JP2019132076A - Horizontal blind - Google Patents

Abstract

To provide a horizontal blind allowing a maximum inclination of slats to be changed easier than before.SOLUTION: A horizontal blind is provided with: a head box 10 defining a receiving space having an upward opening direction; a drum device 15 having a rotation axis 151 rotatably supported in the receiving space and integrally rotating with the rotation axis 151; a ladder clutch 16 coupled to the drum device 15 by being winded around a circumference of the drum device 15 and having parts 161a, 161b to be regulated at both of its ends, projecting in an outer radial direction of the drum device 15; a ladder code 13 drooped from the head box 10, capable of tilting in accordance with rotation of the ladder clutch 16; slats 11 supported in an aligned state by the ladder code 13; a body part 20 mountably arranged on an upper side of the head box 10; and a regulating member 2 having a first projected part 22 of which a regulating part 222 is formed to allow the rotation of the ladder clutch 16 to be regulated through projecting downward from the body part 20 and abutting the parts 161a, 161b to be regulated.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a horizontal blind.

  In a conventional horizontal blind, a slat is tilted by raising and lowering a ladder cord arranged before and after the slat, and the slat is tilted by a rotating drum. Also known is a blind that controls the inclination of the slats by rotating the rotary drum that relatively raises and lowers the front and rear ladder cords by the clutch, and restricts the maximum inclination angle of the slats by cutting off the rotational force of the rotary drum. Yes.

  Further, as such a clutch, there is a clutch spring wound so as to tighten the outer periphery of the rotary drum, and when the tightening of the clutch spring is relaxed by the regulating member that contacts the end of the clutch spring, The inclination angle is regulated.

  In addition, as a technique for regulating the tilt angle of such a slat, the tilt spring includes a tilt spring fastened to the outer peripheral surface of the tilt drum and a support member that rotatably supports the tilt drum. The tilt spring is attached to the tilt drum. A slat drive device is known in which a diameter is increased when a predetermined rotation angle is rotated in conjunction with each other, and a contact member is separately attached to a support member (see Patent Document 1). ).

  According to this slat drive device, since the contact member is separate from the support member, the maximum inclination angle of the slat is changed by attaching the contact member to the support member according to the maximum inclination angle of the desired slat. It becomes possible.

JP 2016-37829 A

  However, in the above-described slat drive device, since the contact member is attached below the tilt drum, the contact member is attached to and detached from the support member in a state where the slat drive device is housed in the blind headbox. Can not do. Therefore, the above-described slat drive device has a problem that the work for changing the maximum inclination angle of the slat becomes complicated.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a horizontal blind that can change the maximum inclination angle of a slat more easily than in the past.

  In order to solve the above-described problems, the horizontal blind according to the present embodiment has a head box that defines an accommodation space that opens upward, and a rotary shaft that is rotatably supported in the accommodation space. A drum device that rotates integrally with a shaft; a ladder clutch that is wound around the outer periphery of the drum device and fastened to the drum device; A ladder cord that is suspended from the ladder clutch and can be tilted in accordance with the rotation of the ladder clutch, a slat that is supported in an aligned state by the ladder cord, a main body portion that can be placed above the head box, and And a regulating member having a first projecting portion formed with a regulating portion that protrudes downward from the main body and abuts against the regulated portion to regulate the rotation of the ladder clutch.

  According to the present invention, the maximum inclination angle of a slat can be changed more easily than in the past.

It is a sectional side view which shows the structure of the blind which concerns on 1st Embodiment. It is a longitudinal section showing the composition of the blind concerning a 1st embodiment. It is the perspective view which looked at the control member concerning a 1st embodiment from the slanting upper part. It is the perspective view which looked at the control member concerning a 1st embodiment from the slanting bottom. It is a front view which shows the structure of the control member which concerns on 1st Embodiment. It is a side view which shows the structure of the control member which concerns on 1st Embodiment. It is a sectional side view which shows the state by which only the non-regulation protrusion part was latched. It is a sectional side view which shows the state which a to-be-latched part presses an upper end of a head box. It is a sectional side view which shows the state in which the control member was attached to the head box. It is a sectional side view which shows the structure of the blind with a slat in a horizontal state. It is side sectional drawing which shows the structure of the blind in which the slat was inclined. It is a sectional side view which shows the structure of the blind in which a slat is in a fully closed state. It is a sectional side view which shows the structure of the blind which attached the regulating member to the front-back reverse. It is a sectional side view which shows the structure of the blind which concerns on 2nd Embodiment. It is a sectional side view which shows the structure of the blind in which the slat was inclined to the maximum inclination angle.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

<First Embodiment>
(Whole structure of the blind)
The overall configuration of the blind according to the first embodiment will be described. FIG. 1 is a side sectional view showing a configuration of a blind according to the present embodiment. FIG. 2 is a longitudinal sectional view showing the configuration of the blind. In the following description, when the longitudinal direction of the blind is the left-right direction and the installed blind is viewed from the side (one in the left-right direction), the installation surface side (for example, the window side) is the rear side, and vice versa (for example, the room) 1 is a front side, the right side in the figure is the rear, the left side in the figure is the front, and in the following description, the side sectional view is a plane parallel to the front-rear direction and the up-down direction. The cut blind is viewed from the side. Further, FIG. 2 shows a state in which a blind cut by a plane parallel to the vertical direction and the horizontal direction is viewed from the rear, and as a rotating drum and a ladder clutch as a drum device above the rotational axis A of the rotating shaft. The clutch spring is illustrated by a dotted line.

  As shown in FIGS. 1 and 2, the blind 1 is a horizontal blind, and includes a head box 10, a plurality of slats 11, a lifting / lowering cord 12, a ladder cord 13 (13 a and 13 b), a drum base 14, a rotating drum 15, and a clutch. A spring 16 and a regulating member 2 are provided. Further, the blind 1 includes a bottom rail (not shown).

  The head box 10 is a flexible member having a substantially rectangular parallelepiped shape in which a housing space is defined and at least a part of the head box 10 is open. The head box 10 is fixed to a window frame or the like. 14, a rotating drum 15 and a clutch spring 16, and a plurality of slat rotating devices arranged in the left-right direction, and lifting and unwinding the lifting cord 12 by the lifting drum to raise and lower the bottom rail, A plurality of slat lifting devices (not shown) arranged in a plurality are accommodated. The plurality of slat rotating devices and the plurality of slat lifting devices are configured such that electric and manual rotational forces are transmitted to rotate the rotating drum 15 and the lifting drum (not shown). The slat lifting device may be a slat lifting and rotating device arranged in a state of being connected to each other. Further, in the head box 10, the upper end of the front plate portion 100a that shields the storage space and the outside thereof at the front and the upper end of the rear plate portion 100b that shields the storage space and the outside thereof at the rear are bent inward. The front locking part 101a and the rear locking part 101b thus formed are formed. The front locking part 101a and the rear locking part 101b are provided opposite to each other in the front-rear direction at the upper end of the head box 10, and project inward in the front-rear direction.

  A plurality of slats 11 are arranged as shielding materials below the head box 10, more specifically, between the head box 10 and the bottom rail. The lifting cord 12 has an upper end fixed to the lifting drum in each of the plurality of slat lifting devices, and a lower end that is suspended from the head box 10 and inserted through a hole provided in each slat 11 is fixed to the bottom rail. . When the elevating cord 12 is wound around the elevating drum, the bottom rail and the plurality of slats 11 are raised, and when the elevating cord 12 is unwound from the elevating drum, the bottom rail and the plurality of slats 11 are lowered.

  The ladder cord 13 includes a plurality of vertical cords 13 a and 13 b that are arranged in the left-right direction corresponding to the plurality of slat rotating devices, and are arranged so as to sandwich the slat 11 from the front and rear. Each of the vertical cords 13a and 13b has an upper end fixed to a slat rotation device, specifically, a clutch spring 16, and a lower end fixed to the bottom rail. The ladder cord 13 further includes a plurality of middle cords 130 corresponding to the number of slats 11, and each middle cord 130 is provided to connect the vertical cords 13a and 13b in the front-rear direction. Each slat 11 is supported on the ladder cord 13 in an aligned state by being placed on the corresponding middle cord 130.

  A slat clip 110 as a slat fixing member is attached to the uppermost slat 11. The slat clip 110 is attached to the slat 11 from below so that the middle cord 130 on which the slat 11 to be attached is placed is sandwiched between the slat 11, thereby reliably rotating the ladder cord 13. Can be communicated to.

  The drum base 14 is disposed in the accommodating space of the head box 10 and has two walls 140a, 140b, two which support the rotary drum 15 so as to be opposed to each other in the left-right direction so as to sandwich the rotary drum 15. The ladder code insertion holes 141a and 141b have two restricting portions 142a and 142b. The ladder code insertion holes 141a and 141b are holes formed so that the vertical cords 13a and 13b can be suspended from the head box 10, respectively. The two restricting portions 142a and 142b are members that are disposed in front of and behind the rotating drum 15 and project upward from the bottom of the drum base 14, respectively, and one of the clutch springs 16 (counterclockwise in FIG. 1). Alternatively, the maximum rotation angle in the opposite direction (clockwise in FIG. 1) is regulated.

  The rotating drum 15 is formed in a substantially cylindrical shape and has a rotating shaft 151. The rotating shaft 151 is supported by the two wall portions 140a and 140b of the drum base 14 so that the rotating drum 15 rotates around the rotation axis A. It is possible. The clutch spring 16 is a linear member wound around the outer periphery of the rotating drum 15 so as to fasten the rotating drum 15 with such a strength that it rotates integrally with the rotating drum 15, and is an elastic member having an excellent restoring force. is there. At both ends of the clutch spring 16, there are regulated portions 161 a and 161 b formed by being bent in opposite circumferential directions. Here, the regulated portion 161 a is positioned forward with respect to the regulated portion 161 b, The regulation part 161b shall be located behind the regulated part 161a. The clutch spring 16 is formed such that both ends thereof overlap each other by a predetermined distance in the circumferential direction. The clutch spring 16 may be a resin molded product having a predetermined width in the axial direction of the rotary drum 15 instead of a linear member.

  The upper end of the vertical cord 13a is fixed to the restricted portion 161a of the clutch spring 16, and the upper end of the vertical cord 13b is fixed to the restricted portion 161b. The slat 11 is tilted. Further, when the clutch spring 16 is rotated to the one side by a predetermined rotation angle, the restricted portion 161a comes into contact with the restricting portion 142a formed on the drum base 14, whereby the winding of the clutch spring 16 around the rotating drum 15 is relaxed. Thus, the clutch spring 16 rotates relative to the rotary drum 15, thereby restricting the tilting of the slat 11 that moves downward on the front side. In the present embodiment, it is assumed that the restricting portion 142a is formed so that the clutch spring 16 relatively rotates when the slat 11 is tilted until it is in the anti-fully closed state. Similarly, when the regulated portion 161b abuts on the regulating portion 142b, the winding of the clutch spring 16 around the rotating drum 15 is relaxed so that the clutch spring 16 rotates relative to the rear side. Tilt of the descending slat 11 is restricted. In the present embodiment, it is assumed that the restricting portion 142b is formed so that the clutch spring 16 rotates relatively when the slat 11 is tilted until it is fully closed.

  The regulated portions 161a and 161b may be formed so as to protrude outward in the radial direction of the rotary drum 15 with respect to the portion of the clutch spring 16 that is wound around the rotary drum 15, for example, the clutch spring The regulated portions 161a and 161b may be formed by bending both ends of 16 in the radially outward direction. Further, the vertical cords 13a and 13b may be fixed at arbitrary positions so as to tilt the slat 11 according to the integral rotation of the clutch spring 16 with the rotary drum 15.

(Configuration of restriction member)
The configuration of the restricting member will be described. FIG. 3 is a perspective view of the regulating member as viewed obliquely from above. FIG. 4 is a perspective view of the restricting member as viewed obliquely from below. FIG. 5 is a rear view showing the configuration of the regulating member. FIG. 6 is a side view showing the configuration of the regulating member.

  As shown in FIGS. 3 to 6, the restricting member 2 includes a main body 20, a non-regulating protrusion 21, and a restricting protrusion 22. The main body 20 is a member that is formed in a substantially plate shape that extends in the front-rear direction as a whole. On the bottom surface of the main body 20, a non-restricting protrusion 21 is formed on one side in the front-rear direction, and the restricting protrusion is reversed. Part 22 is formed. Here, the shape of the main body 20 need not be substantially plate-shaped, and may be any shape that has at least a bottom surface that can be placed on the head box 10 and extends in the front-rear direction. The main body 20 has a length in the front-rear direction that is substantially the same as the size in the front-rear direction of the head box 10, and the non-regulating protrusion 21 is provided on the other end side from one end of the main body 20. The protruding portion 22 is provided on one end side from the other end of the main body portion 20. That is, the regulated projection 21 and the regulation projection 22 are provided so as to be located inward from the front-rear direction end of the main body 20.

  The non-regulating protrusion 21 protrudes downward by a predetermined distance from the bottom surface of the main body 20, and a part of the lower end side thereof is positioned outward in the front-rear direction, that is, opposite to the restricting protrusion 22. Accordingly, the non-regulating protrusion 21 functions as a locked portion that is locked to the front locking portion 101a or the rear locking portion 101b formed in the head box 10 as a whole. It has become.

  The restricting protruding portion 22 protrudes downward from the bottom surface of the main body portion 20 by a predetermined distance, and includes a locked portion 221, a restricting portion 222, and a rounded portion 223. The locked portion 221 is formed so as to protrude outward in the front-rear direction, that is, opposite to the non-restricting protruding portion 21, and thereby, the rear locking portion 101 b formed in the head box 10 or the front engagement portion. It is adapted to be locked to the stop portion 101a. When the restricting member 2 is attached to the head box 10 at the lower end portion of the restricting protruding portion 22, the restricting portion 222 can come into contact with the restricted portion 161a or 161b, in other words, when the clutch spring 16 is rotated. It is formed so that at least a part is located on the movement path of the regulated portion 161a or 161b. In the present embodiment, the restricting portion 222 is formed to restrict the rotation of the clutch spring 16 to one side (counterclockwise in FIG. 1). Below the locked portion 221 is formed a rounded portion 223 that is a curved surface that gradually inclines rearward from below to above.

  As shown in FIG. 5, the non-regulating protruding portion 21 and the locked portion 221 are formed to have a width W1 that is equal to or slightly smaller than the distance between the two wall portions 140a and 140b of the drum base 14. In the state attached to the box 10, the restricting member 2 is prevented from shifting in the left-right direction. The restricting portion 222 is formed to have a width W2 that is smaller than the axial length of the rotary drum 15 supported by being sandwiched between the two wall portions 140a and 140b.

(How to attach the restriction member)
A method for attaching the regulating member to the head box will be described. FIG. 7 is a side sectional view showing a state in which only the non-regulating protrusion is locked. FIG. 8 is a side sectional view showing a state in which the locked portion presses the upper end of the head box. FIG. 9 is a side sectional view showing a state in which the regulating member is attached to the head box.

  When the regulating member 2 is attached to the head box 10, first, as shown in FIG. 7, the regulating member 2 is tilted so that only the non-regulating protrusion 21 is locked to the rear locking portion 101b. Is positioned below the rear locking portion 101b. At this time, the lower end of the restricting protruding portion 22 comes into contact with the front locking portion 101a. When a downward force is applied to the restricting member 2 in this state, as shown in FIG. 8, the front locking portion 101 a is bent over the rounded portion 223 by the front plate portion 100 a being bent forward, and then the locked portion 221. It will be in the state contacted. When a further downward force is applied, as shown in FIG. 9, the locked portion 221 is positioned below the front locking portion 101a and the front plate portion 100a bent forward is restored, and the regulating member 2 is moved to the head. Attached to the box 10.

  In a state where the regulating member 2 is attached to the head box 10, the bottom surface of the main body 20 is placed on the upper end of the head box 10, and the rear locking portion 101 b is inclined at the bottom surface of the main body 20 and the non-regulating protrusion 21. The front locking portion 101 a is positioned between the bottom surface of the main body portion 20 and the locked portion 221 in the restricting protruding portion 22.

  Further, the regulating member 2 can be detached from the head box 10 by pulling the rear side of the regulating member 2 upward. At this time, the rear locking portion 101b is pressed rearward by the inclined surface on the rear side in the inclined portion of the non-regulating protrusion 21, and the rear plate portion 100b is bent to cause the non-regulating protruding portion 21 by the rear locking portion 101b to bend. The lock is released.

  As will be described in detail later, the regulating member 2 can be attached to the head box 10 in a state where it is inverted in the front-rear direction (see FIG. 13). When either one of the front locking part 101a or the rear locking part 101b locks the inclined surface, the restriction member 2 can be easily removed.

(Blind operation)
The operation of the blind with the restricting member attached will be described. FIG. 10 is a side sectional view showing the structure of the blind with the slats in a horizontal state. FIG. 11 is a side cross-sectional view showing a configuration of a blind in which slats are inclined. FIG. 12 is a side cross-sectional view showing the configuration of the blind with the slats in a fully closed state. FIG. 13 is a side cross-sectional view showing a configuration of a blind in which the regulating member is attached in the reverse direction. In FIGS. 10 to 13, the lifting / lowering cord and the ladder cord are omitted.

  As shown in FIG. 10, in a state where the slat 11 is oriented horizontally, the restricted portion 161a is in contact with the restricting portion 222, thereby restricting counterclockwise rotation in FIG. That is, the slat 11 is restricted from tilting so that the front thereof is positioned below, and the blind 1 does not enter the anti-fully closed state.

  On the other hand, as shown in FIG. 11, the clutch spring 16 is not restricted for clockwise rotation in FIG. 11, and as a result, the slat 11 is tilted so that the rear thereof is positioned downward. As shown in FIG. 3, the regulated portion 161b is tilted until the blind 1 is fully closed by contacting the regulating portion 142 of the drum base 14.

  Further, as shown in FIG. 13, it is possible to attach the regulating member 2 to the head box 10 in the reverse direction, that is, so that the non-regulating protrusion 21 is located at the front and the restricting protrusion 22 is located at the rear. is there. At this time, the locked portion 221 of the restricting protrusion 22 is locked to the rear locking portion 101b, and the non-restricting protruding portion 21 is locked to the front locking portion 101a. Accordingly, the clockwise rotation in FIG. 13 of the clutch spring 16 is restricted, and the slat 11 is prevented from tilting so that the rear thereof is positioned downward, and the counterclockwise rotation of the clutch spring 16 is allowed. Thus, the slat 11 is allowed to tilt so that the front thereof is positioned downward, and the slat 11 can tilt until the blind 1 is in the anti-fully closed state.

  As described above, the restriction member 2 for restricting the rotation angle of the clutch spring 16 can be attached from above the head box 10 to easily change the specifications of the blind 1, specifically, the maximum inclination angle of the slat 11. It becomes possible to do.

<Second Embodiment>
The configuration of the blind according to the second embodiment will be described. Since the blind according to this embodiment is different from the blind according to the first embodiment only in the configuration of the restriction member, only the configuration of the restriction member different from that in the first embodiment and the operation by this configuration will be described. FIG. 14 is a side cross-sectional view showing a configuration of a blind according to the second embodiment. FIG. 15 is a side sectional view showing a configuration of a blind in which slats are inclined to a maximum inclination angle. In FIGS. 14 and 15, the lifting / lowering cord and the ladder cord are omitted.

  As shown in FIGS. 14 and 15, the restricting member 2 a according to this embodiment has a restricting protrusion 23 and a non-restricting protrusion 24 in place of the non-restricting protrusion 21 and the restricting protrusion 22. This is different from the regulating member 2 according to the first embodiment. The restriction protrusion 23 and the non-restriction protrusion 24 are respectively provided on the bottom surface of the main body 20 at substantially the same positions as the non-restriction protrusion 21 and the restriction protrusion 22, and both protrude downward as a whole. Formed.

  The restricting protrusion 23 has a locked portion 231 that is inclined so that the lower end is located on the opposite side of the non-restricting protruding portion 24, and extends downward from the lower end of the locked portion 231, and a part thereof is not restricted. And a restricting portion 232 formed to protrude toward the protruding portion 24 side. The locked portion 231 is formed so as to be locked by the front locking portion 101a or the rear locking portion 101b. The restricting portion 232 is formed so as to be able to come into contact with the restricted portion 161a or the restricted portion 161b, and thereby, it is possible to restrict the counterclockwise rotation and the clockwise rotation of the clutch spring 16 in FIG.

  The non-regulating protrusion 24 has a locked portion 241 formed so as to protrude on the opposite side to the restricting protrusion 23. The locked portion 241 is formed so as to be locked by the rear locking portion 101a or the rear locking portion 101b.

  The locked portion 241 in the non-regulating protrusion 24 is formed in the width W1 similarly to the locked portion 221 of the restricting member 2 in the first embodiment. The other portions are formed with a width less than the width W1.

  The restriction portion 232 of the restriction protrusion 23 restricts the rotation of the clutch spring 16 in the counterclockwise direction so that the rotation angle is equal to or less than a predetermined rotation angle. As shown in FIG. 14, when the rotary drum 15 is rotated counterclockwise from the state in which the slat 11 is oriented horizontally, the regulated portion 161a of the clutch spring 16 is regulated on the drum base 14 as shown in FIG. Before contacting the portion 142a, it contacts the restricting portion 232. As a result, the blind 1a is not anti-fully closed, and the slat 11 tilts by a predetermined angle so that its front is positioned downward.

  Like the regulating member 2, the regulating member 2a can be reversed and attached to the head box 10 in this case. In this case, the blind 1a can be in an anti-fully closed state but not in a fully closed state. The slat 11 tilts by a predetermined angle so that its rear side is positioned downward. In this way, the maximum tilt angle of the slat 11 can be set to an angle suitable for daylight introduction, for example, and the tilt range of the slat 11 can be changed from the daylight introduction angle to a fully closed angle or an anti-fully closed angle.

  Although embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Blind 2 Control member 22 Control protrusion (1st protrusion)
222 Restriction unit 10 Head box 11 Slat 13 Ladder cord 15 Rotating drum (drum device)
16 Clutch spring (ladder clutch)
161a, 161b Restricted part

Claims (3)

A head box that defines a storage space that opens upward;
A drum device having a rotating shaft rotatably supported in the housing space and rotating integrally with the rotating shaft;
A rudder clutch wound around the outer periphery of the drum device and fastened to the drum device, and having regulated portions projecting outward in the radial direction of the drum device;
A ladder cord suspended from the head box and tiltable in accordance with the rotation of the ladder clutch;
A slat supported in an aligned state by the ladder cord;
A main body provided on the head box so as to be placed thereon, and a restriction portion that protrudes downward from the main body and comes into contact with the restricted portion to restrict the rotation of the ladder clutch. A horizontal blind comprising a regulating member having a protrusion. The head box has two locking portions that are provided opposite to each other in the front-rear direction at the upper end of the head box and each protrudes inward.
The restricting member has a second protrusion that protrudes downward from the main body at a position different from the first protrusion in the front-rear direction,
Each of the first protruding portion and the second protruding portion is formed with a locked portion that is locked to each of the two locking portions in a state where the main body portion is placed on the head box. The horizontal blind according to claim 1, wherein:   One of the locked portions respectively formed on the first protrusion and the second protrusion is formed as an inclined surface that is inclined so that the lower part is located outward in the front-rear direction. The horizontal blind according to claim 2.

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