JP3098945B2 - blind - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a blind.

[0002]

2. Description of the Related Art A conventional blind is disclosed in Japanese Patent Application No. 6-29078 filed by the applicant of the present invention, which includes a first fastening member and a first fastening member.
A second fastening member movable between a position to be fastened to the fastening member and a position at which the fastening is released is fastened to the second fastening member of the stopper device capable of restraining the movement of the elevating cord by fastening. One end of the cord is connected,
The other end of the stopper release cord is led out of the head box, and by pulling the other end of the stopper release cord downward, one end of the stopper release cord is pulled by the second amount.
The fastening member is moved so as to be separated from the first fastening member, and the restraint of the elevating cord is released.

[0003]

However, in the conventional blind as described above, when lowering the blind, the other end of the stopper release cord is pulled to separate the second fastening member from the first fastening member. , The lifting and lowering cords are released and lowered by the weight of the slats and the bottom rail. Therefore, particularly as the product becomes larger, the impact when it descends to the lowermost end becomes greater, and there is a possibility that parts such as a tape holder for fixing the ladder tape supporting the slat to the bottom rail may be damaged. The present invention is to solve such a problem.

[0004]

In order to achieve the above-mentioned object, the present invention according to claim 1 of the present invention is supported in alignment by a head box (12) and a ladder tape (16). A plurality of slats (10), a bottom rail (14) arranged at the lower end of the row of slats (10), and one end connected to the bottom rail (14), and the other end connected to the slat (10). After being inserted through the row and introduced into the head box (12), the lifting / lowering cord (1) derived from the head box (12)
8), a first fastening member (42) disposed in the head box (12), and a position for fastening the first fastening member (42) to restrain the movement of the lifting / lowering cord (18);
A stopper device (21) having a second fastening member (44) movable between a position in which the fastening is released and the lifting cord (18) is not restrained, and the head box (1).
A stopper release cord (56) for separating the second fastening member (44) from the first fastening member (42) by operating one end derived from 2), wherein the head comprises: In the box (12), the second fastening member (42) is provided with the first fastening member (4) with respect to the amount of operation of the stopper release cord (56).
2) A descent speed reduction device (46, 70) for reducing the distance away from (2) is provided.

When the stopper device is released by pulling one end of the stopper releasing cord downward, the lowering speed reduction device causes the second fastening member to move the first fastening member in comparison with the amount of pull-down of the stopper releasing cord. By reducing the distance between the first and second fastening members and the amount of release of the first and second fastening members, the restraint of the lifting / lowering cord is released to the extent that a desired amount of resistance is received, and the weight of the slats and the bottom rail is reduced. Can be adjusted, such as slowing down speed, so that the impact force at the time of the lowest descent can be reduced and the cause of component damage can be eliminated.

According to a second aspect of the present invention, in the first aspect, the descent speed reduction device (46) is rotatably provided in the head box (12). A first disk member (5) having a disk shape
0) and the first disk member (50) are provided so as to rotate integrally and concentrically with the first disk member (50), and have a disk-like shape having a diameter larger than that of the first disk member (50), and the stopper release A second disk member (52) to which the other end (56b) of the connecting cord (56) is connected so as to be able to be wound and unwound;
4a) is a second fastening member (4) of the stopper device (21).
And a connection cord (54) that is connected to the first disc member (50) so as to be wound and unwound so that the other end (54b) can be wound and unwound. ) Is unwound from the second disk member (52), the connection cord (54) is wound around the first disk member (50), and the second fastening member (44) is connected to the first disk member (44). It is characterized in that it is configured to be separated from the fastening member (42).

As described above, the other end of the stopper release cord is wound around the large-diameter second disc member, and the other end of the connecting cord is wound around the small-diameter first disc member. In addition, when the second disk member rotates, the stopper releasing cord is wound or unwound more than the connecting cord, even though the second disc member is rotated by the same angle. Accordingly, since the length of the connecting cord wound around the first disk member is shorter than the amount of the stopper releasing cord pulled down and unwound from the second disk member, the amount of pulling down the stopper releasing cord is reduced. Even if it is increased, the distance at which the second fastening member separates from the first fastening member becomes short, so that the fastening force of the stopper device can be adjusted so as to give a desired amount of resistance to the lifting cord.

Further, since the descent speed reduction device is composed of two disk members, the structure is simple and compact, so that the space between the stopper device in the head box and the lead-out portion of the stopper release cord is provided. Can be stored in a small space.

According to a third aspect of the present invention, in the first aspect, the descent speed reduction device (70) is rotatably provided in the head box (12). A first disk member (5) having a disk shape
0) and a second disk member provided so as to rotate integrally and concentrically with the first disk member (50), and having a disk-like shape having a larger diameter than the first disk member (50). (52), a first end connected to the second fastening member (44) of the stopper device (21) and the other end wound around the first disk member (50) so as to be wound and unwound. A connecting cord (72) is provided in the head box (12) and is movable in the longitudinal direction of the head box (12), and the other end (56b) is fixed in the head box (12). The stopper release code (5
6) a pulley device (60) around which the second
A second connecting cord (68) having one end connected to the disk member (52) so as to be wound and unwound and the other end connected to the pulley device (60); When one end of the release cord (56) is pulled down, the pulley device (60) moves, and the second connecting cord (68) is unwound from the second disk member (52). The first connection cord (72) is wound around the first disk member (50) so that the second fastening member (44) is separated from the first fastening member (42). It is characterized by.

As a result, when one end of the stopper release cord is pulled down, the length of the pulled down stopper release cord is subtracted by the number of pulleys included in the pulley device + 1.
The pulley device moves in the longitudinal direction of the head box by a distance divided by, and the second connecting cord is unwound from the second disk member by the distance that the pulley device has moved. At this time, the first disk member also rotates integrally with the second disk member and winds up the first connection cord. However, since the winding amount is smaller than that in a case where no pulley is provided, the pulley device is used. The distance in which the second fastening member is separated from the first fastening member is shorter than in the case where it is not provided. For this reason, the resistance force applied to the lifting cord is increased, and the provision of the pulley device makes it possible to further reduce the descending speed of the slats and the bottom rail.

Further, since the descent speed reduction device is constituted by the two disk members and the pulley device, the structure is simple and the size can be reduced. Therefore, the lead-out portion of the stopper release cord from the stopper device in the head box. It can be stored in a small space between them.

According to a fourth aspect of the present invention, in the second aspect, the second fastening member (44) is elastic in a direction in which the second fastening member (44) is fastened to the first fastening member (42). The downward speed reduction device (46) is constantly urged by the member (25), and is urged in the direction in which the stopper releasing code (56) is always wound around the second disk member (52). A spring member (80) is provided.

Thus, the first disk member, which rotates integrally with the second disk member, is always urged by the spring member in the direction in which the connecting cord is unwound, so that when the pull-down force of the stopper releasing cord is released. Since the first disk member can positively unwind the connecting cord, the resistance force from the stopper releasing cord side can be eliminated, and the pressing force of the elastic member can be prevented from being weakened. 2nd without increasing
The fastening member can be securely fastened to the first fastening member.

Further, since the elastic force of the elastic member can be reduced, the pressing force of the second fastening member in the direction of the first fastening member is reduced. The frictional force applied to the lifting cord from the first fastening member and the second fastening member can be reduced, and wear of the lifting cord can be reduced. In addition,
The reference numerals in parentheses indicate corresponding members in the embodiment described later.

[0015]

FIG. 1 and FIGS. 2A and 2B show a first embodiment of the present invention. A plurality of slats 10 are vertically arranged at predetermined intervals.
The head box 12 is arranged at the upper end of row 0, and the bottom rail 14 is arranged at the lower end.

A ladder tape 16 is provided between the head box 12 and the bottom rail 14, and each slat 10 is supported by the ladder tape 16. The upper end of the ladder tape 16 is rotatably connected to a rotating drum 17 rotatably provided in the head box 12, and the slat 10 can change the inclination angle by the rotation of the rotating drum 17. It is.

A tilter 2 is attached to one end of the head box 12.
The upper end of a hollow tilter input shaft 22 is rotatably connected to the tilter 20. A rotation shaft 23 that can rotate integrally with the rotation drum 17 is connected to the tilter 20, and rotation of the tilter input shaft 22 is transmitted to the rotation shaft 23 by the tilter 20. The lower end of the tilter input shaft 22 is led out of the head box 12, and is connected to a hollow rotary operation rod 24 which can be integrally rotated by a connecting device 40 and can change the connecting angle. A hollow grip 32 is provided at the lower end of the rotary operation rod 24 so as to be relatively movable in the axial direction.

The lifting cord 18 has one end at the bottom rail 1.
4 and the other end thereof is inserted through an insertion hole (not shown) provided in
Through the stopper device 21 provided near one end in the head box 12, and through the inside of the tilter input shaft 22, the coupling device 40, the rotary operation rod 24, and the grip 32, respectively. The knobs 26 arranged below the grip 32 are connected to each other so as to be able to move up and down.

A stopper device 21 is provided in the head box 12. The stopper device 21 is attached to the first fastening member 42 by a spring (elastic member) 25 so as to always be fastened to the first fastening member 42. And the second fastening member 44 being urged. The first fastening member 42 and the second fastening member 44 do not restrict the movement of the lifting cord 18 inserted between them in the slat 10 ascending direction, but can restrict the movement of the slat 10 in the descending direction.

A descent speed reduction device 46 is provided between the stopper device 21 and the tilter input shaft 22. The descent speed reduction device 46 is rotatably provided in a case 48 fixed in the head box 12. A first disk member 50 having a disk shape; and a disk shape having a diameter larger than that of the first disk member 50, the first disk member 50 being provided concentrically and integrally with an upper portion of the first disk member 50. And one end 54a is connected to the second fastening member 44 of the stopper device 21 and the other end 54b is connected to the lower surface of the second disk member 52 to form the first disk member 50. And a connection cord 54 wound so as to be able to be wound and unwound.

The other end 56b of the stopper releasing cord 56, one end of which is inserted into the tilter input shaft 22, the connecting device 40, and the rotary operating rod 24 and connected to the grip 32, is wound around the second disk member 52. And it is connected so that it can be unwound,
The direction in which the stopper release cord 56 is wound around the second disc member 52 and the direction in which the connection cord 54 is wound around the first disc member 50 are opposite to each other. Accordingly, when one end of the stopper release cord 56 is pulled down, the stopper release cord 56
The connection cord 54 is unwound from the disc member 52 and the connection cord 54 is wound around the first disc member 52, the second fastening member 44 is separated from the first fastening member 42, and conversely, one end of the stopper release cord 56 When the withdrawal is released, the second
While the fastening member 44 moves in the direction of the first fastening member 42 and the connecting cord 54 is unwound from the first disc member 52,
The stopper release cord 56 is wound around the second disk member 52.

Next, the operation of the first embodiment will be described. As shown in FIGS. 1 and 2B, the second fastening member 44 is fastened to the first fastening member 42 by the elastic force of the spring 25, and the movement of the lifting cord 18 is restricted. When releasing the restraint of the elevating cord 18 and lowering the slat 10, the grip 32 is pulled downward in FIG. 1 to lower one end of the stopper releasing cord 56. As a result, the stopper release cord 56 is
(A) Since it is pulled in the direction of the middle arrow A, the other end 56b of the stopper releasing cord 56 rotates the second disk member 52 in the counterclockwise direction (the direction of the arrow B in FIG. 2 (a)) to release the stopper. The cord 56 is unwound from the second disk member 52. At this time, since the first disk member 50 also rotates integrally with the second disk member 52, the connection cord 54 is wound up, and the second fastening member 44 is opposed to the first fastening member 4 against the elastic force of the spring 25.
However, the first disc member 50 has a smaller radial dimension than the second disc member 52, so that the stopper cord 56 is unwound compared to the unwinding amount of the stopper releasing cord 56. Since the amount to be wound is smaller by the ratio of the radius dimension, the amount of movement of the second fastening member 44 in the direction away from the first fastening member 42 is smaller than the amount of pulling down of the grip 32. Accordingly, the restraint of the lifting cord 18 is released to such an extent that the bottom rail 14 and the slat 10 can be lowered by their own weight, but they are not completely released, and a resistance is applied by the stopper device 21. As a result, the bottom rail 14 and the slat 10 descend slowly.

Next, when the stopper device 21 is fastened again, the hand is released from the grip 32, and the force for pulling the stopper release cord 56 in the direction of arrow A in FIG. 2A is released. As a result, the second fastening member 44 moves in the direction in which the second fastening member 44 is fastened to the first fastening member 42 by the elastic force of the spring 25, so that one end 54a of the connecting cord 54 is pulled leftward in FIG. 54b rotates the second disk member 52 clockwise to be unwound from the first disk member 50 that rotates integrally with the second disk member 52, and the second fastening member 44 becomes the first fastening member 44.
At the time when the first disk member 50 and the second disk member 52 are fastened to the fastening member 42, the rotation of the first disk member 50 and the second disk member 52 stops. At this time, since the stopper release cord 56 is wound around the second disk member 52, the grip 32 rises together with one end of the stopper release cord 56, and the stopper release cord 56 is attached to the second disk member 52 by a predetermined amount. The lifting of the grip 32 stops at the time of winding.

As described above, when the stopper device 21 is released, the distance at which the second fastening member 44 is separated from the first fastening member 42 by the descending speed reduction device 46 is compared with the amount by which the stopper release cord 56 is pulled down. By shortening the length and reducing the release amount of the first fastening member 42 and the second fastening member 44, the elevating cord 1 can receive a resistance of a desired magnitude.
8 and release the slat 10 and the bottom rail 14
Since the descent speed due to its own weight can be reduced, the impact force at the time of the lowest descent becomes small, and the cause of component damage can be eliminated.

Further, by making the radial dimension of the second disk member 52 larger than that of the first disk member 50, the stopper release cord 56 can be compared with the length of the cord unwound from the second disk member 52. Thus, the length of the connecting cord 54 wound around the first disk member 50 is shortened, and even if the pull-down amount of the stopper release cord 56 is large, the distance at which the second fastening member 44 separates from the first fastening member 42 is increased. Since the resistance is given to the lifting cord 18 by shortening the length, the ratio of the radial dimension of the first disk member 50 and the second disk member 52 is changed to reduce the amount of pull-down of the stopper releasing code 56. The ratio of the distance at which the second fastening member 44 is separated from the first fastening member 42 changes, the resistance applied to the lifting cord 18 can be changed, and the fastening force of the stopper device 21 can be adjusted. .

FIG. 3 shows a second embodiment of the present invention.
The lowering speed reduction device 70 shown in this figure has a pulley device 60 provided between the lowering speed reduction device 46 of the first embodiment and the tilter 20, and the other end 5 of the stopper release cord 56.
6b is wound around the pulley device 60 and then fixed in the head box 12, and the pulley device 60 and the second disk member 52 are connected by the second connection cord 68. The other configuration is the same as the first embodiment. This is the same as the embodiment. That is, the pulley device 60
A rail member 62 fixed in the head box 12 and having grooves 62a extending in the longitudinal direction of the head box 12 formed on opposing surfaces in the vertical direction;
3 (that is, the left and right direction of the head box 12 in FIG. 1) along the groove 62a of FIG.
6 and a pulley 64 rotatably supported by the second connecting cord 68. One end of the second connecting cord 68 is connected to the supporting member 66, and the other end is wound and unwound on the second disk member 52. It is connected as possible.

Thus, when the grip 32 is pulled down, one end of the stopper release cord 56 is
When the pulley 64 is pulled down, the pulley 64 is guided by the rail member 62 and moves rightward in FIG. 3 by の of the pulled length, and the second connecting cord 68 pulls down the stopper releasing cord 56. Second half of the length
It is unwound from the disk member 52. Therefore, the amount by which the first disc member 50 winds the first connection cord 72 is also の of the first embodiment, and the second fastening member 44 is だ け of the first embodiment. It will move in the direction away from the one fastening member 42. For this reason, since the resistance force applied to the lifting cord 18 increases, the lowering speed of the slat 10 and the bottom rail 14 can be further reduced.

FIGS. 4A and 4B show a third embodiment. The first disk member 50 and the second disk member 52 are provided with a spring member 80 that constantly urges the second disk member 52 in a direction in which the stopper release cord 56 is wound. The other configuration is the same as that of the first embodiment.

Next, the operation of the third embodiment will be described. When one end of the stopper releasing cord 56 is pulled down together with the grip, the other end 56b rotates the second disk member 52 against the elastic force of the spring member 80, and the stopper releasing cord 56 is unwound. Thus, the fastening of the stopper device 21 is released as in the first embodiment.

Next, when the hand is released from the grip, the other end 56b of the stopper releasing cord 56 is wound around the second disk member 52 by the elastic force of the spring member 80, and the other end 54b of the connecting cord 54 is spring-loaded. At the same time as the first disc member 50 is positively unwound by the elastic force of the member 80, the one end 54a of the connecting cord 54 moves toward the first fastening member 42 by the elastic force of the spring 25 together with the second fastening member. The device 21 is fastened.

When the pull-down force of the stopper releasing cord 56 is released, the first disk member 50 positively unwinds the connecting cord 54 to reduce the resistance from the stopper releasing cord 56 side. Since the pressing force of the spring 25 can be prevented from being weakened, the second fastening member 44 can be connected to the first fastening member 42 without increasing the elastic force of the spring 25.
Can be securely fastened.

Further, since the elastic force of the spring 25 can be reduced, the pressing force of the second fastening member 44 in the direction of the first fastening member 42 becomes small, so that the lifting cord 18 is moved in the upward direction of the slat 10. At this time, the first fastening member 42
In addition, the frictional force applied from the second fastening member 44 to the lifting cord 18 can be reduced, and the wear of the lifting cord 18 can be reduced.

[0033]

As described above, according to the first aspect of the present invention, when the stopper is released by pulling one end of the stopper releasing cord downward, the stopper is released by the descending speed reduction device. By reducing the distance that the second fastening member separates from the first fastening member and reducing the release amount of the first fastening member and the second fastening member as compared with the amount of pulling down of the use cord, the resistance of the desired magnitude can be reduced. It is possible to release the restraint of the lifting cord to the extent that it is received and adjust the slowing down speed by the weight of the slats and bottom rails, etc., so that the impact force at the lowest descent can be reduced and the cause of component damage can be eliminated. it can.

According to a second aspect of the present invention, the other end of the stopper releasing cord is provided on a large-diameter second disk member, and the other end of the connecting cord is provided on a small-diameter first disk member. When the first disk member and the second disk member are rotated, the stopper releasing cord is wound or unwound more than the connecting cord, even though the first disc member and the second disc member are rotated by the same angle. Or you'll be killed. Accordingly, the length of the connecting cord wound around the first disc member is shorter than the amount of the stopper releasing cord pulled down and unwound from the second disc member. Even if it is increased, the distance at which the second fastening member separates from the first fastening member becomes short, so that the fastening force of the stopper device can be adjusted so as to give a desired amount of resistance to the lifting cord.

Further, since the descent speed reduction device is constituted by the two disc members and the connecting cord, the structure is simple and the size can be reduced. Therefore, the lead-out portion of the stopper releasing cord from the stopper device in the head box. It can be stored in a small space between them.

According to the third aspect of the present invention, when one end of the stopper releasing cord is pulled down, the length of the pulled down stopper releasing cord is reduced by the number of pulleys included in the pulley device. The pulley device moves in the longitudinal direction of the head box by a distance divided by +1 and the second connecting cord is unwound from the second disk member by the distance that the pulley device has moved. At this time, the first disk member also rotates integrally with the second disk member and winds up the first connection cord. However, since the winding amount is smaller than that in a case where no pulley is provided, the pulley device is used. The distance in which the second fastening member is separated from the first fastening member is shorter than in the case where it is not provided. For this reason,
Since the resistance force applied to the lifting cord is increased, the lowering speed of the slat and the bottom rail can be further reduced by providing the pulley device.

Further, since the descent speed reduction device is composed of two disk members, a pulley device and two connecting cords, the structure is simple and the size can be reduced. It can be stored in a small space between the release code and the lead-out section.

According to the fourth aspect of the present invention, the first disk member, which rotates integrally with the second disk member, is always urged by the spring member in the direction of unwinding the connecting cord.
When the pull-down force of the stopper release cord is released,
Since the first disk member can positively unwind the connecting cord, the resistance from the stopper releasing cord side can be eliminated, and the pressing force of the elastic member can be prevented from being weakened. The second fastening member can be securely fastened to the first fastening member without increasing the size.

Further, since the elastic force of the elastic member can be reduced, the pressing force of the second fastening member in the direction of the first fastening member is reduced. The frictional force applied to the lifting cord from the first fastening member and the second fastening member can be reduced, and wear of the lifting cord can be reduced.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a blind according to a first embodiment of the present invention.

FIG. 2A is a plan view showing a state of the stopper device and the descending speed reduction device when the stopper device of the first embodiment is released, and FIG. 2B is a plan view of the first embodiment. It is a top view showing the state of a stopper device and a descent speed reduction device when a stopper device is fastened.

FIG. 3 is a perspective view showing a second embodiment.

FIG. 4A is a plan view showing the state of the stopper device and the descending speed reduction device when the stopper device of the third embodiment is released, and FIG. 4B is a plan view showing the state of the third embodiment. It is a top view showing the state of a stopper device and a descent speed reduction device when a stopper device is fastened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Slat 12 Head box 14 Bottom rail 16 Ladder tape 18 Elevating cord 21 Stopper device 25 Spring (elastic member) 42 First fastening member 44 Second fastening member 46, 70 Lowering speed reduction device 50 First disc member 52 Second circle Plate member 54 Connecting code 54a One end 54b Other end 56 Stopper releasing code 56b Other end 60 Pulley device 68 Second connecting code 72 First connecting code 80 Spring member

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-217338 (JP, A) JP-A-7-217336 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E06B 9/322 E06B 9/324

Claims (4)

(57) [Claims] 1. A head box (12), a plurality of slats (10) supported in alignment by ladder tape (16), and a bottom rail (14) arranged at the lower end of the row of slats (10). One end is connected to the bottom rail (14), and the other end is inserted into the row of slats (10) and introduced into the head box (12), and thereafter is led out of the head box (12). A lifting / lowering cord (18), which is disposed in the head box (12), and is fastened to the first fastening member (42) and the first fastening member (42) to restrain the movement of the lifting / lowering cord (18). A stopper device (21) having a second fastening member (44) movable between a position at which the lifting cord (18) is released and a position at which the lifting cord (18) is not restrained, and the head box (12). A stopper release cord (56) for separating the second fastening member (44) from the first fastening member (42) by operating one end derived from the head box (44). 12) A descending speed reduction device (46) for reducing the distance that the second fastening member (42) separates from the first fastening member (42) with respect to the operation amount of the stopper release cord (56). , 70) are provided. 2. The lowering speed reduction device (46) includes a first disk member (50) having a disk shape and rotatably provided in the head box (12), and the first circle. The other end of the stopper release cord (56) is provided so as to rotate integrally with the plate member (50) concentrically and has a disk shape larger in diameter than the first disk member (50). A second disk member (52) to which (56b) is connected so as to be able to be wound and unwound; and one end (54a) is connected to a second fastening member (44) of the stopper device (21). An end (54b) having a connection cord (54) wound around the first disc member (50) so as to be wound and unwound, wherein the stopper release cord (56) is provided on the second disc member. When unwinding from (52), the connection cord (5
4) is wound around the first disk member (50),
The blind according to claim 1, wherein a fastening member (44) is configured to be spaced apart from the first fastening member (42). 3. The lowering speed reduction device (70) includes a first disk member (50) having a disk shape and rotatably provided in the head box (12), and the first circle. A second disk member (52) provided so as to rotate integrally and concentrically with the plate member (50) and having a disk-like shape larger in diameter than the first disk member (50); The second fastening member (4) of the stopper device (21)
4) and the other end is connected to the first disk member (5).
0) a first connecting cord (72) wound around the head box (12) so as to be able to be wound and unwound, provided in the head box (12), and movable in a longitudinal direction of the head box (12);
A pulley device (60) around which the stopper releasing cord (56) whose other end (56b) is fixed in the head box (12) is wound, and one end is attached to the second disk member (52). A second connecting cord (68) connected to the pulley device (60) at the other end so as to be able to be wound and unwound, and one end of the stopper releasing code (56). When pulled down, the pulley device (60) moves and the second
The connection cord (68) is unwound from the second disc member (52), and the first connection cord (72) is wound around the first disc member (50) to be connected to the second fastening member (52). Blind according to claim 1, wherein 44) is configured to be spaced from the first fastening member (42). 4. The first fastening member (44) is connected to the first fastening member (44).
The downward speed reduction device (46) is always urged by the elastic member (25) in the direction of fastening with the fastening member (42). The blind according to claim 2, wherein a spring member (80) is provided for urging the (52) in the direction of winding.