JP7237743B2 - Deployment winding device for sheet-shaped member - Google Patents

Description

TECHNICAL FIELD The present invention relates to a technique for keeping a sheet-shaped member in an unfolded state.

Patent Literature 1 discloses a technique for pulling out or rolling up a roll blind on the rear window glass of a passenger car. The roll blind sheet is pulled out by means of a transmission comprising an electric motor, spur gears, coiled members with worms and the like.

Japanese Patent Application Laid-Open No. 2001-241277

According to the technique disclosed in Patent Document 1, the rotation of the electric motor is stopped after the roll blind sheet is pulled out. The roller blind sheet is kept in the extended state by keeping the transmission constant. Therefore, when a force is applied to the roll blind sheet in the winding direction, the force may act directly on the transmission device.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to maintain a sheet-like member in an unfolded state without depending on driving means for unfolding the sheet-like member.

A sheet-like member unfolding winding device according to a first aspect includes a sheet-like member, a winding shaft fixed to a base end of the sheet-like member, a winding shaft rotatably supporting the sheet-like member, and A winding device for winding the sheet-like member by urging the member in the winding direction, a stay attached to the tip of the sheet-like member, and the stay extending along the developed winding direction of the sheet-like member. a driving means for moving; and a locking member provided at a position away from the winding device in the unfolding direction of the sheet-like member and locked to the stay in a biased state when the sheet-like member is unfolded; It is movable with respect to the stay while being connected to the drive means, and when the drive means moves the stay in the winding-up direction of the sheet-like member, before the stay moves, the an unlocking member that moves relative to the stay to release the state in which the locking member is locked to the stay.

A second aspect is the sheet-shaped member unfolding winding device according to the first aspect, wherein the locking member includes a locking portion that locks with the stay and a contact portion that abuts with the unlocking member. The locking member is pushed by the unlocking member to move against the urging force, thereby unlocking the stay.

A third aspect is the sheet-like member unfolding winding device according to the second aspect, wherein a concave portion is formed between the engaging portion and the contact portion, and the unlocking member includes the A pressing portion for pushing and moving the locking member is included, and the pressing portion is disposed in the recess while the stay is locked to the locking portion.

A fourth aspect is the sheet-like member unfolding and winding device according to any one of the first to third aspects, wherein the unlocking member is positioned on the stay on the sheet-like member unfolding direction side. The locking member is movable between a first position and a second position in the take-up direction of the sheet-like member, and the locking member is positioned between a locking position where the stay can be locked and a locking position where the stay can be locked. The sheet-like member is movable between an unlocking position capable of releasing the lock, and is urged from the unlocking position toward the locking position. The locking release member is positioned at the first position, and at least one of the stay and the locking release member pushes the locking member toward the locking release position against the urging force, thereby forming the sheet-like member. When the member is unfolded, the locking member is pushed by an urging force to be positioned at the locking position and locked to the stay. By moving the releasing member toward the second position, the locking member is pushed toward the unlocking position against the biasing force, and the locked state between the locking member and the stay is released. It is to release.

A fifth aspect is the sheet-like member deployment winding device according to any one of the first to fourth aspects, wherein the driving means includes a linear driving mechanism.

According to the sheet-like member unfolding winding device according to the first aspect, the locking member locks the stay in a biased state while the sheet-like member is unfolded. Further, when the driving means moves the stay in the winding direction of the sheet-like member, the unlocking member moves with respect to the stay before the stay moves, and the locking member locks the stay. cancel the state of Therefore, the drive means can move the stay in the winding direction. As a result, the sheet-like member can be maintained in the unfolded state without depending on the driving means for unfolding the sheet-like member.

According to the second aspect, the unlocking member pushes the locking member through the contact portion. As a result, the locking member moves against the urging force and releases the locking of the stay. Since the abutting portion and the locking portion are separately provided, it is easy to make a structure suitable for locking and a structure for pushing and moving the locking member. As a result, locking and unlocking operations can be improved.

According to the third aspect, the pressing portion is arranged in the recess while the sheet member is unfolded. The pressing portion can smoothly press the contact portion during winding.

According to the fourth aspect, the sheet-like member can be smoothly unfolded and rolled up by the movement of the unlocking member and the movement of the locking member.

According to the fifth aspect, even if the drive means is a linear drive mechanism, the sheet-like member can be maintained in an unfolded state and the unfolded sheet-like member can be wound up.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic plan view showing a deployment winding device for a sheet-like member according to an embodiment; It is a partially enlarged plan view of the deployment winding device. It is a partially enlarged side view of the deployment winding device. FIG. 10 is an explanatory view showing an operation of locking the end of the stay to the locking member; FIG. 10 is an explanatory view showing an operation of locking the end of the stay to the locking member; FIG. 10 is an explanatory view showing an operation of locking the end of the stay to the locking member; FIG. 10 is an explanatory view showing an operation of locking the end of the stay to the locking member; FIG. 10 is an explanatory view showing an operation in which the end of the stay releases the lock on the lock member and moves in the winding direction; FIG. 10 is an explanatory view showing an operation in which the end of the stay releases the lock on the lock member and moves in the winding direction; FIG. 10 is an explanatory view showing an operation in which the end of the stay releases the lock on the lock member and moves in the winding direction; FIG. 11 is a schematic plan view showing a deployment winding device for a sheet-like member according to a modification;

{First embodiment}
<Overall configuration>
First, the overall configuration of the unfolding and winding device for the sheet-like member will be described. 1 is a schematic plan view showing an unfolding winding device 10 for a sheet-like member 12, FIG. 2 is a partially enlarged plan view of the unfolding winding device 10, and FIG. 3 is a partially enlarged side view of the unfolding winding device 10. is.

It is assumed that the application target of the unfolding take-up device 10 is a window in a vehicle. For example, a rear window is provided behind the vehicle. A mounting panel member (also called a package tray) is provided below the rear window. Frame members (also called pillars) are provided on both sides of the rear window. A ceiling is provided above the rear window. The unfolding take-up device 10 is provided on a portion existing on the outer peripheral side of the rear window, such as a mounting panel member and a frame member. The sheet-shaped member 12 is accommodated on either peripheral side of the rear window. The sheet-like member 12 is pulled out from one of the peripheral edge sides toward the opposite peripheral edge side to cover the rear window. The application target of the present deployment winding device 10 is not limited to the rear window of the vehicle, and may be various windows such as the roof window and the side window of the vehicle.

The unfolding winding device 10 for the sheet-like member 12 includes the sheet-like member 12, the winding shaft 22, the winding device 21, the stay 30, the driving means 50, the locking member 60, and the unlocking member 80. and

The sheet-shaped member 12 is a sheet-shaped member that can be deformed between a rolled state and a flattened state. The sheet-like member 12 is formed in a shape capable of partially or wholly covering the target window. An example of the shape of the sheet-like member 12 is square. The sheet member 12 may be trapezoidal or triangular. The sheet-like member 12 may be formed in a mesh shape, or may be formed in a sheet-like shape in which the portion filled with the contents spreads out in a plane. The sheet-shaped member 12 may be made of resin, or may be made of natural fibers or the like. Here, an example in which the sheet-like member 12 has a square shape will be described. It is assumed that one side portion of the rectangular sheet-like member 12 is the base end 13 and the other side portion opposite to the base end 13 is the tip end 14 .

The winding shaft 22 is non-rotatably fixed to the base end 13 of the sheet-like member 12 . The winding device 21 rotatably supports the winding shaft 22 . The winding device 21 biases the winding shaft 22 in the winding direction, and winds the sheet-shaped member 12 . More specifically, the winding shaft 22 is rotatably supported by a rotation support mechanism 24 of the winding device 21 . The winding shaft 22 is rotationally biased in a predetermined direction by a winding biasing portion 28 . Then, the winding shaft 22 winds the sheet-like member 12 by rotating the winding shaft 22 in the direction urged by the winding force portion 28 . That is, the rotational biasing direction of the winding biasing portion 28 is the winding direction in which the sheet-like member 12 is wound. Further, when the front end 14 of the sheet-like member 12 is pulled against the biasing force of the winding biasing portion 28, the sheet-like member 12 is pulled out from the winding shaft 22 and unfolded in a plane. The window can be covered with the sheet-like member 12 unfolded.

Here, the rotation support mechanism 24 includes a case 25 , brackets 26 and bearings 27 . The case 25 is formed in a long tubular shape along the extending direction of the winding shaft 22 . The case 25 may have a square tube shape, a cylindrical shape, or a shape in which a square tube and a cylinder are combined. A pair of brackets 26 are provided at both ends of the case 25 . A pair of bearings 27 are attached to the pair of brackets 26 . The bearings 27 protrude from the bracket 26 into the case 25 and are fitted to both ends of the winding shaft 22 to rotatably support the winding shaft 22 . The winding force portion 28 is composed of a coil spring, a spiral spring, or the like. One end of the winding force portion 28 is fixed to a non-rotating portion such as the bearing 27 or the bracket 26 . The other end of the winding force portion 28 is fixed to the winding shaft 22 . In the initial state, the winding force portion 28 stores enough force to wind the sheet-like member 12 onto the winding shaft 22 . Therefore, the sheet-like member 12 is kept wound on the winding shaft 22 by the initial winding force. In this state, the sheet-like member 12 wound on the winding shaft 22 is housed inside the case 25 . An elongated slit through which the sheet member 12 can be drawn is formed in a part of the case 25 in the circumferential direction. The sheet-shaped member 12 is pulled out through the slit. The sheet-like member 12 pulled out from the winding shaft 22 can be spread out in a plane.

A rotating support mechanism 24 is provided on either peripheral edge of the window, for example, a mounting panel member below the rear window.

The stay 30 is attached to the tip of the sheet-like member 12 . More specifically, the stay 30 is an elongated rod-shaped member. The stay 30 has the same length as the tip 14 of the sheet-like member 12 or is longer than the tip 14 . The stay 30 is made of, for example, a resin material or a metal material such as aluminum. Here, the entire tip 14 of the sheet-like member 12 is attached to the stay 30 along the stay 30 . The stay 30 may contact the periphery of the slit of the case 25 while the sheet-like member 12 is wound on the winding shaft 22 . This prevents the tip 14 of the sheet member 12 from entering the case 25 .

In this embodiment, the stay 30 is supported by a pair of rails 42 so as to be movable between the retracted position and the deployed position. The retracted position is a position where the stay 30 approaches the rotation support mechanism 24 . The storage position is, for example, the position where the sheet-like member 12 is wound around the winding shaft 22 and the stay 30 is in contact with the slit of the case 25 . The deployed position is a position farther from the rotation support mechanism 24 than the retracted position. The unfolded position is, for example, the position where the sheet member 12 is pulled out from the winding shaft 22 and the stay 30 reaches the edge of the window opposite to the rotation support mechanism 24 (for example, the edge of the ceiling). is.

The pair of rails 42 are formed as long members made of metal or the like. A guide space 44 capable of guiding the end of the stay 30 and the unlocking member 80 is formed inside the rail 42 . In the direction connecting the pair of rails 42 , slits are formed along the extending direction of the rails 42 in the outward portion and the inward portion of each rail 42 . In the following description, the term "outside" may mean the outer side in the direction connecting the pair of rails 42, and the term "inside" may mean the inner side (between) in the direction connecting the pair of rails 42. The end of the stay 30 can move along the extending direction of the rail 42 through the slit on the outside and the slit on the inside of the rail 42 . The pair of rails 42 may extend linearly, or may be curved to the extent that they can movably support the ends of the stay 30 and the unlocking member 80 . Also, the pair of rails 42 are arranged side by side with a space therebetween. The rotation support mechanism 24 is arranged between the base ends of the pair of rails 42 . The leading ends of the pair of rails 42 face away from the rotation support mechanism 24 . The pair of rails 42 may be fixed to the rotation support mechanism 24 via brackets or the like. The pair of rails 42 may not be fixed to the rotation support mechanism 24, but may be fixed to the periphery of the window or the like (e.g., pillars) so as to maintain a fixed posture with respect to the rotation support mechanism 24. . That is, the rotation support mechanism 24 and the pair of rails 42 are supported so as to maintain a constant posture. The support member for that purpose may be a dedicated part for supporting the rotation support mechanism 24 and the pair of rails 42, or a member positioned around the window may be used.

The pair of rails 42 may be in a posture parallel to each other, or may be in a posture that gradually widens or narrows in the direction away from the rotation support mechanism 24 . Here, the pair of rails 42 are parallel to each other.

An unlocking member 80 is supported by the rail 42 so as to be movable along the rail 42 . More specifically, the unlocking member 80 is arranged movably in the guide space 44 in the rail 42 along the extending direction of the rail 42 . The unlocking member 80 can also be grasped as a moving member that travels within the rail 42 . Since the stay 30 and the unlocking member 80 move along the rail 42, which is an example of the guide member, the movement paths of the stay 30 and the unlocking member 80 are stabilized.

The configuration in which the stay 30 and the unlocking member 80 are movably supported along the rail 42 is not limited to the above example. As will be described later, the end of the stay 30 and the unlocking member 80 are connected to each other and can move in the same direction within the rail 42 . Therefore, only one of the end of the stay 30 and the unlocking member 80 may be movably supported by the rail 42 . This configuration also supports the stay 30 so as to be movable along a predetermined path. Also, a hole or groove may be formed in at least one of the stay and the unlocking member. In this case, at least one of the stay and the unlocking member may move along the rail while the guide rail is fitted in the hole or groove.

It is not essential that rails 42 are provided. For example, when the driving means itself includes a structure that extends and retracts from the winding device 21, such as a telescopic structure, and the retractable structure itself moves the unlocking member along a predetermined path, the rail 42 may be omitted.

The driving means 50 is a means for moving the stay 30 along the unfolding and winding direction of the sheet member 12 (here, the extending direction of the rails 42). Here, the drive means 50 is a drive mechanism that reciprocates the pair of unlocking members 80 along the pair of rails 42 . In this embodiment, the driving means 50 includes a wire 52 and a motor 56. As shown in FIG. One end of the wire 52 is fixed to the unlocking member 80 . Since the unlocking member 80 is connected to the stay 30 , the stay 30 can be moved by the forward and backward movement of the wire 52 . A pair of wires 52 are provided corresponding to each of the pair of rails 42 . The wire 52 is guided from the unlocking member 80 through the rail 42 to the base end side of the rail 42 . The wire 52 exits from the base end side of the rail 42 and is guided to a wire driving mechanism 54 provided on the winding device 21 side. Wire drive mechanism 54 includes a motor 56 and a gear mechanism 58 . The motor 56 is an electric motor or the like. The gear mechanism 58 is a mechanism that converts the rotational motion of the motor 56 into linear motion along the extending direction of the wire 52 . A rack-and-pinion mechanism, a worm gear mechanism, or the like can be employed as the gear mechanism. In the case of a rack-and-pinion mechanism, the wire 52 may be formed with rack teeth and a pinion gear may be attached to the motor shaft. In the case of a worm gear mechanism, the wire 52 may be a worm gear formed with a helical gear, and a disk-shaped helical gear may be attached to the motor shaft. The two wires 52 may be driven by one common motor 56 or may be driven by separate motors 56 .

The driving means 50 is not limited to the above example. For example, an elongated guide portion corresponding to the rail and a moving member connected to the unlocking member and moving along the guide portion may be configured as a linear actuator. As such a linear actuator, for example, a linear motor, an electric cylinder, a fluid cylinder, or the like can be adopted. An example in which the linear actuator is a shaft motor, which is a type of linear motor, will be described later in Modifications. The electric cylinder may include a screw shaft as a guide portion and a nut screwed onto the screw shaft as a moving member, and may adopt a configuration in which the screw shaft is rotated by a motor to move the nut along the screw shaft.

The locking member 60 is provided at a position away from the winding device 21 in the unfolding direction of the sheet-like member 12 . Here, the pair of locking members 60 are provided at the respective tip end portions of the pair of rails 42 . Then, with the sheet-like member 12 unfolded, the locking member 60 is locked to the stay 30 in a biased state.

The unlocking member 80 is provided movably with respect to the stay 30 while being connected to the driving means 50 . The movement range of the unlocking member 80 with respect to the stay 30 is a constant range in the movement direction of the stay 30 (the unfolding and winding direction of the sheet-like member 12 or the extending direction of the rails 42). A driving force by the driving means 50 is transmitted to the stay 30 via the unlocking member 80 . While the stay 30 is locked to the locking member 60 , the driving means 50 moves the stay 30 in the winding direction of the sheet-like member 12 via the unlocking member 80 . At this time, the unlocking member 80 moves relative to the stay 30 before the stay 30 moves, thereby releasing the state in which the locking member 60 is locked to the stay 30 . This allows the stay 30 to move in the winding direction.

In the unfolding winding device 10 for the sheet-like member 12 , the sheet-like member 12 is unfolded by the driving means 50 . The stay 30 is locked to the locking member 60 while the sheet-like member 12 is unfolded. As a result, the sheet-like member 12 is maintained in the unfolded state. When the sheet-like member 12 is wound up, the driving means 50 moves the stay 30 in the winding direction. At this time, the unlocking member 80 moves the locking member 60 to release the locked state between the stay 30 and the locking member 60 . This allows the stay 30 to move in the winding direction. When the driving means 50 moves the stay 30 in the winding direction, the sheet-like member 12 is wound by the winding device 21 .

<Construction for maintaining the sheet-shaped member in the unfolded state>
A configuration for keeping the sheet member 12 in the unfolded state and releasing the unfolded state will be described with reference to FIGS. 2 to 10. FIG. 4 to 10 are explanatory diagrams showing the operation of the end portion of the stay 30 and the locking member 60. FIG. 4 to 7 show the operation of locking the end of the stay 30 to the locking member 60. FIG. FIGS. 8 to 10 show the movement of the end of the stay 30 to release the engagement with the engagement member 60 and move in the winding direction. Note that the rails 42 are omitted in FIGS. 3 to 10 .

First, the end of the stay 30 is formed as a protrusion 32 that protrudes outward from the rail 42 . A portion of the projecting portion 32 on the deployment direction side is formed on a guide surface 33 that faces in the winding direction as it goes outward in the extension direction of the stay 30 . Here, the guide surface 33 is formed into a curved surface that protrudes outward. A portion of the projecting portion 32 on the winding direction side is formed as a contact surface 33f orthogonal to the unfolded winding direction.

A connection projection 34 projecting in the winding direction is provided on a portion of the stay 30 that passes through the rail 42 . The connecting protrusion 34 is formed with a connecting holding concave portion 35 that is open to the winding direction side and to the outside of the pair of rails 42 . A retaining protrusion 35a is formed in a portion of the connection holding recess 35 on the winding direction side.

The unlocking member 80 is a member made of resin or the like, and is arranged in the guide space 44 of the rail 42 closer to the winding direction than the connecting protrusion 34 . The unlocking member 80 includes a wire connecting portion 82 and a stay connecting portion 84 . The wire 52 is connected to the wire connecting portion 82 . The wire connecting portion 82 is connected to the end of the wire 52 by, for example, clamping the end of the wire 52 .

The stay connecting portion 84 is integrated with the wire connecting portion 82 on the stay 30 side. The stay connecting portion 84 includes a plate-like portion arranged inside the connecting holding recess 35 . With the stay connecting portion 84 disposed in the connection holding recess 35 , the wire connecting portion 82 side portion of the unlocking member 80 extends in the winding direction with respect to the connecting protrusion 34 . . A main surface of the stay connecting portion 84 is provided with a protrusion 84a that can be locked from the stay 30 side with respect to the retaining protrusion 35a. The unlocking member 80 is movably connected to the stay 30 between a first position and a second position. The first position is the position on the deployment direction side (see FIGS. 4 to 7). At this position, the protrusion 84a of the stay connecting portion 84 is in contact with the surface of the connecting holding recess 35 facing the winding direction. The second position is closer to the winding direction than the first position (see FIG. 10). At this position, the protrusion 84a abuts against the retainer protrusion 35a from the stay 30 side. Here, the stay 30 is provided above the unlocking member 80 . Therefore, the stay 30 is pushed toward the unlocking member 80 by gravity. That is, in the normal state, the unlocking member 80 is positioned at the first position with respect to the stay 30 . A biasing member may be provided that biases the unlocking member 80 toward the first position in the normal state. A coil spring, a plate spring, or the like may be employed as the biasing member.

The unlocking member 80 includes a pushing portion 88 for pushing the locking member 60 . Here, the pressing portion 88 is provided so as to protrude outward from the stay connecting portion 84 . The pushing portion 88 projects outward from the rail 42 and moves along the rail 42 together with the stay connecting portion 84 and the wire connecting portion 82 . Here, the portion of the front end portion of the pressing portion 88 on the deployment direction side is formed on a guide surface 88b that faces toward the winding direction side as it extends outward (outward with respect to the pair of rails 42). A portion of the leading end portion of the pressing portion 88 on the winding direction side is formed as a guide surface 88a directed toward the unfolding direction side as it extends outward (outward with respect to the pair of rails 42). Here, the guide surfaces 88a and 88b are formed as curved surfaces that are convex outward. In this embodiment, the guide surfaces 88 a and 88 b at the tip of the pressing portion 88 describe a semi-cylindrical circumferential surface whose center of curvature is the axis orthogonal to the pair of rails 42 . Here, the pressing portion 88 protrudes outward (to the side of the locking member 60 ) to a greater extent than the protruding portion 32 of the stay 30 .

In this example, the unlocking member 80 is directly supported on the stay 30 . The unlocking member may be indirectly movably supported with respect to the stay via another member.

The locking member 60 is arranged at a position away from the winding device 21 . Here, the locking member 60 is supported by the distal end portion of the rail 42 via the movable support portion 70 .

The movable support portion 70 is a member made of resin or the like. A distal end portion of the movable support portion 70 is supported by the distal end portion of the rail 42 , and a proximal end portion of the movable support portion 70 is supported at a position separated from the distal end portion of the rail 42 toward the proximal end side. Therefore, a gap is provided between the outward portion of the rail 42 and the movable support portion 70 on the tip side of the rail 42 .

A support recess 72 that opens toward the rail 42 is formed in the movable support portion 70 . The locking member 60 is arranged in the support recess 72 so as to be supported so as to move forward and backward relative to the rail 42 . A regulation opening 74 is formed in a portion of the movable support portion 70 that serves as both side walls of the support recess 72 .

The locking member 60 is movably supported between a locking position and a locking release position by a movable support portion 70 . The locking position is a position where the locking member 60 can be locked to the stay 30, and is a position where the movable support portion 70 has moved toward the stay 30 (FIGS. 4, 6, 7, 8, See Figure 10). The unlocked position is a position where the locking member 60 can be unlocked from the stay 30, and is a position away from the stay 30 and moved outward with respect to the movable support portion 70 (FIGS. 5 and 9). reference). Here, a protrusion 61 is formed in a portion of the locking member 60 corresponding to the regulation opening 74 . At the locking position, the protrusion 61 contacts the edge of the regulation opening 74 on the rail 42 side. In this state, the locking member 60 is prevented from slipping out of the support recess 72 toward the rail 42 . At the unlocked position, the protrusion 61 is located on the opposite side from the edge of the regulation opening 74 on the side of the rail 42 . As described above, the unlocking position is a position where the locking between the locking member 60 and the stay 30 can be released. Therefore, the unlocking position is such that the locking member 60 is outside the rail 42 so that the projecting portion 32 of the stay 30 and the locking portion 64 described later do not overlap each other in the extending direction of the stay 30 . You may grasp as a state located in either.

The locking member 60 is biased from the unlocked position toward the locked position. Here, locking member 60 is biased by biasing member 68 . More specifically, the locking member 60 is formed with a biasing recess 62 that opens to the far side of the support recess 72 (the outward side of the rail 42). The biasing member 68 is a coil spring, and the biasing member 68 is compressed in the biasing recess 62 between the inner part of the support recess 72 and the inner part of the biasing recess 62 . The biasing force of the biasing member 68 biases the locking member 60 toward the locking position. The biasing member may be a leaf spring or the like.

The locking member 60 is a member made of resin or the like, and includes a locking portion 64 and a contact portion 66 . The engaging portion 64 is provided on the unfolding direction side of the engaging member 60 , and the contact portion 66 is provided on the winding direction side of the engaging member 60 . The locking portion 64 is a portion that locks the stay 30 . Here, the surface of the locking portion 64 on the deployment direction side is formed as a receiving surface 64a orthogonal to the deployment winding direction. When the protruding portion 32 of the stay 30 exceeds the contact portion 66 in the deployment direction, the contact surface 33f of the protruding portion 32 faces the receiving surface 64a and becomes in a contactable state. A surface of the locking portion 64 on the winding direction side is formed as a guide surface 64 b that gradually extends toward the inner side of the rail 42 in the unfolding direction.

The contact portion 66 is a portion that contacts the pressing portion 88 of the unlocking member 80 . Here, the portion of the contact portion 66 on the development direction side is formed on a guide surface 66a that faces toward the winding direction side as it extends toward the inner side (the side between the pair of rails 42). A portion of the contact portion 66 on the take-up direction side is formed as a guide surface 66b that faces toward the development direction side as it goes toward the inside (the side between the pair of rails 42). For this reason, the contact portion 66 is formed in a shape in which the projecting dimension becomes smaller while gently curving from the most projecting portion toward the unfolding direction and the winding direction. Here, the contact portion 66 protrudes inward to a greater extent than the locking portion 64 .

Guide surfaces 88a and 88b at the tip of the pressing portion 88 project arcuately toward the contact portion 66, and guide surfaces 66a and 66b of the contact portion 66 project arcuately so as to face the guide surfaces 88a and 88b. Therefore, the unlocking member 80 can smoothly move in the unfolding and winding direction while the pressing portion 88 and the contact portion 66 rub against each other.

When the stay 30 moves in the winding direction, the locking member 60 is pushed outward by the unlocking member 80 and moves to the outer unlocking position against the biasing force of the biasing member 68 . Thereby, the locking member 60 releases the locking of the stay 30 .

A concave portion 65 is formed between the locking portion 64 and the contact portion 66 . Here, the recessed portion 65 is formed in a shape that is gently curved and recessed. The recessed portion 65 is formed to have a size that allows the pressing portion 88 to be disposed therein. The pressing portion 88 is arranged in the concave portion 65 while the stay 30 is locked to the locking portion 64 .

A configuration for locking the stay 30 to the locking member 60 will be described.

When the sheet member 12 is rolled up and stored, the locking member 60 is positioned at the locking position by the biasing force of the biasing member 68 . Due to the winding force of the winding device 21 , the unlocking member 80 is positioned at the second position in the winding direction with respect to the stay 30 . For example, when the storage position of the stay 30 is determined by the drive means 50 , the unlocking member 80 is positioned at the first position on the deployment direction side with respect to the stay 30 .

When the sheet member 12 is deployed, the unlocking member 80 is moved in the deployment direction along the rails 42 by the driving force of the driving means 50 . At this time, the stay 30 approaches the unlocking member 80 due to the weight of the stay 30 and the winding force of the winding device 21 . Therefore, the unlocking member 80 is positioned at the first position on the deployment direction side with respect to the stay 30 . Since the unlocking member 80 is connected to the stay 30 , the driving force of the driving means 50 is transmitted to the stay 30 via the unlocking member 80 . Therefore, the stay 30 also moves in the deployment direction. Thereby, the sheet-like member 12 is also pulled out.

As shown in FIG. 4, the stay 30 approaches the locking member 60 on the tip side of the rail 42 . Then, the guide surface 33 of the projecting portion 32 of the stay 30 comes into contact with the guide surface 66b of the contact portion 66. As shown in FIG. When the stay 30 moves further in the deployment direction, the projecting portion 32 pushes the contact portion 66 outward, so that the locking member 60 moves toward the unlocked position. After the projecting portion 32 has passed over the contact portion 66 in the deployment direction, the pressing portion 88 contacts the contact portion 66 as shown in FIG. The projecting portion 32 of the stay 30 passes the lateral position of the locking portion 64 while the locking member 60 is moved to the unlocked position by the pushing portion 88 pushing the contact portion 66 outward.

That is, when the sheet member 12 is deployed, the unlocking member 80 is positioned at the first position, and the stay 30 and the unlocking member 80 lock the locking member 60 against the biasing force. Push towards the release position. As a result, the projecting portion 32 of the stay 30 can easily pass over the locking portion 64 in the deployment direction.

As shown in FIG. 6, the projecting portion 32 of the stay 30 exceeds the locking portion 64 in the deployment direction, and the pressing portion 88 also exceeds the contact portion 66 in the deployment direction. Then, the locking member 60 is pushed inward by the biasing force of the biasing member 68 to return to the locking position. As a result, the contact surface 33f of the projecting portion 32 of the stay 30 faces the receiving surface 64a of the locking portion 64 of the locking member 60, so that the stay 30 and the locking member 60 can be locked. It should be noted that the locked state between the stay and the locking member may be established by the projecting portion of the stay pushing the locking member at the time of deployment, and the pressing portion of the unlocking member may push the locking member. is not required.

From this state, it is preferable that the unlocking member 80 is (slightly) moved in the winding direction by driving the driving means 50 as shown in FIG. In FIG. 7, the unlocking member 80 is moved in the winding direction with respect to the stay 30 by a distance L1, which is such that the pressing portion 88 contacts the contact portion 66 but does not push the locking member 60 . shown. The unlocking member 80 is positioned between the first position and the second position. Thereby, the stay 30 is more reliably locked to the locking member 60 . The stay 30 is less likely to rattle with respect to the locking member 60, and the generation of sound is suppressed. Further, even if the stay 30 is pushed in the winding direction, the force is difficult to be transmitted to the wire driving mechanism 54 via the unlocking member 80 and the wire 52 . As a result, damage to the wire driving mechanism 54 is suppressed. Further, during winding, the locking member 60 can be moved toward the unlocking position as soon as the unlocking member 80 starts moving in the winding direction.

Thus, the state in which the stay 30 is locked by the locking member 60 is the state in which the sheet-like member 12 is kept in a predetermined unfolded state.

When the sheet-like member 12 is wound, the unlocking member 80 is further moved in the winding direction by the drive means 50 . As shown in FIG. 8, since the stay 30 is locked to the locking member 60, when the wire 52 pulls the unlocking member 80, the unlocking member 80 is wound while the stay 30 remains stopped. move in the picking direction. Then, as shown in FIG. 9, the unlocking member 80 moves toward the second position with respect to the stay 30 . At this time, the pressing portion 88 contacts the contact portion 66 of the locking member 60 and pushes the locking member 60 toward the unlocked position against the biasing force of the biasing member 68 . As a result, the engagement between the projecting portion 32 of the stay 30 and the engaging portion 64 of the engaging member 60 is released.

When the engagement between the stay 30 and the engagement portion 64 is released, it is preferable that the engagement member 60 continues to move toward the unlocked position. Further, after the engagement between the stay 30 and the engagement portion 64 is released, the engagement member 60 further moves toward the engagement release position until the engagement release member 80 moves further in the winding direction to some extent. is preferred. In the present embodiment, when the lock release member 80 further advances in the winding direction after the lock between the stay 30 and the lock portion 64 is released, the pressing portion 88 moves from the top of the contact portion 66 (most protruded). part). This realizes the above two preferred aspects and ensures the unlocking.

When the driving means 50 further moves the unlocking member 80 in the winding direction, the unlocking member 80 moves the stay 30 in the winding direction. Then, the projecting portion 32 of the stay 30 exceeds the locking portion 64 in the winding direction. At this time, the pressing portion 88 also passes over the contact portion 66 in the winding direction. Since the contact portion 66 is formed in a shape in which the projecting dimension becomes smaller while gently curving in the deployment direction and the winding direction from the most projecting portion, the projecting portion 32 itself pushes the contact portion 66 to make contact. The portion 66 can be passed over in the winding direction. Therefore, after the projecting portion 32 of the stay 30 exceeds the locking portion 64 of the locking member 60 in the winding direction, as shown in FIG. It can move in the winding direction with respect to the locking member 60 . When the driving means 50 moves the stay 30 to the winding device 21 side, the sheet-like member 12 is wound by the winding device 21 and is put into a storage state.

According to the unfolding winding device 10 for the sheet-like member 12 configured in this manner, the engaging member 60 is engaged with the stay 30 in a biased state while the sheet-like member 12 is unfolded. Further, when the drive means 50 moves the stay 30 in the winding direction of the sheet-like member 12, the unlocking member 80 moves with respect to the stay 30 before the stay 30 moves, and the locking member The state in which the 60 is locked to the stay 30 is released. Therefore, the driving means 50 can move the stay 30 in the winding direction. As a result, the sheet-like member 12 can be kept in the unfolded state without depending on the driving means for unfolding the sheet-like member 12 .

Even if the stay 30 is pushed in the winding direction, the force is received by the locking member 60 that locks the stay 30 . Therefore, the force is less likely to be transmitted to the wire 52, the gear mechanism 58, the motor 56, and the like. As a result, damage or the like to the driving means 50 is suppressed.

Further, the unlocking member 80 pushes the locking member 60 via the contact portion 66 . As a result, the locking member 60 moves against the biasing force of the biasing member 68 to release the locking of the stay 30 . Since the abutting portion 66 and the locking portion 64 are separately provided, it is easy to set the structure for locking and the structure for pushing and moving the locking member 60 to suitable structures respectively. As a result, locking and unlocking operations can be improved.

In addition, the pressing portion 88 is arranged in the concave portion 65 between the contact portion 66 and the locking portion 64 in a state in which the sheet-like member 12 is unfolded. Therefore, the pressing portion 88 can smoothly press the contact portion 66 during winding. In particular, if the pressing portion 88 is kept in contact with the contact portion 66 in the unfolded state, the locking member 60 is immediately moved to the unlocking position when the unlocking member 80 starts moving in the winding direction during winding. can be moved towards

It is not essential that the pressing portion 88 is arranged in the recess 65 while the sheet-like member 12 is unfolded. For example, the locking portion and the contacting portion of the locking member may be provided at the same position in the unfolding and winding direction and dispersed around the rail. In this case, when the sheet-shaped member 12 is unfolded, the position where the stay abuts against the engaging portion and the standby position of the pressing portion may be dispersed around the rail at approximately the same position in the unfolding and winding direction.

Further, when the sheet member 12 is deployed, the unlocking member 80 is positioned at the first position, and at least one of the stay 30 and the unlocking member 80 pushes the locking member 60 against the urging force. Push towards the unlocked position. With the sheet-shaped member 12 unfolded, the locking member 60 is pushed by the biasing force to be positioned at the locking position and locked to the stay. When the sheet-like member 12 is wound, the unlocking member 80 moves toward the second position, thereby pushing the locking member 60 toward the unlocking position against the urging force, thereby releasing the lock. The state in which the stop member 60 and the stay 30 are locked is released. Therefore, the movement of the unlocking member 80 and the locking member 60 allows the sheet member 12 to be smoothly unfolded and wound up.

FIG. 11 is a plan view showing an unfolding winding device 110 for the sheet-like member 12 according to the modification. In this unfolding take-up device 110 , drive means 150 corresponding to drive means 50 includes a linear drive mechanism 142 . Linear drive mechanism 142 is, for example, a linear motor. Here, an example is disclosed in which the linear drive mechanism 142 is a shaft motor, which is a type of linear motor. Linear drive mechanism 142 includes shaft 144 and movable portion 146 . The shaft 144 is an elongated member in which a plurality of permanent magnets are joined at their N poles and at their S poles. Movable portion 146 includes a coil that surrounds shaft 144 . When the coil is energized by the control unit, a magnetic force is generated. The magnetic force of the coil and the magnetic force of the shaft 144 generate thrust to move the movable portion 146 along the extension direction of the shaft 144 . A movable support portion 70 is supported at the tip of the shaft 144 , and the locking member 60 is supported by the movable support portion 70 .

The unlocking member 180 corresponding to the unlocking member 80 and the stay 130 corresponding to the stay 30 are formed with holes through which the shaft 144 can pass. The movable portion 146 is connected to the unlocking member 180 . The unlocking member 180 is reciprocated along the shaft 144 by reciprocating the movable portion 146 along the shaft 144 . As a result, the stay 130 can move in the unfolding direction and the winding direction as in the above embodiment. Therefore, the deployment winding device 110 according to this modified example can also perform deployment and winding operations in the same manner as in the above-described embodiment.

The significance of using the linear driving mechanism 142 as the driving means 150 as in this modified example will be described.

That is, in the embodiment, when a gear mechanism or the like is used as the driving means 50, it is expected that the sheet-like member 12 is kept in the unfolded state by the gear mechanism itself. However, when the linear driving mechanism 142, particularly a linear motor such as a shaft motor, is used as the driving means 50, the shaft 144 and the movable portion 146 are separate bodies. When the coil of the moving part 146 is energized, the magnetic force may cause the moving part 146 to move relative to the shaft 144 and may be held in a fixed position. However, when the power is turned off and current does not flow through the coil, the movable portion 146 can move freely in the direction in which the shaft 144 extends. That is, when the power is turned off while the sheet-like member 12 is unfolded, the movable portion 146 moves downward along the shaft 144 due to its own weight. Therefore, the sheet member 12 cannot be maintained in the unfolded state.

In this modification, an unlocking member 180 separate from the stay 130 is connected to the stay 130 to which the tip of the sheet-like member 12 is attached. The force from the linear drive mechanism 142 acts only on the unlocking member 180 , and the stay 130 follows the movement of the unlocking member 180 . Further, the stay 130 is locked to the locking member 60 in the deployed state, and the lock between the stay 130 and the locking member 60 is released by the movement of the unlocking member 180 .

Therefore, when the movable portion 146 is energized to deploy the sheet member 12, the movable portion 146 and the unlocking member 180 move along the shaft 144, and the stay 130 moves along the shaft 144 as described in the above embodiment. is locked to the locking member 60 . In this state, even if the current to the movable portion 146 is cut off, the stay 130 is kept locked to the locking member 60. Therefore, regardless of the weight of the stay 130 and the winding force, the sheet-like member 12 is kept expanded. At this time, the unlocking member 180 contacts the guide surface 66a of the contact portion 66 of the locking member 60 from the deployment direction side, so the movable portion 146 remains at that position.

Then, when the movable portion 146 is energized to wind the sheet-like member 12, the movable portion 146 and the unlocking member 180 move along the shaft 144, and as described in the above embodiment, the unlocking member 180 moves. Member 180 moves locking member 60 to the unlocked position. As a result, the engagement between the stay 130 and the engagement member 60 is released, and the movable portion 146 and the engagement release member 180 can move together with the stay 130 in the winding direction. Thereby, the sheet-like member 12 is wound up by the winding device 21 .

Therefore, according to this modification, even in the configuration using the linear drive mechanism 142, the sheet-like member 12 can be kept in the unfolded state. Similar to the drive means 50 using a gear mechanism or the like, even if an external force acts on the sheet-like member 12 in the winding direction, the stay 130 is locked with the locking member 60 to restrict movement in the winding direction. be done. Therefore, free movement of the movable portion 146 is restricted, and damage to the linear drive mechanism 142 is also suppressed.

It should be noted that the configurations described in the above embodiment and modifications can be appropriately combined as long as they do not contradict each other.

Although the present invention has been described in detail as above, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that numerous variations not illustrated can be envisioned without departing from the scope of the invention.

Reference Signs List 10, 110 deployment winding device 12 sheet-like member 13 base end 14 tip end 21 winding device 30, 130 stay 32 projecting portion 42 rail 50 driving means 60 locking member 64 locking portion 66 contacting portion 68 biasing member 80, 180 unlocking member 88 pushing portion 142 linear drive mechanism 144 shaft 146 movable portion

Claims (5)

a sheet-like member;
a winding shaft fixed to the base end of the sheet-like member;
a winding device that rotatably supports the winding shaft and biases the sheet-shaped member in a winding direction to wind the sheet-shaped member;
a stay attached to the tip of the sheet-like member;
a driving means for moving the stay along the unfolding and winding direction of the sheet-shaped member;
a locking member provided at a position spaced apart from the winding device in the unfolding direction of the sheet-like member, and locking the stay in a biased state when the sheet-like member is unfolded;
It is movable with respect to the stay while being connected to the drive means, and when the drive means moves the stay in the winding-up direction of the sheet-like member, before the stay moves, the an unlocking member that moves with respect to the stay to release the state in which the locking member is locked to the stay;
A deployment winding device for a sheet-shaped member. The unfolding winding device for a sheet-shaped member according to claim 1,
The locking member includes a locking portion that locks with the stay and a contact portion that contacts the unlocking member,
The unfolding and winding device for a sheet-like member, wherein the locking member is pushed by the unlocking member to move against the urging force to release the lock on the stay. The unfolding winding device for a sheet-shaped member according to claim 2,
forming a concave portion between the locking portion and the contact portion;
The unlocking member includes a pushing portion for pushing the locking member,
An unfolding winding device for a sheet-like member, wherein the pressing portion is disposed in the recess while the stay is locked to the locking portion. The unfolding and winding device for a sheet-like member according to any one of claims 1 to 3,
the unlocking member is movable between a first position on the stay in the sheet-like member deployment direction and a second position in the sheet-like member winding direction;
The locking member is movable between a locking position where it can be locked to the stay and an unlocked position where it can be unlocked from the stay. biased toward the stop position,
When the sheet member is deployed, the unlocking member is positioned at the first position, and at least one of the stay and the unlocking member pushes the locking member against the biasing force. push towards the unlocked position,
When the sheet-shaped member is deployed, the locking member is pushed by an urging force to be positioned at the locking position and locked to the stay,
When the sheet-shaped member is wound, the unlocking member moves toward the second position, thereby moving the locking member toward the unlocking position against the biasing force. An unfolding winding device for a sheet-like member that is pushed to release the locked state between the locking member and the stay. The unfolding winding device for a sheet-like member according to any one of claims 1 to 4,
The drive means includes a linear drive mechanism.

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