JP3101013B2 - Balancer mechanism in blind shutter opening / closing 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 balancer mechanism capable of opening and closing a movable louver of a blind shutter lightly and securely.

[0002]

2. Description of the Related Art As a conventional device for opening and closing a movable louver of this kind, for example, Japanese Utility Model Laid-Open Nos. 60-28192, 60-63692, and 60-152795.
JP-A-61-25491, JP-A-2-2749
A technique disclosed in Japanese Patent Application Publication No. 5 (JP-A) No. 5 is known. The technology described in these publications discloses a technique in which a movable louver blade is rotatably connected to a support rod via a pin, and the movable louver blade is vertically movable along the support rod. The louver blade is opened and closed by loosely fitting a pin protruding from the corner of the louver blade, further interposing a coil spring between the operating rod and the lower frame, and moving the operating rod up and down. This is the technology configured as follows.

[0003]

However, the above-described technique has a simple structure as a whole, but is interposed between the lower surface of the operating rod and the lower frame in order to easily open and close the louver blade. Since the coil spring has a structure in which the operating rod is constantly pushed up, the biasing force of the coil spring is always transmitted to the rotary operating body via the operating rod and the connecting tool, thereby operating the operating body in one direction. However, there is a problem that the weight becomes heavy and the smoothness is lost. Furthermore, in this device,
There was a problem that a separate stopping device for stopping the operation body urging was required.

The balancer mechanism according to the present invention is a mechanism developed in view of the above-mentioned conventional problems. In particular, by using a specific link mechanism, the biasing force of a spring is changed to a rotational force, and By inserting a tie rod pin provided in the mechanism into a guide groove having a predetermined shape, the rotational force is stopped by the position of the tie rod pin moving in the guide groove, thereby canceling the urging force of the spring, thereby The present invention relates to a completely new technology for smooth operation of operation.

[0005]

The balancer mechanism according to the present invention is a technique which fundamentally improves on the above-mentioned conventional problems, and the gist of the present invention is to provide a slide bar having a slide groove and a lower guide groove, The plate-shaped tie rods are slidably mounted on fixed frames provided inside the vertical frame, respectively, and one end of a tie rod pin protruding from both sides of the tie rod is inserted into a lower guide groove of a slide bar. The other end of the tie rod pin is inserted into a guide groove formed in the fixed frame, and the louver cap is pivotally attached to the tie rod so that the fixed shaft pin protruding from the original end of the louver cap slides. After passing through the slide groove of the bar, it is pivotally attached to the fixed frame, and the movable louver is attached to the louver cap. In the apparatus, a spring is extended between a tie rod pin protruding from the plate-shaped tie rod and an upper portion of the fixed frame, and a lower guide groove of the slide bar into which the tie rod pin is inserted is formed in a key shape. This is a balancer mechanism in a blind shutter opening / closing device, characterized in that:

[0006]

According to the present invention, a slide bar and a tie rod are slidably mounted along a fixed frame provided on a vertical frame of a shutter, and the tie rod moves along a guide groove formed in the fixed frame. Since the tie rod pins projecting from the tie rods were inserted into the key type guide grooves provided on a part of the slide bar,
When sliding the slide bar along the fixed frame,
The tie rod can be moved along the locus of the shape of the guide groove by the link mechanism.

Further, since the spring is hung over the tie rod pin protruding from the plate-shaped tie rod and the upper portion of the fixed frame, the slide of the slide bar can be made light and smooth. In addition, since the tie rod pin is inserted into the key type guide groove provided at the lower part of the slide bar, the tie rod pin always urged by the spring is located at a predetermined position in the key type guide groove. When moved, the urging force of the spring can be stopped by the action of the key-shaped guide groove.

[0008]

FIG. 1 is a perspective view showing an essential part of a mechanism for opening and closing a louver cap holding a movable louver. FIG. 2 is a perspective view showing an embodiment of a balancer mechanism according to the present invention. FIG. 3 is a side view showing the assembled state, FIGS. 4 (A), (B), and (C) are explanatory views showing main parts of the configuration, and FIG. FIG. 6 is a perspective view showing a state in which
FIG. 7 is a side view of the state where the louver cap is opened horizontally, FIG.
Is a side view of a state where the louver cap is opened at a certain angle, FIG. 8 is a side view of a state immediately before the louver cap is completely collapsed, FIG. 9 is a side view of a state where the louver cap is completely collapsed, and FIG. FIG. 11 is a side view showing a state where the louver cap is locked, and FIG. 11 is an explanatory view showing a state where the louver is attached to the louver cap.

In FIGS. 1 and 2, reference numeral 1 denotes a fixed frame. The fixed frame 1 includes a substrate 1a and the substrate 1a.
The angle plate 1b is formed of an angle plate 1b standing upright and a standing plate 1c attached to the angle plate 1b back to back with a predetermined gap. Reference numeral 2 denotes a slide bar, which is attached so as to slide along the entire surface of the upright plate 1c of the fixed frame 1. A plurality of slide grooves 3 are formed in the slide bar 2 at a predetermined interval in a vertical direction, and a key-shaped lower guide groove 4 is formed below the slide grooves 3. A key-shaped first hook 5 is provided on the side surface of the slide bar 2 at a predetermined interval.

Next, reference numeral 6 denotes a tie rod, which is mounted between the angle plate 1b and the upright plate 1c of the fixed frame 1 so as to be slidable in the vertical and horizontal directions. A tie rod pin 7 projects from the lower side of the tie rod 6 in the front-rear direction, and the front side of the tie rod pin 7 is slidably inserted into the key-shaped lower guide groove 4 of the slide bar 2. Have been. The rear side of the tie rod pin 7 is inserted into an arc guide groove 8 formed in the angle plate 1b of the fixed frame 1. Therefore, when the slide bar 2 is slid up and down along the fixed frame 1, the tie rod 6 is connected to the two fulcrums of the louver cap via the tie rod pin 7, namely, the fixed shaft pin 13 and the shaft pin 14. Is configured to be able to swing up and down in an arc shape.

Reference numeral 9 denotes a louver cap that supports the end of the movable louver 10 of the rain door and has the function of opening and closing the movable louver 10. A groove 11 into which the end face of the movable louver 10 can be fitted is formed in a side surface of the louver cap 9, and a tip end of the louver cap 9 is engaged with the first hook 5 of the slide bar 2. Two hooks 12 are provided. The base end of the louver cap 9 is attached via a fixed shaft pin 13 so as to be able to swing through the slide groove 3 of the slide bar 2 and to the fixed frame 1. 14 is attached to the side surface of the tie rod 6.

Accordingly, when the slide bar 2 is slid up and down, as described above, the tie rod 6 draws a circular locus along the arc guide groove 8 and is attached to the slide bar 2 and the tie rod 6. Louver cap 9
Is configured to make a motion as shown in FIGS. 4 to 9 described later. In other words, the tip of the louver cap 9 together with the tie rod 6 keeps the whole horizontal, or tilts gradually or completely, while prescribes an arc-shaped trajectory. The first hook 5 of the slide bar 2 can be engaged with the first hook 5.

In the drawing, reference numeral 15 denotes a coil spring, one end of which is fixed to the tie rod pin 7 and the other end of the coil spring 15 projects from a predetermined position on the back side of the angle plate 1b of the fixed frame 1. Fixing pin 16
It is attached and fixed. Therefore, the tie rod 6 having the tie rod pin 7 and the slide bar 2 engaged with the tie rod pin 7 via the key-shaped lower guide groove 4 are:
Each is always urged upward by the action of the coil spring 15.

Since the balancer mechanism according to the present invention has the above-described structure, the tie rod 6 and the slide bar 2 can be lightly moved upward by the action of the coil spring 15 respectively. Accordingly, the louver cap 9 attached to the tie rod 6 and the slide bar 2 or the movable louver 10 supported by the louver cap 9 can be smoothly moved and opened and closed by the action of the coil spring 15 respectively.

Further, in the balancer mechanism, a key-shaped lower guide groove 4 is formed in the slide bar 2 and a tie rod pin 7 is inserted into the key-shaped lower guide groove 4, and the tie rod pin 7 is connected to the key-shaped lower guide groove. Since the slide bar 2 is slid, the tie rod pin 7 is moved to the key-shaped lower guide groove 4 because it is configured to slide in the guide groove 4.
While being inserted into the horizontal groove, the coil spring 1
5 exerts a rotational motion on the link mechanism composed of the tie rods 6 and the slide bar 2 to exert a force for constantly raising the tie rods 6 and the slide bar 2. Next, the slide bar 2 is moved downward so that the tie rod pin 7 is locked in the key-shaped lower guide groove 4.
In this case, the rotational force of the link mechanism is stopped and the urging force of the coil spring 15 is canceled out, so that the force for raising the tie rod 6 and the slide bar 2 does not work at all. , Slide bar 2
The force applied to the device for driving the motor can be reduced.

In assembling the shutter according to the present invention,
As shown in FIGS. 1, 3 and 9, the fixed frame 1, the slide bar 2,
The tie rod 6 and the louver cap 9 are assembled, and both ends of the movable louver 10 of the shutter can be fitted into the groove 11 of the louver cap 9 to assemble the louver cap 9.

Next, in opening and closing the movable louver 10, the lower end of the slide bar 2 urged by the coil spring 15 is gradually raised as shown in FIGS. , This slide bar 2
Tie rod 6 which is linked via tie rod pin 7
It is slid upward in an arc by the link mechanism. At this time, the tip of the louver cap 9 linked to the slide bar 2 and the tie rod 6 via the fixed shaft pin 13 and the shaft pin 14 is gradually raised, whereby the movable louver fixed to the louver cap 9 is moved. 10 can be opened gradually. In the state shown in FIG. 1, FIG. 4, or FIG. 9, the movable louver 10 can be kept substantially horizontal, and the shutter can be opened to the maximum.

When closing the movable louver 10, the tip of the louver cap 9 is gradually lowered by sliding the slide bar 2 downward, contrary to the above, and the movable louver 10 is gradually closed. I can do it. In the state shown in FIG. 9 and FIG. 10, the movable louver 10 can be kept substantially vertical and the shutter can be closed. Movable louver 10
Alternatively, when the louver cap 9 holding the louver cap is completely locked, as shown in FIGS. 3 and 10, the first hook 5 protruding from the slide bar 2 is protruded from the slide bar 2 by further lowering the slide bar 2 downward. Is engaged with the second hook 12 of the louver cap 9, whereby the movable louver 10 can be completely locked.

[0019]

Since the balancer mechanism according to the present invention has the above-described structure and operation, the slide bar and the tie rod are always urged in one direction by the coil spring, and these are always lightly and smoothly operated. I can do it. Also, the tie rod pin with the coil spring engaged
Since it was inserted into the key type guide groove provided on the slide bar,
By moving the tie rod pin to a predetermined position of the key type guide groove, the urging force of the coil spring can be offset, and thereby the force applied to the slide bar, the tie rod, or a device for driving these slide bars or tie rods can be eliminated. Has the characteristic that it can be rendered powerless.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of a mechanism for opening and closing a louver cap holding a movable louver.

FIG. 2 is an explanatory diagram showing components.

FIG. 3 is a side view showing an assembled state.

FIGS. 4A, 4B, and 4C are explanatory diagrams showing main parts of the respective structures.

FIG. 5 is a perspective view showing a state where the louver cap is tilted down and locked on a slide bar.

FIG. 6 is a side view showing a state where the louver cap is opened horizontally.

FIG. 7 is a side view showing a state where the louver cap is opened at a certain angle.

FIG. 8 is a side view showing a state immediately before the louver cap is completely collapsed.

FIG. 9 is a side view showing a state where the louver cap is completely lowered.

FIG. 10 is a side view in a state where the louver cap is locked.

FIG. 11 is an explanatory diagram of a state where a louver is attached to a louver cap.

[Explanation of symbols]

 Reference Signs List 1 fixed frame 1a substrate 1b angle plate 1c upright plate 2 slide bar 3 slide groove 4 lower guide groove 5 first hook 6 tie rod 7 tie rod pin 8 arc guide groove 9 louver cap 10 movable louver 11 groove 12 second hook 13 fixed shaft pin 14 Axis pin 15 Coil spring 16 Fixed pin 17 Vertical frame

Claims (1)

(57) [Claims] 1. A slide bar having a slide groove and a lower guide groove, and a plate-shaped tie rod are slidably mounted on fixed frames provided inside a vertical frame, respectively, and protrude from both side surfaces of the tie rod. Insert one end of the tie rod pin into the lower guide groove of the slide bar, insert the other end of the tie rod pin into the guide groove formed in the fixed frame, and pivotally attach the louver cap to the tie rod. At the same time, a fixed shaft pin protruding from the original end of the louver cap was passed through the slide groove of the slide bar, then pivotally mounted on a fixed frame, and a movable louver was further attached to the louver cap to assemble. In the blind opening and closing device, a spring is laid over the tie rod pin protruding from the plate-like tie rod and the upper portion of the fixed frame, and In balancer mechanism switchgear blind shutters that characterized in that tie rod pin constituted the lower guide groove of the slide bar which is inserted to form the hook-shaped.