JPH044154Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] The invention comprises a pair of vertical link rows connected vertically by pivots on each side of a row of horizontal slats arranged vertically at regular intervals. A ladder-shaped link mechanism consisting of a large number of horizontal links that horizontally connect every other axis in each vertical link row is arranged, and the shafts protruding from each side edge of each slat are attached to the center of the horizontal links. , the upper end of the vertical link row of the link mechanism is attached to a rotating member rotated by an upper horizontal operating shaft, the slat is rotated by rotating the operating shaft, and the slat is rotated by rotating the operating shaft; This invention relates to a slat lifting and rotating device for a blind, in which the lower end of a lifting chain that is hoisted up and lowered is connected to the lower end of the link mechanism, and the slat is raised and lowered by hoisting and lowering the lifting chain. be.

This kind of blind slat lifting and rotating device can be used for regular blinds, but it is especially useful for attaching it outside the window and adding a storm door function and a security mechanism in addition to the normal sunlight shielding function. This device is suitable as a slat lifting and rotating device for an outside blind that is designed to be used as a slat lifting and rotating device.

[Background of the idea]

Blinds that are now widely used are usually constructed so that both the lifting and lowering and rotation of the slats are controlled by a single operating means such as an operating cord or a motor. For this purpose, outside blinds are also provided with ladder-shaped link mechanisms on both sides of the slats as described above, as well as elevating chains that extend and retract the link mechanisms up and down. The slat is moved up and down and rotated by rotating the slat.

However, in a typical blind, when a single operating means is operated, the slats are first rotated to a vertical position, and in this state, the slats are raised and lowered. However, in outside blinds, the edges of the slats are shaped so that they interlock with each other, such that when the slats are closed, i.e., rotated vertically, there is no gap between the edges of the slats, e.g. The cross section is almost arc-shaped,
A downward facing flange is formed on one edge, and a groove is formed on the other edge to fit with the flange on the slat located above the slat when the slat is vertically rotated. Slats are used so that raising and lowering the slats after rotating them vertically can cause the edges of the slats to interlock with each other, resulting in breakage or failure.
Therefore, in the outside blind,
A mechanism for regulating the rotation of the slat is provided so that the slat can be raised or lowered while the slat is horizontal or rotated at a certain angle, for example, 45 degrees. Such a slat rotation regulating mechanism is not particularly limited to outside blinds, but is also preferable for general blinds.

However, if the slat is lowered with its rotation restricted to a horizontal or diagonal position, after the slat has descended to its lowest position,
It is necessary to rotate the slat to the fully closed position, but in a mechanism in which both raising and lowering the slat and rotating it are performed by a single operating shaft, the slat reaches its lowest position and the slat is closed. When the descent is stopped, the rotation of the operating shaft is also stopped, and therefore the slat cannot be rotated either.
The slats cannot be rotated to a fully closed or vertical position.

[Purpose of invention]

The purpose of the present invention is that when the slat is rotated with the slat lowered to its lowest position, the lifting chain that raises and lowers the slat can be moved;
To provide a slat lifting and rotating device for a blind which can stop the slat lifting function and rotate the slat in a lowered state.

[Summary of the idea]

The blind slat lifting and lowering device according to the present invention includes a pair of vertical link rows connected vertically by a pivot on each side of a row of horizontal slats arranged vertically at regular intervals, and A ladder-shaped link mechanism consisting of a large number of horizontal links connecting every other pivot axis horizontally is arranged, and the shafts protruding from each side edge of each slat are respectively attached to the center of the horizontal links. The upper end of the vertical link row is attached to a rotating member rotated by an upper horizontal operating shaft, the slat is rotated by rotating the operating shaft, and winding and winding are performed by rotating the operating shaft. In a blind slat lifting and rotating device, the lower end of the lifting chain to be lowered is connected to the lower end of the link mechanism, and the slats are raised and lowered by hoisting and lowering the lifting chain. providing a connection mechanism having a first guide member having a long groove in an inclined direction and a second guide member having a long groove in a vertical direction and rotatably pivoted relative to the first guide member;
A stopper is provided on the descending line of the guide member in the side case housing the link mechanism, so that the lower end of the guide member comes into contact with the lower end of the guide member to stop the extension of the link mechanism when the slat is lowered to the lowest position, and the stopper is provided at the lower end of the lifting chain. The shaft pin is slidably engaged with the long grooves of the first and second guide members, and the long grooves are formed in the shaft attachment portions of the first guide member and the second guide member, except for their upper ends. This feature is characterized by the provision of a spring to prevent this from occurring.

[Example of idea]

Hereinafter, the present invention will be described in detail with reference to the drawings.

First, a slat lifting and rotating device for an outside blind will be described with reference to FIGS. 5 to 8.

In FIG. 5, reference numeral 1 indicates a head box of the blind, and reference numeral 2 indicates side cases arranged on both sides of the blind. A horizontal operating shaft 3 is disposed within the head box 1, and a rotating drum 4 is mounted on the horizontal operating shaft 3. The rotating drum 4 will be explained in detail later. A slat support link mechanism 5 is disposed within the side case 2 for raising, lowering, and rotating the slat. The link mechanism 5 consists of a pair of rows of vertical links 7 connected vertically by pivots 6, and a plurality of horizontal links 8 that horizontally connect every other pivot 6 in each vertical link row. a shaft 9 projecting horizontally from each side edge of the slat;
are each attached to the center of the horizontal link 8. The upper ends of the pair of vertical link rows are pivotally connected to the side surface of the rotating drum 4 by a pivot shaft 10 . Therefore, when the rotary drum 4 is rotated clockwise or counterclockwise in FIG. 5 by the operating shaft 3, the left and right vertical link rows 7 of the ladder-shaped link mechanism move relatively up and down and become horizontal. Link 8
The slats rotate accordingly.

In addition, a chain wheel 11 mounted on the operating shaft 3
The lower end of the lifting chain 12 (see FIG. 6), which is hoisted up and lowered by the rotation of the operating shaft 3, is connected to the lower end of the link mechanism 5, and the lifting chain 12 is hoisted and unwound. By lowering the link mechanism, the link mechanism is extended and contracted up and down, and the slat is raised and lowered.

As mentioned above, when the slat is raised or lowered, the slat is raised or lowered to a horizontal position or to an inclined position of, for example, 30 to 60 degrees, with its rotation restricted. Below, the mechanism for regulating the rotation of the slat in this way is shown in Figures 6-8.
The diagram will be explained.

In FIG. 6, the operating shaft 3 is rotated by a motor 13 in either forward or reverse directions. Operation axis 3
A driving drum 14 is fixed thereon, and the slat rotating drum 4 is externally engaged with the driving drum 14 so as to be rotatable thereon.
A clutch spring 15 is disposed inside the drive drum 14, and both ends of the clutch spring 15 protrude inward and have claws 15a,
15a (see FIG. 7). A fan-shaped protrusion 4a is integrally formed on the slat rotating drum 4, and this protrusion 4a is arranged inside the drive drum 14 between the claws 15a, 15a.

A slat rotation regulating member 16 is rotatably mounted on the operating shaft 3, and this rotation regulating member has a clutch spring pawl 15a, which is located inside the drive drum 14 and on the opposite side of the protrusion 4a of the rotary drum 4. 15
A protrusion 16a disposed between the protrusions 16a and 16a is integrally formed. The rotation of the rotation regulating member 16 is stopped from rotating as shown in FIG. 6 by an engaging pin 17 which is biased by the drum receiver 41 so as to protrude toward the rotation regulating member. In this state, the motor 13
When the drive drum 14 is rotated in the slat lowering direction, the drive drum 14 that is integrally rotatably engaged with the operating shaft 3 and the clutch spring 15 that is engaged inside the drive drum 14 is rotated in the slat lowering direction, and the protrusion 4a of the rotating drum 4 is rotated. The claws 15a of the clutch springs 15 come into contact with each other, causing the rotating drums 4 to rotate together in the same direction.
After rotating until the flange 4b of the fan piece formed at the base of the protruding part 4a contacts the side surface of the rotation regulating member 16 (for example, a position where the slat is rotated at an angle of 45°), the protruding part 16a of the rotation regulating member 16 The claw 15a of the clutch spring 15 comes into contact with the clutch spring 15, thereby loosening the clutch spring and stopping the rotating drum at that position, but the operating shaft 3 continues to rotate, while being fixedly attached to the operating shaft. The lifting chain 12 continues to move by the chain wheel 11 until the slat reaches a predetermined lowermost position. When the slat reaches the predetermined lowest position, the engagement pin 1 which restricts the rotation of the rotation regulating member 16 is released by the engagement pin release member which is fixedly attached to the lifting chain in advance.
7 is drawn into the drum receiver 41 and the rotation regulating member 16
Therefore, the projection 16b formed on the rotation regulating member 16 moves to the final end position of the slot 18 formed in the drum receiver, and the slat rotates to the vertical position.

The present invention provides a slat rotation mechanism that rotates the slat from the lowest position to the vertical position after the slat has descended to the lowest position at an angle of 45°, for example.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 4.

In the illustrated embodiment, a stop 20 is provided to stop the extension of the linkage 5 when the slat is lowered to its lowest position. However, when the link mechanism 5 hits the stopper 20, the lifting chain 12 is disconnected from the link mechanism 5, and the lifting chain 12 is moved via the connecting mechanism 21, which allows the lifting chain 12 to move further. The lower end of the chain 12 is connected to the lower end of the link mechanism 5.

In the illustrated embodiment, the above-mentioned coupling mechanism 21
consists of guide members 22a and 22b attached to the lowermost slat attachment hook. The guide members 22a and 22b each have a vertical long groove 23a and an inclined long groove 23b,
A shaft pin 24 attached to the lower end of the lifting chain 12 engages in the long grooves 23a, 23b. A spring 25 is applied to the guide members 22a, 22b, and the guide members 22a, 22b are normally held in the relative positions shown in FIG.
is retained.

When the slat is lowered by the lifting chain 12, the shaft pin 24 attached to the lower end of the lifting chain 12 is lowered to lower the slat. When the slat reaches its lowest position, the guide 22a comes into contact with the stopper 20, preventing the guide member from descending and stopping the slat from descending. Furthermore, when the operating shaft 3 is rotated in the direction of lowering the slat, the shaft pin 24
is pushed down, the guide member 22b is rotated as shown in FIG. 4, the long grooves 23a and 23b are aligned, and the shaft pin 24 is lowered within this long groove, thus,
The slat can be rotated to a predetermined vertical position.

When raising the slat from the fully closed state as described above, the motor 13 is rotated in the opposite direction.

The rotation regulating member 16 rotates to the right in FIG. 8, and rotates again to the position where it engages with the engagement pin 17. Thereafter, the motor drives the chain wheel 11 to rotate the lifting chain 12 to move the slat in the upward direction. It will be folded. During this operation in the upward direction, the clutch spring 15 is acted upon by the drive drum 14 in the direction of loosening, and the upward and downward operations become possible.

As mentioned above, when rotating the slat at its lowest position, the lifting and lowering and rotation are performed by the same operating shaft 3, so in conventional blinds, the slat can also be raised while the slat is rotating. accompanied, but
In this device, the rising portion of the slat is absorbed by the guide member attached to the lowest slat, thereby stopping the rising of the slat.
During this time, rotation of the slat takes place.

[Effect of idea]

According to the present invention, the following effects can be achieved.

According to the slat lifting and rotating device of the present invention, the slats can be lowered and raised horizontally or at an inclination of 30 to 60 degrees, so the slats do not come into contact with each other and are damaged. It can be advantageously used for blinds with specially shaped slats such as outside blinds.

When rotating the slat at its lowest position (fully closed), even if the lifting and lowering and rotation are performed using the same operating shaft, the lifting chain will not work while the slat is rotating, even if the lifting chain is operated. Since the guide member absorbs the action of the lifting chain, the slat is raised at a predetermined position. Since the slats can be rotated without moving downwards, a completely shielding type blind can be provided.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the blind slat lifting and rotating device according to the present invention;
The figure is a front view, Figures 3 and 4 are schematic diagrams showing its operation, Figure 5 is a schematic diagram showing the slat lifting and rotating device of the outside blind, and Figure 6 is the slat rotating drum of the outside blind. FIG. 7 is a sectional view taken along the - line in FIG. 6, and sectional views taken along the - line in FIGS. 8 and 6. 1...Head box, 2...Side case,
3... Operating shaft, 4... Rotating drum, 5... Slut support link mechanism, 6... Pivotal, 7... Vertical link, 8... Horizontal link, 9... Shaft, 10... Pivot, 11... Chain wheel, 12... Lifting chain, 13
... Motor, 14 ... Drive drum, 15 ... Clutch spring, 16 ... Slut rotation regulating member, 17
... Engagement pin, 18 ... Slot, 20 ... Stopper, 21 ... Connection mechanism, 22a, 22b ... Guide member, 23a, 23b ... Long groove, 24 ... Axis pin.

Claims (1)

[Scope of utility model registration request] On each side of a row of horizontal slats arranged vertically at regular intervals, there is a pair of vertical link rows connected vertically by a pivot, and one vertical link row in each vertical link row.
A ladder-shaped link mechanism consisting of a large number of horizontal links that horizontally connect the pivots of each slat is arranged, and the shafts protruding from each side edge of each slat are attached to the center of the horizontal links. The upper end of the vertical link row is attached to a rotating member rotated by an upper horizontal operating shaft, the slat is rotated by rotating the operating shaft, and the slats are hoisted and lowered by rotation of the operating shaft. In a blind slat lifting and rotating device, the lower end of the lifting chain is connected to the lower end of the link mechanism, and the slats are raised and lowered by winding up and lowering the lifting chain. A coupling mechanism is provided having a first guide member having a long groove in an inclined direction and a second guide member having a long groove in a vertical direction and rotatably attached to the first guide member, and the link A stopper is provided on the lowering line of the guide member in the side case that houses the mechanism, so that the lower end of the guide member comes into contact with the lower end of the link mechanism when the slat is lowered to the lowest position, stopping the extension of the link mechanism. is slidably engaged with the long grooves of the first and second guide members, and the respective long grooves do not overlap with the shaft attachment portions of the first guide member and the second guide member except for their upper ends. A device for lifting and lowering a slat of a blind and rotating it, characterized in that it is provided with a spring that regulates the movement.