JP2017133293A - Blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve assembly workability of a stopper for regulating winding of an operation member.SOLUTION: A blind comprises an operation unit for lifting a shielding material. The operation unit comprises an operation case for storing a freely rotatable pulley, a winding member for windably and unwindably connecting one end to the pulley, a spring for energizing in the direction for always winding the winding member on the pulley or the direction for unwinding from the pulley, a stopper for regulating winding of a predetermined quantity or more to the pulley of the winding member, and a gripping member suspended by being connected to the winding member by the stopper. The stopper comprises a stopper body 60 for connecting the winding member and a stopper cover 50 for storing the stopper body, and the stopper is also provided so as to be capable of switching an unstorable state of not storing at least a part of the stopper body in the stopper cover against energization force of an energization member and a storage state of storing the stopper body in the stopper cover by the energization force of the energization member.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a blind.

  Conventionally, the blind has been provided with an operating device (operating unit) for performing a lifting operation of the shielding material. In Patent Document 1 below, an operation unit for raising and lowering the shielding material includes a rotatable pulley, an operation member connected to the pulley so that one end can be wound and unwound, and the operation member is always wound on the pulley. And a stopper that restricts winding of the operating member around the pulley by a predetermined amount, and the operator can grip the suspended portion of the operating member whose winding is restricted by the stopper. Disclosed as a grip portion.

  According to this, since the pulley can wind up the operation member by the biasing force of the spring during non-operation, the operation member can be made compact, and the occupant is not in a loop shape. It can prevent being caught. Further, since the operation of the operation member is always limited to the direction in which the operation member is unwound from the pulley, the operator can operate without hesitation of the operation direction. Further, by restricting the amount of winding of the operation member around the pulley by the stopper, there is a feature that it is possible to prevent the operation member from being excessively wound around the pulley and the operator's hand from reaching the operation member.

JP 2006-241893 A

  On the other hand, in the technique disclosed in Patent Document 1, the stopper is provided at the knot between the winding cord of the operating member and the gripping cord, and stores the knot between the lower end of the winding cord and the upper end of the gripping cord. And is configured to have a larger diameter than the cord. More specifically, the stopper includes a stopper main body having a storage portion and a stopper cover for inserting the stopper main body so that the knot does not come off the storage portion.

  However, when connecting the gripping cord to the winding cord, a cord having a length corresponding to the product size is prepared as the gripping cord, and it is necessary to remove the stopper main body from the stopper cover in order to connect the cords. However, since an urging force always acts on the winding cord in the direction of winding the cord by the urging member, it is necessary to work while pulling the winding cord against the urging force. If the operator releases his hand from the winding cord before making a knot, all the winding cord is wound around the pulley by the biasing force of the biasing member. Had to reassemble the entire operation case, and there was a problem in workability.

  Therefore, in order to improve workability, if the operation case is assembled in the state where the knot of the winding cord is accommodated in the stopper body in advance and the knot of the gripping cord is accommodated later, the winding cord is wound up. The winding can be restricted by the stopper even if it is stopped. However, as described above, the stopper body in which the winding cord is accommodated is subjected to a force that moves toward the stopper case, and the stopper body is removed from the stopper case when the knot of the gripping cord is accommodated in the stopper body. In this case, the stopper main body must be removed against the urging force in the winding direction of the cord by the urging member, and there is still a problem in the work.

  In view of the circumstances as described above, an object of the present invention is to provide a blind capable of improving the assembling workability of a stopper that restricts winding of an operation member.

  In order to achieve the above object, a blind according to an aspect of the present invention includes a shielding material and an operation unit that raises and lowers the shielding material in accordance with a user's lifting operation. The operation unit includes an operation case that houses a rotatable pulley, a winding member having one end coupled to the pulley so as to be wound and unwound, and a direction in which the winding member is always wound around the pulley or the above A spring that urges the pulley in the direction of unwinding, a stopper that restricts winding of the winding member to the pulley by a predetermined amount, and the stopper is connected to the winding member by the stopper and hangs down from the operation case. And a gripping member. The stopper includes a stopper main body to which the winding member is coupled, and a stopper cover that houses the stopper main body. Further, the stopper has a non-accommodating state in which at least a part of the stopper main body is not accommodated in the stopper cover against the urging force of the urging member, and the stopper main body is moved to the stopper cover by the urging force of the urging member. It is provided so as to be switchable between the housed state housed in the housing.

  According to this configuration, the stopper of the blind can be switched to a non-accommodating state in which at least a part of the stopper body is not accommodated in the stopper cover against the urging force of the urging member. In this state, it is possible to perform the operation of connecting the gripping member to the stopper, and the assembling workability is improved.

  The stopper cover may have a convex portion on an inner peripheral surface having a shape corresponding to the surface of the stopper main body, and the stopper main body may have a concave portion capable of accommodating the convex portion on the surface. Good. In this case, the stopper forms the non-accommodating state when a surface other than the concave portion of the stopper main body abuts against the convex portion against the biasing force, and the concave portion of the stopper main body and the convex portion are formed. You may form the said accommodation state by engaging.

  Thereby, unless the convex part and the concave part engage with each other, the non-accommodating state in which at least a part of the stopper main body is not accommodated in the stopper cover can be formed against the urging force of the urging member. Here, contrary to the above, a concave portion may be formed in the stopper cover, and a convex portion may be formed in the stopper body.

  The convex portion may be formed at an end portion on the winding member side of the inner peripheral surface of the stopper cover, and the concave portion is an end portion on the winding member side of the surface of the stopper body. May be formed.

  Thereby, since a non-accommodating state is formed in a state in which a part of the stopper main body (a part closer to the gripping member than the end) is accommodated in the stopper cover, the non-accommodating state can be stably maintained, The workability of the operator can be improved.

  The stopper cover may have a rib protruding from the inner peripheral surface, and the stopper main body is moved to the surface when the surface other than the concave portion comes into contact with the convex portion. You may have a guide groove which guides.

  Thereby, a part of stopper main body can be easily accommodated in a stopper cover, and a non-accommodating state can be formed because a rib is guided by a guide groove.

  The surface of the stopper body may have an opening that opens to accommodate each end of the winding member and the gripping member, and the recess faces the opening in the stopper body. It may be formed at a position.

  Thereby, in the stopper main body, since the concave portion is formed on the opposite side where the influence by the formation of the opening is the smallest, the stopper main body can be made compact while maintaining the strength as a member of the stopper main body. In addition, since the opening is formed on the side opposite to the recess, the opening can be used as a mark when the operator aligns the position where the recess and the protrusion engage.

  As described above, according to the present invention, it is possible to improve the assembly workability of the stopper that restricts the winding of the operation member. However, this effect does not limit the present invention.

It is a perspective view of a blind concerning one embodiment of the present invention. It is a partial permeation | transmission front view of the said roll screen. It is sectional drawing of the side surface direction of the operation unit of the said roll screen. It is a perspective view of the stopper cover of the stopper which the said roll screen has. It is a perspective view of the stopper main body of the stopper which the said roll screen has. It is a perspective view of the stopper which the said roll screen has. It is a fragmentary sectional view of the stopper which the above-mentioned roll screen has. It is AA sectional drawing and BB sectional drawing of FIG. It is sectional drawing of the operation unit of the said roll screen in the state where the holding | grip cord is not connected. It is the perspective view which showed the mode of the screen raising / lowering operation | movement of the said roll screen. It is the perspective view which showed the mode of the screen raising / lowering operation | movement of the said roll screen. It is the perspective view which showed the mode of the screen raising / lowering operation | movement of the said roll screen. It is the perspective view which showed the mode of the screen raising / lowering operation | movement of the said roll screen. It is the perspective view which showed the mode of the screen raising / lowering operation | movement of the said roll screen. It is the perspective view which showed the mode of the screen raising / lowering operation | movement of the said roll screen. It is the perspective view which showed the mode of the screen raising / lowering operation | movement of the said roll screen. It is sectional drawing before and behind operation of the operation unit of the said roll screen. It is sectional drawing of the operation unit which shows a mode that a grip cord is connected with the winding cord of the said roll screen. It is sectional drawing of the operation unit which shows a mode that a grip cord is connected with the winding cord of the said roll screen.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Roll screen configuration]
FIG. 1 is a perspective view of a roll screen as a blind according to the present embodiment. FIG. 2 is a partially transparent front view of the roll screen.

  As shown in these drawings, the roll screen 100 according to this embodiment includes a support member 1, a screen 2, a winding pipe 3, and an operation unit 4.

  As shown in both drawings, the support member 1 supports the winding pipe 3 in a rotatable manner. As shown in FIG. 2, the support member 1 has a set frame 11. The support frame 1 is installed by fixing the set frame 11 to a predetermined surface such as a window frame or a wall via a bracket 1b. A pair of side plates 1 a are attached to both side surfaces of the set frame 11.

  As shown in FIG. 1, the winding pipe 3 is rotatably supported at both ends by a pair of side plates 1 a in front of the set frame 11. On the other hand, as shown in FIG. 2, by changing the support angle of the take-up pipe 3 with respect to the pair of side plates 1a, the take-up pipe 3 is held at both ends by the pair of side plates 1a below the set frame 11. It is rotatably supported. The change of the support angle of the winding pipe 3 is appropriately selected according to the fixing method to the window frame, the wall or the like. One end of the take-up pipe 3 (the right side in both figures) is pivotally supported by a support shaft 30 extending from the side plate 1a to the inside of the take-up pipe 3.

  The screen 2 functions as a shielding material, one end of the screen 2 is connected to the winding pipe 3, and the screen 2 is suspended so as to be wound and unwound.

  A weight bar 5 is attached to the lower end of the screen 2. The lower end of the screen 2 is fixed inside the weight bar 5, but the lower end may be sewn around the weight bar 5.

  A winding spring 31 is accommodated in the winding pipe 3. One end of the winding spring 31 is indirectly fixed to the side plate 1 a on the left side of both drawings, and the other end is wound through the first brake 32. It is fixed to the pipe 3.

  When the take-up pipe 3 is rotated in the unwinding direction of the screen 2, the other end of the take-up spring 31 rotates integrally with the take-up pipe 3 and is stored, and the take-up pipe 3 rotates in the take-up direction. Is allowed, the take-up pipe 3 is rotated in the take-up direction by the stored force of the take-up spring 31, and the screen 2 is taken up while being always decelerated by the first brake.

  Further, a second brake 33 for reducing the winding speed of the screen 2 from the final winding stage of the screen 2 is provided in the winding pipe 3. The second brake 33 is indirectly fixed to the side plate 1 a on the right side of both drawings via the operation unit 4.

  The first brake 32 operates continuously from the initial stage of winding of the screen 2, whereas the second brake 33 functions as an auxiliary brake for the first brake in the final stage of winding. That is, with the first brake 32 alone, the screen winding speed increases at the final stage of winding the screen 2, and the impact sound and impact force by the weight bar 5 become excessive when fully wound. In the final stage of winding, the second brake 33 is operated to decelerate the winding pipe 3, thereby reducing the impact sound and the impact force.

  The first clutch mechanism 34 is provided between the winding pipe 3 and the operation unit 4, and transmits the rotation of a pulley (described later) of the operation unit 4 to the winding pipe 3 or releases the transmission. Or

  The second clutch mechanism 35 connects the winding pipe 3 and the support shaft 30 at one end of the winding pipe 3 or releases the connection.

  The operation unit 4 raises and lowers the screen according to the user's lifting operation. The operation unit 4 is connected to the winding pipe 3 via the first clutch mechanism 34. Hereinafter, details of the operation unit 4 will be described.

[Operation unit configuration]
FIG. 3 is a cross-sectional view of the operation unit 4 in the side surface direction.

  As shown in FIGS. 1 to 3, the operation unit 4 includes an operation member 40 and an operation case 45. The operation member 40 includes a grip 41, a gripping cord 42, a stopper 44, and a winding cord 49 in order from the lower end.

  The grip 41 is a portion that is gripped and operated by the user, and the grip cord 42 is suspended with its upper end tied to the lower end of the winding cord 49 in the stopper 44.

  As shown in FIG. 3, the operation case 45 is fixed to the side plate 1a. In the operation case 45, a fixed shaft 48 fixed to the side plate 1a, a pulley 46 rotatably supported with respect to the fixed shaft 48, and one end of the pulley 46 are connected so as to be wound and unwound. There is provided a winding cord 49 and a spring spring 47 as an urging member, which is located on the inner diameter side of the pulley 46, one end fixed to the fixed shaft 48 side, and the other end fixed to the pulley 46 side.

  The fixed shaft 48 has a length in the axial direction that is short enough to support the pulley 46. The support shaft 30 of the winding pipe 3 passes through the fixed shaft 48 concentrically, and the support shaft 30 and the fixed shaft 48 are not relatively rotatable.

  The first clutch mechanism 34 transmits the rotation in one direction from the pulley 46 to the winding pipe 3, while the rotation in the other direction of the pulley 46 is not transmitted to the winding pipe 3, and the rotation from the winding pipe 3 is not performed. The pulley 46 is configured not to transmit.

  That is, when the pulley 46 is rotated in the unwinding direction by a user operation on the operation unit 4, the winding pipe 3 is rotated in the unwinding direction via the first clutch mechanism 34. When the pulley 46 is rotated in the unwinding direction by a predetermined amount by the above operation, the second clutch mechanism 35 releases the connection between the winding pipe 3 and the support shaft 30 and the winding pipe 3 rotates in the winding direction. .

  When the pulley 46 is rotated in the unwinding direction by the above operation and the winding pipe 3 is rotated in the unwinding direction via the first clutch mechanism 34, the rotation of the winding pipe 3 is stopped. The two-clutch mechanism 35 is activated, the winding pipe 3 and the support shaft 30 are connected, and the winding pipe 3 maintains the stopped state. Further, when the pulley 46 is rotated in the unwinding direction by an operation on the operation unit 4 while the winding pipe 3 is rotating in the winding direction, the first clutch mechanism 34 is operated and the winding pipe 3 is stopped.

  The stopper 44 restricts winding of the winding cord 49 around the pulley 46 by a predetermined amount or more. That is, the stopper 44 locks the gripping cord 42 at a predetermined position so that the gripping cord 42 connected to the winding cord 49 is not excessively wound and the grip 41 does not reach the user's hand.

  As shown in FIG. 3, the stopper 44 accommodates the lower end of the winding cord 49 and the upper end of the gripping cord 42, and includes a stopper cover 50 and a stopper main body 60. Hereinafter, the details of the stopper 44 will be described.

[Details of stopper]
FIG. 4 is a perspective view of the stopper cover 50 of the stopper 44. 4A is a perspective view of the entire stopper cover 50, and FIG. 4B shows a partial cross section thereof.

  FIG. 5 is a perspective view of the stopper main body 60 of the stopper 44. FIG. 5A is a perspective view in one direction of the stopper body 60, and FIG. 5B is a perspective view when FIG. 5A is rotated 180 degrees.

  FIG. 6 is a perspective view of the stopper 44. 6A shows a state in which a part of the stopper main body 60 is accommodated in the stopper cover 50, and FIG. 6B shows a state in which the entire stopper main body 60 is accommodated in the stopper cover 50.

  7 is a partial cross-sectional view of the stopper 44. FIG. 7A corresponds to FIG. 6A, and FIG. 7B corresponds to FIG. 6B. 8A and 8B are cross-sectional views of the stopper 44 on a plane perpendicular to the hanging direction of the gripping cord 42, FIG. 8A showing a cross section AA in FIG. 7A and FIG. 8B showing a cross section BB in FIG.

  FIG. 9 is a cross-sectional view of the operation unit 4 of the roll screen 100 in a state where the grip cord 42 is not connected.

  As shown in FIGS. 4 to 8, the stopper 44 is configured by accommodating a cylindrical stopper body 60 in a hollow barrel-shaped stopper cover 50. As described above, the stopper body 60 accommodates the lower end of the winding cord 49 and the upper end of the gripping cord 42.

  The inner peripheral surface 50 a of the stopper cover 50 has a cylindrical shape corresponding to the surface 60 a of the stopper main body 60 so that the stopper main body 60 can be accommodated. At the end of the inner peripheral surface 50a on the winding cord 49 side, a vertically long rectangular parallelepiped convex portion 51 is formed. On the other hand, on the surface 60 a of the stopper main body 60, a concave portion 61 that can be engaged with the convex portion 51 and accommodate the convex portion 51 is formed.

  By providing the convex portion 51 and the concave portion 61, the stopper 44 is configured such that a part of the stopper main body 60 is not accommodated in the stopper cover 50 against the urging force of the mainspring spring 47 as shown in FIGS. An accommodation state (FIGS. 6A, 7A, 8A, and 9) and an accommodation state (FIGS. 6B, 7B, and 8B) in which the entire stopper body 60 is accommodated in the stopper cover 50 by the urging force of the mainspring spring 49. Can be switched.

  That is, a part of the stopper main body 60 is accommodated (inserted) in the stopper cover 50, and the surface (upper surface) other than the concave portion 61 of the stopper main body 60 abuts against the convex portion 51 of the stopper cover 50 against the urging force. Thus, the non-accommodating state is formed, and the recessed portion 61 of the stopper main body 60 is engaged with the convex portion 51 of the stopper cover 50 to form the accommodated state.

  An opening 62 is formed on the surface 60 a of the stopper main body 60 so as to open the ends of the winding cord 49 and the gripping cord 42. The recess 61 is formed at a position facing the opening 62 in the stopper body 60. That is, the recess 61 is formed at a position that is least susceptible to the influence of the strength reduction of the stopper body 60 due to the formation of the opening 62. Thereby, the strength of the stopper main body 60 is maintained.

  Normally, when connecting the winding cord 49 and the gripping cord 42, a cord having a different length is prepared for each product size of the blind 100 as the gripping cord 42, so that the gripping cord 42 is not connected. In order for the assembly operator to connect the gripping cord 42 to the winding cord 49 of the blind 100, at least a part of the stopper main body 60 from the stopper cover 50 to accommodate the gripping cord 42 in the stopper main body 60. Must be pulled out against the urging force of the mainspring 47.

  At this time, as shown in FIG. 9, the operator contacts at least a part of the stopper main body 50 with the stopper cover 60 because the surface other than the concave portion 61 of the stopper main body 60 contacts the convex portion 51 of the stopper cover 50. In the non-accommodating state, after the stopper body 50 is easily pulled out from the stopper cover 50, the connecting operation of the gripping cord 42 to the stopper 44 (winding cord 49) can be performed. This improves the workability of assembly.

  Further, a pair of ribs 52 projecting from the inner peripheral surface 50a is formed at the end of the inner peripheral surface 50a of the stopper cover 50 on the grip cord 42 side. On the other hand, a pair of engagement grooves 64 that can be engaged with the ribs 52 are formed at the end of the surface 60 a of the stopper body 60 on the grip cord 42 side.

  On the other hand, on the cylindrical surface 60a of the stopper body 60, each upper part of the engagement groove 64 (position shifted 90 degrees in the forward and backward direction from the recess 61) and a position shifted 90 degrees further from them (in the recess 61) Guide grooves 63 capable of guiding the ribs 52 are formed in the opposing positions.

  The guide groove 63 guides the rib 52 when the surface (upper surface) other than the concave portion 61 of the stopper main body 60 is accommodated up to a position where it contacts the convex portion 51 of the stopper cover 50 in the non-accommodated state. . The guide groove 63 prevents the surface (upper surface) other than the concave portion 61 of the stopper main body 60 from being caught by the rib 52, and the non-accommodating state is smoothly formed.

  Further, in the accommodated state, when the rib 52 of the stopper cover 50 is engaged with the engagement groove 64 of the stopper body 60, the stopper body 60 is completely accommodated and locked in the stopper cover 50. .

  In the accommodated state and the non-accommodated state, the stopper cover 50 and the stopper body 60 are rotated relative to each other around an axis parallel to the gripping cord 42 (winding cord 49), and the convex portion 51 and the concave portion 61 are positioned. Switching is possible by adjusting or shifting. As described above, the convex portion 51 and the concave portion 61 are aligned (engaged) in the accommodated state, but in the non-accommodated state, the convex portion 51 and the concave portion 61 are 90 degrees around the axis. Alternatively, the state is shifted by 180 degrees.

[Blind operation]
Next, the operation of the blind 100 configured as described above will be described.

  10A to 10G are perspective views showing a state of the screen lifting operation of the roll screen 100.

  FIG. 10A shows a state where the screen 2 is wound up to the upper limit by the winding pipe 3. In this state, the take-up pipe 3 is rotated in the screen take-up direction by the take-up spring 31, but the weight bar 5 is brought into contact with the set frame 1 to maintain the stopped state of the screen 2. ing. In this state, the operating member 40 has its winding cord 49 wound around the pulley 46, and the stopper 44 is in contact with the operating case 45.

  10B, when the user pulls down the grip 41 of the operation member 40 in the direction of the arrow, the winding cord 49 of the operation member 40 is unwound from the pulley 46 and out of the operation case 45. And the pulley 46 rotates in the unwinding direction.

  As a result, the take-up pipe 3 rotates via the operation unit 4 and the first clutch mechanism 34, and the screen 2 is lowered in the direction of the arrow in FIG. Along with this lowering, a spring reaction force is accumulated in the mainspring 47 in the operation unit 4. The stopper 44 is also lowered by the amount of the grip 41 being pulled down, and the upper winding cord 49 is exposed.

  Subsequently, as shown in FIG. 10C, when the user stops the pull-down operation of the grip 41 and releases his / her hand, the pulley 46 rotates in the winding direction by the accumulated force of the mainspring spring 47, and the winding cord 49 moves to the pulley 46. It is wound up and moved in the direction of the arrow to the position regulated by the stopper 44. On the other hand, the screen 2 stops at the position where the user stops the operation by connecting the winding pipe 3 and the support shaft 30 by the operation of the second clutch mechanism 35.

  Subsequently, as shown in FIG. 10D, when the user further pulls down the grip 41, the winding pipe 3 is rotated by the same operation as described above, and the screen 2 is further lowered in the direction of the arrow. Then, as shown in FIG. 10E, the screen 2 is lowered to the lower limit position by repeating the pull-down operation. Further, by adjusting the number of operations, the user can lower the screen to a desired position and stop it.

  When the screen 2 in the lowered state is raised, as shown in FIG. 6F, the user pulls the grip 41 by a predetermined amount (the amount of rotation that can release the second clutch mechanism) in the direction of the arrow.

  When the user releases his / her hand from the grip 41, the second clutch mechanism 35 releases the connection between the winding pipe 3 and the support shaft 30, and the winding pipe 3 rotates in the winding direction. The screen 2 is wound up by the action. At this time, the winding speed of the winding pipe 3 is decelerated by the first brake 32. However, as described above, at the final stage of winding, the second brake 33 is actuated to further decelerate the screen 2 and wait. Mitigates the impact of bar 5.

  Further, when the user pulls down the grip 41 while the screen 2 is rising, the pulley 46 rotates in the unwinding direction, the winding pipe 3 is reversed and rotated in a predetermined amount in the unwinding direction, and then the grip 41 is pulled down. When the operation is stopped and the hand is released, the screen 2 stops when the winding pipe 3 and the support shaft 30 are connected by the operation of the second clutch mechanism 35. Thereby, the user can stop the rising of the screen 2 at a desired position.

  FIG. 11 is a cross-sectional view of the operation unit 4 of the roll screen 100 before and after operation.

  When the user pulls the grip 41 downward in the direction of the arrow in FIG. B from the state where the stopper 44 contacts the operation case 45 and the winding of the winding cord 49 is restricted as shown in FIG. Further, the winding cord 49 is unwound from the pulley 46 against the urging force of the mainspring spring 47 and pulled out of the operation case 45, and the pulley 46 is unwound in the unwinding direction (counterclockwise arrow direction in the figure). Rotate.

  As a result, the winding pipe 3 is rotated and the screen 2 is lowered, and the spring reaction force is accumulated in the mainspring 47 in the operation unit 4, and the stopper 44 is lowered by the amount of the grip 41 being pulled down.

[Procedure for connecting winding cord and gripping cord]
Next, a procedure for connecting the winding cord 49 and the gripping cord 42 via the stopper 44 will be described. 12 and 13 are cross-sectional views of the operation unit 4 showing the procedure for connecting the gripping cord 42 to the winding cord 49.

  As shown in FIG. 12A, first, the operator grasps the exposed portion of the stopper main body 60 from the stopper cover 50 with his / her hand from the non-accommodating state (partially accommodated state) of the stopper main body 60 in the stopper cover 50. The stopper body 60 is pulled out from the stopper cover 50. In this non-accommodating state, as described above, the convex portion 51 of the stopper cover 50 and the concave portion 61 of the stopper main body 60 are 90 degrees or 180 degrees around the axis of the winding cord 49 in the hanging direction (Y direction in the figure). It is in a shifted state.

  Subsequently, as shown in FIG. 12B, the operator connects (accommodates) the end portion 42a of the gripping cord 42 to the stopper main body 60 via the opening 62 of the stopper main body 60, and winds the stopper cover 50. The cord 49 is rotated 90 degrees or 180 degrees around the axis.

  Then, as shown in FIG. 13A, the angle of the convex portion 51 of the stopper cover 50 and the concave portion 61 of the stopper main body 60 coincide with each other. In this state, the operator attaches the stopper main body 60 to the stopper cover 50. insert.

  As a result, as shown in FIG. 13B, the convex portion 51 and the concave portion 61 are engaged with each other, and the rib 52 of the stopper cover 50 is engaged with the engaging groove 64 of the stopper main body 60. The stopper cover 50 is completely accommodated and engaged, and the connecting operation of the gripping cord 42 is completed.

  As a procedure for connecting the winding cord and the gripping cord, the stopper main body 60 is pulled out from the stopper cover 50 from the non-accommodating state (partially accommodated state) of the stopper main body 60 in the state shown in FIG. 12A. However, even in the non-accommodating state, for example, as shown in FIG. 6, a part of the opening 62 of the stopper body 60 is exposed from the lower end of the stopper cover 50. It is also possible to connect (accommodate) the end portion 42 a of the gripping cord 42 to the stopper main body 60 through the opening 62 of the stopper main body 60 before pulling out from the stopper main body 60. If this procedure is followed, the stopper body 60 can be pulled out of the stopper cover 50 by pulling the grip cord 42 connected to the stopper body 60, and then the stopper body 60 is rotated and inserted into the stopper cover 50 as described above. By doing so, the connection work can be completed.

[Summary]
As described above, according to the present embodiment, the stopper 44 of the blind 100 is switched to the non-accommodating state in which at least a part of the stopper main body 60 is not accommodated in the stopper cover 50 against the urging force of the mainspring spring 47. Can do. Thus, the operator can easily perform the connecting operation of the gripping cord 42 to the stopper 44 in the non-accommodating state, and the assembling workability is improved.

[Modification]
The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present technology.

  In the above-described embodiment, an example in which the convex portion 51 is formed on the stopper cover 50 and the concave portion 61 is formed on the stopper main body 60 is shown, but conversely, the concave portion is formed on the stopper cover 50 and convex on the stopper main body 60. A part may be formed.

  In the above-described embodiment, the convex portions 51 and the concave portions 61 are formed at the end portions of the stopper cover 50 and the stopper main body 60 on the winding cord 49 side, respectively. However, the convex portion 51 and the concave portion 61 may be formed at the end portions of the stopper cover 50 and the stopper main body 60 on the gripping cord 42 side. Further, the convex portion 51 and the concave portion 61 may be formed from the upper end to the entire lower end of the inner peripheral surface 50a of the stopper cover 50 and the surface 60a of the stopper main body 60. In these cases, in the non-accommodating state, most of the stopper body 60 is not accommodated (exposed) in the stopper cover 50.

  In the above-described embodiment, the stopper cover 50 is formed in a hollow barrel shape, and the stopper body 60 is formed in a cylindrical shape. However, the shapes of the stopper cover 50 and the stopper body 60 are not limited to these, for example, Various shapes such as a cone shape and a truncated cone shape can be used.

  In the above-described embodiment, the accommodation state and the non-accommodation state of the stopper main body 60 in the stopper cover 50 can be switched between the convex portion 51 and the concave portion 61, but the accommodation state and the non-accommodation state are switched in other configurations. May be. For example, between the stopper cover 50 and the stopper main body 60, for example, a locking member such as a sheet shape, a plate shape, or a rod shape that can be locked against the urging force of the mainspring spring 47 is inserted. The non-accommodating state may be formed, and the accommodating state may be formed by pulling out the locking member against the urging force.

  In the above-described embodiment, an example in which the screen 2 is lowered by the user repeating the pull-down operation of the operation member 40 (FIGS. 10A to 10E) is shown. However, the operation unit 4 is configured such that the user pulls down the operation member 40. By repeating the above, the screen 2 may be raised, and the screen 2 may be lowered when the user pulls the operation member 40 by a predetermined amount (a structure in which the raising / lowering direction with respect to the operation is opposite to that of the above-described embodiment).

  In each of the above-described embodiments, an example in which the present invention is applied to a roll screen having a screen as a shielding material has been shown. However, the present invention is not limited to a roll screen, and can be similarly applied to other blinds such as a Venetian blind, a pleated screen, and a roman shade.

DESCRIPTION OF SYMBOLS 1 ......... Support member 2 ......... Screen 3 ......... Winding pipe 4 ......... Operation unit 31 ... Winding spring 40 ... Operation member 41 ... Grip 42 ... Grip cord 44 ... Stopper 45 ... ... Operation case 46 …… Pulley 47 …… Spring spring 48 …… Fixing shaft 49 …… Take-up cord 50 …… Stopper cover 51 …… Convex part 52 …… Rib 60 …… Stopper body 61 …… Concave part 62 …… Opening part 63 …… Guide groove 64 …… Engagement groove 100… Roll screen

Claims (5)

A shielding material;
An operation unit that raises and lowers the shielding material according to a user's lifting operation,
The operation unit is
An operation case for accommodating a rotatable pulley;
A winding member having one end coupled to the pulley so as to be wound and unwound, and
A spring that urges the winding member in a direction that is always wound around a pulley or a direction that is unwound from the pulley;
A stopper for restricting winding of the winding member to the pulley by a predetermined amount or more;
A gripping member that is connected to the winding member by the stopper and hangs down from the operation case,
The stopper is
A stopper body to which the winding member is coupled;
A stopper cover for accommodating the stopper body,
A non-accommodating state in which at least a part of the stopper body is not accommodated in the stopper cover against the urging force of the urging member, and an accommodation in which the stopper body is accommodated in the stopper cover by the urging force of the urging member A blind that can be switched between states. The blind according to claim 1,
The stopper cover has a convex portion on an inner peripheral surface having a shape corresponding to the surface of the stopper main body,
The stopper body has a recess capable of accommodating the protrusion on the surface,
The stopper is
The non-accommodating state is formed by a surface other than the concave portion of the stopper body coming into contact with the convex portion against the biasing force,
The blind which forms the said accommodation state because the said recessed part of the said stopper main body engages with the said convex part. The blind according to claim 2,
The convex portion is formed at an end of the inner peripheral surface of the stopper cover on the winding member side,
The said recessed part is formed in the edge part by the side of the said winding member of the said surface of the said stopper main body. The blind according to claim 2 or 3,
The stopper cover has a rib protruding from the inner peripheral surface,
The said stopper main body has a guide groove which guides the said rib when the surface other than the said recessed part is accommodated in the said surface until the position contact | abutted with the said convex part. The blind according to any one of claims 2 to 4,
The surface of the stopper body has an opening that opens to accommodate each end of the winding member and the gripping member;
The said recessed part is formed in the position which opposes the said opening part in the said stopper main body.