JP7179653B2 - BLIND - Google Patents

Description

The present invention relates to blinds.

2. Description of the Related Art Conventionally, there is a blind called a honeycomb screen formed by connecting a plurality of cylindrical cells having a hexagonal cross section so that they can be folded and unfolded.

Patent Document 1 below discloses that an opening can be shielded by a screen having a hexagonal honeycomb cross section in which a first surface and a second surface are connected by spacer means, and at least one of a frame plate and a screen forming the opening. A key means, which is a vertical frame, is attached to the frame plate and forms a slot from the side edge of the screen toward the inside of the spacer means to block light passing through the gap between the side edge of the screen and the key means. is disclosed to engage the slot.

Accordingly, by lowering the screen to cover the opening, it is possible to prevent light and heat energy from passing through between the screen and the opening.

EP-A-2395194

However, in the technique described in Patent Document 1, the key means consists of a flange that serves as an attachment portion to the frame plate, and a locking piece (web) that extends in a direction substantially orthogonal to the flange. Since the piece is formed on a flat surface, when the blind swings back and forth during lifting, the locking piece comes into surface contact with the screen or the slot formed in the bottom rail at the lower end of the screen, which prevents the lifting operation. The problem was that it was not stable.

SUMMARY OF THE INVENTION In view of the circumstances as described above, an object of the present invention is to provide a blind capable of stabilizing the lifting operation.

To achieve the above object, a blind according to one aspect of the present invention has a support member, a shielding material, a bottom rail, and a frame. The support member is fixed to the opening of the building. One end of the shielding material is supported by the supporting member and hangs from the supporting member so as to be able to move up and down. The bottom rail is provided at the other end of the shielding material and has a longitudinal notch at its longitudinal end. The frame has a shielding piece that is fixed to the opening and closes a gap between the opening and the shielding material. A portion of the shielding piece overlaps the shielding member in the longitudinal direction of the support member and is inserted through the notch. A protrusion that allows point contact or line contact between the shielding piece and the inner wall surface on at least one surface of the shielding piece or on at least one surface of the front and rear inner wall surfaces of the bottom rail forming the notch. is formed.

With this configuration, even if the inner wall surface of the notch on the side to be raised and lowered may come into contact with the shielding piece in the fixed state, it will be a point contact or a line contact in the raising and lowering direction. The resistance between shielding pieces is reduced, and stable up-and-down operation becomes possible.

The protrusion may be a shielding piece-side protrusion provided on at least the front surface of the front and rear surfaces of the shielding piece.

Thus, by providing the convex portion on the front side of the shielding piece, at least the front side of the shielding piece is in point contact or line contact in the vertical direction, so it is possible to suppress the occurrence of scratches on the shielding piece due to surface contact. .

The bottom rail may have an inner-wall-surface-side convex portion on a surface side facing the shield-piece-side convex portion, of the inner wall surfaces before and after forming the cutout portion.

Thus, by projecting the projections on the inner wall surfaces of the shielding piece and the notch toward each other, it is possible to prevent the bottom rail from tilting forward and backward even when it comes into contact with the shielding piece.

The bottom rail may have two inner wall surface-side protrusions on both surfaces of the inner wall surface before and after forming the notch portion, on the outer side in the longitudinal direction of the positions of the shielding one-side protrusions, so as to face each other. .

As a result, by forming protrusions on both the inner wall surfaces before and after forming the notch, the entrance of the notch becomes narrower, so the bottom rail is pushed by the screen or the like and tries to escape from the shielding piece. Also, since the convex portion on the side of the shielding piece is caught by the convex portion on the inner wall surface side, it is possible to prevent the shielding piece from coming off.

In this case, the frame may further have the shield piece-side protrusions at positions corresponding to both front and rear surfaces of the shield piece.

As a result, the effect of preventing the bottom rail from coming off from the shielding piece can be further enhanced. Here, when the front and rear shielding piece-side protrusions are formed at the tip of the shielding piece, the shielding piece-side protrusions may be integrally formed into a columnar shape.

As described above, according to the present invention, the lifting operation can be stabilized. However, this effect does not limit the invention.

1 is a plan view of a blind according to one embodiment of the present invention; FIG. Figure 2 is a front view of the blind of Figure 1; It is right side (YZ plane) sectional drawing of the said blind. It is a partial cross-sectional perspective view near the lower end part of the said blind. Figure 3 is a partially sectioned perspective view of the frame of the blind; 4 is a plan view of a frame body of the frame; FIG. It is plane (XZ plane) sectional drawing near the bottom rail edge part of the said blind. FIG. 8 is a diagram in which the shielding material is partially omitted from the plan cross-sectional view of FIG. 7 ; It is a plane enlarged sectional view near the bottom rail edge part which shows the insertion state to a bottom rail of the said flame|frame. FIG. 8 is an enlarged plan cross-sectional view of the vicinity of the end of the bottom rail, showing a state in which a frame according to another embodiment of the present invention is inserted into the bottom rail; FIG. 8 is an enlarged plan cross-sectional view of the vicinity of the end of the bottom rail, showing a state in which a frame according to another embodiment of the present invention is inserted into the bottom rail; FIG. 8 is an enlarged plan cross-sectional view of the vicinity of the end of the bottom rail, showing a state in which a frame according to another embodiment of the present invention is inserted into the bottom rail; FIG. 8 is an enlarged plan cross-sectional view of the vicinity of the end of the bottom rail, showing a state in which a frame according to another embodiment of the present invention is inserted into the bottom rail; FIG. 8 is an enlarged plan cross-sectional view of the vicinity of the end of the bottom rail, showing a state in which a frame according to another embodiment of the present invention is inserted into the bottom rail; 1 is a view showing a conventional blind in which a shielding piece is provided on a frame; FIG.

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

[Blind configuration]
FIG. 1 is a plan view of a blind according to this embodiment, and FIG. 2 is a front view of the blind. 3 is a right side (YZ plane) cross-sectional view of the blind, and FIG. 4 is a partial cross-sectional perspective view of the vicinity of the lower end of the blind.

As shown in these figures, the blind 100 according to this embodiment has a headbox 1 as a support member, a screen 2 as a shielding material, and a bottom rail 3 . Long frames 4 are provided on both sides of the blind 100 in the vertical direction (Y direction) of the blind 100 .

The headbox 1 is installed in an opening O such as a window frame of a building. The screen 2 is supported at its upper end by the head box 1 and suspended so as to be able to move up and down. A bottom rail 3 is provided at the lower end of the screen 2 . The frame 4 is provided so as to block the gap between the side portion of the blind 100 and the opening O. As shown in FIG.

As shown in FIGS. 1 to 3, the headbox 1 has a horizontally elongated rectangular parallelepiped shape, and is fixed to an opening O via a bracket 5 with screws or the like. Between the upper surface of the head box 1 and the opening O is provided an upper gap preventing material 8 such as mohair for closing the gap between the two.

As shown in FIG. 3, a winding drum 11 is provided inside the headbox 1 . A rotating shaft 10 passes through the winding drum 11, so that the winding drum 11 and the rotating shaft 10 are integrally rotatably supported. Although not shown, the head box 1 is also provided with a stopper or the like for switching between a state in which the rotation of the rotating shaft in the unwinding direction is permitted and a state in which it is restricted.

As shown in FIGS. 3 and 4, the screen 2 is a honeycomb screen formed by connecting a plurality of cylindrical cells each having a hexagonal cross section in the Y direction of the figure so that the cells can be folded and unfolded. The front-to-rear width (the length in the Z direction) of the screen 2 when folded is, for example, 25 mm. The material of the screen 2 is made of, for example, a material that does not transmit light, but it may be made of a see-through material.

A lifting cord insertion hole (not shown) is formed inside the screen 2, and a lifting cord (not shown) suspended from the head box 1 is inserted through the lifting cord insertion hole. The upper end of the lifting cord is connected to the winding drum 11 inside the head box 1 so as to be capable of winding and unwinding, and the other end of the lifting cord is connected to the bottom rail 3 .

At the right end of the head box 1, an operation unit 6 having a pulley or the like that can rotate integrally with the rotary shaft 10 is provided, and an operation cord 7 is wound around the pulley and led out. When the user operates the operation code 7, the elevating code is raised and lowered, and the bottom rail 3 is raised and lowered, whereby the screen 2 can be expanded and contracted.

Both ends in the longitudinal direction of the bottom rail 3 are opened so that the lower end of the screen 2 can be inserted during assembly, and bottom rail caps 31 are detachably provided in the openings.

On the bottom surface of the bottom rail 3, a lower clearance preventing member 9 such as rubber packing is provided to close the clearance between the opening O and the lower end of the bottom rail 3. As shown in FIG.

[Frame details]
Next, details of the frame 4 will be described together with relevant parts of the screen 2 and the bottom rail 3. FIG. 5 is a partial cross-sectional perspective view of the frame 4, and FIG. 6 is a plan view of the frame main body of the frame 4. As shown in FIG. 7 is a plane (XZ plane) sectional view of the vicinity of the end of the bottom rail 3, and FIG. 8 is a plan sectional view of FIG. 7 with the screen 2 partially omitted.

As shown in FIGS. 3, 4, 7 and 8, the screen 2 and the bottom rail 3 have rectangular notches 21 and notches extending in the X direction at the ends of the bottom rail 3 in the longitudinal direction (X direction). It has a part 32 . As shown in FIG. 8, the cutout portion 32 of the bottom rail 3 is formed by covering the cutout portion of the body of the bottom rail 3 with a bottom rail cap 31 having a shape along the cutout portion.

As shown in FIGS. 3 to 8, the frame 4 has a base portion 41, shielding pieces 42, and a cover member 43. As shown in FIGS. Further, as shown in FIG. 5, the upper end of the frame 4 is formed with an interference prevention portion 44 which is a notch for preventing interference with the left and right ends of the head box 1 .

As shown in FIGS. 7 and 8, the bottom surface of the base portion 41 is fixed to the opening portion O with screws or the like. The shielding piece 42 protrudes from the front end portion of the base portion 41 in the front-rear direction (Z direction) toward the screen 2 (and the bottom rail 3).

A part (for example, about four-fifths) of the shielding piece 42 overlaps the screen 2 and the bottom rail 3 in the longitudinal direction (Z direction) of the head box 1, and the notch 21 of the screen 2 and the bottom rail overlap each other. The notch 32 of 3 is inserted. As a result, the shielding piece 42 closes the gap between the opening O and the screen 2, prevents the inflow of air, and improves heat insulation.

The notches 21 and 32 are formed substantially at the center of the blind 100 (screen 2) in the front-rear direction (Z direction), and the shielding piece 42 inserted through the notches 21 and 32 extends in the front-rear direction (Z direction) of the base portion 41. By being provided at the front end portion of the base portion 41 , the base portion 41 is located on the rear side of the center of the blind 100 (screen 2 ) in the Z direction relative to the shielding piece 42 . As a result, the base portion 41 is not exposed to the front side of the blind 100, thereby improving the design.

The cover member 43 is detachable from the base portion 41 so as to cover a fixing member such as a screw for fixing the base portion 41 to the opening O, and covers the entire length of the frame 4 between the base portion 41 and the cover member 43. A space S is formed. In this embodiment, the cover member 43 has a convex cross-sectional shape, and is fixed by being inserted into and engaged with the concave portion of the inner side surface of the base portion 41 .

By forming the space S with the cover member 43, the heat insulation performance of the frame 4 itself can be improved, and the fixing members (screws, etc.) of the base portion 41 can be hidden to improve the design.

As shown in FIGS. 6 to 8, a protrusion 45 protruding in the Z direction is formed at the X-direction end of the front surface 42a of the shielding piece 42. As shown in FIGS. The convex portion 45 allows the shielding piece 42 to make point contact with the inner wall surface 33 of the cutout portion 32 of the bottom rail 3 in the front-rear direction (Z direction) in plan view.

As a result, even if the inner wall surface 33 of the notch 32 of the bottom rail 3 on the lifting side contacts the shielding piece 42 in the fixed state, the bottom rail 3 is in line contact in the lifting direction. and the shielding piece 42 is reduced, a stable up-and-down operation is possible, and the occurrence of damage to the shielding piece 42 due to surface contact can be suppressed.

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

First, when the screen 2 is folded from the unfolded state as shown in FIG. 11 are rotated integrally, the winding drum 11 winds up the lifting cord, the bottom rail 3 rises, and the screen 2 is sequentially folded from the lowest cell to the upper end cell. After that, when the operation of the operation cord 7 is finished, the rotation of the rotating shaft 10 is restrained by the stopper, and the screen 2 is maintained in the folded state.

Next, when the screen 2 is unfolded from the folded state, the operation cord 7 is operated to release the stopper. As a result, the bottom rail 3 and the screen 2 are lowered by their own weight, and the screen 2 is deployed.

FIG. 9 is an enlarged plan cross-sectional view of the vicinity of the end portion of the bottom rail 3, showing how the frame 4 is inserted into the bottom rail 3. As shown in FIG. FIG. 15 is a diagram showing a conventional blind provided with shielding pieces on a frame for comparison with FIG.

As shown in FIG. 15, when the conventional shielding piece PP having no convex portion is inserted through the cutout portion PS of the bottom rail, when the lifting operation is performed from the stationary state in FIG. ), surface contact between the shielding piece PP and the inner wall surface of the notch SS when the bottom rail 3 swings causes resistance, which not only makes the lifting and lowering unstable, but also damages the front surface of the shielding piece PP. Since the blind is likely to be scratched, the damaged shielding piece PP is exposed when the blind is folded up, impairing the design.

On the other hand, in the present embodiment, when the bottom rail 3 (screen 2) is in a stopped state as shown in FIG. The notch 21 is guided by the shielding piece 42, and as shown in FIG. The portion 45 makes point contact with the notch portion 32 and the notch portion 21 in plan view. As a result, a stable up-and-down operation is possible, and the shielding piece 42 and the inner wall surface 33 of the bottom rail 3 can be prevented from being damaged.

[summary]
As described above, according to the present embodiment, by providing the shielding piece 42 with the convex portion 45, the inner wall surface of the notch portion 32 of the bottom rail 3, which is the side on which the shielding piece 42 in the fixed state moves up and down, is provided. Even if they are in contact with each other, they are in line contact in the vertical direction. Therefore, the resistance between the bottom rail 3 and the shielding piece 42 is reduced during vertical movement, and stable vertical movement is possible. In addition, by providing the convex portion 45 on the front surface 42a of the shielding piece 42, at least the front surface 42a side of the shielding piece 42 is in point contact with the convex portion 45 in a plan view, so the shielding piece 42 is damaged due to surface contact. can be suppressed.

[Modification]
The present invention is not limited to the above-described embodiments, and can be modified in various ways without departing from the gist of the present technology.

In the above embodiment, one projection 45 is provided at the end of the front surface 42 a of the shielding piece 42 . However, the location and number of protrusions are not limited to this. Modifications of the convex portion will be described below.

In the above-described embodiment, as shown in FIG. 10, two projections 45a and 45b may be provided not only on the front surface 42a of the shielding piece 42, but also on both the front surface 42a and the back surface 42b of the shielding piece 42 at corresponding positions. good. As a result, even if the bottom rail 3 swings in any of the forward and backward directions, it is possible to move up and down in a stable manner.

In the above-described embodiment, as shown in FIG. 11, a plurality of projections 45 may be provided on the front surface 42a of the shielding piece 42. As shown in FIG. As a result, the bottom rail 3 can be prevented from tilting in the front-rear direction with respect to the shielding piece 42 .

In the above-described embodiment, not only the shielding piece 42 but also the convex portion 34 is formed on at least the side of the front and rear inner wall surfaces 33 forming the notch portion 32 of the bottom rail 3 that faces the convex portion 45 on the side of the shielding piece 42 . may have. As a result, even when the notch 32 comes into contact with the shielding piece 42, the bottom rail 3 can be tilted in the front-rear direction by projecting the projections from the inner wall surface 33 of the shielding piece 42 and the notch 32 toward each other. can be made difficult.

In this case, as shown in FIG. 12, on both surfaces of the inner wall surface 33 before and after the notch 32 is formed, two protrusions are formed so as to face each other outward in the X direction from the positions of the protrusions 45 on the shielding piece 42 side. Portions 34a and 34b may be provided. It is preferable that the position of the convex portion 34a be as far away from the convex portion 45 on the side of the shielding piece 42 as possible in the Z direction. In the example shown in the figure, the projection 45 on the side of the shielding piece 42 is provided at the end of the projection of the shielding piece 42, whereas the projections 34a and 34b on the side of the inner wall surface 33 of the bottom rail 3 are It is provided at the (outer) end (near the inlet) of the notch 32 in the opposite direction to the projecting direction. As a result, since the entrance portion of the notch 32 is narrowed, even if the bottom rail 3 is pushed by the screen 2 or the like and tries to come out of the shielding piece 42, the convex portion 45 on the side of the shielding piece 42 does not reach the convex portion on the inner wall surface 33 side. Since it is hooked on 34, it can be prevented from coming off the shielding piece 42. - 特許庁

In this case, two projections 45a and 45b may be provided at corresponding positions on both front and rear surfaces of the shielding piece 42. As shown in FIG. In this case, as shown in FIG. 13, for example, a columnar projection 45 may be provided at the tip of the shielding piece 42 so that the two projections 45 are integrated on the front and rear surfaces. 12, the effect of preventing the bottom rail 3 from coming off from the shielding piece 42 can be further enhanced. Further, even when the bottom rail 3 swings in the longitudinal direction and the arc portion of the convex portion 45 comes into contact with the inner wall surface located at the end of the notch portion 32 in the X direction, the two are in line contact in the vertical direction. It is possible to move up and down in a stable manner.

Further, as shown in FIG. 14 , instead of forming integrally with the notch 32 , the convex portion facing the entrance portion of the notch 32 is separately attached to the notch 32 (bottom rail cap 31 ) as a retaining member 35 . It may be attached by fitting.

In the above-described embodiment, the shielding piece 42 is provided with the convex portion 45 , but the shielding piece 45 is not provided with the convex portion, and the convex portion 34 is formed on at least one of the front and rear surfaces of the inner wall surface 33 of the notch portion 32 . may be provided.

1……Headbox 2……(Honeycomb) screen 3……Bottom rail 4……Frame 5……Bracket 6……Operation unit 7……Operation code 8……Top gap preventing material 9 --- Lower clearance prevention member 10 --- Rotating shaft 11 --- Winding drum 21 --- (Screen) cutout 31 --- Bottom rail cap 32 --- (Bottom rail) Cut-out 33 --- Inner wall surface 34 --- (Inner wall surface side) Convex portion 35 Retaining member 41 Base portion 42 (First) shielding piece 42a Front surface 42b Rear surface 43 Cover member 44 Interference prevention portion 45 Convex portion 100 … Blinds O … Opening S … Space

Claims (5)

a support member secured to an opening in a building;
a shielding material whose one end is supported by the supporting member and hangs vertically from the supporting member;
a bottom rail provided at the other end of the shielding material and having a longitudinal notch at its longitudinal end;
a frame fixed to the opening and having a shielding piece that closes a gap between the opening and the shielding material;
and
part of the shielding piece overlaps the shielding material in the longitudinal direction of the support member and is inserted through the notch;
A projection that allows point contact or line contact between the shielding piece and the inner wall surface on at least one surface of the shielding piece or on at least one surface of the front and rear inner wall surfaces of the bottom rail forming the notch. Blinds are formed. A blind according to claim 1,
The convex portion is a shield piece-side convex portion provided on at least the front surface of the front and rear surfaces of the shield piece. A blind according to claim 2,
The bottom rail has an inner wall surface-side convex portion on a surface side facing the shielding piece-side convex portion among the front and rear inner wall surfaces forming the notch portion. A blind according to claim 3,
The bottom rail has two inner wall-surface-side protrusions on both surfaces of the front and rear inner wall surfaces forming the cutout portion, the blinds having two inner-wall-surface-side protrusions on the outer side in the longitudinal direction of the positions of the shielding-one-side protrusions so as to face each other. A blind according to claim 4,
The frame has the shielding piece-side projections at corresponding positions on both front and rear surfaces of the shielding piece.

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