JP3138602B2 - Blind stopper device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blind stopper device.

[0002]

2. Description of the Related Art A conventional blind stopper device is disclosed in Japanese Patent Application No. 6-29078 filed earlier by the present applicant. The blind stopper device shown in the figure includes a stopper case fixed to the head box, a code nozzle fixed to the stopper case, a code stopper provided on the stopper case so as to be relatively movable in the longitudinal direction thereof, and a cord stopper. The spring includes a spring that constantly presses the stopper in the direction of the code nozzle, and a stopper release cord that can move the code stopper in the longitudinal direction of the stopper case. The code stopper has a conical tip that can pinch the lifting cord immovably with the code nozzle. When the slat is lowered, the cord is released by pulling the stopper release cord and moving the cord stopper against the elastic force of the spring in a direction in which the distal end of the cord stopper is separated from the cord nozzle. When the slats are stopped, the pulling of the stopper release cord is stopped, and the cord stopper is moved by the elastic force of the spring in the direction in which the tip end thereof is fastened to the cord nozzle.

[0003]

However, the conventional blind stopper device has the following problems. That is, when the code stopper is pressed in the direction of the code nozzle by the spring, the code stopper may not move parallel to the case. In such a case, not all lifting cords may be pinched between the tip of the cord stopper and the code nozzle with an equal force. There is a problem that it may fall. Also, pulling the stopper release cord to release the fastening between the cord nozzle and the tip of the cord stopper and allowing the lifting cord to move, the slat descends due to the weight of the bottom rail and the slat, but it is particularly large. In the case of the blind described above, when the bottom rail is lowered from a position higher than a certain raised position to the lowermost end, there is a problem that a strong impact occurs. An object of the present invention is to solve such a problem.

[0004]

According to the present invention, a stopper device is provided with a code nozzle capable of moving a predetermined width in a longitudinal direction of a stopper case, and a first elastic body which constantly presses the code nozzle in the code stopper direction. This solves the above problem. That is, the blind stopper device of the present invention includes a head box (12) and a ladder cord (1).
6) a number of slats (1) supported in alignment by
0), 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 inserted through the row of slats (10). ) Having a plurality of lifting cords (18) introduced therein.
2) is disposed within the movement of the lifting cord (18) and restraint, elevation in operation of the stopper releasing cord (30)
Blind stopper to release the restraint of code (18)
In the apparatus , a stopper case (40) fixed to the head box (12) and a stopper case (40)
The code nozzle (42) provided to be relatively movable in the longitudinal direction and the stopper case (40) cannot be relatively rotated.
The stopper release cord (30) is provided so as to be relatively movable in the longitudinal direction, and one end of the stopper release cord (30) is connected thereto.
8) a code stopper (46) capable of restraining the movement, a first elastic body (41) that constantly presses the code nozzle (42) in the direction of the code stopper (46), and a code stopper (4).
6) a second elastic body (48) that constantly presses the cord nozzle (42) toward the cord nozzle (42) ;
A code nozzle stopper (44) for restricting movement in the direction of the topper (46) . In addition, the code | symbol in a parenthesis shows the corresponding member of an Example.

[0005]

When raising the slat, the lifting cord extending from the lower end of the rotary operation rod is pulled downward. As a result, the lifting cord is pulled toward one end of the head box, and the friction between the lifting cord and the code stopper causes the code stopper to move away from the code nozzle against the elastic force of the second elastic body. Accordingly, the force for pressing the first elastic body toward the other end of the head box is reduced, and the code nozzle moves with the code stopper by the elastic force of the first elastic body. Thereafter, the code nozzle comes into contact with the code nozzle stopper and further movement is regulated, so that the fastening between the code nozzle and the code stopper is released, and the force for pinching the elevating cord therebetween is reduced. . Thus, the lifting cord can be continuously pulled downward, so that the slat can be raised.

To stop the slat lifting, release the lifting cord. As a result, the force of pulling the lifting cord in one direction of the head box is released, and the lifting cord attempts to move in the code nozzle direction due to the weight of the slats and the bottom rail.
It is pressed in the direction of the code nozzle by the elastic force of the second elastic body. Therefore, the code nozzle is pressed toward the other end of the head box by the friction with the lifting cord and the code stopper, and moves toward the other end of the head box against the elastic force of the first elastic body. The first elastic body shrinks,
When the code nozzle stops, the code nozzle and the code stopper are fastened. At this time, the code nozzle is pressed in the direction of the code stopper by the elastic force of the first elastic body, and the code stopper is pressed in the direction of the code nozzle by the elastic force of the second elastic body. Even if they do not move in parallel, the code nozzle and the code stopper are fastened with equal force in all parts. Thus, the code nozzle and the code stopper can sandwich all the lifting / lowering cords with an equal force, so that the movement of all the lifting / lowering cords is reliably restrained. Therefore, the slat can be reliably stopped at a predetermined position without falling down.

When lowering the slat, hold the grip and pull the stopper release cord downward. As a result, the stopper releasing cord is pulled toward one end of the head box, so that the cord stopper to which the stopper releasing cord is connected moves toward the one end of the head box against the elastic force of the second elastic body. . Accordingly, the force for pressing the first elastic body toward the other end of the head box is released, so that the code nozzle is pressed toward the one end of the head box by the elastic force of the first elastic body, and the code nozzle and the cord nozzle are pressed. With the lifting cord held between the stopper and the stopper, the stopper moves together with the code stopper to a position where it comes into contact with the code nozzle stopper and stops. The code stopper moves toward one end of the head box until the second elastic body contracts even after the code nozzle stops, so that the fastening between the code nozzle and the code stopper is released. As a result, the lifting code cannot be pinched between the code nozzle and the code stopper, and the movement of the lifting code is free. For this reason, the slat descends by its own weight with the bottom rail. At this time, the elevating cord moves toward the other end of the head box, but when the elevating cord moves, friction between the elevating cord and the code nozzle causes a pressing force on the code nozzle toward the other end of the head box. Add. However, since the code nozzle is pressed toward the one end of the head box by the first elastic body, a force that is pushed back toward the one end of the head box by the code nozzle is applied to the elevating cord. Therefore, the lifting cord moves toward the other end of the head box while receiving some resistance from the code nozzle, so that the slats and the bottom rail slowly descend. Therefore, the impact when the slat descends to the lowermost end is reduced.

When stopping the lowering of the slat, release the grip. Accordingly, the force for pulling the stopper release cord toward one end of the head box is released, so that the cord stopper is pressed toward the code nozzle by the elastic force of the second elastic body. For this reason, the code nozzle is opposed to the elastic force of the first elastic body by the frictional force with the lifting / lowering cord moving toward the other end of the head box due to the weight of the slats and the bottom rail, and the cord stopper. Move toward the other end. When the first elastic body contracts and the code nozzle stops, the code nozzle and the code stopper are fastened. At this time, the code nozzle is pressed in the direction of the code stopper by the elastic force of the first elastic body, and the code stopper is pressed in the direction of the code nozzle by the elastic force of the second elastic body. Even if they do not move in parallel, the code nozzle and the code stopper are fastened with equal force in all parts. Thus, the code nozzle and the code stopper can sandwich all the lifting / lowering cords with an equal force, so that the movement of all the lifting / lowering cords is reliably restrained. Therefore, the slat can be reliably stopped at a predetermined position without falling down.

[0009]

1 shows a blind embodying the present invention.
A plurality of slats 10 are arranged at predetermined intervals in the vertical direction.
2 are arranged, and the bottom rail 14 is arranged on the lower end side. A ladder cord 16 is provided between the head box 12 and the bottom rail 14 to support each slat 10. The upper end of the ladder cord 16 is connected to a rotating drum 17 rotatably provided in the head box 12 so as to be wound and unwound. By the rotation of the rotary drum 17, the inclination angle of the slat 10 can be changed. At one end of the head box 12, a hollow tilter input shaft 22 is led out. At the lower end of the tilter input shaft 22, a hollow rotary operation rod 24 provided with a hollow grip 32 at the lower end rotates integrally. It is connected as possible. The rotation of the rotation operation rod 24 is transmitted to a tilter 20 provided near one end of the head box 12 via a tilter input shaft 22. The rotation transmitted to the tilter 20 is transmitted to the rotary drum 17 that is integrally connected to the rotation via the rotary shaft 23. Lift code 18
Has one end connected to the bottom rail 14 and the other end inserted into an insertion hole (not shown) provided in the slat 10 to be introduced into the head box 12, and near one end in the head box 12. Through the stopper device 21 provided in the tilter input shaft 22 and the rotary operation rod 2
4 and the inside of the grip 32, respectively, and are connected to the knobs 26 arranged below the grip 32 so as to be able to move up and down. As will be described later, the stopper device 21 can restrict the movement of the lifting cord 18. Further, one end of a stopper releasing cord 30 capable of releasing the restraint of the lifting cord 18 is connected to the stopper device 21. The other end of the stopper release cord 30 is connected to the grip 32 through the tilter input shaft 22 and the rotation operation rod 24. A cord hook 3 on which a lifting cord 18 derived from the lower end thereof can be hooked is attached to the rotary operation rod 24.
4 are provided.

FIG. 2 is an exploded perspective view of the stopper device 21. The stopper device 21 includes a stopper case 40, a first spring (first elastic body) 41, a code nozzle 42, a code nozzle stopper 44, a code stopper 46, a second spring (second elastic body) 48, and a code stopper stopper 50. Have been. The stopper case 40 has a substantially rectangular parallelepiped shape with an open upper part, and a ridge 40a is formed inside each of the side edges of both side walls except for the vicinity of the right end in FIG. . Further, the protrusion 40a is formed with a retaining piece 40b projecting further inward from the predetermined position in the length direction to the right end in FIG. Engagement holes 40c are formed near the right ends in FIG. 2 of both side walls of the stopper case 40, respectively, adjacent to the ridges 40a. Further, on the bottom surface of the stopper case 40 at the same position in the longitudinal direction as the engagement hole 40c, two hole portions 40d are formed (one position is not shown).
A code nozzle support hole 40e that supports the code nozzle 42 so as to be movable in the axial direction is formed at the left end in FIG. 2 of the stopper case 40. Also, the stopper case 40
Further, a restriction hole 40f having a smaller diameter than the code nozzle support hole 40e is formed closer to the left end portion in FIG. 2 than the code nozzle support hole 40e. The first spring 41 has a helical shape, and can be fitted to the code nozzle support hole 40 e of the stopper case 40. The code nozzle 42 is connected to the code nozzle support hole 4 of the stopper case 40.
0e and a large-diameter portion 42b
And, it consists of. A nozzle hole 42c through which the elevating cord 18 can be inserted and into which a conical tip portion 46b of a cord stopper 46 is inserted and which can be tightened with the same is formed in the inner diameter portion of the code nozzle 42. The code nozzle stopper 44 is formed with a substantially “U” -shaped cutout portion 44d. On the bottom surface of the code nozzle stopper 44, a protrusion 44a that can be fitted into a hole (not shown) formed on the bottom surface of the stopper case 40 is formed. Protrusions 44b and 44c that can be respectively engaged with the protrusions 40a of the case 40 are formed. Cord stopper 4
Numeral 6 includes a bottom portion 46a of a substantially quadrangular prism and a conical tip portion 46b protruding from the bottom portion 46a. A guide groove 46c is formed on the outer peripheral surface of the distal end portion 46b at a predetermined interval in the circumferential direction from an end portion on the bottom 46a side to the distal end portion. The guide groove 46c can guide the movement of the lifting / lowering cord 18. In the bottom 46a, the guide groove 46 of the tip 46b is provided.
A lifting code insertion hole 46d through which the lifting code 18 can be inserted is formed at a position corresponding to c. Also,
As shown in FIG. 3, the cord stopper 46 has a first opening that extends from the bottom 46a to the outer peripheral surface of the tip 46b.
An insertion hole 46e and a second insertion hole 46f penetrating the bottom 46a at a position adjacent to the first insertion hole 46e of the distal end portion 46b.
And are respectively formed. The first insertion hole 46e and the second insertion hole 46f are respectively provided with the stopper release cords 3.
0 can be inserted. The second spring 48 has a rectangular material cross section, and the outline of the outer shape of the spring has a rectangular shape substantially the same size as the bottom 46 a of the cord stopper 46. The code stopper stopper 50 is almost
And a stopper case 40 at the end of each side wall.
Protrusions 50a and 50 that can be fitted into the hole 40d
b, the engaging holes 4 of the stopper case 40
Projections 50c and 50d that can be engaged with Oc are formed respectively.

The assembled stopper device 21 will be described with reference to a sectional view of the stopper device 21 shown in FIG. 3 and a side view inside the stopper case 40 shown in FIG. The first spring 41 is fitted into the code nozzle support hole 40e of the stopper case 40, and the left end of the first spring 41 in FIG. 3 contacts the right side surface of the restriction hole 40f in FIG. Movement in the middle left direction is restricted. The small-diameter portion 42 a of the code nozzle 42 is fitted in the code nozzle support hole 40 e of the stopper case 40 so as to be movable in the axial direction. Also, the code nozzle 42
The left side surface of the small diameter portion 42a in FIG.
3 and is constantly pressed to the right in FIG. 3 by the first spring 41. The code nozzle stopper 44 has its protruding portion 44a fitted into a hole (not shown) on the bottom surface of the stopper case 40,
The protruding portions 44b and 44c are respectively engaged with the grooves at the lower part of the ridge 40a of the stopper case 40. Accordingly, the large-diameter portion 42b of the code nozzle 42 is sandwiched between the code nozzle support hole 40e of the stopper case 40 and the code nozzle stopper 44, and the axial movement of the code nozzle 42 by a predetermined width or more is restricted. I have. The cord stopper 46 is inserted into the stopper case 40 so as to be movable in the longitudinal direction thereof, and the upward movement is restricted by the retaining piece 40b of the stopper case 40. Code stopper 46
Of the notch 44 of the code nozzle stopper 44
d through the nozzle hole 42c of the code nozzle 42. One end of the stopper release cord 30 is inserted into the first insertion hole 46e from the bottom 46a of the code stopper 46 in advance, and is led out from the outer peripheral surface of the distal end 46b.
a is led out to the side opposite to the side on which the tip end portion 46b is formed, and a knot (removal stopper) 70 is formed and connected so as not to come off from the cord stopper 46. Also,
5 and 6, the other end of the stopper releasing cord 30 is led out of the stopper case 40 through the internal space of the second spring 48 and the internal space of the cord stopper stopper 50. I have. The second spring 48 constantly presses the cord stopper 46 leftward in FIG. The cord stopper stopper 50 is such that its protruding portions 50a and 50b are respectively fitted in the hole portions 40d of the stopper case 40, and their protruding portions 50c and 50d are respectively engaged with the engaging holes 40c of the stopper case 40. Thereby, it is fixed to the stopper case 40. The cord spring stopper 50 is configured such that the second spring 48
3 from the right end in FIG. The other end of the lifting cord 18 is introduced into the stopper case 40 from the code nozzle support hole 40e of the stopper case 40, and as shown in FIGS.
Inner diameter portion of spring 41, nozzle hole 42c of code nozzle 42
After the notch 44d of the code nozzle stopper 44 is inserted, the guide hole 46d of the code stopper 46 guides the elevating cord insertion hole 46d to insert the inner space of the second spring 48 and the inner space of the code stopper stopper 50. It is led out of the stopper case 40 through. Lift code 18
Is fastened between the nozzle hole 42c of the code nozzle 42 pressed in the direction of the code stopper 46 by the first spring 41 and the distal end 46b of the code stopper 46 pressed in the direction of the code nozzle 42 by the second spring 48. The movement is restricted by being sandwiched between them.

Next, the operation of this embodiment will be described.
First, when raising the slat 10, the user lifts the lifting cord 18 extending from the knob 26 or the lower end of the grip 32 and pulls it downward. As a result, the lifting cord 18 is guided by the guide groove 46c of the cord stopper 46 and is pulled rightward in FIG. 3, so that the friction between the lifting cord 18 and the cord stopper 46 causes the cord stopper 46 to resilient the second spring 48. It moves rightward in FIG. 3 against the force. Thereby, the force for pressing the first spring 41 leftward in FIG. 3 is reduced, and the code nozzle 42 moves rightward in FIG. 3 together with the code stopper 46 by the elastic force of the first spring 41. Thereafter, the code nozzle 42
As shown in FIG. 4, the large-diameter portion 42b comes into contact with the code nozzle stopper 44 and further movement is restricted, so that the nozzle hole 42c of the code nozzle 42 and the distal end of the code stopper 46 are formed. 46b is released.
Therefore, the lifting cord 1 is moved between the nozzle hole 42c of the code nozzle 42 and the tip end 46b of the cord stopper 46.
Since the force for pinching the pin 8 becomes weak, the lifting cord 18 can be continuously pulled downward. Thereby, the slat 10 can be raised.

When stopping the slat 10 from rising,
Release the hand from the knob 26 or the lifting cord 18. Thereby, the force for pulling the lifting cord 18 rightward in FIG. 4 is released, so that the cord stopper 46 is
Is pressed in the direction of the code nozzle 42 by the elastic force of For this reason, the code nozzle 42 has a frictional force with the lifting cord 18 that moves leftward in FIG.
6b is pressed in the leftward direction in FIG.
It moves leftward in FIG. 4 against the elastic force of the spring 41.
When the first spring 41 contracts and the code nozzle 42 stops,
The code nozzle 42 and the code stopper 46 are fastened. At this time, the code nozzle 42 is pressed rightward in FIG. 3 by the elastic force of the first spring 41 and the code stopper 46 is pressed leftward in FIG. 3 by the elastic force of the second spring 48. Even if the stopper 46 does not move parallel to the stopper case 40,
The nozzle hole 42c of the code nozzle 42 and the distal end 46b of the code stopper 46 are fastened over the entire circumference with a uniform force. Accordingly, the code nozzle 42 and the code stopper 46 can sandwich all the lifting / lowering cords 18 with an equal force, so that the movement of the lifting / lowering cords 18 is reliably restrained. Therefore, the slat 10 can be reliably stopped at a predetermined position without falling down.

Next, when lowering the slat 10,
Hold the grip 32 and pull it down. As a result, the stopper release cord 30 moves rightward in FIG. 3, and the cord stopper 46 to which the cord is connected is
Against the elastic force of the second spring 48, the second spring 48 shown in FIG.
The spring 48 moves rightward in FIG. 3 to the contracted position and stops. At this time, since the force for pressing the first spring 41 leftward in FIG. 3 is released, the code nozzle 42 is pressed rightward in FIG. 4 by the elastic force of the first spring 41 and has a large diameter. With the elevating cord 18 sandwiched between the nozzle hole 42c and the tip end 46b of the cord stopper 46, the part 42b moves rightward in FIG. 4 with the cord stopper 46 until the part 42b contacts the cord nozzle stopper 44. And stop. Since the code stopper 46 moves slightly rightward in FIG. 4 even after the code nozzle 42 stops, the fastening between the nozzle hole 42c of the code nozzle 42 and the distal end 46b of the code stopper 46 is released. As a result, the force for pinching the lifting cord 18 between the nozzle hole 42c of the code nozzle 42 and the distal end 46b of the code stopper 46 is released, and the lifting cord 18 can be moved freely.
For this reason, the slat 10 descends due to its own weight between the slat 10 and the bottom rail 14, so that the lifting cord 18 is
Move in the middle left direction. At this time, the lifting code 18
4 moves to the left in FIG. 4 and tries to press the code nozzle 42 to the left in FIG. 4 by friction between the code nozzle and the code nozzle 42.
Is pressed rightward in FIG. 4 by the first spring 41, so that a force which is pushed back rightward in FIG. 4 by the code nozzle 42 is applied to the lifting cord 18. Therefore, the lifting cord 18 moves leftward in FIG. 4 while receiving some resistance from the code nozzle 42, and the slats 10 and the bottom rail 14 descend slowly. Therefore, the impact when the slat 10 descends to the lowermost end is reduced.

When stopping the lowering of the slat 10,
Release the grip 32. Thereby, the force for pulling the stopper release cord 30 rightward in FIG. 4 is released, and the cord stopper 46 is pressed toward the code nozzle 42 by the elastic force of the second spring 48. For this reason, the code nozzle 42 uses the weight of the slat 10 and the bottom rail 14 to move to the left in FIG. It moves leftward in FIG. 4 against the elastic force. When the first spring 41 contracts and the code nozzle 42 stops, the code nozzle 42 and the code stopper 46 are fastened. At this time, the code nozzle 42 is connected to the first spring 4
While being pushed rightward in FIG. 3 by the elastic force of 1,
Since the code stopper 46 is pressed to the left in FIG. 3 by the elastic force of the second spring 48, even if the code stopper 46 does not move parallel to the stopper case 40, the nozzle of the code nozzle 42 The hole 42c and the distal end 46b of the cord stopper 46 are fastened with uniform force over the entire circumference. Accordingly, the code nozzle 42 and the code stopper 46 can sandwich all the lifting / lowering cords 18 with an equal force, so that the movement of the lifting / lowering cords 18 is reliably restrained. Therefore, the slat 10
Can be reliably stopped at a predetermined position without falling down.

In the description of the above embodiment, the first
Although the first and second springs 41 and 48 are used as the second elastic body, the present invention is not limited to this, and an elastic body such as rubber may be used.

[0017]

According to the present invention, when the code nozzle and the code stopper are fastened, the code nozzle is pressed in the direction of the code stopper by the elastic force of the first elastic body, and the code stopper is moved to the second elastic position. The code nozzle is pressed in the direction of the code nozzle by the elastic force of the body, so even if the code stopper does not move parallel to the stopper case, the code nozzle and the code stopper are fastened with equal force in all parts Is done. Thus, the code nozzle and the code stopper can sandwich all the lifting / lowering cords with an equal force, so that the movement of all the lifting / lowering cords is reliably restrained. Therefore, the slat can be reliably stopped at a predetermined position without falling down. When the slat is lowered, the lifting cord moves while applying a pressing force in the slat descending direction to the code nozzle when it moves in the slat descending direction. As a result, a force that is pushed back in the direction opposite to the slat descending direction is applied by the code nozzle pressed by the cord nozzle, so that the code nozzle moves in the slat descending direction while receiving some resistance. Thereby, the slat and the bottom rail slowly descend, and the impact when the slat descends to the lowermost end is reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a blind embodying the present invention.

FIG. 2 is an exploded perspective view of a stopper device.

FIG. 3 is a sectional view of the stopper device at the time of fastening.

FIG. 4 is a sectional view of the stopper device at the time of release.

FIG. 5 is a side view of the inside of the stopper case at the time of fastening.

FIG. 6 is a side view of the inside of the stopper case at the time of release.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Slat 12 Head box 14 Bottom rail 16 Ladder code 18 Elevating cord 21 Stopper device 24 Rotating operation rod 30 Stopper releasing code 32 Grip 40 Stopper case 41 First spring (first elastic body) 42 Code nozzle 44 Code nozzle stop 46 Code Stopper 48 Second spring (second elastic body)

Claims (1)

(57) [Claims] 1. A head box (12), a number of slats (10) supported in alignment by a ladder cord (16), and a bottom rail (14) arranged at the lower end of a row of slats (10). One end is a bottom rail (14)
And a plurality of lifting cords (18), which are connected to the head box (12) through the row of slats (10) at the other end, are disposed in a blind head box (12), The movement of the lifting code (18) can be restricted , and the stopper release code (30) can be operated.
The blind stopper system for releasing the restraint of the lifting cord (18), a stopper case (40) fixed to said head box (12), a phase in the longitudinal direction the stopper case (40)
The code nozzle (42) provided to be movable with respect to the stopper case (40) is provided so as to be relatively non-rotatable and relatively movable in the longitudinal direction, and one end of the stopper release cord (30) is connected to the stopper case (40). A code stopper (46) capable of restricting the movement of the lifting code (18) between the code nozzle (42) and the code nozzle (4).
2) The first pressing which always presses in the direction of the cord stopper (46)
The elastic body (41) and the second elastic body (48) which constantly presses the cord stopper (46) in the direction of the cord nozzle (42).
And the code stopper (4 ) of the code nozzle (42).
6) Code nozzle stopper (44) for restricting movement in the direction
And a stopper device for a blind.