JPS6355595B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a slat opening/closing device for horizontal blinds;
In particular, the present invention relates to a slat opening/closing device for horizontal blinds that opens and closes a parallel group of slats separately into an upper half and a lower half.

Conventionally, as a slat opening/closing device for horizontal blinds of this type, parallel groups of slats are supported on separate sets of ladder cords on the upper and lower halves, and each of these ladder cords is connected to a separate slat rotating drum. The structure is such that the upper and lower halves of the parallel slat group are opened and closed separately by actuation, or the upper and lower halves of the parallel slat group are opened and closed in different states in advance. There is a known structure in which the opening and closing of the upper and lower halves of the parallel group of slats are reversed by using a ladder cord as shown in FIG. The former is essentially equivalent to installing blinds in two stages, upper and lower, and is complicated in structure and requires separate operations for the upper half parallel slat group and the lower half parallel parallel group, which is cumbersome. , the latter is simply the opening and closing of the upper and lower halves of the slat parallel group,
The specifications are uniformly limited.

Therefore, the present invention provides a method for opening and closing the slats of a horizontal blind, which can open and close the upper and lower halves of the parallel group of slats in different ways, both in the open state and both in the closed state, under a single operation similar to the conventional method. The idea is to provide the equipment.

The slat opening/closing device for horizontal blinds of the present invention supports horizontal slats in parallel in multiple stages in the vertical direction by at least one pair of ladder cords arranged in parallel on the left and right, and the leading and trailing parts of the ladder cords are connected to each other. In a horizontal blind in which the slats are rotated to open and close about their horizontal axis by moving up and down relative to each other, the slat drive shaft is provided with a first slat rotation drum in driving connection therewith, , remains stationary until the reverse rotation reaches a predetermined angle, and after reaching the predetermined angle, a second slat rotating drum, which is drivingly connected to the first slat rotating drum, is combined with the first slat rotating drum, and the front and rear parts of the ladder cord are The blind is provided with a leading cord that extends along the ladder cord, has a lower end fixed to the bottom bar of the blind, and is releasably integrated with the corresponding front and trailing portions of the ladder cord at arbitrary points. , the upper end of the leading cord is fixed to the first slat rotating drum, and the upper end of the ladder cord is fixed to the second slat rotating drum.

According to the present invention, the intermediate parts of the leading and trailing parts of the rudder cord and the leading cord are bound together at arbitrary points by suitable binding means, and in accordance with the conventional method, for example, the operating rod or the cord or the reversible motor. As the slat drive shaft is rotated, the first
The slat rotating drum rotates, and the leading and trailing parts of the leading cord move vertically relative to each other. In this case, the ladder cord below the point where the leading cord is tied and integrated moves the leading cord integrally, so the ladder cord moves downward (hereinafter referred to as the lower half side) by the joining point. The parallel group of slats (referred to as the upper half) are pivoted closed. (However, it is assumed that all slats are initially in the open state.) After the first slat rotating drum has rotated by a predetermined angle (generally an angle corresponding to the closing of the slats), continue rotating the drum. For example, a second slat pivot drum is drivingly connected to the first slat pivot drum and rotated by the first slat pivot drum, and the upper half rudder cord is actuated by the second slat pivot drum to rotate the upper half rudder cord. The parallel group of slats are also pivoted closed. In this case, since the parallel group of slats on the lower half side are already closed and rotation is prevented by mutual contact, the movement of the lower half side of the leading cord and the rudder cord due to the rotation of the first and second slat rotating drums. It will be lifted slightly.

When the first slat rotating drum is reversely rotated with all the slats closed, the leading and trailing parts of the lower half of the lead cord and rudder cord move in reverse, causing the slats on the lower half to be parallel to each other. The group is released.

When the counter-rotation of the first slat-swivel drum reaches a predetermined angle (generally the angle corresponding to the opening of the slats), it and the second slat-swivel drum are drivingly connected, and the first If the slat rotating drum is rotated in the opposite direction, the parallel group of slats on the upper half side will be opened and the parallel group of slats on the lower half side will be closed.

If the first slat rotating drum is rotated in the normal direction again from this state in which the upper parallel slat group is open and the lower parallel slat group is closed, the lower parallel slat group will open and all the slats will open again. It becomes open.

As described above, according to the present invention, the upper and lower halves of the parallel group of slats can be opened and closed in different manners under a single operation similar to the conventional method, such as by an operating rod, a cord, or a reversible motor. It can be used in a wide variety of specifications: , open state, and closed state.

Moreover, the part where the rudder cord and the leading cord are tied together can be released and any part can be selected, so the division ratio of the upper and lower halves of the parallel slat group can be adjusted to suit the surrounding situation at that time or to your preference. You can also change it freely.

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, 1 is the horizontal slat, 2 is the slat 1
At least one pair of left and right ladder cords supporting the slats in parallel in multiple stages in the vertical direction, 3 indicates a slat drive shaft, and the slat drive shaft 3
is rotated by operating the operating rod 4 in the same manner as in the conventional case. The rotation of the slat drive shaft 3 can also be achieved using other conventional methods, such as using an operating cord or a reversible motor.

The slat drive shaft 3 is provided with a first slat pivoting drum 5 in driving connection. In the case shown,
The driving connection is provided by making the shaft 3 rectangular and fitting the drum inner cavity 6 of a conforming shape. The first slat rotating drum 5 has an integral cylindrical portion 7, and a second slat rotating drum 8 is loosely fitted into the cylindrical portion 7 and assembled. 1st
The slat rotating drum 5 and the second slat rotating drum 8 have the drum 5 set at a predetermined angle (generally an angle corresponding to the horizontal state of the slat 1, i.e., the angle corresponding to the horizontal state, that is, the angle corresponding to the slat 1 being closed from being open, or being open from being closed). ,
Coupling means, such as protrusions 9 and 10 in contact with each other, provide a driving coupling between the drums 5 and 8 when reversely rotated.
will be established. The second slat pivot drum 8 is also in a loosely fitted relationship with the slat drive shaft 3.

The leading cord 11, which extends along the slat 1 of the rudder cord 2, extends along the front side of the group, i.e., the leading portion 2a, and the portion of the ladder cord 2, which extends along the rear side of the slat 1 group, i.e., the trailing portion 2b, are arranged at required locations. Then, the upper end side of the cord 11 is fixed to the first slat rotating drum 5. The lower end of the leading cord 11 is fixed to the bottom bar 12 of the blind. Also first move code 1
1 is the leading part 2a and the trailing part 2b of the ladder cord 2.
The slat horizontal support cord 2c extends over
It extends through guide rings 13 provided at the front and rear of the.

The upper end side of the ladder cord 2 is fixed to the second slat rotating drum 8. The lower end of the ladder cord 2 is fixed to the bottom bar 12.

Reference numeral 14 denotes a slat lifting cord, and the slats 1... parallel group are raised and lowered by operating the cord 14, as in the prior art.

Leading part 2 of ladder code 2 and leading code 11
a, 11a and the rear portions 2b, 11b are releasably bound together by a suitable means, for example, a stopper 15 such as a stopper having a structure similar to a piercing-type tie clip or a clip-type stopper. The binding location may be at any height.

The state in which all the slats 1 are opened is shown in FIGS. 1 and 4.

In this state, when the slat drive shaft 3 is driven in a desired direction and the first slat rotating drum 5 is rotated in the normal direction, the rudder cord 2 and the leading cord 11 are moved below the stopper 15, that is, in front of the ladder cord 2 and the leading cord 11 on the lower half side. Gyobu 2
While a, 11a moves upward, the trailing part 2b, 1
1b moves downward, and the parallel group of slats 1 in the lower half pivot around their horizontal axis and close (FIG. 5). At this time, since the second slat rotating drum 8 is in non-driving connection with the first slat rotating drum 5 and does not rotate, the slats 1 on the upper half side remain open.

When the first slat rotating drum 5 rotates forward to a predetermined angle, the protrusion 9 comes into contact with the protrusion 10,
The second slat-swivel drum 8 is in driving connection with the first slat-swivel drum 5. Therefore, if the first slat rotating drum 5 is further rotated in the normal direction,
This and the second slat rotating drum 8 rotate together, and the upper half of the ladder cord 2 is also operated by the rotation of the drum 8, thereby closing the parallel group of slats 1 on the upper half (see Fig. 6). ). At this time, the lower half side slats 1...parallel group contact each other in the previous closing,
Further closed turns are prevented. Therefore, as the first and second slat rotating drums 5 and 8 move forward, the parallel group of slats 1 on the lower half side tends to be lifted up a little along with the lower half side of the cord leading parts 2a and 11a, and still maintains the closed state. .

When the first slat rotating drum 5 is rotated in the reverse direction in the state shown in FIG.
The movement of the lower half of the first slat 1 opens the parallel group of slats 1 on the lower half (Fig. 7), and when the first slat rotating drum 5 rotates in the opposite direction, the protrusion 9 comes into contact with the protrusion 10. Drum 5 and second slat rotating drum 8
The slats 1 on the upper half side, which had previously been closed, rotate as one...The parallel group opens, and the slats 1 on the lower half side...
The parallel group closes (Figure 8).

When the first slat rotating drum 5 is rotated forward from the state shown in FIG. 8, the slats 1...parallel group on the lower half side are opened while the slats 1...parallel group on the upper half side are opened ( Figure 9).

The relationship between the operation, non-operation, and rotational direction of the drums 5 and 8 in each embodiment of the above parallel group of slats 1 is illustrated in duplicate above the drawings in FIGS. 5 to 9 of the corresponding embodiment. did. That is, among the drums 5 and 8 shown in these figures, the one that is operating is indicated by an arrow, and the direction of the arrow indicates the direction of rotation, with clockwise rotation being forward rotation and counterclockwise rotation being reverse rotation. It is.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figures are perspective views of the first slat rotating drum and the second slat rotating drum in the same embodiment, and the third slat rotating drum.
This figure is an separated perspective view of the same drum, and FIGS. 4 to 9 are explanatory views of the opening and closing of the slats and different modes. 1 is the slat, 2 is the ladder cord, 2a is the leading part of the ladder cord, 2b is the trailing part of the ladder cord, 3
is the slat drive shaft, 4 is the operating rod, and 5 is the first
8 is a second slat rotating drum, 9 and 10 are protrusions, 11 is a leading cord, 1 is a slat rotating drum;
1a is a leading cord leading portion, 11b is a trailing portion of a leading cord, and 14 is a blind bottom bar.

Claims (1)

[Claims] 1. Horizontal slats are supported vertically in parallel in multiple stages by at least one pair of ladder cords arranged in parallel on the left and right, and the leading and trailing parts of the ladder cords are relatively moved up and down to achieve the above-mentioned In a horizontal blind in which the slats are opened and closed by rotating them about their horizontal axis, the slat drive shaft is provided with a first slat rotation drum in driving connection with the slat drive shaft, and the first slat rotation drum is rotated in the forward and reverse directions until a predetermined angle is reached. A second slat rotating drum, which is stationary and is drivingly connected to the drum after reaching a predetermined angle, is combined with the first slat rotating drum, and extends along the leading and trailing parts of the ladder cord, and has a blind bottom end. The blind is provided with a leading cord which is fixed to the bottom bar of the ladder cord and whose arbitrary parts are releasably unified with the leading and trailing parts of the ladder cord, and the upper end side of the leading cord. A slat opening/closing device for a horizontal blind, characterized in that: is fixed to the first slat rotating drum, and the upper end side of the ladder cord is fixed to the second slat rotating drum.