JP2011256556A - Release mechanism of magnet lock in screen device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a release mechanism of a magnet lock enabling a movable stile to easily separate from a receiving frame against magnetic force even if the magnet force of a magnet for attracting the movable stile to the receiving frame of a screen device is increased.SOLUTION: In a screen device in which an energizing force is applied to a movable stile 8 attached to an end of a screen 10 in a storing direction of the screen to attract and hold the movable stile to a receiving frame 3 by means of a magnet 16, an attraction release member 20 which makes the movable stile separate from the receiving frame against attracting force of the magnet is attached to the movable stile 8. The attraction release member is attached to the movable stile to be turnable by a pivot 26, and has a an operation part 21 for manual turning and a pressing protrusion 22 which presses a part of the receiving frame by turning the operation part to make the movable stile separate from the receiving frame. The operation part is made longer than the pressing protrusion 22, which enables a magnet lock to be easily released using the principle of leverage.

Description

  The present invention relates to a screen device for a building opening or the like in which a biasing force in the storage direction of the screen is applied to a movable rod attached to one end of the screen. The present invention relates to a release mechanism for a magnet lock that allows the movable rod to be easily detached from a receiving frame when the screen is stored when the screen is held in a tensioned state.

  In a screen device such as a roll screen door equipped with a vertical pulling or horizontal pulling automatic winding mechanism, a movable rod attached to one end of the screen is attracted and held to a receiving frame by a magnet when the screen is stretched. The thing is very generally known from, for example, Patent Document 1. In such a configuration in which the screen is held in the tensioned state by the suction of the movable rod by the magnet lock mechanism, normally, when the screen in the tensioned state is put in the retracted state, the force of the operator's hand is required. The screen is automatically wound by the automatic winding mechanism by releasing the movable hook from the magnet and releasing the hand from the movable hook.

  However, if this screen device is installed in a well-opened building opening, etc., the movable cage that is magnet-locked may be detached from the receiving frame by the force of the wind acting on the screen. Inadvertently, the screen is automatically wound by the automatic winding mechanism. In order to prevent this, it is only necessary to increase the magnetic force of the magnet for attracting the movable rod to the receiving frame. However, when the magnetic force is increased, a large force is required to separate the movable rod from the frame in order to store the screen. Becomes necessary, making it difficult for the weak to operate.

JP 2005-307559 A

The technical problem of the present invention is to increase the magnetic force of the magnet for attracting the movable rod to the receiving frame of the screen device, and the movable rod that is magnet-locked by the force of the wind acting on the screen is detached from the receiving frame. In order to remove the movable rod from the receiving frame to store the screen, it is possible to easily remove the movable rod from the receiving frame against the magnetic force of the magnet without requiring a large force when removing it from the frame. Another object of the present invention is to provide a magnet lock release mechanism.
Another technical problem of the present invention is to provide a magnet lock releasing mechanism in the screen device as having excellent operability.

  In order to solve the above-described problems, according to the present invention, a biasing force in the storage direction of the screen is applied to the movable rod attached to one end of the screen, and the movable rod is held when the screen is held in a stretched state. In the screen device that is attracted and held to the receiving frame by a magnet, the screen is attached to the opening / closing operation position of the movable rod so as to be rotatable by a rotating shaft, and the operation unit for manual rotation and the operation of the operation unit A suction release member having a pressing convex portion that abuts a part of the receiving frame by rotation and presses the receiving frame to receive the movable rod against the magnet's attraction force and separates it from the frame; The length from the rotation center to the operation portion is formed longer than the distance between the contact portion of the tip of the tip to the receiving frame and the rotation center of the rotation shaft of the suction release member. To the screen device Magnet lock release mechanism is provided that.

  In a preferred embodiment of the release mechanism of the magnet lock according to the present invention, a part of the receiving frame is pressed by the pressing convex portion of the suction release member by the rotation of the operation portion of the suction release member, and thereby movable. The operation direction of the operation unit for separating the scissors from the receiving frame is configured to be a pressing direction when the screen is stored by the movable scissors, and the suction release member itself is the weight of the operation unit. Thus, it is desirable that the weight is distributed so that the pressing convex portion is held at the return position away from the receiving frame, and the pressing convex portion is rotatably supported by the rotating shaft.

  The screen device of the present invention having a magnet lock releasing mechanism having the above-described configuration is a screen device such as a roll screen door having a vertical pulling or horizontal pulling automatic winding mechanism, or a screen folded in a pleat shape by horizontal pulling. The present invention can be applied to a screen device that can be automatically stored by an urging force of a spring or a weight. When the screen is wound or folded from the state where the screen is stretched at the opening of the building, the operation portion of the handle-like suction release member may be pressed in the direction of storing the screen. Since the pressing convex portion of the suction release member provided on the pressing portion presses a part of the receiving frame, the movable rod attracted to the receiving frame receives the reaction force received by the pressing member from the receiving frame side and the operator's pressing force. Is pressed in a direction away from the receiving frame by the force applied to the operation portion of the suction release member, and once detached from the receiving frame, the screen is stored by the biasing force in the storing direction acting on the movable rod. . In addition, the distance from the rotation center to the operation portion is increased with respect to the distance between the contact portion of the tip of the pressing convex portion with the receiving frame and the rotation center of the rotation shaft of the suction release member. Therefore, the force applied to the operation unit is reduced by the lever principle.

  According to the magnet lock releasing mechanism of the present invention described in detail above, the magnetic force of the magnet for attracting the movable rod to the receiving frame of the screen device is increased, and the magnet is locked by the force of the wind acting on the screen. While preventing the movable rod from detaching from the receiving frame, the movable rod is resisted against the magnetic force of the magnet without requiring a large force when removing the movable rod from the receiving frame to store the screen. The screen can be easily detached from the receiving frame, and the magnet lock releasing mechanism in the screen device can be provided with excellent operability.

It is a front view which shows a part of 1st Example of the screen apparatus provided with the cancellation | release mechanism of the magnet lock based on this invention by a cross section. It is a horizontal sectional view of the screen device of the embodiment. It is an enlarged horizontal sectional view of a receiving frame and a movable rod showing the configuration of the magnet lock releasing mechanism in the embodiment. It is a principal part expansion perspective view for demonstrating operation of the release mechanism of the magnet lock in the said screen apparatus. It is a principal part expansion perspective view which shows the cancellation | release state of the same magnet lock. It is a principal part expansion perspective view which shows the state which cancels | releases the same magnet lock and a movable rod moves away from a receiving frame. FIG. 5 is an enlarged horizontal sectional view of a receiving frame and a movable rod at the same position as in FIG. 3 showing a second embodiment in which an adsorption releasing member of a magnet lock releasing mechanism is provided only on the indoor surface side of the screen device.

  FIGS. 1-6 has shown 1st Example of the screen apparatus provided with the cancellation | release mechanism of the magnet lock based on this invention. This screen device is mainly installed at the opening of a building and is used for insect protection, blindfolding, light shielding, heat insulation, etc. Basically, a screen device such as a roll screen door equipped with an automatic winding mechanism for vertical or horizontal pulling. Alternatively, it can be implemented as a screen device that can automatically store a screen that is folded in a pleat shape by lateral pulling with an urging force of a spring or weight, but here, it has an automatic winding mechanism for horizontal pulling An embodiment applied to a roll screen door, that is, a roll screen door that winds the screen in a horizontal pulling manner by a biasing force of a winding spring housed in a winding shaft of a screen (insect-proof net) will be described.

  The screen device shown in FIGS. 1 and 2 includes a winding box 2 that forms one vertical frame, a receiving frame 3 that forms the other vertical frame facing the winding box 2, and those winding boxes 2. The screen frame 1 is formed by upper and lower horizontal frames 4 and 5 that connect the upper and lower ends of the receiving frame 3 with corner members 6 and 7, respectively. The winding box 2 includes a winding shaft 11 that is rotatably supported by the upper and lower corner members 6 and 7 and winds the screen 10, and the winding shaft 11 houses a winding spring 12 therein. The rotational force in the direction of winding the screen 10 is applied to the winding shaft 11 by the urging force of the winding spring 12, so that the screen 10 is not restrained by a magnet lock mechanism 15 described later. An automatic winding mechanism for automatically winding the screen 10 is configured.

  The screen 10 is provided with a movable rod 8 for opening / closing operation at the tip derived from the winding shaft 11. Therefore, the winding spring 12 inside the winding shaft 11 applies a biasing force in the storage direction of the screen 10 to the movable rod 8. In FIGS. 1 and 2, the state in which the movable rod 8 is in an intermediate position of opening and closing and the state in which the movable lock 8 is attracted and held by the magnet lock mechanism 15 are shown. The upper and lower ends of the movable rod 8 are slidably guided by the upper and lower horizontal frames 4 and 5, and as can be seen from FIGS. An operation groove 8a is recessed along the longitudinal direction, and in order to attach the tip of the screen 10 to the movable rod 8, the tip of the screen 10 is interposed between the groove bottoms of the operation grooves 8a and 8a on the front and back sides. A locking groove 8b is provided for elastically fitting and locking the locking piece 10a attached thereto.

  When the screen 10 is held in a stretched state, the movable rod 8 is attracted and held by the magnet 16 constituting the magnet lock mechanism 15 to the receiving frame 3. A magnet 16 is attached, and on the other hand, the abutment surface that abuts the receiving frame 3 when the screen 10 is stretched in the movable rod 8 is attracted to the magnet 16 so as to correspond to the mounting position of the magnet 16 in the receiving frame 3. An iron-based magnetic piece 17 is fixed with a screw 18. In the embodiment shown in FIG. 1, the two magnets 16 are attached to the upper and lower sides of the receiving frame 3, and the magnetic pieces 17 are attached to the positions of the movable rod 8 facing each other. The number of the magnets 16 and the magnetic pieces 17 are not limited to those, and the magnets 16 and the magnetic pieces 17 may be attached to the movable rod 8 and the receiving frame 3 in reverse.

  In order to prevent the movable rod 8 attracted and held by the magnet 16 with respect to the receiving frame 3 by the force of the wind or the like acting on the screen 10, the adsorption of the movable rod 8 is prevented. When the magnetic force of the magnet 16 is increased, a large force is required to hold the movable rod 8 from the receiving frame 3 in order to store the screen 10, and the operability when the screen 10 is stored. Becomes a problem. In order to solve this problem, the screen device is provided with a suction release member 20 for allowing the movable rod 8 to be easily detached from the receiving frame 3 against the magnetic force of the magnet 16. The suction release member 20 is a handle-like member that is rotatably attached to the opening / closing operation position of the movable rod 8 by a rotary shaft 26, and is provided on both the front and back sides of the screen device, as shown in FIGS. In addition, the manual rotation operating unit 21 and the rotation of the operation unit 21 are brought into contact with a part of the receiving frame 3 and pressed against the attracting force of the magnet 16 by pressing the receiving frame 3. A pressing projection 22 for separating the movable rod 8 from the frame 3 is provided.

  Further, the suction release member 20 has the rotation center with respect to the distance between the contact portion of the tip of the pressing convex portion 22 with the receiving frame 3 and the rotation center of the rotation shaft 26 of the suction release member 20. To the operation portion 21 is formed long. Therefore, even if the force applied to the operation portion 21 is small due to the lever principle, the tip of the pressing convex portion 22 pushes the receiving frame 3 with a large force, and the reaction force causes the movable rod 8 to move away from the receiving frame 3 even slightly. By doing so, the attractive force between the magnet 16 and the magnetic piece 17 rapidly decreases according to the distance between the two, so that the movable rod 8 can be easily moved.

  Further, the suction release member 20 is configured such that when the operation portion 21 is manually operated, the pressing convex portion 22 presses a part of the receiving frame 3, whereby the movable rod 8 is separated from the frame 3. The operation direction is formed to be a pressing direction when the screen 10 is stored by the movable rod 8. Therefore, when the screen 10 is stored, the operation portion 21 of the suction release member 20 may be simply pressed until the movable rod 8 is separated from the receiving frame 3. On the other hand, when the screen 10 is stretched, the suction release is performed. What is necessary is just to hold the member 20 or the movable rod 8 itself and press it against the receiving frame 3 against the urging force of the winding spring 12.

  The suction release member 20 has a contact piece 23 that fits into an operation groove 8a that is recessed to manually open and close the movable rod 8 and sets the movable range of the suction release member 20, and a suction piece. A guide protrusion 24 that stabilizes the posture of the release member 20 itself is integrally formed. When the operation is not performed, the suction release member 20 is held at the return position as shown in FIGS. 4 and 6 by the weight of the operation unit 21. That is, the suction release member 20 is held at the operation unit 21. The operating portion 21 hangs down by rotating around the rotation shaft 26 due to the weight, and the abutting piece 23 comes into contact with the inner wall on the receiving frame 3 side of the operating groove 8a, so that the pressing convex portion 22 is separated from the receiving frame 3. Further, the contact piece 23 and the guide protrusion 24 constrain the rotation range of the suction release member 20 to rotate between the positions shown in FIGS. 4 and 5 and release the suction. When the member 20 is operated, the operation portion 21 is pushed toward the operation groove 8a side, so that excessive pressing in the direction is suppressed, and the suction release member 20 is assisted to rotate stably. .

  In the screen device having the above-described configuration, when the screen 10 is wound from a state in which the screen 10 is stretched at the opening of the building, the operation unit 21 of the handle-like suction release member 20 is pressed in the storage direction of the screen 10. The suction release member 20 may be rotated in the direction indicated by the arrow in FIG. 4, whereby the pressing convex portion 22 in the suction release member 20 provided on the movable rod 8 is received by the receiving frame 3 as shown in FIG. 5. The magnetic piece 17 of the movable rod 8 attracted to the magnet 16 of the receiving frame 3 is pressed by the reaction force received by the pressing convex portion 22 from the receiving frame 3 side and the operator's pressing. The magnetic piece 17 is pressed in the direction away from the receiving frame 3 by the force applied to the operation portion 21 of the suction release member 20 and once separated from the receiving frame 3, it moves in the storing direction acting on the movable rod 8. Screen 10 is wound around the winding shaft 11 in the take-up box 2 by the biasing force. When the hand is released from the suction release member 20, the suction release member 20 returns to the position shown in FIG.

  As is clear from FIG. 3, the suction release member 20 is attached to both ends of the rotary shaft 26 supported by the movable rod 8 so as to penetrate the screen, and a screen device is installed in a building opening where people can go in and out. Although the suction release member 20 can be operated from either the inside or outside of the room by installing the screen device in the case where the screen device is installed in a building opening or a wall where a person does not enter or exit, FIG. As shown in the second embodiment, the suction release member 20 may be attached to only one side of the movable rod 8. As can be seen from a comparison between FIG. 3 and FIG. 7, both can simply replace the rotating shaft 26 of the common movable rod 8 and attach the suction release member 20 to the required side, so that both sides or one side of the screen device can be easily obtained. It can be diverted to the operation from the side. In FIG. 7, the same reference numerals as those in FIG.

  In both the above embodiments, the screen device is described as a screen device such as a roll screen door equipped with a horizontal pulling automatic winding mechanism. However, as described above, the magnet lock release mechanism in this screen device is an automatic vertical pulling mechanism. The present invention can also be applied to a screen device such as a roll screen door equipped with a winding mechanism. In this case, the winding box 2 of the screen device shown in FIG. The screen 10 is suspended from the take-up shaft 11, and the magnetic piece 17 of the movable rod 8 is attracted and held by the magnet 16 of the receiving frame 3 provided on the lower side facing the winding box 2. The operation and operation of the suction release member 20 in this case are exactly the same as described above, except that the direction of the suction release member 20 changes.

3 Receiving frame 8 Movable rod 10 Screen 16 Magnet 20 Adsorption release member 21 Operation unit 22 Pressing convex portion 26 Rotating shaft

Claims (3)

A biasing force in the storage direction of the screen is applied to the movable rod attached to one end of the screen so that the movable rod is attracted and held by a magnet to the receiving frame when the screen is held in a stretched state. Screen device,
The movable rod is attached to an opening / closing operation position of the movable rod so as to be rotatable by a rotary shaft, and a manual rotation operation unit is brought into contact with a part of the receiving frame by rotation of the operation unit to press the receiving frame and An adsorption release member having a pressing protrusion that receives the movable rod against the magnet's adsorption force and separates it from the frame;
The length from the rotation center to the operation portion is formed longer than the distance between the contact portion of the tip of the pressing convex portion with the receiving frame and the rotation center of the rotation shaft of the suction release member. Yes,
A mechanism for releasing a magnet lock in a screen device.   The operation direction of the operation part for pressing a part of the receiving frame by the pressing convex part of the suction release member by rotation of the operation part in the suction release member and thereby moving the movable rod away from the frame, The magnet lock releasing mechanism in the screen device according to claim 1, wherein the pressing direction is when the screen is accommodated by the movable rod.   The suction release member itself is distributed in weight so that the pressing convex portion is held at a return position away from the receiving frame by the weight of the operation portion, and is supported rotatably by the rotating shaft. A release mechanism for a magnet lock in the screen device according to claim 1.

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