the rotating member 4 allow relative movement, the fitting protrusion PR2 is a loose fitting mechanism opening Engage in rotation with at least part of the When at least a part of the fitting projection PR2 and the loose fitting mechanism opening engages in the rotational direction, relative rotation between the drum 3 and the rotating member 4 is suppressed, and the drum 3 and the rotating member 4 interlock with each other It rotates together.

  In the present embodiment, the fitting protrusion PR2 and the inner wall in the loose fitting mechanism opening are in surface contact and engaged in the engaged state (see FIGS. 9 and 10). However, if the fitting projection PR2 and the engagement portion in the loose fitting mechanism opening are engaged so that relative rotation between the drum 3 and the rotating member 4 is suppressed and the interlocking rotation can be performed. Good.

  In the present embodiment, the fitting protrusion PR2 is provided on the rotating member 4 and the loose fitting mechanism opening is provided on the drum 3. The fitting projection PR2 may be provided on the drum 3 and the loose fitting mechanism opening may be provided on the rotating member 4. The shape of the fitting projection PR2 is not particularly limited as long as it can be engaged with at least a part of the loose fitting mechanism opening. In the present embodiment, the fitting protrusion PR2 is provided as a substantially rectangular plate-like protrusion as shown in FIG. Further, in the present embodiment, the fitting protrusion PR2 is provided on the protrusion PR integrally with the axial direction protrusion PR1. The protrusion PR is inserted so as to be accommodated in the opening 33 provided in the drum 3 by the rotary member 4 being pressed toward the drum 3 by the rotary member biasing member S2. In the present embodiment, as shown in FIG. 2, two axial direction protrusions PR <b> 1 and two fitting protrusions PR <b> 2 are provided separately in the circumferential direction. However, the number of the axial direction protrusions PR1 and the number of the fitting protrusions PR2 are not particularly limited, and may be one or more.

  The shape of the loose fitting mechanism opening is not particularly limited as long as the fitting protrusion PR2 can be accommodated and transition of the drum 3 and the rotating member 4 between the engaged state and the relative movement permitted state is enabled. . In the present embodiment, the loose fitting mechanism opening is formed as an opening 33 integrally with the spacing mechanism opening that accommodates the axial direction protrusion PR1. In the present embodiment, the opening 33 is an opening at the end surface of the drum 3 that is open to the rotating member 4 side. The opening 33 has a predetermined length and a predetermined axial depth in the circumferential direction of the drum 3. In the present embodiment, two openings 33 are provided at intervals in the circumferential direction. The number of openings 33 is not particularly limited, and may be one or more. Further, the loose fitting mechanism opening that accommodates the fitting protrusion PR2 in the space and the opening (the separating mechanism opening) into which the axial direction protrusion PR1 is inserted may be separately provided.

  The rotation restricting member 6 restricts the movement of the member to which the rotation restricting member 6 is connected in a predetermined direction in a state in which the rotation of the rotation restricting member 6 is restricted. In the present embodiment, as shown in FIG. 5, the rotation of the rotation restricting member 6 in the second direction D2 is restricted by the engagement of the tooth portion 62 of the rotation restricting member 6 and the locking portion 75. There is. In the present embodiment, as shown in FIGS. 2 and 5, the rotation restricting member 6 is a gear having a tooth portion 62 rotatably supported in the case C, and is coaxial with the drum 3 and the rotating member 4. Provided in In an initial state in which the outer tube T1 is not operated, the rotation restricting member 6 is disposed apart from the rotating member 4 in the axial X direction (see FIG. 7).

  In the present embodiment, as shown in FIG. 5, when the outer tube T1 is not operated, the locking portion 75 is at the restricting position for restricting the rotation of the rotation restricting member 6 and engages with the teeth 62 of the rotation restricting member 6. doing. Thereby, when the outer tube T1 is not operated, the rotation of the rotation restricting member 6 in the second direction D2 is restricted. In this case, the rotation of the rotation axis Ax1 or the like directly or indirectly connected to the rotation restricting member 6 is restricted, and the operation target of the drive device 1 is held in a predetermined state. In the present embodiment, by restraining the rotation of the rotation restricting member 6, the elevation member W to be operated by the drive device 1 is in a predetermined elevated state or when the long member 2 or the outer tube T1 is not operated. It is held down. Therefore, for example, as will be described later, rotation of the rotation axis Ax1 is suppressed by the urging force of the rotation shaft urging member S6 of the operation assisting mechanism 8 that generates the urging force for rotating the rotation axis Ax1.

  The rotation restricting member 6 rotates with the drum 3 and the rotating member 4 by circumferentially engaging the rotating member 4 moved in the axial direction X by the separating mechanism S. The rotation restricting member 6 has an engagement / disengagement portion 61 which can be disengaged from the rotation member 4. In the present embodiment, as shown in FIG. 2, the engagement / disengagement portion 61 is provided on the end face of the rotation restricting member 6 facing the rotating member 4. The engagement / disengagement portion 61 engages with the rotation member side engagement / disengagement portion 42 (see FIGS. 7 to 10) of the rotation member 4. In the present embodiment, the engagement / disengagement portion 61 is constituted by a plurality of projections spaced apart in the circumferential direction on the end face of the rotation restricting member 6 opposed to the rotating member 4. The engagement / disengagement portion 61 is engaged in particular when the rotation restricting member 6 and the rotating member 4 come close to each other, so long as the rotational force of the rotating member 4 can be transmitted to the rotation restricting member 6. It is not limited.

  In the present embodiment, the rotation restricting member 6 is connected to the meshing portion G1 via a shaft (not shown). In the present embodiment, the rotation restricting member 6 is connected to the transmission gear G12 as shown in FIGS. 2 and 5. When the rotation restricting member 6 rotates in the first direction D1 according to the rotation of the drum 3 in the first direction D1 by the operation of the long member 2, the transmission gear G12 rotates and the drive gear G11 meshing with the transmission gear G12 By rotating, the rotation axis Ax1 rotates in the first direction D1.

  As described above, in the present embodiment, the drive device 1 includes the long member 2, the drum 3, the drum biasing member S1, the rotating member 4, the load member 5, the rotation restricting member 6, and the rotating member A biasing member S2 is provided, and a separation mechanism S and a loose fitting mechanism L are provided between the rotating member 4 and the drum 3. In the present embodiment, as shown in FIG. 7 and FIG. 8, when the drum 3 is rotated in one direction (first direction D1) by the extension operation of the elongated member 2, the rotating member 4 has a free fitting mechanism L In the relative movement permission state, the guide portion Sa guides the connecting portion Sb in the direction of relatively separating from each other due to the difference in rotational speed in the rotation of the rotating member 4 and the drum 3 in one (first direction D1). As a result, the rotating member 4 moves in a direction away from the drum 3 side, the engagement / disengagement portion 61 engages with the rotating member 4, and the loose fitting mechanism L is engaged, so that Relative rotation is suppressed. Therefore, when the elongated member 2 is operated, the drum 3 is rotated, and the rotating member 4 and the rotation restricting member 6 are rotated in the first direction D1, and the driving force is transmitted by the rotational force transmitted from the rotation restricting member 6 The operation of 1 operation target becomes possible.

  Further, when the feeding operation of the long member 2 is released, the rotary member 4 is moved to the drum 3 side by the biasing of the rotary member biasing member S2, and the engagement with the engagement / disengagement portion 61 of the rotation regulating member 6 is performed. The engagement is released, and the drum 3 is rotated to the other side by the biasing force of the drum biasing member S1, and the drum 3 is rotated together with the rotating member 4 to wind the long member 2. Thus, when operating the long member 2 when operating the operation target of the drive device 1, when the operation is released, the biasing force of the drum biasing member S 1 causes the drum 3 to operate when the long member 2 is operated. By rotating in the reverse direction, the elongated member 2 returns to its original position. On the other hand, when the operation of the elongated member 2 is released, as shown in FIGS. 7 and 8, the rotation restricting member 6 and the rotating member 4 directly or indirectly connected to the operation target of the drive device 1. Because the separation mechanism S separates the rotational force, the rotational force is not transmitted between the rotation restricting member 6 and the rotating member 4. Therefore, even if the drum 3 rotates when winding the long member 2, the rotation of the drum 3 is not transmitted to the rotation restricting member 6 side, so that after the operation target of the drive device 1 is operated by the long member 2 Is held in place. Therefore, when moving from the initial position of the operation target to the operation end position, the operation of the long member 2 can be divided into plural times, and when the operation of the long member 2 is started a plurality of times, the long The scale member 2 returns to the initial position every time. Therefore, the operability is good, and the length of the pulling operation of the long member 2 may be short. Therefore, since it is not necessary to pull out the pulling operation of the long member 2 longer than when moving from the initial position of the operation target to the operation end position by one operation, for example, the long member 2 such as the operation portion P Since the part gripped at the time of the operation is close to the position before and after the operation, the pulling operation of the long member 2 is facilitated. Also, in the case of a large elevating member, a relatively large force is required when moving from the initial position to the operation end position, but the long member 2 is wound so as to It becomes possible to operate easily also at the time of raising and lowering of the large-sized raising / lowering member W by dividing and operating several times.

  Moreover, in this embodiment, the drive device 1 has the operation assistance mechanism 8 as FIG. 2 shows. The operation assisting mechanism 8 applies a force to rotate the rotation axis Ax1 in the second direction D2. In the present embodiment, the operation assisting mechanism 8 has a rotation shaft biasing member S6. A rotation shaft biasing member S6 for rotating the rotation shaft Ax1 in a direction (second direction D2) opposite to the direction of rotation by the extension of the long member 2 is directly or indirectly connected to the rotation shaft Ax1. .

  In the present embodiment, as shown in FIG. 2, the operation assisting mechanism 8 includes a first auxiliary gear 81 connected to the rotation axis Ax1, a second auxiliary gear 82 meshing with the first auxiliary gear 81, and a second auxiliary gear 82. And a rotary shaft biasing member S6 connected to the gear 82. By moving the outer tube T1, the rotation shaft biasing member S6 causes the rotation of the rotation shaft Ax1. Specifically, when the outer tube T1 is operated and the drive gear G1 is rotated in the second direction D2 by the drive engagement portion 73 provided in the driven member 7, as shown in FIG. 2, the drive tube G1 is connected to the drive gear G1. The rotation axis Ax1, the first auxiliary gear 81 and the second auxiliary gear 82 rotate slightly in the second direction D2. At this time, the first auxiliary gear 81 and the second auxiliary gear 81 are released by the urging force of the rotary shaft urging member S6 in which the self restraint between the first auxiliary gear 81 and the second auxiliary gear 82 is released and the urging force is accumulated. The auxiliary gear 82 continues to rotate in the second direction D2. As a result, the rotation axis Ax1 is rotated in the second direction D2, and the elevating member W is raised.

  On the other hand, when the elongated member 2 is operated, when the rotation axis Ax1 is rotated in the first direction D1 via the drum 3, the rotating member 4, the rotation restricting member 6 and the like, as shown in FIG. The gear 81 and the second auxiliary gear 82 rotate in the first direction D1, and a biasing force is accumulated in the rotation shaft biasing member S6. This enables accumulation of biasing force for operation in the other direction of the operation target such as elevation of the elevation member W when the operation of the long member 2 is operated in one direction such as when the elevation member W is lowered. It becomes.

  Further, although the rotational axis Ax1 receives a force in the direction of rotation in the second direction D2 by the urging force accumulated in the rotational shaft urging member S6, in addition to the self restraint of the first auxiliary gear 81 and the second auxiliary gear 82. When the tooth portion 62 of the rotation restricting member 6 engages with the locking portion 75, the rotation axis Ax1 is held without rotating when the long member 2 or the outer tube T1 is not operated.

  The structure of the rotation shaft biasing member S6 is not particularly limited as long as it is possible to apply a biasing force for rotating the rotation axis Ax1 by operating the outer tube T1. In the present embodiment, as shown in FIG. 2, the rotary shaft biasing member S6 is a spiral spring (hereinafter also referred to as a spiral spring S6), but may be another spring. In the present embodiment, one end of the rotary shaft biasing member S6, which is a spiral spring, is attached to the case C (fourth case member C4), and the other end is attached to the second auxiliary gear 82.

  Next, the operation of the present embodiment will be described by taking the lifting member operating device A as an example. The following operation is merely an example, and the present invention is not limited by the following description.

<Climb operation of lifting member>
When raising / lowering the raising / lowering member W from the state which the raising / lowering member W descend | falled, outer tube T1 is operated. When the operation end T121 positioned on the other end T12 side of the outer tube T1 is pulled downward from the state shown in FIG. 3, the outer tube T1 slides inside the cylindrical member T2, and the outer tube The entire T1 slides downward. When the outer tube T1 slides downward, the driven member 7 connected at one end T11 of the outer tube T1 and the connection portion 72 moves along the driven member guiding portion Cg in the case C (see FIG. 6). In addition, the inner cable (it calls the inner cable 2 hereafter) which is the elongate member 2 penetrated by outer tube T1 does not move with the movement of outer tube T1, and the drum 3 does not rotate.

  When the driven member 7 is moved by the pulling operation of the outer tube T1, as shown in FIG. 6, the locking portion 75 provided on the driven member 7 controls the movement of the rotation restricting member 6 from the restricting position to restrict movement. It moves to the allowable position which permits the rotation of 6 and the rotation of the rotation restricting member 6 becomes possible. Further, as the driven member 7 moves, as shown in FIG. 6, the drive engagement portion 73 provided on the driven member 7 engages with the drive gear G11, and the drive gear G11 in the second direction D2. Rotate. When the drive gear G11 rotates, the rotation axis Ax1 connected to the drive gear G11, the first auxiliary gear 81, and the second auxiliary gear 82 slightly rotate in the second direction D2. At this time, self-restriction in the first auxiliary gear 81 and the second auxiliary gear 82 is released, and the rotation axis Ax1 continues to rotate in the second direction D2 by the biasing force of the spiral spring S6. When the rotation axis Ax1 rotates in the second direction D2, the elevating member W is raised via the transmission mechanism M2 and the actuating member M1.

  When the driven member 7 is moved downward as shown in FIG. 6 and the locking portion 75 and the tooth portion 62 of the rotation restricting member 6 are not engaged, the rotation axis Ax1 is attached to the spiral spring S6. While rotating by the force, the drive gear G11, the transmission gear G12, and the rotation restricting member 6 rotate in the second direction D2 as the rotation axis Ax1 rotates.

  When the operation of the outer tube T1 is released, the driven member 7 moves from the state shown in FIG. 6 to the initial position shown in FIG. 3 by the elastic member S3 provided on the driven member 7. When the driven member 7 returns to the initial position, the drive engagement portion 73 interferes with the teeth of the drive gear G11, but since the drive engagement portion 73 is rotatable around the shaft portion 73a (see FIG. 5), By rotating clockwise in FIG. 6 around the shaft 73a and moving to the retracted position, the drive gear G11 is overcome and returned to the initial position.

  When the driven member 7 is moved to the initial position shown in FIG. 3, the locking portion 75 engages with the tooth portion 62 of the rotation restricting member 6 to restrict the rotation of the rotation restricting member 6. Thereby, the rotation of the rotation axis Ax1 indirectly connected to the rotation restricting member 6 is also restricted. Therefore, the elevating member W is maintained in the predetermined rising state.

  While the outer tube T1 is being pulled, the elevating member W can rise to the rising state (the state in which the raising is completed) of the elevating member W by the biasing force of the spiral spring S6. When it is desired to stop the lifting and lowering member W in front of the rising state, when the operation of the outer tube T1 is released while the lifting and lowering member W is lifted, the locking portion 75 engages with the rotation regulating member 6 to move the lifting and lowering member W Stop on the way up.

<Descent operation of elevating member>
When the lifting member W is lowered from the state in which the lifting member W is lifted, the inner cable 2 is operated. When the operation part P located on the other end 2 b side of the inner cable 2 is pulled downward from the state shown in FIG. 3, the inner cable 2 slides inside the outer tube T 1, and from the drum 3 While being fed out, the drum 3 is rotated in the first direction D1. At this time, the biasing force of the drum biasing member S1 is accumulated.

  When the drum 3 rotates in the first direction D1, as shown in FIGS. 7 and 8, the drum 3 rotates relative to the rotating member 4 whose rotation is suppressed by the load member 5. At this time, the drum 3 rotates relative to the rotating member 4 while the edge 33 a of the opening 33 serving as the connecting portion Sb is guided by the inclined surface Sa1 of the protrusion PR protruding from the end face of the rotating member 4. The drum 3 is not moved in the direction of the axis X, and the rotary member 4 is provided movable in the direction of the axis X. When a force is applied to the inclined surface Sa1 from the edge 33a of the opening 33, the inclined surface Sa1 is A force in the direction of separating the rotating member 4 from the drum 3 in the direction of the axis X is generated on the rotating member 4. Therefore, the edge 33a of the opening 33 is guided by the inclined surface Sa1, and the rotatable member 4 movable in the axial X direction resists the biasing force of the rotatable member biasing member S2 while the drum 3 is rotated in the axial X direction. It moves toward the rotation restricting member 6 in the direction away from the end face. Thereby, as shown in FIG. 9, the rotating member 4 is moved to a position where the engagement / disengagement portion 61 of the rotation restricting member 6 and the rotation member side engagement / disengagement portion 42 of the rotation member 4 can be engaged. .

  When the drum 3 further rotates in the first direction D1, as shown in FIGS. 9 and 10, the axial projection PR1 of the projection PR engages with the wall in the opening 33 to rotate the drum 3 and the drum 3 Both the members 4 interlock with each other to be rotatable. When the drum 3 further rotates in the first direction D1, the drum 3 and the rotating member 4 interlock with each other in the engaged state to rotate in the first direction D1, and the rotation restricting member 6 engaged with the rotating member 4 is also the first Rotate in direction D1. At this time, the locking portion 75 is engaged with the tooth portion 62 of the rotation restricting member 6 as shown in FIG. 5, but the locking portion 75 is rotatable around the shaft portion 75a. As indicated by a two-dot chain line in FIG. 5, the portion 75a is rotated and moved to the retracted position. Thereby, the rotation of the rotation restricting member 6 is not disturbed.

  When the rotation restricting member 6 is rotated in the first direction D1, the transmission gear G12 and the drive gear G11 connected to the rotation restricting member 6 are rotated in the first direction D1, and the rotation axis Ax1 connected to the drive gear G11 is It rotates in the first direction D1. When the rotation axis Ax1 rotates in the first direction D1, the transmission mechanism M2 and the actuating member M1 operate in the opposite direction to the direction in which the elevating member W is lifted, and the elevating member W is lowered.

  When the rotation axis Ax1 rotates in the first direction D1, the first auxiliary gear 81 and the second auxiliary gear 82 connected to the rotation axis Ax1 rotate in the first direction D1, and the lifting member W is lifted. A force is accumulated in the spiral spring S6.

  When the pulling operation of the inner cable 2 is released, the drum 3 is rotated in the opposite direction to the pulling operation by the drum biasing member S1 in which the biasing force is accumulated when the drum 3 rotates in the first direction D1. The inner cable 2 is automatically returned to the initial position of the inner cable 2 by the drum 3 rotating in the opposite direction to the pulling operation. Further, in the present embodiment, the amount of pull operation by one operation of the inner cable 2 is a part of the amount of rotation of the rotary shaft Ax1 from the rising state (state in which the rising is completed) to the lowered state of the lifting member W. It corresponds. Therefore, the inner cable 2 is operated a plurality of times from the rising state of the raising and lowering member W (the state in which the rising is completed) to the lowered state. At that time, since the inner cable 2 and the operation portion P return to the initial position regardless of the raised state of the lifting member W, it is very easy to perform a plurality of operations. In addition, since the amount of pull operation for pulling the inner cable 2 is short, the inner cable 2 is not drawn long from the outer tube T1, and the operability is good.

1 Drive device 2 Long member (inner cable)
2a One end of the long member 2b The other end of the long member 3 drum 31 winding groove 32 housing portion 33 opening 33a edge 4 rotating member 41 tooth 42 rotating member side engaging and disengaging portion 5 load member 6 rotation restricting member 61 Engaging and disengaging part 62 tooth part 7 driven member 71 guiding projection 72 connecting part 73 driving engaging part 73a shaft part 73b claw part 74 driven member main body 74a abutting part 74b abutting part 75 locking part 75a shaft part 75b claw part 8 Auxiliary operation mechanism 81 First auxiliary gear 82 Second auxiliary gear A Lifting member operating device Ax1 Rotary shaft Ax2 Drive shaft C Case C1 First case member C2 Second case member C3 Third case member C4 Fourth case member Ca Attachment portion Cg Driven member guide part D1 first direction D2 second direction F base G1 meshing part G11 drive gear G12 transmission gear G2 load gear L loose fitting mechanism M elevator M1 actuating member M11 actuating arm M12 connecting portion M13 shaft portion M2 transmission mechanism M21 first transmission gear M22 second transmission gear MM moving mechanism P operation portion PR protrusion PR1 axial protrusion PR2 fitting protrusion S separation mechanism Sa guide portion Sa1 inclined surface Sb connection portion S1 drum biasing member S2 rotating member biasing member S3, S4, S5 elastic member S6 rotating shaft biasing member (spiral spring)
T1 outer tube T11 one end of outer tube T111 actuating end T12 other end of outer tube T121 operation end T2 cylindrical member T21 one end of cylindrical member T211 enlarged diameter end T22 other end of cylindrical member T221 protected end TM metal Member W Lifting member X axis

Claims (4)

An elongated member having flexibility;
A drum which is connected to one end of the long member to wind and take out the long member;
A drive shaft coaxial with the drum;
A drum biasing member for biasing the drum in a direction to wind and rotate the long member;
A rotating member that rotates in the same direction as the drum rotates;
A load member that applies a load to the rotation of the rotating member;
A rotation restricting member provided with an engagement / disengagement portion capable of engaging / disengaging with the rotation member;
And a rotating member biasing member for biasing the rotating member toward the drum side,
Between the rotating member and the drum, a separation mechanism for separating the rotating member axially with respect to the drum, and the rotating member and the drum being able to transition between an engaged state and a relative movement permitted state And a loose fit mechanism,
The separating mechanism is provided with a guide portion for guiding the rotating member in the direction relatively away from the drum in the axial direction, and a connecting portion for relative movement by connecting to the guide portion.
When the drum is rotated to one side by the feeding operation of the long member,
In the relative movement permission state of the loose fitting mechanism, the rotation member guides the guide portion in a direction to relatively separate the connection portion due to a difference in rotational speed in rotation to one of the rotation member and the drum. As a result, it moves in a direction away from the drum side, the engagement / disengagement portion engages with the rotating member, and the loose fitting mechanism is engaged, whereby the relative rotation of the drum is suppressed. And
When the feeding operation of the long member is released,
The rotary member is moved toward the drum by the biasing of the rotary member biasing member, and the engagement with the engagement / disengagement portion of the rotation regulating member is released, and the drum is attached to the drum biasing member. A driving device in which the drum is rotated to the other side by a force and the drum is rotated with the rotating member to wind the elongated member. The guide portion of the separating mechanism is an inclined surface of the axial projection,
The drive device according to claim 1, wherein the connection portion connected to the guide portion is an edge portion of an opening portion into which the axial direction protrusion is inserted. The drive device according to claim 1 or 2, wherein the loose fitting mechanism includes a fitting protrusion protruding in an axial direction, and a loose fitting mechanism opening that accommodates the fitting protrusion in a space. An outer tube covering an outer periphery of the elongated member is provided in the axial direction of the elongated member,
A locking portion is provided at an end portion of the outer tube and engaged with a tooth portion provided on the rotation restricting member,
The said locking portion is movable between a restricting position for restricting the rotation of the rotation restricting member and a permitted position for permitting the rotation of the rotation restricting member by operating the outer tube. The drive unit according to any one of the above.

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