JP2000160961A - Sheet shutter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet shutter device capable of detaching a sheet from a guide member in the case of large external force being applied to the sheet and capable of returning the sheet detached from the guide member, to the guide member. SOLUTION: A contact belt member 2 is fitted to the end of a sheet 1 and elevated being guided by a guide member 3. A deformable part 2a of the contact belt member 2 is elastically deformable, and when large external force is applied to the sheet 1, the contact belt member 2 is detached from the guide member 3. When the detached sheet 1 is wound, the contact belt member 2 is pushed into the guide member 3 by an unillustrated keep member engaged with a rear part 2d of the contact belt member 2, so that the contact belt member 2 can be returned to the guide member 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat shutter device using a flexible sheet.

[0002]

2. Description of the Related Art As shutter devices used at entrances and exits of buildings, there are known a shutter device using a metal sheet and a sheet shutter device using a flexible sheet. The sheet shutter device is similar to a shutter device using a metal slat in that it is raised and lowered by being guided by guide rails provided on both sides of a building opening or the like, but the sheet is flexible. Therefore, when the shutter surface receives wind pressure or the like, there is a problem that the shutter surface easily comes off the guide rail. In order to avoid this problem, bulging edges are provided on both sides of the sheet, and the bulging edges are guided in the guide rails. The edge does not come off the guide rail.

In the shutter device described in Japanese Patent Publication No. 6-86788, the shutter device may be damaged when an extremely large external force is applied, such as when it is subjected to a storm or a car or the like comes into contact with a seat. In order to prevent this, the guideway guiding the substantially continuous flexible bulging edge of the shutter expands when the shutter is subjected to a force in the direction of removing the bulging edge from the guideway. A variable opposing edge for removing the protruding edge from the guideway, and an access passage without a variable opposing edge for returning the bulging edge off the guideway to the guideway as the shutter is rolled up;
And a portion in which the deformation of the deformable facing edge is restricted so that the bulging edge does not come off on the winding side of the shutter from the access passage.

[0004] In the shutter device described in the above publication, in the guide path in which the bulging edge is disengaged from the deformable opposing edge, a portion of the bulging edge that engages with the deformable opposing edge, and a shutter. In the portion where the deformation of the deformable facing edge is limited so that the bulging edge does not come off on the winding side of the bulge, the portion of the bulging edge that engages with the deformable facing edge is the same portion, The facing edge and the bulging edge must be easily separated by a predetermined external force at the deformable facing edge of one guideway, and the deformable facing edge of the other guideway. In such a case, it is necessary to prevent the bulging edge from coming off even when an external force is applied, and there is a problem that the degree of freedom in designing the shapes of the deformable facing edge and the bulging edge is small. In addition, since an access passage without a deformable facing edge is provided for returning a detached sheet, there is a problem that the bulging edge passes through a part that is not guided during normal ascent and descent.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and enables a seat to be detached from a guide member when a large external force is applied to a seat of a seat shutter device. It is another object of the present invention to provide a seat shutter device having a new structure capable of returning a sheet detached from the guide member to the guide member.

[0006]

According to a first aspect of the present invention, in a seat shutter device, a second elastically deformable first guided portion having a convex portion is substantially not deformed.
A contact belt member having a guided portion, and a sheet having the contact belt member attached to both sides,
A guide member for guiding the contact belt member, wherein the guide member guides the first guided portion in a state where the first guided portion is not deformed, and guides the first guided portion; The first guided portion is deformed when a pulling force equal to or greater than a predetermined value is applied to the belt member, the first region is separated from the guide member, and the first region is positioned above the first region and separated. An engaging means is provided for engaging the second guided portion of the contact belt member, and has a second region for pushing the first guided member into the guide member by winding up the contact belt member. It is characterized by the following.

According to a second aspect of the present invention, in the seat shutter device according to the first aspect, the first guided portion includes two fork-shaped flexible arms;
It has a convex part formed in the outside of each of the two arms.

According to a third aspect of the present invention, in the seat shutter device according to the first or second aspect, the guide member has tapered portions on both sides of the insertion opening at least near the insertion position of the detached contact belt member. It is characterized by being formed.

According to a fourth aspect of the present invention, in the seat shutter device according to any one of the first to third aspects, as the engagement means, a holding portion integrally formed with the guide member in a second area. Is provided.

According to a fifth aspect of the present invention, in the seat shutter device according to any one of the first to third aspects, the guide member has the same sectional shape over the first and second regions. As an engagement means, a holding member is provided near the guide member in the second area.

According to a sixth aspect of the present invention, in the seat shutter device according to any one of the first to fifth aspects, the first guided portion attached below the seat is located above the seat. It is characterized in that it is configured to be more easily detached than the one attached to the

[0012]

1 to 7 illustrate a first embodiment of a seat shutter device according to the present invention. FIG. 1 illustrates a related structure of a contact belt member and a guide member. FIG. 2, FIG. 2 is an explanatory view of the guide member, FIG. 3 is a cross-sectional view of each part of the guide member, FIG. 4 is a cross-sectional view taken along line EE of FIG. 2, and FIG. FIGS. 6 and 7 are explanatory views of a state in which the detached contact belt member returns to the guide member.
In the drawing, 1 is a sheet, 2 is a contact belt member, 2a is a deformed portion, 2b is a base portion, 2c is a first guided portion, 2d is a second guided portion, 2e is a groove, 3 is a guide member, 3a Is an engaging portion, 3b is a tapered portion, 3c is a holding portion, 3d is an inclined portion, 4 is a fixing rod, 5 is a winding thickness adjusting member, 6 is a supporting member, 7 is a guide fixing member, 8 is a bolt, and 9 is compression. Spring,
10 is a sprocket wheel, 10a is an auxiliary wheel, 1
0b is a regulating plate, 11 is a guide member, 11a is a regulating portion, 12
Is a guide rail, and 13 is a bracket.

First, the contact belt member and the guide member will be described with reference to FIG. 1A is a sectional view taken along line BB of FIG. 2A, FIG. 1B is a plan view of a contact belt member,
FIG. 1C is a side view of the contact belt member of FIG. 1B as viewed from the right side of the figure. A contact belt member 2 is attached to a side portion of the sheet 1 constituting the shutter curtain. The contact belt member 2 may be formed as a single member over substantially the entire side portion of the sheet 1. However, in this embodiment, a plurality of contact belt members 2 formed short are used, and the contact belt member 2 is substantially formed. They were provided so as to be continuously arranged. The interval between the contact belt members needs to be at least an interval that allows the sheet to bend in the passage path of the sheet 1. Of course, the interval may be increased appropriately, but if the interval is too wide,
There is a problem that a state in which the end of the seat cannot be guided sufficiently occurs or a force applied to one contact belt member 2 increases.

The contact belt member 2 is made of an elastic resin, for example, high-density polyethylene or the like.
As shown in FIG. 1 (B), it comprises a deformed portion 2a and a base 2b. The deformed portion 2a has a shape in which two arm members are formed in a fork shape, and a shoulder portion protruding outside the two arm members constitutes a first guided portion 2c. Also,
The shoulder of the base 2b forms a second guided portion 2d. A groove 2e for inserting a sheet is provided in the base 2b. The end of the sort is bent and inserted from the groove 2e, and the fixing belt 4 is inserted to attach the contact belt member 2 to the sheet 1. You may fix with a screw screw.

A winding thickness adjusting member 5 is attached to both sides near the end of the sheet 1 to which the contact belt member 2 is attached. Since the thickness of the contact belt member 2 is larger than the thickness of the sheet 1, when the sheet 1 to which the contact belt member 2 is attached is wound up, the contact belt members 2 of the upper and lower sheets directly overlap each other, and are wound up. Can not be smooth. By making the thickness of the winding thickness adjusting member 5 equal to or larger than the thickness of the contact belt member 2, winding can be facilitated. The winding thickness adjusting member 5 is preferably made of a material having elasticity such as natural rubber or synthetic rubber.

The guide members 3 are disposed on both sides of the opening where the sheet rises and falls. In the figure, the guide member 3 is
Although a partial cross section is shown, as will be described later, the cross section of the guide member 3 may have a different cross section in a part of a region where the contact belt member 2 is guided.

The mounting structure of the guide member 3 will be described. In this embodiment, the guide member 3 is elastically attached to the support member 6. Support member 6
Is fixed to a building frame, for example. A guide fixing member 7 for attaching the guide member 3 is screwed to a tip of a bolt 8, and a compression spring 9 is provided between the head of the bolt 8 and the support member 6. The bolt 8 is loosely penetrated through the support member 6, so that the guide member 3 can swing with respect to the support member 6. Since the guide member 3 is long, the bolts 8 are provided at appropriate intervals in the longitudinal direction of the guide member 3.

The shape of the contact belt member 2 is shown in FIG.
As shown in FIG. 1C, which is a view as seen from the right side of FIG. 1B, the outer shape of the deformed portion 2a is rounded on both sides.
This is to make it easier to insert the detached contact belt member 2 into the guide member, as described later. The upper and lower surfaces of the deformed portion 2a are slightly inclined, but this prevents the deformed portion 2a from hitting the adjacent deformed portion when the sheet is bent, as described in FIG. That's why. Therefore, depending on the interval between the contact belt members 2, the outer shape of the deformed portion 2a can be formed in a square shape or a shape close thereto, and therefore, the shape of the deformed portion 2a is not limited to the shape shown in the drawing. It is clear. In addition, the upper and lower surfaces of the base 2b are slightly rounded, but by adopting this shape, the area where the base 2b contacts the guide member 3 can be reduced, and the frictional force when ascending and descending is reduced. be able to. However, the shape of the base 2b is not limited to this shape.

The guide member and the winding mechanism will be described with reference to FIG. FIG. 2A is a front view, and FIG.
FIG. 3A is a cross-sectional view of the guide member 3 taken along line AA in FIG.
FIG. 2 is for describing the structure of each part, and the size of each part is not shown in proportion. Also,
Only a part of the contact belt member 2 is shown. The lower portion of the guide member 3 is configured so that the contact belt member 2 is separated from the guide member 3 when an external force equal to or more than a predetermined value is applied to the sheet. The guide member 3 is formed above the portion so that the detached contact belt member 2 can be returned to the guide member 3. The material of the guide member 3 is a non-deformable material such as a synthetic resin or a metal.

The structure of each part of the guide member 3 will be described with reference to FIG. In FIG. 3, illustration of the support member 6, the bolt 8, and the like is omitted.

FIG. 3A is a sectional view taken along line BB of FIG. The portion having this cross-sectional shape is a portion where the contact belt member 2 is configured to be detachable from the guide member 3. In this portion, the first guided portion 2c of the contact belt member 2 is raised and lowered while being guided by engaging with the engaging portion 3a of the guide member 3, but a large force is applied to the seat 1. Then, the contact belt member 2 is disengaged from the guide member 3 through the engagement portion, which will be described later.

FIG. 3B is a sectional view taken along line CC of FIG. The section having this cross-sectional shape serves as an introduction section for easily returning the detached contact belt member 2 to the guide member 3, and has a tapered portion 3b formed on the front side.

FIG. 3C is a sectional view taken along line DD of FIG. The portion having this cross-sectional shape is a portion where the detached contact belt member 2 is pushed back into the guide member 3. Although a method of returning the contact belt member 2 will be described later, the pressing portion 3 that engages with the second guided portion 2d of the contact belt member 2
c is provided integrally with the guide member 3. Of course, the pressing portion 3c may be provided separately. As shown in FIG. 2B, an inclined portion 3d is provided at a lower end of the holding portion 3c.
Are formed.

In this embodiment, a sprocket wheel 10 is used as a winding mechanism. Sprocket wheel 1
Numeral 0 is provided so as to mesh with the base 2b of the contact belt member 2, and the forward / reverse rotation of the contact belt member 2 raises / lowers the sheet. The rolled sheet 1 is a guide rail 1
2 and is wound on a winding drum (not shown). For example, the film may be wound in a substantially horizontal direction along the ceiling without being wound on the winding drum. In the case of moving in the horizontal direction without winding on the winding drum, the winding thickness adjusting member 5 may not be provided.

FIG. 4 is a sectional view taken along line EE of FIG. As can be seen with reference to FIG. 2, the base of the contact belt member 2 comprises a sprocket wheel 10 and a guide member 11.
It is moved as if sandwiched between. The guide member 11 is attached to a bracket 13. Auxiliary wheel 10
“a” is provided integrally with the sprocket wheel 10 and is provided so as to support the deformed portion of the contact belt member 2, but may be omitted. Also, the regulating plate 10b
Is attached to the side surface of the sprocket wheel 10 and is provided so as to suppress the second guided portion of the contact belt member 2. The guide member 11 is also provided with a similar restricting portion 11a, but may be omitted. The regulating plate 10b and the regulating portion 11a are shown in FIG.
The illustration is omitted.

FIG. 5 is an explanatory view of a process in which the contact belt member 2 is separated from the guide member 3. FIG. 5 (A)
Is the normal ascending / descending position. When an external force equal to or more than a predetermined value is applied to the sheet 1, the deformed portion 2a of the contact belt member 2 is deformed and starts to come off from the engaging portion 3a of the guide member 3, as shown in FIG. As shown in FIG. 5C, the contact belt member 2 is separated from the guide member 3.

FIG. 6 shows the contact belt member 2 detached.
FIG. 7 is an explanatory diagram of a process of inserting a guide member into a guide member. FIG.
FIG. 2 is a sectional view of the guide portion 3 at the time of insertion, and FIG.
It is a figure corresponding to the AA line sectional view of (A). The detached contact belt member 2 is inserted into the guide member 3 by the holding portion 3c by being pulled up. The contact belt member 2 is provided with a tapered portion 3b at the opening of the guide member 3,
As shown in FIG. 6A, the deformed portion 2a is
Easy to insert into As shown in FIG. 6B, the contact belt member 2 has a second guided portion 2d.
Is pressed by the inclined portion 3b, and a part of the deformed portion 2a is inserted into the guide member 3. In the contact belt member 2, the second guided portion 2 d is pressed by the pressing portion 3 c, and is completely inserted into the guide member 3. Therefore, when the sprocket wheel 10 described with reference to FIG. 2A is driven to wind up the contact belt member 2, the detached contact belt member 2 is sequentially pressed by the second guided portion 2d of the guide member 3. The contact belt member 2 that has been removed and inserted into the guide member 3 along the inclined portion 3d of the portion 3c so that the sheet is completely wound up can be inserted into the guide member 3.

8 to 11 are views for explaining a second embodiment of the seat shutter device of the present invention. FIG. 8 is an explanatory view of a guide member, and FIG. 9 is a diagram showing a contact belt member and a guide member. FIG. 10 is an explanatory diagram of a related configuration of FIG.
FIG. 11 is an explanatory view of a state where the detached contact belt member returns to the guide member. In the figure, FIG.
7 are denoted by the same reference numerals, and description thereof will be omitted. 14 is a pressing member, and 15 is a supporting member.

In this embodiment, as shown in FIG.
A tapered portion 3b is formed over the entire guide member 3, and the cross-sectional shape is the same in any portion. Then, in order to hold down the detached contact belt member 2 and insert it into the guide member 3, a holding member 14 supported by the support member 15 is separately provided. The holding member 14 is preferably formed of a metal, for example, stainless steel, but may be formed of a synthetic resin as long as the material has high wear resistance. The surface may be processed with Teflon.

FIG. 9A is a sectional view taken along the line BB of FIG. 8. The contact belt member 2 is the same as the contact belt member 2 described in FIG.
This is the same as the guide member 3 described in (B). FIG.
(B) is a sectional view taken along line CC of FIG. 8. Guide member 3
Is the same as FIG. As described above, the holding member 14 supported by the support member 15 is provided. In FIG. 9 (B), the illustration of the support member 6, the bolt 8, the compression spring 9, and the like is omitted, but in this part, the guide fixing member 7 is attached to an appropriate support member without necessarily providing them. You may.

FIG. 10 is a sectional view taken along line EE of FIG.
In this embodiment, the sprocket wheel 10 is not provided with the regulating plate 10b. Also, the guide member 11 is not provided with the restricting portion 11a. Of course, a configuration similar to that of FIG. 4 may be employed to provide the restriction plate and the restriction fitting.

FIG. 11 is an explanatory view of the process of inserting the detached contact belt member 2 into the guide member 3. When the contact belt member 2 is raised, the contact belt member 2 is pushed into the guide member 3 by the pressing member 14 in the same manner as described with reference to FIG.

FIGS. 12 to 14 are views for explaining a third embodiment of the seat shutter device of the present invention.
12 is an explanatory view of a guide member, FIG. 13 is a cross-sectional view of each part of the guide member, and FIG. 14 is a longitudinal cross-sectional view of the guide member.
It shows two different forms. In the figures, FIGS.
The same reference numerals are given to the same portions as 1 and the description is omitted.
2f is a convex portion, 3e is a corner drop portion, 16 is a sheet fixing screw, 17 is a minimum winding diameter, and 18 is a maximum winding diameter.

In this embodiment, as shown in FIG. 12, two guide members 3 having different structures are used.
The pressing member 14 described in the second embodiment was used.
FIG. 13A shows a cross-sectional view taken along the line BB of FIG. 12, and FIG. 13B shows a cross-sectional view taken along the line CC of FIG. In FIG. 13B, illustration of the support member 6, the bolt 8, the compression spring 9, and the like is omitted, but in this part, the guide fixing member 7 is attached to an appropriate support member without necessarily providing them. You may do so.

The guide member 3 shown in FIG.
A tapered portion 3b is formed to facilitate insertion of the detached contact belt member 2 into the guide member 3.
The angle of the tapered portion 3b is slightly steeper than that of the tapered portion 3b described in the first and second embodiments, and the tapered portion 3b has a curved surface. However, it may be the same as the tapered portion 3b described in the first and second embodiments. FIG. 13 (B)
Is formed with a pressing portion 3c. The pressing portion 3c is the same as that described in the first embodiment. However, as shown in FIG. 12, a corner drop portion 3e is provided to make it easier to pass through the convex portion 2f of the contact belt member 2.

As shown in FIG. 14A, the pressing member 14 can be arranged close to the guide member 3 as shown in FIG. In this arrangement, when the detached contact belt member 2 is inserted into the guide member 3, the contact belt member 2 is almost completely inserted at the holding member 14, as described with reference to FIG.

As shown in FIG. 14B, the holding member 1
A configuration in which the guide member 4 is disposed apart from the guide member 3 can also be adopted. In this arrangement, the detached contact belt member 2 is inserted into the guide member 3 by the pressing member 14 and the inclined portion 3d of the pressing portion 3c, and is inserted along the path described with reference to FIG. The use of a metal material for the holding member 14 is advantageous in terms of abrasion resistance when the guide member 3 is made of a synthetic resin.

FIG. 15 shows an example in which the sheet is wound up with the guide rail directed obliquely upward. Maximum winding diameter 18
In (2), winding is performed with less bending from the guide rail 12. In the case of the minimum winding diameter 17, the contact belt member 2 is bent downward, but there is no problem since the contact belt member 2 is formed to be bent along the sprocket wheel 10.

In the above-described embodiment, the engaging portion 3a of the guide member 3 has the same size and shape over the entire area up and down. However, in the portion where the detached contact belt member 2 is inserted, the insertion path may be slightly widened so that the contact belt member 2 is easily inserted and the engagement force of the engagement portion 3a is weakened.

The wind pressure applied to the sheet 1 by the wind varies depending on the height from the ground, and the higher the height, the greater the wind pressure. The provisions of the Enforcement Order of the Building Standards Law, Hereinafter 16m, q = 60 × h ^1/2 However, q: Wind Pressure (kgf / m ²⁾ h: resist wind pressure height from the ground (m) Strength As can be seen from this equation, the wind pressure q increases in proportion to the height h from the ground to the half power. For example, at a height of 4 m, it is twice as large as the wind pressure received 1 m above the ground. Therefore,
The seat shutter also receives this tendency of wind pressure.

In the seat shutter of the present invention, when a car or a trolley accidentally enters the seat shutter, the force required for the contact belt member 2 to separate from the guide rails, in consideration of protection of the car and forklift, etc., The smaller the detachment force, the better. However, it is easily detached by wind pressure.

As described above, in consideration of the characteristic that the wind pressure increases as the height from the ground increases, the detachment force at a portion close to the ground can be made smaller than that at a portion far from the ground. On the other hand, the height at which a car, a forklift or the like enters the seat shutter is in a low range of 1 to 2 m. Therefore, if the escape force at the part near the ground is reduced and the escape force at the part far from the ground is increased, it is difficult to escape due to wind pressure, and when a car or forklift enters, it can easily escape and reduce damage. Can be. In order to change the exit force, it is preferable to change the contact belt member 2 rather than the guide member side. The size and shape of the contact belt member 2 attached below the seat may be changed so that the guided portion of the contact belt member 2 is easily detached from the guided portion of the contact belt member 2 attached above the seat. What is necessary is just to make it so that it becomes large, so that an exit force goes up continuously according to height. Instead of continuously changing, the contact belt member 2 can be designed in a stepwise manner, for example, according to an appropriate number of steps such as two steps or three steps.

[0043]

As is apparent from the above description, according to the present invention, when a large external force is applied to the seat of the seat shutter device, the first elastically deformable first portion having the convex portion is provided.
The contacted belt member can be detached from the guide member by deforming the guided portion, and the contact belt member can be pushed back into the guide member by winding up the contact belt member detached from the guide member. Therefore, a seat shutter device that does not damage the seat can be provided.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a related configuration of a contact belt member and a guide member in a first embodiment of a seat shutter device of the present invention.

FIG. 2 is an explanatory diagram of a guide member of FIG.

FIG. 3 is a sectional view of each part of the guide member of FIG. 2;

FIG. 4 is a sectional view taken along line EE of FIG. 2;

FIG. 5 is an explanatory diagram of a state where the contact belt member according to the first embodiment is separated from the guide member.

FIG. 6 is an explanatory view of a state in which the detached contact belt member returns to the guide member.

FIG. 7 is an explanatory diagram of a state in which the detached contact belt member returns to the guide member.

FIG. 8 is an explanatory view of a guide member according to a second embodiment of the seat shutter device of the present invention.

FIG. 9 is an explanatory diagram of a related configuration between a contact belt member and a guide member of FIG. 8;

FIG. 10 is a sectional view taken along line EE of FIG. 8;

FIG. 11 is an explanatory diagram of a state in which the detached contact belt member returns to the guide member.

FIG. 12 is an explanatory diagram of a guide member in a third embodiment of the seat shutter device of the present invention.

13 is a sectional view of each part of the guide member of FIG.

FIG. 14 is a longitudinal sectional view of the guide member of FIG. 12, showing two different forms.

FIG. 15 is an explanatory diagram of an example of a configuration for winding a sheet.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Sheet, 2 ... Contact belt member, 2a ... Deformation part, 2b ... Base part, 2c ... First guided part, 2d ... Second
Guided part, 2e ... groove, 2f ... convex part, 3 ... guide member, 3a ... engaging part, 3b ... taper part, 3c ... holding part, 3d ... inclined part, 3e ... corner drop part, 4 ... fixed rod Reference numeral 5: winding thickness adjusting member, 6: supporting member, 7: guide fixing member, 8: bolt, 9: compression spring, 10: sprocket wheel, 10a: auxiliary wheel, 10b: regulating plate, 11
... Guide member, 11a ... Regulator, 12 ... Guide rail, 13
... Bracket, 14 ... Holding member, 15 ... Support member, 1
6: sheet fixing screw, 17: minimum winding diameter, 18: maximum winding diameter.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigeki Ishibashi 1-2-10 Minamishinmachi, Chuo-ku, Osaka-shi, Osaka Inside Toyo Shutter Co., Ltd. No. 2-10 Toyo Shutter Co., Ltd. F term (reference) 2E042 AA06 BA01 DA01

Claims (6)

[Claims] 1. A contact belt member having an elastically deformable first guided portion having a convex portion and a second guided portion which is not substantially deformed, and a sheet having the contact belt member attached to both sides. And a guide member for guiding the contact belt member, and the guide member prevents the first guided portion from coming off in a state where the first guided portion is not deformed, and guides the first guided portion. A first region where the first guided portion deforms and separates from the guide member when a pullout force equal to or more than a predetermined value is applied to the contact belt member, and a first region, which is located above the first region; The second of the detached contact belt member
A seat shutter having a second region for pushing the first guided portion into the guide member by winding up the contact belt member. apparatus. 2. The first guided portion has two fork-shaped flexible arms and convex portions formed on outer portions of the two arms, respectively. The seat shutter device according to claim 1. 3. The seat shutter device according to claim 1, wherein the guide member has tapered portions on both sides of the insertion opening at least in the vicinity of an insertion position of the detached contact belt member. . 4. The seat shutter device according to claim 1, wherein a pressing portion is integrally provided on the guide member in a second area as the engaging means. . 5. The guide member has the same cross-sectional shape over first and second regions, and a holding member is provided as the engagement means in the vicinity of the guide member in the second region. The seat shutter device according to any one of claims 1 to 3, wherein: 6. The apparatus according to claim 1, wherein the first guided portion attached below the sheet is configured to be more easily detached than that attached above the sheet. 2. The seat shutter device according to claim 1.