JP2001020643A - Screen cloth exchange method for roll curtain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the rotation locking of a winding roller in a state that a screen cloth is drawn out even when an exclusive locking mechanism is not provided. SOLUTION: In the screen cloth exchange method for a roll curtain wherein, a joint material 7 is attached to a throwaway fabric 6 attached to a winding roller 3, a screen cloth 4 is exchangeably attached to the joint material 7, used to be drawn out and locked against the winding force of the roller 3, and wound up by the roller by releasing the locking of the drawn-out screen cloth 4, the joint material 7 can be slid in the width direction of the throwaway fabric 6, after the screen cloth 4 or the like is drawn out, the joint material 7 is slid to be projected in the width direction. The winding of the screen cloth 4 or the like is blocked by hooking the projected part 16 on a barrel 2, and in this state the screen cloth 4 is removed from the joint material 7 to be exchanged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for replacing a screen material of a roll curtain. More specifically, the present invention relates to a roll curtain in which a take-up roller is constantly urged in a direction in which the screen material is taken up, and a waste cloth attached to the take-up roller is joined to a screen material covering a window. The present invention relates to a method of replacing a screen material of a roll curtain connected by a material.

[0002]

2. Description of the Related Art Conventionally, as a roll curtain used in a railway car or the like, a disposable cloth attached to a take-up roller and a screen cloth covering a window are detachably connected by a joint material, so that the screen cloth can be easily replaced. (JP-A-10-292756). In such a roll curtain, since the take-up roller is always urged in the take-up direction, when replacing the screen cloth, the rotation of the take-up roller is locked while the screen cloth is pulled out by the lock mechanism. The replacement work is performed. In this lock mechanism, the engagement groove is arranged near the end of the take-up roller by, for example, forming an engagement groove in a support plate that supports the end of the take-up roller. A protruding engagement pin is provided on the waste cloth side, and in a state where the screen cloth is pulled out to a predetermined position, the waste cloth is slid with respect to the take-up roller, and the engagement pin is inserted into the engagement groove to rotate the take-up roller. I try to lock.

[0003]

This roll curtain is easy to apply to newly manufactured railway vehicles and the like, and is being adopted in practice. However, in order to lock the rotation of the take-up roller, the roll curtain is used. Since a dedicated lock mechanism is required, it is difficult to replace an old-type roll curtain already mounted on an existing railway vehicle or the like with the above-described roll curtain. That is, it is possible to remove the old take-up roller already attached to the existing railway vehicle or the like from the support plate and replace it with the above-described take-up roller, but the support plate is used when manufacturing a railway vehicle or the like. It is fixed to the vehicle body by rivets or the like, and it is difficult to replace an old-type support plate with one having the above-described engagement groove. For this reason, it is difficult to realize a lock mechanism, and this is an obstacle to replacing a roll curtain of an existing railway vehicle or the like with the above-described roll curtain that allows easy replacement of the screen cloth.

[0004] The present invention relates to a screen material for a roll curtain, in which the screen material can be exchanged in a state where the rotation of the take-up roller is locked without a special lock mechanism in a roll curtain in which the screen material can be easily replaced. The purpose is to provide an exchange method.

[0005]

In order to achieve the above object, according to the present invention, there is provided a roll in which a screen cloth is exchangeably attached to a tip of a waste cloth attached to a take-up roller via a joint material. In the method of exchanging the screen cloth of the curtain, the joint material is provided so as to be slidable in the width direction with respect to the waste cloth. After the screen cloth and the waste cloth are unwound from the winding roller and pulled out, the joint material is slid against the waste cloth. To protrude in the width direction and prevent the screen cloth and the discarded cloth from being wound up by hooking the protruded portion on the member on the window frame side, and in this state, remove the screen cloth from the joint material and replace it I have.

[0006] Therefore, when the joint material is slid in the width direction with respect to the waste cloth in a state where the screen cloth and the waste cloth are pulled out, the ends of the joint material protrude and protrude. At the window frame side. For this reason, this protruding portion hinders the winding of the waste cloth and the screen cloth, and the rotation of the winding roller is locked while the screen cloth and the joint material are being pulled out. In this state, the screen material is removed from the joint material and replaced. Since the rotation of the take-up roller is locked, the operator can exchange the screen cloth with both hands. In this manner, the rotation of the take-up roller can be easily and reliably locked by sliding the joint member, and thus there is no need to provide a dedicated lock mechanism.

In this case, it is preferable that the member on the window frame side be a member for hiding the take-up roller, as in the method for replacing the screen material of the roll curtain according to the second aspect. The member that hides the take-up roller cannot pass through a member that protrudes more largely in the width direction than the take-up roller when winding up a waste cloth or screen cloth. Therefore,
After drawing out the screen cloth and the litter cloth, the joint material is slid in the width direction with respect to the litter cloth so as to protrude, so that the protruding portion can be hooked on a member that hides the winding roller.

It is preferable that the member on the window frame side be a member for supporting the end of the take-up roller, as in the method for replacing a screen material of a roll curtain according to the third aspect.
A member that supports the end of the take-up roller cannot pass through a material that protrudes more largely in the width direction than the waste cloth or the screen cloth when winding up the waste cloth or the screen cloth. Therefore, after the screen cloth and the waste cloth are pulled out, the joint material is slid in the width direction with respect to the waste cloth to protrude, so that the protruding portion can be hooked on the member supporting the end of the winding roller. .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail based on the best mode shown in the drawings.

FIGS. 1 to 4 show an example of an embodiment of a roll curtain for carrying out the screen cloth changing method of the present invention. How to change the screen material of this roll curtain
Tip 6b of throw-away cloth 6 attached to take-up roller 3
The screen material 4 is attached to the joint material 7 in a replaceable manner, and the screen material 4 is pulled out and locked against the winding force of the winding roller 3 while being used. It is used in a roll curtain in which the screen cloth 4 is wound up by the take-up roller 3 by releasing the locking of the cloth 4. Then, after pulling out the waste cloth 6, the joint member 7 is slid with respect to the waste cloth 6 to project in the width direction, and the projected part (hereinafter referred to as a projected part) 16 is hooked on a member on the window frame side. To prevent the screen cloth 4 and the waste cloth 6 from being wound up. In this state, the screen cloth 4 is removed from the joint member 7 and replaced. Than it is.

This roll curtain is, for example, for a window of a railway vehicle. A roll 2 is provided above the window 1 along the base of a net shelf (not shown), and is wound inside the roll 2. A roller 3 is provided. That is, the knuckle 2 is a member on the window frame side on which the projecting portion 16 of the joint member 7 is hooked. Guide rails 5 are provided on both left and right sides of the window 1.

The take-up roller 3 has a substantially cylindrical shape, and both ends thereof are rotatably supported by a pair of left and right support plates 9 fixed to the vehicle body by welding or screwing. The winding roller 3 is constantly urged to rotate in the winding direction by urging means such as a torsion coil spring (not shown) housed therein. On the outer peripheral surface of the take-up roller 3, a notch 3a and a mounting groove 3b formed in a flat seat are formed over the entire length of the take-up roller 3. Notch 3a
2, the joint member 7 is arranged when the waste cloth 6 is wound up, as shown by a two-dot chain line in FIG. on the other hand,
The mounting groove 3b is for mounting the waste cloth 6, and the opening is formed to be narrower than the bottom at the back of the groove.

The joint member 7 has two mounting grooves 7a,
7 b is formed over the entire length of the joint member 7. The opening of each of the mounting grooves 7a and 7b is smaller than the bottom of the groove. The first mounting groove 7 a is formed on the upper end surface of the joint member 7, and the second mounting groove 7 b is formed on the lower end surface of the joint member 7. The surface 7c on the front side of the joint member 7 is formed of a curved surface having the same curvature as the outer peripheral surface of the winding roller 3, and the surface on the back side is formed as a flat surface.
Therefore, when the joint member 7 is disposed in the notch 3a of the winding roller 3, as shown by a two-dot chain line in FIG.
The joint member 7 becomes a part of the circumference of the take-up roller 3, and the cross-sectional shape thereof becomes circular. The joint member 7 is manufactured at low cost by extruding, for example, an aluminum alloy.

On the other hand, the upper end 6a and the lower end 6b of the waste cloth 6
Is provided with a bag portion (hereinafter, referred to as a bag portion 6a, 6b) which is folded back and sewn and through which the core materials 11, 12 are passed.
The bag portion 6a at the upper end is inserted into the mounting groove 3b of the take-up roller 3, and by inserting the core material 11 into the bag portion 6a, a joint is formed which is prevented from falling out of the mounting groove 3b. I have. The bag portion 6b at the lower end of the waste cloth 6 is inserted into a first mounting groove 7a formed in the joint member 7, and the core material 12 is inserted into the bag portion 6b so as to be removed from the first mounting groove 7a. Of the joint member 7 in the width direction is prevented. The length of the discarded cloth 6 is determined in consideration of, for example, the ease with which the screen cloth 4 can be replaced, but the joint material 7 is fitted into the notch 3a at least when the cloth 3 is wound around the take-up roller 3. It is necessary to make the length so as to abut completely.

The screen cloth 4 has a size sufficient to cover the window 1. The upper and lower ends of the screen cloth 4 are folded and sewn, for example, to form bag portions 4a and 4b. The bag portion 4a at the upper end of the screen cloth 4 is inserted into the second mounting groove 7b of the joint material 7, and the core material 13 is inserted into the bag portion 4a to form a protruding ridge at the tip. To prevent the screen cloth 4 from coming out of the second mounting groove 7b in the pull-out direction,
The joint which enables the screen cloth 4 to slide in the width direction with respect to the horizontal direction is formed. In addition, screen cloth 4
3 is inserted into a slit 8a formed in the horizontal bar 8, as shown in FIG.
By inserting the core material 14 into the screen material 4b, a ridge with a bulged tip is formed to prevent the screen material 4 from slipping out of the slit 8a in the winding direction and the width direction of the horizontal bar 8 with respect to the screen material 4. A joint is configured to allow sliding into Runners 10 are inserted into both ends of the horizontal bar 8, and the runners 10 are fixed by screws 15. The runner 10 is inserted into a guide slit 5a formed in the guide rail 5, is guided by the guide slit 5 and moves, and is caught by a notch 5b formed at a predetermined interval continuously with the guide slit 5a. Is locked in the state of being pulled out. This horizontal bar 8 is used as a guide rail 5
To remove the runners, the left and right runners 10 may be pulled out from the guide slits 5a of the guide rails 5 with the horizontal bar 8 inclined.

Each of the core members 11 to 14 is provided with a respective bag portion 3b,
For ease of insertion into 7a, 7b, 4b it is preferred to use, for example, a piano wire.

When using this roll curtain,
The horizontal cloth 8 may be grasped and pulled out, and the left and right runners 10 may be hooked on the optional cutouts 5 b of the guide rail 5 to lock the screen cloth 4. When the horizontal bar 8 is lowered, the screen cloth 4 is pulled out from the winding roller 3 and covers the window 1 to block sunlight. Since the screen cloth 4 is large enough to cover the window 1, as shown in FIG. 4, even when the runner 10 is hooked on the bottom notch 5b, the joint material 7 and the The discarded cloth 6 is not exposed from the knuckle 2, and the appearance is not impaired during use.

On the other hand, in order to store the roll curtain, the runner 10 is removed from the notch 5b to release the locking of the screen cloth 4, and the screen cloth 4 may be wound up by the winding roller 3. As the horizontal bar 8 rises, the take-up roller 3 takes up these in the order of the waste cloth 6 → the joint material 7 → the screen cloth 4. At this time, when the discarded cloth 6 is wound first and the joint member 7 is arranged in the cutout portion 3a of the winding roller 3, the joint member 7
Becomes a part of the take-up roller 3 and the profile of the cross-sectional shape becomes substantially circular. Therefore, the screen cloth 4 that is much longer than the waste cloth 6 can be wound by the winding roller 3 having a substantially circular cross-sectional shape.
The winding roller 3 can be rotated in a well-balanced manner without losing the winding shape, and the occurrence of vibration and noise can be suppressed. Also, the discarded cloth 6 and the joint material 7
Since these are taken up by the take-up roller 3 together with the screen cloth 4, these do not interfere.

Next, a method of replacing the screen cloth 4 will be specifically described.

First, the screen cloth 4 is pulled out by grasping the horizontal bar 8 and the runner 10 is hooked on the lower notch 5b to lock the screen cloth 4. Thereafter, the screen cloth 4 is further pulled out while grasping the middle of the screen cloth 4, the discarded cloth 6 wound around the take-up roller 3 is drawn out, and the joint material 7 is completely exposed from the disc 2. Then, the joint material 7 is discarded together with the screen cloth 4 with the cloth 6.
Slide in the width direction. Thereby, the end of the joint member 7 protrudes.

When the force with which the screen cloth 4 is pulled out is reduced in this state, the take-up roller 3 rotates in the take-up direction, and the waste cloth 6 is taken up until the projecting portion 16 of the joint member 7 is caught by the knuckle 2. That is, the joint material 7
The rotation of the take-up roller 3 is locked by the protruding portion 16 of the take-up roller 2 being hooked on the knuckle 2, and even after the force for pulling out the screen cloth 4 is completely released, the waste cloth 6 and the screen cloth 4 are still It is not wound up.

Next, the runner 10 is detached from the guide rail 5 by inclining the horizontal bar 8, and the bag 4 a at the upper end of the screen cloth 4 is slid in the width direction with respect to the joint member 7 to remove the screen cloth 4. Remove from joint material 7. After removing the screen cloth 4 together with the horizontal bar 8 from the joint material 7 in this manner, one runner 10 is removed from the horizontal bar 8, and the bag 4 b at the lower end of the screen cloth 4 is pulled out together with the core material 14 to remove the screen cloth 4. The horizontal bar 8 is removed from (Fig. 5). At this time, the core 14 was first removed from the bag 4b of the screen cloth 4. Then, the bag portion 4b at the lower end of the new screen cloth 4 is
a, and the core member 14 is inserted to prevent the bag portion 4b from falling off. Thereafter, the removed runner 10 is inserted into the end of the horizontal bar 8 and fixed with the screw 15. Next, the bag 4a at the upper end of the new screen cloth 4
Into the second mounting groove 7b of the joint member 7,
Further, the core 13 is inserted to prevent the core 13 from falling off. During these operations, the rotation of the take-up roller 3 is locked by the joint member 7, so that the operator can perform these operations with both hands.

After the new screen material 4 is attached to the joint material 7 in this manner, the screen material 4 and the discarded cloth 6 are slightly pulled out to separate the projecting portion 16 of the joint material 7 from the knuckle 2, and the screen material 4 and the joint material 4 are joined together. The protruding part 16 is retracted by sliding in the opposite direction to the case where the material 7 is protruded. When the force of pulling out the screen cloth 4 is reduced, the cloth 6 → the joint material 7
→ The screen cloth 4 is wound up by the winding roller 3 in the order, the roll curtain is stored, and the replacement operation of the screen cloth 4 is completed.

In the method for exchanging screen cloth of the present invention, the rotation of the take-up roller 3 can be locked and the lock can be released only by sliding the joint member 7 in the width direction with the screen cloth 4 pulled out. Therefore, the replacement work of the screen cloth 4 is performed easily and quickly.

When the screen cloth 4 is replaced by the above-described method, the rotation can be easily locked and unlocked even if the roll curtain is not provided with a dedicated lock mechanism for locking the rotation of the take-up roller 3. Can be. For this reason, even for an existing railway vehicle or the like in which the support plate 9 cannot be replaced with one having the engagement groove, the replacement of the screen cloth 4 can be easily performed by connecting the discarded cloth 6 and the screen cloth 4 with the joint member 7. Roll curtains can be applied.

Although the above-described embodiment is an example of a preferred embodiment of the present invention, the present invention is not limited to this embodiment, and various modifications can be made without departing from the gist of the present invention. For example, in the above description, as the member on the window frame side for hooking the protruding portion 16 of the slid joint member 7, the knuckle 2, which is a member for hiding the take-up roller 3, is used. May be used, for example, a support plate 9 that supports the end of the take-up roller 3. That is, the joint material 7 is attached to the support plate 9.
The rotation of the take-up roller 3 may be locked by hooking the projecting portion 16.

In the above description, the second mounting groove 7b is formed at the lower end of the joint member 7 as a means for detachably mounting the joint member 7 and the screen cloth 4, but this mounting method is not necessarily required. It is not limited to. For example, as shown in FIG.
The clip mechanism 30 which firmly clamps the upper end 4a of the screen cloth 4 by the spring 31 is formed at the lower part of
The screen cloth 4 may be detachably attached by sandwiching the upper end 4a.

[0028]

As described above, in the method for changing the screen cloth of the roll curtain according to the first aspect, the joint material is slidable in the width direction with respect to the waste cloth, and after the screen cloth and the waste cloth are drawn out, the joint is removed. The material is slid with respect to the discard cloth to protrude in the width direction, and the protruding portion is hooked on the member on the window frame side to prevent winding of the screen cloth and the discard cloth, and in this state, the screen cloth is joined. Since it is detached from the material and replaced, it does not need a special lock mechanism,
The rotation of the take-up roller can be locked with the screen cloth pulled out, and the screen cloth can be replaced in this state. For this reason, even for existing railway vehicles, etc., in which it is difficult to retrofit the lock mechanism, it is possible to apply a roll curtain in which the screen cloth can be easily replaced by connecting the waste cloth and the screen cloth with the joint material. Become.

In this case, the member on the window frame side may be a member for hiding the take-up roller, as in the method for exchanging screen cloth for a roll curtain according to the second aspect, or the screen cloth exchange for a roll curtain according to the third aspect. Like the way
It is preferable that the member on the window frame side be a member that supports the end of the take-up roller. The member that hides the take-up roller and the member that supports the end of the take-up roller cannot pass through the protruding portion of the joint material when winding up discarded cloth or screen cloth. Can be locked.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of an embodiment of a roll curtain for implementing a screen cloth replacement method of the present invention, in a state where rotation of a winding roller is locked.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a front view showing a use state of the roll curtain of FIG. 1;

FIG. 5 is a front view showing a state where a horizontal bar is removed from the screen cloth of the roll curtain of FIG. 1;

FIG. 6 is a cross-sectional view showing another embodiment of the joint material of the roll curtain of FIG. 1;

[Explanation of symbols]

2 Distortion (member hiding take-up roller) 3 Take-up roller 4 Screen cloth 6 Discarded cloth 7 Joint material 9 Support plate (member supporting end of take-up roller) 16 Projecting portion of joint material

Claims (3)

[Claims] In a method for replacing a screen material of a roll curtain, wherein a screen material is exchangeably attached to a tip of a waste cloth attached to a take-up roller via a joint material, the joint material has a width relative to the waste cloth. After the screen cloth and the discarded cloth are unwound from the winding roller and pulled out, the joint material is slid with respect to the discarded cloth to protrude in the width direction. A method for exchanging a screen material for a roll curtain, wherein the screen material and the waste cloth are prevented from being wound up by being hooked on a member on a window frame side, and the screen material is removed from the joint material and exchanged in this state. 2. The method according to claim 1, wherein the member on the window frame side is a member for hiding the take-up roller. 3. The method according to claim 1, wherein the member on the window frame side is a member that supports an end of the winding roller.