JP2006225962A - Winding type screen device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding type screen device capable of engaging and disengaging an operating rail in the closed position of a screen with extremely simple constitution and having excellent operability. <P>SOLUTION: A locking mechanism for locking the operating rail 3 into the closed position of the screen is composed of a locking claw 8 projected into an initial position in a guide groove 7 from the front wall 7a side of a guide frame 5 toward the rear wall 7b side and capable of elastically advancing/retreating between the initial position and a retreat position on the front wall 7a side, and a locking part 9 provided at the upper end of the operating rail 3 and engaged with and disengaged from the locking claw 8. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a winding screen device for a building opening that can be opened and closed by winding the screen around a winding shaft and feeding it from the winding shaft, such as a roll type insect screen door and a blind. is there.

  As this type of screen device, the screen is wound around a winding shaft urged in the winding direction by a spring, and the operating rod attached to the tip of the screen and both side ends of the screen are opened and closed while being guided by a guide rail having a groove-shaped cross section. What you do is widely known. In such a screen device, in order to hold the operating rod and the screen in the closed position when the screen device is closed, various types of locking means are used. For example, as described in Patent Document 1 In addition, an approximately U-shaped engagement piece that is elastically clamped from both the front and rear sides of the operation rod is disposed inside each guide rail, and the operation rod is pushed into the engagement piece to thereby perform the operation. There is a configuration in which the end of the heel is clamped by an engagement piece, and the grip is released by pushing up the operating rod. Further, as described in Patent Document 2, a hook that faces the opening direction of the groove of the guide rail is disposed inside each guide rail, and elastically in the guide rail direction at both ends of the operation rod. Protruding stoppers are provided, and in the closed position of the screen, the hooks and the stoppers are engaged with each other to lock the operating rod, and the operating element disposed at the center of the operating rod is operated to stop the operating rod. There is also a configuration in which the hook is released from the hook and the stopper by releasing the hook toward the operating rod side to unlock the operating rod.

In any of the above configurations, the operating rod can be securely locked at the closed position of the screen, and there is no particular problem in terms of function, but in the former case, the operating rod is resistant to the elasticity of the locking piece during opening and closing operations. Thus, there is room for improvement in terms of operability because it is configured to be pushed into the locking piece or pulled out from the locking piece. On the other hand, in the latter case, there is a problem that the structure for locking the operating rod or the structure for releasing the lock is relatively complicated and expensive.
Japanese Utility Model Sho 63-122597 3-101798

  The technical problem of the present invention is to provide a winding screen device that can realize the engagement / disengagement of the operating rod in the closed position of the screen with a very simple configuration and is excellent in operability. is there.

  In order to solve the above problems, a winding screen device of the present invention includes a winding shaft for winding a screen, an operating rod attached to the tip of the screen, and both ends of the operating rod in the opening and closing direction. In a winding screen device having a pair of guide frames provided with guide grooves for guiding, and a locking mechanism for locking the operating rod to the closed position of the screen, the guide frames are opposed to each other. A front wall and a rear wall that form a guide groove, and the locking mechanism protrudes from the front wall side toward the rear wall side at an initial position in the guide groove, and a retracted position on the front wall side A locking claw that is elastically movable back and forth, and a locking portion that is provided at an end of the operating rod and that engages and disengages the locking claw. The locking claw once retracted to the retracted position side due to the contact of the heel The screen is kept closed by elastic return to the initial position side of the operating rod, and the closed state of the screen is maintained. During the opening operation, the operating rod is pressed toward the rear wall side. When the engagement between the pawl and the locking portion is released and the screen is wound around the winding shaft, the operation rod moves between the tip of the locking pawl in the initial position and the rear wall. It is configured to move in the winding shaft direction through a gap in the guide groove formed in the above.

In a preferred embodiment of the winding screen device of the present invention, the operating rod is provided so as to be tiltable between the front wall and the rear wall. In addition, stopper means is provided between the guide frame and the locking claw to limit the amount of protrusion of the locking claw into the guide groove.
Furthermore, in the present invention, the locking claw has a pressing portion on the winding shaft side that inclines in the closing operation direction from the front wall side to the rear wall side, The locking claw may be configured to be temporarily retracted to the retracted position side by contacting the pressing portion, and at that time, the locking portion of the operating rod rises inclined toward the front wall. The engaging claw has a second engaging portion that forms an acute angle with the pressing portion and inclines in substantially the same direction as the first engaging portion. The first engaging portion of the locking portion and the second engaging portion of the locking claw are elastically returned to the initial position side of the locking claw once retracted to the retracted position side during the closing operation. May be engaged so that the closed state of the screen is maintained.

According to such a winding screen device according to the present invention, the engagement and disengagement of the operating rod in the closed position of the screen is elastic between the initial position protruding into the guide groove and the retracted position on the front wall side. This can be realized by a very simple locking mechanism constituted by a locking claw provided so as to be able to advance and retreat and a locking part provided on the front wall side of the operating rod.
In addition, when the closing operation is performed, the operating hook is simply moved to the closed position of the screen so that the locking claw and the locking portion of the operating hook are engaged, and the operating hook is locked at that position. By simply pressing the operating rod in the locked state toward the rear wall side, the engagement between the locking claw and the locking portion is released, and with the winding of the screen around the winding shaft, The operation rod is configured to move in the winding shaft direction through a gap in the guide groove formed between the tip of the locking claw in the initial position and the rear wall. The engaging / disengaging operation itself is very simple and easy.

  As described above in detail, according to the winding screen device of the present invention, it is possible to realize the engagement / disengagement of the operating rod in the closed position of the screen with a very simple configuration. Moreover, the operation / disengagement operation of the operating rod is very simple, and the operability is excellent.

1 (a), 1 (b), 2 and 3 show an embodiment of a winding screen device according to the present invention. The screen device of this embodiment is rotatably supported. A winding box 1 having a winding shaft 1a formed therein, a screen 2 such as a screen door or blind that is wound around the winding shaft 1a with a base end portion fixed thereto, and attached to a distal end portion of the screen 2 The operating rod 3 is connected to the screen box at the upper end, and a pair of guide frames 4 and 5 for guiding the left and right ends of the operating rod 3 in the opening / closing direction, that is, the vertical direction, and the operating rod 3 at the closed position of the screen 2. And a locking mechanism for holding the screen 2 in a closed state.
And the said screen apparatus attaches the winding box 1 to the upper frame material of a building opening part frame, and attaches a pair of guide frames 4 and 5 to the mutually facing vertical frame material of this building opening part frame, respectively. It is designed to be attached to the building opening.

  Here, the winding shaft 1a is rotatably supported by bearings 1b and 1b provided at the left and right end portions in the winding box 1, and the winding shaft 1a is wound by a coil spring 1c. A take-up mechanism is built in, and when the screen 2 is unwound from the take-up shaft 1a by closing the operation rod 3, a rotational biasing force in the return direction (winding direction of the screen 2) is accumulated in the coil spring 1c. The screen 2 can be wound around the winding shaft 1a by using the coil spring 1c in which the rotational urging force is accumulated as a driving source.

  The operation rod 3 is provided with a first handle 3a for operation protruding forward at substantially the center in the vertical direction on the front surface side, and an operation suspended by a string or the like from below the handle 3a on the front surface side. For example, the first handle 3a can be used for the opening operation of the screen device, and the second handle 3b can be used for the closing operation. . Further, an elastically deformable contact member 3c is provided at the lower end of the operating rod 3 along its length direction, and the lower end of the operating rod 3 is the lower frame member when the screen device is closed. In the state where the operation rod 3 is locked at the closed position of the screen 2 by the locking mechanism, the bottom of the building opening frame is abutted and the bottom of the building opening frame is absorbed. A gap formed between the frame member and the operation rod 3 can be closed.

  The pair of guide frames 4 and 5 are provided with guide grooves 6 and 7 whose opening portions face each other, and the left and right ends of the operation rod 3 and the screen 2 are inserted into the guide grooves 6 and 7, respectively. Thus, it is guided in the opening / closing direction, that is, in the vertical direction. These guide grooves 6 and 7 have front walls 6a and 7a located on the front side of the screen 2, that is, on the operation surface side of the screen device, and rear walls 6b and 7b located on the back side of the screen. The front walls 6a and 7a and the rear walls 6b and 7b are formed so as to sandwich the left and right ends of the operation rod 3 and the screen 2 from the front and rear surfaces.

  The guide grooves 6 and 7 have a groove width that allows the operation rod 3 to be tilted at a predetermined angle in the front-rear direction between the front walls 6a and 7a and the rear walls 6b and 7b. Further, the bottom of each of the guide grooves 6 and 7 is provided with an engagement groove g along the opening / closing direction, that is, the vertical direction, and the engagement groove g is formed wider inside than the opening. ing. On the other hand, the screen 2 has engaging members 2a along the left and right edges. The engaging member 2a is formed wider than the opening of the engaging groove g and narrower than the inside of the engaging groove g, and is slidable in the engaging groove g. Is inserted.

  More specifically, in the guide frames 4 and 5, long inner rails 6 c and 7 c having engagement grooves g are loosely inserted into the bottoms of the guide grooves 6 and 7. In the guide grooves 6, 7, play is provided between the inner rails 6c, 7c and the front walls 6a, 7a and the rear walls 6b, 7b. The inner rails 6c, 7c In accordance with the movement in the surface direction of the screen 2 accompanying the above operation, the screen 2 can move freely within the range of play. However, the inner rails 6 c and 7 c are formed wider than the minimum width of the guide grooves 6 and 7, and are not pulled out from the guide grooves 6 and 7. On the other hand, the engaging member 2a is constituted by a large number of engaging elements arranged in a fastener shape so that the screen 2 can be smoothly wound around the winding shaft 1a.

  In this manner, the guide grooves 6 and 7 of the guide frames 4 and 5 are guided to the left and right ends of the operating rod 3, and the engagement grooves g of the inner rails 6c and 7c provided in the guide grooves 6 and 7 are provided. By guiding the left and right edges of the screen 2, the screen device can be opened and closed more stably and smoothly. At the same time, it is possible to more reliably prevent small insects or the like from entering the room through the gaps between the screen 2 and the guide frames 4 and 5.

The locking mechanism is inserted into the locking claw 8 provided on the lower end side in the guide groove 7 of one guide frame 5 of the guide frames 4 and 5 and the guide groove 7 of the operating rod 3. The locking portion 9 is provided at a guided portion, that is, an end portion on the guide frame 5 side of the operating rod 3 and engages with the locking claw 8 from below.
The locking claw 8 protrudes into the guide groove 7 from the front wall 7a side to the rear wall 7b side, and protrudes into the guide groove 7 (see FIGS. 5A and 5). (b) and FIGS. 6 (a) and 6 (b)) and a retracted position retracted toward the front wall 7a (see FIGS. 4 (a) and 4 (b)). Yes.
It should be noted that the initial position is the width of the groove required for the guide frame 5 side end portion (locking portion 9) of the operating rod 3 to pass through the guide groove 7 when the screen device is opened. The position is set in advance so as to remain between the tip of the claw 8 and the rear wall 7b.

If it demonstrates concretely, the said latching claw 8 is integrally provided in the front-end | tip of the flexible arm 10 which has the bending elasticity which stands | starts up from the lower end by the side of the front wall 7a in the guide frame 5. As shown in FIG. Then, when the arm 10 is elastically bent toward the front wall 7a with the fixed lower end as a fulcrum, the locking claw 8 provided at the tip of the arm 10 is between the initial position and the retracted position. It is possible to move forward and backward elastically. Here, the arm 10 is formed so that its thickness gradually increases toward the lower end in a side view, and is fixed in a state in which a part thereof protrudes into the guide groove 7.
In the present embodiment, a pair of upright walls 11 a and 11 b are provided on the front wall 7 a on the opening side of the guide groove 7 so as to project substantially parallel to the rear wall 7 b direction across the guide groove 7. The locking claw 8 and the arm 10 are disposed between the pair of standing walls 11a and 11b. Therefore, the locking claw 8 is guided by the pair of standing walls 11 a and 11 b and can reciprocate in a fixed direction across the guide groove 7.

Furthermore, the locking claw 8 has a pressing surface (pressing) inclined toward the closing operation direction (downward) of the screen device from the front wall 7a side to the rear wall 7b side on the winding shaft 1a side (upper surface). Part) 8a, and the pressing surface 8a is formed in a smooth curved surface convex outward. At the same time, the engaging claw 8 is engaged with a first engaging surface (first engaging portion) 9a of the engaging portion 9 described later on the opposite side (lower surface) of the pressing surface 8a. The second engagement surface (second engagement portion) 8b. The second engagement surface 8b is substantially planar and is inclined upward from the distal end of the locking claw 8 toward the base end fixed to the arm 10, and forms an acute angle with the pressing surface 8a. Yes.
That is, the locking claw 8 is formed in a hook shape projecting obliquely downward from the front wall 7a side to the rear wall 7b side, and its tip is formed at an acute angle.
When the operating rod 3 is moved downward by closing the screen device, the end portion (locking portion 9) of the operating rod 3 on the guide frame 5 protrudes to the initial position in the guide groove 7. The contact surface 8a of the latching claw 8 in this state is brought into contact, and the back surface is smoothly retracted to the retracted position while the pressing surface 8a is pressed as the operating rod 3 is further moved.

  Further, a stopper means 12 is provided between the locking claw 8 and the front wall 7a of the guide frame 5 to limit the amount of the locking claw 8 protruding into the guide groove 7. In this embodiment, the stopper means 12 includes a first projecting portion 12a projecting from the inner surface of at least one of the pair of standing walls 11a and 11b toward the other standing wall 11b, and the locking claw 8. And / or a standing wall 11a having the first projecting portion 12a of the arm 10 and a second projecting portion 12b projecting from the opposite side surface, and the locking claw 8 projects into the guide groove 7. When the first projecting portion 12a and the second projecting portion 12b are brought into contact with each other and engaged at an appropriate projecting position when displaced in the direction of movement (from the retracted position side to the initial position direction), the guide of the locking claw The maximum protruding amount into the groove 7 is limited.

More specifically, the first projecting portion 12a is integrally provided along the guide groove 7 at the distal end portion of the standing wall 11a disposed on the opening side of the guide groove 7. The second protruding portion 12 b is integrally provided along the guide groove 7 at the rear end portion of the locking claw 8 and the arm 10 on the front wall 7 a side. And these 1st protrusion parts 12a and 2nd protrusion part 12b are provided in the positional relationship so that the latching claw 8 may mutually contact | abut in the state which protruded to the initial position (FIG. 5 (a) and FIG. b) and FIG. 6 (a) and FIG. 6 (b)). That is, the locking claw 8 is prevented from protruding into the guide groove 7 beyond the initial position by the stopper means. Further, in this embodiment, even when the locking claw 8 is retracted to the retracted position, the claw tip portion of the locking claw 8 abuts on the first protruding portion 12a (FIGS. 4A and 4B). )), And the retraction amount of the locking claw 8 is also limited.
The groove width of the guide groove 7 remaining between the front end of the locking claw 8 protruding to the initial position and the rear wall 7b is the end of the operating rod 3 on the side of the guide frame 5 (the locking portion 9). It is almost equal to the thickness. However, in this case, in order to realize a smooth opening operation of the screen device as described in detail later, the remaining groove width is slightly larger than the thickness of the end portion (locking portion 9) of the operation rod 3 on the guide groove 5 side. A wider one is desirable.

  On the other hand, as shown in FIGS. 4A to 6A, each of the locking portions 9 includes a slit 9b in which the tip of the screen 2 is inserted and fixed at a central portion on the upper end side. At the upper end opening of the slit 9b, there is an inclined surface (inclined portion) rising so as to widen the slit width upward toward the front wall 7a and the rear wall 7b. Of these inclined surfaces, the inclined surface that rises inclined toward the front wall 7a forms the first engagement surface 9a that engages with the second engagement surface 8b of the locking claw 8. The first engagement surface 9a is formed in a substantially flat shape like the second engagement surface 8b, and forms an acute angle with the side surface disposed on the front wall 7a side in the locking portion 9. Yes.

  The first engagement surface 9a and the second engagement surface 8b are formed so as to incline upward in substantially the same direction, that is, from the rear wall 7b side to the front wall 7a side. As shown in FIG. 5B, when the locking claw 8 is engaged with the locking portion 9 by the closing operation of the screen device, the operating rod 3 is slightly inclined forward toward the front wall 7a. The angle relationship is such that it is locked. That is, the inclination angle of the second engagement surface 8b is slightly smaller than the inclination angle of the first engagement surface 9a.

During the closing operation of the screen device, as described above, the engaging claw 8 that once retracted from the initial position to the retracted position side by the contact of the end of the operating rod 3 on the guide frame 5 side (the engaging portion 9) from above. Is engaged with the engaging portion 9 by elastic return to the initial position side simultaneously with the passage of the engaging portion 9 of the operating rod 3, and as a result, the operating rod 3 is engaged with the closed position of the screen 2. So that the closed state of the screen 2 is maintained.
Further, during the opening operation of the screen device, the locked operating rod 3 is pressed and moved toward the rear wall 7b, so that the first engagement surface 9a of the locking portion 9 is moved to the rear wall 7b by the stopper means. The engagement between the first engagement surface 9a and the second engagement surface 8b is displaced while sliding in the direction of the rear wall 7b on the second engagement surface 8b of the locking claw 8 that is prevented from moving to the side. As a result, the engagement between the locking claw 8 and the locking portion 9 of the operating rod 3 is released.

Next, the operation of the winding screen device having such a configuration will be described in detail.
First, when closing the winding screen device, the operating rod 3 is moved to the closed position of the screen 2 by pulling down the second handle 3 b of the operating rod 3. At this time, when the screen 2 is simultaneously unwound from the winding shaft 1a, the urging force in the winding direction is accumulated in the coil spring 1c built in the winding shaft 1a. 4 (a) and 4 (b), the operating rod 3 pulled down to the vicinity of the closed position is guided by the inclined pressing surface 8a of the locking claw 8 protruding to the initial position. The frame 5 side end portion (locking portion 9) comes into contact with each other and is in a forward inclined state, and moves downward while pressing the locking claw 8 toward the retracted position side and retracting. At the same time, the arm 10 having bending elasticity is bent. When the guide frame 5 side end (locking portion 9) of the operating rod 3 passes the tip of the locking claw 8, as shown in FIGS. 5 (a) and 5 (b), the bent arm 10 is bent. Due to the elastic return, the locking claw 8 is returned from the retracted position side to the initial position, and the second engagement surface 8b of the locking claw 8 is engaged with the first engagement surface 9a of the locking portion 9. As a result, the operating rod 3 is locked and the closed state of the screen 2 is maintained. At this time, the latching claw 8 and the latching portion 9 of the operating rod 3 are more reliably engaged by utilizing the biasing force in the direction of winding the screen 2 accumulated in the coil spring 1c. Can do.

On the other hand, at the time of opening operation, holding the first handle 3a of the operating rod 3 and pressing it toward the rear wall 7b side,
The first engaging surface 9a of the locking portion 9 slides on the second engaging surface 8b of the locking claw 8 locked at the initial position by the stopper means, and the operating rod 3 tilts toward the rear wall 7b. In addition, the engagement between the first engagement surface and the second engagement surface is released, and as a result, the engagement between the locking claw 8 and the locking portion 9 of the operating rod 3 is released (FIG. 6 ( a) and FIG. 6B). Then, an upward force that winds up the screen 2 acts on the unlocked operation rod 3 by the urging force accumulated in the coil spring 1c of the winding shaft 1a. The guide frame 5 side end portion (locking portion 9) smoothly moves upward through a gap formed between the tip of the locking claw 8 at the initial position in the guide groove 7 and the rear wall 7b. As a result, the screen 2 is wound around the winding shaft 1a, and the operating rod 3 is lifted upward to open the screen device.

In the above embodiment, the locking mechanism is provided on one guide frame 5 and one end side of the operating rod 3 guided by the guide frame 5. You may provide in the both ends of the collar 3. FIG.
Further, although the locking claw 8 is configured to be elastically movable back and forth by the bending elasticity of the arm 10, it is not necessarily limited to such a configuration. For example, the locking claw 8 is compressed by the compression elasticity of a spring. Any configuration that can move forward and backward elastically can be adopted, and depending on the configuration, the stopper means 12 can also adopt an appropriate mechanism. Furthermore, although the locking portion 9 of the operating rod 3 has an inclined surface shape that rises in the direction of the front wall 7a, the locking portion 9 can be reliably engaged with the locking claw 8. And if it is the structure which can cancel | release engagement by pressing the operating rod 3 to the back wall 7b side, it can be set as arbitrary shapes.

It is a front sectional view showing a winding type screen device of the present invention. It is side sectional drawing which shows the winding type screen apparatus of this invention. It is a partially broken perspective view which shows the state where the operating rod is not in the closed position of the screen. It is a partially broken perspective view which shows the state in which the operating rod has a screen in a closed position. It is principal part sectional drawing which looked at the state of the latching | locking part and latching claw of the operating rod in closing operation from the side. It is principal part sectional drawing which looked at the latching | locking part of the operating rod during closing operation, and the state of a latching claw from the upper direction. It is principal part sectional drawing which looked at the state which the latching | locking part of the operating rod and the latching claw engaged from the side. It is principal part sectional drawing which looked at the state which the latching | locking part and latching claw of the operating rod engaged. It is principal part sectional drawing which looked at the state of the latching | locking part and latching claw of the operating rod during opening operation from the side. It is principal part sectional drawing which looked at the latching | locking part and latching claw of the operating rod during opening operation from the upper direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Winding box 1a Winding shaft 1c Spring 2 Screen 3 Operation rod 4,5 Guide frame 6,7 Guide groove 6a, 7a Front wall 6b, 7b Rear wall 8 Locking claw 8a Pressing surface (pressing part)
8b 2nd engagement surface (2nd engagement part)
9 Locking portion 9a First engagement surface (first engagement portion)
12 Stopper means

Claims (5)

A winding shaft for winding the screen, an operating rod attached to the tip of the screen, a pair of guide frames having guide grooves for guiding both ends of the operating rod in the opening / closing direction, and the operating rod In the winding screen device having a locking mechanism for locking at the closed position of the screen,
The guide frame has a front wall and a rear wall facing each other to form the guide groove;
A locking claw that protrudes from the front wall side toward the rear wall side at an initial position in the guide groove and that can be elastically advanced and retracted from the retracted position on the front wall side; , Provided at the end of the operating rod, and provided with a locking portion that engages and disengages the locking claw,
During the closing operation, the locking claw once retracted to the retracted position side by the contact of the operating rod engages with the engaging portion of the operating rod by the elastic return to the initial position side, and the screen is closed. State is maintained,
At the time of the opening operation, the engagement between the locking claw and the locking portion is released by pressing the operation rod toward the rear wall side, and the operation rod moves along with the winding of the screen around the winding shaft. , And configured to move in the winding shaft direction through a gap in a guide groove formed between the tip of the locking claw in the initial position and the rear wall.
A roll-up screen device characterized by that.   The winding screen device according to claim 1, wherein the operating rod is provided so as to be tiltable between a front wall and a rear wall.   The winding screen device according to claim 1 or 2, wherein a stopper means is provided between the guide frame and the locking claw to limit a protruding amount of the locking claw into the guide groove. What The winding screen device according to any one of claims 1 to 3, wherein the locking claw has a pressing portion that is inclined in a closing operation direction from the front wall side to the rear wall side on the winding shaft side. Have
In the closing operation, the locking claw is temporarily retracted to the retracted position side when the operating rod comes into contact with the pressing portion. 5. The winding screen device according to claim 4, wherein the locking portion of the operating rod has a first engaging portion that rises inclined toward the front wall, and the locking claw is the pressing member. A second engaging portion that forms an acute angle with the first portion and is inclined in substantially the same direction as the first engaging portion,
During the closing operation, the first engaging portion of the locking portion and the second engaging portion of the locking claw are caused by elastic return of the locking claw once retracted to the retracted position side to the initial position side. Engaged to keep the screen closed.

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