Pull apparatus and pull type sash window

Abstract

To provide a pull apparatus with an opening operation force reduction function and a lock function which increases crime prevention by making it difficult to forget to lock an auxiliary lock and improving operability.SOLUTION: When, in a state where a sash is closed and a tip locking part N of a lock receiver 21 provided at a jamb 19 enters from an aperture A into a base body 2, a lever member 5 is made into a first posture P1 along the base body 2 in such a manner that a rotation end 5A goes to the jamb 19, a lock body 3 moves up and down and is made into a locked state L where a lock piece G is locked with the tip locking part N at a position where the lock piece G appears inside the aperture A. While the lever member 5 is rotated in the locked state L, and it is made into a second posture where the rotation end 5A stands up from the base body 2, at first, the locked state L is released at a position where the lock piece G is hidden from the inside of the aperture A, next, an assist body 4 slides to a sash closing direction D1, and a tip 4A of the assist body 4 presses the lock receiver 21.SELECTED DRAWING: Figure 6A

Description

[Technical field]

[0001] The present invention relates to a pull tab device for use with a sliding sash window. [Background technology]

[0002] In recent years, to meet the demand for high insulation for sliding sash windows, whether double sliding, single sliding or double sliding (separate sliding), double glazed screens have been adopted and the amount of airtight material used has increased. This has resulted in an increase in the force required to open a screen from a closed state. From the viewpoint of universal design, therefore, pull devices with a function to reduce the force required to open the screen are used (for example, see Patent Document 1).

[0003] On the other hand, with the rise in awareness of crime prevention, auxiliary locks are used in addition to main locks such as crescent locks in order to improve crime prevention (for example, see Patent Document 2). Such auxiliary locks are generally attached near the joint frame on the indoor side of the bottom frame of the outer shoji screen. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6414415 [Patent Document 2] Patent No. 3723052 Summary of the Invention [Problem to be solved by the invention]

[0005] When the auxiliary lock is installed on the door with the pull tab, it is easy to forget to lock the auxiliary lock because it is separate from the pull tab. Also, since the auxiliary lock is located on the bottom frame of the outer door, it is difficult to operate, especially for the elderly.

[0006] The present invention aims to provide a pull tab device having an opening operation force reduction function and a locking function, which makes it difficult to forget to lock an auxiliary lock and improves operability to increase crime prevention. [Means for solving the problem]

[0007] A pull tab device according to a first aspect of the present invention is a pull tab device for use with a sliding sash window, and includes a base body attached to the interior side of the door frame of a sliding screen in the sash window, a locking body supported within the base body so as to be able to rise and fall, an assisting body supported within the base body so as to be able to slide in the opening and closing direction of the sliding screen, and a lever member supported within the base body so as to be able to turn about a vertical support shaft. The locking body and the assisting body are linked to the turning movement of the lever member.

[0008] When the screen is closed and the lever member is aligned along the base so that its rotating end faces the vertical frame of the sash window, the locking body rises and falls to a locked state in which the locking body is engaged with a lock receiver provided on the vertical frame, and when the lever member is rotated in the locked state, first the locking body rises and falls to release the locked state, and then the assisting body pushes the lock receiver.

[0009] A pull tab device according to a second aspect of the present invention is the pull tab device according to the first aspect, wherein the base has an opening facing the vertical frame. The locking body rises and falls between a position where the locking piece appears inside the opening and a position where the locking piece is hidden from the inside of the opening. The assisting body advances and retreats between a position where the tip advances from the opening toward the vertical frame and a position where the tip retreats into the base. The lever member rotates between a first position along the base so that the rotating end faces the vertical frame, and a second position where the rotating end stands up from the base. The pull tab device has a biasing means for biasing the lever member to return to the first position.

[0010] When the lever member is placed in the first position with the screen closed and the tip hook portion of the lock receiver inserted into the base from the opening, the lock body rises and falls, and the lock piece hooks on the tip hook portion at a position where it appears inside the opening, resulting in the locked state. When the lever member is rotated to the second position in the locked state, a first interlocking action is performed and then a second interlocking action is performed. The first interlocking action is an action in which the lock body rises and falls due to the rotation of the lever member, and the locked state is released at a position where the lock piece is hidden from the inside of the opening. The second interlocking action is an action in which the assist body slides in the screen closing direction due to the rotation of the lever member, and the tip of the assist body that has advanced from the opening presses the lock receiver.

[0011] According to the configuration of the pull handle device according to the first aspect and the configuration of the pull handle device according to the second aspect, when the sliding screen of a sliding sash window is closed and the lever member of the pull handle device is moved along the base of the pull handle device so that the rotating end of the lever member faces the vertical frame of the sash window, the lock body rises and falls, and the lock body is hooked to the lock receiver provided on the vertical frame of the sash window, resulting in a locked state. Therefore, the auxiliary lock can be locked by operating the pull handle device to close the sliding screen and putting the lever member of the pull handle device in a position (first position) along the base so that the rotating end faces the vertical frame, thereby providing a function of preventing forgetting to lock the door. In other words, the operation is good even for elderly people, and there is less chance of forgetting to lock the auxiliary lock, thereby improving crime prevention.

[0012] According to the configuration of the pull tab device according to the first aspect and the configuration of the pull tab device according to the second aspect, when the lever member is operated in the direction to open the screen from the locked state and the lever member is rotated, the lock body first descends and the locked state is released, so there is no need to consciously perform an unlocking operation of the auxiliary lock. Next, the assist body presses the lock receiver, so that the opening operation force required to open the screen from the closed state can be reduced.

[0013] A pull-handle device according to a third aspect of the present invention is the pull-handle device according to the second aspect, wherein the biasing means is a compression coil spring provided within a mechanism that links the rotational movement of the lever member with the advancement and retreat of the assist body, and when the screen is in the open position, the compression coil spring keeps the tip of the assist body advancing beyond the opening.

[0014] According to the configuration of the pull tab device according to the third aspect, when the sliding screen of a sliding sash window is open, the compression coil spring maintains the assist body in a state in which it is advanced from the opening in the base body of the pull tab device. Therefore, when the sliding screen is open, the advanced assist body restricts the lifting and lowering of the locking body, so that the lever member cannot be brought into the first position. Therefore, when the sliding screen is not in the closed position, the parts restrict the locking operation from being performed, preventing the user from thinking that they have locked the door, and reducing the number of times the auxiliary lock is forgotten to be locked, improving crime prevention (anti-empty locking function). In addition, it is possible to prevent damage to parts that would occur if the sliding screen is accidentally locked while open and then closed in that state.

[0015] This function of preventing empty start and preventing damage to parts can be achieved without using dedicated parts by pressing the assist body with the compression coil spring, which also functions as a biasing means for biasing the lever member to return to the first position, thereby suppressing increases in costs due to the complexity of the product and the increase in the number of parts.

[0016] A pull-tab device according to a fourth aspect of the present invention is the pull-tab device according to the second aspect, further comprising a retaining means for retaining the lever member, which has been biased by the biasing means to return to the first position, in a third position between the first position and the second position with the screen open, so that the locking body does not rise or fall even when the screen is closed and the tip hooking portion of the lock receiver enters through the opening.

[0017] According to the configuration of the pull device according to the fourth aspect, when the sliding screen of a sliding sash window is closed, the lever member is held in the third position, so the locking body does not rise or fall even if the tip hook of the lock receiver provided on the vertical frame enters through the opening in the base. Therefore, for example, since the screen is not automatically locked even if it is closed from outside, it is possible to prevent being locked out on a balcony, etc.

[0018] A sliding-type sash window according to a fifth aspect of the present invention comprises a pull tab device as described in any one of the first to fourth aspects attached to the interior side of the door frame of a sash screen, and a lock receiver provided on a vertical frame which enters the base body through the opening of the pull tab device when the sash screen is closed and has a tip hook portion which hooks onto the lock piece. Effect of the Invention

[0019] As described above, with the pull device and the pull-type sash window of the present invention, the pull device is operated to close the sash window screen, and the lever member of the pull device is oriented along the base so that the pivot end of the lever member faces the vertical frame of the sash window, causing the locking body to rise and fall and lock the auxiliary lock. Therefore, it is easy to operate even for elderly people, and there is less chance of forgetting to lock the auxiliary lock, which improves crime prevention.

[0020] In addition, with the pull handle device and pull-type sash window of the present invention, when the lever member is rotated in a locked state, the lock body first rises and the locked state is released, so there is no need to consciously unlock the auxiliary lock. Next, the assist body presses the lock receiver, so the opening force required to open the sash screen from a closed state can be reduced. [Brief description of the drawings]

[0021] [Figure 1] 1 is a front view showing an example of a sash window in which a pull tab device according to an embodiment of the present invention is used. [Diagram 2] FIG. 4 is an enlarged perspective view of a main portion showing a lock receiver attached to a vertical frame. [Figure 3A]1 is a perspective view showing only the pull tab device and the lock receiver, in which the lever member is in a first position and in a locked state. FIG. [Figure 3B] 11 is a perspective view showing only the pull tab device and the lock receiver, illustrating an unlocked state in which the lever member is in a third position. FIG. [Figure 3C] 13 is a perspective view showing only the pull tab device and the lock receiver, in which the lever member is in a second position and the assist body is advanced to press the lock receiver. FIG. [Figure 3D] This is an oblique view showing only the handle device, showing the lever member in a third position after the screen has been opened and the hand has been released from the lever member. [Figure 4] FIG. 2 is an exploded perspective view of the pull tab device as seen from the rear side. [Diagram 5] FIG. [Figure 6A] 3B is a schematic cross-sectional view corresponding to FIG. 3A, and FIG. 3C is a schematic front view of a part of the cross-section. [Figure 6B] 3B, where (a) is a schematic cross-sectional plan view, and (b) is a schematic partial vertical cross-sectional front view. FIG. [Figure 6C] 3D, in which (a) is a schematic cross-sectional plan view, and (b) is a schematic partial vertical cross-sectional front view. FIG. [Figure 6D] 3D, (a) being a schematic cross-sectional plan view, and (b) being a schematic partial vertical cross-sectional front view. FIG. [Figure 7A] FIG. 3B is a perspective view corresponding to FIG. 3A and FIG. 6A, with the base body and the rear cover body omitted. [Figure 7B] FIG. 3C is a perspective view corresponding to FIG. 3B and FIG. 6B, with the base body and the rear cover body omitted. [Figure 7C] FIG. 5 is a perspective view corresponding to FIG. 3C and FIG. 6C, with the base body and the rear cover body omitted. [Figure 7D] FIG. 7 is a perspective view corresponding to FIG. 3D and FIG. 6D, with the base body and the rear cover body omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this specification, the view from the indoor side shown in FIG. 1 is taken as a front view.

[0023] [Sliding sash window] The sliding sash window in which the pull tab device according to the present invention can be used includes sliding, single-sliding and double-sliding (separate sliding) sash windows, but the following description will be given of a sliding sash window as a representative example.

[0024] As shown in Figure 1, a sliding sash window S, which is a sliding sash 10, has an opening that is opened and closed by sliding an interior door screen 12 and an exterior door screen 13, which are arranged within a frame 11 and contain, for example, double-glazed glass 14, 15, in a door opening and closing direction D, and a main lock M, which is, for example, a crescent lock, is attached to the joint frame portion 16.

[0025] A pull device 1 according to an embodiment of the present invention is attached to the indoor side of the door end frames 17, 18 of the indoor side shoji 12 and the outdoor side shoji 13. A lock receiver 21 is attached to the vertical frames 19, 20 of the frame body 11.

[0026] [Lock receiver structure details] As shown in FIG. 2, the lock receiver 21 comprises a front-side plate portion 21A, a rear-side plate portion 21B, a narrow plate portion 21C, and a tip plate portion 21D, and is attached to the vertical frame 19 by a mounting screw R using, for example, the mounting hole Q in FIG. 3A.

[0027] The front-facing plate portion 21A runs along the front-facing surface of the vertical frame 19. The front-facing plate portion 21B has its base end running along the front-facing surface of the vertical frame 19, and extends from the outside edge of the front-facing plate portion 21A in the door-opening direction D2. The thin plate portion 21C extends in the door-opening direction D2 from the upper part of the door-opening direction D2 side edge of the front-facing plate portion 21B. The tip plate portion 21D extends from the door-opening direction D2 side edge of the thin plate portion 21C to the outside and protrudes downward. The lower part of the tip plate portion 21D is the tip hook portion N.

[0028] [Pull device] Since the pull handle device 1 attached to the end frame 17 of the shoji screen 12 and the pull handle device 1 attached to the end frame 18 of the shoji screen 13 have the same configuration, the following will explain the configuration and operation of the pull handle device 1 attached to the end frame 17 of the shoji screen 12.

[0029] The pull tab device 1 shown in Fig. 1 and Fig. 3A to Fig. 3D is operated with the main lock M unlocked. The pull tab device 1 has a lock piece G, for example, as shown in Fig. 4 and Fig. 6A, which is hooked to the lock receiver 21, and also functions as an auxiliary lock (locking function). In the pull tab device 1 shown in Fig. 1, Fig. 3A and Fig. 6A, the auxiliary lock is in the locked state L (see the tip hook part N and the lock piece G in Fig. 6A(b)).

[0030] When closing the door 12 from an open state, the door 12 is moved in the door closing direction D1 by holding, for example, the operating part O of the pull device 1. When opening the door 12 from a closed state, the lever member 5 of the pull device 1 is held and pulled toward the user to rotate the pivot end 5A, thereby moving the door 12 in the door opening direction D2.

[0031] For example, when the pivot end 5A is rotated from Fig. 3A to Fig. 3B, the auxiliary lock is in the unlocked state UL shown in Fig. 6B. When the lever member 5 of the pull device 1 is held and the pivot end 5A is further rotated as shown in Fig. 3C, the assist body 4 advances from the opening A of the base body 2 and presses the lock receiver 21, thereby reducing the opening force (opening force reduction function).

[0032] When the door screen 12 is opened and the lever member 5 is released, the assist body 4 is maintained in the advanced state from the opening A as shown in Fig. 3D, so that when the door screen 12 is not in the closed position, the parts restrict the locking operation, preventing the user from thinking that they have locked the door, and crime prevention is improved because the auxiliary lock is less likely to be forgotten to be locked (anti-empty lock function). In addition, it is possible to prevent damage to parts that would occur if the auxiliary lock is accidentally locked and the door screen 12 is closed in that state.

[0033] When the door 12 is moved in the door closing direction D1 from the state of the handle 1 in Fig. 3D to close it, even if the end plate portion 21D of the lock receiver 21 pushes the assist body 4 and enters the base body 2 from the opening A, the position of the lever member 5 in Fig. 3D is maintained, and the auxiliary lock is not locked in this state. Therefore, for example, even if the door 12 is closed from outside, it will not be automatically locked, so it is possible to prevent being locked out on the balcony, etc. (lock-out prevention function).

[0034] The lever member 5 of the puller device 1 can rotate between a first position P1 along the base body 2 as shown in Fig. 3A and a second position P2 rising from the base body 2 as shown in Fig. 3C. The lever member 5 is held by a holding means H shown in Fig. 6B and Fig. 6D in a third position P3 intermediate between the first position P1 and the second position P2 as shown in Fig. 3B and Fig. 3D.

[0035] [Details of the puller device structure] Please refer to Figure 4, which is an exploded oblique view of each part of the pull device 1 as seen from the outside (rear side) with the pull device 1 attached to the door frame 17 of the shoji screen 12 (Figure 1), and Figure 5, which is a rear view of the base 2.

[0036] The pull device 1 comprises a base body 2, a lock body 3, an assist body 4, a lever member 5, a compression coil spring 6 which is a biasing means C, a pressing body 7, a slider 8, and a back cover body 9. The pull device 1 is attached to the indoor side of the door frame 17 (Figure 1) of the shoji screen 12 using the mounting hole K in the base body 2.

[0037] (Base) The base body 2 has an opening A facing the vertical frame 19 (Fig. 1) of the sliding sash 10 at the vertical center of the end face on the side in the screen closing direction D1. The base body 2 has lock body guide portions 2A above and below the opening A, and an assist body guide portion 2B on the side of the opening A in the screen opening direction D2. The base body 2 has slider guide portions 2D above and below the assist body guide portion 2B. The base body 2 has a lever member insertion opening V that extends in the vertical direction at the end on the screen opening direction D2 side, and has lever member guide portions 2C on the exterior surfaces above and below the lever member insertion opening V.

[0038] (Lock type) The locking body 3 has upper and lower front panels 3A, 3B in the expected direction located on the screen closing direction D1 side, upper and lower side panels 3C, 3D extending from the outside edges of the front panels 3A, 3B in the screen opening direction D2 side, a connecting plate 3E connecting the side panels 3C, 3D, and an engaging protrusion 3F protruding from the upper and lower side panels 3C, 3D to the inside of the room. The upper and lower front panels 3A, 3B of the locking body 3 are guided by the locking body guide portion 2A of the base 2, so that the locking body 3 is supported within the base 2 so that it can be raised and lowered. The upper part of the front panel 3B is the locking piece G.

[0039] The lock body 3 is made of a plate-like member, and the front plates 3A, 3B in the forward direction are raised and lowered to hook the lock piece G to the tip hook portion N (FIG. 2) of the lock receiver 21, so the space required for the auxiliary lock is small. Therefore, the pull tab device 1 equipped with the auxiliary lock can be made compact.

[0040] (Assist body) The assist body 4 is guided by the assist body guide portion 2B of the base body 2, and is supported within the base body 2 so as to be slidable in the door opening / closing direction D. A biasing means accommodating portion 4B is provided on the side of the assist body 4 in the door opening direction D2.

[0041] (Lever component) When the lever member 5 is inserted through the lever member insertion opening V of the base body 2 from the rear side of the base body 2, the upper and lower vertical support shafts B are guided by the lever member guide portions 2C.

[0042] The lever member 5 has an arm portion 5B (see, for example, FIG. 6A) that protrudes from the rear side. An operating shaft E protrudes vertically from the arm portion 5B, and when the rotating end 5A rotates around the vertical support shaft B, the arm portion 5B also rotates around the vertical support shaft B.

[0043] (Compression coil spring, pressure body) The portion of the compression coil spring 6 on the screen closing direction D1 side is accommodated in the biasing means accommodating portion 4B of the assist body 4, and the portion of the compression coil spring 6 on the screen opening direction D2 side is accommodated in the accommodating portion 7A which opens to the screen closing direction D1 side of the pressing body 7.

[0044] (Assembly of assist body, compression coil spring and pressing body) 4 shows an assembly W in which a compression coil spring 6 and a pressing body 7 are assembled to an assist body 4. An outward extension 7B provided at the end of the pressing body 7 on the side in the screen closing direction D1 enters the biasing means accommodating portion 4B of the assist body 4. Therefore, the pressing body 7 can move relative to the assist body 4 from a position where the outward extension 7B abuts against the first inward extension 4C to a position where the outward extension 7B abuts against the second inward extension 4D.

[0045] (slider) The upper and lower sliders 8 are guided by slider guide portions 2D of the base 2 and are supported within the base 2 so as to be slidable in the screen opening / closing direction D. An engaging recess 8A in the vertical direction is provided on the indoor side of the end portion of the slider 8 in the screen opening direction D2. On the outdoor side of the portion of the slider 8 on the screen closing direction D1 side, there is a horizontal groove portion 8B extending in the screen opening / closing direction D, and an inclined groove portion 8C which rises from the end of the horizontal groove portion 8B on the screen closing direction D1 side as it moves in the screen closing direction D1.

[0046] The engaging protrusion 3F of the locking body 3 engages with the horizontal groove 8B or the inclined groove 8C of the slider 8. The operating shaft E protruding from the arm 5B of the lever member 5 engages with the engaging recess 8A of the slider 8. The arm 5B of the lever member 5 abuts against the end of the pressing body 7 on the side in the screen-opening direction D2.

[0047] (Rear cover body) The rear cover body 9 has an upper support 9A with a guide portion I formed on its surface facing the interior of the room, and a lower support 9B with a guide portion J formed on its surface facing the interior of the room. When the rear cover body 9 is attached to the base body 2, the upper and lower vertical support shafts B of the lever member 5 are guided by the upper and lower guide portions I, J of the rear cover body 9. Therefore, while being guided by the upper and lower lever member guide portions 2C of the base 2 and the upper and lower guide portions I, J of the rear cover body 9, the lever member 5 is supported rotatably around the vertical support shaft B in the base 2.

[0048] The rear cover body 9 is formed with an elastic piece 22 that elastically deforms out of the plane at the vertical center of the end on the side in the screen opening direction D2, and a protrusion 23 is provided on the indoor side surface of the tip of the elastic piece 22. The elastic piece 22 and the protrusion 23 constitute a holding means H that holds the lever member 5, which is biased by the compression coil spring 6 to return to the first position P1 (Fig. 3A), in a third position P3 (Figs. 3B and 3D) between the first position P1 and the second position P2 (Fig. 3C).

[0049] [Details of the operation of the puller device] The locking body 3 rises and falls in conjunction with the rotational movement of the lever member 5, and the locking piece G, which is the upper part of the front plate 3B of the locking body 3, appears and disappears inside the opening A of the base body 2. In other words, the locking piece G rises and falls between a position where it appears inside the opening A and a position where it is hidden from the inside of the opening A.

[0050] The assist body 4 moves in conjunction with the rotational movement of the lever member 5, between a position where the tip 4A advances from the opening A toward the vertical frame 19 (Figure 1) (Figure 3D) and a position where the tip 4A retreats within the base body 2 (Figure 3A).

[0051] The compression coil spring 6, which is the biasing means C provided between the assist body 4 and the pressing body 7, is provided in a mechanism that links the rotational movement of the lever member 5 with the advancement and retreat of the assist body 4. The compression coil spring 6 biases the lever member 5 to return to the first position P1 (FIG. 3A), and biases the assist body 4 in the door closing direction D1. As a result, when the door 12 (FIG. 1) is open, the assist body 4 is maintained in a state of advancing from the opening A (see, for example, FIG. 3D).

[0052] The operation of the puller device 1 will be described with reference to Figures 6A to 6D and Figures 7A to 7D. Figures 6A and 7A correspond to Figure 3A, Figures 6B and 7B correspond to Figure 3B, Figures 6C and 7C correspond to Figure 3C, and Figures 6D and 7D correspond to Figure 3D.

[0053] (Locked state) 6A and 7A, the lever member 5 of the pull device 1 is in a first position P1 along the base 2 with the pivot end 5A facing the vertical frame 19. In this state, the lock piece G of the lock body 3 is located in the door-closing direction D1 of the tip hook portion N of the tip plate portion 21D of the lock receiver 21 that has entered the base 2 from the opening A, resulting in the locked state L. In this state, the engaging protrusion 3F of the lock body 3 is in the middle position of the inclined groove portion 8C of the slider 8.

[0054] (Unlocking operation) 6B and 7B show the state in which the lever member 5 of the pull device 1 has been rotated by an angle T1. In conjunction with the rotation of the lever member 5, the slider 8 is pushed by the operating shaft E, and the slider 8 moves in the door-closing direction D1 from the position shown in Figs. 6A and 7A. As a result, the engaging protrusion 3F of the locking body 3 is pushed by the wall forming the inclined groove portion 8C and moves to the end of the horizontal groove portion 8B in the door-closing direction D1, causing the locking body 3 to descend. Therefore, the locking piece G of the locking body 3 descends from the position of the tip hook portion N of the tip plate portion 21D of the lock receiver 21 in the door-closing direction D1, resulting in the unlocked state UL (first interlocking operation F1).

[0055] In this way, when opening the screen 12 (Figure 1) from the locked state L in Figure 6A, the lever member 5 is operated in the screen-opening direction D2 as shown in Figure 6B to Figure 6C, and while the lever member 5 is rotated from the first position P1 to the second position P2, the locked state L is first released by the first interlocking action F1, so there is no need to consciously perform an operation to unlock the auxiliary lock.

[0056] (Reduced opening force) 6C and 7C show the state in which the lever member 5 of the pull device 1 has been rotated a further angle T2 to place the lever member 5 in the second position P2. In conjunction with the rotation of the lever member 5, the arm portion 5B presses the pressing body 7 in the door-closing direction D1, causing the assist body 4 to protrude from the opening A of the base body 2 and the tip 4A of the assist body 4 to press the tip plate portion 21D of the lock receiver 21 (second interlocking operation F2), thereby providing the opening operation force reduction function. In FIG. 6C, the length from the vertical support shaft B to the rotating end 5A is longer than the length of the arm portion 5B, and the opening operation force is reduced by utilizing the principle of leverage.

[0057] As described above, the pull tab device 1 undergoes the first interlocking action F1 and then the second interlocking action F2 while the lever member 5 is rotated from the locked state L, in which the lever member is in the first position P1, to the second position P2. The first interlocking action F1 is an action in which the lock body 3 is lowered by the rotation of the lever member 5, and the lock state L is released (the action is set to the unlocked state UL) at a position where the lock piece G is hidden from the inside of the opening A. The second interlocking action F2 is an action in which the assist body 4 slides in the screen closing direction D1 by the rotation of the lever member 5, and the tip 4A of the assist body 4 that has advanced from the opening A presses the lock receiver 21.

[0058] 6D and 7D show the state in which the screen 12 (FIG. 1) is opened and the hand is released from the lever member 5. As described above, when the screen 12 is open, the compression coil spring 6 keeps the assist body 4 in a state in which it is advanced from the opening A. Therefore, when the screen 12 is open, the advanced assist body 4 restricts the elevation of the lock body 3. Therefore, the lever member 5 cannot be brought into the first position P1, providing the aforementioned function of preventing empty hanging.

[0059] In this embodiment, no dedicated parts are used to realize the above-mentioned function of preventing empty start and to prevent damage to parts. That is, the function of preventing empty start is realized by pressing the assist body 4 with the compression coil spring 6, which also functions as the biasing means C that biases the lever member 5 to return to the first position P1. Therefore, it is possible to suppress an increase in costs due to a complicated product and an increase in the number of parts.

[0060] The lever member 5, which is biased by the compression coil spring 6 to return to the first position P1, is held in a third position P3 between the first position P1 (FIG. 6A) and the second position P2 (FIG. 6C) by a holding means H shown in FIG. 6D. That is, since the tip of the arm portion 5B of the lever member 5 is stopped by the protrusion 23, the lever member 5 is held in the third position P3.

[0061] In the state shown in Figure 6D where the screen 12 (Figure 1) is opened and the lever member 5 is held in the third position P3 by the holding means H, even if the screen 12 is closed and the tip hook portion N of the lock receiver 21 enters through the opening A, the lock body 3 will not rise or fall, and the locked state L will not be reached, thereby providing the lock-out prevention function.

[0062] In this embodiment, no dedicated parts are used to achieve the lock-out prevention function. That is, the rear cover body 9 is provided with an elastic piece 22 and a protrusion 23 to serve as a holding means H, and the protrusion 23 abuts against and stops the tip of the arm portion 5B of the lever member 5, thereby achieving the lock-out prevention function. This makes it possible to prevent the product from becoming complicated and the cost from increasing in the number of parts.

[0063] (Locking operation) When the door screen 12 is closed from the state shown in FIG. 6D and the end hooking portion N of the lock receiver 21 enters through the opening A, it is easy to operate the lever member 5 so that the end of the arm portion 5B overcomes the protrusion 23 from the state where the end of the arm portion 5B is abutted against the protrusion 23. Therefore, by placing the lever member 5 in the first position P1 shown in FIG. 6A, the door can be placed in the locked state L, which has the function of preventing the door from being left unlocked. In other words, the door can be operated to close the door screen 12 and the lever member 5 of the door screen 1 in the first position P1 can lock the auxiliary lock, which is easy to operate even for elderly people and reduces the chance of forgetting to lock the auxiliary lock, thereby improving crime prevention.

[0064] The above description of the embodiments is merely illustrative and not restrictive. Various improvements and modifications can be made without departing from the scope of the present invention. For example, the above embodiment is described with reference to an example of a configuration in which the lock piece G is lowered to set the unlocked state UL, but if the inclined groove portion 8C of the slider 8 is an inclined groove portion facing in the opposite direction, the lock piece G can be raised to set the unlocked state UL. In that case, when the pivot end 5A of the lever member 5 of the pull device 1 takes the first position P1 along the base body 2 so as to face the vertical frame 19, the lock piece G descends to set the locked state L. [Explanation of symbols]

[0065] 1 Pull device 2 Base 2A Lock body guide part 2B Assist body guide part 2C Lever member guide section 2D Slider guide section 3 Lock body 3A, 3B Front plate 3C,3D side plate 3E connecting plate 3F Engagement protrusion 4 Assist body 4A Tip 4B Pressing means housing 4C First inward extending part 4D Second inward extending part 5 Lever member 5A Rotating end 5B Arm section 6 Compression coil spring 7 Pressing body 7A Spring housing 7B Outer extension 8 Slider 8A Engagement recess 8B Horizontal groove 8C Inclined groove 9 Rear cover body 9A Upper support 9B Lower support 10 Sliding sash 11 Frame 12 Indoor Shoji 13 Outdoor Shoji 14,15 Double-glazed glass 16 Joint frame 17,18 Door frame 19,20 Vertical frame 21 Lock receiver 21A Projection direction plate section 21B Front-facing plate section 21C Narrow plate section 21D tip plate portion 22 elastic piece 23 Convex A Opening B Vertical support shaft C. Pressing means D. Shoji opening / closing direction D1 Shoji door closing direction D2 Shoji door opening direction E Operation axis F1 1st interlocking operation F2 Second interlocking action G Lock piece H Holding means I,J Guide part K Mounting hole L Locked state M Main lock N Tip latch O Operation unit P1 1st posture P2 2nd posture P3 3rd posture Q Mounting hole R Mounting screw S Sliding sash window T1, T2 angle UL Unlocked state V Lever insertion opening W assembly

Claims

1. A pull tab device for use with a pull-type sash window, A base body attached to the indoor side of the door frame of the shoji screen in the sash window; A lock body supported within the base body so as to be capable of ascending and descending; An assist body supported within the base body so as to be slidable in the opening and closing direction of the screen; a lever member supported within the base body so as to be rotatable about a vertical axis; Equipped with The lock body and the assist body are linked to the pivotal movement of the lever member, When the sliding screen is closed and the lever member is moved along the base so that the pivot end of the lever member faces the vertical frame of the sash window, the locking body rises and falls, and the locking body is engaged with the lock receiver provided on the vertical frame to enter a locked state. When the lever member is rotated in the locked state, first, the lock body is lowered to release the locked state, and then, the assist body presses the lock receiver. Pulling device.

2. The base body has an opening facing the vertical frame, The locking body rises and falls between a position where the locking piece appears inside the opening and a position where the locking piece is hidden from inside the opening, The assist body advances and retreats between a position where the tip advances from the opening toward the vertical frame and a position where the tip retreats into the base body, the lever member rotates between a first position in which the rotation end is aligned with the base body so as to face the vertical frame and a second position in which the rotation end is raised up from the base body, a biasing means for biasing the lever member so as to return it to the first position, When the lever member is in the first position with the front end hook portion of the lock receiver inserted into the base body through the opening, the lock body moves up and down, and when the lock piece appears inside the opening, the lock piece hooks onto the front end hook portion, thereby entering the locked state; When the lever member is rotated to the second position in the locked state, a first interlocking action is performed and then a second interlocking action is performed. the first interlocking action is an action in which the lock body is lowered and raised by the rotation of the lever member, and the locked state is released at a position where the lock piece is hidden from the inside of the opening, The second interlocking action is an action in which the assist body slides in the direction of closing the screen by rotating the lever member, and the tip of the assist body that has advanced from the opening presses the lock receiver.

2. The puller device of claim 1.

3. the biasing means is a compression coil spring provided in a mechanism that links the pivoting action of the lever member with the advancing and retreating action of the assist body, When the screen is open, the compression coil spring maintains the tip of the assist body protruding from the opening.

3. The puller device of claim 2.

4. A holding means is provided for holding the lever member, which is biased by the biasing means to return to the first position, in a third position between the first position and the second position with the screen open, and the lock body does not rise or fall even when the screen is closed and the tip hook portion of the lock receiver enters through the opening.

3. The puller device of claim 2.

5. The pull device according to any one of claims 1 to 4 is attached to the indoor side of the door end frame of a shoji screen, and a lock receiver having a tip hook portion that enters the base body from the opening of the pull device when the shoji screen is closed and is hooked onto the lock piece is provided on the vertical frame. Sliding sash window.

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