JP7352481B2 - drive device - Google Patents

Description

The present invention relates to a drive device.

For example, Patent Document 1 discloses a drive device including an electromagnetic clutch mechanism. This drive device includes a housing, an armature rotatably supported with respect to the housing, a rotor and a coil arranged opposite to the armature and rotatably supported with respect to the housing, and an electromagnetic coil housed in the housing. It is equipped with a clutch mechanism.

The drive device of Patent Document 1 engages the armature and rotor in a frictional relationship so that power can be transmitted between the armature and the rotor by electromagnetic attractive force generated between the armature and the rotor when the coil is energized. I'm making it match.

Japanese Patent Application Publication No. 2007-46622

However, in the case of a drive device including an electromagnetic clutch mechanism as disclosed in Patent Document 1, when the electromagnetic clutch mechanism is operated, the coil needs to be energized, which increases power consumption when the drive device is driven. Furthermore, in the case of the drive device as disclosed in Patent Document 1, many parts such as the winding portion of the coil and the armature are made of metal materials, which increases the weight of the entire drive device.

An object of the present invention is to provide a drive device that does not consume much power and can be lightweight.

The driving device of the present invention includes a flexible elongated member, a winding member to which one end of the elongated member is connected and winding up and unwinding the elongated member, and a rotating member that rotates in a direction, and the winding member is moved in the axial direction of the winding member so as to be spaced apart from the winding member by rotating the winding member relative to the rotating member; a moving mechanism for rotating the winding member relative to the rotating member, a load member applying a load to the rotation of the rotating member, and an actuating member operated by the rotating member; The rotating member is movable in the axial direction between a proximal position in close proximity to the winding member and a spaced apart position in relation to the winding member; is actuated by the rotation of the rotating member when the load member is located at the separated position, and the load member has an engaging portion that engages with an outer periphery of the rotating member to suppress rotation of the rotating member, The engaging portion engages with the outer periphery of the rotating member when the rotating member is in the close position, and is out of engagement with the outer periphery of the rotating member when the rotating member is in the separated position. It is set up like this.

According to the drive device of the present invention, power consumption does not increase and weight reduction is possible.

FIG. 1 is a side view showing an elevating member operating device including a drive device according to an embodiment of the present invention. 2 is an exploded perspective view of the drive device shown in FIG. 1. FIG. FIG. 3 is a schematic diagram showing a state in which a winding member and a rotating member used in the drive device of FIG. 2 are close to each other. 4 is a schematic diagram showing a state in which the winding member and the rotating member are slightly separated from each other from the state shown in FIG. 3. FIG. 5 is a schematic diagram showing a state in which the winding member and the rotating member are separated from each other from the state shown in FIG. 4, and the rotating member and the operating member can engage with each other. FIG. FIG. 6 is a schematic diagram showing a state in which a rotating member and an actuating member that are engaged with each other are rotating in conjunction with each other from the state shown in FIG. 5 . FIG. 3 is a schematic diagram showing a first connected state in which a transmission gear is connected to an operating gear in the drive device shown in FIG. 2; FIG. 3 is a schematic diagram showing a second connected state in which a transmission gear is connected to an intermediate gear in the drive device shown in FIG. 2; FIG. 3 is a perspective view showing a state in which an engaging portion of a load member is engaged with a rotating member located in a proximate position. FIG. 6 is a perspective view showing a disengaged state in which the engaging portion of the load member is not engaged with the outer periphery of the rotating member at a separated position. FIG. 6 is a perspective view showing a state in which the engaging portion of the load member is swung by a rotating member located in a close position. It is a schematic diagram showing a modification of an engaging part of a load member. FIG. 7 is a schematic diagram showing another modification of the engaging portion of the load member.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A driving device according to an embodiment of the present invention will be described below with reference to the drawings. Note that the following embodiments are merely examples, and the drive device of the present invention is not limited to the following embodiments. Hereinafter, an example in which the drive device is applied to an 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 this embodiment, the elevating member operating device A includes an elevating mechanism M including an elevating member W, and a drive device 1 connected to the elevating mechanism M. The elevating member operating device A operates the elevating member W using the driving force generated by the drive device 1.

The elevating member W operated by the elevating member operating device A is a shielding pole in this embodiment, but the type of elevating member W is not particularly limited. For example, it may be another shielding body such as a protective fence or a protective rope. Good too. The elevating member W is configured to rotate around a predetermined axis. In this embodiment, as shown in FIG. 1, the elevating member W is configured to rotate around a horizontal axis, but may also rotate around a vertical axis. Moreover, the elevating member W is not limited to one that rotates around a predetermined axis, but may be configured to slide along a horizontal direction or a vertical direction.

The elevating mechanism M raises and lowers the elevating member W using the driving force generated by the drive device 1. The elevating mechanism M converts the operating force output from the drive device 1 into an elevating operation of the elevating member W, thereby elevating the elevating member W. In this embodiment, the elevating mechanism M receives rotational force from the drive device 1, and uses the rotational force to move the elevating member W up and down.

As shown in FIG. 1, the elevating mechanism M includes an elevating member W provided on a base F, an elevating member M1 that moves the elevating member W between an initial position and an operation end position, and a drive generated by a drive device 1. It includes a transmission mechanism M2 that transmits force to the elevation operating member M1. In this embodiment, the initial position of the elevating member W is as shown by the solid line in FIG. It is a position that extends horizontally to The operation end position of the elevating member W is the position where the elevating member W reaches a predetermined position above the base F, as shown by the two-dot chain line in FIG. After moving to the operation end position, the elevating member W moves again to the initial position, and rises and lowers between the initial position, which is a lowered position, and the operation end position, which is a raised position. Note that the initial position and the operation end position of the elevating member W are changed as appropriate depending on the operating range and operating method of the elevating member W.

The structure of the elevating 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 this embodiment, as shown in FIG. 1, the elevating member M1 includes a connecting portion M12 that connects the actuating arm M11 and the elevating member W, and an actuating arm M11 that moves the elevating member W that is connected to the connecting portion M12. , it has a shaft portion M13 serving as a rotation axis of the actuating arm M11 and an elevating member W. In addition to the above-mentioned arm mechanism, the lifting member M1 may be configured to convert the rotational movement outputted by the transmission mechanism M2 into a linear movement to cause the lifting member W to move linearly, or may be configured to move the lifting member W linearly. The rotational motion output by the mechanism M2 may be configured to be transmitted as a rotational motion of the elevating member W around the rotational axis. Further, when the operating force due to the linear movement is output from the transmission mechanism M2, the elevation operating member M1 may transmit the operating force due to the linear movement from the transmission mechanism M2 as a linear movement or as a rotational movement. Good too.

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

The structure of the transmission mechanism M2 is not particularly limited as long as it can transmit the driving force generated by the drive device 1 to the elevation operating member M1. In this embodiment, the transmission mechanism M2 includes, as shown in FIG. 1, a first transmission gear M21 connected to the elevation operating member M1, and a second transmission gear M22 that meshes with the first transmission gear M21. There is. The second transmission gear M22 is directly or indirectly connected to the operating shaft Ax (see FIG. 1) provided on the drive device 1 side. In this embodiment, when the first transmission gear M21 rotates, the actuating arm M11 is swung and the elevating member W is moved up and down. 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 Ax and rotates by rotation of the operating shaft Ax. 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 important if the elevation operating member M1 can be moved via the second transmission gear M22 and the first transmission gear M21 by rotation of the operating shaft Ax. Not limited. 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.

As shown in FIG. 2, the drive device 1 includes a flexible elongated member 2, a winding member 3 connected to one end of the elongated member 2, and winding and unwinding the elongated member 2. The rotating member 4 rotates in the same direction as the winding member 3 rotates. Further, the drive device 1 rotates the winding member 3 relative to the rotating member 4, thereby moving the rotating member 4 in the axis X direction of the winding member 3 so as to separate the rotating member 4 from the winding member 3. a moving mechanism 5 (see FIGS. 3 to 6), a load member 6 that applies a load to the rotation of the rotation member 4, and a load member 6 that applies a load to the rotation of the rotation member 4 in order to rotate the winding member 3 relative to the rotation member 4. and an actuating member 7 operated by. As will be described later, the rotating member 4 is located between a close position where it is close to the winding member 3 (see FIG. 3) and a remote position where it is spaced apart from the winding member 3 (see FIGS. 5 and 6). It is movable in the axis X direction. As will be described later, the actuating member 7 is actuated by the rotation of the rotating member 4 when the rotating member 4 is located at the separated position.

The drive device 1 directly or indirectly operates an actuated object such as the elevating member W by operating the operating member 7 via the winding member 3 and the rotating member 4 by operating the elongated member 2 . Note that in this embodiment, the object to be operated by the drive device 1 is the elevating member W, but the object to be actuated is not limited to the elevating member W. For example, the actuation target may be the actuation member 7 itself, a member directly connected to the actuation member 7, or a member indirectly connected to the actuation member 7.

Although details will be described later, in the drive device 1, when the elongated member 2 is operated, the winding member 3 rotates around the axis X (see FIG. 2). When the winding member 3 rotates around the axis At the same time, the rotating member 4 moves to the separated position. When the rotating member 4 moves to the separated position, the actuating member 7 is actuated by the rotation of the rotating member 4. In this embodiment, when the rotating member 4 is in the separated position, the rotational force of the winding member 3 in the direction around the axis X is transmitted to the rotating member 4, and by the rotation of the rotating member 4, The actuating member 7 is configured to rotate.

In this embodiment, the drive device 1 has a transmission part 8 between the actuating member 7 and the actuated object, as shown in FIG. More specifically, the transmission part 8 is provided between the actuation member 7 and the actuation axis Ax. The transmission section 8 transmits the operating force transmitted to the actuating member 7 toward an object to be actuated. The structure of the transmission part 8 is not particularly limited as long as it can transmit the operating force transmitted to the actuating member 7 toward the actuated object. The transmission unit 8 includes a plurality of transmission members such as gears, and transmits the operating force of the actuation member 7 to the actuated object via the plurality of transmission members. Specifically, as shown in FIG. 2, the transmission unit 8 includes a drive gear 81 that rotates due to the rotation of the actuation member 7, and an actuation gear 82 that rotates the actuation shaft Ax to which the rotational force of the drive gear 81 is transmitted. It has

In this embodiment, the transmission unit 8 rotates the operating shaft Ax (or the actuated object) in one direction D1 (see FIG. 2) and in the other direction D2 (see FIG. 2) by rotating the operating member 7 in one direction. It is configured to be switchable. Specifically, as shown in FIG. 2, the transmission unit 8 includes, in addition to a drive gear 81 and an operating gear 82, an intermediate gear 83 that is connected to the operating gear 82 and rotates the operating shaft Ax in the other direction; It has a transmission gear 84 that transmits the rotation of the drive gear 81. Further, by moving the transmission gear 84, the drive device 1 can rotate the operating shaft Ax in one direction through the connection with the operating gear 82 in a first connection state and rotate the operating shaft Ax in the other direction through the connection with the intermediate gear 83. It has a switching member 9 that switches to a second connected state of rotation. The operating axis Ax uses a shaft member in the embodiment shown in the figure, but instead of the shaft member, a geared cable or a torque cable is used as the rotation shaft, and the rotation shaft is used as the driving force transmitted by the transmission gear 84. The object to be actuated may be actuated by rotating the actuator.

The drive device 1 of this embodiment can rotate the operating shaft Ax as an output by operating the elongated member 2, and by operating the operating member T such as an outer tube connected to the switching member 9. The direction of rotation of the operating axis Ax is switched by operating the elongated member 2. Although details will be described later, a first connection state in which the transmission gear 84 and the operating gear 82 are connected and a connection state in which the transmission gear 84 and the intermediate gear 83 are connected by the switching member 9 operated by the operation member T such as an outer tube. By switching the connection state of the transmission gear 84 between the second connection state and the second connection state, the rotation direction of the operating shaft Ax is switched. Thereby, the drive device 1 operates the actuated object, such as the elevating member W, in two directions with a simple operation. Note that details of the operation of the drive device 1 will be described later.

The elongated member 2 is a member for operating the winding member 3 in order to operate the operating member 7. In this embodiment, when the winding member 3 is operated by the elongated member 2, the operating shaft Ax and the elevating member W, which is the operating target, are operated via the operating member 7. The structure of the elongated member 2 is not particularly limited as long as the winding member 3 can be operated. In this embodiment, the elongated member 2 is an operating wire, more specifically a flexible inner cable.

In this embodiment, as shown in FIG. 2, the elongated member 2 is connected to a winding member 3, and can be wound onto and unwound from the winding member 3. By pulling the member 2, operating force is transmitted to the winding member 3. The elongated member 2 has one end (not shown) connected to the winding member 3 and the other end having the elongated member operating portion P, and the other end having the elongated member operating portion P is It is led out from the case C (in this embodiment, it is composed of a first case member C1 and a second case member C2). By operating the elongate member operating section P and pulling the elongate member 2, the elongate member 2 is paid out from the winding member 3, and the winding member 3 rotates around the axis X.

The operating member T is a member for operating a switching member 9, which will be described later. In this embodiment, the operating member T is an outer tube that covers the outer periphery of the elongated member 2 (hereinafter also referred to as outer tube T). The outer tube T is a cylindrical member with both ends open, and accommodates the elongated member 2 so that the elongated member 2 can move in the axial direction with respect to the outer tube T. In this embodiment, the outer tube T is operated to switch the rotation direction of the actuation axis Ax. One end Ta of the outer tube T is connected to a switching member 9 (a driven member 91 described later) and located inside the case C, and the other end Tb is located outside the case C. The outer tube T has an operating member operation section (outer tube operation section) P2 for operating the outer tube T on the other end Tb side. Note that the operating member T is not limited to the outer tube as long as the switching member 9 can be operated, and may have a shape and structure different from that of the outer tube, such as a shaft member that is separately provided without housing the elongated member 2. It may be a member having.

The winding member 3 is connected to one end of the elongated member 2 and is configured to rotate when the elongated member 2 is pulled. When the long member 2 is pulled, the winding member 3 rotates in one direction, and the long member 2 wound around the winding member 3 is unwound from the winding member 3. In this embodiment, the drive device 1 further includes a winding member biasing member S1, and the winding member 3 is biased in a direction in which the elongated member 2 is wound up by the winding member biasing member S1. has been done.

The structure of the winding member 3 is not particularly limited as long as it can be rotated by the operation of the elongated member 2 and transmit rotational motion to the operating member 7. In this embodiment, the winding member 3 is a drum rotatably provided with respect to the case C, and accommodates a winding groove 31 around which the elongated member 2 is wound and a winding member biasing member S1. It has a accommodating part 32.

The winding member urging member S1 urges the winding member 3 in the direction in which the elongated member 2 is wound up. The take-up member biasing member S1 applies a biasing force to the take-up member biasing member S1 when the elongate member 2 is pulled and the take-up member 3 rotates so that the elongate member 2 is unwound from the take-up member 3. is accumulated. When the operation of the long member 2 is released, the winding member 3 rotates in the direction to wind up the long member 2 due to the urging force accumulated in the winding member urging member S1, and the long member 2 returns to the initial position. Return to

The structure of the winding member biasing member S1 is not particularly limited as long as it can bias the winding member 3 so that the winding member 3 rotates in the direction in which the elongated member 2 is rolled up. In this embodiment, as shown in FIG. 2, the winding member biasing member S1 is a spiral spring. The winding member biasing member S1, which is a spiral spring, is accommodated in a housing portion 32 as a recess provided on one end surface of the winding member 3, and one end is attached to the case C side, and the other end is attached to the winding member It is attached to 3. Note that the winding member biasing member S1 may be any other biasing member such as a spring, as long as it can bias the winding member 3 to rotate in the direction in which the elongated member 2 is rolled up.

In this embodiment, the drive device 1 has a clutch mechanism CL including a rotating member 4 and an actuating member 7, as described later. The clutch mechanism CL transmits the rotational force of the winding member 3 rotated by the operation of the elongated member 2 to the actuation target side (in this embodiment, the drive gear 81). The structure of the clutch mechanism CL is not particularly limited as long as it can transmit the rotational force of the winding member 3 rotated by the operation of the elongated member 2 to the side to be operated. In the present embodiment, the clutch mechanism CL transmits the unidirectional rotational force of the winding member 3 to the actuation target side when the elongated member 2 is pulled, and when the elongated member 2 is released from the operation. When the elongated member 2 is wound up on the winding member 3, the rotational force of the winding member 3 in the other direction is not transmitted to the side to be operated. Specifically, as shown in FIG. 2, the clutch mechanism CL includes a rotating member 4 that rotates in the same direction as the winding member 3 rotates, and a load member 6 that applies a load to the rotation of the rotating member 4. , an actuation member 7 provided with an engagement/disengagement portion 71 that can be engaged with and disengaged from the rotating member 4, and a rotating member urging member S2 that urges the rotating member 4 toward the winding member 3 side.

Although details will be described later, by operating the elongated member 2, the winding member 3 rotates in the direction in which the elongated member 2 is fed out. When the winding member 3 rotates in the unwinding direction, the rotating member 4 separates from the winding member 3 in the axis X direction, and the rotating member 4 rotates in the same direction as the winding member 3. By separating from the winding member 3 in the axis X direction, the rotating member 4 engages with the actuating member 7 and rotates the actuating member 7 in the same direction as the rotating member 4. When the actuating member 7 rotates in the same direction as the rotating member 4, the rotation of the actuating member 7 causes the drive gear 81 to rotate. On the other hand, when the operation of the elongated member 2 is released, the rotating member 4 moves toward the winding member 3 in the axis X direction, the engagement between the rotating member 4 and the operating member 7 is released, and the winding member The rotational force in the direction of winding up the elongated member 2 of No. 3 is not transmitted to the drive gear 81.

The rotating member 4 is configured to rotate in the same direction as the winding member 3 in accordance with the rotation of the winding member 3. In this embodiment, the rotating member 4 is arranged coaxially with the winding member 3 and is rotatably provided in the case C, as shown in FIG. As will be described later, the rotating member 4 can rotate relative to the winding member 3 at a predetermined angle, and is configured to rotate together with the winding member 3 after rotating relative to the winding member 3 at a predetermined angle. .

The rotating member 4 is attached to the winding member 3 so as to be close to and separated from the winding member 3 in the axis X direction. As shown in FIG. 2, the rotating member 4 is urged toward the winding member 3 by a rotating member urging member S2. In the initial state where the elongated member 2 is not operated, the rotating member 4 is located at a close position close to the winding member 3 in the axis X direction due to the urging force of the rotating member urging member S2 (see FIG. (See 3). As shown in FIGS. 3 to 6, the rotating member 4 is rotated relative to the rotating member 4 by a moving mechanism 5, which will be described later, while resisting the biasing force of the rotating member biasing member S2. and moves away from the winding member 3 in the axis X direction. When the rotating member 4 moves away from the winding member 3 in the axis Rotate in the same direction. In this embodiment, the rotating member 4 has a rotating member-side engaging/disengaging portion 41 (see FIGS. 3 to 6) that can be engaged with the engaging/disengaging portion 71 of the operating member 7 in the rotational direction of the rotating member 4. When the engaging/disengaging portion 71 of the actuating member 7 and the rotating member side engaging/disengaging portion 41 of the rotating member 4 engage in the direction around the axis X, the actuating member 7 moves in the same direction as the rotating member 4. Rotate. Note that the relative rotation between the winding member 3 and the rotating member 4 is such that when the winding member 3 rotates, the rotating member 4 rotates at a speed lower than the rotational speed of the winding member 3; It also includes one in which only the winding member 3 rotates without rotating the winding member 4.

Although the rotating member 4 is not limited to the illustrated structure, in this embodiment, it is a disk having an engaged portion 42 on its outer periphery that engages an engaging portion 61 of a load member 6, which will be described later, in the rotational direction of the rotating member 4. It is a shaped member. More specifically, the rotating member 4 has concave portions and convex portions alternately formed on the outer periphery, and the engaged portion 42 is configured as a stepped portion between the concave portion and the convex portion. Note that the outer periphery of the rotating member 4 may be formed as a tooth row of a gear. Further, as will be described later, the rotating member 4 has a protrusion PR (see FIG. 2) that protrudes from the end surface of the rotating member 4 on the winding member 3 side, and the rotating member side It has an engagement/disengagement part 41 (see FIGS. 3 to 6).

In this embodiment, the rotating member biasing member S2 is provided between the end face of the actuating member 7 and the end face of the rotating member 4, which face each other, as shown in FIG. The position where the rotating member urging member S2 is installed is not particularly limited as long as it can urge the rotating member 4 toward the winding member 3 side. For example, the rotating member biasing member S2 may be provided between the end face of the rotating member 4 and the end face of the winding member 3, which face each other, to bias the rotating member 4 toward the winding member 3. , may be provided at other positions. In this embodiment, a 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 6 is a member that applies a load to the rotational direction of the rotating member 4 to suppress rotation in the rotational direction. The load member 6 applies a load to the rotating member 4, thereby suppressing rotation of the rotating member 4 when the winding member 3 starts rotating. Although the load member 6 is directly connected to the rotating member 4 in this embodiment, it may be indirectly connected to the rotating member 4 via another member. Further, although the load member 6 is connected to the driven member 91 in this embodiment, it may be connected to other parts such as the case C. Note that details of the load member 6 will be described later.

The moving mechanism 5 rotates the winding member 3 relative to the rotating member 4, thereby moving the rotating member 4 in the axis X direction away from the winding member 3. Specifically, as shown in FIGS. 3 to 6, by applying a load in the rotational direction to the rotating member 4 by the load member 6, the winding member 3 is rotated relative to the rotating member 4, and the winding is performed. The relative rotation between the gripping member 3 and the rotating member 4 is converted into a linear motion of the rotating member 4 in the axis X direction, and the rotating member 4 is moved in the axis X direction. Further, the moving mechanism 5 allows both the winding member 3 and the rotating member 4 to rotate around the axis X after the rotating member 4 has moved in the axis X direction by a predetermined distance.

The structure of the moving mechanism 5 can be particularly improved if the rotating member 4 can be moved in the axis X direction away from the winding member 3 by rotating the winding member 3 relative to the rotating member 4. Not limited. In the present embodiment, the moving mechanism 5 includes a separating mechanism S that is provided between the winding member 3 and the rotating member 4 and separating the rotating member 4 from the winding member 3 in the axis X direction; and a loose fitting mechanism L in which the winding member 3 can transition between an engaged state and a relative movement permitted state.

The separating mechanism S separates the rotating member 4 from the winding member 3 in the axis X direction in order to engage the rotating member 4 with the operating member 7 . As shown in FIGS. 3 to 6, the separating mechanism S includes a guide portion Sa that guides the rotating member 4 in a direction in which it is relatively separated from the winding member 3 in the axis X direction, and a guide portion Sa that is connected to the guide portion Sa. It has a connecting portion Sb that moves relatively.

The guide portion Sa is connected to the connecting portion Sb when the winding member 3 rotates in one direction D1, and acts between the guide portion Sa and the connecting portion Sb when the winding member 3 rotates in one direction D1. The force is converted into a force that causes the rotating member 4 to separate from the winding member 3 in the axis X direction, thereby separating the rotating member 4 from the winding member 3. As shown in FIGS. 3 to 6, after the winding member 3 rotates and the connection portion Sb contacts and connects the guide portion Sa, the connection portion Sb is guided along the guide portion Sa while the winding member 3 is rotated. The take-up member 3 and the rotating member 4 rotate relative to each other to separate the rotating member 4 from the take-up member 3.

In this embodiment, the guide portion Sa of the spacing mechanism S is provided on the rotating member 4. Specifically, the guide portion Sa is provided on a protrusion PR that protrudes toward the winding member 3. Note that the guide portion Sa may be provided on the winding member 3. For example, a protrusion having a guide portion may be provided that protrudes from the winding member 3 toward the rotating member 4. In this embodiment, as shown in FIGS. 3 to 6, the protrusion PR includes 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. Note that in this embodiment, the axial protrusion PR1 and the fitting protrusion PR2 are integrally provided adjacent to each other in the circumferential direction of the rotating member 4, but are provided separately and spaced apart in the circumferential direction. You can leave it there.

In this embodiment, the guide portion Sa of the spacing mechanism S is the inclined surface Sa1 of the axial protrusion PR1. For example, when the winding member 3 rotates relatively faster than the rotating member 4 and the winding member 3 rotates relative to the rotating member 4, the inclined surface Sa1 of the axial protrusion PR1 forms a connection portion. It is sufficient that the rotating member 4 is inclined so as to be spaced apart from the winding member 3 in the axis X direction by guiding Sb to the inclined surface Sa1. In the present embodiment, the inclined surface Sa1 provided on the axial protrusion PR1 protruding from the rotating member 4 is formed in the rotational direction ( The rotating member 4 is inclined so that its height from the end surface (the distance from the end surface in the axis X direction) increases as it advances in one direction D1) (see FIG. 2). In addition, when the guide part (slanted surface) is provided on the winding member 3 side, for example, the inclined surface is provided on the side opposite to the rotation direction of the winding member 3 and the rotating member 4 that rotate by the operation of the elongated member 2. The slope may be such that the height of the winding member 3 from the end surface (the distance from the end surface in the axis X direction) increases as the winding member 3 advances.

Note that the height of the guide portion Sa in the axis X direction may be configured such that movement in the axis X direction such that the rotating member 4 and the actuating member 7 can be engaged with each other can be realized.

The connecting portion Sb is connected in contact with the guide portion Sa, and when the winding member 3 rotates in one direction D1, the connecting portion Sb relatively moves along the guiding portion Sa, thereby connecting the rotating member 4 to the winding member. 3 in the axis X direction, and the rotating member 4 is brought closer to the actuating member 7. Thereby, the rotating member 4 engages with the operating member 7 and transmits the rotational force of the rotating member 4 to the operating member 7.

The connecting portion Sb is provided on the winding member 3 when the guide portion Sa is provided on the rotating member 4, and is provided on the rotating member 4 when the guiding portion Sa is provided on the winding member 3. . In this embodiment, the connecting portion Sb is provided on the winding member 3. In this embodiment, as shown in FIGS. 3 to 6, the connecting portion Sb connected to the guide portion Sa is the edge 33a of the opening 33 into which the axial protrusion PR1 is inserted. In addition, when the connecting part is provided on the rotating member 4 side, the connecting part should be the edge of the opening provided in the rotating member 4, into which the axial protrusion PR1 protruding from the winding member 3 is inserted. I can do it. The structure of the connecting portion Sb is not particularly limited as long as the connecting portion Sb can be relatively moved along the guiding portion Sa by contacting with the guiding portion Sa and rotating the winding member 3 in one direction D1. For example, protrusions that engage with each other in the circumferential direction are provided on both end faces of the winding member 3 and the rotating member 4 that face each other, and a guide portion Sa is provided on one of the protrusions and connected to the other protrusion. A section Sb may also be provided.

The loose fitting mechanism L is a mechanism that allows the winding member 3 and the rotating member 4 to transition between an engaged state and a relative movement allowed state. As shown in FIGS. 3 and 4, the relative movement permissible state means that the winding member 3 and the rotating member 4 rotate relative to each other due to the difference in rotational speed between the winding member 3 and the rotating member 4. It is a state of Moreover, as shown in FIGS. 5 and 6, the engaged state is defined as the relative relationship between the winding member 3 and the rotating member 4 by the winding member 3 and the rotating member 4 engaging in the rotational direction. This is a state in which rotation is suppressed and the winding member 3 and rotating member 4 rotate in conjunction with each other in the same direction.

In the loose fitting mechanism L, when the winding member 3 and the rotating member 4 are in a state where relative movement is allowed, the connecting part Sb is guided to the guide part Sa by the separating mechanism S, as shown in FIGS. 3 and 4. . When the rotating member 4 is separated from the winding member 3 in the axis X direction by the separating mechanism S and the rotating member 4 engages with the actuating member 7, the loose fitting mechanism L separates the rotating member 4 from the winding member 3. The member 4 is brought into engagement. Thereby, the actuating member 7 engaged with the rotating member 4 can rotate in one direction D1 in conjunction with the rotation of the winding member 3. In this embodiment, by rotating the operating member 7, the elevating member W is operated via the transmission portion 8, the operating shaft Ax, the elevating mechanism M, and the like.

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

As shown in FIGS. 3 and 4, the fitting protrusion PR2 allows the rotation member 4 and the take-up member 3 to rotate relative to each other while the take-up member 3 rotates at a predetermined rotation angle. The fitting mechanism is loosely fitted in the space within the opening. In addition, the fitting protrusion PR2 has a loose position after the winding member 3 is rotated by a predetermined angle while the winding member 3 and the rotating member 4 are in a state where relative movement is allowed, as shown in FIGS. 5 and 6. Rotationally engages at least a portion of the mating mechanism opening. When the fitting protrusion PR2 and at least a portion of the loose fitting mechanism opening are engaged in the rotational direction, relative rotation between the winding member 3 and the rotating member 4 is suppressed, and the winding member 3 and the rotating member 4 are are linked and rotate together.

In this embodiment, the fitting protrusion PR2 and the inner wall in the opening of the loose fitting mechanism engage in surface contact in the engaged state (see FIGS. 5 and 6). However, the fitting protrusion PR2 and the engagement portion within the loose fitting mechanism opening are engaged in such a manner that the relative rotation between the winding member 3 and the rotating member 4 is suppressed and they can rotate in conjunction with each other. do it.

In this embodiment, the fitting protrusion PR2 is provided on the rotating member 4, and the loose fitting mechanism opening is provided on the winding member 3. Note that the fitting protrusion PR2 may be provided on the winding member 3, and the loose fitting mechanism opening may be provided on the rotating member 4. The shape of the fitting protrusion PR2 is not particularly limited as long as it can engage with at least a portion of the loose fitting mechanism opening. In this embodiment, the fitting protrusion PR2 is provided as a substantially rectangular plate-shaped protrusion, as shown in FIG. Moreover, in this 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 33 provided in the winding member 3 when the rotating member 4 is pressed toward the winding member 3 by the rotating member urging member S2. In addition, in this embodiment, as shown in FIG. 2, three axial protrusions PR1 and three fitting protrusions PR2 are provided spaced apart in the circumferential direction. However, the number of the axial protrusion PR1 and the fitting protrusion PR2 is not particularly limited, and may be one or more than one.

The shape of the opening of the loose fitting mechanism can accommodate the fitting protrusion PR2, and the shape of the opening can be particularly improved if the winding member 3 and the rotating member 4 can be transitioned between an engaged state and a relative movement allowed state. Not limited. In this embodiment, the loose fitting mechanism opening is formed as the opening 33 integrally with the spacing mechanism opening that accommodates the axial protrusion PR1. In this embodiment, the opening 33 is an opening that opens toward the rotating member 4 in the end surface of the winding member 3 . The opening 33 has a predetermined length in the circumferential direction of the winding member 3 and a predetermined axial depth. In this embodiment, a plurality of 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 (separation mechanism opening) into which the axial protrusion PR1 is inserted may be provided separately.

In this embodiment, as shown in FIGS. 3 and 4, when the winding member 3 is rotated in one direction (one direction D1) by the feeding operation of the elongated member 2, the rotating member 4 is rotated by the loose fitting mechanism L. In the relative movement permissible state, the guide portion Sa guides the connecting portion Sb by relative rotation of the winding member 3 in one direction (first direction D1) with respect to the rotating member 4 by the load member 6. As a result, the rotating member 4 moves in the direction away from the winding member 3, and when the rotating member 4 moves to the separated position, the loose fitting mechanism L is in the engaged state, so that one side of the winding member 3 is moved. The rotation of the rotary member 4 causes the rotation member 4 to rotate in one direction, and the rotation of the rotation member 4 in one direction causes the actuating member 7 to rotate. Specifically, when the rotating member 4 moves to the separated position, the engaging/disengaging portion 71 engages with the rotating member side engaging/disengaging portion 41 of the rotating member 4, and the loose fitting mechanism L is in the engaged state. This suppresses relative rotation of the winding member 3. Therefore, when the elongated member 2 is operated, the winding member 3 rotates, the rotating member 4 and the operating member 7 rotate in the first direction D1, and the rotational force transmitted from the operating member 7 causes the drive device to 1 operation target becomes possible.

The actuating member 7 is actuated by the rotational force of the rotating member 4 when engaged with the rotating member 4 . In this embodiment, as shown in FIG. 2, the actuating member 7 is rotatably supported within the case C, and is provided coaxially with the winding member 3 and the rotating member 4. In an initial state in which the elongated member 2 is not operated, the actuating member 7 is spaced apart from the rotating member 4 in the axis X direction (see FIG. 3).

The actuating member 7 also rotates together with the winding member 3 and the rotating member 4 by engaging in the circumferential direction with the rotating member 4 that has been moved in the axis X direction by the spacing mechanism S. The actuation member 7 has an engagement/disengagement portion 71 that can be engaged with and disengaged from the rotating member 4 . In this embodiment, the engagement/disengagement portion 71 is provided on the end surface of the actuating member 7 facing the rotating member 4, as shown in FIG. The engaging/disengaging portion 71 engages with the rotating member side engaging/disengaging portion 41 of the rotating member 4 (see FIGS. 3 to 6). When the rotating member 4 is located at the separated position, the engagement/disengagement portion 71 and the rotating member side engagement/disengagement portion 41 engage with each other, and the rotational force of the rotating member 4 is transmitted to the actuating member 7 . In this embodiment, the engagement/disengagement portion 71 is constituted by a plurality of protrusions spaced apart in the circumferential direction on the end surface of the actuating member 7 facing the rotating member 4 . Note that the structure of the engagement/disengagement portion 71 is not particularly limited as long as it can engage when the operating member 7 and the rotating member 4 come close to each other and transmit the rotational force of the rotating member 4 to the operating member 7. .

In this embodiment, the actuating member 7 is connected to a drive gear 81 such that when the actuating member 7 rotates, the drive gear 81 can rotate together. Accordingly, in this embodiment, when the rotating member 4 and the actuating member 7 are engaged and rotated together, the drive gear 81 also rotates together. Further, when the engagement between the rotating member 4 and the operating member 7 is released, no rotational force is transmitted to the drive gear 81, and the drive gear 81 does not rotate.

Drive gear 81 is rotated by rotation of actuating member 7 . The drive gear 81 is rotatably supported within the case C. In this embodiment, as shown in FIGS. 2 and 7, the drive gear 81 is disposed coaxially with the actuating member 7, engages with the actuating member 7 in a direction around the axis X, and rotates together with the actuating member 7. It is composed of The drive gear 81 is connected directly or indirectly to the transmission gear 84 and is configured to be able to transmit rotational force to the transmission gear 84. In this embodiment, the teeth of the drive gear 81 mesh with the teeth of the transmission gear 84 to directly transmit the rotational force of the drive gear 81 .

Transmission gear 84 transmits the rotation of drive gear 81 toward actuation gear 82 . In this embodiment, the transmission gear 84 is connected to the operating gear 82 in a first connection state as shown in FIG. 7 by the switching member 9, and in a second connection state as shown in FIG. Configured to move between states. In this embodiment, the transmission gear 84 is one gear formed to have a smaller diameter than the drive gear 81. However, the size and number of the transmission gears 84 are not particularly limited as long as the rotational force of the drive gear 81 can be transmitted toward the operating gear 82.

The intermediate gear 83 is connected to the operating gear 82, and when the transmission gear 84 is in the second connected state (see FIG. 8), in which the transmission gear 84 is connected to the intermediate gear 83, the transmission gear 84 rotates due to the rotation of the drive gear 81. The rotational force is transmitted to the operating gear 82. In the first connected state (see FIG. 7) in which the transmission gear 84 is connected to the operating gear 82 and the rotation of the transmission gear 84 is transmitted to the operating gear 82 without going through the intermediate gear 83, the operating shaft Ax is connected to the driving gear 81. , the transmission gear 84, and the operating gear 82 to rotate in one direction D1. On the other hand, in a second connected state (see FIG. 8) in which the transmission gear 84 is connected to the intermediate gear 83 and the rotation of the transmission gear 84 is transmitted to the operating gear 82 via the intermediate gear 83, the operating shaft Ax is It rotates via a gear 81, a transmission gear 84, an intermediate gear 83, and an operating gear 82, and the rotation direction of the operating shaft Ax is the other direction D2 opposite to the one direction D1. Although the operating shaft Ax is not shown in FIGS. 7 and 8, since the operating shaft Ax rotates in the same direction as the operating gear 82, the operating gear 82 rotates when the operating shaft Ax rotates in one direction D1. Rotation in one direction is indicated by the same reference numeral D1, and rotation in the other direction of the operating gear 82 when the operating shaft Ax rotates in the other direction D2 is indicated by the same reference numeral D2.

The actuating gear 82 is rotated by the rotation of the actuating member 7, and rotates the actuating shaft Ax. The operating gear 82 rotates by the rotational force of the transmission gear 84 that transmits the rotation of the drive gear 81, and rotates in the forward direction (one direction D1) depending on the connection state (first connection state or second connection state) of the transmission gear 84. rotation) or reverse rotation (rotation in the other direction D2). The operating gear 82 is directly or indirectly connected to the operating shaft Ax. In this embodiment, when the actuating gear 82 rotates in one direction D1, the actuating shaft Ax is rotated in the same direction D1. On the other hand, when the operating gear 82 rotates in the other direction D2, the operating shaft Ax is rotated in the same direction as the other direction D2. Note that the operating gear 82 and the operating shaft Ax may be indirectly connected via another member and rotate in opposite directions. The operating gear 82 meshes with the intermediate gear 83 in this embodiment.

The actuation axis Ax rotates around a predetermined axis to actuate an object to be actuated by the drive device 1 . The object to be operated by the operating axis Ax is not particularly limited. In this embodiment, the operating target is the elevating member W, which extends to the outside of the case C through the opening Ca (see FIG. 2) provided in the case C and is connected to the elevating mechanism M, as described above. and raises and lowers the elevating member W. The operating shaft Ax is directly or indirectly connected to the operating gear 82 and rotates as the operating gear 82 rotates. In this embodiment, the operating shaft Ax engages with an engagement hole 82a (see FIG. 7) provided at the center of the operating gear 82, and rotates in the same direction as the operating gear 82.

The switching member 9 moves the transmission gear 84 between a first connection state (see FIG. 7) in which the transmission gear 84 connects with the operating gear 82 and a second connection state (see FIG. 7) in which the transmission gear 84 connects with the intermediate gear 83. 8)), the connection state of the transmission gear 84 is switched between the two. In this embodiment, the operating member T is connected to the switching member 9, and as shown in FIGS. 7 and 8, by operating the operating member T, the operating shaft Ax is rotated in one direction D1 or the other direction D2. That is, when the operation member T is operated, the switching member 9 connected to the operation member T is operated, and the connection state of the transmission gear 84 is changed between the first connection state (see FIG. 7) and the second connection state (see FIG. (see 8). As a result, as shown in FIG. 7, when the elongated member 2 is operated in the first connected state where the transmission gear 84 and the operating gear 82 are connected, the winding member 3, the rotating member 4 and the operating member The rotation of the drive gear 81 that rotates through the drive gear 7 is transmitted to the actuation shaft Ax through the transmission gear 84 and the actuation gear 82, and the actuation shaft Ax rotates in one direction D1. On the other hand, as shown in FIG. 8, when the elongated member 2 is operated in the second connected state where the transmission gear 84 and the intermediate gear 83 are connected, the winding member 3, the rotating member 4 and the operating member 7 The rotation of the drive gear 81 is transmitted to the operating shaft Ax via the transmission gear 84, the intermediate gear 83, and the operating gear 82, and the operating shaft Ax rotates in the other direction D2. In this way, by operating the operating member T, the rotational direction of the actuation axis Ax is switched to a desired rotational direction, and then by operating the elongated member 2, the operation target can be operated in the desired direction. . Further, the operating member T that performs an operation for switching the rotational direction of the operating axis Ax is an outer tube provided coaxially with the elongated member 2. In this case, it is easier for the user to operate than when two long members are provided separately to perform separate operations (switching the rotation direction and rotating the operating axis Ax). , the operating portion of the drive device 1 can be made compact.

The structure of the switching member 9 is not particularly limited as long as the connection state of the transmission gear 84 can be switched between the first connection state and the second connection state described above. In this embodiment, the switching member 9 includes a cam portion 92 and a support portion 93 that supports movement of the cam portion 92, as shown in FIGS. 2, 7, and 8. Further, in this embodiment, the switching member 9 includes a driven member 91 to which one end Ta of the operating member T is connected.

By operating the operating member T, the cam portion 92 is moved to a first position (see FIG. 7) where the transmission gear 84 is placed in the first connected state and a second position (see FIG. 8) where the transmission gear 84 is placed in the second connected state. and move. In this embodiment, the cam portion 92 is configured to rotate around the axis of the drive gear 81, and rotatably holds the transmission gear 84. By locating the cam portion 92 at the first position, the connected state of the transmission gear 84 becomes a first connected state in which the transmission gear 84 and the operating gear 82 are connected. On the other hand, by moving the cam portion 92 to the second position, the connected state of the transmission gear 84 becomes a second connected state in which the transmission gear 84 and the intermediate gear 83 are connected. In this embodiment, the cam part 92 is supported by the support part 93 in each of the first position and the second position, and the transmission gear 84 is in the meshing state with the operating gear 82 or the intermediate gear 83 (first connected state or The second connection state) can be maintained.

The structure of the cam part 92 is not particularly limited as long as the cam part 92 can move to the first position or the second position and put the transmission gear 84 in the first connected state or the second connected state. In this embodiment, the cam portion 92 extends from the axis of the drive gear 81 toward the outside in the radial direction of the drive gear 81 and beyond the outer circumference of the drive gear 81 . In this embodiment, the cam portion 92 includes a shaft portion 921 that is a portion around the rotation axis of the cam portion 92, and an extension portion 922 that extends radially outward from the shaft portion 921. The transmission gear 84 is rotatably attached to a portion of the extension portion 922 that extends beyond the outer periphery of the drive gear 81 . The extending portion 922 extends beyond at least the rotation axis of the transmission gear 84 and has a pair of side portions 922a and 922b extending radially outward from the shaft portion 921 side. Further, in this embodiment, as shown in FIG. 2, the cam portion 92 includes two plate-shaped cam members 92a and 92b that sandwich the drive gear 81 and the transmission gear 84 in the axial direction. In this embodiment, the cam portion 92 is urged by the cam member urging member S3 in the direction around the axis in the direction in which the support portion 93 is provided.

The support portion 93 supports the cam portion 92 in the first position or the second position. In this embodiment, the support portion 93 is provided with a cam so that the first connected state or the second connected state of the transmission gear 84 is not released when the transmission gear 84 is in the first connected state or the second connected state. The movement of the cam part 92 is restricted by supporting the part 92. In this embodiment, the support part 93 is provided at a second position corresponding to the first position of the cam part 92 so that the support part 93 can support the cam part 92 at each of the first position and the second position of the cam part 92. 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 92.

In this embodiment, the support portion 93 is configured to be movable between a first support position and a second support position when the operation member T is operated. In this embodiment, the switching member 9 is provided with a locking portion 91a that locks an end (one end Ta) of the operating member T, and when the operating member T is operated, the switching member 9 is operated via the locking portion 91a. Then, the support portion 93 moves to the first support position and the second support position. Thereby, the support portion 93 supports the cam portion 92 at the first position and the second position. In this case, even if the transmission gear 84 is moved by the cam portion 92, the meshing state with the operating gear 82 or the intermediate gear 83 is released in the first connection state or the second connection state of the transmission gear 84. The transmission state of the rotational force from the drive gear 81 to the operating gear 82 can be maintained without being affected.

Note that the method of operating the support part 93 is not particularly limited as long as the support part 93 can be moved between the first support position and the second support position by operating the operating member T. In this embodiment, the switching member 9 moves within the case C, has a driven member 91 having a locking portion 91a to which one end Ta of the operating member T is locked, and the support portion 93 moves in the case C. Accordingly, it is configured to rotate about an axis and move between a first support position and a second support position. The support part 93 is configured to rotate around a rotation axis extending in a direction parallel to the rotation axis of the cam part 92, and includes a rotation shaft part 93a and a protrusion that projects from the rotation shaft part 93a onto the movement trajectory of the driven member 91. 93b, and a contact body 93c that extends a predetermined length from the rotating shaft portion 93a and comes into contact with the cam portion 92. On the other hand, the driven member 91 is configured to be movable (in this embodiment, linearly movable) within the case C by operating the operating member T, and has an engaging body 91b that engages with the protrusion 93b. The driven member 91 has a first operating position (or a retracted position, see FIG. 7) corresponding to the first supporting position of the supporting part 93, and a second operating position (or forward position) corresponding to the second supporting position of the supporting part 93. (see Figure 8). In this embodiment, the driven member 91 includes a driven member biasing member S4 and a known heart cam mechanism (not shown), and each time the operating member T is operated, the driven member 91 is moved between the first operating position and the second operating position. It is configured to be able to move back and forth between the two.

In this embodiment, the support part 93 is configured such that a load is applied to the transmission gear 84 from the drive gear 81 to the cam part 92, and the cam part 92 to which the transmission gear 84 is connected is caused by the load applied to the transmission gear 84. It is located in the direction you want to rotate. In this case, when the driving gear 81 and the transmission gear 84 mesh with each other to transmit rotational force, the meshing state between the operating gear 82 and the transmission gear 84 is prevented from being released. Further, the support portion 93 is located in a direction with respect to the cam portion 92 in which the cam portion 92 is rotated by the urging force of the cam member urging member S3.

In this embodiment, the contact body 93c of the support part 93 has a pair of side parts LT1 and LT2 extending in a direction away from the rotating shaft part 93a of the support part 93, and a tip side of each of the pair of side parts LT1 and LT2. and tip portions Ti that connect to each other. However, the shape of the contact body 93c is not particularly limited. In this embodiment, the support part 93 has a substantially rectangular cross section in the direction perpendicular to the rotation axis, and the tip Ti has a flat surface connecting the tip sides of a pair of side parts LT1 and LT2 that are substantially parallel to each other. is forming. Further, the pair of side portions LT1 and LT2 also have flat surfaces.

In this embodiment, when the support part 93 supports the cam part 92 in the first position shown in FIG. The cam portion 92 is held in the first position. At this time, due to the engagement between the drive gear 81 and the transmission gear 84, a force indicated by an arrow AR is applied from the cam portion 92 to the support portion 93. In the present embodiment, a line (a point in FIG. 7 (see chain line) extends along the direction AR of the force applied from the cam portion 92 to the support portion 93. Therefore, even if a force in the direction AR is applied from the cam part 92 to the support part 93, the support part 93 is prevented from rotating around the rotation axis, and the cam part 92 can be easily held at the first position. Become.

Moreover, when the cam part 92 moves to the second position, the support part 93 rotates around the rotation axis and supports the cam part 92 at the second support position, as shown in FIG. In this state, the support portion 93 is held at the second support position by the movement restriction portion R. The movement restriction portion R is a portion that comes into contact with the support portion 93 and restricts movement of the support portion 93 when the support portion 93 moves from the first support position to the second support position. Although the structure of the movement restriction part R is not particularly limited, in this embodiment, the movement restriction part R is shown as a wall part provided in the case C, and the side part LT1 of the contact body 93c of the support part 93 is are configured to abut. Due to the engagement between the drive gear 81 and the transmission gear 84, a force indicated by an arrow AR2 is applied from the cam portion 92 to the support portion 93, but the movement of the cam portion 92 is prevented by the provision of the movement restricting portion R. is regulated, and the cam portion 92 can be held at the second position. The contact body 93c of the support part 93 has a contact part with the cam part 92 at the first position for maintaining the first connected state of the transmission gear 84, and a contact part for maintaining the second connected state of the transmission gear 84. and a contact portion with the cam portion 92 at the second position.

In the first connected state of the transmission gear 84 shown in FIG. 7, the cam part 92 in the first position is supported by the support part 93 in the first support position, and the position of the transmission gear 84 is maintained and driven. The meshing state between the gear 81 and the transmission gear 84 and the meshing state between the transmission gear 84 and the operating gear 82 are ensured. When the rotational force is transmitted between the drive gear 81 and the transmission gear 84, a force in the clockwise direction indicated by the arrow AR is applied from the drive gear 81 to the cam portion 92. Further, a clockwise force is also applied to the cam portion 92 by the biasing force of the cam member biasing member S3.

In this embodiment, as shown in FIG. 7, the support part 93 supports the force that tries to rotate the cam part 92, thereby holding the cam part 92 in the first position and connecting it to the cam part 92. The meshing state of the transmission gear 84 with the drive gear 81 and the meshing state with the operating gear 82 can be maintained.

When switching the operating direction of the operating target from the state shown in FIG. 7 to the state shown in FIG. Switch to state.

Specifically, from the state shown in FIG. 7, the user operates the operating member operating section P2 shown in FIG. 2 to pull and operate the operating member T. When the operating member T is pulled, the driven member 91, in which one end Ta of the operating member T is locked at the locking portion 91a, moves downward in FIG. The driven member 91, which has been 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 pulling the operating member T. When the driven member 91 moves to the second operating position, the engaging body 91b of the driven member 91 engages with the protruding portion 93b of the support portion 93, and the support portion 93 is rotated counterclockwise in FIG. 7 around the rotating shaft portion 93a. (See Figure 8). When the support part 93 rotates toward the second support position, the cam part 92 biased by the cam member biasing member S3 rotates clockwise in FIG. position (see Figure 8). The support portion 93 that has moved to the second support position and the cam portion 92 are held at the position shown in FIG. 8 by the support portion 93 coming into contact with the movement restriction portion R and stopping.

When the cam portion 92 moves to the second position, the transmission gear 84 connected to the cam portion 92 is disengaged from the operating gear 82 and meshed with the intermediate gear 83, as shown in FIG. Thereby, the connection state of the transmission gear 84 is switched.

When the elongated member 2 is operated in the second connected state shown in FIG. The driven gear 81 rotates in the same direction (clockwise in FIG. 8).

When the drive gear 81 rotates, the transmission gear 84 that meshes with the drive gear 81, the intermediate gear 83 that meshes with the transmission gear 84, and the operating gear 82 rotate. In the first connected state shown in FIG. 7, the operating gear 82 rotates in one direction D1, but in the second connected state shown in FIG. is transmitted, the actuating gear 82 rotates in the other direction D2, which is opposite to the rotating direction of the actuating gear 82 in the first connected state. Therefore, the actuated object connected to the actuation axis Ax can be actuated in the opposite direction to that in the first connected state.

Next, details of the load member 6 will be explained. As described above, the load member 6 is a member that applies a load to suppress the rotation of the rotating member 4. Specifically, when the winding member 3 starts rotating, the load member 6 is a member that applies a load to suppress the rotation of the rotating member 4. suppress. In this embodiment, as shown in FIGS. 9 to 11, the load member 6 has an engaging portion 61 that engages with the outer periphery of the rotating member 4 to suppress rotation of the rotating member 4.

The engaging portion 61 engages with the outer periphery of the rotating member 4 when the rotating member 4 is in the close position, as shown in FIGS. 3, 4, and 9. Specifically, the engaging portion 61 rotates in the same direction as the direction in which the winding member 3 rotates when moving the rotating member 4 toward the separated position (one direction D1) when the rotating member 4 is in the close position. ) is engaged with an engaged portion 42 provided on the outer periphery of the rotating member 4 so as to suppress rotation of the rotating member 4. As a result, the rotation of the rotating member 4 is suppressed while the rotating member 4 is in the close position, and the moving mechanism 5 (separation mechanism S) moves the rotating member 4 away from the winding member 3 on the axis X. It becomes possible to move in the direction.

Furthermore, as shown in FIGS. 5, 6, and 10, the engaging portion 61 is provided so as to be in a non-engaging state with the outer periphery of the rotating member 4 when the rotating member 4 is in the separated position. There is. In this embodiment, after the rotating member 4 moves a predetermined distance in the axis The actuating member 7 can be easily actuated by rotation.

The width of the engaging portion 61 in the direction of the axis X is not particularly limited as long as it is configured to engage with the rotating member 4 in the close position and disengage with the rotating member 4 in the separated position. In this embodiment, the engaging portion 61 has a predetermined width in the axis have. In this embodiment, the width of the engaging portion 61 in the axis X direction is approximately equal to the thickness of the rotating member 4 in the axis X direction; It may be smaller or larger than that. Note that in this embodiment, the engaging portion 61 has a rod-shaped portion that can fit into a recess formed on the outer periphery of the rotating member 4; It is not particularly limited as long as it can engage with the outer periphery of the rotating member 4 and suppress the rotation of the rotating member 4 when the rotating member 4 is in the close position.

In this embodiment, the engaging portion 61 extends from the radially outer side of the outer periphery of the rotating member 4 toward the outer periphery of the rotating member 4 in a direction substantially perpendicular to the axis X, as shown in FIGS. 9 to 11. It is extending. For example, the engaging portion 61 may extend substantially parallel to the axis X from the winding member 3 side so as to engage with the outer periphery of the rotating member 4 located in a close position (for example, see FIG. 12).

In this embodiment, the elongated member 2, the winding member 3, the rotating member 4, the moving mechanism 5, the load member 6, and the actuating member 7 are provided, and the load member 6 is connected to the outer periphery of the rotating member 4. It has an engaging portion 61 that engages to suppress rotation of the rotating member 4. In the drive device 1 of this embodiment, when the elongated member 2 is operated and the winding member 3 rotates around the axis (see FIG. 6), the rotating member 4 is rotated relative to the rotating member 4 in the close position, and the rotating member 4 is moved to the separated position. When the rotating member 4 moves to the separated position, the actuating member 7 can be actuated by the rotation of the rotating member 4. In this way, in this embodiment, the driving device 1 can operate the actuating member 7 using the rotating member 4 by mechanically interlocking the components, so the driving device 1 can interlock the components using electric power such as an electromagnet. This eliminates the need for a mechanism (for example, an electric clutch mechanism). Therefore, the power consumption of the drive device 1 can be reduced and the weight of the drive device 1 can be reduced.

Further, in this embodiment, the engaging portion 61 engages with the outer periphery of the rotating member 4 when the rotating member 4 is in the close position, and engages with the outer periphery of the rotating member 4 when the rotating member 4 is in the separated position. It becomes engaged. Therefore, when the rotating member 4 is in the separated position, the rotating member 4 receives no resistance in the rotational direction from the load member 6, reducing the resistance when operating the object to be operated by the driving device 1, and Operability can be improved. Further, in order to operate the actuated object (for example, the elevating member W) by the actuating member 7, the elongated member 2 is continuously operated and the winding member 3 and the rotary member 4 are rotated by a predetermined amount. need to be activated. Normally, compared to the amount of operation of the elongated member 2 when moving the rotating member 4 from the close position to the separated position, the elongated member 2 when continuing to operate the actuated object after the rotating member 4 has moved to the separated position The amount of operation is longer. In this way, in a situation where it is necessary to operate the elongated member 2 for a long time, the load from the load member 6 is not applied to the rotating member 4, so that the operation of the actuated object becomes very comfortable.

The shape and structure of the load member 6 may be such that it can engage with the outer periphery of the rotating member 4 and be in a state of disengagement with the outer periphery of the rotating member 4 when the rotating member 4 moves to the separated position. Not limited. In this embodiment, as shown in FIGS. 9 to 11, the load member 6 has a shaft support 62 that pivotally supports the engagement portion 61 around the rotation axis X2, and when the rotation member 4 is in the proximate position, In addition, the engaging portion 61 restricts the rotation of the rotating member 4 in one direction D1, and when the rotating member 4 rotates in the other direction D2, it rotates around the rotation axis X2 and rotates the rotating member 4 in the other direction. It is configured so as not to inhibit the rotation of D2. In this case, the rotating member 4 is restricted from rotating in one direction D1 at the close position, but is allowed to rotate in the other direction D2. Therefore, when the winding member 3 is rotated in one direction D1 by the elongated member 2, the rotation of the rotating member 4 in the one direction D1 is restricted, and the rotating member 4 is moved to the separated position, and the operating member 7 can be operated. On the other hand, when the operation of the actuating member 7 is completed and the rotating member 4 returns from the separated position to the close position, the rotating member 4 can rotate in the other direction D2. Therefore, for example, when the winding member 3 rotates in the other direction D2 and the drawn out elongated member 2 is wound up on the winding member 3, the rotating member 4 and the winding member 3 rotate in the other direction D2. Rotation is not hindered, and the elongated member 2 can be easily wound up. In this embodiment, the winding member 3 is urged in the other direction D2, which is the direction in which the elongated member 2 is wound, by the winding member urging member S1. When the operation on the elongated member 2 is released and the winding member 3 rotates in the other direction D2 by the urging force of the winding member urging member S1, the rotating member 4 is rotated in the other direction D2 by the engaging portion 61. rotation is not obstructed. Therefore, the rotating member 4 can rotate in the other direction D2 together with the winding member 3, and the winding operation of the elongated member 2 can be performed smoothly.

In this embodiment, the shaft support 62 supports the engaging portion 61 so that the engaging portion 61 can rotate around a rotation axis X2 extending substantially parallel to the axis X, as shown in FIGS. 9 to 11. ing. Note that if the extending direction of the rotation axis X2 of the shaft support 62 is configured to restrict the rotation of the rotating member 4 in one direction D1 and not to inhibit the rotation in the other direction D2, for example, as shown in FIG. 12 or 13. As shown in FIG. 2, it may be provided substantially perpendicular to the axis Note that the modified example shown in FIG. 12 has the same basic operation as the engaging portion 61 shown in FIGS. It's the same. In addition, in the modification shown in FIG. 13, the rotation of the rotating member 4 in one direction D1 is restricted in the same manner as the engaging portion 61 shown in FIGS. 9 to 11, but the outer circumference of the rotating member 4 and/or The engaging portion 61 is provided with a tapered portion or the like at a portion that comes into contact with the other member when the rotating member 4 rotates in the other direction D2, so that the engaging portion 61 can prevent the rotating member 4 from rotating in the other direction D2. The engaging portion 61 is configured to come off the rotation trajectory (see the two-dot chain line in FIG. 13) and swing.

In addition, in this embodiment, the engaging part 61 is provided so as to be swingable with respect to the shaft support 62, and as shown in FIGS. 9 to 11, the engaging part 61 is rotated by the engaging part urging member S5. It is urged to move to a position where it can engage with the engaged portion 42 of the member 4. Further, the drive device 1 of the present embodiment is configured to swing the engaging portion 61 so that the engaging portion 61 urged by the engaging portion urging member S5 is held at a position where it can engage with the rotating member 4. It has a stopper part ST that restricts movement in one direction. When the drive device 1 (the load member 6) has the engaging part biasing member S5 and the stopper part ST, even if the engaging part 61 swings around the rotation axis X2, the engaging part biasing member By S5, the engaging portion 61 returns to a position where it can engage with the rotating member 4, and is stopped at a predetermined position by the stopper portion ST. Therefore, the engagement between the engaging portion 61 and the rotating member 4 can be ensured.

In this embodiment, the stopper part ST is a wall part provided on the driven member 91, but if it is possible to restrict movement in one direction in the swinging direction of the engaging part 61, it can be used in case C etc. may be provided. In this embodiment, the engaging portion biasing member S5 is a torsion spring having one end attached to the shaft support 62 and the other end attached to the driven member 91. The type of the engaging portion urging member S5 is not particularly limited as long as it can urge the engaging portion 61 to a position where it can engage with the engaged portion 42 of the rotating member 4. Note that in this embodiment, the engaging portion biasing member S5 does not contribute to the load for rotating the winding member 3 relative to the rotating member 4. Therefore, the engaging portion urging member S5 does not require a large urging force, and the engaging portion urging member S5 moves the engaging portion 61 to a position where it can engage with the engaged portion 42 of the rotating member 4. It suffices if it has the minimum urging force. Therefore, as described above, when the winding member 3 and the rotating member 4 rotate in the other direction D2 by the urging force of the winding member urging member S1 and perform the winding operation of the elongated member 2, the winding The load applied to the member 3 and the rotating member 4 can be reduced, and the elongated member 2 can be wound up smoothly.

Next, the action of the load member 6 of the drive device 1 of this embodiment will be explained using FIGS. 3 to 6 and FIGS. 9 to 11.

When operating an actuated object such as the elevating member W, the elongated member 2 is pulled downward in FIG. 9 from the state shown in FIG. 9, and the winding member 3 is rotated in one direction D1 around the axis X. let As the winding member 3 rotates, the rotating member 4 connected to the winding member 3 also tries to rotate in one direction D1, but as shown in FIGS. 3 and 9, the engagement portion 61 of the load member 6 The engaged portion 42 of the rotating member 4 is engaged in the direction around the axis X, and rotation of the rotating member 4 in one direction D1 is suppressed.

When the winding member 3 rotates while the rotation of the rotating member 4 is suppressed, the separating mechanism S causes the rotating member 4 to move to the separated position against the biasing force of the rotating member biasing member S2. (See Figures 4 and 5). When the rotating member 4 moves to the separated position, as shown in FIGS. 5 and 6, the rotating member-side engaging/disengaging portion 41 of the rotating member 4 and the engaging/disengaging portion 71 of the actuating member 7 move in the direction around the axis X. The actuating member 7 is rotated by the rotation of the rotating member 4. When the rotating member 4 is in the separated position, the engaging portion 61 is not engaged with the outer circumference of the rotating member 4, as shown in FIGS. 5, 6, and 10, and the rotation of the rotating member 4 is prevented. does not inhibit. Therefore, for example, compared to a drive device having a structure in which the rotating member and the load member continue to engage with each other from a position close to the rotating member 4 to a position away from the rotating member 4, the driving device 1 of the present embodiment rotates the actuating member 7. The resistance at the time is greatly reduced. Therefore, the elongated member 2 can be operated with a light operating force, and the operability of the drive device 1 is improved.

When the operation of the actuating object is completed and the operation on the elongated member 2 is released, the rotating member 4 is moved away from the actuating member 7 by the rotating member biasing member S2 to move the winding member away from the operating member 7. Move to a nearby position on the 3rd side. In the present embodiment, the winding member 3 is urged in the direction of winding up the elongated member 2 onto the winding member 3 by the winding member urging member S1, and the rotating member 4 is biased toward the winding member 3 by the protrusion PR. Since the rotating member 4 is engaged in the direction around the axis X, the rotating member 4 tries to rotate in the other direction D2, which is the opposite direction to the direction in which the operating member 7 is activated, along with the rotation of the winding member 3. At this time, since the engaging portion 61 can swing around the rotation axis X2 by the shaft support 62, it does not inhibit rotation of the rotating member 4 in the other direction D2. Therefore, when the winding member 3 and the rotating member 4 rotate in the other direction D2 and winding up the drawn out elongated member 2 onto the winding member 3, the winding member engages with the rotating member 4 in the rotational direction. The rotation of 3 is not hindered either. Specifically, the engaging portion 61 is biased by the engaging portion biasing member S5 in a direction in which it engages with the outer periphery of the rotating member 4, but when the rotating member 4 rotates in the other direction D2. As shown in FIG. 11, the engaging portion biasing member S5 swings relative to the shaft support 62 so as to deviate from the trajectory of the outer periphery of the rotating member 4. Rotation of the rotating member 4 in the other direction D2 is not inhibited. Therefore, when the operation on the elongated member 2 is released, the winding member 3 is rotated in the other direction D2 by the urging force of the winding member urging member S1, and the rotating member 4 is also rotated in the other direction D2. Therefore, the winding operation of the elongated member 2 can be performed smoothly.

1 Drive device 2 Elongated member 3 Winding member 31 Winding groove 32 Accommodating portion 33 Opening portion 33a Edge of opening portion 4 Rotating member 41 Rotating member side engagement/disengagement portion 42 Engaged portion 5 Moving mechanism 6 Load member 61 Engagement part 62 Axial support 7 Operating member 71 Disengagement part 8 Transmission part 81 Drive gear 82 Operating gear 82a Engagement hole 83 Intermediate gear 84 Transmission gear 9 Switching member 91 Followed member 91a Locking part 91b Engagement body 92 Cam part 92a , 92b Plate-shaped cam member 921 Shaft part 922 Extension part 922a, 922b Side part 93 Support part 93a Rotating shaft part 93b Projection part 93c Contact body A Lifting member operating device Ax Operating shaft C Case Ca Opening provided in the case C1 First case member C2 Second case member CL Clutch mechanism D1 One direction D2 Other direction F Base body L Loose fitting mechanism LT1, LT2 Side part M Lifting mechanism M1 Lifting operation member M11 Operating arm M12 Connection part M13 Shaft part M2 Transmission mechanism M21 First transmission gear M22 Second transmission gear P Long member operation section P2 Operation member operation section (outer tube operation section)
PR Projection PR1 Axial projection PR2 Fitting projection R Movement restriction section S Separation mechanism Sa Guide section Sa1 Inclined surface Sb Connection section S1 Winding member biasing member S2 Rotating member biasing member S3 Cam member biasing member S4 Driven Member biasing member S5 Engaging portion biasing member ST Stopper portion T Operating member (outer tube)
Ta One end of the operating member (outer tube) Tb The other end of the operating member (outer tube) Ti Tip portion W Elevating member X Axis of winding member X2 Rotating shaft

Claims (5)

a flexible elongated member;
a winding member to which one end of the elongated member is connected and which winds up and unwinds the elongated member;
a rotating member that rotates in the same direction as the winding member rotates;
a moving mechanism that moves the winding member in the axial direction of the winding member so as to move the rotary member away from the winding member by rotating the winding member relative to the rotating member;
a load member that applies a load to the rotation of the rotating member in order to rotate the winding member relative to the rotating member;
an operating member operated by the rotating member,
The rotating member is movable in the axial direction between a close position close to the winding member and a separated position spaced apart from the winding member,
The actuating member is actuated by rotation of the rotating member when the rotating member is located at a separated position,
The load member is
an engaging portion that engages with an outer periphery of the rotating member to suppress rotation of the rotating member;
The engaging portion engages with an outer periphery of the rotating member when the rotating member is in the close position, and disengages with the outer periphery of the rotating member when the rotating member is in the separated position. A drive device that is installed to The load member has a pivot support that pivots the engagement portion around a rotation axis,
When the rotating member is in the close position, the engaging portion restricts rotation of the rotating member in one direction, and when the rotating member rotates in the other direction, the engaging portion restricts rotation around the rotation axis. The drive device according to claim 1, wherein the drive device is configured so as not to inhibit rotation of the rotating member in the other direction. The actuation member has an engagement/disengagement portion that can engage and disengage from the rotating member;
The rotating member has a rotating member side engaging/disengaging portion that can be engaged with the engaging/disengaging portion in a rotational direction of the rotating member,
Claim: When the rotating member is located at the separated position, the engaging/disengaging portion and the rotating member side engaging/disengaging portion engage, and the rotational force of the rotating member is transmitted to the actuating member. 3. The drive device according to 1 or 2. The moving mechanism is
The rotating member includes a separating mechanism that separates the rotating member from the winding member in the axial direction, and a loose fitting mechanism that allows the rotating member and the winding member to transition between an engaged state and a relative movement allowed state. ,
The separation mechanism includes a guide portion that guides the rotating member in a direction in which the rotary member is relatively separated from the winding member in the axial direction, and a connecting portion that is connected to the guide portion and moves relatively,
When the winding member rotates in one direction due to the unwinding operation of the elongated member,
When the relative movement of the loose fitting mechanism is allowed, the load member rotates the winding member in one direction with respect to the rotating member, so that the guiding portion guides the connecting portion, so that the rotating member moving in a direction away from the winding member,
When the rotating member moves to the separated position, the loose fitting mechanism enters the engaged state, so that the rotating member rotates in one direction due to rotation of the winding member in one direction,
4. The drive device of claim 3, wherein rotation of the rotating member in one direction rotates the actuating member. The drive device further includes:
a winding member biasing member that biases the winding member in a direction in which the elongated member is wound up;
a rotating member urging member that urges the rotating member toward the winding member;
The drive device according to any one of claims 1 to 4.

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