JP6960426B2 - Rotation drive - Google Patents

Description

The present invention relates to a rotary drive device.

Since the drive device that rotates the operation target is easy to operate and has a small stroke amount, a flexible long member such as an endless cable is hung on the drive wheel and the wire pulley connected to the operation target. , A device for operating an operation target by rotating a wire pulley is used (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-245914

Since such an endless long member has an endless shape, the loop portion is likely to be caught. On the other hand, when the endless long member is not used, it is necessary to operate different long members when operating the operation target in one direction and when operating in the other direction.

An object of the present invention is to provide a rotary drive device capable of operating an operating shaft in one direction or another by operating an operating wire in one direction.

The rotation drive device of the present invention includes a rotation operation unit, a drive unit for driving the rotation operation unit, an operation wire for operating the drive unit, and an outer tube covering the outer periphery of the operation wire. In the device, the rotation operating unit has an operating shaft and an operating gear that rotates the operating shaft in one direction, and the driving unit has a driving gear that is rotated by driving the driving unit. The drive device is connected to an intermediate gear that is connected to the operating gear to rotate the operating shaft in the other direction, a transmission gear that transmits the rotation of the driving gear, and the operating gear by moving the transmission gear. The outer tube has a switching member for switching between a first connection state in which the operating shaft is rotated in one direction and a second connection state in which the operating shaft is rotated in the other direction by connecting with the intermediate gear. By connecting to a member and operating the outer tube, the operating shaft is rotated in one direction or the other direction.

According to the present invention, the operating shaft can be operated in one direction or the other direction by operating the operation wire in one direction.

It is a side view which shows the elevating member operation device provided with the rotation drive device of one Embodiment of this invention. It is an exploded perspective view of the rotary drive device shown in FIG. It is the schematic which shows the state which the winding member used for the rotary drive device of FIG. 2 and a rotary member are close to each other. FIG. 5 is a schematic view showing a state in which the winding member and the rotating member are slightly separated from each other by the separating mechanism from the state shown in FIG. From the state shown in FIG. 4, it is a schematic view which shows the state which the winding member and the rotating member are separated from each other by the separating mechanism, and the rotating member and the rotation transmission member are able to engage with each other. From the state shown in FIG. 5, it is a schematic view which shows the state which the rotating member and the rotation transmission member engaged with each other are rotating in conjunction with each other. FIG. 5 is a schematic view showing a first connection state in which a transmission gear is connected to an operating gear in the rotary drive device shown in FIG. FIG. 5 is a schematic view showing a second connection state in which the transmission gear is connected to the intermediate gear in the rotary drive device shown in FIG.

Hereinafter, the rotary drive device according to the embodiment of the present invention will be described with reference to the drawings. The following embodiments are merely examples, and the rotary drive device of the present invention is not limited to the following embodiments. Hereinafter, an example in which the rotary drive device is applied to the elevating member operating device will be described. However, the rotary drive device of the present invention may be applied to a device 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 provided with an elevating member W and a rotation 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 rotation driving device 1.

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

The elevating mechanism M elevates and elevates the elevating member W by the driving force generated by the rotation driving device 1. The elevating mechanism M converts the operating force output from the rotation drive device 1 into an elevating operation of the elevating member W to elevate the elevating member W. In the present embodiment, the elevating mechanism M transmits a rotational force from the rotation drive device 1 and elevates and elevates the elevating member W by the rotational force.

As shown in FIG. 1, the elevating mechanism M includes an elevating member W provided on the base F, an operating member M1 for moving the elevating member W to an initial position and an operation ending position, and a drive generated by a rotation driving device 1. It is provided with a transmission mechanism M2 that transmits a force to the operating member M1. In the present embodiment, as shown by a solid line in FIG. 1, the initial position of the elevating member W is from the inside to the outside of the base F through an opening extending in the vertical direction provided in the base F where the elevating member W is a housing. It is a position that extends horizontally to. The operation end position of the elevating member W is a position where the elevating member W reaches a predetermined position on the upper side of the substrate F, as shown by a two-dot chain line in FIG. The elevating member W moves to the operation end position and then moves to the initial position again, and moves up and down between the initial position which is the descent position and the operation end position which is the ascending position. The initial position and the operation end position of the elevating member W are appropriately changed according to the operating range and the operating method of the elevating member W.

The structure of the operating member M1 is not particularly limited as long as the elevating member W can be moved between the initial position and the operating end position by using the driving force transmitted by the transmission mechanism M2. In the present embodiment, as shown in FIG. 1, the operating member M1 operates with a connecting portion M12 connected to the base F and the elevating member W, and an operating arm M11 for moving the elevating member W connected to the connecting portion M12. It has a shaft portion M13 that serves as a rotation axis of the arm M11 and an elevating member W. In addition to the arm mechanism as described above, the operating member M1 may be configured to convert the rotational motion output by the transmission mechanism M2 into a linear motion to cause the elevating member W to linearly operate. The rotary motion output by M2 may be transmitted as a rotary motion around the rotation axis of the elevating member W. Further, when the operating force due to the linear motion is output from the transmission mechanism M2, the operating member M1 may transmit the operating force due to the linear motion from the transmission mechanism M2 as a linear motion or as a rotary motion. good.

The transmission mechanism M2 transmits the driving force generated by the rotation driving device 1 to the operating member M1. In the present embodiment, the transmission mechanism M2 transmits the rotational force generated by the rotation driving device 1 to the operating member M1. The rotation drive device 1 may output an operating force other than the rotational operation such as a linear operation. In that case, the transmission mechanism M2 may transmit an operating force other than the rotational operation to the operating member M1.

The structure of the transmission mechanism M2 is not particularly limited as long as the driving force generated by the rotation driving device 1 can be transmitted to the operating member M1. In the present embodiment, as shown in FIG. 1, the transmission mechanism M2 includes a first transmission gear M21 connected to the operating member M1 and a second transmission gear M22 that meshes with the first transmission gear M21. .. The second transmission gear M22 is directly or indirectly connected to an operating shaft 21 (see FIG. 1) provided on the rotation drive device 1 side. In the present embodiment, the first transmission gear M21 is connected to the connecting portion M12, and the rotation of the first transmission gear M21 causes the connected connecting portion M12 to operate, and the operating arm M11 to which the connecting portion M12 is connected is operated. 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 operating shaft 21 and rotates by the rotation of the operating shaft 21. In this embodiment, the first transmission gear M21 is a sector gear and the second transmission gear M22 is shown as 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 operating member M1 can be moved via the second transmission gear M22 and the first transmission gear M21 by the rotation of the operating shaft 21. Not done. 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 rotation drive device 1 is a device that drives an operation target such as an elevating member W. The target of operation by the rotation drive device 1 is the elevating member W in the present embodiment, but the operation target is not limited to the elevating member W.

As shown in FIG. 2, the rotation drive device 1 covers the rotation actuating unit 2, the drive unit 3 for driving the rotation actuating unit 2, the operation wire 4 for operating the drive unit 3, and the outer periphery of the operation wire 4. The outer tube 5 is provided. The rotation actuating portion 2 has an actuating shaft 21 and an actuating gear 22 for rotating the actuating shaft 21. The drive unit 3 has a drive gear 31 that is rotated by driving the drive unit 3. Further, as shown in FIG. 2, the rotation drive device 1 has an intermediate gear 6 connected to the operating gear 22 to rotate the operating shaft 21 in the other direction, and a transmission gear 7 for transmitting the rotation of the driving gear 31. Have. Further, the rotation drive device 1 rotates the operating shaft 21 in one direction by connecting with the operating gear 22 by moving the transmission gear 7, and the operating shaft 21 by connecting with the intermediate gear 6 in the other direction. It has a switching member 8 for switching to a second connection state which is rotated to. Although a shaft member is used for the operating shaft 21 in the embodiment shown in the figure, a geared cable or a torque cable is used as a rotating shaft instead of the shaft member, and the rotating shaft is used as a driving force transmitted by the transmission gear 7. It may be rotated by the operation target to operate the operation target.

The rotation drive device 1 of the present embodiment can rotate the operating shaft 21 as an output by operating the operating wire 4, and by operating the outer tube 5, the operating shaft 21 is rotated by operating the operating wire 4. Switch direction. The details will be described later, but the first connection state in which the transmission gear 7 and the operating gear 22 are connected by the switching member 8 operated by the outer tube 5, and the second connection state in which the transmission gear 7 and the intermediate gear 6 are connected. By switching the connection state of the transmission gear 7 with the connection state, the rotation direction of the operating shaft 21 can be switched. As a result, the rotary drive device 1 operates the operating object such as the elevating member W in two directions without separately providing an operating member for switching. The details of the operation of the rotary drive device 1 will be described later.

The operation wire 4 operates the drive unit 3 to operate the rotation actuating unit 2. The structure of the operation wire 4 is not particularly limited as long as the drive unit 3 can be operated. In this embodiment, the operation wire 4 is a flexible inner cable.

In the present embodiment, as shown in FIG. 2, the operation wire 4 is connected to the take-up member 32, and can be taken up by the take-up member 32 and unwound from the take-up member 32. By pulling the wire, the operating force is transmitted to the winding member 32. The operation wire 4 has one end (not shown) connected to the winding member 32 and the other end having the operation wire operation portion P, and the other end side having the operation wire operation portion P is the case C (not shown). In this embodiment, it is derived from the first case member C1 and the second case member C2) to the outside. When the operation wire operation unit P is operated and the operation wire 4 is pulled, the operation wire 4 is unwound from the take-up member 32, and the take-up member 32 is wound around a predetermined axis (hereinafter referred to as axis X). Rotate.

The outer tube 5 covers the outer circumference of the operation wire 4. The outer tube 5 is a tubular member having both ends open, and accommodates the operation wire 4 so that the operation wire 4 can move in the axial direction with respect to the outer tube 5. In the present embodiment, the outer tube 5 is operated to switch the rotation direction of the operating shaft 21. One end 5a of the outer tube 5 is connected to a switching member 8 (a driven member 81 described later) and is located inside the case C, and the other end 5b of the outer tube 5 is located outside the case C. On the other end 5b side of the outer tube 5, an outer tube operating portion P2 for operating the outer tube 5 is provided.

The drive unit 3 is operated by the operation wire 4 to generate a driving force capable of operating the rotation actuating unit 2. The drive unit 3 rotates the operating gear 22 by the rotational driving force of the drive gear 31 that is rotated by the operation of the operation wire 4. The structure of the drive unit 3 is not particularly limited as long as the operation gear 22 can be rotated by the rotational drive force of the drive gear 31 that is rotated by the operation of the operation wire 4. In the present embodiment, as shown in FIG. 2, the drive unit 3 includes a winding member 32 that winds up and unwinds the operation wire 4, and a transmission member 33 that transmits the rotational operation of the winding member 32 to the drive gear 31. It has.

The take-up member 32 is configured so that one end of the operation wire 4 is connected and the operation wire 4 is pulled to rotate. When the operation wire 4 is pulled, the take-up member 32 rotates in one direction, and the operation wire 4 wound around the take-up member 32 is unwound from the take-up member 32. In the present embodiment, the take-up member 32 is urged in the direction in which the operation wire 4 is taken up by the take-up member urging member S1.

The structure of the take-up member 32 is not particularly limited as long as it can be rotated by the operation of the operation wire 4 and the rotational operation can be transmitted to the drive gear 31. In the present embodiment, the winding member 32 is a drum rotatably provided with respect to the case C, and accommodates the winding groove 32a around which the operation wire 4 is wound and the winding member urging member S1. It has an accommodating portion 32b.

The take-up member urging member S1 urges the take-up member 32 in the direction in which the take-up member 32 winds the operation wire 4. In the take-up member urging member S1, when the operation wire 4 is pulled and the take-up member 32 rotates so that the operation wire 4 is unwound from the take-up member 32, the urging force is accumulated in the take-up member urging member S1. Will be done. When the operation of the operation wire 4 is released, the winding member 32 rotates in the direction of winding the operation wire 4 due to the urging force accumulated in the winding member urging member S1, and the operation wire 4 returns to the initial position.

The structure of the take-up member urging member S1 is not particularly limited as long as the take-up member 32 can be urged so that the take-up member 32 rotates in the direction in which the operation wire 4 is taken up. In the present embodiment, as shown in FIG. 2, the winding member urging member S1 is a spiral spring. The winding member urging member S1 which is a spiral spring is housed in the accommodating portion 32b as a recess provided on one end surface of the winding member 32, one end is attached to the case C side, and the other end is the winding member. It is attached to 32. The winding member urging member S1 may be another urging member such as a spring as long as the winding member 32 can be urged to rotate in the direction in which the operation wire 4 is wound.

The transmission member 33 transmits the rotational force of the take-up member 32, which is rotated by the operation of the operation wire 4, to the drive gear 31. The structure of the transmission member 33 is not particularly limited as long as the rotational force of the winding member 32 that rotates by the operation of the operation wire 4 can be transmitted to the drive gear 31. In the present embodiment, the transmission member 33 transmits a rotational force in one direction of the winding member 32 to the drive gear 31 when the operation wire 4 is pulled, and the operation to the operation wire 4 is released to release the operation wire. When 4 is wound around the winding member 32, the drive gear 31 is configured so that the rotational force in the other direction of the winding member 32 is not transmitted. Specifically, as shown in FIG. 2, the transmission member 33 includes a rotating member 331 that rotates in the same direction as the winding member 32 rotates, and a load member 332 that applies a load to the rotation of the rotating member 331. A rotation transmission member 333 provided with an engagement / disengagement portion 333a capable of engaging / disengaging with the rotation member 331, and a rotation member urging member S2 for urging the rotation member 331 toward the winding member 32 are provided.

Although the details will be described later, by operating the operation wire 4, the take-up member 32 rotates in the feeding direction of the operation wire 4. When the winding member 32 rotates in the feeding direction, the rotating member 331 is separated from the winding member 32 in the axis X (see FIG. 2) direction, and the rotating member 331 rotates in the same direction as the winding member 32. The rotating member 331 engages with the rotation transmitting member 333 by being separated from the winding member 32 in the axis X direction, and rotates the rotation transmitting member 333 in the same direction as the rotating member 331. When the rotation transmission member 333 rotates in the same direction as the rotation member 331, the rotation of the rotation transmission member 333 causes the drive gear 31 to rotate. On the other hand, when the operation of the operation wire 4 is released, the rotating member 331 moves to the winding member 32 side in the axis X direction, the engagement between the rotating member 331 and the rotation transmitting member 333 is released, and the winding member The rotation of the operation wire 4 of the 32 in the winding direction is not transmitted to the drive gear 31.

The rotating member 331 is configured to rotate in the same direction as the winding member 32 in accordance with the rotation of the winding member 32. In the present embodiment, as shown in FIG. 2, the rotating member 331 is arranged coaxially with the winding member 32 and is rotatably provided in the case C. As will be described later, the rotating member 331 can rotate relative to the winding member 32 at a predetermined angle, and after rotating relative to the winding member 32, the rotating member 331 is configured to rotate together with the winding member 32. ..

The rotating member 331 is attached so as to be close to and separated from the winding member 32 in the axis X direction. As shown in FIG. 2, the rotating member 331 is urged to the winding member 32 side by the rotating member urging member S2. The rotating member 331 is located at a close position close to the winding member 32 side in the axis X direction due to the urging force of the rotating member urging member S2 in the initial state in which the operating wire 4 is not operated (FIG. 3). reference). As shown in FIGS. 3 to 6, the rotating member 331 has a rotating member urging member S2 while the winding member 32 rotates relative to the rotating member 331 by the separation mechanism S and the loose fitting mechanism L described later. It moves so as to be separated from the winding member 32 in the axis X direction against the urging force of. When the rotating member 331 moves so as to be separated from the winding member 32 in the axis X direction, the rotating member 331 rotates together with the winding member 32 and engages with the rotation transmitting member 333 to rotate the rotation transmitting member 333. Rotate in the same direction as 331. The relative rotation between the winding member 32 and the rotating member 331 is not limited to the rotation member 331 rotating at a speed lower than the rotating speed of the winding member 32 when the winding member 32 rotates. The case where only the take-up member 32 rotates without rotating 331 is also included.

The rotating member 331 is not limited to the structure shown in the drawing, but in the present embodiment, the rotating member 331 is a gear having a tooth portion 331a on the outer periphery, and as will be described later, a protrusion PR protruding from the end surface on the winding member 32 side (FIG. 2). (See), and the end face on the rotation transmission member 333 side has a rotation member side engagement disengagement portion 331b (see FIGS. 3 to 6).

In the present embodiment, the rotating member urging member S2 is provided between the end faces of the rotation transmitting members 333 facing each other and the end faces of the rotating member 331, as shown in FIG. The position where the rotating member urging member S2 is installed is not particularly limited as long as the rotating member 331 can be urged to the winding member 32 side. For example, the rotating member urging member S2 may be provided between the end faces of the rotating members 331 facing each other and the end faces of the winding member 32 to urge the rotating member 331 toward the winding member 32. , It may be provided at other positions. In the present embodiment, the coil spring is used as the rotating member urging member S2, but the structure of the rotating member urging member S2 is not particularly limited.

The load member 332 is a member that applies a load that suppresses rotation in the rotation direction of the rotation member 331 with respect to the rotation direction. By applying a load to the rotating member 331, the load member 332 suppresses the rotating member 331 from rotating at the same speed as the winding member 32 when the winding member 32 starts to rotate. The load member 332 may be a member that gives the rotating member 331 an action of increasing the driving force required for rotation with respect to the rotation of the rotating member 331, and is in the direction opposite to the rotation direction of the rotating member 331. It may be a member that gives the force of.

The load member 332 is directly or indirectly connected to the rotating member 331. The structure of the load member 332 is not particularly limited as long as a load can be applied to the movement of the rotating member 331 in the rotation direction. In the present embodiment, as shown in FIG. 2, the load member 332 has a load gear 332a that meshes with the tooth portion 331a of the rotating member 331 and a load portion 332b that applies a load to the load gear 332a. In the present embodiment, the load unit 332b is a rotary damper that applies a braking force against the rotation of the load gear 332a, and by applying a braking force against the rotation of the load gear 332a, the load unit 332b is opposite to the rotation direction of the rotating member 331. A load is being applied in the direction. As shown in FIGS. 2 to 6, the tooth portion of the load gear 332a rotates in the movement range of the rotating member 331 in the axis X direction in consideration of the movement of the rotating member 331 in the axis X direction. It has a length in the axis X direction that can mesh with the tooth portion 331a of the member 331.

Between the rotating member 331 and the winding member 32, as shown in FIGS. 3 to 6, a separation mechanism S that separates the rotating member 331 from the winding member 32 in the axis X direction, and a rotating member 331. A loose fitting mechanism L is provided so that the winding member 32 and the winding member 32 can transition between the engaged state and the relative movement allowable state.

The separating mechanism S separates the rotating member 331 from the winding member 32 in the axis X direction in order to engage the rotating member 331 with the rotation transmitting member 333. As shown in FIGS. 3 to 6, the separating mechanism S is connected to a guide portion Sa that guides the rotating member 331 in a direction relatively separated from the winding member 32 in the axis X direction, and a guide portion Sa. A connecting portion Sb that moves relative to each other is provided.

The guide portion Sa is connected to the connecting portion Sb when the operation wire 4 of the winding member 32 is rotated in the feeding direction, and is between the guide portion Sa and the connecting portion Sb when the winding member 32 is rotated in the feeding direction. The acting force is converted into a force that causes the rotating member 331 to separate from the winding member 32 in the axial X direction to separate the rotating member 331 from the winding member 32. As shown in FIGS. 3 to 6, after the winding member 32 rotates and the connecting portion Sb contacts and connects to the guide portion Sa, the connecting portion Sb is guided along the guide portion Sa and wound. The take-up member 32 and the rotating member 331 rotate relative to each other to separate the rotating member 331 from the take-up member 32.

In the present embodiment, the guide portion Sa of the separation mechanism S is provided on the rotating member 331. Specifically, the guide portion Sa is provided on the protrusion PR that protrudes toward the winding member 32. The guide portion Sa may be provided on the winding member 32. For example, a protrusion having a guide portion may be provided so as to project from the winding member 32 toward the rotating member 331. In the present embodiment, the protrusions PR include an axial protrusion PR1 having a guide portion Sa and a fitting protrusion PR2 that fits into a free fitting mechanism opening, which will be described later, as shown in FIGS. 3 to 6. have. In the present embodiment, the axial protrusion PR1 and the fitting protrusion PR2 are provided adjacent to each other in the circumferential direction of the rotating member 331 and integrally provided, but are separately provided separately in the circumferential direction. You may be.

In the present embodiment, the guide portion Sa of the separation mechanism S is the inclined surface Sa1 of the axial protrusion PR1. The inclined surface Sa1 of the axial protrusion PR1 is, for example, a connecting portion when the winding member 32 rotates relative to the rotating member 331 due to the winding member 32 rotating relatively faster than the rotating member 331. By guiding Sb to the inclined surface Sa1, the rotating member 331 may be inclined so as to be separated from the winding member 32 in the axis X direction. In the present embodiment, the inclined surface Sa1 provided on the axial protrusion PR1 protruding from the rotating member 331 advances in the rotational direction of the winding member 32 and the rotating member 331 that rotate in the feeding direction by the operation of the operation wire 4. , The height of the rotating member 331 from the end face (distance from the end face in the axis X direction) is increased (see FIG. 2). When a guide portion (inclined surface) is provided on the winding member 32 side, for example, the inclined surface advances to the side opposite to the rotation direction of the winding member 32 and the rotating member 331 that are rotated by the operation of the operation wire 4. Therefore, the winding member 32 may be inclined so as to increase the height from the end face (distance from the end face in the axis X direction).

The height of the guide portion Sa in the axis X direction may be configured so that the rotation member 331 and the rotation transmission member 333 can be engaged with each other and can be moved in the axis X direction.

The connecting portion Sb is connected in contact with the guide portion Sa, and when the winding member 32 rotates in the feeding direction, the connecting portion Sb moves relative to the guide portion Sa, whereby the rotating member 331 is wound up by the winding member 32. The rotating member 331 is brought closer to the rotation transmitting member 333 by being separated from the shaft in the X direction. As a result, the rotating member 331 engages with the rotation transmitting member 333 and transmits the rotation of the rotating member 331 to the rotation transmitting member 333.

The connecting portion Sb is provided on the winding member 32 when the guide portion Sa is provided on the rotating member 331, and is provided on the rotating member 331 when the guide portion Sa is provided on the winding member 32. .. In the present embodiment, the connecting portion Sb is provided on the winding member 32. In the present embodiment, as shown in FIGS. 3 to 6, the connecting portion Sb connected to the guide portion Sa is the edge portion E of the opening 32c into which the axial protrusion PR1 is inserted. When the connecting portion is provided on the rotating member 331 side, the connecting portion shall be the edge of the opening provided in the rotating member 331 into which the axial protrusion PR1 protruding from the winding member 32 is inserted. Can be done. The structure of the connecting portion Sb is not particularly limited as long as the connecting portion Sb can move relative to the guide portion Sa by coming into contact with the guide portion Sa and rotating the winding member 32 in the feeding direction. For example, both end faces of the winding member 32 and the rotating member 331 facing each other are provided with protrusions that engage with each other in the circumferential direction, one of the protrusions is provided with a guide portion Sa, and the other protrusion is connected. A portion Sb may be provided.

The loose fitting mechanism L is a mechanism that enables the winding member 32 and the rotating member 331 to transition between the engaged state and the relative movement allowable state. In the relative movement allowable state, as shown in FIGS. 3 and 4, the winding member 32 and the rotating member 331 rotate relative to each other due to the difference in the rotation speed between the winding member 32 and the rotating member 331. It is in a state of doing. Further, as shown in FIGS. 5 and 6, the engaging state is such that the winding member 32 and the rotating member 331 are engaged in the rotational direction, so that the winding member 32 and the rotating member 331 are relative to each other. The rotation is suppressed, and the winding member 32 and the rotating member 331 are interlocked and rotate in the same direction.

In the loose fitting mechanism L, when the winding member 32 and the rotating member 331 are in the relative movement allowable state, the connecting portion Sb is guided to the guide portion Sa by the separating mechanism S as shown in FIGS. 3 and 4. .. When the rotating member 331 is separated from the winding member 32 in the axis X direction by the separating mechanism S and the rotating member 331 engages with the rotation transmitting member 333, the loose fitting mechanism L is separated from the winding member 32. The rotating member 331 is engaged with the rotating member 331. As a result, the rotation transmitting member 333 engaged with the rotating member 331 can rotate in the feeding direction in conjunction with the rotation of the winding member 32. In the present embodiment, by rotating the rotation transmission member 333, the drive gear 31 is rotated, the operating shaft 21 is rotated via the transmission gear 22 and the like, and the operation target such as the elevating member W and the like is operated. ..

In the present embodiment, the loose fitting mechanism L has a fitting protrusion PR2 protruding in the axis X direction and a free fitting mechanism opening for accommodating the fitting protrusion PR2 in the space. In the present embodiment, the free fitting mechanism opening is integrally formed with the opening 32c into which the axial protrusion PR1 is inserted.

As shown in FIGS. 3 and 4, the fitting protrusion PR2 is free so that the rotating member 331 and the winding member 32 can rotate relative to each other while the winding member 32 rotates at a predetermined rotation angle. It is in a loose fitting state in the space inside the fitting mechanism opening. Further, in the fitting protrusion PR2, after the winding member 32 and the rotating member 331 are in a relative movement allowable state and the winding member 32 is rotated by a predetermined angle, the fitting protrusion PR2 is free as shown in FIGS. 5 and 6. Engage with at least a portion of the fitting mechanism opening in the rotational direction. When at least a part of the fitting protrusion PR2 and the opening of the loose fitting mechanism engages in the rotational direction, the relative rotation between the winding member 32 and the rotating member 331 is suppressed, and the winding member 32 and the rotating member 331 Are linked and rotate together.

In the present embodiment, the fitting protrusion PR2 and the inner wall in the opening of the loose fitting mechanism are in surface contact with each other in an engaged state (see FIGS. 5 and 6). However, the fitting protrusion PR2 and the engaging portion in the opening of the loose fitting mechanism are engaged so that the relative rotation between the winding member 32 and the rotating member 331 is suppressed and the engaging portion can rotate in conjunction with each other. do it.

In the present embodiment, the fitting protrusion PR2 is provided on the rotating member 331, and the loose fitting mechanism opening is provided on the winding member 32. The fitting protrusion PR2 may be provided on the winding member 32, and the loose fitting mechanism opening may be provided on the rotating member 331. The shape of the fitting protrusion PR2 is not particularly limited as long as it can engage with at least a part of the opening of the loose fitting mechanism. In the present embodiment, the fitting protrusion PR2 is provided as a substantially rectangular plate-shaped protrusion as shown in FIG. Further, in the present embodiment, the fitting protrusion PR2 is provided on the protrusion PR integrally with the axial protrusion PR1. The protrusion PR is inserted so as to be accommodated in the opening 32c provided in the winding member 32 by pressing the rotating member 331 toward the winding member 32 side by the rotating member urging member S2. In this embodiment, two axial protrusions PR1 and two fitting protrusions PR2 are provided apart from each other in the circumferential direction, as shown in FIG. However, the number of the axial protrusion PR1 and the fitting protrusion PR2 is not particularly limited, and may be one or a plurality of each.

The shape of the opening of the loose fitting mechanism is particularly long as it is possible to accommodate the fitting protrusion PR2 and allow the winding member 32 and the rotating member 331 to transition between the engaged state and the relative movement allowable state. Not limited. In the present embodiment, the loose fitting mechanism opening is formed as an opening 32c integrally with the separation mechanism opening accommodating the axial protrusion PR1. In the present embodiment, the opening 32c is an opening that opens toward the rotating member 331 on the end surface of the winding member 32. The opening 32c has a predetermined length and a predetermined axial depth in the circumferential direction of the winding member 32. In this embodiment, two openings 32c are provided at intervals in the circumferential direction. The number of openings 32c is not particularly limited, and may be one or plural. Further, the free fitting mechanism opening for accommodating the fitting protrusion PR2 in the space and the opening for inserting the axial protrusion PR1 (separation mechanism opening) may be provided separately.

When the rotation transmission member 333 engages with the rotation member 331, the rotation transmission member 333 transmits the rotational force of the rotation member 331 to the drive gear 31 side. In the present embodiment, as shown in FIG. 2, the rotation transmission member 333 is rotatably supported in the case C and is provided coaxially with the winding member 32, the rotation member 331, and the drive gear 31. .. The rotation transmission member 333 is arranged apart from the rotation member 331 in the axis X direction in the initial state in which the operation wire 4 is not operated (see FIG. 3).

Further, the rotation transmission member 333 rotates together with the take-up member 32 and the rotation member 331 by engaging with the rotation member 331 moved in the axis X direction by the separation mechanism S in the circumferential direction. The rotation transmission member 333 has an engagement / disengagement portion 333a that can be disengaged from the rotation member 331. In the present embodiment, the engagement / disengagement portion 333a is provided on the end surface of the rotation transmission member 333 facing the rotation member 331, as shown in FIG. The engaging / disengaging portion 333a engages with the rotating member-side engaging / disengaging portion 331b (see FIGS. 3 to 6) of the rotating member 331. In the present embodiment, the engagement / disengagement portion 333a is composed of a plurality of protrusions arranged apart from each other in the circumferential direction on the end surface of the rotation transmission member 333 facing the rotation member 331. If the rotation transmission member 333 and the rotation member 331 can be engaged with each other when the rotation transmission member 333 and the rotation member 331 are close to each other and the rotational force of the rotation member 331 can be transmitted to the rotation transmission member 333, the structure of the engagement disengagement portion 333a is particularly high. Not limited.

In the present embodiment, the rotation transmission member 333 is connected to the drive gear 31 so that the drive gear 31 can be rotated together when the rotation transmission member 333 rotates. As a result, in the present embodiment, when the rotating member 331 and the rotation transmitting member 333 are engaged and rotated together, the drive gear 31 also rotates. Further, when the engagement between the rotation member 331 and the rotation transmission member 333 is released, the rotation is not transmitted to the drive gear 31, and the drive gear 31 does not rotate.

The drive gear 31 is rotated by driving the drive unit 3. The drive gear 31 is rotatably supported in the case C. In the present embodiment, as shown in FIGS. 2 and 7, the drive gear 31 is arranged coaxially with the rotation transmission member 333, engages with the rotation transmission member 333 in the direction around the axis X, and together with the rotation transmission member 333. It is configured to rotate. The drive gear 31 is directly or indirectly connected to the transmission gear 7 and is configured to be able to transmit a rotational force to the transmission gear 7. In the present embodiment, in the drive gear 31, the teeth of the drive gear 31 mesh with the teeth of the transmission gear 7 to directly transmit the rotational force of the drive gear 31.

The transmission gear 7 transmits the rotation of the drive gear 31 toward the rotation actuating portion 2. In the present embodiment, the transmission gear 7 has a first connection state connected to the operating gear 22 shown in FIG. 7 and a second connection connected to the intermediate gear 6 shown in FIG. 8 by the switching member 8. It is configured to move between states. In the present embodiment, the transmission gear 7 is one gear formed having a diameter smaller than that of the drive gear 31. However, the size and number of the transmission gears 7 are not particularly limited as long as the rotation of the drive gear 31 can be transmitted toward the rotation actuating portion 2.

The intermediate gear 6 is connected to the operating gear 22, and when the transmission gear 7 is in the second connected state (see FIG. 8) connected to the intermediate gear 6, the transmission gear 7 is rotated by the rotation of the drive gear 31. The rotational force is transmitted to the operating gear 22. In the first connection state (see FIG. 7) in which the transmission gear 7 is connected to the operating gear 22 and the rotation of the transmission gear 7 is transmitted to the operating gear 22 without going through the intermediate gear 6, the operating shaft 21 is the drive gear 31. , The transmission gear 7 and the actuating gear 22 rotate in one direction D1 by the rotational force transmitted. On the other hand, in the second connection state (see FIG. 8) in which the transmission gear 7 is connected to the intermediate gear 6 and the rotation of the transmission gear 7 is transmitted to the operating gear 22 via the intermediate gear 6, the operating shaft 21 is driven. It rotates via the gear 31, the transmission gear 7, the intermediate gear 6, and the operating gear 22, and the rotating direction of the operating shaft 21 is the other direction D2 opposite to the one direction D1. Although the operating shaft 21 is not shown in FIGS. 7 and 8, since the operating shaft 21 rotates in the same direction as the operating gear 22, the operating gear 22 when the operating shaft 21 rotates in one direction D1. The rotation in one direction is indicated by the same reference numeral D1, and the rotation of the operating gear 22 in the other direction when the operating shaft 21 rotates in the other direction D2 is indicated by the same reference numeral D2.

The rotation operating unit 2 is driven by the driving force of the driving unit 3 to operate the operating target. As shown in FIG. 2, the rotation actuating portion 2 has an actuating shaft 21 and an actuating gear 22 for rotating the actuating shaft 21 in one direction D1 or the other direction D2. In the present embodiment, the operating gear 22 is rotationally driven by the driving force of the driving unit 3 operated by the operating wire 4, and the operating shaft 21 is rotated in one direction D1 or the other direction D2 by the rotation of the operating gear 22. As a result, the rotation actuating unit 2 operates the actuating target such as the elevating member W.

The operating gear 22 is rotated by the driving force of the driving unit 3 to rotate the operating shaft 21. The operating gear 22 rotates by the rotational force of the transmission gear 7 that transmits the rotation of the drive gear 31, and rotates forward (one-way D1) according to the connection state (first connection state or second connection state) of the transmission gear 7. It is configured to rotate to (rotate to) or reverse (rotate to D2 in the other direction). The actuating gear 22 is directly or indirectly connected to the actuating shaft 21. In the present embodiment, when the operating gear 22 rotates in one direction D1, the operating shaft 21 is rotated in one direction D1 in the same direction. On the other hand, when the operating gear 22 rotates in the other direction D2, the operating shaft 21 is rotated in the other direction D2 which is the same direction. The operating gear 22 and the operating shaft 21 may be indirectly connected via other members and rotate in opposite directions. The operating gear 22 meshes with the intermediate gear 6 in this embodiment.

The operating shaft 21 rotates around a predetermined shaft to operate the operating target of the rotation driving device 1. The operation target of the operation shaft 21 is not particularly limited. In the present embodiment, the operation target is the elevating member W, and as described above, the elevating member W extends to the outside of the case C through the opening Ca provided in the case C, is connected to the elevating mechanism M, and is connected to the elevating mechanism M. To raise and lower. The operating shaft 21 is directly or indirectly connected to the operating gear 22 and is rotated by the rotation of the operating gear 22. In the present embodiment, the operating shaft 21 engages with the engaging hole 22a (see FIG. 7) provided in the center of the operating gear 22 and rotates in the same direction as the operating gear 22.

The switching member 8 moves the transmission gear 7 and has a first connection state in which the transmission gear 7 is connected to the operating gear 22 (see FIG. 7) and a second connection state in which the transmission gear 7 is connected to the intermediate gear 6 (FIG. 7). 8), and the connection state of the transmission gear 7 is switched. In the present embodiment, the outer tube 5 is connected to the switching member 8, and as shown in FIGS. 7 and 8, the operating shaft 21 is rotated in one direction D1 or the other direction D2 by operating the outer tube 5. That is, when the outer tube 5 is operated, the switching member 8 connected to the outer tube 5 operates, and the connection states of the transmission gear 7 are the first connection state (see FIG. 7) and the second connection state (FIG. 7). 8) can be switched between. As a result, as shown in FIG. 7, when the operation wire 4 is operated in the first connection state in which the transmission gear 7 and the operation gear 22 are connected, the drive gear 31 rotated by the drive unit 3 is rotated. , It is transmitted to the operating shaft 21 via the transmission gear 7 and the operating gear 22, and the operating shaft 21 rotates in one direction D1. On the other hand, as shown in FIG. 8, when the operation wire 4 is operated in the second connection state in which the transmission gear 7 and the intermediate gear 6 are connected, the rotation of the drive gear 31 rotated by the drive unit 3 is increased. It is transmitted to the operating shaft 21 via the transmission gear 7, the intermediate gear 6, and the operating gear 22, and the operating shaft 21 rotates in the other direction D2. In this way, by operating the outer tube 5 to switch the rotation direction of the operating shaft 21 to a desired rotation direction, and then operating the operation wire 4, it is possible to apply an operation in a desired direction to the operating target. Further, the outer tube 5 for switching the rotation direction of the operating shaft 21 is provided coaxially with the operating wire 4. Therefore, it is easier for the user to operate the two long members that perform different operations (the operation for switching the rotation direction and the operation for rotating the operating shaft 21), as compared with the case where the two long members are separately provided. The operated portion of the rotary drive device 1 can be made compact.

The structure of the switching member 8 is not particularly limited as long as the connection state of the transmission gear 7 can be switched between the first connection state and the second connection state described above. In the present embodiment, the switching member 8 has a cam portion 82 and a support portion 83 that supports the movement of the cam portion 82, as shown in FIGS. 2, 7, and 8. Further, in the present embodiment, the switching member 8 has a driven member 81 to which one end 5a of the outer tube 5 is connected.

By operating the outer tube 5, the cam portion 82 moves to the first position (see FIG. 7) in which the transmission gear 7 is in the first connected state and the second position (see FIG. 8) in which the transmission gear 7 is in the second connected state. And move. In the present embodiment, the cam portion 82 is configured to rotate around the axis of the drive gear 31, and holds the transmission gear 7 rotatably. When the cam portion 82 is located at the first position, the connection state of the transmission gear 7 becomes the first connection state in which the transmission gear 7 and the operating gear 22 are connected. On the other hand, when the cam portion 82 moves to the second position, the connection state of the transmission gear 7 becomes the second connection state in which the transmission gear 7 and the intermediate gear 6 are connected. In the present embodiment, the cam portion 82 is supported by the support portion 83 at each of the first position and the second position, and the transmission gear 7 is in a meshed state with the operating gear 22 or the intermediate gear 6 (first connected state or It is configured to maintain the second connection state).

The structure of the cam portion 82 is not particularly limited as long as the cam portion 82 can move to the first position or the second position and bring the transmission gear 7 into the first connection state or the second connection state. In the present embodiment, the cam portion 82 extends from the axial center of the drive gear 31 toward the radial outer side of the drive gear 31 beyond the outer circumference of the drive gear 31. In the present embodiment, the cam portion 82 has a shaft portion 821 which is a portion around the rotation shaft of the cam portion 82, and an extending portion 822 extending radially outward from the shaft portion 821. The transmission gear 7 is rotatably attached to a portion of the extending portion 822 that extends beyond the outer circumference of the drive gear 31. The extending portion 822 has a pair of side portions 822a and 822b extending at least beyond the rotation axis of the transmission gear 7 and extending radially outward from the shaft portion 821 side. Further, in the present embodiment, as shown in FIG. 2, the cam portion 82 has two plate-shaped cam members 82a and 82b that sandwich the drive gear 31 and the transmission gear 7 in the axial direction. In the present embodiment, the cam member 82 is urged by the cam member urging member S3 in the axial direction in the direction in which the support portion 83 is provided.

The support portion 83 supports that the cam portion 82 is located at the first position or the second position. In the present embodiment, the support portion 83 is a cam so that the first connection state or the second connection state of the transmission gear 7 is not released when the transmission gear 7 is in the first connection state or the second connection state. The movement of the cam portion 82 is restricted by supporting the portion 82. In the present embodiment, the support portion 83 corresponds to the first position of the cam portion 82 so that the cam portion 82 can be supported at each of the first position and the second position of the cam portion 82. It is configured to move between one support position (see FIG. 7) and a second support position (see FIG. 8) corresponding to the second position of the cam portion 82.

In the present embodiment, the support portion 83 is configured to be movable between the first support position and the second support position by operating the outer tube 5. In the present embodiment, the switching member 8 is provided with a locking portion 81a for locking the end portion (one end 5a) of the outer tube 5, and the switching member 8 operates via the locking portion 81a by operating the outer tube 5. Then, the support portion 83 moves to the first support position and the second support position. As a result, the support portion 83 supports the cam portion 82 at the first position and the second position, respectively. In this case, even if the transmission gear 7 is moved by the cam portion 82, the meshing state with the operating gear 22 or the intermediate gear 6 is released in each of the first connection state and the second connection state of the transmission gear 7. It is possible to maintain the transmission state of the rotational force from the drive gear 31 to the operating gear 22 without doing so.

The operation method of the support portion 83 is not particularly limited as long as the support portion 83 can be moved between the first support position and the second support position by operating the outer tube 5. In the present embodiment, the switching member 8 moves in the case C, has a driven member 81 having a locking portion 81a to which one end 5a of the outer tube 5 is locked, and the supporting portion 83 moves the driven member 81. Correspondingly, it is configured to rotate about an axis and move between the first and second support positions. The support portion 83 is configured to rotate around a rotation axis extending in a direction parallel to the rotation axis of the cam portion 82, and protrudes from the rotation shaft portion 83a and the rotation shaft portion 83a on the movement locus of the driven member 81. A contact body 83c that extends from the rotation shaft portion 83a with a predetermined length and comes into contact with the cam portion 82 is provided. On the other hand, the driven member 81 is configured to be movable in the case C (linearly movable in the present embodiment) by operating the outer tube 5, and has an engaging body 81b that engages with the protruding portion 83b. The driven member 81 has a first operating position (or retracted position; see FIG. 7) corresponding to the first supporting position of the supporting portion 83 and a second operating position (or advancing position) corresponding to the second supporting position of the supporting portion 83. . Move to and from (see Figure 8). In the present embodiment, the driven member 81 has a driven member urging member S4 and a known heart cam mechanism (not shown), and each operation of the outer tube 5 has a first operating position and a second operating position. It is configured to be able to reciprocate between and.

In the present embodiment, in the support portion 83, a load is applied to the cam portion 82 from the drive gear 31 to the transmission gear 7, and the cam portion 82 to which the transmission gear 7 is connected by the load applied to the transmission gear 7 is provided. It is located on the side of the direction in which it is going to rotate. In this case, when the drive gear 31 and the transmission gear 7 mesh with each other and the rotational force is transmitted, it is suppressed that the meshing state between the operating gear 22 and the transmission gear 7 is released. Further, the support portion 83 is located in a direction in which the cam portion 82 rotates with respect to the cam portion 82 due to the urging force of the cam member urging member S3.

In the present embodiment, the abutting body 83c of the support portion 83 has a pair of side portions LT1 and LT2 extending in a direction away from the rotation shaft portion 83a of the support portion 83, and the tip sides of the pair of side portions LT1 and LT2, respectively. It has a tip T that connects to each other. However, the shape of the contact body 83c is not particularly limited. In the present embodiment, the support portion 83 has a substantially rectangular shape in a cross section in a direction perpendicular to the rotation axis, and the tip portion T has a flat surface connecting the tip sides of a pair of side portions LT1 and LT2 substantially parallel to each other. Is forming. Further, the pair of side portions LT1 and LT2 also have a flat surface.

In the present embodiment, when the cam portion 82 at the first position shown in FIG. 7 is supported by the support portion 83, the tip portion T of the contact body 83c of the support portion 83 hits the side portion 822a of the cam portion 82. The cam portion 82 is held in contact with the cam portion 82 at the first position. At this time, due to the engagement between the drive gear 31 and the transmission gear 7, the force indicated by the arrow AR is applied from the cam portion 82 to the support portion 83. In the present embodiment, a line connecting the tip portion T in which the abutting body 83c of the support portion 83 abuts on the cam portion 82 and the rotation axis of the support portion 83 (the center of rotation in the rotation shaft portion 83a) (2 of FIG. 7-2). (See dotted line) extends from the cam portion 82 along the direction AR of the force applied to the support portion 83. Therefore, even if a force of the direction AR is applied from the cam portion 82 to the support portion 83, the support portion 83 is suppressed from rotating around the rotation axis, and the cam portion 82 can be easily held in the first position. Become.

Further, when the cam portion 82 moves to the second position, as shown in FIG. 8, the support portion 83 rotates around the rotation axis to support the cam portion 82 at the second support position. In this state, the support portion 83 is held in the second support position by the movement restricting portion 9. The movement restricting unit 9 is a portion that comes into contact with the support unit 83 when the support unit 83 moves from the first support position to the second support position to restrict the movement of the support unit 83. The structure of the movement restricting portion 9 is not particularly limited, but in the present embodiment, the movement restricting portion 9 is shown as a wall portion provided on the case C, and the side portion LT1 of the abutting body 83c of the support portion 83 is shown. It is configured to abut. Due to the engagement between the drive gear 31 and the transmission gear 7, the force indicated by the arrow AR2 is applied from the cam portion 82 to the support portion 83, but the movement of the cam portion 82 is due to the provision of the movement restricting portion 9. Is regulated, and the cam portion 82 can be held in the second position. The contact body 83c of the support portion 83 is for maintaining the contact portion with the cam portion 82 at the first position for maintaining the first connection state of the transmission gear 7 and the second connection state of the transmission gear 7. It has a contact portion with the cam portion 82 at the second position.

Next, the operation of the rotation drive device 1 of the present embodiment will be described. The following operation of the rotary drive device 1 is merely an example, and the rotary drive device of the present invention is not limited by the following description.

The state shown in FIG. 7 is the first connection state in which the transmission gear 7 is connected to the operating gear 22. In this first connection state, the cam portion 82 is located at the first position, and the support portion 83 is located at the first support position.

In FIG. 7, when the operation wire 4 is pulled, the winding member 32 is rotated clockwise by the operation wire 4. When the winding member 32 rotates, the rotating member 331 rotates in the same direction as the winding member 32, as shown in FIGS. 3 to 6. At the same time, the rotating member 331 moves toward the rotation transmitting member 333 by the separation mechanism S described above, and engages with the rotation transmitting member 333 in the axial direction. As a result, as shown in FIG. 7, the take-up member 32, the rotation member 331, the rotation transmission member 333, and the drive gear 31 connected to the rotation transmission member 333 are in the same direction (as shown in FIG. 7) by the pulling operation by the operation wire 4. In FIG. 7, it rotates clockwise).

When the drive gear 31 rotates, the transmission gear 7 that meshes with the drive gear 31 and the operating gear 22 connected to the operating gear 22 rotate, and the operating shaft 21 connected to the operating gear 22 rotates. As a result, the actuating object connected to the actuating shaft 21 is actuated.

In the first connection state of the transmission gear 7 described above, the cam portion 82 at the first position is supported by the support portion 83 at the first support position, the position of the transmission gear 7 is held, and the drive gear 31 and the cam portion 82 are held. The meshing state between the transmission gear 7 and the operating gear 22 and the meshing state between the transmission gear 7 and the operating gear 22 are ensured. When the rotational force is transmitted between the drive gear 31 and the transmission gear 7, a clockwise force indicated by an arrow AR is applied to the cam portion 82 from the drive gear 31. Further, a clockwise force is also applied to the cam portion 82 by the urging force of the cam member urging member S3.

In the present embodiment, as shown in FIG. 7, the support portion 83 supports the force for rotating the cam portion 82 to hold the cam portion 82 in the first position and connect the cam portion 82 to the cam portion 82. It is possible to maintain the meshed state of the transmitted transmission gear 7 with the drive gear 31 and the meshed state with the operating gear 22.

Next, when the operation target is operated in the direction opposite to the operation in FIG. 7, by operating the outer tube 5, the transmission gear 7 is switched to the second connection state in which the transmission gear 7 is connected to the intermediate gear 6.

Specifically, from the state shown in FIG. 7, the outer tube operating unit P2 shown in FIG. 2 is operated to pull the outer tube 5. When the outer tube 5 is pulled, the driven member 81 in which one end 5a of the outer tube 5 is locked at the locking portion 81a moves downward in FIG. 7. The driven member 81 held in the first operating position shown in FIG. 7 by the heart cam mechanism moves to the second operating position shown in FIG. 8 by the pulling operation of the outer tube 5. When the driven member 81 moves to the second operating position, the engaging body 81b of the driven member 81 engages with the protruding portion 83b of the supporting portion 83, and the supporting portion 83 is placed around the rotating shaft portion 83a in a counterclockwise direction in FIG. (See FIG. 8). When the support portion 83 rotates toward the second support position, the cam portion 82 urged by the cam member urging member S3 rotates clockwise in FIG. 7 in accordance with the rotation of the support portion 83, and the second Move to position (see FIG. 8). The support portion 83 that has moved to the second support position and the cam portion 82 are held at the positions shown in FIG. 8 when the support portion 83 comes into contact with the movement restricting portion 9 and stops.

When the cam portion 82 moves to the second position, the transmission gear 7 connected to the cam portion 82 is released from the meshing state with the operating gear 22 and meshes with the intermediate gear 6 as shown in FIG. As a result, the connection state of the transmission gear 7 is switched.

When the operation wire 4 is operated in the second connection state of FIG. 8, it is connected to the winding member 32, the rotation member 331, the rotation transmission member 333, and the rotation transmission member 333 as in the case of the first connection state. The drive gear 31 is rotated in the same direction (clockwise in FIG. 8).

When the drive gear 31 rotates, the transmission gear 7 that meshes with the drive gear 31, the intermediate gear 6 that meshes with the transmission gear 7, and the operating gear 22 rotate. In the first connected state of FIG. 7, the operating gear 22 rotates in one direction D1, but in the second connected state of FIG. 8, the rotational force is applied from the drive gear 31 to the operating gear 22 via the intermediate gear 6. Is transmitted, so that the operating gear 22 rotates in the other direction D2 in the direction opposite to the rotation direction in the first connected state. Therefore, the actuating object connected to the actuating shaft 21 can be actuated in the direction opposite to that in the first connected state.

1 Rotation drive device 2 Rotation operation part 21 Operation shaft 22 Operation gear 22a Engagement hole 3 Drive part 31 Drive gear 32 Winding member 32a Winding groove 32b Accommodating part 32c Opening 33 Transmission member 331 Rotating member 331a Tooth part 331b Rotating member Side engagement disengagement part 332 Load member 332a Load gear 332b Load part 333 Rotation transmission member 333a Engagement disengagement part 4 Operation wire 5 Outer tube 5a One end of outer tube 5b The other end of outer tube 6 Intermediate gear 7 Transmission gear 8 Switching member 81 Driven member 81a Locking part 81b Engagement body 82 Cam part 82a, 82b Plate-shaped cam member 821 Shaft part 822 Extension part 822a, 822b Side part 83 Support part 83a Rotating shaft part 83b Protruding part 83c Contact body 9 Movement control part A Elevating member operating device C case Ca opening C1 1st case member C2 2nd case member D1 one direction D2 other direction E opening edge F base L loose fitting mechanism LT1, LT2 side part M elevating mechanism M1 operating member M11 operation Arm M12 Connecting part M13 Shaft part M2 Transmission mechanism M21 First transmission gear M22 Second transmission gear P Operation wire operation part PR protrusion PR1 Axial protrusion PR2 Fitting protrusion P2 Outer tube operation part S Separation mechanism Sa Guide part Sa1 Inclined surface Sb Connection part S1 Winding member urging member S2 Rotating member urging member S3 Cam member urging member S4 Driven member urging member T Tip part W Lifting member X-axis

Claims (3)

A rotary drive device including a rotary actuating unit, a drive unit for driving the rotary actuator, an operation wire for operating the drive unit, and an outer tube covering the outer circumference of the operation wire.
The rotary actuating portion has an actuating shaft and an actuating gear that rotates the actuating shaft in one direction.
The drive unit has a drive gear that is rotated by driving the drive unit.
The rotary drive device includes an intermediate gear that is connected to the operating gear to rotate the operating shaft in another direction, a transmission gear that transmits the rotation of the driving gear, and the operating gear by moving the transmission gear. It has a switching member for switching between a first connection state in which the operating shaft is rotated in one direction by connection and a second connection state in which the operating shaft is rotated in another direction by connection with the intermediate gear.
The outer tube is connected to the switching member,
A rotary drive device that rotates the operating shaft in one direction or the other direction by operating the outer tube. The switching member is a cam portion and a cam portion that move to a first position in which the transmission gear is in the first connected state and a second position in which the transmission gear is in the second connected state by operating the outer tube. It has a support part that supports movement, and has a support part.
The rotary drive device according to claim 1, wherein the support portion supports the cam portion to be located at the first position or the second position. The rotary drive device according to claim 1 or 2, wherein the switching member is provided with a locking portion for locking the end portion of the outer tube.

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