JP2017223095A - Slat fixing device for blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slat fixing device for a blind that prevents deviation and dislocation from a slat when the slat is lifted/lowered.SOLUTION: A slat fixing device 100 is fitted on a slat 230, for pressing an intermediate stage cord 224 of a ladder cord 220 closely against a surface 230a of the slat 230. The slat fixing device 100 includes a base part 110 disposed facing the surface 230a of the slat 230, an engaging claw part 120 provided respectively on both sides of the slat 230 in a front-rear direction for engaging with the other surface 230b of the slat 230, and a connecting part 130 for connecting the base part 110 with the engaging claw part 120. A ladder cord guiding surface 140 is formed on the connecting part 130, the ladder cord guiding surface being of a chamfered form and having a same height as a base end 120b of the engaging claw part 120.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a blind slat fixing device.

  As a conventional blind slat fixing device, there is one disclosed in JP-A-2006-14276 (Patent Document 1). The blind slat fixing device disclosed in Patent Document 1 is provided with a flat contact surface for tightly attaching a middle cord to a lower surface of a wooden slat, and both sides of the contact surface, and locks each long side of the wooden slat. A first claw and a second claw, and a middle cord insertion portion provided between the first claw and the second claw and through which the middle cord is inserted. In the contact surface, a pair of slits are formed in the vicinity of the first claw and the second claw so that the contact surface has flexibility in the direction perpendicular to the lower surface of the wooden slat and in the width direction of the wooden slat. The The contact surface between the slit and the first claw and the second claw is a fixing portion that clamps and fixes the middle cord between the first claw and the second claw. The contact surface between the pair of slits is an elastic portion that presses the middle cord against the lower surface of the wooden slat.

  According to such a configuration, the blind slat fixing device has flexibility due to the slits on the contact surface, so that the slat shape changes due to the wooden slats and dimensional variations that differ from one slat to another. It can be absorbed by deformation of the contact surface. Further, since the contact surface has the fixed portion and the elastic portion, the middle cord can be sandwiched by the fixed portion and pressed firmly by the elastic portion. For this reason, the blind slat fixing device has an effect that it can be always attached to the wooden slat in an optimal state.

Japanese Patent Laying-Open No. 2014-14276

  By the way, in the conventional blind slat fixing device, the first claw and the second claw, which are provided on both sides of the contact surface and lock the long sides of the wooden slats, extend along the side surfaces of the slats. The outer surface along the direction in which the vertical code of the ladder cord is arranged is a vertical surface.

  Normally, the vertical code of the ladder code is folded so as to be folded left and right when the slat is folded. However, when the vertical cord is shifted to the left or right, the vertical cord may be caught on the vertical surface. If the slats are moved up and down in this state, when the vertical cord is tensioned, a load is applied to the vertical surface of the blind slat fixing device, and the blind slat fixing device is displaced from or detached from the wooden slat. There was a risk of it.

  Such a phenomenon is particularly prominent in a blind slat fixing device that can be used as both a wide ladder tape and a part, because the gap between the pair of locking claws is widened, and it is easily affected by a load caused by a vertical cord. It was a problem.

  Therefore, the present invention has been made in view of such a problem, and an object of the present invention is to provide a blind slat capable of preventing the slat from being deviated from or detached from the slat. It is to provide a fixing device.

  In order to solve the above problems, according to the present invention, there is provided a blind slat fixing device for attaching a middle cord of a ladder cord to one surface of the slat, which is attached to the slat. A base portion disposed facing the surface, a pair of locking claw portions provided on both sides of the slat in the front-rear direction, and locking the other surface of the slat; the base portion and the locking claw portion; A ladder cord guide surface having a shape in which a corner having a height substantially the same as a base end of the locking claw portion is dropped. A blind slat fixing device is provided.

  According to such a configuration, the connecting portion is formed with the ladder cord guide surface having a shape with a corner that is substantially the same height as the base end of the locking claw portion, so that the slats are folded and the ladder cord vertical When the cord is folded while turning left and right, the ladder cord guiding surface has a shape along the folding direction of the vertical cord, so that the vertical cord can be prevented from being caught. Therefore, the blind slat fixing device is prevented from being displaced from or disengaged from the slat due to the raising / lowering operation of the slat.

  The present invention can be applied in various ways. For example, the position of the upper end of the ladder code guiding surface may coincide with the position of the base end of the locking claw portion. In this way, the ladder code guiding surface is continuously formed from the position of the base end of the locking claw portion by matching the position of the upper end of the ladder code guiding surface with the position of the base end of the locking claw portion. Thus, the vertical cord can be further prevented from being caught. Therefore, it is further prevented that the blind slat fixing device is displaced or detached from the slat due to the raising / lowering operation of the slat.

  According to the blind slat fixing device of the present invention, it is possible to prevent the slat from being displaced from or disengaged from the slat by the lifting operation of the slat. Other effects of the present invention will also be described in a mode for carrying out the invention described later.

It is a front view of the horizontal blind which implemented the slat fixing device for blinds concerning one Embodiment of this invention. It is a perspective view which shows the state which attached the slat fixing device for blinds to the slat. It is sectional drawing which shows the state which attached the slat fixing device for blinds to the slat. It is a perspective view of the slat fixing device for blinds. It is a figure for demonstrating the slat fixing device for blinds, (a) is a front view, (b) is a top view, (c) is a bottom view, (d) is a right view, (e) is a left view. (F) is AA sectional drawing of (b). It is a figure for demonstrating the state of the slat fixing device for blinds and a vertical cord when lowering the folded slat, (a) shows a state when a slat is folded, (b) is a slat. (C) shows the state where the uppermost slat is completely lowered. It is a perspective view of the conventional slat fixing device for blinds. It is a figure for demonstrating the state of the conventional blind slat fixing device and vertical cord when lowering the folded slat, (a) shows a state when a slat is folded, (b) Indicates the state immediately after the start of descent of the slat, and (c) indicates the state where the uppermost slat is further lowered.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, the duplicate description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  The blind slat fixing device according to this embodiment is attached to the uppermost slat of the blind to fix the slat and the ladder cord, and is also called a slat clip because it is attached to the slat like a clip. The slat to which the slat fixing device is attached is a wooden slat made of natural wood or an aluminum slat. In this embodiment, a wooden slat will be described as an example. First, the configuration of the present embodiment will be described with reference to FIGS. FIG. 1 is a front view of a horizontal blind in which a slat fixing device is implemented. FIG. 2 is a perspective view showing a state in which the slat fixing device is attached to the slat. FIG. 3 is a cross-sectional view showing a state in which the slat fixing device is attached to the slat. FIG. 4 is a perspective view of the slat fixing device. FIG. 5 is a diagram for explaining the slat fixing device.

  First, an example of the horizontal blind 200 in which the slat fixing device 100 which is a characteristic component of this embodiment is used will be described.

  As shown in FIG. 1, the horizontal blind 200 in which the slat fixing device 100 is implemented includes a head box 210 fixed to a window frame or the like (not shown), a ladder cord 220 that can be tilted from the head box 210, and A large number of slats 230 supported in alignment with the ladder cord 220, a slat fixing device 100 that is attached to the uppermost slat 230 supported by the ladder cord 220 and fixes the ladder cord 220 and the slat 230, and a ladder cord A bottom rail 240 to which the lower end of 220 is connected, a lifting cord 250 that can be moved up and down along the side edge of the slat 230 from the head box 210, and a lower cord that is connected to the bottom rail 240 at the lower end. And operate the ladder cord 220 and the lifting cord 250 Configured to include an operation code 260 of the fit, the.

  A rotation shaft 212 that is rotated by an operation code 260 is provided in the head box 210 in the longitudinal direction. A tilt drum 214 and a take-up drum 216 pass through the rotation shaft 212, and when the rotation shaft 212 rotates, the tilt drum 214 rotates integrally, and the rotation is transmitted to the take-up drum 216.

  The upper end of the ladder cord 220 is connected to the tilt drum 214. As the ladder cord 220 is wound and unwound on the tilt drum 214, the slat 230 tilts. The ladder cord 220 tilts following a certain range of rotation of the tilt drum 214, and slips and does not follow any further rotation of the tilt drum 214. Further, the upper end of the lifting / lowering cord 250 is connected to the winding drum 216. As the lifting / lowering cord 250 is wound and unwound by the winding drum 216, the slat 230 is lifted and lowered.

  As shown in FIG. 2, the ladder cord 220 includes front and rear vertical cords 222 and two middle cords 224 that connect the front and rear vertical cords 222. The front and rear vertical cords 222 are disposed along the front and rear edges of the slat 230. As shown in FIG. 3, the middle cord 224 supports the slats 230 placed on the middle cords 224-1 and 224-2 or inserted between the upper and lower middle cords 224-1 and 224-2. .

  Next, the slat fixing device 100 which is a characteristic component of this embodiment will be described.

  The slat fixing device 100 prevents the slat 230 from being displaced from the ladder cord 220. As shown in FIGS. 2 and 3, the slat fixing device 100 is attached to the slat 230, and the middle cords 224-1 and 224-2 of the ladder cord 220 are brought into close contact with one surface 230 a of the slat 230, 230 is prevented from shifting. As shown in FIGS. 2 to 4, the slat fixing device 100 is provided with a base 110 disposed to face one surface 230 a of the slat 230 and a pair of slats on both sides in the front-rear direction of the slat 230. It has the latching claw part 120 which latches the other surface 230b, and the connection part 130 which connects the base part 110 and the latching claw part 120.

  The connecting portion 130 is formed with a ladder cord guide surface 140 having a shape with a corner having the same height as the base end 120b of the locking claw 120. The slat fixing device 100 is attached to the slat 230 by holding the slat 230 between the base portion 110 and the locking claw portion 120.

(Base 110)
As shown in FIGS. 2 and 3, the base portion 110 is disposed to face one surface 230 a of the slat 230 and sandwiches the slat 230 together with the locking claw portion 120. As shown in the front view of FIG. 5 (a), the base 110 has a thin flat plate shape when viewed from the front, as shown in the plan view of FIG. 5 (b) and the bottom view of FIG. 5 (c). In a plan view and a bottom view, it is formed in a substantially M shape. With such a configuration, the base 110 can be expanded and contracted in a substantially M-shaped left-right direction.

(Locking claw 120)
As described above, the locking claw portion 120 holds the slat 230 together with the base portion 110. As shown in FIGS. 2 and 3, a pair of locking claws 120 are provided on both sides in the front-rear direction of the slat 230 and are locked to the other surface 230 b of the slat 230. As shown in the plan view of FIG. 5 (b), the locking claws 120 are provided at both ends of the left and right sides of the base 110 in the plan view. As shown in the right side view of FIG. 5D and the left side view of FIG. 5E, the distal end 120a of the locking claw 120 is curved in the direction of the base 110 in the right side view and the left side view. doing. As a result, the locking claw 120 is locked to the slat 230 with the tip 120 a being pressed against the slat 230.

(Connecting part 130)
The connection part 130 connects the base part 110 and the latching claw part 120, and is arrange | positioned along the side surface before and behind the slat 230, as shown in FIG.2 and FIG.3. As shown in the right side view of FIG. 5D and the left side view of FIG. 5E, the connecting portion 130 rises substantially vertically from the base portion 110. Further, as shown in the AA cross-sectional view of FIG. 5 (f), the connecting portion 130 has a ladder cord guiding surface having a shape with a corner having the same height as the base end 120 b of the locking claw portion 120. 140 is formed. As shown in the plan view of FIG. 5B, the side portion of the connecting portion 130 is configured as a curved surface.

(Ladder code guide surface 140)
When the slat 230 is lowered from the state in which the ladder cord guiding surface 140 is folded while the slat 230 is folded and the vertical cord 222 of the ladder cord 220 is folded back to the left and right, the vertical cord 222 is caught by the connecting portion 130. This is to avoid this. As described above, the ladder code guide surface 140 has a shape in which the corner having the same height as the base end 120b of the locking claw 120 of the connecting portion 130 is dropped, and is shown in the front view of FIG. As described above, the tapered surface is formed over the entire length of the side portion of the connecting portion 130. Further, as shown in the AA cross-sectional view of FIG. 5 (f), the ladder cord guide surface 140 is positioned so that the position of the upper end 140a of the ladder cord guide surface 140 is the same as the position of the base end 120b of the locking claw 120. Match. The ladder code guiding surface 140 has the lower end 140b positioned at the end of the base 110.

  The configuration of the slat fixing device 100 according to this embodiment has been described above. Next, the state of the slat fixing device 100 and the vertical cord 222 when the slat 230 is lowered will be described with reference to FIG. FIG. 6 is a view for explaining the state of the slat fixing device 100 and the vertical cord 222 when the folded slat 230 is lowered.

  As shown in FIG. 6A, when the slat 230 is folded, the vertical cord 222 is folded while being folded left and right. At this time, in the portion of the slat fixing device 100, the vertical cord 222 is folded along the periphery of the connecting portion 130 of the slat fixing device 100.

  Immediately after the descent of the slat 230 is started, the vertical cord 222 is turned from the head box 210 from the state where the vertical cord 222 is folded along the ladder cord guiding surface 140 of the connecting portion 130 of the slat fixing device 100 as shown in FIG. Move in the direction of the hanging position. At this time, the vertical cord 222 moves while contacting the ladder cord guiding surface 140 of the connecting portion 130. However, the ladder code guide surface 140 is formed continuously from the position of the base end 120b of the locking claw 120, with the position of the upper end 140a coinciding with the position of the base end 120b of the locking claw 120. That is, the ladder cord guiding surface 140 has a shape along the folding direction of the vertical cord 222. For this reason, the catch of the vertical cord 222 is suppressed, and the vertical cord 222 gets over the connecting portion 130 without being caught by the connecting portion 130.

  When the uppermost slat 230 is completely lowered, as shown in FIG. 6C, the vertical cord 222 moves completely over the connecting portion 130 and moves to a position depending from the head box 210.

(Effects of the first embodiment)
The effect of this embodiment will be described in comparison with the conventional slat fixing device 300 shown in FIGS. FIG. 7 is a perspective view of a conventional slat fixing device 300. FIG. 8 is a view for explaining the state of the conventional slat fixing device 300 and the vertical cord 222 when the folded slat 230 is lowered.

  In the conventional slat fixing device 300, as shown in FIG. 7, the connecting portion 330 has a corner 330 a at substantially the same height as the base end 320 b of the locking claw portion 320. When such a conventional slat fixing device 300 is used, when the slat 230 is folded, as shown in FIG. 8A, in the portion of the slat fixing device 300, the vertical cord 222 is a slat fixing device. It is in a state of being folded along the periphery of the connecting portion 330 of 300. Then, when the descent of the slat 230 is started, as shown in FIG. 8B, the vertical cord 222 that attempts to move to a position depending on the descent of the head box 210 due to the descent of the slat 230 does not get over the connecting portion 330 and is connected. The part 330 is hooked on the corner 330a. When the slat 230 is further lowered in a state where the vertical cord 222 is hooked on the corner 330a of the connecting portion 330, the vertical cord 222 is tensioned. For this reason, as shown in FIG. 8C, the vertical cord 222 shifts or removes the slat fixing device 300 located at the position indicated by the two-dot chain line in the drawing to the position indicated by the solid line. I'll be relaxed.

  On the other hand, according to this embodiment, the connecting portion 130 is formed with the ladder cord guiding surface 140 having a shape with a corner that is substantially the same height as the base end 120b of the locking claw 120. When the slat 230 is folded and the vertical cord 222 of the ladder cord 220 is folded while being folded left and right, the ladder cord guiding surface 140 has a shape along the folding direction of the vertical cord 222. The hooking of 222 can be avoided. Therefore, the slat fixing device 100 is prevented from being displaced from or detached from the slat 230 due to the raising / lowering operation of the slat 230.

  Further, by matching the position of the upper end of the ladder code guiding surface 140 with the position of the base end 120b of the locking claw 120, the ladder code guiding surface 140 is continuously formed from the position of the base end 120b of the locking claw 120. As a result, the vertical cord 222 can be further prevented from being caught.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this example. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  For example, in the above embodiment, the position of the upper end 140a of the ladder code guiding surface 140 is the same as the position of the base end 120b of the locking claw 120, but the present invention is not limited to this example. If the corner having the same height as the base end 120b of the locking claw portion 120 of the connecting portion 130 is dropped, a certain degree of effect can be obtained. Therefore, the base end 120b of the locking claw portion 120 is not necessarily obtained. It does not have to coincide with the position.

  Moreover, although the ladder code | guide guide surface 140 was set as the structure formed over the full length of the side part of the connection part 130, this invention is not limited to this example. If the ladder code guide surface 140 includes a portion having the same height as the base end 120 b of the locking claw portion 120 of the connecting portion 130, the ladder code guiding surface 140 is provided only on a part rather than the entire length of the side portion of the connecting portion 130. Also good. For example, a ladder code guide surface 140 such as a taper or a curved surface is provided on a side portion of the connecting portion 130 including a height equal to the base end 120 b of the locking claw portion 120. It may be configured such that other portions are provided in a straight line.

  Further, although the ladder code guiding surface 140 is a tapered surface, the present invention is not limited to this example. For example, a curved surface or a notch may be used as long as the corner having the same height as the base end 120b of the locking claw portion 120 of the connecting portion 130 is dropped.

DESCRIPTION OF SYMBOLS 100 Slat fixing device 110 Base part 120 Locking claw part 120a Front end 120b Base end 130 Connecting part 140 Ladder cord guide surface 140a Upper end 140b Lower end 200 Horizontal blind 210 Head box 212 Rotating shaft 214 Tilt drum 216 Winding drum 220 Ladder cord 222 Vertical code 224, 224-1, 224-2 Middle stage code 230 Slat 230a One side 230b The other side 240 Bottom rail 250 Lifting code 260 Operation code 300 Slat fixing device 320 Locking claw part 320b Base end 330 Connecting part 330a Corner

Claims (2)

A slat fixing device for a blind, which is attached to a slat and for bringing a middle cord of a ladder cord into close contact with one surface of the slat,
A base disposed facing one side of the slat;
A pair of hooks provided on both sides in the front-rear direction of the slat, and a locking claw portion for locking the other surface of the slat;
A connecting portion for connecting the base portion and the locking claw portion;
Have
The blind slat fixing device according to claim 1, wherein a ladder cord guide surface having a shape in which a corner having substantially the same height as the base end of the locking claw portion is dropped is formed on the connecting portion. 2. The blind slat fixing device according to claim 1, wherein a position of an upper end of the ladder cord guide surface coincides with a position of a base end of the locking claw portion.