JP4192074B2 - Ventilation stay for inward windows - Google Patents

Description

  The present invention relates to a ventilation stay for an inward-turning window that is applied to an inward-turning window and can restrict the opening of the window at a ventilation position and a fully open position.

  A ventilation stay for an inward-turning window that restricts the opening of a window to a ventilation position and a fully open position is known, for example, from Patent Document 1. There, the window and the opening frame are connected by two foldable check arms. A check arm on the opening frame side is connected to a slider, and the slider is guided and supported by a guide rail fixed to the opening frame so as to be vertically slidable. A stopper whose position is adjustable is provided at the lower end of the guide rail. The window side check arm is connected to a bracket fixed to the window, and a latch mechanism is provided below the check arm. By switching the latch mechanism, the window side check arm can be switched between a state where it cannot swing and a state where it can swing. When the ventilation is released, the window side check arm is fixed by a latch mechanism to swing only the opening frame side check arm, and when fully opened, the window side check arm is released and the two check arms are extended.

Japanese Patent No. 3304074 (paragraph number 0013, FIG. 10)

  According to the ventilation stay described above, it is possible to restrain the opening of the window in the ventilation position and the fully open position by restraining or releasing the restraining arm connected to the window side only by switching the latch mechanism. The problem is that the opening of the window is restricted by two check arms, so a large gap is required between the window and the opening frame, and the ventilation stay may not be applied depending on the cross-sectional structure of the opening frame. There is also a disadvantage that the overall structure of the ventilation stay is complicated. Since the latch mechanism is fixed to the side surface of the window, the latch mechanism cannot be operated unless the window is ventilated. Moreover, since the two check arms extend linearly to swing the window fully open, if the latch is released in the ventilated state, the window may suddenly fall into the room. For example, when the latch is released while being held by the window, the balance may be lost, which causes a problem in safety.

  It is an object of the present invention to allow a window to be controlled to be opened at a ventilation position and a fully open position with only one check arm, and even when the gap between the window for installing the ventilation stay and the opening frame is small, ventilation is performed. The purpose of the present invention is to provide a ventilation stay for a fall-down window that can be installed without a problem and can expand versatility accordingly. The object of the present invention is to automatically reset the ventilation stay to the ventilation state by utilizing the opening operation of the window beyond the ventilation position to prevent the window from being kept closed while being fully opened. Therefore, unless there is a clear intention of the user, it is to provide a ventilating stay for inverted windows with excellent safety that can reliably prevent the window from being opened beyond the ventilation position. . An object of the present invention is to provide a ventilation stay for an inward window that prevents the window from suddenly opening and swinging from the ventilation position to the fully open position, and can safely open the window.

The ventilating stay for the inward window of the present invention is provided between the window 2 and the opening frame 1 and can restrict the opening of the window 2 at the ventilation position and the fully open position. The ventilation stay is connected to the check arm 10 whose one end is fixed to the side surface of the window 2, the guide rail 12 attached to the opening frame 1, and the other end of the check arm 10 and is slidable up and down on the guide rail 12. And a slider 11 that is slid up and down as the window 2 is opened and closed, and a restriction mechanism that is incorporated in the guide rail 12 and restricts the movement of the slider 11 at the ventilation position . As shown in FIG. 1, the restriction mechanism is configured to be switchable between a ventilation state that restricts the vertical slide movement of the slider 11 in the ventilation position and a fully open state that allows the slider 11 to move to the fully open position. The restricting mechanism is disposed near one end of the guide rail 12, and includes a capture lever 33 that engages and captures the slider 11 in the ventilation position, and a first spring that swings and urges the capture lever 33 to the engagement posture. 34 and a switching tool 35 for switching the capture lever 33 from the engaged posture to the disengaged posture. The switching tool 35 is supported so as to be reciprocally displaceable between an operating position where the catching lever 33 is disengaged and a standby position where the catching lever 33 is retracted outside the swinging region, and the spring 45 moves toward the standby position. Energize return. The reset mechanism includes a reset mechanism that returns the regulating mechanism that has been switched to the fully open state to the ventilation state . As shown in FIG. 13, the reset mechanism holds the switching tool 35 in the operating position against the biasing force of the spring 45. A locking body 50 that moves together with the slider 11 and a release tool 28 that unlocks the locking body 50. Thus, in a state in which the capture lever 33 is switched to the disengagement posture with the switching tool 35, the window 2 can be fully opened, and when the slider 11 moves in the opening direction beyond the ventilation position , the release tool 28 locks it. The lock body 50 is unlocked so that the holding state of the operating position of the switching tool 35 by the body 50 is released, and the switching tool 35 is automatically returned to the standby position (Claim 1). .

  Specifically, as shown in FIG. 9, the slider 11 includes a slider body 16 and an engagement piece 17 that moves along with the slider body 16 and is engaged and captured by the capture lever 33. The release tool 28 is provided integrally with the engagement piece 17 (Claim 2).

A switching tool 35 and a capture lever 33 are disposed adjacent to one end of the guide rail 12. The locking member 50 provided on the switching換具35, as shown in FIG. 1, includes a passive part 53 which projects to the outer surface of the guide rail 12, and a pawl 54 which is formed overhanging the free end of the passive portion 53 ing. The inner surface of the guide rail 12, to form a hooking groove 51 for engaging and disengaging the pawl 54. Therefore, the lock body 50 can be hooked with the latching groove 51 and the switching tool 35 can be held in the operating position, and the unlocking posture when the lock is released by the unlocking tool 28 and separated from the latching groove 51. (3).

  A switching tool 35 and a capture lever 33 are disposed adjacent to one end of the guide rail 12. As shown in FIG. 18, the lock body 50 includes an engagement recess 73 and an engagement claw 71 that are provided on the capture lever 33 and the switching tool 35 and can be engaged with each other. In the lock body 50, the engagement recess 73 and the engagement claw 71 are engaged to hold the capture lever 33 in the engagement release posture, and the engagement recess 73 and the engagement claw 71 are separated and captured. The lever 33 is configured to be switchable to an unlocking posture in which the lever 33 is returned to the engaging posture. The lock body 50 switched to the locked posture is configured to be unlocked by the release tool 28 via the catch lever 33 (Claim 4).

  As shown in FIG. 6, one end of the check arm 10 is connected to the side surface of the window 2 via the bracket 9, and the guide rail 12 is fixed to the inner side surface of the opening frame 1. An operating body 56 for switching the switching tool 35 in a state where the window 2 is closed is assembled to the indoor side of the window 2. The operating body 56 can be provided on the side of the window 2 as shown in FIG. 12, or can be provided on the side of the opening frame 1 as shown in FIG. 17 (claim 5).

  In the present invention, the check arm 10, the slider 11 coupled to the check arm 10, the guide rail 12 that guides and supports the slider 11, the restriction mechanism that restricts the movement of the slider 11 at the ventilation position, and the fully open state are switched. By configuring the ventilation stay with a reset mechanism for returning the regulating mechanism to the ventilation state and engaging and capturing the slider 11 with the capturing lever 33 of the regulating mechanism, the movement of the slider 11 in the opening direction is regulated, The window 2 can be opened to the fully released position by restricting the opening of the window 2 at the ventilation position and switching the capture lever 33 to the disengagement posture with the switch 35 and releasing the restriction of the slider 11. . That is, the slider 11 slides up and down, and the connecting position between the slider 11 and the check arm 10 is continuously changed, so that the window 2 is opened at the ventilation position and the fully open position by only one check arm 10. Made it possible to regulate.

  Therefore, according to the ventilation stay of the present invention, the overall thickness of the ventilation stay in the state in which the window 2 is closed can be made smaller than that of this type of conventional ventilation stay, so that the facing gap between the window 2 and the opening frame 1 is reduced. Even if it is small, it can be installed without hindrance, and a highly versatile ventilation stay that can be applied to most of the existing interior fall windows is obtained. Since the entire ventilation stay can be made into one small unit part, even existing window sashes can be assembled later without any trouble.

  The reset mechanism is constituted by a lock body 50 that holds the switching tool 35 in the operating position against the biasing force of the spring 45, a release tool 28 that moves along with the slider 11 and operates to unlock the lock body 50, and the like. When the slider 11 moves beyond the ventilation position in the opening direction, the lock body 50 is unlocked by the release tool 28, the switching tool 35 is automatically returned to the standby position, and the capture lever 33 can be engaged with the slider 11. Since the operation is returned to the correct state, the ventilation stay can be automatically reset to the ventilation state. Thus, according to the ventilation stay that can always be reset to a state in which ventilation can be opened in a state in which the window 2 is closed, the window 2 can be prevented from being held in a closed state while being fully open, and therefore Unless there is a clear intention of the user, the window 2 can be reliably prevented from being opened beyond the ventilation position, and the safety of the ventilation stay can be improved accordingly. When the window 2 is opened, the opening speed of the window 2 can be suppressed by utilizing the sliding friction between the slider 11 and the guide rail 12. This means that the window 2 can be prevented from opening and swinging rapidly, unlike the conventional ventilation stay in which the window suddenly opens and swings while the two check arms are linearly extended. Therefore, the safety when fully opening the window 2 can be further improved (claim 1).

  According to the ventilation stay in which the slider 11 is configured to include the slider body 16 and the engagement piece 17 engaged and captured by the capture lever 33 and the release tool 28 is provided integrally with the engagement piece 17, The number of components of the mechanism and the reset mechanism can be reduced, and the manufacturing cost can be reduced despite the multifunctional ventilation stay that can be automatically reset to the ventilation state.

  The lock body 50 fixed to the switching tool 35, the latching part 51 provided on the inner surface of the guide rail 12, the release tool 28, etc. constitute a reset mechanism, and the latching claw 54 provided on the lock body 50 is used as the latching part. According to the ventilation stay which is engaged with and disengaged from 51 and holds the switching tool 35 in the operating position or can be returned to the standby position, the lock body 50 can be moved using the sliding operation of the switching tool 35 to the operating position. The latching pawl 54 can be latched and engaged with the latching portion 51, and the latching pawl 54 can be separated from the latching portion 51 by operating the lock body 50 by the displacement operation of the release tool 28 that moves along with the slider 11. Therefore, there is no waste of structure in the regulation mechanism and the reset mechanism, and the entire structure of the ventilation stay that can be automatically reset to the ventilation state can be simplified. As shown in FIG. 1, when the lock body 50 is formed from a leaf spring material, the number of components of the reset mechanism can be minimized.

  An engaging recess 73 and an engaging claw 71 which are provided on the capture lever 33 and the switching tool 35 and can be engaged with each other constitute a lock body 50, and the release lever 28 is operated to displace the capture lever 33 to lock the lock body 50. According to the ventilation stay in which the body 50 can be unlocked, the number of components of the ventilation stay can be reduced and the cost can be reduced as much as the reset mechanism is configured by using the capture lever 33 and the switching tool 35. The entire ventilation stay can be compacted to save space. There is also an advantage that the reset mechanism can be configured regardless of the cross-sectional structure of the guide rail 12. Since the lock 50 is unlocked by the release tool 28 via the catch lever 33, the engagement piece 17 can also serve as the release tool 28, and the structure can be further simplified as compared with the case where the release tool 28 is provided separately. The cost can be reduced (claim 4).

  According to the ventilation stay in which the operation body 56 is assembled on the indoor side of the window 2 in order to perform the switching operation of the switching tool 35, the ventilation stay can be switched to the fully open state while the window 2 is closed. The window opening procedure, which was indispensable in conventional ventilation stays, that is, it is not necessary to change the state of the ventilation stays after opening them to the ventilation position, and it is not necessary to fully open the windows. It is done. If necessary, since the ventilation stay can be switched to the fully open state by directly operating the switching tool 35 in the ventilated open state, a ventilation stay that is easier to use than the conventional ventilated stay can be obtained. Item 5).

  1 to 16 show an embodiment of a ventilation stay according to the present invention. In FIG. 2, reference numeral 1 denotes an opening frame, and 2 denotes a window. The window 2 is supported by hinges 3 attached to the lower left and right sides of the window 2 so that the window 2 can be opened inward and can be maintained in a closed position by a latch 4 provided between the upper center of the window frame and the opening frame. When the release knob 5 of the latch 4 is pulled down against the spring, the engagement between the latch bolt and the metal fitting is released and the window 2 can be opened. In order to restrict the opening of the window 2 at the ventilation position and the fully open position, a pair of ventilation stays are provided between the left and right side surfaces of the window frame and the left and right inner side surfaces of the opening frame 1. Since the left and right ventilation stays are symmetrical, only the left ventilation stay will be described with reference to FIG.

  In FIG. 3, the ventilation stay includes a check arm 10 whose one end is connected to the side surface of the window frame via a bracket 9, a slider 11 connected to the other end of the check arm 10, and a slider fixed to the opening frame 1. A guide rail 12 that guides and supports 11 slidably up and down, a stopper 13 that is fixed to the lower end of the guide rail 12, a restriction mechanism that is incorporated in the guide rail 12 and restricts the slider 11 from being opened at the ventilation position, and a fully open state The regulation mechanism switched to is configured with a reset mechanism for returning to the ventilation state. The bracket 9 is formed of a press fitting bent in a hat shape, and a check arm 10 is connected to an outer surface of the convex portion via a pin 15 so as to be relatively swingable. The upper and lower fastening seats of the bracket 9 are fastened and fixed to the window frame with screws.

  In FIG. 6, the slider 11 includes a slider body 16, an engagement piece 17 fixed to the slider body 16, a brake body 18, a leaf spring (spring) 19 that presses and biases the brake body 18, and the like. The slider body 16 is formed of a vertically long plastic block having a convex cross section, and a recess 20 for accommodating the brake body 18 and the spring 19 is formed on the lower half side thereof.

  The brake body 18 is composed of a brake piece 22 made of a plastic product having a C-shaped cross section rich in wear resistance, and a backup frame 23 made of a metal strip having a T-shaped cross section fitted inside the brake piece 22. is there. As shown in FIG. 7, the braking piece 22 is pushed and biased by the leaf spring 19 through the backup frame 23, so that the braking piece 22 is pressed against the inner bottom of the guide rail 12, and the moving speed of the slider 11 is effective. Can be limited. By adjusting the screwing amount of the adjusting screw 24 screwed into the leaf spring 19, the frictional force of the braking piece 22 can be adjusted to a large or small value.

  As described above, when the brake body 18 is provided on the slider body 16, the window 2 can be slowly opened and swung by the frictional resistance when the brake body 18 slides along the guide rail 12, so that the window 2 is closed. Even when opening from the position to the fully open position, it is possible to reliably prevent the window 2 from rapidly swinging and to improve safety when the window 2 is fully opened.

  The engagement piece 17 is made of a stainless steel press fitting having a U-shaped cross section, and an engagement hole 26 that is engaged and captured by a capture lever 33 described later is formed on the plate surface. An L-shaped holding arm 27 is bent downward and formed. At the upper end of the engagement piece 17, a release tool 28 for unlocking a lock body 50 described later is integrally formed (see FIG. 6). The holding arm 27 is assembled to the upper part of the slider main body 16 and the engagement piece 17, the slider main body 16, and the holding arm 27 are fastened with the pin 29 (see FIGS. 6 and 11), thereby the engagement piece. 17 is integrated with the slider body 16. Further, the check arm 10 is connected to the slider body 16 so as to be able to swing relative to the slider body 16 by using the pin 29.

  The guide rail 12 is made of an aluminum strip having a C-shaped cross section, protrudes with a pair of receiving walls 14 facing the rail opening edge, and a plurality of upper and lower portions of the rail bottom wall are fixed to the opening frame 1 with screws. To do. In FIG. 10, the stopper 13 includes a rubber block 13a, a pair of holding metal fittings 13b and 13c for pressing and fixing the rubber block 13a to the guide rail 12, and a screw 30 for fastening both the holding metal fittings 13b and 13c. When the window 2 is fully opened, the stopper 13 receives the lower end of the slider 11 with the rubber block 13a, absorbs the impact shock of the slider 11, and can slowly stop the swinging of the window 2 from opening. Even when the window 2 is opened, the window 2 can be quietly stopped at the fully opened position. The opening angle of the window 2 when fully open can be changed by loosening the screw 30 and changing the fastening position of the holding fittings 13b and 13c with respect to the guide rail 12.

In FIG. 1, the regulating mechanism is disposed near the upper end of the guide rail 12, and a capture lever 33 that engages and captures the engagement piece 17 of the slider 11, and a torsion coil that swings and biases the capture lever 33 to the engagement posture. A spring 34 ( first spring 34 ) having a shape, and a switching tool 35 for switching the capture lever 33 from the engagement posture to the engagement release posture.

  In FIGS. 1 and 13, the capture lever 33 is made of a stainless steel material having a passive arm 36 and a claw 37 at the upper and lower ends, and is supported by a shaft 38 whose middle portion is fixed to the guide rail 12. Thus, the seesaw can be swung between the engagement posture and the engagement release posture. The catch lever 33 engaged and biased counterclockwise by the spring 34 is held in an engaged posture with its stopper surface 39 abutting against the inner bottom wall of the guide rail 12 (state of FIG. 1). . In this engagement posture, the claw 37 intersects the vertical slide locus of the engagement piece 17. Therefore, when the window 2 is opened from the closed position shown in FIG. 5 to the ventilation position, the upper edge of the engagement hole 26 is received by the claw 37 as shown in FIGS. 1 and 3, and the window 2 is opened further. Can be controlled.

  In order to open the window 2 restricted at the ventilation position to the fully opened position, a switching tool 35 is disposed above the capture lever 33 so that the capture lever 33 can be switched to the disengagement posture by the switch 35. ing. 1, 9, and 10, the switching tool 35 includes a sliding block 40 having a convex cross section that is guided and supported by the guide rail 12 so as to be slidable only up and down, and an operation piece fixed to the outer surface of the sliding block 40. 41. The operation piece 41 is formed of a press fitting having an L-shaped cross section. As shown in FIG. 12, the operation piece 41 is fastened to the sliding block 40 with a screw 42 together with a lock body 50 to be described later with one plate surface protruding from the guide rail 12. To do. A slope 43 for pushing up the passive arm 36 is formed at the lower end of the sliding block 40.

The switching tool 35 has a sliding limit in the vertical direction defined by a stopper fitting 44 fixed to the guide rail 12 and the preceding capture lever 33. Specifically, the sliding block 40 retracts outside the swinging region of the capture lever 33 and is received by the stopper bracket 44 (the state shown in FIG. 1), and the slide block 40 holds the capture lever 33 of the spring 34. It can slide up and down to the operating position (state shown in FIG. 13) where the engagement is released against elasticity. The switching tool 35 is a compression coil spring 45 (second spring 45) interposed between the stopper fitting 44 and the sliding block 40, and urges the switching tool 35 toward the standby position. On the inner and outer surfaces of the sliding block 40, a spring recess 46 for accommodating the spring 45 and an escape recess 47 for receiving the latching claw 54 of the lock body 50 are formed.

  1 and 13, the reset mechanism includes a lock body 50 fixed to the sliding block 40, a latching groove (latching portion) 51 formed in the receiving wall 14 of the guide rail 12, and a lock body 50. The engagement state with the latching groove 51 is constituted by a release tool 28 for performing a lock release operation. The lock body 50 is integrally formed with a fastening surface 52, a passive portion 53 that is continuously curved outwardly from the fastening surface 52, and a hooking claw 54 that is formed on both sides of the end of the passive portion 53. It consists of a press fitting made of leaf spring. As shown in FIGS. 14 and 15, the width of the passive portion 53 is set to be smaller than the facing interval of the receiving wall 14, but the width dimension of the hooking claw 54 is larger than the facing interval of the receiving wall 14 and guide rails. 12 is set slightly smaller than the inner surface facing distance. In the state where the fastening surface 52 of the lock body 50 is fixed to the sliding block 40, the passive portion 53 protrudes outward of the guide rail 12 beyond the movement locus of the release tool 28.

  In order to switch the ventilation stay from the ventilation state to the fully open state by switching the switching tool 35 in a state where the window 2 is closed, an operation body 56 is provided on the upper side of the window frame. In FIG. 12, the operating body 56 includes a guide frame 57 having a C-shaped cross section fixed to the window frame, a slide piece 58 guided and supported by the guide frame 57 so as to be slidable up and down, and the guide frame 57 and the slide piece 58. A compression coil-shaped spring 59 (see FIG. 8) that is interposed therebetween to push up the slide piece 58, a lever 60 made of stainless steel plate fixed to the slide piece 58, and the lever 60 on the outer surface of the window frame. The operation knob 61 is fixed.

  The lever 60 and the slide piece 58 are fastened by a female screw plate 62 disposed on the inner surface of the slide piece 58 and two screws 63 screwed into the female screw plate 62. As shown in FIG. By engaging the shaft end of this with a longitudinal guide groove 64 provided in the guide frame 56, the assembled state of the slide piece 58 and the guide frame 56 is maintained against the urging force of the spring 59. As shown in FIGS. 1 and 9, when the window 2 is closed, the lower end of the slide piece 58 faces the upper end surface of the operation piece 41, so that the operation knob 61 is resisted against the biasing force of the spring 59. When the push-down operation is performed, the operation piece 41 is pushed down, the switch 35 is switched to the operating position, and the capture lever 33 can be switched to the disengagement posture. The lever 60 in the state in which the window 2 is closed slides up and down while sandwiched between the packing 66 attached to the opening frame 1 and the seal wall 67 of the window frame as shown in FIG. There is no need to form an operation groove or notch for the lever 60 in the window frame.

  The operation of the ventilation stay will be described below. As shown in FIG. 9, when the window 2 is closed, the capture lever 33 is switched to the engagement posture, and the claw 37 is fitted into the engagement hole 26 of the engagement piece 17. In the lock body 50, the passive portion 53 protrudes from the outer surface of the guide rail 12 in a state where the latching claw 54 is received by the inner surface of the receiving wall 14 and the entire passive portion 53 is elastically deformed. When the window 2 is opened from this state, the slider 11 moves downward along with the opening swing of the window 2, and the upper end of the engagement hole 26 is received by the claw 37 as shown in FIG. The movement of the window 2 in the opening direction is restricted. Normally, the window 2 is opened and closed between the ventilation position of FIG. 3 and the closed position of FIG.

  For example, when cleaning the outdoor surface of the window 2, the operating body 56 is pushed down to push the switching tool 35 down from the standby position to the operating position, and the capture lever 33 is switched to the disengagement posture. The lock body 50 also moves downward along with the switching tool 35 that is lowered to the operating position. As a result, in a state in which the switching tool 35 is completely switched to the operating posture, the latching claw 54 of the lock body 50 passes through the latching groove 51 from the inside, and the notch of the latching groove 51 as shown in FIG. It is hooked at the edge. In this state where the latching claw 54 is received by the latching groove 51, even if the operating body 56 slides upward, the switching tool 35 cannot slide upward, so that the operating position is resisted against the biasing force of the spring 45. Can be held and fixed. In the fully open state, the window 2 can be opened largely, so that the window surface on the outdoor side can be easily cleaned, and when the screen door is retrofitted on the outdoor side of the window 2, the screen door Assembling work can be easily performed.

  In the above switching state, as shown in FIG. 13, since the claw 37 of the capture lever 33 is retracted from the movement area of the engagement piece 17, the engagement piece 17 and the slider 11 pass through the ventilation position and pass through the ventilation position. It can swing open to the open position at once. At this time, since the slider 11 is prevented from rapidly moving downward due to the frictional resistance between the braking body 18 and the guide rail 12, the window 2 is not suddenly opened. Further, at the lower end of the stroke of the slider 11, the rubber block 13a receives the lower end of the slider body 16 and absorbs the movement energy, so that the window 2 can be stopped slowly.

  As described above, when the slider 11 moves downward beyond the ventilation position, the release tool 28 provided on the upper portion of the engagement piece 17 also moves downward along with the slider 11. Therefore, as shown in FIG. 16, the release tool 28 is brought into contact with the curved surface of the passive portion 53 and is pushed in while elastically deforming the entire passive portion 53 toward the inside of the guide rail 12. As a result, the latching claw 54 that has been latched by the notch edge of the latching groove 51 until then moves inward of the rail and is detached from the latching groove 51 as indicated by an arrow. At the same time, the sliding block 40 is pushed up by the spring 45 to return to the standby position, and the catching lever 33 released from the restraint by the switching tool 35 returns to the engageable state. At this time, the pawl 54 moves along the inner surface of the receiving wall 14. As described above, the ventilation stay that has been fully opened can be automatically switched to the ventilation state.

  As shown in FIG. 10, the engagement piece 17 in the fully opened state is below the capture lever 33, and the release tool 28 is positioned in the vicinity of the claw 37 of the capture lever 33. When the window 2 is closed from this state, the upper edge of the engagement piece 17 comes into contact with the curved edge on the lower surface side of the claw 37, and the catch lever 33 is pushed down against the spring 34 while getting over. At the same time that the lower edge of the engagement piece 17 gets over the claw 37, the catch lever 33 returns and swings so that the claw 37 engages with the engagement hole 26. Change. Note that, in the ventilation position, the operation lever 41 can be directly pushed down to disengage the capture lever 33.

  According to the ventilation stay in which the slider 11, the capture lever 33, the spring 34, the switching tool 35, and the reset mechanism lock body 51 that constitute the restriction mechanism are incorporated in the guide rail 12, all the components of the ventilation stay are included. Since it can be handled as a single unit part, it is possible to eliminate missing parts and differences between left and right sides when shipping the ventilation stay, and to install the guide rail 12 and the check arm 10 at the construction site. Since there is no need to additionally process notches or grooves in the opening frame 1 or the window frame, the labor required for assembling the ventilation stay can be greatly reduced.

  FIG. 17 shows another embodiment of the regulating mechanism. There, the lever 60 was fixed to the sliding block 40 of the switching tool 35, the lever 60 was placed along the inner side surface of the opening frame 1 on the indoor side, and the operation knob 61 was fixed there. According to this embodiment, the operation knob 61 can be operated up and down to switch between the operating position and the standby position in both cases where the window 2 is open and ventilated. Since the operation piece 41, the guide frame 57, the slide piece 58, etc. in the above embodiment can be omitted to simplify the structure of the operation body 56, the overall cost of the ventilation stay can be reduced. Since others are the same as the previous embodiment, the same reference numerals are assigned to the same members, and descriptions thereof are omitted. The same applies to the following embodiments.

  18 and 19 show another embodiment of the reset mechanism. There, the lock lever 50 and the switching tool 35 are used to form the lock body 50, and the engagement piece 17 also serves as the release tool 28. Specifically, a relief groove 70 is formed on one side of the capture lever 33 facing the bottom wall of the guide rail 12, and an engagement claw 71 is formed at the lower end of the relief groove 70. An engagement surface 74 that receives the engagement hole 26 and a partial arc-shaped passive surface 75 are formed on the upper portion of the capture lever 33. The engaging surface 74 corresponds to the claw 37 in the previous embodiment, and the passive surface 75 corresponds to the passive portion 53.

  An operating arm 72 that protrudes into the escape groove 70 protrudes from the lower portion of the sliding block 40 of the switching tool 35, and an engaging recess 73 is formed near the lower end of the operating arm 72 so that the engaging claw 71 falls and engages. The engagement recess 73 and the previous engagement claw 71 constitute a lock body 50. A slope 77 that swings the capture lever 33 is formed at the lower end of the operation arm 72.

  As shown in FIG. 18, the catch lever 33 in the normal state is biased clockwise by a spring 34 to maintain the engagement posture. The lock body 50 is engaged with the engagement recess 73 and the engagement claw 71 to hold the capture lever 33 in the disengagement posture (the state shown in FIG. 19A) and the engagement recess 73. It is possible to switch to the unlocking posture (the state shown in FIG. 19B) in which the catch claw 71 is separated and the capture lever 33 is returned to the engaging posture. Reference numeral 76 denotes an operation protrusion formed integrally with the sliding block 40 and corresponds to the operation piece 41 in the previous embodiment. Others are the same as the previous embodiment.

  When the window 2 is opened from the closed state, the slider 11 and the engagement piece 17 (not shown) move downward, the engagement hole 26 comes into contact with the engagement surface 74 of the capture lever 33, and the window 2 is ventilated. Restrict opening at the position. As shown in FIG. 19A, when the operating body 56 is pushed down and the switching tool 35 is pushed down from the standby position to the operating position with the slide piece 58, the catch lever 33 is biased by the spring 34 with the operating arm 72. Against this, it swings and displaces counterclockwise and switches to the disengagement posture. At the same time, the engaging claw 71 falls into the engaging recess 73, switches the lock body 50 to the locked state, and fixes and holds the switching tool 35 in the operating position.

  In the above state, since the engagement surface 74 is outside the movement locus of the engagement piece 17, the window 2 can be opened from the closed position to the fully opened position through the ventilation position. When the upper wall of the engagement piece 17 passes the outer surface of the capture lever 33, as shown in FIG. 19B, the capture lever 33 is swung counterclockwise by contacting the passive surface 75 from above. Walk through. Therefore, the engagement between the engagement claw 71 and the engagement recess 73 is released, and the switching tool 3 is pushed back to the standby position by the spring 45. That is, the switching tool 35 is reset from the operating position to the standby position by using the opening movement operation of the engaging piece 17 (the operating tool 28) beyond the ventilation position, and the capture lever 33 is reset to the engaging posture. When the fully opened window 2 is closed, the engaging piece 17 comes into contact with the passive surface 75 from below and passes through the capturing lever 33 while swinging it counterclockwise. Can be maintained.

In the case of a small shape of the window may be placed ventilation stays only on either the left and right window 2. The ventilation stay of the present invention can be applied to a rotating window that opens and closes around a horizontal axis in addition to an inward-turning window. The switching tool 35 does not need to have the structure described in the embodiment, and may be a structure that can be switched between two positions of the standby position and the operating position and can hold at least the operating position.

  The lock body 50 does not need to be formed of a leaf spring, and can be formed of, for example, a press fitting or a plastic molded product made of a stainless plate material. In this case, the lock body 50 is pivotally supported so as to be able to swing inward and outward, and is then urged to swing outwardly by the spring. The release tool 28 can be formed as an independent part separate from the engagement piece 17. The lock body 50 only needs to be provided between the guide rail 12 and the switching tool 35. For example, the lock body 50 is disposed on the outer surface of the guide rail 12 and is configured to engage and hold the sliding block 40 in the operating position. Can do. When the receiving wall 14 is not provided on the guide rail 12, a protrusion (holding portion) for receiving the hooking claw 54 can be provided instead of the hooking groove 51. It is not necessary to provide a pair of the latching groove 51 and the latching claw 54.

It is a vertical front view of the ventilation stay principal part in a ventilation state. It is a front view of an interior fall window. It is a side view of the ventilation stay of the state which opened the window to the ventilation position. It is a side view of the ventilation stay of the state which opened the window to the full open position. It is a side view of the ventilation stay of the state which closed the window. It is a disassembled perspective view of a slider. It is a cross-sectional plan view of a slider. It is a side view of an operation body. It is a vertical front view of the ventilation stay of the state which closed the window. It is a vertical front view of the ventilation stay of the state which opened the window fully. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is sectional drawing of the state which locked the release tool with the lock body. It is a side view which shows the related structure of a lock body and a guide rail. It is CC sectional view taken on the line in FIG. It is sectional drawing which shows the lock release operation | movement of a lock body. It is sectional drawing which shows another Example of an operation body. It is a longitudinal cross-sectional view which shows another Example of a reset mechanism. It is a longitudinal cross-sectional view which shows operation | movement of a reset mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Opening frame 2 Window 9 Bracket 10 Checking arm 11 Slider 12 Guide rail 16 Slider main body 17 Engagement piece 28 Release tool 33 Capture lever 35 Switching tool 45 Spring 50 Lock body 51 Locking groove 53 Passive part 54 Locking claw 56 Operation body 71 engaging claw 73 engaging recess

Claims (5)

A ventilation stay of an inward window provided between the window (2) and the opening frame (1) and capable of restricting the opening of the window (2) at the ventilation position and the fully open position;
A check arm (10) whose one end is fixed to the side surface of the window (2), a guide rail (12) attached to the opening frame (1), and the other end of the check arm (10) are connected, and a guide The slider (11) is supported by the rail (12) so as to be slidable up and down, and is slid up and down as the window (2) is opened and closed. The slider (11) is incorporated into the guide rail (12). Including a regulation mechanism that regulates movement at the ventilation position ,
The regulation mechanism is configured to be switchable between a ventilation state that restricts the vertical slide movement of the slider (11) in the ventilation position and a fully open state that allows the slider (11) to move to the fully open position. ,
A restricting mechanism is disposed near one end of the guide rail (12), and the capture lever (33) that engages and captures the slider (11) in the ventilation position, and the capture lever (33) is oscillated and biased to the engagement posture. A first spring (34) that performs switching, and a switching tool (35) that switches the capture lever (33) from the engaged posture to the disengaged posture,
The switching tool (35) is supported so as to be reciprocally displaceable between an operating position where the catch lever (33) is disengaged and a standby position where the catch lever (33) is retracted outside the swing region . The spring (45) is urged to return to the standby position,
A reset mechanism that returns the restriction mechanism switched to the fully open state to a ventilation state, and the reset mechanism positions the switch (35) in the operating position against the biasing force of the second spring (45). A lock body (50) to be held, and a release tool (28) that moves with the slider (11) and releases the position holding of the lock body (50) with respect to the switching tool (35),
In a state in which the capture lever (33) is switched to the disengagement posture with the switching tool 35, the window (2) can be fully opened,
When the slider (11) moves in the opening direction beyond the ventilation position, the lock body (50) is released by the release tool (28) so that the position holding state of the switching tool (35) by the lock body (50) is released. 50) A ventilating stay for an inward- turning window, wherein the switching tool (35) is automatically returned to the standby position when the unlocking operation is performed . The slider (11) includes a slider body (16), and an engagement piece (17) that moves along with the slider body (16) and is engaged and captured by the capture lever (33).
The ventilation stay for an inward-turning window according to claim 1, wherein the release tool (28) is provided integrally with the engagement piece (17). A switching tool (35) and a capture lever (33) are disposed adjacent to one end of the guide rail (12),
Pawl said locking member provided on the switching換具(35) (50), the passive portion protruding to the outer surface of the guide rail (12) and (53), is protruding formed on the free end of the passive unit (53) ( 54)
The inner surface of the guide rail (12) is formed with a hooking groove (51) for disengaging the pawl (54),
Locking body (50) comprises a locking posture can position holding the operating position the switching換具(35) in sealed hanging the lock grooves (51), is unlocked operated release tool 28 from the lock grooves (51) The ventilation stay for an inward-turning window according to claim 1 or 2, wherein the ventilation stay is configured to be switchable to a separate unlocking posture. A switching tool (35) and a capture lever (33) are disposed adjacent to one end of the guide rail (12),
The lock body (50) is provided with an engagement recess (73) and an engagement claw (71) which are provided on the capture lever (33) and the switching tool (35) and can be engaged with each other.
The lock body (50) includes a lock posture in which the engagement recess (73) and the engagement claw (71) are engaged to hold the capture lever (33) in the engagement release posture, and the engagement recess (73). The engagement claw (71) is separated and is configured to be switchable to a lock release posture for returning the capture lever (33) to the engagement posture,
The ventilating stay for an inward-turning window according to claim 1 or 2, wherein the lock body (50) switched to the lock posture is configured to be unlocked by the release tool (28) via the catch lever (33). . One end of the check arm (10) is connected to the side surface of the window (2) via the bracket (9), and the guide rail (12) is fixed to the inner side surface of the opening frame (1),
The inversion window according to claim 1, 2, 3 or 4, wherein the operating body (56) for switching the switching tool (35) in a state in which the window (2) is closed is assembled on the indoor side of the window (2). Ventilation stays.

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