JP6972463B2 - blind - Google Patents

Description

The present invention relates to blinds.

Conventionally, a blind having slats formed so that a short piece and a long piece form a predetermined angle between the short piece and the long piece is known.

For example, in Patent Document 1 below, in an angled slat having a short piece and a long piece, the angle of the apex connecting the short piece and the long piece is 130 ° to 170 °, and the edge in the longitudinal (length) direction of the short piece. Elevating cord insertion holes are formed 18 to 26% from the part and 25 to 50% from the edge of the short piece in the short (width) direction, and the long piece is evenly vertical when the slats are in the completely closed position. It is disclosed to be.

According to this technique, when the slats are rotated toward the long one side, the long one side is evenly rotated to a vertical angle to improve the shielding property.

U.S. Pat. No. 6,167,938

However, in the technique described in Patent Document 1, when the slats rotate toward the short piece side, the elevating cord is inserted through the short piece side, so that the elevating cord in a tense state hinders the rotation of the short piece. There is a problem that it cannot rotate up to a vertical angle and it is not possible to obtain sufficient shielding properties.

In view of the above circumstances, an object of the present invention is that a slats having a short piece and a long piece having a predetermined angle can be rotated in either the short piece side or the long piece side to obtain a high shielding property. It is to provide blinds.

In order to achieve the above object, the blind according to one embodiment of the present invention has a head box, a plurality of ladder cords, a plurality of slats, and a plurality of elevating cords. The headbox has a rotating shaft inside. The plurality of ladder cords are hung from the head box and can be tilted in a first direction and a second direction opposite to the first direction in conjunction with the rotation of the rotation shaft. The plurality of slats are supported in an aligned state with the ladder cord. The plurality of elevating cords are hung from the head box and can elevate the slats. The slats also have long pieces and short pieces. The strip has a first width in the direction perpendicular to the axis of rotation. The short piece has a second width shorter than the first width in the vertical direction, and forms a predetermined angle with the long piece as an apex sharing one end in the second width direction with the long piece. It has a notch at the other end in the second width direction through which the elevating cord is inserted. Then, the slats rotate to an angle at which the main surface of the long piece is substantially vertical with the elevating cord in contact with the notch due to the tilt of the ladder cord in the first direction, and the ladder cord is used. Due to the tilting of the above in the second direction, the main surface of the short piece is rotated to an angle substantially vertical or exceeding the vertical while the elevating cord is separated from the notch.

According to this configuration, the elevating cord can be inserted into the notch formed at the other end of the short piece by the slat, so that the elevating cord can take a state close to the slat and a state separated from the slat. When tilting the rudder cord in one direction, the elevating cord rotates until one side of the rudder cord is approximately vertical with the notch inserted, and when tilting the rudder cord in the other direction, the elevating cord separates from the notch. The short piece can be rotated until it is approximately vertical or at an angle exceeding vertical, and the slats can obtain high shielding properties regardless of the direction of rotation.

The blind according to another embodiment of the present invention has a headbox, a plurality of ladder cords, a plurality of slats, and a plurality of elevating cords. The headbox has a rotating shaft inside. The plurality of ladder cords are hung from the head box and can be tilted in a first direction and a second direction opposite to the first direction in conjunction with the rotation of the rotation shaft. The plurality of slats are supported in an aligned state with the ladder cord. The plurality of elevating cords are hung from the head box and can elevate the slats. The slats also have long pieces and short pieces. The strip has a first width in the direction perpendicular to the axis of rotation. The short piece has a second width shorter than the first width in the vertical direction, and forms a predetermined angle with the long piece as an apex sharing one end in the second width direction with the long piece. It has a notch at the other end in the second width direction through which the elevating cord is inserted. Then, the elevating cord comes into contact with the notch in the state where the short piece is located above the long piece in the hanging direction due to the tilting of the ladder code in the first direction, and the ladder code is described above. By tilting in the second direction, the short piece comes into contact with the apex in a state where the short piece is located below the long side in the drooping direction.

According to this configuration, the elevating cord is inserted through the notch formed by the slats at the other end of the short piece, so that no matter which direction the slats rotate, at least the apex is formed in the front-rear direction of the slats. It can be rotated to an angle that almost coincides with the slat edge, and the elevating cord contacts the top so as to press in the direction in which the slat stands up, so that high shielding properties can be obtained.

Three elevating cords may be provided from one end side to the other end side in the longitudinal direction of the slats. In this case, the two elevating cords on both ends are arranged near one end of the slats in the width direction, and one elevating cord between the two elevating cords is arranged near the other end of the slats in the width direction. You may.

In a slat having a short piece and a long piece, the center of gravity is deviated from the center when the slat is folded up, so that it tends to tilt to the long side. By arranging them alternately in the direction, the slats can be folded up without tilting back and forth regardless of the position of the center of gravity.

As described above, according to the present invention, a slats having a short piece and a long piece having a predetermined angle can be rotated in either the short piece side or the long piece side to obtain a high shielding property. However, the effect does not limit the present invention.

It is a front view of the blind which concerns on one Embodiment of this invention. It is a right side view of the said blind. It is a perspective view of the slat of the said blind. It is a figure for defining the length and the angle of each part of the said slats, and the length of each part of the ladder code of the said blind. It is a figure explaining the setting method of the angle formed by the long piece and the short piece of the said slats. It is a figure explaining the setting method of the depth of the notch part of the said slats. It is a side view and a cross-sectional view which showed the horizontal state of the said slats. It is a side view, a cross section, and a perspective view which showed the state when the slats were fully closed. It is a side view, a cross section, and a perspective view which showed the state of the said slats in the reverse fully closed state.

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

[Blind configuration]
FIG. 1 is a front view of the blind according to the present embodiment when the slats are horizontally (fully opened). 2A and 2B are a right side view of the blind when the slat is horizontal (FIG. A) and a right side view of the slat in a folded state (FIG. B).

As shown in both figures, the blind 100 has a headbox 1, a plurality of slats 2, a plurality of ladder cords 3, a plurality of elevating cords 4, and a bottom rail 6.

The ladder code 3 hangs down from the head box 1, and a plurality of slats 2 are supported in an aligned state by the ladder code 3. The lower end of the ladder cord 3 is connected to the bottom rail 6 provided below the slats 2.

As shown in FIGS. 2 and 3, the ladder code 3 is located between the vertical cords 3a before and after hanging from the headbox 1 and the vertical cords 3a before and after at a predetermined interval in the vertical direction (Y direction). It consists of a middle code 3b erected on the ladder. The middle cord 3b is composed of a pair of upper and lower cords slightly separated vertically, and the slats 2 are supported by inserting the slats 2 between the upper and lower cords.

The elevating cord 4 is hung from the head box 1 and is arranged at a front-rear position offset from the center of the slats 2 in the lateral direction (Z direction in FIGS. 1 and 2), and the lower end thereof is connected to the bottom rail 6. As a result, the slats 2 can be raised and lowered.

In FIG. 1, a total of three elevating cords 4 are provided at both ends and in the center from one end side to the other end side in the longitudinal direction of the slats 2. Specifically, in the elevating cord 4, the two elevating cords 4 on both ends in the longitudinal direction are arranged in the vicinity of one end (back side of the blind 100) in the width direction (Z direction) of the slat 2, and the above 2 One elevating cord in the center between the elevating cords 4 is arranged near the other end (front side of the blind 100) in the width direction (Z direction) of the slat 2. However, these numbers and positions are not limited to those shown in this embodiment.

The plurality of slats 2 function as a shielding material for guiding or shielding external light into the room in a window or wall surface on which the blind 100 is installed by opening and closing between the slats due to the tilt of the ladder code 3. ..

The head box 1 is fixed to a predetermined surface such as a window frame or a wall by screws or the like by a bracket 11 provided from the upper surface to the back surface thereof, for example. Headbox caps 12 are detachably provided on the left and right side surfaces of the headbox.

Although not shown, an elevating and rotating device into which the upper ends of the ladder cord 3 and the elevating cord 4 are introduced is provided inside the head box 1. The elevating and rotating device is provided with a rotating shaft that can rotate in the head box 1.

The rotation axis is connected to the operation code 7 and can rotate in either direction in conjunction with the user's operation on the operation code 7. The ladder code 3 is linked to the rotation of the rotation axis in a first direction (counterclockwise direction in the state shown in FIG. 2) and a second direction opposite to the first direction (also a clock). It can be tilted in the clockwise direction).

In addition to the rotating shaft, the elevating and rotating device includes a drum receiver, and a rotating drum and an elevating drum rotatably supported by the drum receiver via the rotating shaft.

The upper end of the ladder cord 3 is hung on the rotating drum. When the operation code 7 is operated by the user, the ladder code 3 tilts in conjunction with the rotation of the rotating drum within a predetermined angle range to rotate the slats 2. As a result, the inclination angle of the slats 2 (open state and closed state between the slats 2) is adjusted.

The elevating drum is connected to the upper end of the elevating cord 4 at one end of its outer peripheral surface. When the operation code 7 is operated by the user, the elevating cord 4 is wound on the outer peripheral surface of the elevating drum, or the elevating cord 4 is unwound from the outer peripheral surface of the elevating drum, so that the slats 2 are on the bottom rail 6. It is raised and lowered while being stacked on the drum.

[Slat configuration]
Next, the slat 2 of the blinds 100 will be described.

The plurality of slats 2 function as a shielding material for guiding or shielding external light such as solar radiation into the room in the window or wall surface where the blind 100 is installed by opening and closing between them. The slats 2 are made of wood, for example, but may be made of other materials such as aluminum.

FIG. 3 is a perspective view of one slat 2. As shown in the figure, the slats 2 have a long piece 2a and a short piece 2b. The long piece 2a has a first width in the vertical direction (Z direction) of the rotation axis, and the short piece 2b has a second width shorter than the first width in the vertical direction (Z direction). ..

The long piece 2a and the short piece 2b are connected so that their main surfaces form a predetermined angle (obtuse angle) as an apex 2c sharing one end in each of the first width direction and the second width direction. There is.

The short piece 2b has a notch 21 through which the elevating cord 4 is inserted (accommodated) at the other end (edge portion in the lateral direction) in the second width direction. The notch 21 has, for example, a rectangular recess and two chamfered portions diagonally outward from both open ends of the recess.

Two notches 21 are provided in each slat 2, one on each of the left and right ends on the back (rear) side of the blind 100. That is, the notch 21 is provided corresponding to the elevating cord 4 on the back side of both the left and right ends of the three elevating cords 4. However, the position and number of the cutouts 21 are not limited to this.

Further, as shown in FIGS. 1 and 2, the guide member 5 is attached to the position of the uppermost slat 2 where the notch 21 is provided among the plurality of slat 2. The guide member 5 has a slope portion along the chamfered portion of the notch portion 21, and the slope portion allows the elevating cord 4 to be moved in the lateral direction of the slat 2 when the slat 2 is raised. It is possible to guide to the notch 21 from the outside of the. The guide member 5 also functions as a slat clip for fixing the slat 2 and the middle cord 3b of the ladder cord 3.

Here, the results of examination by the inventor and the like regarding the conditions of the length and angle of each part of the slats 2 (particularly, the angle (concave angle) formed by the long piece 2a and the short piece 2b and the depth of the notch 21) will be described. FIG. 4 is a diagram for defining the length and angle of each part of the slats 2 and the length of each part of the ladder code 3. Further, FIG. 5 is a diagram illustrating a method for setting an angle formed by the long piece 2a and the short piece 2b of the slat 2, and FIG. 6 is a diagram illustrating a method for setting the depth of the notch 21 of the slat 2. Is. In these figures, the shape of the slats 2 is simplified and shown linearly.

As shown in the figure, the width of the long piece 2a of the slat 2 is A, the width of the short piece 2b is B, the depth of the notch (length in the Z direction) is C, and the width of the slat 2 in the horizontal state is D. The angle formed by the long piece 2a and the short piece 2b is E, the pitch of the middle code 3b of the ladder code 3 in the vertical direction (Y direction) is F, and the width of the ladder code 3a (the length of the middle code 3b in the Z direction) is G. Is defined as.

In the present embodiment, not only when the slats 2 are rotated in the counterclockwise direction (first direction) of FIG. 2, but also when the slats 2 are rotated in the clockwise direction (clockwise direction) of FIG. One of the problems is to realize a state in which the adjacent slats 2 are close to each other and the slats 2 are shielded from each other (fully closed state). The latter fully closed state is referred to as a "reverse fully closed state" to distinguish it from the former fully closed state.

In the fully closed state, the main surface of the long piece 2a is in a substantially vertical state (parallel to the Y direction in FIG. 2), and in the inverted fully closed state, the apex 2c is located on the outdoor side, and the long piece 2a and the short piece are located. The recess formed by 2b is located on the indoor side.

FIG. 5 shows two slats 2 that rotate clockwise in FIG. 2 and are adjacent to each other in the vertical direction. _{First, the angle θ E} of the long piece 2a and the short piece 2b will be examined. Also the angle theta _alpha formed by the horizontal plane passing through the long side 2a and top side 2c, and the width from the end of the long piece 2a of the slats 2 to a position where the end of the short piece 2b are close to the slats 2 to be located above Let it be A'.

As shown in the figure, the following three conditions can be mentioned as conditions for rotating the slats 2 adjacent to the top and bottom to the fully closed position while approaching (approaching to the extent that they are almost in contact with each other).
(1) Bcos (θ _E − θ _α ) = (AA ′) cos θ _α
(2) (A-A') sinθ α + Bsin (θ E -θ α) = F
(3) Acos θ _α = g

From these (1), (2), and (3), the following equations can be obtained.
sinθ _E = Fg / AB ... [Equation 1]

_{Further, the angle θ E} of the angle between the long piece 2a and the short piece 2b of the slats 2 is determined by the following parameters.
・ F: Pitch of ladder code 3 (middle code 3b) ・ g: Width of ladder code 3 (middle code 3b) when fully closed ・ A: Width of long piece 2a of slat 2 ・ B: Short piece 2b of slat 2 width

Further, as further conditions, the following points are also required.
(4) A <F
(Conditions for the long piece 2a to be vertical when fully closed)
(5) D <G
(Conditions for enabling assembly by inserting the slat 2 between the middle cords 3a)

Here, the pitch F of the ladder code 3 (middle code 3b) is the same as the specifications of the conventional ladder code, and the length A of the long piece 2a is slightly shorter than that.

Further, the width g of the ladder code 3 when fully closed is determined by setting the maximum inclination angle of the middle code 3b of the ladder code 3 to 80 ° to 85 °, and the width D of the slat 2 is determined by the ladder code. Since it is almost determined by the relative relationship with the width G of 3, if the width B of the short piece 2b is determined, the angle θ _E is also determined.

Also, from the law of cosines, the following relationship holds.
cosθ _E = (A ² + (BC ^{) 2- d 2} ) / 2A (BC)
^{(6) d = √ (A} 2 + (B-C) 2 -2A (B-C) cosθ E)

In the present embodiment, the F is set to 42 mm, the g is set to 6.2 mm (actually, 8.2 mm when the thickness of the slat 2 (about 2 mm) is added), the A is set to 40 mm, and the B is set to 13 mm. ..

According to the above settings and conditions (1) to (6), in the present embodiment, the angle θ _E of the long piece 2a and the short piece 2b of the slats 2 is set to “θ _E = 150 °”.

Subsequently, the depth (length in the Z direction) C of the notch 21 will be examined. FIG. 6 is a diagram in which the concept of the thickness of the slat 2 is added to FIG. In the figure, the angle formed by the surface passing through the outer edge of the long piece 2a of the slat 2 and the end edge in the depth direction of the notch 21 with the long piece 2a is θ ₂ , and the angle between the long piece 2a and the vertical surface is formed. Let θ ₃ be.

Assuming that the thickness of the slats 2 is t, the length G of the middle cord 3b in the Z direction is expressed by the following equation.
_{(7) G ≧ d + g} a + t

Further, g _α = (BC) sin (180 ° −θ _E −θ ₃ ), and from this and the above equations (6) and (7), the length G of the middle cord 3b, the ladder when fully closed. The width g of the cord 3, the width A of the long piece 2a, the width B of the short piece 2b, and the depth C of the notch 21 can be expressed by the following relational expressions.
G ≧ d + (BC) sin (180 ° −θ _E −θ ₃ ) + t
g = Asinθ ₃ ... [Equation 2]

Here, assuming that g = 6.2 mm and A = 40 mm,
sinθ ₃ = 0.155
Here, since θ ₃ ≤ 90 °,
θ ₃ = 8.9 °
Will be.

Further, assuming that θ _E = 150 °, t = 2 mm, and G = 56 mm,
"BC ≤ 11.9 mm"
Therefore, it was found that the depth of the notch 21 should be set so that the length of BC is 11.9 mm or less.

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

FIG. 7 is a side view (FIG. A) and a cross-sectional view (FIG. B) showing the horizontal state of the slats 2. FIG. 8 is a side view (FIG. A), a cross-sectional view (FIG. B), and a perspective view (FIG. C) showing a fully closed state of the slats 2. FIG. 9 is a side view (FIG. A), a cross-sectional view (FIG. B), and a perspective view (FIG. C) showing the inverted fully closed state of the slats 2.

As shown in FIG. 8 (particularly, FIGS. B and C), each slat 2 is tilted from the horizontal state shown in FIG. 7 to the first direction (counterclockwise direction in the same figure) of the ladder code 3. In the state where the elevating cord 4 is in contact with the notch 21, the long piece 2a is rotated to an angle where the main surface is substantially vertical.

Further, in this case, as shown in FIG. 8, the elevating cord 4 comes into contact with the notch 21 in a state where the short piece 2b is located above the long piece 2a in the Y direction.

On the other hand, each slat 2 is shown in FIG. 9 (particularly, B and C in the same figure) by tilting the ladder code 3 from the horizontal state shown in FIG. 7 in the second direction (clockwise direction in the same figure). As described above, in a state where the elevating cord 4 is separated from the notch 21, the main surface of the short piece 2b rotates to an angle that is substantially vertical or exceeds vertical.

Further, in this case, as shown in FIG. 9, the elevating cord 4 comes into contact with the top side 2c in a state where the short piece 2b is located below the long side 2a in the Y direction.

In this way, the elevating cord 4 can take a state of being close to the slat 2 and a state of being separated from the slat 2, and the slat 2 can obtain a high shielding property even if it is rotated in any direction.

Further, regardless of the direction in which the slat 2 is rotated, at least the apex 2c can be rotated to an angle that substantially coincides with the end of the slat 2 in the front-rear direction of the slat 2, and the elevating cord 4 stands up the slat 2. Since it contacts the apex 2c so as to press in the direction of pressing, high shielding property can be obtained.

Further, in general, in a slat having a short piece and a long piece, when the slat is folded up, the center of gravity is deviated from the center, so that the slat tends to tilt to the long side. By arranging the 4s alternately in the front-rear direction of the slats 2, as shown in FIG. 2, it is possible to fold up the slats 2 without tilting them back and forth regardless of the position of the center of gravity.

<Modification example>
The present invention is not limited to the above-described embodiment, and can be variously modified without departing from the gist of the present technology.

The widths of the long piece 2a and the short piece 2b of the slat 2 shown in the above embodiment and the dent angle formed by them are examples, and can be appropriately changed as long as they do not contradict the conditions shown in FIGS. 4 to 6 above.

In the above-described embodiment, two notches 21 are provided at both ends on the back side for each slat 2, but only one may be provided at the center of the front side or the back side, and the front side or the back side may be provided. 3 or more may be provided in. In this case, the plurality of notches 21 may be provided symmetrically with respect to the line in the Y direction that divides the length of the slats 2 in the longitudinal direction into two.

Further, in that case, the elevating cord 4 may be provided so as to correspond to all the notches 21 in a one-to-one manner, or may be provided alternately on the front side and the back side (front and back) as in the above embodiment. It may be provided and at least a part thereof corresponds to the notch 21.

1 ... Headbox 2 ... Slat 2a ... Long piece 2b ... Short piece 2c ... Top 3 ... Ladder code 4 ... Elevating code 21 ... Notch

Claims (3)

A headbox with a rotating shaft inside,
A plurality of ladder cords that are hung from the head box and can be tilted in a first direction and a second direction opposite to the first direction in conjunction with the rotation of the rotation axis.
With a plurality of slats supported in an aligned state on the ladder cord,
A plurality of elevating cords hanging from the head box and capable of elevating the slats,
Equipped with
The slats are
A long piece having a first width in the direction perpendicular to the axis of rotation,
It has a second width shorter than the first width in the vertical direction, and is connected so as to form a predetermined angle with the long piece as an apex sharing one end in the second width direction with the long piece. , A short piece having a notch through which the elevating cord is inserted at the other end in the second width direction.
By tilting the ladder cord in the first direction, the elevating cord rotates to an angle at which the main surface of the long piece is substantially vertical with the elevating cord in contact with the notch.
A blind that rotates the main surface of the short piece to an angle that is substantially vertical or exceeds vertical while the elevating cord is separated from the notch by tilting the ladder cord in the second direction. A headbox with a rotating shaft inside,
A plurality of ladder cords that are hung from the head box and can be tilted in a first direction and a second direction opposite to the first direction in conjunction with the rotation of the rotation axis.
With a plurality of slats supported in an aligned state on the ladder cord,
A plurality of elevating cords hanging from the head box and capable of elevating the slats,
Equipped with
The slats are
A long piece having a first width in the direction perpendicular to the axis of rotation,
It has a second width shorter than the first width in the vertical direction, and is connected so as to form a predetermined angle with the long piece as an apex sharing one end in the second width direction with the long piece. , A short piece having a notch through which the elevating cord is inserted at the other end in the second width direction.
The elevating cord is
By tilting the ladder cord in the first direction, the short piece comes into contact with the notch in the state where the short piece is located above the long piece in the hanging direction.
A blind that comes into contact with the apex in a state where the short piece is located below the long side in the drooping direction due to the tilt of the ladder cord in the second direction. The blind according to claim 1 or 2.
Three elevating cords are provided from one end side to the other end side of the slat in the longitudinal direction, and two elevating cords on both ends are arranged near one end of the slat in the width direction. One elevating cord between the cords is located near the other end of the slats in the width direction .
The notch is a blind through which two elevating cords on both ends are inserted, or one elevating cord between the two elevating cords is inserted.

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