JP6518407B2 - Shielding device - Google Patents

Description

  The present invention relates to a shielding device such as an accordion curtain or a folding door or the like using a weir, or a curtain rail, a vertical blind, a panel curtain or the like not using a weir.

  As the shielding device, there are devices which use an accordion curtain and folds such as folding doors, sliding doors, roll rolls or pleated screen doors, and those which do not use folds such as curtain rails, vertical blinds and panel curtains. According to the present invention, the support member is configured to suspend and support a shielding member such as a curtain member so as to be able to open and close using a leading runner movable in a hanger rail.

  As such a shielding device, an accordion door configured to automatically close is disclosed (see, for example, Patent Document 1). According to the configuration disclosed in Patent Document 1, the accordion door is automatically closed by the action of the elastic body (tension spring) provided in the accordion door body, and the accordion door is formed in the accordion door body. A reel stopper is provided which can hold the main body in an open state or in an intermediate state between an open state and a closed state against the biasing force of an elastic body (tension spring). The reel stopper is adapted to be capable of holding in the open or halfway state by the action of biasing means (spring) and a cam clutch provided therein.

  Moreover, the accordion door which can be opened and closed with an operation string is disclosed as another shielding apparatus (for example, refer patent document 2). According to the configuration disclosed in Patent Document 2, opening and closing of the accordion door main body in the left and right direction can be performed by the endless operation cord.

JP, 2010-19034, A Japanese Examined Patent Publication 4-74516

  As described above, according to the configuration disclosed in Patent Document 1, the accordion door is automatically closed by the action of the elastic body (tension spring) provided in the accordion door body, and the inside of the accordion door body is configured. In the above, there is provided a reel stopper which can be held in the open or halfway state by the action of the biasing means (spring) and the cam clutch provided inside.

  However, according to the technique of Patent Document 1, when the accordion door is operated in the opening direction, the cam clutch is wound up by the biasing means (spring), so the biasing force of the biasing means (spring) It is also biased in the opening direction of the one that is smaller than the biasing force of the elastic body (tension spring).

  That is, the power of the elastic body (tension spring) for moving the accordion door main body in the closing direction is reduced. In the case of the accordion door provided with the reel stopper, the accordion door is not provided with the reel stopper. It is necessary to provide the elastic body (tension spring) having a biasing force that is greater than the biasing force of the biasing means (spring). For this reason, while the efficiency of the energizing force accompanying opening and closing of the said accordion door main body worsens, the said elastic body (tension spring) and the said biasing means (spring) for every accordion door main body which various sizes are requested | required by an application. The balance of the system must be adjusted, and the design burden and installation burden to maintain the quality will increase.

  Therefore, in the shielding apparatus, the shielding material such as the curtain material is automatically closed, and the urging force in the direction against the power for automatically closing the shielding material is unnecessary, and the shielding material is opened or halfway A configuration that can be held in the state is desired.

  On the other hand, if the shielding device is configured to open and close the shielding material through the operation cord as in the technique of Patent Document 2, it is constant compared with the case where the shielding material is opened and closed by grasping the handle. Since the shielding material can be opened and closed by operating the operation code at the position, the operability is excellent.

  However, according to the technique of Patent Document 2, since the operation cord for operating the accordion door is provided for both of the opening and closing directions, when performing a desired operation (opening operation or closing operation) for the door main body, It is impossible to grasp whether the direction is the opening direction or the closing direction, and it is not possible to perform a prompt operation. In other words, when the door body is closed, the operator can not know which of the two front and rear operation strings should be pulled to open the door body even though the operator wants to open the door body. Problems can arise.

  Therefore, in the shielding device, a convenient configuration is desired.

  An object of the present invention is to provide a shielding device in which driving of a shielding material is smoothed by a predetermined cord in view of the above-mentioned problems.

The shielding device according to the first aspect of the present invention supports the leading runner movably along the hanger rail, includes the shielding material on the lower surface side of the hanger rail, and can open and close the shielding member by the movement of the leading runner. A transmission device that moves in the opening and closing direction in conjunction with the leading runner, biasing means that biases the leading runner in the closing direction, and a stopper that restricts or permits movement of the transmission member. And the transmission body constitutes a closed loop related to the opening operation, and the stopper is opened and closed by the opening and closing operation directly on the shielding material and the operation cord connected to the closed loop based on the movement state of the closed loop detecting movement in the opening direction of the transmission member based on the operation including the operation, after the movement in the opening direction of the transmission member, when turned to move in the closing direction by the biasing means, the transmission To the the state that restrains movement in the closing direction, characterized in that it is configured to selectively control a state that allows movement in the closing direction.

  Further, in the shielding device according to the first aspect of the present invention, when the stopper detects that it is less than a predetermined displacement minimum movement amount from the state of restricting the movement of the transmission body in the closing direction, the stopper is closed. It is characterized in that it operates in a state in which the movement of the lens is restricted and movement in the closing direction is permitted when it is detected that the movement amount is the predetermined displacement minimum movement amount or more.

  Further, in the shielding device according to the first aspect of the present invention, when the stopper detects that it is less than the predetermined displacement minimum movement amount from a state in which movement of the transmission body in the closing direction is restrained, the closing direction Movement is restricted, and movement in the closing direction is permitted if it is detected that the movement amount is greater than or equal to the predetermined displacement minimum movement amount and less than the predetermined movement amount, the predetermined elongation movement amount When it detects that it is above, it is characterized by operate | moving so that it may be set as the state which restrict | limits the movement to a closing direction.

  Further, in the shielding device according to the first aspect of the present invention, the stopper is closed when detecting that the stopper is less than the second displacement minimum movement amount from the state of allowing movement of the transmission in the closing direction. Operation to allow movement to the closing direction when it is detected that the movement to the second movement displacement amount is equal to or more than the second displacement minimum movement amount and the predetermined extension movement amount is detected. It is characterized by

Further, the shielding device of the first embodiment according to the present invention, the tensile force of the operation code is characterized by being configured such that the power for moving the closed loop in the opening direction.

  Further, in the shielding device according to the first aspect of the present invention, an external force in the opening direction which supports the heel from the leading runner and which is directly applied to the heel becomes power in the opening direction with respect to the closed loop. It is characterized in that it is configured to detect the movement of the transmission body in the opening direction based on the movement state of the closed loop by the power.

  In the shielding device according to the first aspect of the present invention, the stopper is configured to directly restrain or permit the movement of the transmission body in the closing direction.

  Further, in the shielding device according to the first aspect of the present invention, the stopper is configured to restrict or permit rotation of the transmission body in the closing direction with respect to the rotation body engaged with the transmission body and rotating in conjunction therewith. It is characterized by

  Further, in the shielding apparatus according to the first aspect of the present invention, the transmission body is provided with a first turning means disposed on the proximal end side of the shielding material, and a second turning means disposed on the distal end side with respect to the leading runner. The closed loop is indirectly established by being tensioned between the deflecting means and one end of the transmission body connected to the weir and the other end of the transmission body being connected to the leading runner supporting the weir Are formed.

  Further, in the shielding device according to the first aspect of the present invention, the first turning means is provided at a first turning portion disposed at one end of the hanger rail and at a fixed portion below the first turning portion. A second turning portion, and the second turning means is configured to have a third turning portion disposed at the other end of the hanger rail.

Further, the shielding device of the first embodiment according to the present invention, the heat transfer dynamic body, and a second portion constituting the first portion and a plurality of which constitute a single is configured by connecting, the second deflecting portion The present invention is characterized in that the same number as the number of the second portions is provided, and each end of the first portion and the second portion is fixed to the weir at a plurality of places.

Further, the shielding device of the first embodiment according to the present invention, the heat transfer moving body, characterized in that it is stretched to be a closed loop between a pair of deflection means provided at both ends of the hanger rail .

  Further, in the shielding apparatus according to the first aspect of the present invention, the movement of the transmission body in the opening direction is configured to function by a pulling operation by an operation cord.

Furthermore, the shielding device according to the second aspect of the present invention supports the leading runner movably along the hanger rail, includes a shielding material on the lower surface side of the hanger rail, and opens and closes the shielding member by the movement of the leading runner. A shield capable of being operated by an operation cord suspended from an operation unit, the transmission body moving in the opening / closing direction in conjunction with the leading runner, and biasing the leading runner in a first direction and energizing means, it prevents or allows to detect the movement of the first direction of the transmission member based on operations including opening and closing operation by directly opening and closing operations and operation code are connected to the closed loop with respect to the shielding material The operation code is provided only for moving the lead runner in the direction opposite to the first direction, and the transmission body can be moved in the direction opposite to the first direction. The operation code to, characterized in that it is configured to depend from the operation unit.

  Further, in the shielding apparatus according to the second aspect of the present invention, it is characterized in that opening and closing operation of the shielding material is possible within a range in which the operation grip for operating the movement of the operation code does not contact the floor. I assume.

  Moreover, in the shielding apparatus of the 2nd aspect by this invention, the said operation code | cord | chord is comprised so that it may be hung down from the front and back of the said operation unit.

In the shielding apparatus according to the second aspect of the present invention, the first direction is a closing direction, and the reverse direction is an opening direction.

Also, in the shielding apparatus of the second aspect according to the present invention, the transmission body constitutes a closed loop related to the opening operation, and the operation cord is connected to transmit a pulling force in the opening direction to the closed loop. .

  Further, in the shielding device according to the second aspect of the present invention, one end side of the operation code is suspended from the operation unit, and the other end side of the operation code is accommodated in either the hanger rail or the operation unit. It is characterized in that it is configured to

  Further, in the shielding device according to the second aspect of the present invention, the operation unit supporting the operation grip for operating the movement of the operation cord is configured to be attached to the hanger rail and stabilized. It is characterized by

  Further, in the shielding device according to the second aspect of the present invention, in the fully closed state, the shielding material is present at a position between the front and rear operation cords in the width direction of the surface shielded by the shielding device. In the opening operation, the shielding member is configured to move in the opening direction in a positional relationship between the front and rear operation cords.

  Further, in the shielding apparatus according to the second aspect of the present invention, the stopper is provided by being positioned on a fixed object in a circumferential path of the transmission body, and the transmission body can be directly pinched to prevent movement. It is characterized in that it is configured.

  Further, in the shielding apparatus according to the second aspect of the present invention, the stopper is configured to stop or allow rotation of a pulley for stretching the closed loop.

  According to the present invention, the shielding material is automatically closed and the shielding material is held in the open state or in the middle while eliminating the need for an urging force in a direction against the power for automatically closing the shielding material. It becomes possible.

  Further, according to the present invention, the operability is improved, and the configuration can be made easy to use.

It is a front view which shows the whole structure of the accordion curtain which comprises the shielding apparatus of 1st Embodiment by this invention. It is a top view showing arrangement relation of each element seeing from the upper part at the time of a full closing state about an accordion curtain which constitutes a shielding device of a 1st embodiment by the present invention. It is a side view showing arrangement relation of each element seeing from the right end side at the time of a full open state about an accordion curtain which constitutes a shielding device of a 1st embodiment by the present invention. (A), (b) is a cross-sectional front view which shows the structure of the cord stopper apparatus of Example 1 in the accordion curtain which comprises the shielding apparatus of 1st Embodiment by this invention. It is a disassembled perspective view regarding the cord stopper device of Example 1 in the accordion curtain which constitutes the shielding device of a 1st embodiment by the present invention. It is a bottom view of the guide groove regarding the cord stopper device of Example 1 in the accordion curtain which constitutes the shielding device of a 1st embodiment by the present invention. It is a conceptual diagram of the modification regarding the shielding apparatus of 1st Embodiment by this invention. It is explanatory drawing which shows the structure of the code | cord stopper apparatus of Example 2 in the accordion curtain which comprises the shielding apparatus of 1st Embodiment by this invention, and (a) is a plane which shows the state in which the trolley was accommodated in the case in the cancellation | release state. It is a figure, (b) is a cross-sectional front view in a cancellation | release state, (c) is a bottom view which shows the state except the case in a cancellation | release state. It is a disassembled perspective view regarding the code | cord | chord stopper apparatus of Example 2 in the accordion curtain which comprises the shielding apparatus of 1st Embodiment by this invention. It is a perspective view regarding the case of the cord stopper device of Example 2 in the accordion curtain which constitutes the shielding device of a 1st embodiment by the present invention. It is a bottom view of the guide groove of the code stopper device of Example 2 in the accordion curtain which constitutes the shielding device of the first embodiment according to the present invention. It is an explanatory view showing composition of a cord stopper device of Example 2 in Example 2 in an accordion curtain which constitutes a shielding device of a 1st embodiment by the present invention, and (a) is a plane showing a state where a truck was stored in a case in a locked state. It is a figure, (b) is a cross-sectional front view in a locked state, (c) is a bottom view which shows the state except the case in a locked state. It is a figure which shows the structure of the code | cord stopper apparatus of Example 2 in the accordion curtain which comprises the shielding apparatus of 1st Embodiment by this invention, and (a) is a cam shaft located near a 5th position rather than a 2nd position. It is a top view which shows a state, (b) is a cross-sectional front view of the same state, (c) is a bottom view which shows the state which removed the case in the same state. It is a figure which shows the structure of the code | cord stopper apparatus of Example 2 in the accordion curtain which comprises the shielding apparatus of 1st Embodiment by this invention, (a) is a top view which shows a state when a cam shaft is in a 5th position. (B) is a cross-sectional front view of the same state, (c) is a bottom view showing a state in which the case is removed in the same state. It is a front view which shows the whole structure of the accordion curtain which comprises the shielding apparatus of 2nd Embodiment by this invention. It is a disassembled perspective view which shows schematic structure of the clutch mechanism in the cord stopper apparatus of one Example in the accordion curtain which comprises the shielding apparatus of 2nd Embodiment by this invention. It is a see-through | perspective perspective view which shows schematic structure of the slider in the cord stopper apparatus of one Example in the accordion curtain which comprises the shielding apparatus of 2nd Embodiment by this invention. (A) is a front view which shows schematic structure of the code stopper apparatus of one Example in the accordion curtain which comprises the shielding apparatus of 2nd Embodiment by this invention, FIG.6 (b) is a code of one Example It is a sectional view showing a schematic structure of a stopper device. It is explanatory drawing of the guide groove in the cord stopper apparatus of one Example in the accordion curtain which comprises the shielding apparatus of 2nd Embodiment by this invention. (A), (b) and (c) illustrate the states at the time of driving, at the time of locking, and at the time of locking in the cord stopper device of one embodiment in the accordion curtain constituting the shielding device of the second embodiment according to the present invention FIG. (A), (b) is a figure which shows the modification of the operation unit in the accordion curtain which comprises the shielding apparatus of 1st and 2nd embodiment by this invention. (A) shows the conceptual diagram of the accordion curtain which comprises the shielding apparatus of 1st and 2nd embodiment by this invention, (b) is a figure which shows the modification. (A), (b) is a figure which shows the conceptual diagram of the modification of the accordion curtain which comprises the shielding apparatus of 1st and 2nd embodiment by this invention. It is a front view which shows the whole structure of the curtain rail which comprises the shielding apparatus of 3rd Embodiment by this invention. It is a top view which shows the whole structure of the curtain rail which comprises the shielding apparatus of 3rd Embodiment by this invention. It is a conceptual diagram of the curtain rail which comprises the shielding apparatus of 3rd Embodiment by this invention. (A) is a cross-sectional front view which shows the structure of the 1st unit in the curtain rail which comprises the shielding apparatus of 3rd Embodiment by this invention, (b) comprises the shielding apparatus of 3rd Embodiment by this invention FIG. 16 is a bottom view of the first pulley in the first unit in the curtain rail. It is an explanatory view at the time of a halt condition of clutch operation in the 1st unit of a curtain rail which constitutes a shielding device of a 3rd embodiment by the present invention. It is an explanatory view at the time of short pull operation of clutch operation in the 1st unit of a curtain rail which constitutes a shielding device of a 3rd embodiment by the present invention. It is an explanatory view at the time of the 1st long extension operation of clutch operation in the 1st unit of the curtain rail which constitutes the shielding device of a 3rd embodiment by the present invention. It is explanatory drawing at the time of 2nd long extension operation of the clutch operation in the 1st unit of the curtain rail which comprises the shielding apparatus of 3rd Embodiment by this invention. It is a conceptual diagram of the curtain rail which comprises the shielding apparatus of 4th Embodiment by this invention. (A), (b), (c) is explanatory drawing regarding the structure of the curtain rail which comprises the shielding apparatus of 4th Embodiment by this invention. (A), (b), (c) is explanatory drawing regarding the structure of the curtain rail which comprises the shielding apparatus of 4th Embodiment by this invention. It is explanatory drawing of the height of the operation grip regarding the shielding apparatus of each embodiment by this invention. (A), (b) is explanatory drawing of the opening width regarding the shielding apparatus of each embodiment by this invention. (A), (b) is explanatory drawing of the modification regarding the shielding apparatus of 4th Embodiment by this invention.

  Hereinafter, the shielding apparatus of each embodiment by this invention is demonstrated. In the shielding device according to the present invention, there are used curtains such as accordion curtains, folding doors, sliding doors, roll rolls or pleated screen doors, curtain rails (those which hang curtains below the rails), vertical blinds, A thing which does not use a weir such as a panel curtain is assumed. Therefore, the accordion curtain 1 will be described as a first embodiment and a second embodiment as a representative example using a weir, and the curtain rail will be described as a first embodiment and a second embodiment as a representative example not using a weir.

  In the specification, for example, with respect to the front view of the accordion curtain 1 shown in FIG. 1, the upper side and the lower side of the illustration are respectively upward (or upper) and downward (or upper) according to the hanging direction of the accordion curtain 1 The lower side is defined as right side in the right direction (or right side) of the accordion curtain 1, and the left direction in the left side (or left side) of the accordion curtain 1, and the side where the illustration is viewed is front of the accordion curtain 1 The direction (or front side) and the back side relative to this will be described as being defined as the back direction (or back side) of the accordion curtain 1. For example, when the accordion curtain 1 is referred to as the front-rear direction, it refers to the direction perpendicular to the plane shown in the front view of FIG. Also, when referring to the height, it refers to an upward length extending perpendicularly to the floor surface on which the accordion curtain 1 is installed.

First Embodiment
(Accordion curtains that make up the shielding device)
First, the structure of the accordion curtain 1 which comprises the shielding apparatus of 1st Embodiment by this invention is demonstrated. The shielding device according to the first embodiment described below is configured to suspend and support the shielding material (curtain material 65) openably and closably using the leading runner 4 movable in the hanger rail 2. FIG. 1 is a front view showing an entire configuration of an accordion curtain 1 constituting a shielding device according to a first embodiment of the present invention. FIG. 2 is a plan view showing the arrangement of the elements of the accordion curtain 1 constituting the shielding apparatus of the first embodiment of the present invention as viewed from above in the fully closed state. FIG. 3 is a side view showing the arrangement of the elements of the accordion curtain 1 of the first embodiment according to the present invention as viewed from the right end side in the fully open state.

  As shown in FIGS. 1 to 3, the accordion curtain 1 includes a hanger rail 2, a leading runner 4, an operation unit 6, a movable rod 7, a curtain body 14, a cord stopper device 70, and a closed loop cord 26. , Tow cord 51 is the main component.

  The hanger rail 2 is a substantially square tubular member whose lower end side is opened so that the runner 3 and the leading runner 4 for suspending and supporting the shielding material (the curtain member 65) can move. A fitting portion to be fitted to the bracket 15 is provided on the upper surface of the hanger rail 2. Therefore, the upper end surface of the hanger rail 2 is fixed to the ceiling-side mounting surface via the bracket 15.

  The runner 3 suspends and supports the curtain member 65 and is configured to be movable inside the hanger rail 2.

  The leading runner 4 is fixed to the upper end of the moving rod 7. More specifically, the lower end portion of the leading runner 4 is provided with an attaching member 20 which is bent in a stepped manner. The attachment member 20 is inserted into the lower surface opening of the hanger rail 2 and the hanging member 22 fixed to the moving rod 7, the hanging member 22 fixed to the leading runner 4, and the moving rod 7 or the curtain body 14 slides. It consists of a rotation guide bar 21 which functions to suppress the rotation of the leading runner 4 which may occur.

  Further, an adapter 25 is integrally provided at the right end of the leading runner 4, and one end of a weight cord 29 is attached to the adapter 25 and one end of a closed loop cord 26 is attached. The other end of the weight cord 29 is turned down by a pulley 31 provided in the operation unit 6 to hang down, and is connected to a weight member 30 as a force application means. The other end of the closed loop cord 26 is turned in direction by the pulley 27 provided in the operation unit 6, passes through the inner part of the bracket 15 disposed at a plurality of places on the hanger rail 2, and the cord together with the operation cord 42 It is attached to the equalizer 9.

  The mounting frame 5 is a frame member standing upright in the vertical direction, and fixes the hanger rail 2 via the operation unit 6. The left end surface of the mounting frame 5 is a portion with which the right end surface of the moving rod 7 abuts. In addition, inside the mounting frame 5, a weight cord 29 which is turned down by the pulley 31 in the operation unit 6 is inserted from an adapter 25 provided integrally with the leading runner 4 and connected to the weight cord 29. A member 30 is housed. The weight member 30 has a mass used to automatically close the curtain body 14. However, the weight member 30 may not be required to be automatically closed by the biasing force of a coil spring 64 described later. When making the weight member 30 unnecessary, it is possible to enlarge the open space of the curtain body 14 by thinning the width of the mounting frame 5 in the left-right direction. The pulley 31 may be provided on the mounting frame 5.

  The operation unit 6 is fixed to the upper end of the hanger rail 2. In the operation unit 6, guide poles 41 are respectively connected to the front and back sides of the accordion curtain 1 with respect to the front view of FIG. 1, and as shown in FIG. 41 is attached to the inside of the operation grip 40 through the insertion hole inside. In addition, the operation unit 6 includes an operation pulley 43, and the operation pulley 42 arranges the end on the other end side of the operation cord 42 at a plurality of locations at the upper end of the hanger rail 2 Turn the direction to insert the. Thereafter, the other end of the operation code 42 is attached to the code equalizer 9 together with the closed loop code 26.

  In addition, the operation unit 6 includes a pulley 27, and the pulley 27 is used to attach the other end of the closed loop cord 26 whose one end is attached to the adapter 25 integrally provided on the leading runner 4 to the code equalizer 9. Turn the direction. In addition, the operation unit 6 includes a pulley 31, and the pulley 31 is oriented to connect the other end of the weight cord 29 whose one end is attached to an adapter 25 integrally provided on the leading runner 4 to the weight member 30. Turn around.

  The moving rod 7 is a frame-like member extending in the vertical direction, and has a cushioning material 7 a on the right end face contacting the mounting frame 5 of the moving rod 7. The movable rod 7 has a substantially U shape as viewed from above so as to cover one end of the curtain body 14. As a result, the inside of the moving rod 7 is not seen from the outside, and the operator's finger or hand is prevented from being pinched and damaged. Since the leading runner 4 is fixed on the upper end side of the moving rod 7, when the moving rod 7 moves along the hanger rail 2, the curtain body 14 is also moved, and the curtain member 65 is opened and closed. Is done. It should be noted that no handle is provided and there is no difference in level where the finger touches the heel, so it is possible to push in the opening direction but not easy to pull in the closing direction.

  The fixed weir 8 is provided at the left end of the accordion curtain 1. The fixed rod 8 is fixed to the left wall surface and provided so as not to move. The right end face of the fixed rod 8 has a substantially U-shape as viewed from above so as to cover one end of the curtain body 14.

  The code equalizer 9 includes a first connecting portion for attaching one end of the operation code 42 and one end of the closed loop code 26, and two traction cords 51a and 51b (collectively referred to as "traction cord 51"). And a second connecting portion for attaching one end. The code equalizer 9 has a size capable of inserting the inside portion of the bracket 15 and is provided movably in the longitudinal direction on the upper side portion of the hanger rail 2 according to the operation of the operation code 42.

  The turning pulley unit 10 is fixed to the upper end of the fixed rod 8. The turning pulley unit 10 includes a pulley 52 inside. After the two traction cords 51a and 51b attached to the second connection portion provided at one end of the code equalizer 9 pass through the cord stopper device 70, they are turned downward via the pulley 52 and the traction cord 51a is It turns from the left end to the right end substantially parallel to the longitudinal direction of the hanger rail 2 via the pulley unit 11, and the traction cord 51b from the left end substantially parallel to the longitudinal direction of the hanger rail 2 via the pulley unit 12. Turn to the right. Thereafter, the tow cord 51 a is locked by the cord adjuster 13 fixed to the moving rod 7. The traction cord 51b is similarly locked by a cord adjuster (not shown) fixed to the moving rod 7. The turning pulley unit 10 may be provided at the left end of the hanger rail 2.

  The pulley unit 11 diverts the traction cord 51a going downward through the diverting pulley unit 10 from the left end to the right end substantially in parallel with the longitudinal direction of the hanger rail 2. Thereafter, the tow cord 51 a is locked by the cord adjuster 13 fixed to the moving rod 7.

  The pulley unit 12 diverts the traction cord 51b, which is directed downward through the diverting pulley unit 10, from the left end to the right end substantially in parallel with the longitudinal direction of the hanger rail 2. Thereafter, the traction cord 51b is locked by a cord adjuster (not shown) fixed to the moving rod 7.

  The cord adjuster 13 is fixed to the movable rod 7, and when the curtain member 65 is fully closed, the path of the traction cord 51a with respect to the pulley unit 11 is substantially parallel to the longitudinal direction of the hanger rail 2 Adjust the length and lock it. Also, a cord adjuster (not shown) similar to the cord adjuster 13 is secured to the move rod 7 to similarly lock the traction cord 51b.

  The operation cord 42 is a string-like member, and the end on one end side thereof is attached to the inside of the operation grip 40. On the other hand, the closed loop cord 26 and the traction cords 51 a and 51 b are provided to have a diameter smaller than that of the operation cord 42. That is, although the closed loop cord 26 and the pulling cords 51a and 51b do not need to be operated by the operator, the operating cord 42 is large in diameter because it relates to the operation of the operator. Further, the diameter of the traction cords 51a, 51b is smaller than the diameter of the operation cord 42 because the traction cords 51a, 51b are directed downward via the pulley 52 in the diverting pulley unit 10 fixed to the upper end of the fixed rod 8. It is small.

  Here, the paths of the operation cord 42, the traction cords 51a and 51b, and the closed loop cord 26 will be described again. When advancing along the operation cord 42 from the operation grip 40 side, the operation cord 42 passes through the insertion hole of the guide pole 41 and the inner side of the bracket 15 along the longitudinal direction at the upper part of the hanger rail 2 by the operation pulley 43 It is turned around so as to pass through the part, and is attached to the first connecting part of the code equalizer 9 together with the code 26 for the closed loop.

  The two traction cords 51a and 51b attached to the second connecting portion of the code equalizer 9 pass through the cord stopper device 70 and are connected via the pulleys 52 in the turning pulley unit 10 fixed to the upper end of the fixed rod 8. Turn around. The traction cord 51 a turned by the pulley 52 is turned by the pulley unit 11 and is locked to the cord adjuster 13 fixed to the moving rod 7. Similarly, the traction cord 51b turned by the pulley 52 is turned by the pulley unit 12 and locked by a cord adjuster (not shown) fixed to the moving rod 7. The closed loop cord 26 attached to the first connecting portion of the cord equalizer 9 is directed to the operation unit 6 along the longitudinal direction at the upper part of the hanger rail 2 and the adapter via the pulley 27 in the operation unit 6 It is linked to 25. Accordingly, a closed loop is formed by the closed loop cord 26, the traction cord 51 and the moving rod 7.

  Thereby, when the operation grip 40 is operated and the operation cord 42 moves to the right at the upper part of the hanger rail 2, the cord equalizer 9 moves to the right and the traction cord 51 also moves, so the traction cord 51 also moves At the same time, the moving rod 7 moves in the left direction (the opening direction of the curtain member 65). Since the closed loop cord 26 connected to the leading runner 4 fixed to the upper end of the moving rod 7 is pulled along with the movement of the moving rod 7 in the left direction, the rightward movement of the code equalizer 9 is assisted. Come to work together.

  The curtain body 14 includes a curtain member 65 and an expansion and contraction mechanism as a framework for expanding and contracting in a pantograph shape. One end of the expansion and contraction mechanism is fixed to the movable rod 7 and the other end is fixed to the fixed rod 8. More specifically, as shown in FIG. 1 and FIG. 2, the expansion and contraction mechanism includes a link piece 60 rotatably connecting end portions via a support shaft 61 and a connection shaft 62, and a plurality of coil springs 64. Configured In addition, the connection shaft 62 is suspended by the suspension member of the runner 3 at intervals of every other, for example. Further, in the example shown in FIG. 1, for example, three sets of the expansion and contraction mechanisms are provided in the vertical direction, but in the accordion curtain 1, the number of the expansion and contraction mechanisms provided may be any number of two or more. Good.

  The plurality of coil springs 64 bias the curtain member 65 in the closing direction, and between the substantially parallel link pieces 60 (the front link piece and the rear link piece) which constitute the respective rhombus portions as the framework, It connects in the vicinity of the peak part which protrudes in a mountain shape in the thickness direction of the material 65, and is arrange | positioned by several places (refer FIG. 2). When the moving rod 7 is operated in the opening direction from the state in which the moving rod 7 is in contact with the mounting frame 5, the framework is folded and biasing force is stored in the plurality of coil springs 64. In this state, when the operating grip 40 is released, when the clutch operation for blocking the moving state of the tow cord 51 functions by the cord stopper device 70, the curtain member 65 is maintained in the open state at the stop position of the moving rod 7. Ru. On the other hand, when releasing the operation grip 40, the moving rod 7 abuts on the mounting frame 5 by the biasing force of the coil spring 64 when the clutch operation which allows the movement state of the pulling cord 51 by the cord stopper device 70 functions. Automatically move to the fully closed state.

  A curtain member 65 is attached to the outside of the link piece 60. The curtain member 65 is a flat cloth-like member or a skin-like member. The curtain member 65 covers the extension mechanism, the traction cord 51 and the like so that they can not be seen from the outside.

  The bracket 15 is a member for positioning and fixing the hanger rail 2 with respect to the mounting surface. The bracket 15 has a fixing portion for fixing on the mounting surface, and a fitting portion for integrating the bracket 15 with the hanger rail 2 by rotational fitting. The fixing portion has a shape bent and formed so as to have a gap through which a predetermined cord can be inserted between the mounting surface and the upper surface of the hanger rail 2.

  The cord stopper device 70 allows the movement state of the traction cord 51 in accordance with the movement action of the traction cord 51 passing through the inside (that is, in accordance with the movement action of the operation cord 42 by the operation of the operator) It is a device that performs so-called clutch operation that switches whether locking is performed to prevent the movement state, and is provided to enhance operability. An embodiment relating to the cord stopper device 70 will be described later.

  The accordion curtain 1 configured in this way does not have a structure for grasping the handle and pulling out the curtain body, and no handle is provided on the bag, and it is possible to draw a finger in the closing direction on the front and back surfaces of the bag There is no step that exceeds 5 mm in depth, making it difficult to pull the eyelid in the closing direction by mistake. In addition, since the curtain main body is pulled out through the operation cord, the operator does not have to move along with the movement of the moving rod, and for example, the pull-out operation in a state where the wheelchair user faces it becomes easy. Is good.

  In addition, since the accordion curtain 1 can be opened and closed directly by using the operation cord 42 connected to the operation grip 40, a direct feeling of operation is generated, and the operability is improved.

(Code stopper device of Example 1)
Next, the cord stopper device 70 of the first embodiment will be described. As shown in FIG. 1, the cord stopper device 70 of the second embodiment is attached to the hanger rail 2. FIGS. 4A and 4B are cross-sectional front views showing the configuration of the cord stopper device 70 of the example 1 in the accordion curtain 1 constituting the shielding device of the first embodiment of the present invention. In particular, FIG. 4A shows a state in which the stopper cam 170 does not bite the traction cord 51, and FIG. 4B shows a state in which the stopper cam 170 bites the traction cord 51. FIG. 5 is an exploded perspective view showing the carriage 150, the pressing member 160 and the stopper cam 170 which constitute the cord stopper device 70. As shown in FIG.

  The cord stopper device 70 of the first embodiment can realize the following operation. That is, the traction cord 51 passing through the inside of the cord stopper device 70 blocks the movement of the curtain member 65 in the left direction corresponding to the closing direction, and the biasing force of the coil spring 64 prevents the curtain body 140 from closing automatically. Lock state can be realized. The locked state is released by returning the tow cord 51 slightly to the right from the locked state. As a result, the curtain body 140 is automatically closed by the biasing force of the coil spring 64. It should be noted that it is possible to use the weight member 30 as a force application means instead of or in addition to the force applied by the coil spring 64.

  In order to realize such an operation, the cord stopper device 70 is provided with a case 140, and inside the case 140, a carriage 150 is supported so as to be movable in the left-right direction. In the upper portion of the carriage 150, an insertion portion 151 for inserting the traction cord 51 with the pressing member 160 described later is formed. In the configuration shown in FIGS. 4 and 5, the insertion portion 151 is provided in a flat plate shape. Further, at the right end portion of the case 140, a pulley 141 for supporting the movement of the tow cord 51 in the left-right direction is provided.

  Further, a pressing member 160 is attached to the carriage 150. The pressing member 160 is provided to face the insertion portion 151, and is a member that holds the pulling cord 51 with the insertion portion 151. The pressing member 160 is formed of an elastic metal plate, and both end sides in the width direction of the flat top surface portion 161 are side portions 162 bent downward. The side surface portion 162 is provided with a cutout portion 162a, and the hook portion 153 on the right side and upper side of the side surface portion 152 of the carriage 150 is fitted into the cutout portion 162a. As a result, the pressing member 160 does not move relative to the carriage 150.

  Further, a curved portion 163 is continuous with the upper surface portion 161, and a pressing portion 164 is continuous with the curved portion 163. The curved portion 163 is a portion bent so as to be curved at the left end portion of the upper surface portion 161, and the pressing portion 164 is a portion directed from the left curved portion 163 to the right. Further, the right end portion of the pressing portion 164 is bent upward.

  The pressing portion 164 presses the pulling cord 51 located on the insertion portion 151 in a state of having a biasing force. Therefore, a predetermined frictional force is generated between the pressing portion 164 and the pulling cord 51. Thereby, when the pulling cord 51 moves in the case 140, the movement is accompanied by the pressing member 160 and the carriage 150. However, when the movement of the carriage 150 is blocked in the case 140 in a state where the pulling cord 51 moves, the movement of the pressing member 160 is also blocked. In this case, the traction cord 51 slides on the pressing portion 164 in the state where the frictional force is applied.

  As shown in FIG. 5, the side surface portion 152 of the carriage 150 is provided with a horizontally elongated hole 154 a and a vertically elongated hole 154 b. The longitudinal holes 154a have longitudinal sides extending in the left-right direction, and the longitudinal elongate holes 154b have longitudinal sides extending in the vertical direction. The width of the horizontally elongated hole 154a is larger than the width of the vertically elongated hole 154b. The base shaft 171 of the stopper cam 170 is inserted into the horizontal hole 154a. Movement of the base shaft 171 in the vertical direction is restricted because the base shaft 171 moves in the horizontal hole 154a, but movement in the horizontal direction is not restricted as long as it is in the horizontal hole 154a. On the other hand, the engagement shaft 172 of the stopper cam 170 is inserted into the vertically elongated hole 154b. The engagement shaft 172 is movable in the longitudinal hole 154b. Therefore, since the distance between the base shaft 171 and the engagement shaft 172 is constant, the position of the engagement shaft 172 in the vertically elongated hole 154b is determined according to the position of the base shaft 171 in the horizontally elongated hole 154a, whereby the stopper cam 170 is tilted. The degree is decided.

  As shown in FIG. 5, the stopper cam 170 is provided with a base shaft 171 below each side surface, and the base shaft 171 is inserted into the above-described laterally elongated hole 154 a. Further, from the lower side of the stopper cam 170, a tongue piece 173 protrudes further downward, and the tongue piece 173 abuts on an abutting portion 140a formed by cutting out the bottom side of the case 140.

  A gear-like meshing portion 174 is provided on the outer peripheral side of the stopper cam 170 which is separated from the base shaft 171 and the tongue piece 173. The meshing portion 174 is provided to face the facing piece 142 of the case 140. Here, the meshing portion 174 is provided so that the left end side is closest to the base shaft 171, and the distance from the base shaft 171 is farther from the base end toward the right end side. Therefore, in the state shown in FIG. 4A, a gap sufficient for inserting the traction cord 51 is present between the meshing portion 174 and the facing piece 142. However, in the state shown in FIG. 4B, the gap between the meshing portion 174 and the facing piece becomes narrow. At this time, the engagement portion 174 bites the traction cord 51 and prevents the traction cord 51 from moving in the left direction.

  Further, an engagement shaft 172 is provided on each side surface of the stopper cam 170, and the engagement shaft 172 is provided on the side surface left end side of the meshing portion 174. The engagement shaft 172 is inserted into the vertically elongated hole 154b described above.

  The case 140 is provided with a holding piece 143. When the carriage 150 moves leftward while the base shaft 171 is positioned at the left end of the elongated hole 154a as shown in FIG. 4A, the stopper cam 170 moves along with the carriage 150 for a while. Then, when the base shaft 171 is held by the holding piece 143, the relative movement of the stopper cam 170 further to the left is prevented even when the carriage 150 can move further to the left. For this reason, the base shaft 171 relatively moves toward the right of the horizontally elongated hole 154a.

  As described above, when the base shaft 171 moves in the laterally elongated hole 154a, the engagement shaft 172 which is at a constant distance from the base shaft 171 also moves in the vertically elongated hole 154b. At this time, the engagement shaft 172 moves upward in the vertically elongated hole 154b, but at this time, the carriage 150 moves in the right direction. Therefore, as shown in FIG. 4B, the meshing portion 174 of the stopper cam 170 approaches the facing piece 143 and clamps the traction cord 51.

  In addition, a cam mechanism CM including a cam shaft 144 and a guide groove 155 is provided between the case 140 and the carriage 150. The cam shaft 144 is attached to the shaft mounting portion 145 of the case 140 and protrudes upward. The cam shaft 144 allows movement of the case 140 in the width direction (front-rear direction) but does not allow movement in the longitudinal direction (left-right direction). The guide groove 155 is formed on the lower surface side of the insertion portion 151 of the carriage 150, and is provided at a position where the cam shaft 144 is inserted.

  FIG. 6 is a bottom view showing the position of the cam shaft 144 in the guide groove 155. As shown in FIG. As shown in FIG. 6, the guide groove 155 moves the cam shaft 144 in the order of the first position P1 to the fourth position P4 along with the movement of the carriage 150, and the guide groove at any position P1 to P4. The reference numeral 155 can hold the cam shaft 144.

  Here, in the state where the pulling cord 51 is sandwiched between the meshing portion 174 and the facing piece 143, the movement of the pulling cord 51 in the left direction is blocked, and the closing of the curtain body 140 is restricted. At this time, the cam shaft 144 is located at the first position P1.

  From the state where the cam shaft 144 is positioned at P1, the traction cord 51 is pulled out slightly toward the right. Then, as a free state, the carriage 150 moves in the same direction as the movement direction of the traction cord 51 by the biasing force of the coil spring 64, and the cam shaft 144 is moved from the first position P1 to the second position P2 based on the movement. Head for At this time, if it is less than the displacement minimum movement amount R shown in FIG. 6, the pinching state of the first position P1 is returned, and if it is the displacement minimum movement amount R or more, it reaches from the second position P2 to the third position P3. At this time, the meshing portion 174 of the stopper cam 170 does not clamp the pulling cord 51 with the facing piece 143. Thus, the curtain body 140 automatically moves to the closed state.

  When the operation cord 42 is pulled to move the curtain body 140 again in the opening direction after it is completely closed, the pulling cord 51 is moved to the right along with the operation. At this time, if the carriage 150 moves in the same direction as the direction of movement of the traction cord 51 and moves the second displacement minimum movement amount T shown in FIG. 6 or more, the cam shaft 144 starts from the third position P3 based on the movement. Move to the fourth position P4. If the second displacement minimum movement amount T is smaller than the second displacement minimum movement amount T, the processing returns to the third position P3. At the fourth position P4, the carriage 150 is located on the right end side of the case 140. Further, the meshing portion 174 of the stopper cam 170 releases the clamping of the traction cord 51 with the facing piece 143. Thus, the curtain body 140 can be opened to a desired position.

  Then, after the curtain main body 140 is opened to a desired position, when the hand is released from the operation grip 40, the carriage 150 is moved leftward together with the traction cord 51 by the biasing force of the coil spring 64. Then, as shown in FIG. 4, the meshing portion 174 of the stopper cam 170 rotates so as to approach the facing piece 143, and the traction cord 51 is held between the meshing portion 174 and the facing piece 143. Thereby, the movement of the pull cord 51 toward the left direction is blocked, and the curtain body 140 is restricted from closing. At this time, the cam shaft 144 moves from the fourth position P4 to the first position P1.

  According to the cord stopper device 70 of the first embodiment configured as described above, the traction cord along with the movement action of the traction cord 51 passing through the inside thereof (that is, along with the movement action of the operation cord 42 by the operation of the operator) It is possible to perform a so-called clutch operation that switches whether to allow the movement state of 51 or to lock to prevent the movement state. Here, as shown in FIG. 7, the traction cord 51 and the cord for closed loop 26 are in a closed loop via the moving rod 7, and when the cord for closed loop 26 is pulled in the direction of arrow A by the operation cord 42, the cord The stopper device 70 operates as described above. Also, even when the moving rod 7 is pushed by the external force directly in the direction of arrow C (opening direction), the lower part of the closed loop cord 26 moves in the direction of arrow B and the upper part moves in A direction and the closed loop turns in the opening direction. The cord stopper device 70 can detect the movement. And since it can switch whether it locks so that a movement state will be blocked by movement distance to the open direction of operation code 42 or movement stick 7 as mentioned above, an operator can operate intuitively now. Then, as the means for moving the leading runner 4 in the opening direction, only the operation cord 42 capable of moving the closed loop in the opening direction is exposed from the operation unit 6 and suspended, so that the operator hardly loses the operation.

(Code stopper device of Example 2)
Next, the cord stopper device 70 of the second embodiment will be described. As shown in FIG. 1, the cord stopper device 70 of the second embodiment is attached to the hanger rail 2. 8 (a), (b) and (c) are explanatory views showing the configuration of the cord stopper device 70 of the second embodiment in the accordion curtain 1 constituting the shielding device of the first embodiment according to the present invention. In particular, FIG. 8A is a plan view showing the carriage 240 stored in the case 220 in the released state, FIG. 8B is a sectional front view in the released state, and FIG. It is a bottom view which shows the state except case 220 in a state. FIG. 9 is an exploded perspective view showing the carriage 240, the pressing member 250, and the stopper cam 260 that constitute the cord stopper device 70 of the second embodiment. FIG. 10 is a perspective view of the case 220 of the cord stopper device 70 of the second embodiment. FIG. 11 is a bottom view of the guide groove 300 of the cord stopper device 70 of the second embodiment. 12 (a), (b) and (c) are explanatory views showing the configuration of the cord stopper device 70 of the second embodiment, and (a) is a case where the carriage 240 is stored in the case 220 in the locked state. It is a top view which shows a state, (b) is a cross-sectional front view in a locked state, (c) is a bottom view which shows the state except case 220 in a locked state.

  The cord stopper device 70 of the second embodiment can realize the following operation. That is, the traction cord 51 passing through the inside of the cord stopper device 70 blocks the movement of the curtain member 65 in the left direction corresponding to the closing direction, and the biasing force of the coil spring 64 prevents the curtain body 140 from closing automatically. Lock state can be realized. The locked state is released by returning the tow cord 51 slightly to the right from the locked state. As a result, the curtain body 140 is automatically closed by the biasing force of the coil spring 64. It should be noted that it is possible to use the weight member 30 as a force application means instead of or in addition to the force applied by the coil spring 64.

  In the cord stopper device 70 of the second embodiment, when the operation cord 42 is pulled downward from the locked state (the pulling cord 51 is extended in the right direction) and the hand is released from the operation grip 40 after the long pulling, the locked state is restored again. Is realized.

  In addition, when the operation grip 40 is released while the operation cord 42 is not extended, the movement of the pulling cord 51 is not blocked. For this reason, the curtain body 140 moves in the closing direction by the biasing force to the curtain body 140.

  Then, when the operation cord 42 is pulled from the released state which allows movement of the pulling cord 51 and then the hand is released from the operation grip 40, the locked state is realized again. In order to shift from the release state to the lock state, it is necessary to pull the operation cord 42 to such an extent that the cam shaft 230 is disengaged from the recess 311 described later.

  In order to realize such an operation, the cord stopper device 70 of the second embodiment is configured as follows. That is, the cord stopper device 70 according to the second embodiment mainly includes the case 220, the cam shaft 230, the carriage 240, the pressing member 250, and the stopper cam 260. Hereinafter, each configuration will be sequentially described.

  First, the case 220 and the cam shaft 230 provided in the cord stopper device 70 will be described. FIG. 10 is a perspective view showing the case 220. As shown in FIG. The case 220 is provided such that the upper side and the ends on both sides are open. Here, the dolly 240 movably attached to the case 220 can jump out of the opening on the right end side, but the dolly 240 hardly protrudes from the opening on the left end side. This is because, as shown in FIGS. 8B and 8C, a restriction piece 221 that restricts the projection of the carriage 240 is present on the upper left side of the case 220. When the restriction piece 221 collides with the upper protruding portion 241 a of the carriage 240, the projection from the opening on the left end side of the carriage 240 is restricted.

  Further, on the upper side of the right end side of the case 220, a facing piece 222 is provided which closes a part of the upper opening portion. The facing piece 222 has a flat portion 222a extending in the left-right direction. However, in order to improve the guiding property of the pulling cord 51, the facing piece 222 is inclined upward from the flat portion 222a toward the left end. It is done. In addition, the right end portion of the flat plate portion 222a is provided in an R shape with an angle removed.

  The facing piece 222 is provided to face the meshing portion 264 of the stopper cam 260. In the state where the stopper cam 260 falls down, a gap sufficient for inserting the pulling cord 51 exists between the facing piece 222 and the meshing part 264, but in the state where the stopper cam 260 stands up, the facing piece 222 The gap between the and the meshing portion 264 becomes narrow. At this time, the engagement portion 264 bites the traction cord 51 and prevents the traction cord 51 from moving in the left direction.

  Further, as shown in FIG. 8B, on the side of the bottom surface 220a of the case 220, a cutout 223 obtained by cutting the bottom surface 220a is provided, and in the cutout 223, a tongue piece 263 of the stopper cam 260 is provided. Is inserted. The tongue piece 263 abuts on the contact portion 223a which is the inner wall on the right side of the notch portion 223, and restricts the stopper cam 260 from turning counterclockwise in FIG. 8B.

  In addition, the case 220 is provided with a holding piece 224. The holding piece 224 is a portion that contacts the base shaft 261 of the stopper cam 260 on the case 220 side. When the carriage 240 and the stopper cam 260 move leftward and the base shaft 261 is held by the holding piece 224 in a state where the base shaft 261 as shown in FIG. 9 is positioned at the left end of the horizontal elongated hole 244a of the carriage 240. Even when the carriage 240 can move leftward, relative movement of the stopper cam 260 further leftward is blocked.

  Further, as shown in FIG. 8B, a protrusion 225 protrudes upward from the bottom surface 220a. The protrusion 225 has a width direction (front-rear direction) of the case 220 as a longitudinal direction. A sliding groove 226 in which the cam shaft 230 can enter is provided above the projecting portion 225. The sliding groove 226 is a groove portion extending in the width direction, and is provided in a stepped groove shape. The cam shaft 230 is allowed to move in the width direction of the case 220 by the guidance of the sliding groove 226, but is not allowed to move in the longitudinal direction (left and right direction) of the case 220.

  A cam mechanism CM including a cam shaft 230 and a guide groove 300 is provided between the case 220 and the carriage 240. The cam shaft 230 constituting the cam mechanism CM has a disk-like pedestal portion 231 and projecting portions 232 b and 232 a which respectively project in the vertical direction from both sides of the pedestal portion 231. The protrusion 232 a on the lower surface side of the pedestal portion 231 enters the groove portion on the lower end side of the narrow sliding groove 226, but the pedestal portion 231 enters the groove portion on the upper tier side of the sliding groove 226. On the other hand, the projecting portion 232 b on the upper surface side of the pedestal portion 231 enters the guide groove 300 of the carriage 240.

  Subsequently, the carriage 240 and the pressing member 250 will be described. The carriage 240 is provided slidably with respect to the case 220. The carriage 240 corresponds to the slide member. As shown in FIG. 9, the carriage 240 is provided with a pair of side wall portions 241, and an upper projecting portion 241 a that protrudes upward is provided at a position above the left end side of the side wall portion 241. . A hook portion 242 is provided in the upper projecting portion 241 a, and the hook portion 242 is fitted into the notch portion 252 a of the pressing member 250, whereby the pressing member 250 is attached to the carriage 240 so as not to move.

  Further, the carriage 240 is provided with a guide plate portion 243. The upper surface side of the guide plate portion 243 is provided to face the pressing member 250, and the pulling cord 51 is held between the guide plate portion 243 and the pressing member 250. Further, on the lower surface side of the guide plate portion 243, a guide groove 300 is formed.

  The pressing member 250 opposed to the guide plate portion 243 is formed of an elastic metal plate, and both end sides in the width direction (front and rear direction) of the flat top surface portion 251 are bent downward. It becomes the side part 252. The side surface portion 252 is provided with a notch portion 252a, and the hook portion 242 of the carriage 240 is fitted into the notch portion 252a. Thus, the pressing member 250 is attached to the carriage 240.

  Further, the curved portion 253 is continuous with the upper surface portion 251, and the pressing portion 254 is continuous with the curved portion 253. The curved portion 253 is a portion which is bent to be curved at the right end portion of the upper surface portion 251. The pressing portion 254 is a portion directed leftward from the bending portion 253 on the right end side. The left end portion of the pressing portion 254 is bent upward.

  The pressing portion 254 presses the pulling cord 51 located on the guide plate portion 243 in a state of having a biasing force. Therefore, a predetermined frictional force acts between the pressing portion 254 and the traction cord 51. Thus, when the pulling cord 51 moves in the case 220, the movement is accompanied by the pressing member 250 and the carriage 240. However, when the movement of the carriage 240 is blocked in the case 220 while the pulling cord 51 is moved, the movement of the pressing member 250 is also blocked. In this case, the traction cord 51 slides on the pressing portion 254 in a state where the frictional force is applied.

  Further, as shown in FIG. 9, a laterally long hole 244 a and a vertically long hole 244 b are provided at the right end side of the side wall portion 241 of the carriage 240. The longitudinal hole 244a has a longitudinal direction along the lateral direction, and the longitudinal hole 244b has a longitudinal direction along the vertical direction. The width of the horizontally elongated holes 244a is larger than the width of the vertically elongated holes 244b.

  The base shaft 261 of the stopper cam 260 is inserted into the horizontal hole 244a. Since the base shaft 261 moves in the horizontally long hole 244a, the movement in the vertical direction is restricted, but the movement in the left and right direction is not restricted as long as it is in the horizontally long hole 244a. On the other hand, the engagement shaft 262 of the stopper cam 260 is inserted into the vertically elongated hole 244b. The engagement shaft 262 is movable in the longitudinal hole 244b. Therefore, since the distance between the base shaft 261 and the engagement shaft 262 is constant, the position of the engagement shaft 262 in the vertically elongated hole 244b is determined according to the position of the base shaft 261 in the horizontally elongated hole 244a, whereby the stopper cam 260 is tilted. The degree is decided.

  Next, the stopper cam 260 will be described. As shown in FIG. 9, the stopper cam 260 is provided with a base shaft 261 on the lower side of each side surface, and the base shaft 261 is inserted into the above-mentioned laterally elongated hole 244a. Further, an engagement shaft 262 is provided on each side surface of the stopper cam 260, and the engagement shaft 262 is provided on the side surface left end side of the engagement portion 264. The engagement shaft 262 is inserted into the longitudinal hole 244b described above.

  Further, from the lower side of the stopper cam 260, a tongue piece 263 protrudes further downward, and the tongue piece 263 abuts on an abutting portion 223a formed by cutting out the case 220. Further, on the outer peripheral side of the stopper cam 260 which is separated from the base shaft 261 and the tongue piece 263, a gear-like meshing portion 264 is provided. The meshing portion 264 is provided to face the facing piece 222 of the case 220. Here, the engagement portion 264 is provided so that the left end side is closest to the base shaft 261 and the distance from the base shaft 261 is farther from the base end toward the right end side. Further, in the state shown in FIG. 8B, a gap sufficient for inserting the traction cord 51 is present between the meshing portion 264 and the facing piece 222. However, in the state shown in FIG. 12B, the gap between the meshing portion 264 and the facing piece 222 becomes narrow. At this time, the engagement portion 264 bites the traction cord 51 and prevents the traction cord 51 from moving in the left direction.

  By the way, in the stopper cam 260, when the base shaft 261 moves in the laterally long hole 244a, the engagement shaft 262 which is at a constant distance from the base shaft 261 also moves in the vertically elongated hole 244b. At this time, the engagement shaft 262 moves upward in the longitudinal hole 244b, but at this time, the carriage 240 moves in the left direction. Therefore, as shown in FIG. 12 (b), the meshing portion 264 of the stopper cam 260 approaches the facing piece 222 and clamps the pulling cord 51.

  Next, the guide groove 300 which constitutes the cam mechanism CM will be described. As described above, between the case 220 and the carriage 240, the cam mechanism CM configured of the sliding groove 226, the cam shaft 230, and the guide groove 300 is provided. Among these, the guide groove 300 is formed on the lower surface side of the guide plate portion 243 of the carriage 240, and is provided at a position where the cam shaft 230 enters. The guide groove 300 corresponds to the guide portion. Further, in the guide groove 300, the cam shaft 230 can move smoothly.

  FIG. 11 shows the shape of the guide groove 300 and the position of the cam shaft 230 in the guide groove 300. As shown in FIG. As shown in FIG. 11, the first land portion 310 and the second land portion 320 are provided on the lower surface side of the guide plate portion 243 so as to be surrounded by the guide groove 300. The cam shaft 230 slides in the guide groove 300 around the first land portion 310 and the second land portion 320. The first land portion 310 and the second land portion 320 are provided such that their surfaces have the same height as the lower surface of the guide plate portion 243, and the camshaft 230 is the surface of the first land portion 310 and the second It is arranged not to be located on the surface of the land portion 320.

  In addition, the first land portion 310 is provided in a substantially V shape (generally in the shape of a heart) in which a concave portion 311 opened to the left is present. In addition, the recessed part 311 is comprised by being enclosed by the wall surface 312 which comprises the 1st land part 310. As shown in FIG. In addition, the first land portion 310 is provided in a shape obtained by deforming a simple V-shape, thereby preventing the groove width of the guide groove 300 from being extended, and the cam shaft 230 in the guide groove 300. The guiding property of the

  Specifically, most parts of the first land portion 310 have wall surfaces that are inclined in the left-right direction and the front-rear direction, but the parts behind the first land portion 310 (upper part in the figure) There are wall surfaces 312a along the direction. Further, the left end portion of the rear (the upper side in the drawing) of the first land portion 310 and the left end portion of the front (the lower side in the drawing) of the first land portion 310 are provided to the extent that the camshaft 230 does not rattle while sliding.

  In addition, the second land portion 320 is provided in a substantially parallelogram shape. However, the wall surface 321 on the rear side (upper side in the drawing) of the second land portion 320 is provided so that the position in the left-right direction is approximately the same position with respect to the wall surface 312a on the rear side (upper side in the drawing) It is done. However, the wall surface 322 in front of the second land portion 320 (lower side in the drawing) is provided rearward (upper side in the drawing) than the wall surface 312 b in front of the first land portion 310 (lower side in the drawing). In particular, the wall surface 312 b is located at the same position in the front-rear direction with respect to the inner wall surface 304 opposed to the wall surface 322 or is located forward of the wall surface 304. By setting the position of the wall surface 304 with respect to the wall surface 312b to be such a position, it is possible to realize a released state in which the cam shaft 230 is positioned in the recess 311.

  Here, in the guide groove 300, a first loop groove 301 and a second loop groove 302 are provided so as to surround the first land portion 310 and the second land portion 320 described above. The first loop groove 301 is a loop in which the cam shaft 230 sequentially shifts to the first position p1, the second position p2, the third position p3, and the fourth position p4 in FIG. 11 and returns to the first position p1 again. It is a groove part to draw.

  The groove portion 302a (a portion not reaching the fifth position p5 and corresponding to a linear portion) in the front (the lower side in the drawing) of the second loop groove 302 is provided to be linear. That is, in the path from the first position p1 to the fifth position p5 in the second loop groove 302, the linear groove portion 302a and the upper left portion from the groove portion 302a (in FIG. There is a groove portion 302c).

  Further, in addition to the groove portion 302a, a groove portion 302b at the rear (upper side in the drawing) of the second loop groove 302 is also provided linearly, and the groove portion 302a and the groove portion 302b are parallel. Further, the direction in which the linear groove portions 302a and 302b extend is parallel to the direction in which the carriage 240 slides (left and right direction). However, the groove portion 302 a and the groove portion 302 b may not be parallel to each other. In addition, the directions of the groove portions 302a and 302b may not be parallel to the direction in which the carriage 240 slides (left and right direction).

  Further, in the guide groove 300, the groove portion from the fifth position p5 to the vicinity of the wall surface 312a via the fourth position p4 is provided linearly. That is, in the guide groove 300, a linear portion is present across the first loop groove 301 and the second loop groove 302. The linear portion includes a groove portion 302b on the rear side (upper side in the drawing) of the second loop groove 302 and a groove portion 301a in the vicinity of the wall surface 312a of the first loop groove 301. It is in an integral state.

  Note that, in the configuration shown in FIG. 11, the first position p1 is not present in the looped portion of the first loop groove 301, but is present in the portion protruding rightward from the looped portion. However, the portion projecting rightward may be included in the first loop groove 301 as well. The first position p1 corresponds to the lock position.

  On the other hand, the second loop groove 302 is a groove-shaped portion surrounding the periphery of the second land portion 320. The second loop groove 302 is continuous with the first loop groove 301. Therefore, when the cam shaft 230 slides on the guide groove 300, it slides smoothly without the sliding state being switched between the first loop groove 301 and the second loop groove 302. The second loop groove 302 may overlap with a part of the first loop groove 301.

  In the second loop groove 302, the cam shaft 230 passes from the second position p2 to the fifth position p5 through the groove portion 302a in front of the second loop groove 302 (lower side in the figure) and passes through the fifth position p5. Later, it reaches the fourth position p4 through the groove portion 302b at the rear (upper side in the drawing) of the second loop groove 302. Then, after the cam shaft 230 reaches the fourth position p4, the cam shaft 230 proceeds to the right of the first loop groove 301, and finally returns to the first position p1.

  The operation in the case where the cam shaft 230 exists at the first position p1 to the fifth position p5 in the configuration as described above will be described below. First, when the cam shaft 230 exists at the first position p1 (lock position) shown in FIG. 11, the pulling cord 51 is in a locked state held between the facing piece 222 and the meshing portion 264. The state of the cord stopper device 70 at this time is as shown in FIG.

  In this locked state, the movement of the pulling cord 51 in the left direction is blocked, and the movement of the curtain body 140 in the following direction in which the urging force is followed is restricted.

  The tow cord 51 is moved rightward from the first position p1 (the operation grip 40 is pulled downward or the moving rod is moved in the opening direction), and the cam shaft 230 is moved to the second position p2 in FIG. Let This is the case where the tow cord 51 has moved by a predetermined minimum moving amount R or more shown in FIG. If it is less than the predetermined minimum movement amount R, the blocking state of the first position p1 is returned to. The second position p2 corresponds to the case where the pulling cord 51 is not pulled long but pulled short (hereinafter referred to as short pulling), but the second position p2 is in front of the second loop groove 302 (downward in the drawing) (The state is FIG. 13). However, as the amount of movement of the traction cord 51 at this time, it is necessary that the center of the cam shaft 230 be positioned rearward (upper in the figure) than the front left end of the first land portion 310 in FIG. In this case, due to the frictional force between the guide plate portion 243 and the pressing portion 254, the carriage 240 also moves in the right direction. At this time, the stopper cam 260 shifts from the state shown in FIG. 12 (b) to the state shown in FIG. 13 (b) as the pull cord 51 moves in the right direction, and falls clockwise.

  Note that FIG. 13 shows a state in which the cam shaft 230 is positioned in the groove portion 302a of the second loop groove 302 closer to the fifth position p5 than the second position p2. FIG. 13 is a view showing the configuration of the cord stopper device 70 of the second embodiment, and FIG. 13 (a) is a plan view showing a state where the camshaft 230 is closer to the fifth position p5 than the second position p2. 13 (b) is a cross-sectional front view of the same state, and FIG. 13 (c) is a bottom view showing a state in which the case 220 is removed in the same state.

  With the cam shaft 230 positioned at the second position p2, when the operator stops pulling the operating grip 40 downward and releases the hand from the operating grip 40, the pulling cord 51 is moved to the left by the biasing force on the curtain body 140. Move in the direction. At this time, due to the frictional force between the guide plate portion 243 and the pressing portion 254, the carriage 240 is also moved in the left direction, and the carriage 240 is again housed inside the case 220. At this time, as shown in FIG. 11, the cam shaft 230 is relatively rightward in the guide groove 300. However, since the cam shaft 230 collides with the wall surface 312 constituting the first land portion 310 in this rightward movement, the cam shaft 230 enters the recess 311 without returning to the first position p1, and It will be in the state located in 3 position p3. The third position p3 corresponds to the release position.

  The position of the carriage 240 at this time is as shown in FIG. As shown in FIG. 8, the carriage 240 is positioned slightly to the right of the case shown in FIG. 12. Therefore, the base shaft 261 is not pushed by the holding piece 224, and the stopper cam 260 is in a state where it falls down. As a result, the movement of the pulling cord 51 is not blocked, and when the hand is released from the operation grip 40, the pulling cord 51 can be moved by the biasing force of the curtain body 140 in the closing direction.

  In a state where the cam shaft 230 is positioned at the third position p3 (release position) in FIG. 11, the operator holds the operation grip 40 and moves the operation grip 40 downward in FIG. Move to Then, due to the frictional force between the guide plate portion 243 and the pressing portion 254, the carriage 240 also moves in the right direction. At this time, as shown in FIG. 11, the cam shaft 230 is relatively rightward in the guide groove 300. When moving by the second displacement minimum movement amount T or more, at this time, the cam shaft 230 is in a state of being positioned at the fourth position p4 due to a collision with the wall surface 321 constituting the second land portion 320. The fourth position p4 may enter the groove portion 102b of the second loop groove 302 (FIG. 14 shows the state located at the leftmost position). In addition, if it is less than the 2nd displacement minimum movement amount T, it will return to the cancellation | release position p3.

  When the operator stops pulling the operation grip 40 downward and releases the hand from the operation grip 40 in the state of being positioned at the fourth position p4 in FIG. 11, the biasing force of the curtain main body 140 in the closing direction The tow cord 51 moves in the left direction. At this time, due to the frictional force between the guide plate portion 243 and the pressing portion 254, the carriage 240 also moves in the left direction, and the carriage 240 is again housed inside the case 220. At this time, the camshaft 230 is relatively rightward inside the guide groove 300, and returns to the first position p1 (lock position) in FIG. Therefore, the carriage 240 is again located at the position shown in FIG. 12 in the case 220, and the pulling cord 51 is in a locked state held between the facing piece 222 and the meshing portion 264.

  The above is the operation cycle in the case of performing the short pull. When the cam shaft 230 is at the first position p1 (lock position), the pulling cord 51 is locked (FIG. 12), and when the pulling cord 51 is pulled short therefrom, the cam shaft 230 moves to the second position p2 Then, when the hand is released from the operation grip 40, the cam shaft 230 is in the released state of the lock located at the third position p3 (release position) (FIG. 8). Thereafter, after the operation grip 40 is pulled to move the cam shaft 230 to the fourth position p4, when the hand is released from the operation grip 40, the cam shaft 230 is again in the locked state where it is positioned at the first position p1 (FIG. 12) .

  By the way, in the locked state of the pulling cord 51 as shown in FIG. 12, when the operation grip 40 is pulled long (hereinafter referred to as long pulling), the cam shaft 230 starts from the first position p1 inside the guide groove 300. The predetermined long movement amount S of FIG. 11 is moved to the fifth position p5. The fifth position p5 is a portion of the guide groove 300 located on the most left end side, and corresponds to the bypass position. The fifth position p5 (detour position) is as follows. That is, when the cam shaft 230 is positioned at the fifth position p5 (detour position), when the cam shaft 230 relatively moves rightward in the guide groove 300, the front groove portion 302a of the second loop groove 302 Without passing through, the rear groove portion 302b is passed to the first position p1. The position described above is the position (detour position) of the fifth position p5.

  The position of the carriage 240 when the camshaft 230 is at the fifth position p5 is as shown in FIG. FIG. 14 is a view showing the configuration of the cord stopper device 70, where (a) is a plan view showing the state when the cam shaft 230 is at the fifth position p5, and (b) is a sectional front view of the same state (C) is a bottom view which shows the state which removed case 220 in the same state.

  When the pulling cord 51 is pulled long in the locked state of the pulling cord 51 (FIG. 12), the cam shaft 230 moves to the position shown in FIG. 14 and the cam shaft 230 moves from the first position p1 (locked position) to the first position. 5 Move to position p5 (detour position). Thereafter, when the operator releases the hand from the operation grip 40, the pulling cord 51 is moved leftward by the biasing force of the curtain body 140 in the closing direction. At this time, due to the frictional force between the guide plate portion 243 and the pressing portion 254, the carriage 240 also moves in the left direction. As a result, the cam shaft 230 is located at the first position p1 in the guide groove 300, and is in a locked state in which the traction cord 51 is sandwiched between the meshing portion 264 and the facing piece 222. Thereby, the movement of the traction cord 51 in the left direction is blocked, and tracking of the biasing force of the curtain body 140 in the closing direction is restricted.

  As described above, when the pulling cord 51 is extended, an operation cycle different from that in the case where the shortening is performed can be realized. In this case, when the cam shaft 230 is at the first position p1 (lock position), the pulling cord 51 is locked (FIG. 12), and when the pulling cord 51 is pulled from there, the cam shaft 230 is at the fifth position p5 14), and then release the operation grip 40, the camshaft 230 is positioned at the first position p1 (lock position), and the traction cord 51 is locked. (Figure 12).

  In each of the above-mentioned embodiments, although the carriages 150 and 240 having a specific shape have been described, other forms such as provision of wheels and the like may be employed. In addition, the guide groove 300 can be realized in various realization examples as long as the above-described effects are produced.

Second Embodiment
Next, the structure of the accordion curtain 1 which comprises the shielding apparatus of 2nd Embodiment by this invention is demonstrated. The shielding device according to the second embodiment described below is configured to suspend and support the shielding material (curtain material 65) openably and closably using the leading runner 4 movable in the hanger rail 2. FIG. 15 is a front view showing an entire configuration of an accordion curtain 1 constituting a shielding device of a second embodiment according to the present invention. In FIG. 15, the same components as those of the first embodiment shown in FIG. 1 are denoted by the same reference numerals. In the second embodiment, the arrangement position of the cord stopper device 70 is different from that of the first embodiment, and the other components function in the same manner.

(Code stopper device)
A cord stopper device 70 of an example of a shielding device according to a second embodiment of the present invention will be described with reference to FIGS. 15 to 20. FIG. 16 is an exploded perspective view showing a schematic configuration of a clutch mechanism 74 in the cord stopper device 70 of one example of the accordion curtain 1 constituting the shielding device of the second embodiment according to the present invention. FIG. 17 is a transparent perspective view showing a schematic configuration of the slider 71 in the cord stopper device 70 of one example of the accordion curtain 1 constituting the shielding device of the second embodiment according to the present invention. FIG. 18 (a) is a front view showing a schematic configuration of the cord stopper device 70 of one example in the accordion curtain 1 constituting the shielding device of the second embodiment according to the present invention, and FIG. 18 (b) is a front view It is a sectional view showing a schematic structure of cord stopper device 70 of an example. FIG. 19 is an explanatory view of a guide groove 747 in the cord stopper device 70 of one example in the accordion curtain 1 constituting the shielding device of the second embodiment according to the present invention. FIGS. 20 (a), (b) and (c) show the embodiment of the cord stopper device 70 of the embodiment of the accordion curtain 1 of the second embodiment according to the present invention. It is an explanatory view explaining a state.

  The cord stopper device 70 of the present embodiment is configured to include a slider 71 and a clutch mechanism 72, as shown in FIG. The slider 71 has a pulley 76 rotatable in the moving direction of the traction cord 51, and has a function of pressing the pulley 76 against the traction cord 51 by the biasing force of a spring (compression spring) 73 (see FIG. 15). The clutch mechanism 72 has a drum 74 rotatable in the moving direction of the pulling cord 51 (as will be described later, the drum 74 has a double drum structure of a rotating drum 74 a and a brake drum 74 b). The drum 74 has a clutch operation function of blocking or permitting movement of the traction cord 51 in accordance with predetermined movement of the operation cord 42. Further, the drum 74 is disposed on the opposite side of the pulley 76 with respect to the pulling cord 51 (see FIG. 15). The clutch mechanism 72 of this embodiment is fixed to the fixed rod 8, and the slider 71 is guided relative to the clutch mechanism 72 so as to be movable in the left-right direction. Therefore, the traction cord 51 inserted between the pulley 76 and the drum 74 is pressed by the biasing force of the spring 73.

  First, the clutch mechanism 72 of this embodiment will be described with reference to FIG. The drum 74 of the clutch mechanism 72 has a substantially cylindrical shape and has a double drum structure, and the rotary drum 74a is positioned on the outer side in contact with the pulling cord 51, and the brake drum 74b is positioned on the inner side. There is. The outer surface of the rotating drum 74a has a high friction surface shape 746, and the inner surface has a high sliding surface shape. Further, on the inner surface of the rotary drum 74a, a guide groove 745 for guiding the movement of the clutch ball 75 in the axial direction of the rotary drum 74a (that is, the longitudinal direction of the accordion curtain 1) is provided. Further, the outer surface of the brake drum 74b also has a highly slidable surface shape, and a guide groove 747 is formed on the surface.

  In assembling the drum 74, first, the clutch ball 75 is placed at an arbitrary position of the guide groove 747 of the brake drum 74b, the position of the guide groove 745 is aligned with the position of the clutch ball 75, and the brake drum 74b is placed inside the rotary drum 74a. To accommodate. Subsequently, the position of the guide groove cover 744 of the drum cap 741 is aligned with the position of the guide groove 745 of the rotary drum 74a, and the fitting projection 742 of the drum cap 741 and the fitting receiver 743 of the rotary drum 74a are By fitting them, the drum cap 741 is fitted to and integrated with the rotating drum 74a. In the drum 74 configured in this way, the rotary drum 74a can be rotated relative to the brake drum 74b by allowing the clutch ball 75 to move on the guide groove 747 while being restricted by the guide groove 745. It has become.

  The central shaft portion 748 and the guide shaft portion 749a respectively provided on both side surfaces of the brake drum 74b from the substantially circular side surfaces of the drum 74 integrated when the drum cap 741 is fitted to the rotary drum 74a. Are configured to protrude. The substantially cylindrical central shaft portions 748 are respectively provided on both side surfaces on the central axis of the brake drum 74b. Further, the substantially cylindrical guide shaft portions 749a are provided on both sides on an axis substantially parallel to the central axis, at a position between the central axis of the brake drum 74b and the outer periphery thereof.

  Here, in the cord stopper device 70 of the present embodiment, although the central shaft portion 748 and the guide shaft portion 749a have substantially the same diameter, the length of the substantially cylindrical shape of the guide shaft portion 749a is the central shaft portion 748. In a state where the central shaft 748 is engaged with the engagement groove 725 provided in the side wall of the main body of the clutch mechanism 72, the guide shaft 749a engages with the engagement guide groove 724, which is shorter than the substantially cylindrical shape. (The guide shaft portion 749a engages only with the substantially hook-like engagement groove 713a of the slider 71). Therefore, in this state, the brake drum 74b is rotatably supported relative to the clutch mechanism 72.

  Then, as shown in FIG. 16, the center shaft 748 and the guide shaft 749 a are engaged with the guide groove for engagement so that the center shaft 748 engages with the engagement groove 725 provided in the side wall of the main body of the clutch mechanism 72. In accordance with 724, the drum 74 is accommodated in the accommodation portion 723 from the upper side of the main body of the clutch mechanism 72. The state in which the central shaft portion 748 of the drum 74 is engaged with the engagement groove 725 of the clutch mechanism 72 is not easily removed unless it is intentionally removed.

  Further, on one side surface of the clutch mechanism 72, there is provided a fixing base portion 721 which can be fixed to the fixing rod 8 through the mounting hole 722 by a predetermined mounting screw, and the fixing base portion 721 is provided with a spring (compression Projections 726 for compression spring for positioning and engaging the spring 73 are provided at two places. Further, each spring 73 positioned on each compression spring projection 726 positions and engages also on the compression spring projection 715 on the slider 71 side, which is disposed and engaged in the inside of the clutch mechanism 72. Thus, side wall openings 727 are provided at two positions in the side wall of the clutch mechanism 72.

  The clutch mechanism 72 accommodating the drum 74 in this manner is provided with a cord insertion opening 728 for enabling the pulling cord 51 to be inserted in the vertical direction. Further, each of the front and rear side wall portions of the clutch mechanism 72 has an engagement hole 729 for engaging with the engagement projection 714 on the slider 71 side in such a manner as to allow relative movement of the slider 71 in the left and right direction. Two places are provided.

  Next, the slider 71 of the present embodiment will be described with reference to FIG. The slider 71 has a pulley 76 inside. The pulley 76 is rotatably installed by engaging its rotation shaft 76 a with an engagement groove 712 provided on the inner wall side of the slider 71. The slider 71 has a space 711 capable of accommodating the drum 74 therein, and the side wall of the slider 71 is formed inside the clutch mechanism 72.

  In addition, each of the front and rear side wall portions of the slider 71 has an engagement projection for engaging with the engagement hole 729 of the clutch mechanism 72 in a mode that enables relative movement of the slider 71 in the left-right direction with respect to the clutch mechanism 72. Two parts 714 are provided. The slider 71 is configured to engage the relative movement of the slider 71 in the lateral direction with respect to the clutch mechanism 72 with respect to the engagement groove 713a whose guide shaft portion 749a has a substantially hook shape, but the center The shaft portion 748 is configured to be engaged with the substantially hook-like engagement groove 713a so as not to allow the relative movement. The operation of the brake drum 74b in this case will be described in detail later.

  Also, each spring 73 positioned on each compression spring projection 726 in the clutch mechanism 72 can be biased to press the slider 71 through the side wall opening 727 of the clutch mechanism 72, Projections 715 for compression spring are provided at two places for positioning and engaging the springs 73 on one side wall of the slider 71.

  The slider 71 which can accommodate the drum 74 of the clutch mechanism 72 in the space 711 has the upper opening 717 and the bottom opening 718 for enabling the pull cord 51 to be inserted in the vertical direction. Is provided.

  Thus, by engaging the slider 71 and the clutch mechanism 72, the cord stopper device 70 of the present embodiment is configured as shown in FIG. Then, as shown in FIG. 18A, in the cord stopper device 70 of the present embodiment, the guide shaft 749a does not engage with the engagement guide groove 724, and the substantially hook-like engagement groove 713a of the slider 71 is engaged. To engage. The brake drum 74b having the central shaft portion 748 engaged with the engagement groove 725 is supported so as to be slightly rotatable relative to the clutch mechanism 72 by the action of the guide shaft portion 749a and the engagement guide groove 724. The mechanism 72 is fixed to the fixing rod 8 by the fixing base portion 721. The engagement projection 714 is engaged with the engagement hole 729 in such a manner as to allow relative movement of the slider 71 in the left and right direction, and the biasing force of the spring 73 urges the slider 71 in the right direction as illustrated. As a result, as shown in FIG. 18B, the traction cord 51 is pressed in a state of being inserted between the pulley 76 and the drum 74 (the rotary drum 74a and the brake drum 74b sandwiching the clutch ball 75). . Thereby, along with the movement action of the traction cord 51 passing through the inside (that is, according to the movement action of the operation cord 42 by the operation of the operator), the movement state of the traction cord 51 is permitted or the movement state thereof It is possible to configure a clutch operation that switches whether to lock to block.

  Next, the operation of the clutch ball 95 and the guide groove 747 for realizing the clutch operation will be described. The clutch ball 95 and the guide groove 747 related to the clutch operation are configured as, for example, a winding shaft in place of the rotating drum 74a, and a pulling-up groove and a drawing-down groove instead of a moving groove 747a described later. The contents may be the same as those disclosed in Japanese Patent Application Publication No. Gazette No. 3 or the patent No. 3124716 specification. Here, the clutch operation of the cord stopper device 70 of the present embodiment configured by applying this technique will be described with reference to FIG.

  As described above, the clutch ball 75 is disposed at a position between the inner surface of the rotary drum 74a and the outer surface of the brake drum 74b. Therefore, on the inner surface of the rotary drum 74a, the axial direction of the rotary drum 74a That is, a guide groove 745 for guiding the movement of the clutch ball 75 is provided on the accordion curtain 1 in the front-rear direction. Further, on the outer surface of the brake drum 74b, a guide groove 747 for applying the clutch operation is provided. FIG. 19 shows a developed state of one rotation of the outer surface of the brake drum 74b. In FIG. 19, when the operation cord 42 is pulled down against the biasing force of the coil spring 64 by the operation grip 40 and the traction cord 51 moves in the upward movement direction (opening direction of the curtain member 65), the clutch ball 75 When the tow cord 51 is moved downward by the biasing force of the coil spring 64 by moving in the direction of arrow A and releasing the operation grip 40, it moves in the direction of arrow B.

  The guide groove 747 is formed with a moving groove 747a that does not restrict the movement of the clutch ball 75 and a stop groove 747b that restricts the movement of the clutch ball 75 along the rotational direction of the drum 74, from the stop groove 747b to the moving groove 747a. A return groove 747c is formed on which the clutch ball 75 can move.

  Therefore, the clutch ball 75 is movably guided in the guide groove 747 of the brake drum 74b in a state where it is restricted by the guide groove 745 of the rotary drum 74a.

  When the operation grip 42 pulls down the operating cord 42 against the biasing force of the coil spring 64 to describe the operation, the moving groove 747a (clutch ball 75 of which the clutch ball 75 forms a part of the guide groove 747) The rotary drum 74a is allowed to rotate in the direction (the opening direction of the curtain member 65) in which the pulling cord 51 passing through the inside of the cord stopper device 70 moves upward while circulating around the inside of the groove that does not restrict movement. Here, if the operating grip 40 is released from the state where the clutch ball 75 is positioned in the moving groove 747a, the direction in which the traction cord 51 moves downward by the biasing force of the coil spring 64 (closing direction of the curtain member 65) When the clutch ball 75 moves into the stop groove 747b (the groove for restraining the movement of the clutch ball 75) constituting a part of the guide groove 747 and engages with the end point portion 747d in the stop groove 747b, The rotation of the rotary drum 74a is blocked, and the curtain member 65 is stopped at the desired position.

  Subsequently, from the state where the clutch ball 75 is engaged with the end point portion 747d and the curtain member 65 is stopped at the desired position, the operating grip 40 slightly opposes the operating cord 42 against the biasing force of the coil spring 64. After the pull-down rotary drum 74a is rotated within the range of a predetermined angle, if the operation grip 40 is released, the pulling cord 51 moves downward (closing direction of the curtain member 65) by the biasing force of the coil spring 64. Then, the clutch ball 75 moves to the moving groove 747a through the return groove 747c, and along with the rotation of the rotary drum 74a, the clutch ball 75 circulates in the moving groove 747a, and the curtain member 65 is closed. Move automatically.

  Further, when the operation cord 42 is further pulled down against the biasing force of the coil spring 64 from the state where the curtain member 65 is stopped at the desired position, and the rotary drum 74a is rotated by a predetermined angle or more, the clutch ball 75 By moving from the stop groove 747b to the inside of the moving groove 747a through the return groove 747c and permitting rotation of the rotary drum 74a, releasing the operation grip 40 in this state causes rotation of the rotary drum 74a by the biasing force of the coil spring 64. The clutch ball 75 moves into the stop groove 747b, and the movement of the curtain member 65 is stopped.

  However, in the cord stopper device 70 of the present embodiment, the guide shaft portion 749a does not engage with the engagement guide groove 724, and is engaged only with the substantially hook-like engagement groove 713a of the slider 71. Therefore, as compared with the state where the slider 71 is incorporated in the clutch mechanism 72 (see FIG. 20A), the rotating drum 74a slightly rotates at the time of locking in the clutch operation, and the rotation drum 74a rotates. Along with this, the central shaft portion 748 and the guide shaft portion 749a are guided by the substantially wedge-shaped engagement groove 713a, and the drum 74 itself rotates relative to the clutch mechanism 72 (see FIG. 20C). That is, at the time of locking in the clutch operation, the central shaft portion 748 and the guide shaft portion 749a function to pull the slider 71.

  Such a function of the central shaft portion 748 and the guide shaft portion 749a is at the time of driving that allows the movement state of the pulling cord 51 (see FIG. 20B) and at the time of locking that prevents the movement state (FIG. ), And at the time of locking, the central shaft 748 and the guide shaft 749a function to pull the slider 71 as compared with the time of driving, and the traction cord 51 includes the pulley 76 and the drum 74. Assist the biasing force to press between.

  Therefore, according to the cord stopper device 70 of the present embodiment configured as described above, the locking device (for example, the accordion curtain 1) in which the driving of the curtain main body 140 is smoothed by the predetermined cord Since it acts to assist the biasing force, it is possible to suppress an increase in the operating force of the operator and maintain good operability.

  In the description of this embodiment, the clutch mechanism 72 is fixed to the fixed rod 8 and the slider 71 is configured to be slidable relative to the clutch mechanism 72. However, the slider 71 is fixed to the fixed rod 8; It is also possible to configure the clutch mechanism 72 so as to be slidable with respect to the slider 71. In addition, in the case where the application of the urging force of the spring 73 at the time of locking is not required, the brake drum 74b of the drum 74 can be non-rotatably supported with respect to the clutch mechanism 72.

  According to the cord stopper device 70 of each embodiment as described above, the operation of (1) pinching (lock state) → (long pull) → pinching (lock state) with respect to the pulling cord 51, and (2) It is possible to realize an operation of holding (lock state) → (short pull) → release (release state). For this reason, when performing position adjustment of the curtain main body 140, position adjustment of the curtain main body 140 can be easily performed by operating like (1).

  Furthermore, in the description of each example in the above-described embodiments, an example in which the cord stopper device 70 performs the clutch operation for the traction cord 51 has been described. However, the code for performing the clutch operation for the operation cord 42 The stopper device 70 may be disposed.

  Moreover, although the example which diverts the movement of the operation cord 42 in the operation unit 6 using the operation pulley 43 was demonstrated in each above-mentioned embodiment, it is not this limitation. For example, FIG. 21 shows a modification of the operation unit 6. Fig.21 (a) is a plane transparent view of the operation unit 6 of a modification, (b) is a cross-sectional side view of the operation unit 6 of a modification. The operation unit 6 has a fixing portion 6 b fixed to the upper end portion of the hanger rail 2, and the fixing portion 6 b is formed in a shape that matches the upper surface shape of the hanger rail 2. In addition, a convex cavity 6 a formed in the lower central portion of the operation unit 6 is formed to install the pulley 27. Referring to FIGS. 21 (a) and 21 (b), the operation unit 6 of this modification is configured to provide a guide plate 601 instead of the operation pulley 43. The guide plate 601 is fixed to the inner wall 6c formed in the operation unit 6 in accordance with the turning of the operation cord 42, and a locking portion 601a is provided on the proximal end side in order to stabilize the fixing to the inner wall 6c. The tip end side is hooked to the inner wall 6c. For the guide plate 601, it is preferable to use, for example, stainless steel, ceramic or the like, which is excellent in durability and slidability.

  As described above, by using the guide plate 601 instead of the operation pulley 43, the accommodation volume can be reduced, and the operation cord 42 can be turned to the central position of the main body of the operation unit 6 Do. That is, since the other ends of the two operation codes 42 shifted to the center position of the main body of the operation unit 6 are attached to the code equalizer 9, the code equalizer 9 does not have to do with the operation unit 6 shown in FIG. It is possible to suppress movement blurring in the front and back direction.

  Further, in each of the embodiments described above, as shown in FIG. 22A, the pulling force is resisted against the biasing force Fr in the closing direction of the coil spring 64 provided in the expansion and contraction mechanism including the X-shaped link piece 60. The cord 51 and the cord for closed loop 26 constitute a closed loop related to the opening operation, and by pulling the operating grip 40 downward, the operating cord 42 connected to the closed loop is pulled in, and the movement 框 7 Are configured to move the traction cord 51 connected thereto. That is, since the opening operation is performed only by pulling the operation grip 40 downward, and the closing operation is configured by the biasing force of the coil spring 64 or the like, the operability is improved.

  In order to realize such a configuration, in the example shown in FIG. 22A, the operation cord 42 and the traction cord 51 are inserted through the bracket 15 between the upper surface of the hanger rail 2 and the mounting surface, and However, instead of this, as shown in FIG. 22 (b), the pull cord 51 connected to the operation cord 42 can be inserted into the inside of the hanger rail 2 to form the closed loop. The connection between the operation code 42 and the traction code 51 may be configured to be directly connected, regardless of the form of the code equalizer 9 described above. Therefore, the hanger rail 2 can be configured to be fixed directly to the mounting surface without using the bracket 15.

  Further, the closed loop cord 26 is connected to the leading runner 4 fixed to the upper end of the moving rod 7 along with the movement of the moving rod 7 in the left direction, thereby assisting the movement of the code equalizer 9 to the right. It is advantageous to the improvement of operability in that it becomes to cooperate. However, as shown in FIGS. 23 (a) and 23 (b), which can be compared with FIGS. 22 (a) and 22 (b), respectively, it may be unnecessary in applications where the closed loop cord 26 is not required. An open loop for the opening operation is constituted only by the pulling cord 51 connected to the operation cord 42 against the biasing force Fr in the closing direction of the coil spring 64 provided in the extension mechanism consisting of the X-shaped link piece 60 It is also possible.

Third Embodiment
(Curtain rail that constitutes the shielding device)
Next, the structure of the curtain rail which comprises the shielding apparatus of 3rd Embodiment by this invention is demonstrated as a representative example which does not utilize a crucible. The shielding device of the third embodiment described below is configured to suspend and support the shielding material (curtain material 507) openably and closably using the leading runner 504 movable in the hanger rail 2. FIG. 24 is a front view showing the overall configuration of a curtain rail 500 constituting the shielding device of the third embodiment according to the present invention, and FIG. 25 is a plan view thereof. FIG. 26 is a conceptual view of the curtain rail 500 shown in FIG. 24 and FIG. Fig.27 (a) is a cross-sectional front view which shows the structure of the 1st unit 502 in the curtain rail 500 which comprises the shielding apparatus of 3rd Embodiment by this invention, FIG.27 (b) is 3rd implementation by this invention It is a bottom view of the 1st pulley 512 in the 1st unit 502 in curtain rail 500 which constitutes the form shielding device.

  As shown in FIGS. 24 and 25, the curtain rail 500 according to the present embodiment includes, as main components, a hanger rail 501, a first unit 502, a second unit 503, a leading runner 504, and a curtain member 507. An operation code 509 (a first operation code 509a and a second operation code 509b), a drive unit 511, and an endless belt 514 are main components.

  The hanger rail 501 is a substantially square tubular member whose lower end side is opened so that the leading runner 504 (follower runner 505) for suspending and supporting the shielding material (the curtain member 507) can move. The upper end surface of the hanger rail 501 is fixed to the mounting surface on the ceiling side. The leading runner 504 and the driven runner 505 are configured to suspend and support the curtain material 507 via the curtain hook 506 and to be able to move inside the hanger rail 501.

  The first unit 502 is fixed to one end of the hanger rail 501. A cylindrical first pulley 512 is provided inside the first unit 502, and an endless belt 514 is wound around. In addition, a drive unit 511 is provided at the lower end portion of the first unit 502, and is integrally formed in a substantially cylindrical shape as a whole.

  The second unit 503 is fixed to the other end of the hanger rail 501. A cylindrical second pulley 513 is provided inside the first unit 502, and an endless belt 514 is wound around. The endless belt 514 is configured to prevent slippage between the first pulley 512 and the second pulley 513.

  The leading runner 504 suspends and supports the curtain member 507 and is configured to be movable inside the hanger rail 501. Further, the leading runner 504 has a leading runner fixing portion 504a fixed to a part of the endless belt 514, whereby the leading runner 504, the endless belt 514, the first pulley 512 and the second pulley 513 are wound and driven. It is configured as a mechanism.

  The curtain material 507 is suspended and supported by the leading runner 504 and the follower runner 505 via the curtain hook 506 and is along the outer peripheral surface of the substantially cylindrical drive unit 511 integrated with the first unit 502. It is configured to be taken up when the curtain material 507 is opened.

  In the operation code 509, two first operation codes 509a and second operation codes 509b are formed from one code via the operation code fixing portion 515 which is fixed to a part of the endless belt 514 (hereinafter referred to as a summary) And simply referred to as "operation code 509"). The first operation cord 509a extending from the operation cord fixing portion 515 along the endless belt 514 turns downward by the first lead-out hole 510a in the second unit 503 and hangs downward, and the end thereof is the first operation grip 508a. Attached to the Further, the second operation cord 509b extending from the operation cord fixing portion 515 along the endless belt 514 turns downward by the second lead hole 510b in the second unit 503 and hangs downward, and the end thereof is the second operation. It is attached to the grip 508b. Hereinafter, the first operation grip 508a and the second operation grip 508b are collectively referred to as the operation grip 508.

  The drive unit 511 has a substantially cylindrical shape, and is integrally fixed to the first unit 502. However, as shown in FIG. 27 (a), inside the drive unit 511, a rotary plug 517a rotatably configured with a substantially cylindrical center as a support shaft at its upper end side and a lower end side thereof A fixed plug 517 b configured to be rotatable and a torsion coil spring 516 are accommodated. The rotating plug 517a is connected to the lower surface central portion of the first pulley 512 via the rotating shaft portion 525 extending upward from the upper surface central portion, and the rotating plug 517a can also be rotated as the first pulley 512 rotates. ing. However, since the upper end portion of the torsion coil spring 516 is attached to the rotation plug 517a and the lower end portion of the torsion coil spring 516 is fixed by the fixing pin 519, the rotation of the rotation plug 517a, that is, the first pulley The rotation of 512 is configured to be accompanied by the biasing force of the torsion coil spring 516.

  That is, the torsion coil spring 516 is attached in the drive unit 511 in a saturating state so as to have a biasing force sufficient to bring the curtain member 507 from the fully closed state to the fully open state by the first pulley 512. There is. In the curtain rail 500 of this embodiment configured in this way, as in the first and second embodiments described above, the opening operation is performed only by pulling the operation grip 508 downward, and the closing operation is twisted. Since the configuration is based on the biasing force of the coil spring 516, the operability is improved.

  Further, as shown in FIG. 27A, a slide groove 522 for restricting the clutch ball 524 is formed in the inner bottom portion of the first unit 502, and a first member facing the inner bottom portion of the first unit 502 is further formed. As shown in FIG. 27B, a guide groove 523 for guiding the movement of the clutch ball 524 is formed on the bottom surface of the pulley 512. The clutch ball 524, the slide groove 522 and the guide groove 523 constitute a clutch mechanism 521.

  Hereinafter, the operation of the clutch mechanism 521 will be described with reference to FIGS. 28 to 31. FIG. 28 is an explanatory view at the time of the stop state of the clutch operation in the first unit 502 of the curtain rail 500 constituting the shielding device of the third embodiment according to the present invention. FIG. 29 is an explanatory view of a short pull operation of the clutch operation in the second unit 503. FIGS. 30 and 31 are explanatory views of the first and second extension operations of the clutch operation in the second unit 503, respectively.

  First, in FIG. 28, when the operation grip 508 is pulled downward against the biasing direction (direction A) of the first pulley 512 corresponding to the automatic closing operation of the curtain material 507, the pulling operation direction (direction B) It is illustrated that the first pulley 512 is rotated according to the operation of the curtain 507 in the opening direction. Therefore, first, when the clutch ball 524 is present in the pocket portion 523a (lock position) located at the center of the substantially heart shape shown in FIG. 28, the rotation of the first pulley 512 is stopped and the movement of the endless belt 514 is accompanied accordingly. Because the operation code 509 is locked, the operation code 509 is locked.

(When shorting operation)
Next, as shown in FIG. 29, the operator pulls the operation grip 508 after pulling the operation code 509 in the opening direction from the stop time in the opening direction with a displacement minimum displacement R and less than S as a short pulling operation from the stop time. When pulling is stopped downward and the hand is released from the operation grip 508, the clutch ball 524 located in the pocket portion 523a (lock position) passes the release groove 523b and exceeds the boundary Bd1 with the outer groove 523c, and the outer groove 523c. Thus, the rotation of the A direction is permitted, and the biasing force of the torsion coil spring 516 causes the curtain member 507 to automatically close. In FIG. 29, Mo indicates the relative movement path direction of the clutch ball 524 during the automatic closing operation in the outer groove 523c, and the first pulley 512 is rotated by the biasing force of the torsion coil spring 516 until the fully closed state is achieved. . When the operator directly operates the curtain member 507 in the opening direction without using the operation grip 508 or pulls the leading runner 504 in the opening direction with the baton, the operation is the same as the operation using the operation grip 508. Keep in mind that.

(At the time of the first extension operation)
On the other hand, as shown in FIG. 30, as the first long pulling operation from the time of stopping, when the operation code 509 is continuously pulled in the opening direction from the time of stopping exceeding the displacement minimum movement amount R, the pocket portion 523a (lock position) The clutch ball 524 located on the rear of the outer groove 523c passes over the release groove 523b, passes over the boundary Bd1 with the outer groove 523c, and goes around the outer groove 523c. Further, when the extension movement amount S or more is pulled, the clutch ball 524 passes from the outer groove 523c via the lead-in groove 523d, passes the boundary Bd2, and enters the inner groove 523e. In this state (i.e., a state in which the operation code 509 is pulled in the opening direction from the stop time by the long pulling movement amount S or more), the operator stops pulling the operation grip 508 downward and releases the hand from the operation grip 508. The clutch ball 524 in the groove 523e is stopped at the pocket portion 523a (lock position) via the lead-in groove 523f. Therefore, as the first long pulling operation from the time of stopping, if the hand is pulled beyond the displacement minimum moving amount R, and pulled after pulling out the long moving amount S or more, this hand is released to restrain rotation in the A direction. The movement of the curtain material 507 is stopped on the way. In FIG. 30, Mi indicates the relative movement path direction of the ball when the pulling operation is performed by S or more and the hand is released to shift to the movement in the closing direction.

(During second extension operation)
Further, as shown in FIG. 31, as the second long pulling operation from the time of stopping, when the operation code 509 is continuously pulled in the opening direction from the time of stopping exceeding the displacement minimum movement amount R, the pocket portion 523a (lock position) The clutch ball 524 located on the rear of the outer groove 523c passes over the release groove 523b, passes over the boundary Bd1 with the outer groove 523c, and goes around the outer groove 523c. Further, when the extension movement amount SS or more is pulled, the clutch ball 524 passes from the outer groove 523c via the lead-in groove 523d and passes over the boundary Bd2 and enters the inner groove 523e. In this state (that is, in a state where the operation code 509 is pulled in the opening direction by a long pulling movement amount S or more from the stop time), the operator stops pulling the operation grip 508 downward and releases the hand from the operation grip 508. As in the case of the long extension operation 1, the clutch ball 524 in the inner groove 523e is stopped at the pocket portion 523a (lock position) via the lead-in groove 523f. Therefore, as a second long pulling operation from the time of stopping, if the hand is pulled beyond the displacement minimum moving amount R and continues pulling it after pulling out the extended moving amount SS or more, this hand is released to restrain rotation in the A direction. The movement of the curtain material 507 is stopped on the way.

  According to the clutch mechanism 521 configured as described above, (1) pinching (locking state) → (long pulling) → pinching (locking state) with respect to the operation cord 509 (or the operation grip 510) by devising the guide groove 523 And (2) gripping (lock state) → (short pull) → release (release state). For this reason, when performing position adjustment of the curtain material 507, it is possible to further prolong and stop from the stop state in the middle of a curtain rail by operating like (1), Position adjustment can be easily performed.

Fourth Embodiment
(Curtain rail that constitutes the shielding device)
Next, the structure of the curtain rail which comprises the shielding apparatus of 4th Embodiment by this invention is demonstrated. The fourth embodiment described below is a modification of the curtain rail 500 which constitutes the shielding device of the third embodiment. FIG. 32 is a conceptual view of a curtain rail 500 constituting the shielding device of the fourth embodiment. Moreover, FIG.33 and FIG.34 is explanatory drawing regarding the structure of the curtain rail 500 which comprises the shielding apparatus of 4th Embodiment by this invention. Similar components are denoted by the same reference numerals.

  First, referring to FIG. 32, the curtain rail 500 of the fourth embodiment is an example in which a gear mechanism is provided in the second unit 503 in the third embodiment.

  That is, compared with the third embodiment, the second unit 503 in the curtain rail 500 of the fourth embodiment has a substantially cylindrical area in which the endless belt 514 is wound instead of the substantially cylindrical second pulley 513. The second pulley 513a is different in that a second pulley 513a having a driven bevel gear 540 at its lower end is provided.

  Further, as compared with the third embodiment, as a gear mechanism, instead of the first lead-out hole 510a and the second lead-out hole 510b, a first operation pulley 550a, a first bevel gear 551a, a second operation pulley 550b, and a first The difference is that a bevel gear 551 b is provided. However, also in the fourth embodiment, as in the first and second embodiments described above, the opening operation is performed only by pulling the operation grip 508 downward, and the closing operation is performed by the biasing force of the torsion coil spring 516. The gear mechanism further improves operability.

  More specifically, first, referring to FIG. 33A, the operation code 509 (a first operation code 509a and a second operation code 509b) of this example is configured by a ball chain. In the fourth embodiment, the first operation pulley 550a, the first bevel gear 551a, the second operation pulley 550b, and the first bevel gear 551b are accommodated in the second unit 503, and miniaturization is realized.

  Then, referring to the AA 'cross-sectional plan view in FIG. 33B, the second operation code 509b extending from the operation code fixing portion 515 along the endless belt 514 is a second operation code wound around the endless belt 514. The second operation pulley 550b provided with irregularities according to the shape of the ball portion 535 of the ball chain is detoured around the outer periphery side of the 2 pulley 513a, and the direction is turned downward to hang downward, and its end portion Is attached to the second operation grip 508b.

  Further, referring to the BB ′ cross-sectional plan view in FIG. 33C, the first operation cord 509a extending from the operation cord fixing portion 515 along the endless belt 514 is a third operation cord wound with the endless belt 514. 1 At the side portion of the pulley 513a, it is wound around the first operation pulley 550a provided with asperities in accordance with the shape of the ball portion 535 of the ball chain, and it is turned downward and hangs downward, and its end portion is the first It is attached to the operation grip 508a.

  34A, the first bevel gear 551a rotatable in conjunction with the first operation pulley 550a is provided at the lower end portion of the second pulley 513a. It is configured to mesh with the driven bevel gear 540. Similarly, the second bevel gear 551 b rotatable in conjunction with the second operation pulley 550 b is also configured to mesh with the driven bevel gear 540.

  Therefore, as shown in FIGS. 32 and 34 (b) and (c), the rotation directions of the first operation pulley 550a and the second operation pulley 550b are opposite to each other, but the first operation grip 508a and the second The first operation pulley 550a and the second operation pulley 550b are configured to rotate in the opening direction of the curtain member 507 by the pulling operation of the operation grip 508b.

  Therefore, compared with the third embodiment having no gear mechanism, the first bevel gear 551a, the second bevel gear 551b, and the driven bevel gear 540 are set to be equal to or more than the pulling operation amount at the time of the pulling operation of the third embodiment. By setting the gear ratio, the pull operation force can be reduced more than in the third embodiment, and the operability can be improved.

  Moreover, it is also possible to make such a gear mechanism into a multistage structure, and to reduce pull operation force.

  Furthermore, one end of each of the first and second operation cords 509a and 509b is attached to the respective operation grip 508a and 508b, and the other end of each of the first and second operation cords 509a and 509b is a first operation pulley 550a. The first bevel gear 551a connected to the first operation pulley 550a and the first bevel gear 551b connected to the second operation pulley 550b are configured to be respectively attached to the second operation pulley 550b and wound up. It may be configured to mesh with the driven bevel gear 540 as described above. Even in this case, the opening operation can be performed only by pulling the operation grip 508 downward, and the closing operation can be configured by the biasing force of the torsion coil spring 516, and the operability can be further improved by the gear mechanism. Can.

  In the shielding device of each embodiment, the operation in one direction of the shielding material (the operation from the fully closed state to the fully open state) is completed within the range where the operation grips 40 and 508 do not contact the floor surface. Is preferred. For example, as shown in FIG. 35 as a representative of the first embodiment, the height from the floor of the operation grip 40 in the fully closed state is 1200 to 1300 mm, and the height from the floor of the operation grip 40 in the fully open state The height can be configured to be about 100 mm. Further, the gear mechanism for reducing the pulling operation force can be applied to the first embodiment or the second embodiment, and in this case, it is possible to use one of the shielding members in a range where the operation grip 40 is not in contact with the floor surface. There is more freedom in the design with respect to the extent to which motion in the direction is complete.

  As mentioned above, according to the shielding apparatus of each embodiment, while closing shielding materials, such as a curtain material, automatically, while making the energizing force to the direction which resisted the power for making the said automatic closure unnecessary, the said shielding is unnecessary. The material can be held open or halfway.

  Moreover, according to the shielding device of each embodiment, only the operation code 42, 509 capable of moving the closed loop in the opening direction is exposed from the operation unit 6 or the second unit 503 as means for moving the leading runner 4, 504 in the opening direction. Since the operator is configured to hang down, the operator can not easily get lost in the operation, and the user-friendly configuration with improved operability can be obtained.

  And also in each example of any embodiment, it can constitute so that a stopper (code stopper 70, clutch mechanism 521) may control based on the amount of movement as explained in a 3rd embodiment.

  Although the present invention has been described above by taking the example of the specific embodiment, the present invention is not limited to the example of the above embodiment, and various modifications can be made without departing from the technical concept thereof. For example, although the accordion curtain 1 was made into 1st Embodiment and 2nd Embodiment as a representative example using a wrinkle, and the curtain rail 500 was demonstrated as 3rd Embodiment and 4th embodiment as a representative example which does not use a wrinkle, The configuration according to the present invention can be applied to a shielding device in which the driving of the shielding material is smoothed by the cord of (1). Moreover, although the specific example was demonstrated regarding the traction cord 51 which performs length adjustment at the time of construction, it is possible to facilitate tension installation, for example by providing a tension member (tension spring) in the one part.

  Further, the shielding device according to the present invention can be summarized as follows.

  First, the shielding device according to the first aspect of the present invention supports the leading runner 4,504 so as to be movable along the hanger rails 2,501, and the shielding material (curtain material 65,507 is provided on the lower surface side of the hanger rails 2,501. And the opening and closing of the shielding member is made possible by the movement of the leading runner 4,504.

  In the shielding device according to the first aspect, a transmission (that is, a pulling cord 51, an endless belt 514, or any other cord, belt, or string such as a chain or the like) that moves in the opening / closing direction in conjunction with the leading runner 4,504. Means for urging the leading runner 4,504 directly or indirectly in the closing direction (coil spring 64, torsion coil spring 511, or a structure that biases the runner supporting the heel and receives biasing force from the runner , And other stoppers for generating biasing force), and further, stoppers (cord stopper 70, clutch mechanism 521, or other members having similar functions) for restricting or allowing movement of the transmission.

  Then, in the shielding device according to the first aspect, the transmission body directly or indirectly constitutes a closed loop related to the opening operation, and the stopper moves the transmission body in the opening direction based on the movement state of the closed loop. Is detected directly or indirectly, and after the movement of the transmission body in the opening direction, the movement of the transmission body in the closing direction is directly or indirectly made when the biasing means changes the movement in the closing direction. And a state in which movement in the closing direction is permitted (drive or release state) is selectively controlled. Here, as an example of the said transmission which constitutes a closed loop about opening operation directly, it becomes like the first and second embodiments mentioned above, and an example of the transmission which constitutes a closed loop indirectly about opening operation. As in the third and fourth embodiments described above. The drive tension (endless belt 514) can be applied to the transmission body (endless belt 514) by the first pulley 512 via the operation cord 509, for example, as power (tension) to be moved in the opening direction indirectly with respect to the closed loop. . As a result, the shielding material can be closed automatically, and the shielding material can be held in the open state or in the middle while eliminating the need for biasing force in the direction against the power for automatically closing the shielding material. The operability is improved.

  And in the shielding device of the first aspect, the stopper restrains when it is detected that it is less than the displacement minimum movement amount R from the state (lock state) which restricts the movement of the transmission body in the closing direction. Returning to the state, when it is detected that the displacement minimum movement amount R or more, it is preferable to be configured to be in a state (drive or release state) to allow movement in the closing direction. Thereby, in the shielding apparatus of the said 1st aspect, the operativity of a stopper is improved and stabilization regarding operation is attained.

  Further, in the shielding device according to the first aspect, the stopper restrains when it is detected that it is less than the displacement minimum movement amount R from the state (lock state) in which the movement of the transmission body in the closing direction is restrained. Returning to the state, if it is detected that the displacement minimum movement amount R or more and the elongation movement amount S is less, the movement in the closing direction is permitted (drive or release state), and the movement amount is S or more It is preferable to configure so as to be in a state of restraint when detecting. Thereby, in the shielding apparatus of the said 1st aspect, the operativity of a stopper is improved and stabilization regarding operation is attained.

  Further, in the shielding device according to the first aspect, the stopper is less than the second displacement minimum movement amount T (<R) from a state (a driving or releasing state) which allows the movement of the transmission body in the closing direction. When it detects a certain thing, it returns to the permitted state, and when it detects that it is more than the second displacement minimum movement amount T and is more than S, it restricts the movement in the closing direction (locked state) It is preferable to configure it so that Thereby, in the shielding apparatus of the said 1st aspect, the operativity of a stopper is improved and stabilization regarding operation is attained.

  Further, in the shielding device according to the first aspect, it is preferable that the operation cords 42 and 509 connected to the closed loop be provided so that the pulling force of the operation cord is the power to move the closed loop in the opening direction. It is. This further improves the operability.

Further, in the shielding device according to the first aspect, the leading runners 4,504 support the heel (the moving rod 7 in the above example), and the external force in the opening direction directly applied to the heel is in the opening direction relative to the closed loop Preferably, the stopper is configured to detect the movement of the transmission body in the opening direction directly or indirectly based on the movement state of the closed loop by the power. As a result, the operability is further improved, and the stopper reliably performs the clutch operation.

  Further, in the shielding device of the first aspect, the stopper is preferably configured to directly restrain or allow the movement of the transmission body in the closing direction. As a result, direct operation is also included, and operability is improved.

  Further, in the shielding device according to the first aspect, the stopper is engaged with the transmission body (the operation code 509 in the above example) and rotates relative to the rotating body (the first pulley 512 in the above example). It is preferable to be configured to restrain or allow the rotation of the transmission in the closing direction. As a result, the above-described effects can be exhibited even in specific applications, and operability can be improved.

Further, in the shielding device according to the first aspect, the closed loop is closer to the first diverting means (the pulley 52 and the pulley units 11 and 12 in the above example) disposed on the base end side of the shielding member than the leading runner. The transmission body is stretched between the second deflection means (the operation pulley 43 in the above example) disposed on the front end side, and one end of the transmission body is attached to the weir (the movement rod 7 in the above example) It is preferred that the connection is made and the other end is connected to the leading runner supporting the heel (in the above example, the mobile wedge 7) to form a closed loop indirectly. As a result, the above-described effects can be exhibited even in specific applications, and operability can be improved.

  Further, in the shielding device according to the first aspect, the first turning means includes a first turning portion (the pulley 52 in the above example) disposed at one end of the hanger rail, and a fixing portion below the first turning portion. And a second diverting portion (in the above example, the pulley units 11 and 12) disposed on the fixed rod 8 (in the above example), the second diverting means is disposed on the other end of the hanger rail It is preferable to be configured to include a third turning portion (the operation pulley 43 in the above-mentioned example). As a result, the above-described effects can be exhibited even in specific applications, and operability can be improved.

Further, in the shielding device of the first embodiment, the heat transfer dynamic body, pulling the second portion (the aforementioned example (in the above example cord 26 for closed loop) the first portion consists of a plurality of lines and be composed of one The cords 51a and 51b are connected to each other, and the second diverting portions are provided in the same number as the number of the second portions, and the respective end portions of the first and second portions are fixed to the crucible at a plurality of locations. It is preferred to be configured. As a result, the above-described effects can be exhibited even in specific applications, and operability can be improved.

Further, the in-shielding device of the first embodiment, the heat transfer dynamic body in a pair of deflection means (the above example provided at both ends of the hanger rail 501 (endless belt 514 in the above example) the first unit 502, It is preferable that the second unit 503) be constructed so as to be a closed loop. As a result, the above-described effects can be exhibited even in specific applications, and operability can be improved.

  Further, in the shielding device of the first aspect, the movement of the transmission body in the opening direction is preferably configured to function by a pulling operation by the operation cord. As a result, the above-described effects can be exhibited even in specific applications, and operability can be improved.

  On the other hand, the shielding device according to the second aspect of the present invention supports the leading runner 4,504 so as to be movable along the hanger rails 2,501, and the shielding member on the underside of the hanger rails 2,501 (curtain in the above example) Material, and enables the opening and closing of the shielding material by the movement of the leading runner 4, 504, and the operation cord (the above example) suspended from the operation unit (the operation unit 6 and the second unit 503 in the above example) Is configured as an apparatus operable by the operation code 42, 509). In the shielding device of the second aspect according to the present invention, regardless of the closed loop described above, the case of an open loop is also included.

  In the shielding device according to the second aspect of the present invention, a transmission (that is, a traction cord 51, an operation cord 42, 509, an endless belt 514, or other cords, belts, etc.) that moves in the opening and closing direction in conjunction with the leading runner Biasing means (a coil spring 64, a torsion coil spring 511, or a runner supporting a hook or the like) which is provided with a string or a narrow body such as a chain and which biases the leading runner 4504 directly or indirectly in a first direction (To generate other biasing forces including a structure that receives biasing force from the runner), and the operation code only to move the leading runner 4,504 in the direction opposite to the first direction. And the operation code (in the above example, the operation unit 6, the second unit 503) so that the transmission can be moved in the reverse direction. Configured to droop from. As a result, even in the case of the open loop, operability is improved while automatically closing the shielding member and eliminating the need for biasing force in the direction against the power for automatically closing the shielding member.

  Further, in the shielding apparatus according to the second aspect of the present invention, a selectable stopper (cord stopper 70, clutch mechanism 521, or other similar function) capable of preventing or allowing movement in one direction is provided. Is preferred. As a result, the shielding material can be held in the open state or in the middle, and the operability is improved.

  Further, in the shielding device of the second aspect according to the present invention, the opening and closing operation of the shielding material (the curtain members 65 and 507 in the above-mentioned example) is enabled within the range where the operation grips 40 and 509 do not contact the floor. Is preferred. This further improves the operability.

  Further, in the shielding device of the second aspect according to the present invention, it is preferable that the operation codes 42 and 509 are configured to be suspended from the front and rear of the operation unit (the operation unit 6 and the second unit 503 in the above example). is there. This further improves the operability.

  Further, in the shielding apparatus according to the second aspect of the present invention, it is preferable that the one direction is a closing direction and the opposite direction is an opening direction. As a result, the balance between the biasing force of the biasing means and the stopping force of the clutch operation can be made uniform, and the power balance useful for improving the operability can be set at a high level.

  Further, in the shielding device according to the second aspect of the present invention, the transmission body (traction cord 51, operation cord 42, 509, endless belt 514, or other cord, belt, string or narrow body such as a chain) is directly or It is preferable to configure the closed loop indirectly so that the operating cords 42 and 509 transmit the pulling force in the closed direction to the closed loop. As a result, the tension source can be made uniform, and the power balance that helps improve the operability can be set to a high level.

  Further, in the shielding device according to the second aspect of the present invention, one end of the operation cord 42, 509 is suspended from the operation unit (the operation unit 40 and the second unit 503 in the above example) and the other end is the hanger rail 2 or It is preferable to be configured to be accommodated in the operation unit (the second unit 503 in the above-mentioned example). This makes it possible to avoid an increase in size that would impair aesthetics.

  Further, in the accorden curtain 1 illustrated as the shielding device of the first and second embodiments described above, the convolution dimension Wc in the fully open state depends on the framework and the curtain material 65. Moreover, in the curtain rail 500 illustrated as a shielding apparatus of 3rd and 4th embodiment, convolution dimension Wc is dependent on the number of runners to be used.

  At this time, although the Accorden curtain 1 will be described representatively, as shown in FIG. 36 (a), when the Accorden curtain 1 is configured using the mounting frame 5, the opening width Wo1 is a curtain material The distance from the position where 65 is folded to the mounting frame 5 is obtained. With this aperture width, a wider aperture width is often desired in the fully open state.

  Therefore, as shown in the conceptual view shown in FIG. 36 (b), the mounting frame 5 can be eliminated. In this case, the opening width Wo2 is wider than the opening width Wo1. In addition, it is preferable because there is no concern that the operating grip 40 may abut on the mounting frame 5 and be damaged even if it shakes. For example, in the Accorden curtain 1 illustrated as the shielding device of the first and second embodiments, an operation of supporting the operation grip 40 by using only the coil spring 64 without using the weight member 30 as an urging force in the closing direction. The unit 6 can be stabilized by being attached to the hanger rail 2, so that the mounting frame 5 can be eliminated. Therefore, in the fully closed state, the shielding material (curtain material 65) is present at a position sandwiched by the front and rear operation cords 42 in the width direction of the surface shielded by the shielding device. At this time, it is preferable that the shielding member (the curtain member 65) is moved in the opening direction in the positional relationship between the front and rear operation cords 42. Moreover, in the form which does not have the gear mechanism mentioned above in operation unit 6 or the 2nd unit 503 as a shielding device of each embodiment, although stroke Hs and opening width Wo2 of operation grips 40 and 508 become almost the same, As a modification of the shielding device of the embodiment, Hs <Wo2 can be obtained by increasing the speed of the gear mechanism in a multistage configuration.

  Moreover, as a modification of the shielding apparatus of 4th Embodiment mentioned above, it can be set as a form as shown in FIG. FIG. 37 is an explanatory view of a modification relating to the shielding device of the fourth embodiment according to the present invention, and FIG. 37 (a) is a front conceptual view partially enlarging the second unit 503; ) Is a side view of the second unit 503 partially enlarged. Similar components are given the same reference numerals. In the modification of the shielding device of the fourth embodiment, in place of the first operation pulley 550a and the second operation pulley 550b of the fourth embodiment, the first operation pulley 555a and the second operation pulley 555b of the winding type are respectively provided. It is provided.

  Then, one end of each of the first and second operation codes 509a and 509b is attached to each operation grip 508a and 508b, and the other end of each of the first and second operation codes 509a and 509b is a first operation pulley 555a. The first bevel gear 551a connected to the first operation pulley 555a and the first bevel gear 551b connected to the second operation pulley 555b are configured to be respectively attached to the second operation pulley 555b and wound up. It is configured to mesh with the driven bevel gear 540 as described above. In addition, the first operation pulley 555a and the second operation pulley 555b are configured to be accommodated in the second operation unit 503. Even in this case, the opening operation can be performed only by pulling the operation grip 508 downward, and the closing operation can be configured by the biasing force of the torsion coil spring 516, and the operability can be further improved by the gear mechanism. Can.

  Further, as shown in FIG. 37 (b), a clutch mechanism 512a for indirectly causing the clutch operation to function is provided in either one or both of the first operation pulley 555a and the second operation pulley 555b. can do. In such a clutch mechanism 512a, for example, applying the technique of the fourth embodiment described above, a fixed shaft is provided on the outer frame of the operation unit 503, and a guide groove 521 is provided on the fixed shaft. This can be realized by providing a slide groove 522 and providing a clutch ball 524 between the guide groove 521 of the fixed shaft and the slide groove 522 on the operation pulley side.

  As a modification of the first and second embodiments, in order to automatically operate in the opening direction, the coil spring 64 between the hinges is changed to a compression spring and the weight code 29 is attached to the hanger rail 2 from the mounting frame 5 side. It can be urged in the opening direction by being configured to turn along the side of the non-operating part of the hanger rail 2 and to be connected to the moving rod 7. In addition, the operation cord 42 is directly connected to the moving rod 7 so as to be movable in the closing direction, and configured to reverse the movement direction of the cord stopper 70 in the left-right direction and block or allow the movement of the pulling cord 51 in the opening direction. It can be realized by

  Further, as a modification of the third and fourth embodiments, in order to automatically operate in the opening direction, the twisting direction of the torsion coil spring 516 is reversed and the connection position of the operation cord 509 to the endless belt 514 is reversed in the back and forth direction. This can be realized by reversing the direction of the stopper (clutch mechanism 521).

  Further, as a modification of the third and fourth embodiments, two front runners 504 are provided and attached to the front and back sides of the endless belt 514, respectively, and configured to be movable from the left and right ends to the center. It is also possible to adopt a double-open type in which the shielding member 507 is closed from the both sides toward the center.

  According to the present invention, the shielding material is automatically closed and the shielding material is held in the open state or in the middle while eliminating the need for an urging force in a direction against the power for automatically closing the shielding material. This is useful for the application of the shielding device in which the driving of the shielding material is smoothed by the predetermined cord, since the operability can be improved and the configuration can be realized with ease of use.

DESCRIPTION OF SYMBOLS 1 Accordion curtain 2 Hanger rail 4 Head runner 6 Operation unit 26 Code for closed loop 40 Operation grip 42 Operation code 51, 51a, 51b Tow code 64 Coil spring 65 Shielding material (curtain material)
70 cord stopper 500 curtain rail 501 hanger rail 504 top runner 507 shielding material (curtain material)
508 operation grip 508a first operation grip 508b second operation grip 509 operation code 509a first operation code 509b second operation code 514 endless belt 516 torsion coil spring 521 clutch mechanism

Claims (23)

A shielding device for movably supporting a leading runner along a hanger rail, comprising a shielding material on the lower surface side of the hanger rail, and allowing the shielding member to be opened and closed by movement of the leading runner,
A transmission that moves in the opening and closing direction in conjunction with the leading runner;
Biasing means for biasing the leading runner in the closing direction;
A stopper for restraining or allowing movement of the transmission body,
The transmission body constitutes a closed loop related to the opening operation, and the stopper includes an operation including an opening and closing operation directly on the shielding material and an opening and closing operation by an operation cord connected to the closed loop based on the movement state of the closed loop. When the movement of the transmission in the opening direction is detected based on the movement of the transmission in the opening direction, the movement of the transmission in the closing direction is detected by the biasing unit. A shielding device characterized in that it is configured to selectively control a state of restraining movement of and a state of permitting movement in a closing direction.   The stopper is configured to restrain movement in the closing direction when it is detected that the movement is less than a predetermined minimum movement amount from the state in which movement of the transmission body in the closing direction is restricted, the predetermined displacement minimum The shielding device according to claim 1, wherein the shielding device is operated to allow movement in the closing direction when it is detected that the movement amount is equal to or more than the movement amount.   The stopper is configured to restrain movement in the closing direction when detecting that the amount is less than the predetermined displacement minimum moving amount from the state in which movement of the transmission body in the closing direction is restrained, and the stopper is configured to restrict the predetermined displacement. When it is detected that the movement amount is equal to or more than the minimum movement amount and less than the predetermined long movement amount, movement in the closing direction is allowed, and when it is detected that the predetermined long movement amount is above 3. A shielding device according to claim 2, characterized in that it operates to constrain movement of the device.   The stopper is configured to allow movement in the closing direction when detecting that the amount is less than the second displacement minimum movement amount from a state in which movement of the transmission body in the closing direction is permitted. 4. The apparatus according to claim 3, wherein the movement in the closing direction is restricted in a case where it is detected that the displacement amount is equal to or more than the displacement minimum displacement amount and the predetermined extension amount. Shielding device. The shielding device according to any one of claims 1 to 4, wherein the pulling force of the operation cord is configured to be a power for moving the closed loop in an opening direction.   The external force in the opening direction which supports the heel from the leading runner and is directly applied to the heel becomes the power in the opening direction for the closed loop, and the stopper performs the transmission based on the movement of the closed loop by the power. A shielding device according to any of the preceding claims, characterized in that it is arranged to detect the movement of the in the direction of opening.   The shielding device according to any one of claims 1 to 6, wherein the stopper is configured to directly restrain or allow the movement of the transmission body in the closing direction.   The stopper is configured to restrict or permit rotation of the transmission body in the closing direction with respect to a rotating body engaged with the transmission body and rotating in conjunction with the transmission body. Shielding device according to any one of the preceding claims.   The transmission is stretched between a first turning means disposed on the proximal side of the shielding member and a second turning means disposed on the distal side of the leading runner, and the second turning means. The closed loop is indirectly formed by connecting one end of a transmission to a weir and the other end of the transmission connected to the leading runner supporting the weir. A shielding device according to any one of the preceding claims. The first turning means includes a first turning portion disposed at one end of the hanger rail, and a second turning portion disposed at a fixed portion below the first turning portion.
10. The shielding device according to claim 9, wherein the second turning means is configured to include a third turning portion disposed at the other end of the hanger rail.   The transmission body is configured by connecting a first portion formed by one and a second portion formed by a plurality of pieces, and the second turning portion is provided in the same number as the number of the second portions, the first portion 11. A shielding device according to claim 10, characterized in that each end of the second part is fixed to the weir at multiple points.   The said transmission body is stretched so that it may become a closed loop between a pair of turning means provided in the both ends of the said hanger rail, It is characterized by the above-mentioned. Shielding device.   The shielding device according to any one of claims 1 to 12, wherein the movement of the transmission body in the opening direction is configured to function by a pulling operation by an operation cord. The leading runner is movably supported along the hanger rail, and a shielding member is provided on the lower surface side of the hanger rail, and the shielding member can be opened and closed by the movement of the leading runner, and operated by the operation cord suspended from the operation unit Possible shielding devices,
A transmission that moves in the opening and closing direction in conjunction with the leading runner;
Biasing means for biasing the leading runner in a first direction;
It is possible to detect movement of the transmission body in the first direction based on the operation including the opening and closing operation directly on the shielding material and the opening and closing operation by the operation cord connected to the closed loop, and to select the blocking or allowance Equipped with a stopper,
The operation code is provided only for moving the leading runner in the direction opposite to the first direction, and the operation code is suspended from the operation unit so as to allow the transmission body to move in the opposite direction. A shielding device characterized in that it is configured.   The shielding device according to claim 14, characterized in that opening and closing operation of the shielding member is enabled within a range in which the operation grip for operating the movement of the operation cord does not contact the floor.   The shielding device according to claim 14, wherein the operation code is configured to be suspended from the front and back of the operation unit.   The shielding device according to any one of claims 14 to 16, wherein the first direction is a closing direction, and the reverse direction is an opening direction.   18. The transmission according to any one of claims 14 to 17, characterized in that the transmission constitutes a closed loop with respect to the opening operation, and the operating cord is connected to transmit a pulling force in an open direction to the closed loop. Shielding device.   One end side of the operation cord is suspended from the operation unit, and the other end side of the operation cord is configured to be accommodated in either the hanger rail or the operation unit. 19. A shielding device according to any one of the claims 14-18.   20. An operating unit for supporting an operating grip for operating the movement of the operating cord is configured to be attached to the hanger rail and stabilized. Shielding device according to one of the claims.   In the fully closed state, the shielding member is present at a position between the front and rear operation cords in the width direction of the surface to be shielded by the shielding device, and the front and back operation cords are shifted to open operation from the fully closed state. 21. The shielding device according to claim 20, wherein the shielding member is configured to move in the opening direction in a positional relationship in which it is sandwiched.   15. The apparatus according to claim 14, wherein the stopper is positioned on a fixed object in a circumferential path of the transmission, and is configured to directly clamp the transmission to prevent movement. 20. A shielding device according to any one of 20 to 20.   23. The method according to claim 18, wherein the stop is configured to stop or allow rotation of a pulley tensioning the closed loop. Shielding device according to.