JP2912143B2 - Blind lifting 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 lifting device.

[0002]

2. Description of the Related Art Conventional blind lifting and lowering devices include:
JP-A-61-43399 and JP-A-62-124
198 publication. That is, the blind lifting device disclosed in Japanese Utility Model Laid-Open Publication No. Sho 61-43399 is provided with a lifting code stopper device integrally provided inside a lifting code lead-out opening in an upper box (head box) of a horizontal blind. It is. That is,
The lifting / lowering cord stopper device has a pair of cord holding members arranged inside the lifting / lowering cord lead-out opening, and holds a plurality of lifting / lowering cords with the cord holding members to restrain the movement, and holds the lifting / lowering cords by separating the cord holding members. The attachment is released to make it movable. A lattice-shaped guide is provided in the elevating cord deriving opening so as to distribute a plurality of elevating cord deriving positions in a line substantially in a line direction sandwiched by the cord holding members. A cord stopper is provided on an elevating cord operating unit derived from the elevating cord deriving opening. 62-124198
In a blind lifting device disclosed in Japanese Patent Application Laid-Open Publication No. H10-115, a hollow box-shaped stopper body having a lifting code outlet on one side is fixed in a head box. That is, in the stopper main body, between the top surface and the bottom surface thereof, a guide roller capable of guiding an elevating cord introduced into the stopper main body is rotatably disposed. The elevating cord outlet is formed in a shape having a wide width in the lateral direction for guiding the elevating cord guided around the guide roller to the outside of the stopper body. In the stopper body, a code guide member for guiding the lifting code from the guide roller to the lifting code outlet is movably disposed. In addition, the stopper body engages with the rough surface that extends from near one end of the elevating cord outlet to near the guide roller and rolls, and is pressed against the guide roller at the inner end moving position to pinch the elevating cord. A locking roller for locking is rotatably attached to the code guide member. By swinging the elevating cord in the width direction of the elevating cord lead-out port, the position where the locking roller comes into contact with the rough surface is determined. A swing guide portion that guides the code guide member so as to swing between a position away from the surface and a swing guide portion is provided. A cord stopper is provided on the lifting cord operation unit derived from the lifting cord outlet.

[0003]

However, the above-mentioned conventional blind lifting / lowering apparatus has the following problems. That is, in the blind lifting and lowering device disclosed in Japanese Utility Model Laid-Open Publication No. 61-43399, since a grid-like guide is provided at the opening for leading out the lifting cord, when the blind is lowered to the lowest position, it is gathered near the cord stop. There is a possibility that the elevating cord, which is easily entangled afterwards, may be entangled in the lattice-shaped guide, which may hinder the elevating of the screen. In addition, 62-1
In the blind lifting and lowering device disclosed in Japanese Patent No. 24198, since the lifting and lowering cord outlet and the stopper body are provided integrally, if the lifting and lowering cord is entangled on the way when the blind is lowered, the entangled lifting and lowering cord is used. Is introduced into the lifting cord stopper device, so that the lifting cord which is not entangled is not locked by the stopper. As a result, the screen may drop,
There is a problem that the lifting cord stopper device may be broken. The present invention has been made to solve the above problems.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems by installing a lifting cord stopper device in a head box so that the distance between the lifting cord stopper device and the lifting cord lead-out port can be changed. That is, the blind lifting device according to the present invention includes a head box (10) and a head box (1).
0) a shielding material (12) having an upper end connected thereto, and a bottom rail (14) attached to a lower end of the shielding material (12).
And one end is connected to the bottom rail (14) and the other end is formed in the insertion hole (1) formed in the shielding material (12).
8) a lifting / lowering cord (16) which is liftably introduced into the head box (10) through the lifting / lowering cord outlet (28) formed near one end of the head box (10); (16) a lifting / lowering cord stopper device (20) capable of restricting the movement of the lifting / lowering cord stopper device (20). It is installed in a box (10). A member (56) may be provided between the lifting cord stopper device (20) and the lifting cord outlet (28) so that the lifting cords (16) can be separated one by one. In addition, the code | symbol in a parenthesis shows the corresponding member of an Example.

[0005]

When the number of lifting / lowering cords is large, the lifting / lowering cord stopper device is set apart from the lifting / lowering cord outlet. In this case, even if the bottom rail descends almost to the lowest position and the cord stopper approaches the elevating cord outlet, and the elevating cord near the cord stopper is intertwined, the elevating cord intertwined at the elevating cord outlet Is loosened before moving to the lifting cord stopper device. Thus, the entangled lifting cord is not introduced into the lifting cord stopper device. When the number of lifting cords is small, the lifting cord stopper device may be arranged close to the lifting cord outlet. In this case, even if the cord stopper approaches the elevating cord outlet and the elevating cord near the cord stopper becomes entangled, the entangled portion is relatively quickly loosened because the entangled portion is small. Thus, the entangled lifting cord is not introduced into the lifting cord stopper device. When a comb member is provided between the lifting cord stopper device and the lifting cord outlet, the entangled lifting cord is loosened before being introduced into the comb member, so that the entangled portion does not catch on the comb member.

[0006]

FIG. 1 is an overall view of a blind 11 to which the present invention is applied. A shielding material 12 is provided at the lower end of the head box 10.
The upper end is attached. A bottom rail 14 is attached to the lower end of the shielding member 12. One end of a lifting cord 16 is connected to the bottom rail 14 at a predetermined interval in the longitudinal direction thereof. The other end of each elevating cord 16 is introduced into the head box 10 through an insertion hole 18 formed in the shielding member 12, and passes through a cord guide 26 to near the right end of the head box 10 in FIG. 1. The head box 10 is guided horizontally, penetrates the lifting / lowering cord stopper device 20 capable of stopping the movement of the lifting / lowering cord 16, passes through the comb member 56 (see FIG. 2), and
It is led out from a lifting cord outlet 28 provided at the end. The code guide 26, the lifting / lowering cord stopper device 20, and the comb member 56 are removably installed in the head box 10. The end of the lifting cord 16 led out from the head box 10 is connected to a cord stopper 22. The cord stopper 22 is connected to one end of an operation cord 24 capable of operating the elevation cord 16, and the other end of the operation cord 24 is connected to a side end of the bottom rail 14.

FIGS. 2 and 3 show a portion from the position where the lifting / lowering cord stopper device 20 of the head box 10 is installed to the end of the lifting / lowering cord outlet 28 side. Elevating cord stopper device 20
Are the stopper case 30, the nipping roller 32, the moving frame 3
4, a switching member 36 and a holding member 38. The stopper case 30 is provided at one end thereof with a comb portion 40 in which irregularities are continuous in the width direction. As shown in FIG. 3, the comb portion 40 can separate the lifting cords 16 by inserting the lifting cords 16 one by one into the respective recesses thereof. On the bottom surface near the center in the longitudinal direction of the stopper case 30, a knurl portion 42 in which triangular irregularities are alternately continuous in the longitudinal direction of the stopper case 30.
Are formed. The unevenness of the knurl portion 42 can engage with the triangular unevenness formed on the outer peripheral surface of the sandwiching roller 32. A notch 44 is formed in the bottom surface of the stopper case 30 from its end to the end of the knurl 42. Also, FIG.
As shown in FIG. 2, the engaging element 46 is fitted so as to protrude downward from the upper surface thereof. The moving frame 34 crosses a support portion 48 that supports the switching member 36 so as to be movable in a direction orthogonal to the moving direction of the switching member 36, an arm portion 50 that rotatably supports the nipping roller 32, and ends of the both arm portions 50. And a winding portion 52 which can wind the elevating cord 16 along a curved surface formed on the lower surface. The moving frame 34 is provided in the stopper case 30 so that the support portion 48 is arranged on the comb portion 40 side and the arm portion 50 is arranged on the knurl portion 42 side. The unevenness of the nipping roller 32 is meshed with the unevenness of the knurled portion 42, and when it rotates, is guided by the knurled portion 42 and moves with the moving frame 34 in the longitudinal direction of the stopper case 30. The switching member 36 has a guide groove 54 formed on the surface thereof, and as shown in FIG.
Are located in An engagement element 46 is fitted in the guide groove 54 so as to guide the movement of the switching member 36. One end of the holding member 38 is rotatably attached to an end of the stopper case 30 on the side of the notch 44. The other end of the holding member 38 extends to the left end of the knurl portion 42 in FIG. When the nipping roller 32 is located at the other end of the nipping member 38, the nipping member 38 can pinch the elevating cord 16 therebetween to restrict the movement of the elevating cord 16. The lifting cord 16 is connected to the comb 4 of the stopper case 30.
From the 0 side, one by one is inserted into the concave portion of the comb portion 40 and introduced into the stopper case 30, passes through the upper surface of the stopper case 30 and the upper portion of the sandwiching roller 32, and is inserted under the curved portion 52 along the curved surface of the winding portion 52. Then, it is led out of the stopper case 30 at an angle slightly above the horizontal. In other words, the elevating cord 16 is not led out in the horizontal direction which is the tangent direction of the vertex of the curved portion of the winding portion 52, but is wound around the winding portion 52 slightly more than the vertex of the curved portion. Is derived. A comb member 56 is provided adjacent to the lifting / lowering cord stopper device 20 and closer to the lifting / lowering cord outlet 28. Like the comb portion 40 of the lifting cord stopper device 20, the comb member 56 is formed with concavities and convexities continuously in the width direction of the comb member 56. The code 16 can be separated. It is effective to install the comb member 56 when the number of the elevating cords 16 is large. The elevating cord 16 led out from the comb member 56 changes its angle along a guide roller 58 provided near the elevating cord outlet 28 in the head box 10 and is led out from the elevating cord outlet 28 to the outside. I have. In addition, the lifting / lowering cord stopper device 20 is formed so that an engaging element biased by a spring is fitted to the stopper case 30 so as to protrude upward from the lower surface of the stopper case 30, and the guide groove faces downward of the stopper case 30. The switching member may be arranged on the support portion 48. Further, the guide groove may be provided with a step portion for preventing the engagement element from returning backward and restricting the movement of the moving frame.

Next, the operation of this embodiment will be described.
In a state where the blind 11 is stopped, the holding roller 32 of the lifting / lowering cord stopper device 20 is located at the left end in FIG. 2 of the knurled portion 42, and holds the lifting / lowering cord 16 with the holding member 38. I have. Next, when the operation code 24 is pulled downward, the elevating code 16 moves rightward in FIG. Thereby, the sandwiching roller 32 rotates clockwise in FIG. 2, and after being guided by the knurl portion 42 and moving rightward in FIG. 2 together with the moving frame 34,
The notch 44 slips out of the knurled portion 42. When the nipping roller 32 is idling, the wrapping portion 52 is rubbed with the lifting cord 16 wrapped around the wrapping portion 52 as shown in FIG.
To move in the middle right direction, the moving frame 34 is
2 and moves rightward in FIG. As a result, the switching element 36 as well as the moving frame 34,
Move until a predetermined position is reached. When the engagement element 46 reaches a predetermined position of the guide groove 54, the movement of the switching member 36 to the right in FIG. 2 is restrained, so that the moving frame 34 can further move to the right in FIG. The movement of the moving frame 34 and the holding roller 32 stops. At this time, the lifting cord 16 is held between the holding roller 32 and the holding member 38.
The operation code 24 can be continued to be pulled down because the operation code 24 cannot be pinched. That is, the plurality of lifting / lowering cords 16 moving in the head box 10 are:
Each of the lift cord stopper devices 20 is separated into one by a comb portion 40, passes through the upper portion of the nipping roller 32 and the lower portion of the winding portion 52, and passes therethrough.
After being led out, it is again separated one by one by the comb member 56, guided by the guide rollers 58 to change the angle, and moved so as to be led out of the head box 10 from the elevating cord outlet 28. To go. As a result, the shielding material 12 rises. Next, when the operator pulls the hand pulling the operation cord 24, the lifting cord 16
Moves leftward in FIG. Since the lifting cord 16 is slightly wound on the surface of the winding portion 52 on the side opposite to the pinching roller 32 from the vertex of the curved portion, the friction with the lifting cord 16 causes a leftward movement in FIG. Moving. At this time, the nipping roller 32 moves to the left in FIG. Accordingly, the switching member 36 moves together with the moving frame 34 until the engagement element 46 reaches a predetermined position of the guide groove 54. The engaging element 46 is the guide groove 54
Is reached, the movement of the switching member 36 in the left direction in FIG. 2 is restricted, so that the moving frame 34 can no longer move in the left direction in FIG. 32 stops moving. At this time, since the nipping roller 32 is located in the notch portion 44, the lifting cord 16 is not nipped between the nipping roller 32 and the nipping member 38, and thus can freely move. As a result, the lifting code 1
6 continues to move leftward in FIG. 2 due to the weight of the bottom rail 14. That is, the part of the lifting cord 16 that is led out from the lifting / lowering cord outlet 28 is introduced from the lifting / lowering cord outlet 28 and guided by the guide rollers 58 to change the angle, and separated by the comb member 56 one by one. After that, the shield member 12 moves down while passing through the lifting cord stopper device 20. When the bottom rail 14 is lowered to a position close to the lowest position, the cord stopper 22 rises to the vicinity of the elevating cord outlet 28, so that the elevating cord 16 near the cord stopper 22 may be entangled. Since the distance to the member 56 is long, it is loosened during this time, and the entangled portion does not catch on the comb member 56. next,
When the operation code 24 is pulled downward again, the lifting code 16 moves rightward in FIG. Thereby, the winding portion 52
2 moves rightward in FIG. 2, so that the nipping roller 32 also moves rightward in FIG. At this time, the switching member 36 moves together with the moving frame 34 until the engagement element 46 reaches a predetermined position of the guide groove 54. When the engaging element 46 moves to a predetermined position of the guide groove 54, the moving frame 34 can no longer move rightward in FIG. In this state, since the operation code 24 can be lowered,
The shielding member 12 can be raised. Next, when the operator pulls the hand pulling the operation cord 24, the lifting cord 16 moves leftward in FIG.
As a result, the winding portion 52 moves to the left in FIG. 2, so that the nipping roller 32 also moves to the left in FIG. Accordingly, the switching member 36 also moves with the moving frame 34 until the engagement element 46 reaches a predetermined position of the guide groove 54. At this time, the nipping roller 32 initially moves to the left while idling the notch portion 44, and when it moves to the knurl portion 42, it moves to the left in FIG. 2 while being guided by this. When the engagement element 46 reaches a predetermined position of the guide groove 54, the switching member 36
Since the movement in the middle left direction is restricted, the moving frame 34 and the nipping roller 32 can no longer move leftward in FIG. 2, and the movement stops. That is, since the holding roller 32 is located at the end of the holding member 38,
The lifting cord 16 is sandwiched between the sandwiching roller 32 and the sandwiching member 38, and the movement is restricted. Therefore, the shielding member 12 stops halfway down.

In the above-described embodiment, the comb member 56 is provided between the lifting cord stopper device 20 and the lifting cord outlet 28. However, the present invention is not limited to this, and the lifting cord guide device of the lifting cord stopper device 20 is not limited to this. The structure in which the comb member 56 is removed without changing the installation interval from the outlet 28 may be adopted.

FIG. 4 shows a second embodiment. This has the same structure as that of the first embodiment, except that the comb member 56 of the first embodiment is removed and the lifting cord stopper device 20 is installed close to the lifting cord outlet 28. This is effective when the number of lifting codes 16 is small.
That is, if the number of the lifting cords 16 is small, the entangled portion is small and is loosened relatively quickly, so that the lifting cord stopper device 20 and the lifting cord outlet 2
This is because the lifting cord 16 is loosened before reaching the lifting cord stopper device 20 even if it is arranged closer to the lifting cord 8. The operation of this embodiment is the same as that of the first embodiment except for the portion of the comb member 56.

[0011]

According to the present invention, the lifting cord stopper device is installed in the head box so that the distance between the lifting cord stopper device and the lifting cord lead-out port can be changed. Since a long distance is required for the entangled parts to be loosened, the lifting cord stopper device is installed away from the lifting cord outlet, and when the number of lifting cords is small, these entangled parts are relatively short. The lifting cord stopper device can be installed close to the lifting cord outlet. By changing the position of the lifting / lowering cord stopper device according to the number of lifting / lowering cords, the entangled lifting / lowering cord is loosened before being introduced into the lifting / lowering cord stopper device, and thus the entangled lifting / lowering cord is introduced into the lifting / lowering code stopper device. Can be prevented. Further, since the comb portion can be set at a position where the entangled elevating cord can be loosened before being introduced into the comb portion, a comb member can be provided between the elevating cord stopper device and the elevating cord outlet. . As a result, the lifting cord is arranged in the horizontal direction by the comb portion and is introduced into the lifting cord stopper device. By the above, a part of the lifting cord is caught by the lifting cord stopper device and the comb member, and the screen falls down,
It is possible to prevent the entangled elevating cord from being introduced into the elevating cord stopper device and to break it.

[Brief description of the drawings]

FIG. 1 is an overall view of a blind embodying the present invention.

FIG. 2 is a diagram showing a portion from a lifting code stopper device to a lifting code outlet.

FIG. 3 is a front view of the portion in FIG. 2 inside the head box.

FIG. 4 is a diagram showing a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Head box 12 Shielding material 14 Bottom rail 16 Elevating cord 18 Insertion hole 20 Elevating cord stopper device 28 Elevating cord outlet

Claims (2)

(57) [Claims] 1. A head box (10), a shielding material (12) having an upper end connected to the head box (10), a bottom rail (14) attached to a lower end of the shielding material (12), and a bottom rail ( One end is connected to the head box (10) through an insertion hole (18) formed in the shielding material (12), and the other end is connected to the head box (10) in a vertically movable manner.
Elevating cord (16) derived from an elevating cord outlet (28) formed near one end of the head box (10).
And a lifting / lowering cord stopper device (20) capable of restraining movement of the lifting / lowering cord (16). A blind lifting / lowering device comprising: a lifting / lowering cord stopper device (20); A blind lifting device, which is installed in a head box (10) so as to be able to change an interval of the blind. 2. A lifting cord (16) is inserted between a lifting cord stopper device (20) and a lifting cord outlet (28).
The blind lifting device according to claim 1, wherein a separating member (56) is provided, which can be separated from each other.