CN110637142A - Roller blind and side cover - Google Patents

Abstract

The invention provides a roller shutter with higher comfortableness and a side cover for a shielding device, which can open or close a shielding piece; the side cover of the present invention is supported as follows: fixedly clamped on a shielding device such as a roller shutter (1) or the like, or clamped on the shielding device such as the roller shutter (1) in a rotatable or sliding manner; a roller shutter (1) is provided with: support members (2a), (2b) for supporting a winding pipe (3) on which the cord fabric (4) can be wound or unwound, and a side cover (10) for covering the support members (2a), (2b), wherein the front-rear width of the side cover (10) is greater than the front-rear width of the support member (2a) or (2 b).

Description

Roller blind and side cover

Technical Field

The present invention relates to a roller blind that ascends or descends a curtain cloth by winding or unwinding the curtain cloth with a winding pipe, and a side cover for a shade device that can open or close a shade.

Background

Conventionally, as a shielding device capable of opening or closing a shielding member, there are a roll blind, a horizontal blind, a roll-up type curtain, a pleated curtain, and the like.

For example, the roller blind is configured as follows. The lighting amount in the room can be adjusted by mounting the curtain cloth on a mount frame attached to a mounting surface such as a ceiling surface or a wall surface via a bracket, supporting the winding pipe via a support member (side frame), attaching the upper edge portion of the curtain cloth to the winding pipe, hanging the curtain cloth down, and winding or unwinding the curtain cloth by the winding pipe.

In a typical roller blind, support members (side frames) are fixed to both ends of a mounting frame, and a cylindrical winding pipe is rotatably supported between the support members on both left and right sides.

Here, a rolling shutter is disclosed, which is configured to: in order to prevent a gap between the mount and the winding pipe, a cover member is disposed in front of the winding pipe (see, for example, patent document 1).

[ Prior art documents ]

[ patent document ]

Patent document 1: japanese patent, Japanese laid-open publication No. 2016-199986

Disclosure of Invention

(problems to be solved by the invention)

As described above, patent document 1 discloses a roller shutter configured to: in order to prevent a gap between the mounting frame and the winding pipe, a cover member is disposed in front of the winding pipe.

However, it is required to provide an excellent shading device with higher comfort.

In view of the above problems, an object of the present invention is to provide: the roller shutter has excellent roller shutter comfort and side cover for the shutter capable of opening or closing the shutter.

(means for solving the problems)

The present inventors have intensively studied in view of the above circumstances and found that there is room for improvement in a side cover, and invented a novel side cover for a shielding device such as a roller shutter.

A rolling shutter according to a first aspect of the present invention is a rolling shutter capable of raising and lowering a curtain, and has the following features.

The rolling shutter is provided with: a support member that supports a winding pipe on which the fabric can be wound or unwound, and a side cover that covers the support member; the side cover has a front-rear width greater than that of the support member.

This makes it possible to form a rolling screen with high comfort and to obtain an effect of preventing light leakage from the side surface.

Further, a rolling shutter according to a second aspect of the present invention is a rolling shutter capable of raising and lowering a curtain, and has the following features.

The rolling shutter is provided with: a support member that supports a winding pipe on which the fabric can be wound or unwound, and a side cover that covers the support member; the side cover is supported by the support member such that: can rotate or slide within a range not colliding with the ceiling surface or the wall surface.

This makes it possible to form a rolling screen with high comfort and to obtain an effect of preventing light leakage from the side surface by being able to conform to the shape of the installation site or by being adjusted to conform to the shape of the installation site.

The roller blinds according to the first and second aspects of the present invention have the following features.

The side cover has: and a shape which protrudes more than the rear edge part of the support member and at least partially covers the gap between the rear part of the roller shutter and the wall surface.

This makes it possible to adapt the shape of the installation site with a simple configuration, and to obtain an effect of preventing light leakage from the side surface.

The roller blinds according to the first and second aspects of the present invention have the following features.

The roller shutter includes a wing piece fixedly or movably provided on a front surface of the roller shutter, and the side cover has a shape covering a side end portion of the wing piece which is fixedly or within a predetermined movable range.

This can prevent light leakage from the side end portions of the fins.

The roller blinds according to the first and second aspects of the present invention have the following features.

The fin is configured to be positioned in front of the winding pipe outside the range of the support member, and the side cover is configured to prevent a gap between the winding pipe and the predetermined support member.

This can prevent light leakage from the side end portions of the fins protruding from the support member.

Further, a roller blind according to a third aspect of the present invention is a roller blind capable of raising and lowering a curtain cloth, and has the following features.

The rolling shutter is provided with: a flap disposed on the front surface of the curtain, a support member that supports a winding pipe on which the curtain can be wound or unwound, and a side cover that covers the support member; the side cover and the wing piece are supported by the supporting component independently: rotate or slide within a range not colliding with the ceiling surface or the wall surface.

This makes it possible to provide a rolling screen with high comfort, to obtain an effect of preventing light leakage from the side, to suppress light leakage from the front, and to improve design.

Further, a side cover according to a first aspect of the present invention is a side cover which has a front-rear width larger than a front-rear width of a housing of a shade device and is provided to the shade device, and has the following features.

The side cover is supported as follows: the shutter can be rotated or at least slid in the front-rear direction with respect to the shutter within a range where the shutter does not collide with the ceiling surface or the wall surface.

This makes it possible to construct a shielding device having a high degree of comfort and to obtain an effect of preventing light leakage from the side surface by adapting to the shape of the installation place.

Further, a side cover according to a second aspect of the present invention is a side cover provided to a shield device, and has the following features.

The side cover has a front-rear width greater than a front-rear width of a frame of the shade device, and is supported such that: the shielding device is fixedly clamped on the shielding device or can be clamped on the shielding device in a rotating or at least sliding mode along the front and back direction.

This makes it possible to construct a shielding device having a higher comfort and to obtain an effect of preventing light leakage from the side surface by adapting to the shape of the installation site or preferably adjusting to the shape of the installation site.

Further, a side cover according to a third aspect of the present invention is a side cover provided to a shield device, and has the following features.

The side cover has a function of limiting the position of a fin disposed on the front surface of the shielding device.

This makes it possible to provide a shielding device having a high degree of comfort, to obtain an effect of preventing light leakage from the front or side, and to improve design and quality by attaching a fin.

The side cover according to the third aspect of the present invention has the following features.

The side cover also has a function of preventing the lateral deviation of the curtain fabric installed on the wing pieces.

This can further improve the design and can maintain the stability of the curtain fabric attached to the flaps.

The side cover according to the first to third aspects of the present invention has the following features.

The side cover has: a shape protruding from the rear of the shielding device and at least partially covering a gap between the rear of the shielding device and the wall surface.

This makes it possible to adapt to the shape of the installation site with a simple structure, and to obtain an effect of preventing light leakage from the side surface.

The side cover according to the first to third aspects of the present invention has the following features.

The side cover has a stepped shape corresponding to the shape of the wall surface.

This makes it possible to more reliably conform to the shape of the installation location, thereby providing an effect of preventing light leakage from the side surface.

(effect of the invention)

According to the present invention, a shielding device having higher comfort can be configured. In particular, the problem of light leakage from the gap between the rear of the shielding device and the wall surface can be suppressed, and the appearance design can be improved.

Drawings

Fig. 1 is a front view of a schematic configuration of a rolling screen as a shielding device according to an embodiment of the present invention.

Fig. 2 is a side view showing a configuration example of a flap in a rolling screen as a shielding device according to an embodiment of the present invention.

Fig. 3A and 3B are side views for explaining the operation of the wing pieces in the roll screen as the shielding device according to the embodiment of the present invention.

Fig. 4A, 4B, and 4C are side views each illustrating an operation example of a vane in a rolling screen as a shielding device according to an embodiment of the present invention.

Fig. 5A, 5B, and 5C are side views each showing a configuration in which a vane is applied to a roller shutter as a shielding device according to another embodiment, and explaining the operation of the vane.

Fig. 6A and 6B are a partial perspective view showing a peripheral structure of a side cover according to a first embodiment of the present invention, and a perspective view showing an assembly position of the side cover.

Fig. 7A and 7B are a partial perspective view showing a peripheral structure of a side cover according to a second embodiment of the present invention, and a perspective view showing an assembly position of the side cover.

Fig. 8A and 8B are side views showing schematic size examples of the side cover in the case where the fins are provided and in the case where the fins are not provided, respectively, with respect to the front-rear width of the side cover according to the present invention provided in consideration of the gap between the rear side of the shielding device and the wall surface when the rolling screen as the shielding device according to the embodiment is provided on the ceiling surface or the wall surface.

Fig. 9A and 9B are a partial perspective view showing a peripheral structure of a side cover according to a third embodiment of the present invention, and a perspective view showing an assembly position of the side cover.

Fig. 10A and 10B are a partial perspective view showing a peripheral structure of a side cover according to a fourth embodiment of the present invention, and a perspective view showing an assembly position of the side cover.

Fig. 11A and 11B are a partial perspective view showing a peripheral structure of a side cover according to a fifth embodiment of the present invention, and a perspective view showing an assembly position of the side cover.

Fig. 12A and 12B are a partial perspective view showing a peripheral structure of a side cover according to a sixth embodiment of the present invention, and a perspective view showing an assembly position of the side cover.

Detailed Description

Hereinafter, a roll screen (roller screen)1 as a shading device according to an embodiment of the present invention will be described with reference to the drawings. In the present specification, the upper side and the lower side of the figure in the front view of the roll screen 1 shown in fig. 1 are defined as the upper side (or upper side) and the lower side (or lower side), respectively, with respect to the hanging direction of the screen 4, the left side of the figure is defined as the left side of the roll screen 1, and the right side of the figure is defined as the right side of the roll screen 1. In the following description, the front side (or the indoor side) of the roll screen 1 shown in fig. 1 is visible in the front view, and the opposite side is the rear side (or the outdoor side).

(integral constitution)

First, a configuration of a roller blind 1 as a shielding device according to an embodiment of the present invention will be described with reference to fig. 1. Fig. 1 is a front view showing a schematic configuration of a roll screen 1 according to the present invention.

In the roll screen 1 shown in fig. 1, support members 2a and 2b are fixed to both ends of a mounting frame 2, shaft members (not shown) are fixed to the support members 2a and 2b, and a cylindrical winding tube 3 is rotatably supported between the support members 2a and 2b by a fixed shaft (not shown) extending from the shaft members. The mounting bracket 2 is fixed to a ceiling surface or a wall surface mounting surface by a bracket (blacket) 6. The support members 2a and 2b are covered with side covers (side covers) 10a and 10b (collectively referred to as "side covers 10"), respectively, whereby the design in particular in a side view can be improved. This will be explained later.

An operation pulley (not shown) is provided at the right end of the winding pipe 3, and an annular operation cord 7 wound around the operation pulley hangs down from the right end of the winding pipe 3. In this example, the operation rope 7 is formed of a ball chain (ball chain), and the surface of the operation pulley around which the ball chain is wound is formed as follows: has an uneven shape conforming to the ball portion of the ball chain. Then, the windup tube 3 can be rotated by operating the operation cord 7. The operation cord 7 may be formed in a string shape, and the surface of the operation pulley around which the operation cord 7 is wound may be formed in a high-friction surface shape.

One end of the fabric 4 is attached to the winding pipe 3, and thereby the fabric 4 is suspended and supported so that the fabric 4 can be wound on the winding pipe 3 or unwound from the winding pipe 3. The other end of the curtain cloth 4 is attached to a weight bar 5 functioning as a balance weight member. Therefore, the curtain cloth 4 is tensioned by the weight of the weight bar 5. In the present embodiment, the curtain cloth 4 hangs down from the outside of the room of the winding pipe 3.

Then, when the operation cord 7 is operated to rotate the take-up tube 3 in the cord winding direction, the weight lever 5 is raised, and when the take-up tube 3 is rotated in the cord unwinding direction, the weight lever 5 is lowered.

In this example, a spring motor (spring motor) for reducing an operation force at the time of winding the fabric 4 is housed in the winding tube 3 on the left end side, and a brake device or the like (not shown) for preventing the fabric 4 from lowering due to its own weight is housed on the right end side.

Here, in the roll screen 1 according to the present invention, the fin (fin)9 is attached to the front side (front side) of the mounting frame 2, whereby light and the like leaking from the gap formed between the winding pipe 3 and the mounting frame 2 can be effectively shielded, and the fin 9 has a structure capable of easily attaching a predetermined curtain fabric 13.

(Structure of wing)

Fig. 2 shows a structure of the tab 9 of one example of the roll screen 1 of the present embodiment. As shown in fig. 2, the shaft portion 91 of the wing piece 9 is engaged in the bearing portion 20 provided on the front surface side of the mount 2, whereby the wing piece 9 is supported rotatably within a predetermined range on the front side (front surface side) of the mount 2.

The fin 9 has a substantially L-shaped cross-sectional shape as a whole, and is rotatably locked to the front side (front side) of the mount 2. The flaps 9 are preferably made of a synthetic resin having high light-shielding properties, aluminum, or the like, but may be made of a transparent or translucent synthetic resin when the curtain fabric 13 is attached as in this example.

Then, the width in the left-right direction of the fin 9 has a length substantially equal to the width in the left-right direction of the mount 2, and more precisely, the width in the left-right direction of the fin 9 is configured to be slightly shorter than the width in the left-right direction of the mount 2, so that, for example, when the fin 9 is formed of synthetic resin, even if the width in the left-right direction changes due to thermal expansion or the like, it can be locked so as to smoothly rotate.

A bearing portion 20 having a substantially C-shaped cross-sectional shape extending in the longitudinal direction is formed below the front surface of the mount 2. The shaft 91 of the vane 9 is engaged with the bearing 20, whereby the vane 9 is rotatably supported on the front surface side of the mounting bracket 2. Support members 2a and 2b are attached to both ends of the mount 2 in the longitudinal direction.

The support members 2a and 2b are formed in the same shape, and notches (not shown) having a size approximately matching the approximately C-shaped cross-sectional shape of the bearing portion 20 of the mount 2 are formed in the support members 2a and 2 b. The recess is provided for the purpose of: after the support members 2a and 2b are fixed to the mounting bracket 2, the shaft portions 91 of the fins 9 are inserted into the bearing portions 20 by sliding in the left-right direction, and are supported. And is constituted such that: the tab 9 can be detached by sliding it, and is not detachable except for this sliding method, and the tab 9 does not fall off the mount 2 even if an external force is applied to the tab 9.

In the roller shutter 1 according to the present embodiment, the support members 2a and 2b are covered with the side covers 10a and 10b, respectively. Therefore, the side covers 10a, 10b have the following functions: the function of restricting the position of the flap 9 by suppressing the sliding of the flap 9 in the left-right direction even when the flap 9 is rotated.

As shown in fig. 2, a bearing portion 20 having a substantially C-shaped cross-sectional shape extending in a longitudinal direction thereof is formed below the front surface of the mount 2. More specifically, the bearing portion 20 is configured to: a bent shaft 20f is formed at the front end of the rotation restricting piece 20a extending upward from the bottom of the mounting bracket 2, and thereby the shaft portion 91 of the flap 9 can be supported. The rotation restricting piece 20a has a function of restricting the downward rotation of the fin 9. Further, a rotation restricting piece 20b that restricts upward rotation of the flap 9 is formed above the bearing portion 20 in the front surface of the mount 2. In the illustrated example, the rotation restricting piece 20a is formed in a substantially C-shape protruding forward from the main body front surface of the mount 2, and the rotation restricting piece 20b is formed in a substantially plate shape protruding forward. Thus, in a state where the shaft portion 91 of the fin 9 is locked in the bearing portion 20, the rotation of the fin 9 in the vertical direction is restricted, and the fin 9 does not fall off from the bearing portion 20 in the rear direction no matter how the fin 9 is rotated.

As a schematic configuration, the fin 9 has a substantially L-shaped cross-sectional shape as a whole by a support plate portion 93 and a shield plate portion 94, wherein the support plate portion 93 has a substantially C-shaped shaft portion 91 at a front end thereof and is bent and protruded from a front side surface of the mounting bracket 2 to a front side by a predetermined length, the shield plate portion 94 extends downward by a predetermined length from the support plate portion 93, and the fin 9 is formed of a member having a toric shape (a single member in this example, but may be a composite member) so as to avoid or mitigate a collision force or a contact sound generated by interference with the curtain cloth 4 (or a weight bar 5 described later).

More specifically, the support plate 93 has a shape bent into a substantially L-shape, and a substantially C-shaped shaft portion 91 is formed at the tip end thereof. Shaft portion 91 is a portion rotatably locked by bending shaft 20f in bearing portion 20. The tip of the shaft 91 is formed in a substantially hook shape bent at an acute angle, and is engaged with the bearing 20 with a space left, so that the vane 9 is not easily detached from the bearing 20, and the degree of freedom of rotation of the vane 9 is increased.

On the other hand, when the shaft portion 91 of the fin 9 is locked in the bearing portion 20 in a state where the rotational freedom degree is increased in this manner, unpleasant noise (contact noise) occurs due to rotational interference between the fin 9 and the rotation restricting piece 20b, and therefore, the shaft portion 91 is formed with a bent portion 92 having a thickness in a rotational range and varying in thickness.

Further, an abutting portion 97 is formed near the root of the shaft portion 91 provided at the tip of the support plate portion 93. The contact portion 97 is a portion that contacts the rotation restricting piece 20b to restrict the upward rotation of the fin 9. This will be described in detail later.

By forming the shaft portion 91 in such a shape, the fin 9 is less likely to fall off from the bearing portion 20, and the rotation of the fin 9 can be allowed while suppressing rattling to reduce noise. This can reduce unpleasant noise (contact noise) generated by the rotational interference between the contact portion 97 and the rotation restricting portion 20b to a negligible level.

Further, a projection 98 is formed below the shaft portion 91 provided at the front end of the support plate portion 93, and the projection 98 projects from the support plate portion 93 in parallel with the shaft portion 91. The protrusion 98 is a portion that restricts downward rotation of the fin 9 at a position where it abuts against the rotation restricting piece 20a of the bearing portion 20 in the mount 2, and will be described in detail later. In particular, the tip of the projection 98 is formed in a shape having a difference in height between projections and recesses as shown in the drawing, and has a function of relaxing a contact sound or a collision force when the rotation restricting piece 20a is brought into contact with the projection. Although the projecting portion 98 of the present embodiment is formed to extend and project in the left-right direction of the support plate portion 93, it may be formed to partially project in the left-right direction of the support plate portion 93.

Then, a disturbance alleviating portion 95 having a curved surface shape is formed at the lower end of the shielding plate portion 94 extending downward from the support plate portion 93. The disturbance alleviating portion 95 has a shape that is warped in a direction away from the fabric 4 (or the weight bar 5), and thus, even when it comes into contact with the fabric 4 (or the weight bar 5 in the embodiment described later), it can alleviate the contact sound or the collision force.

Further, protruding pieces 96a and 96b protruding in a substantially hook-shaped cross-sectional shape are provided at the upper end and the lower end of the front surface of the shielding plate portion 94, and recesses that engage with the upper end and the lower end of the curtain fabric 13 are formed in the protruding pieces 96a and 96b, respectively. In particular, a claw portion 99 located inside the protruding piece 96a is formed at the upper end of the front surface of the shielding plate portion 94, and the protruding piece 96a and the claw portion 99 constitute a clamping member functioning as a curtain fabric pressing piece. On the other hand, the projection piece 96b on the lower end of the front surface of the shielding plate portion 94 is a portion for suppressing the rattling of the curtain fabric 13, and the projection piece 96b is formed with a recess portion which suppresses the rattling and is not in pressure contact.

Fig. 3A and 3B are side views for explaining the operation of the tab 9 in one example of the roll screen 1 according to the present embodiment, and particularly, fig. 3A illustrates the lower rotation restriction of the tab 9, and fig. 3B illustrates the upper rotation restriction of the tab 9.

As shown in fig. 3A, a projection portion 98 is formed below the shaft portion 91 provided at the front end of the support plate portion 93, and the projection portion 98 projects from the support plate portion 93 side by side with the shaft portion 91. The fin 9 is rotatably locked to the bent shaft 20f in the bearing 20 by the shaft 91. The protrusion 98 provided on the tab 9 includes: a function of restricting the downward rotation of the fin 9 at a position abutting against the rotation restricting piece 20a of the bearing portion 20 in the mounting bracket 2. At this time, the flap 9 is limited to, as its basic posture: the longitudinal direction of the shielding plate portion 94 of the tab 9 is substantially perpendicular (vertically downward) to the front-rear direction of the mount 2. In this way, the longitudinal direction of the shielding plate portion 94 of the wing piece 9 is substantially perpendicular (hangs down in the vertical direction) to the front-rear direction of the attachment bracket 2 as the basic posture when the wing piece 9 is attached to the attachment bracket 2 of the roll screen 1, and therefore, the appearance design can be improved.

In addition, as shown in fig. 3B, an abutting portion 97 is formed in the vicinity of the root portion of the shaft portion 91 provided to the vane 9. The contact portion 97 is a portion in which: when the wing piece 9 rotates from this basic posture, the portion where the wing piece 9 rotates upward is regulated by the abutment with the rotation regulating piece 20 b. Thereby, the tab 9 is not in contact with the bracket 6 or the attachment surface thereof. In this way, the workability in mounting the vanes 9 to the mounting frame 2 of the roll screen 1 is not impaired, and the quality thereof can be maintained.

Then, protruding pieces 96a and 96b protruding in a substantially hook-shaped cross-sectional shape are provided at the upper end and the lower end of the front surface of the shielding plate portion 94 of the flap 9, and recesses to be engaged with the upper end and the lower end of the curtain fabric 13 are formed in the protruding pieces 96a and 96b, respectively. In particular, claw portions 99 are formed inside the projecting pieces 96a at the upper end of the front surface of the shielding plate portion 94, and the projecting pieces 96a and the claw portions 99 constitute a clamping member that functions as a curtain fabric pressing member. On the other hand, the protruding piece 96b at the lower end of the front surface of the shielding plate 94 is a portion for suppressing the rattling of the curtain fabric 13, and the protruding piece 96b is formed with a concave portion which suppresses the rattling and is not in pressure contact.

In this way, by configuring the flap 9 to engage only the upper end of the curtain fabric 13, the curtain fabric 13 can be easily attached without being bent.

Fig. 4A, 4B, and 4C are side views each illustrating an operation example of the flap 9 of one example of the roll screen 1 according to the present embodiment.

As shown in fig. 4A, the fin 9 of the present embodiment has a substantially L-shaped cross-sectional shape as a whole by a support plate portion 93 and a shield plate portion 94, wherein the support plate portion 93 is bent and projected by a length a toward the front from the front side surface of the mount 2, and the shield plate portion 94 extends by a length b toward the lower side from the support plate portion 93.

The length b of the shield plate portion 94 is formed as: the length of light leakage from the gap between the mounting frame 2 and the winding tube 3 can be prevented. The length a of the support plate 93 is set to a range that does not adversely affect the operation of the operation cord 7. If the operation is performed such that the operation cord 7 contacts the flap 9 of the present embodiment, the flap 9 rotates, and therefore, no operation load is generated.

Further, as shown in fig. 4B, when the flaps 9 of the present embodiment are applied to the roller blind 1 having the small maximum winding diameter S of the curtain 4, the curtain 4 and the flaps 9 do not come into contact with each other, and thereby the light shielding function can be ensured while maintaining the state in which the longitudinal direction of the shielding plate portion 94 of the flap 9 is substantially perpendicular to the front-rear direction of the mount 2 (the state in which the longitudinal direction hangs down in the vertical direction) as the basic posture.

On the other hand, as shown in fig. 4C, when the flaps 9 of the present embodiment are applied to the roller blind 1 having the large maximum winding diameter S of the curtain 4, even if the curtain 4 and the flaps 9 come into contact, the flaps 9 can be rotated as the winding diameter of the curtain 4 increases, and therefore, the light shielding function thereof can be secured.

Fig. 5A, 5B, and 5C show a configuration in which the flap 9 is applied to the roller shutter 1 according to another embodiment.

In the example shown in fig. 5A, the curtain cloth 4 is hung from the winding tube 3 on the side of the tab 9 in the present embodiment, and the weight bar 5 is positioned between the tab 9 and the winding tube 3. In this case, since the interference alleviating portion 95 having a curved shape is formed at the lower end of the shielding plate portion 94 extending downward from the support plate portion 93 of the fin 9 of the present embodiment, the fin does not interfere with the weight lever 5 and is not caught.

In addition, as shown in fig. 5B, even in a case where the upper limit position of the weight lever 5 is set at a position abutting against the mount 2, the weight lever 5 smoothly moves from the interference mitigating portion 95 in the fin 9 along the shield plate portion 94 to turn the fin 9, and therefore, the operability thereof is not impaired. As described with reference to fig. 3B, the abutting portion 97 is formed near the root of the shaft portion 91 provided in the vane 9, and when the vane 9 rotates from this basic posture, the upward rotation of the vane 9 can be restricted by abutting the abutting portion 97 to the rotation restricting piece 20B. Accordingly, the fin 9 is not in contact with the bracket 6 or the mounting surface thereof, and therefore, the fin 9 is not damaged by collision with the weight lever 5. Therefore, the workability in mounting the vanes 9 to the mounting frame 2 of the roll screen 1 is not impaired, and the quality thereof can be maintained.

As shown in fig. 5C, when it is desired to always maintain the basic posture, which is a state in which the longitudinal direction of the shielding plate portion 94 of the flap 9 is substantially perpendicular to the front-rear direction of the attachment frame 2 (a state in which the flap hangs down in the vertical direction), the upper limit position of the weighting lever 5 can be determined by adjusting the position of the movement restricting member 12 attached to the operation cord 7, causing the operation cord 7 to abut against the operation pulley 8 or the like by the movement restricting member 12, and stopping the rotation of the operation pulley 8. Accordingly, the fin 9 is not in contact with the bracket 6 or the mounting surface thereof, and the fin 9 is not damaged by the collision with the weight lever 5. Further, the basic posture, which is a state in which the longitudinal direction of the shielding plate portion 94 of the fin 9 is substantially perpendicular to the front-rear direction of the mount 2 (a state in which the fin hangs down in the vertical direction), can be constantly maintained, and the design and quality can be maintained.

Therefore, the vanes 9 can be attached to the mounting frame 2 of the various roller blinds 1 without adversely affecting the operability, quality, or design thereof.

The fins 9 can be used for improving light shielding properties or wind shielding properties below the housing, in addition to the roller blind. In addition, by attaching the curtain fabric 13 to the flaps 9, the design at the time of main viewing can be further improved.

However, even if the design of the roller shutter 1 in the front view can be improved by providing the tab 9, the following may occur in the side view: the presence of the tab 9 adversely impairs the design from a side view. Even when the curtain fabric 13 is attached to the flap 9, the curtain fabric may be displaced when physical distribution is performed, when handling is performed, or for reasons of time-lapse, and the appearance design may be impaired.

Therefore, in the roller shutter 1 configured as a shielding device of the present invention, as shown in fig. 1, a side cover 10a is provided on the support member 2a located on the right side of the tab 9, and a side cover 10b is provided on the support member 2b located on the left side of the tab 9. The side covers 10a and 10b are formed in symmetrical shapes and have the same structure, and thus, when there is no need to distinguish them, they are collectively referred to as the side covers 10.

Here, the side cover 10 is configured to: the function of the fin 9 is not impaired, but rather the function is improved, and light leakage from the side surface can be suppressed, and further, the appearance design in the side view can be improved.

Hereinafter, the side cover 10 of each embodiment will be described in order with reference to the drawings.

(side cover of embodiment one)

Fig. 6A and 6B are a partial perspective view showing a peripheral structure of the side cover 10a according to the first embodiment of the present invention, and a perspective view showing an assembly position of the side cover 10 a.

First, as shown in fig. 6A, the side cover 10 of the first embodiment has: the substantially flat plate-like portion 110 covering the side end portion of the fin 9 in the basic posture is connected to the portion 120 covering the entire side surface of the support member 2a (or 2b) (however, a part of the support member 2a (or 2b) may be exposed).

Then, as shown in fig. 6B, only the portion 120 of the side cover 10 of the first embodiment is engaged and fixed to the side surface of the support member 2a, and the portion 110 is not engaged with the tab 9 or the support member 2 a.

Therefore, as understood from fig. 6B, the appearance design at the side view is significantly improved in the appearance shown in fig. 6A compared with the appearance when it is assumed that the side cover 10(10a) is not provided. Further, the problem of light leakage from the gap between the fin 9 and the support member 2a (or 2b) or the winding tube 3 on the side surface can be suppressed.

In addition, the side cover 10 of the first embodiment has the following functions: the rotation of the flap 9 is not hindered, and the position of the flap 9 can be regulated by suppressing the sliding of the flap 9 in the left-right direction when the flap 9 rotates. In addition, the side cover 10 of the first embodiment has the following functions: when the curtain fabric 13 is attached to the flaps 9, the curtain fabric 13 can be prevented from being laterally displaced.

(side cover of example two)

Fig. 7A and 7B are a partial perspective view showing a peripheral structure of the side cover 10a according to the second embodiment of the present invention, and a perspective view showing an assembly position of the side cover 10 a. In addition, the same reference numerals are given to the same constituent elements.

The side cover 10 of the second embodiment shown in fig. 7A and 7B also includes: the substantially flat plate-like portion 110 covering the side end portion of the fin 9 in the basic posture is connected to the portion 120 covering the entire side surface of the support member 2a (or 2b) (however, a part of the support member 2a (or 2b) may be exposed). As shown in fig. 7B, only the portion 120 is engaged with and fixed to the side surface of the support member 2a, and the portion 110 is not engaged with the fin 9 or the support member 2 a.

Here, in the side cover 10 of the second embodiment shown in fig. 7A and 7B, even when the wing piece 9 is rotated at the predetermined rotation angle θ a from the basic posture, the portion 110 can cover the side end portion of the wing piece 9. When the maximum rotation angle from the basic posture is θ, the rotation angle θ a of the fin 9 may be a practical rotation angle of the fin 9 (0 < θ a ≦ θ).

Therefore, the side cover 10 of the second embodiment includes all the advantages of the first embodiment shown in fig. 6A and 6B. In the side cover 10 of the second embodiment, the portion 110 can cover the side end portion of the fin 9 even when the fin 9 is rotated at the predetermined rotation angle θ a from the basic posture, and therefore, the problem of light leakage from the side gap between the fin 9 and the support member 2a (or 2b) or the winding tube 3 can be further suppressed.

However, when the shade device is fixed to a ceiling surface or a wall surface regardless of whether the fins 9 are provided or not in front of the roll screen 1 configured as the shade device, a gap is formed between the rear of the shade device and the wall surface. In particular, in the case of the roll screen 1, since the roll screen is installed in consideration of an increase in the winding diameter of the screen 4, a gap is formed between the rear side of the roll screen 1 and the wall surface. Therefore, it is preferable that: the problem of light leakage from the gap is suppressed, and the design in the side view of the gap is further improved.

That is, as shown in fig. 8A, when the rolling screen 1 as the shielding device of one embodiment is provided on a ceiling surface or a wall surface, not only a problem of covering the side end portions of the fins 9 but also a problem of a gap between the rear of the shielding device and the wall surface are considered, and therefore, it is preferable that: the front-rear width w2 of the frame (in this example, the mounting bracket 2 or the side cover 10) of the shade device is made larger than the front-rear width w1 of the support member 2a (or 2 b).

In addition, as for the shielding device not provided with the fins 9, as shown in fig. 8B, when the rolling screen 1 as the shielding device of an embodiment is provided on a ceiling surface or a wall surface, it is preferable to take into consideration also a gap problem between the rear of the shielding device and the wall surface: the front-rear width w2 of the frame (in this example, the mounting bracket 2 or the side cover 10) of the shade device is made larger than the front-rear width w1 of the support member 2a (or 2 b).

When the sash WF protrudes from the wall W behind the shielding device, it is preferable that: although the shielding device is provided so as to approach the rear edge of the side cover 10 to the wall surface W as much as possible while avoiding the sash WF, when the sash WF cannot be avoided, as shown in fig. 8A and 8B, it is preferable that: the shielding means is provided so that the rear edge portion of the side cover 10 is as close to the window frame WF as possible.

Therefore, in the side cover 10 of each of the following embodiments, as a representative example thereof, the following shape example or configuration example will be described more specifically: when the roll screen 1 having the fins 9 is installed on the ceiling surface or the wall surface, not only the problem of covering the side end portions of the fins 9 but also a shape example or a structure example of a gap between the rear side of the shielding device and the wall surface is considered. In particular, a case where the window frame WF cannot be avoided by providing the roll screen 1 will be described as a typical example.

(side cover of the third embodiment)

Fig. 9A and 9B are a partial perspective view showing a peripheral structure of a side cover 10a according to a third embodiment of the present invention, and a perspective view showing an assembly position of the side cover 10 a.

First, as shown in fig. 9A, the side cover 10 of the third embodiment has: a substantially flat plate-like portion 110 covering the side end portion of the vane 9 in the basic posture, a portion 120 covering the entire side surface of the support member 2a (or 2b) (however, a part of the support member 2a (or 2b) may be exposed), and a portion 130 protruding from the rear edge portion of the support member 2a (or 2b) may be connected to each other.

Then, as shown in fig. 9B, only the portion 120 of the side cover 10 of the third embodiment is engaged with and fixed to the side surface of the support member 2a, the portion 110 is not engaged with the fin 9 or the support member 2a, and further, the portion 130 is not engaged with the support member 2 a.

The roller shutter 1 having the side cover 10 of the third embodiment, as shown in fig. 9A, can be configured as: the rear edge of the side cover 10 is brought as close as possible to the window frame WF of the wall W and does not collide with the ceiling surface and the wall W.

Therefore, as understood from fig. 9B, the appearance design at the side view is significantly improved compared to the appearance when it is assumed that the side cover 10(10a) is not provided, in the appearance shown in fig. 9A. In addition, the problem of light leakage from the side gap between the flap 9 and the support member 2a (or 2b) or the winding tube 3 can be suppressed, and the problem of light leakage from the rear of the roller shutter 1 can also be suppressed.

In addition, the side cover 10 of the third embodiment has the following functions as in the first and second embodiments: the function of restricting the position of the picture 9 by suppressing the sliding of the wing 9 in the left-right direction even when the wing 9 is rotated without obstructing the rotation of the wing 9. In addition, the side cover 10 of the third embodiment has the following functions: when the curtain fabric 13 is attached to the flaps 9, the curtain fabric 13 can be prevented from shifting in the lateral direction, as in the first and second embodiments.

(side cover of example four)

Fig. 10A and 10B are a partial perspective view showing a peripheral structure of a side cover 10A according to a fourth embodiment of the present invention, and a perspective view showing an assembly position of the side cover 10A.

First, as shown in fig. 10A, the side cover 10 of the fourth embodiment has: the substantially flat plate-shaped portion 110 covering the side end portion of the tab 9 in the basic posture, the portion 120 covering the entire side surface of the support member 2a (or 2b) (however, a part of the support member 2a (or 2b) may be exposed), and the portion 130 protruding from the rear edge portion of the support member 2a (or 2b) may be connected to each other, and the portion 130 is formed with a notch 130a for avoiding the sash WF.

As shown in fig. 10B, in the side cover 10 of the fourth embodiment, as in the third embodiment, only the portion 120 is engaged with and fixed to the side surface of the support member 2a, the portion 110 is not engaged with the fin 9 or the support member 2a, and the portion 130 is not engaged with the support member 2 a.

The side cover 10 of the fourth embodiment has a stepped portion shape that conforms to the shape of the wall surface when the sash WF protrudes from the wall surface W. That is, the side cover 10 of the fourth embodiment in the illustrated example can avoid the window frame WF by the notch 130A, and therefore, as shown in fig. 10A, the rolling screen 1 having the side cover 10 of the fourth embodiment can bring the rear edge portion of the side cover 10 closer to the wall surface W than the case of the third embodiment.

Therefore, as understood from fig. 10B, the appearance design at the side view is significantly improved in the appearance shown in fig. 10A compared with the appearance when it is assumed that the side cover 10(10A) is not provided. Further, the problem of light leakage from the side gap between the fin 9 and the support member 2a (or 2b) or the winding tube 3 can be suppressed, and the problem of light leakage from the rear of the roll screen 1 can be further suppressed as compared with the case of the third embodiment.

In addition, the side cover 10 of the fourth embodiment has the following functions, as in the first to third embodiments: the rotation of the flap 9 is not hindered, and the position of the flap 9 can be regulated by suppressing the sliding of the flap 9 in the left-right direction even when the flap 9 rotates. In addition, the side cover 10 of the fourth embodiment has the following functions: when the curtain fabric 13 is attached to the flaps 9, the curtain fabric 13 can be prevented from being laterally displaced as in the first to third embodiments.

(side cover of the fifth embodiment)

Fig. 11A and 11B are a partial perspective view showing a peripheral structure of the side cover 10a according to the fifth embodiment of the present invention, and a perspective view showing an assembly position of the side cover 10 a.

First, as shown in fig. 11A, the side cover 10 of the fifth embodiment has: the side cover 10 of the fifth embodiment is configured to be able to move relative to the support member 2a (or 2b) by sliding, while having a shape in which a substantially flat plate-like portion 110 covering the side end portion of the fin 9 in the basic posture, a portion 120 covering the entire side surface of the support member 2a (or 2b) (however, a part of the support member 2a (or 2b) may be exposed), and a portion 130 protruding from the rear edge portion of the support member 2a (or 2 b).

In this example, as shown in fig. 11B, in the portion 120 of the side cover 10 of the fifth embodiment, a slide piece 121 is formed so as to protrude from the surface facing the side surface of the support member 2a (or 2B), and a circular shaft 121a is formed at the tip end of the slide piece 121.

On the other hand, a slide groove (slide groove)21 extending in the front-rear direction is formed in the side surface of the support member 2a (or 2b), and the slide piece 121 of the side cover 10 according to the fifth embodiment is inserted into the slide groove 21. The side cover 10 of the fifth embodiment can be relatively moved in the front-rear direction by a sliding manner without coming off the side surface of the support member 2a (or 2b) by elastically deforming the circular shaft 121a at the front end of the slide piece 121 and inserting the same into the slide groove 21.

The slide groove 21 and the slide piece 121 are not limited to the case of one set, and may be constituted by a plurality of sets of the slide groove 21 and the slide piece 121.

Therefore, in the side cover 10 of the fifth embodiment, the slide piece 121 of the portion 120 is engaged with and supported by the side surface of the support member 2a so as to be relatively movable, the portion 110 is not engaged with the fin 9 or the support member 2a, and the portion 130 is not engaged with the support member 2 a.

Thus, the roller blind 1 having the side cover 10 according to the fifth embodiment can increase the degree of freedom in installation thereof by sliding the side cover 10 along the window frame WF as shown in fig. 11A, and can bring the rear edge portion of the side cover 10 close to the wall surface W in an adjustable manner. Further, the degree of freedom of the overall shape of the side cover 10 of the fifth embodiment can be improved by allowing the side cover 10 to slide.

Therefore, as understood from fig. 11B, the appearance shown in fig. 11A is significantly improved in design property in a side view as compared with the appearance when it is assumed that the side cover 10(10a) is not provided. In addition, the problem of light leakage from the gap between the fin 9 and the support member 2a (or 2b) or the winding tube 3 on the side surface can be suppressed, and the problem of light leakage from the rear of the roller shutter 1 can be further suppressed.

In addition, the side cover 10 of the fifth embodiment has the following functions, as in the first to fourth embodiments: the rotation of the flap 9 is not hindered, and the position of the flap 9 can be regulated by suppressing the sliding of the flap 9 in the left-right direction even when the flap 9 rotates. In addition, the side cover 10 of the fifth embodiment has the following functions: when the curtain fabric 13 is attached to the flaps 9, the curtain fabric 13 can be prevented from being laterally displaced as in the first to fourth embodiments.

Here, although the example shown in fig. 11A and 11B has been described as an example in which the side cover 10 is provided so as to be slidable relative to the support member 2a (or 2B) in the front-rear direction, the side cover 10 may be slid at least in the front-rear direction, and may be configured to allow for sliding in the front-rear direction or in the up-down oblique direction in the back-up-down direction. The side cover 10 may be configured to slide in a curved shape, not limited to a case where it slides linearly.

(side cover of the sixth embodiment)

Fig. 12A and 12B are a partial perspective view showing a peripheral structure of a side cover 10a according to a sixth embodiment of the present invention, and a perspective view showing an assembly position of the side cover 10a, respectively.

First, as shown in fig. 12A, the side cover 10 of the sixth embodiment has: the side cover 10 of the sixth embodiment is formed in such a shape that a substantially flat plate-like portion 110 covering the side end portion of the fin 9 in the basic posture, a portion 120 covering the entire side surface of the support member 2a (or 2b) (however, a part of the support member 2a (or 2b) may be exposed), and a portion 130 protruding from the rear edge portion of the support member 2a (or 2b) are connected to each other, and the side cover 10 can be rotated relative to the support member 2a (or 2 b).

In this example, as shown in fig. 12B, a cylindrical support shaft 122 is formed to protrude from a surface of the portion 120 of the side cover 10 of the sixth embodiment, which surface faces the side surface of the support member 2a (or 2B), and a circular shaft 122a is formed at the tip end of the support shaft 122.

On the other hand, a circular hole-shaped shaft hole 22 is formed in the side surface of the support member 2a (or 2b), and the support shaft 122 of the side cover 10 of the sixth embodiment is inserted into the shaft hole 22. The side cover 10 of the sixth embodiment is inserted into the shaft hole 22 after elastically deforming the circular shaft 122a at the front end of the support shaft 122, and is rotatable relative to the support member 2a (or 2b) without coming off the side surface of the support member 2a (or 2 b).

In addition, the present invention is not limited to the case where only the shaft hole 22 and the support shaft 122 are provided, and the following configuration may be adopted: a guide groove (not shown) for restricting a rotation range is further provided on a side surface of the support member 2a (or 2b), and a guide shaft (not shown) engaged with the guide groove is provided in parallel to the side cover 10 in the same shape as the support shaft 122. Further, the configuration may be such that: the side surface of the support member 2a (or 2b) is provided with a plurality of shaft holes 22, whereby the position of the side cover 10 to be pivotally supported can be adjusted.

Therefore, in the side cover 10 according to the sixth embodiment, the support shaft 122 of the portion 120 is relatively rotatably engaged with and supported by the support member 2a, the portion 110 is not engaged with the fin 9 or the support member 2a, and the portion 130 is not engaged with the support member 2 a.

Thus, the roller blind 1 having the side cover 10 of the sixth embodiment can increase the degree of freedom in the arrangement thereof by relatively rotating the side cover 10 along the window frame WF as shown in fig. 12A, whereby the rear edge portion of the side cover 10 can be brought closer to the wall surface W. In addition, the degree of freedom of the overall shape of the side cover 10 of the sixth embodiment can be improved by making the side cover 10 slidable.

Therefore, as understood from fig. 12B, the appearance design at the side view is significantly improved compared to the appearance when it is assumed that the side cover 10(10a) is not provided, in the appearance shown in fig. 12A. In addition, the problem of light leakage from the gap between the fin 9 and the support member 2a (or 2b) or the winding tube 3 on the side surface can be suppressed, and the problem of light leakage from the rear of the roller shutter 1 can be further suppressed.

In addition, the side cover 10 of the sixth embodiment has the following functions, as in the first to fifth embodiments: the rotation of the flap 9 is not hindered, and the position of the flap 9 can be regulated by suppressing the sliding of the flap 9 in the left-right direction even when the flap 9 rotates. In addition, the side cover 10 of the sixth embodiment has the following functions: when the curtain fabric 13 is attached to the flaps 9, the curtain fabric 13 can be prevented from being laterally displaced as in the first to fifth embodiments.

Here, in the example shown in fig. 12A and 12B, the description has been given by taking as an example a case where the support shaft 122 of the side cover 10 is supported by the circular hole-shaped shaft hole 22 of the support member 2A (or 2B) and is relatively rotated, but the shaft hole 22 of the support member 2A (or 2B) may not be formed in a circular hole shape, and the following configuration is possible: for example, the shaft hole 22 of the support member 2A (or 2b) is formed as a wavy shaft hole extending in the front-rear direction, whereby the relative rotation as shown in fig. 12A and the relative movement in the front-rear direction as shown in fig. 11A of the foregoing fifth embodiment can be simultaneously achieved.

In the side covers 10 of the third to sixth embodiments, the case where the fin 9 is provided (see fig. 8A) was described as a typical example, but in the case where the fin 9 is not provided (see fig. 8B), the same configuration as that in the case where the formation portion 110 is not necessarily required may be employed.

The present invention has been described above by referring to specific embodiments and examples, but the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the technical spirit thereof. In particular, the side cover 10 of each embodiment may be formed not only as long as it substantially covers the side end portion of the tab 9: when the fins 9 are in the basic posture, the shape of completely covering the support member 2a (2b) may be formed in a shape in which a part of the lower side of the support member 2a (or 2b) is exposed, and in this case, the improvement of the appearance design, the suppression of light leakage, and the functionality of the fins 9 can be ensured.

In addition, the side covers 10 of the respective embodiments may be combined as appropriate to form a new embodiment. For example, the following may be configured: a new embodiment of the notch 130A as shown in fig. 10A, 10B is provided on the side cover 10 of the fifth or sixth embodiment.

The shape, structure, and locking method of the shaft portion 91 of the tab 9 according to the side cover 10 of each embodiment are merely illustrative, and for example, the shaft portion 91 of the tab 9 may be formed of a circular shaft or the like, and in the case of a roll screen, for example, the configuration may be such that: the shaft portions 91 of the fins 9 are supported not by the mount frame 2 as a housing but by the support members 2a, 2 b.

The fins 9 may be configured to be rotatable with respect to the housing, or may be configured to be fixed so as not to be rotatable. Further, the fins 9 are not limited to the form of rotating with respect to the housing, and may be formed in any other movable form such as sliding with respect to the housing.

The side cover 10 according to the present invention is not limited to being applied to a roll blind, and may be applied to a shielding device such as a horizontal blind, a roll blind, or a pleated curtain (side end portion thereof when the fin 9 is provided).

(availability in industry)

According to the present invention, light leakage from the side surface can be suppressed, and the design during testing can be improved, and therefore, the present invention can be used for a shielding device such as a roller shutter.

(symbol description)

1: roller shutter, 2: mounting frame, 2a, 2 b: support member, 3: winding tube, 4: cord fabric, 5: weight bar, 9: fin, 10: side cover, 20: bearing portions, 20a, 20 b: rotation restricting piece, 21: sliding groove of support member, 22: shaft hole of support member, 91: shaft portion of vane, 92: bend of tab, 93: flap support plate portion, 94: blade shielding plate portion, 95: interference mitigation section of fin, 110, 120, 130: position of side cover, 121: side cover slide, 122: support shaft of side cover

Claims (12)

1. A rolling blind capable of raising or lowering a curtain cloth,

the roller shutter is characterized in that it is,

the disclosed device is provided with:

a support member that supports a winding tube on which the curtain fabric can be wound or unwound,

a side cover covering the support member;

the side cover has a front-rear width greater than a front-rear width of the support member.

2. A rolling blind capable of raising or lowering a curtain cloth,

the roller shutter is characterized in that it is,

the disclosed device is provided with:

a support member that supports a winding tube on which the curtain fabric can be wound or unwound,

a side cover covering the support member;

the side cover is supported by the support member such that: can rotate or slide within a range where it does not collide with the ceiling surface or the wall surface.

3. The roller shutter according to claim 1 or 2,

the side cover has: a shape which is more protruded than a rear edge portion of the support member and at least partially covers a gap between a rear side of the roll screen and a wall surface.

4. The roller shutter according to any one of claims 1 to 3,

the roller blind is provided with a flap which is fixedly or movably arranged on the front face of the roller blind,

the side cover has a shape that covers the side end of the fixed or predetermined movable range of the fin.

5. The roller shutter according to claim 4,

the fin is configured to be located at a position forward of the winding tube outside the range of the support member,

the side cover is configured to prevent a gap between the winding tube and the predetermined support member.

6. A rolling blind capable of raising or lowering a curtain cloth,

the roller shutter is characterized in that it is,

the disclosed device is provided with:

a wing disposed on a front surface of the roller shutter,

a support member that supports a winding tube on which the curtain fabric can be wound or unwound,

a side cover covering the support member;

the side cover is supported by the support member independently of the flap: can rotate or slide within a range where it does not collide with the ceiling surface or the wall surface.

7. A side cover is provided on a shielding device,

the side cover is characterized in that,

the side cover has a front-rear width greater than a front-rear width of a frame of the shade device, and is supported to: to the extent that no collision with the ceiling surface or the wall surface occurs, the shutter device is rotated or at least slid in the front-rear direction.

8. A side cover is provided on a shielding device,

the side cover is characterized in that,

the side cover has a front-rear width greater than a front-rear width of a frame of the shade device, and is supported to: the shutter is fixedly engaged with the shutter, or is engaged with the shutter in a manner of being rotatable or slidable at least in the front-rear direction.

9. A side cover is provided on a shielding device,

the side cover is characterized in that,

the side cover has a function of restricting the position of a tab disposed on the front surface of the shade device.

10. The side cover of claim 9,

the side covers also function to prevent lateral shifting of the shade fabric mounted to the flaps.

11. The side cover according to any one of claims 7 to 10,

the side cover has: a shape protruding from the rear of the shielding device and at least partially covering a gap between the rear of the shielding device and the wall surface.

12. The side cover of claim 11,

the side cover has a stepped shape adapted to the shape of the wall surface.