JP2024139302A - Window opening/closing lock device, window sash and wall structure - Google Patents

Abstract

To provide a window opening//closing locking device capable of releasing a locked state by removing a locking mechanism from an indoor side even in a state of closing a sash when an operation failure occurs in the locking mechanism.SOLUTION: A locking mechanism 60 provided on the window frame side is includes a cam mounting plate 61 which comes into contact with and separates from one end of an interlocking member 4 for moving a lock pin in a non-coupled state, a locking/unlocking cam 62 which is pivotally attached to the cam mounting plate 61, a cam receiving bracket 63 having a cam guide section, and a tension coil spring 64 which applies an urging force for moving the interlocking member 4 to the cam mounting plate 61. The cam receiving bracket 63 is held at a closed position of a sash 20 via a take-out bracket 66 which is fixed to the indoor side from the closed position of the sash 20 through a male screw 542 as cam receiving fixing means, and when the male screw 542 is removed, the take-out bracket 66 and the cam receiving bracket 63 become movable in the direction in which the take-out bracket and the cam receiving bracket are separated from the interlocking member 4, thus preventing interference with the unlocking mechanism.SELECTED DRAWING: Figure 11

Description

The invention disclosed in this application relates to a locking device that can be applied to a window sash in which a paper screen is set into a window frame and opened and closed to the outside. More specifically, the invention relates to a window opening/closing locking device equipped with a mechanism that automatically locks the paper screen when it is closed, and to a window sash and wall structure equipped with the window opening/closing locking device.

There are wall structures that are equipped with window sashes, such as casement windows, sliding windows, projection windows, louver windows, and awning windows, which open and close a shoji screen set into a window frame to the outside. For this type of window sash, a locking device is known that engages a shoji-side engagement member attached to the shoji screen's door frame with a frame-side engagement member attached to the window frame material on the door edge side to restrain the shoji screen in a closed position. For example, Patent Documents 1, 2, 3, etc. disclose a window opening/closing locking device (locking device) equipped with a mechanism in which a shoji-side receiving device (engagement frame) with a groove hole bent into an approximately J shape is attached to multiple locations on the projecting part of the door end frame as a shoji-side engaging member for a vertical sliding window, while multiple lock pins (engagement pins) that can be engaged and disengaged with the shoji-side receiving device and a thin interlocking member (lock pin connecting bar) that connects them along the vertical frame on the door end side are attached so that they can move up and down as frame-side engaging members, and when the shoji is closed, a locking/unlocking lever installed on the indoor side of the window frame is operated to move the lock pin up and down to engage with the shoji-side receiving device.

However, the window opening/closing locking device described above is provided separately from the opening/closing mechanism, such as the operator that opens and closes the screen, so when locking the window, a two-step procedure is required: first, the operator must close the screen, and then the lock/unlock lever of the window opening/closing locking device must be operated to lock it. With this configuration, there is room for improvement in terms of crime prevention, as it is possible that the operation of the window opening/closing locking device may be forgotten after the screen is closed. Therefore, the applicant has invented a window opening/closing locking device that automatically locks when the screen is closed, and has disclosed it in Patent Document 4. An overview of this device will be explained with reference to Figures 1 to 4.

The window opening/closing lock device 1 is incorporated into the window sash of a vertical sliding window, for example, as shown in Figure 1. In this window sash, the window frame 10 and the shoji screen 20 set into the frame are connected via an opening/closing mechanism 30 that includes a friction stay 301, an operator 302, a handle 303, etc.

The window opening/closing lock device 1 is composed of a receiving device 2 attached to the projecting portion of the leading edge frame 201 of the shoji screen 20, a locking pin 3 attached via an interlocking member 4 to the projecting portion of the vertical frame 101 of the window frame 10 that overlaps the leading edge frame 201, and an unlocking mechanism 5 that moves the locking pin 3 and the interlocking member 4 along the material length direction (up-down direction) of the vertical frame 101 to the unlocking side (unlocked position) and a locking mechanism 6 that moves them to the locking side (locked position).

As shown in FIG. 2, the receiving device 2 attached to the shoji screen 20 side has a slot 21 into which the lock pin 3 attached to the vertical frame 101 side engages and disengages. The slot 21 extends linearly along the length of the door end frame 201, and at its lower end is a lock pin delivery opening 22 that opens to the closed side (indoor side) of the shoji screen 20.

The interlocking member 4 is a long, thin material of equal width that is attached to the projected portion of the vertical frame 101 on the door end side via a guide bracket 7 and is held so that it can move up and down in a linear, reciprocating manner along the projected portion of the vertical frame 101. The guide bracket 7 is a short member with an approximately groove-shaped cross section that is attached in a position that overlaps with the receiver 2 when the shoji screen 20 is closed, and a vertically long lock pin guide hole 71 is formed in its front portion to accommodate the lock pin 3 fixed to the interlocking member 4 and move it up and down. In the following explanation, the viewpoint in Figure 2, where the window opening/closing lock device 1 is viewed from inside the window opening, is defined as the "front," and the relative positions of the parts and members and the direction of operation are specified.

An unlocking mechanism 5 that manually moves the interlocking member 4 to an unlocked position is connected near the lower end of the interlocking member 4. The unlocking mechanism 5 comprises a retractable operating lever 51 attached to the interior side of the vertical frame 101 and a crank arm 52 connected to the operating lever 51, and a roughly L-shaped cam groove 53 formed at the tip of the crank arm 52 engages with an operating pin 43 attached to the interlocking member 4. When the operating lever 51 is lifted upward in the illustrated embodiment, the crank arm 52 rotates downward and pushes down the operating pin 43, causing the interlocking member 4 and lock pin 3 to move downward.

The interlocking member 4 is further fitted with a locking mechanism 6 which automatically moves the interlocking member 4 to the locked position when the screen 20 is closed, and is attached to the interlocking member 4 at a distance from the position where the lock pin 3 and the receiver 2 are engaged and disengaged. The locking mechanism 6 is made up of a cam mounting plate 61 as a "cam mounting member" connected to the lower end of the interlocking member 4, a locking/unlocking cam 62 attached to the cam mounting plate 61, a cam receiving bracket 63 as a "cam receiving member" fixed to the vertical frame 101, a tension coil spring 64 as a "biasing member" attached between the cam mounting plate 61 and the cam receiving bracket 63, and a trigger mounting plate 81 and a trigger 82 attached to the door frame 201 of the screen 20.

The cam mounting plate 61 is a thin plate-like member that extends vertically with approximately the same width as the interlocking member 4, with a wider width in the middle. Its upper end is connected to the lower end of the interlocking member 4, and it moves vertically together with the interlocking member 4. A locking/unlocking cam 62 is attached to the middle of the cam mounting plate 61.

As shown enlarged in Figure 3, the locking/unlocking cam 62 has a pivot base 621 that is roughly circular when viewed from the front, a narrow neck 622 that extends below the pivot base 621, an engagement hook 623 that protrudes from the lower part of the neck 622 to the outdoor side, and a passive piece 624 that bends and protrudes from the indoor side edge of the neck 622 to the inside of the opening surface of the window frame 10. The pivot base 621 is pivotally attached to the cam mounting plate 61 via a rivet 626 or the like, so that the entire locking/unlocking cam 62 is held so that it can swing in the indoor and outdoor directions.

The cam receiving bracket 63 has a generally groove-shaped cross section and is screwed to the vertical frame 101 so as to surround the cam mounting plate 61. To avoid interference with these screws, the cam mounting plate 61 has three vertical movement guide holes 611, 612, and 613 extending in the vertical direction. In addition, a tension coil spring 64 is hung near the lower edge of the cam receiving bracket 63 as a biasing member, and the other end of the tension coil spring 64 is hung near the lower end of the cam mounting plate 61. This tension coil spring 64, which is hung on the vertical frame 101 side via the cam receiving bracket 63, applies a biasing force to the cam mounting plate 61 and the interlocking member 4 connected thereto to move them upward.

A window-shaped cam guide 631 is provided on the front of the cam receiver bracket 63, which houses the locking/unlocking cam 62 and moves it up and down from the locked position to the unlocked position. An engaged portion 634 is formed on the outdoor side edge of the lower half of the cam guide 631 for engaging the engaging hook 623 of the locking/unlocking cam 62. The "unlocked position" is when the locking/unlocking cam 62 moves to the lower half of the cam guide 631 and engages the engaging hook 623 with the engaged portion 634, and the "locked position" is when the engaging hook 623 is disengaged from the engaged portion 634 and the locking/unlocking cam 62 moves to the upper half of the cam guide 631.

On the other hand, the trigger mounting plate 81 attached to the shoji 20 side has its middle part bent so as to be perpendicular to the projection of the door end frame 201, forming a trigger pressing piece 812. A trigger 82 is pivotally attached to the upper part of the trigger mounting plate 81 via a pin 83. The trigger 82 is held so that it can only swing indoors from its outdoor side edge by contacting the trigger pressing piece 812 of the trigger mounting plate 81. A push piece (referred to as a "response piece" in Patent Document 1) 821 is formed on the indoor side edge of the trigger 82, extending perpendicular to the projection of the door end frame 201. The trigger mounting plate 81 is positioned so that the push piece 821 abuts against the passive piece 624 of the locking/unlocking cam 62 that is engaged in the unlocked position when the shoji 20 is closed.

Figures 4 and 5 show the operation of each part when the shoji screen 20 is opened and closed. When the shoji screen 20 is open, as shown in Figure 4(a), the locking/unlocking cam 62 moves to the lower half of the cam guide portion 631, and the engaging hook 623 engages with the engaged portion 634. Therefore, the cam mounting plate 61 to which the locking/unlocking cam 62 is attached, and the interlocking member 4 and lock pin 3 connected thereto are also temporarily fixed at this height (unlocked position).

When the shoji screen 20 is closed in this state, as shown in Figure 4 (b), the pushing piece 821 of the trigger 82 attached to the shoji screen 20 comes into contact with the passive piece 624 of the locking/unlocking cam 62. At this time, the receiver 2 attached to the top of the shoji screen 20 is in a position to receive the lock pin 3 into its lock pin delivery opening 22, as shown in Figure 2 (b). When the shoji screen 20 is closed a little further, as shown in Figure 4 (c), the trigger 82 pushes the locking/unlocking cam 62 into the interior, and the engaging hook 623 of the locking/unlocking cam 62 disengages from the engaged portion 634 of the cam guide portion 631.

Then, as shown in Figures 4(d)-(e), the cam mounting plate 61 is instantly pulled up by the biasing force of the tension coil spring 64. As a result, the interlocking member 4 and lock pin 3 also move upward, and as a result, as shown in Figure 2(a), the lock pin 3 enters the back of the groove hole 21 of the receiver 2, making it impossible to open or close the screen 20. In this way, simply by closing the screen 20, the lock pin 3 engages with the receiver 2 in response to contact between the trigger 82 and the locking/unlocking cam 62, and the screen is automatically locked.

When opening the closed shoji screen 20, the operating lever 51 of the unlocking mechanism 5 is manually operated from the locked state shown in Figure 5 (a) to push down the interlocking member 4. Then, as shown in Figures 3 and 5 (b) to (c), the cam mounting plate 61 connected to the interlocking member 4 also descends, and the locking/unlocking cam 62 moves to the lower half of the cam guide portion 631, engaging the engaging hook 623 with the engaged portion 634. When the interlocking member 4 is temporarily fixed in the unlocked position in this way, the lock pin 3 also comes to the same height as the lock pin delivery port 22 of the receiver 2, so the shoji screen 20 can be opened as is.

In the state shown in FIG. 5(c), the pushing piece 821 of the trigger 82 is located inside the door relative to the passive piece 624 of the locking/unlocking cam 62, but by opening the shoji screen 20, the pushing piece 821 of the trigger 82 comes into contact with the passive piece 624 of the locking/unlocking cam 62 from inside the door. The reaction force lifts the trigger 82, as shown in FIG. 5(d), and moves outside while rotating so as to climb over the passive piece 624.

After the screen 20 is opened as shown in FIG. 5(e), the interlocking member 4 and the lock pin 3 remain temporarily locked in the unlocked position by the lock/unlock cam 62 until the screen 20 is closed again.

With the window opening/closing lock device 1 configured in this way, the interlocking member 4, which is attached to the window frame 10 and temporarily fixed in the "unlocked position," moves to the "locked position" in conjunction with an operation to close the screen 20 by an operator, etc., and the lock pin 3 fixed to the interlocking member 4 instantly engages with the receiving device 2 attached to the screen 20, thereby keeping the screen 20 in a locked state. This makes it possible to prevent situations such as forgetting to lock the screen 20 after it has been closed.

JP 2002-188336 A JP 2006-022515 A JP 2018-104947 A Patent No. 6977976

With regard to the window opening/closing lock device 1 disclosed in Patent Document 4, the applicant has discovered that, for example, when the shoji screen 20 is open, the locking mechanism 6 may malfunction if dust or leaves get caught in the moving parts due to wind and rain, or if a tree branch is thrust into the door from the outside. If the operating lever 51 becomes inoperable while the shoji screen 20 is closed, the locking mechanism 6 cannot be returned to the unlocked position, and the shoji screen 20 remains closed. When the shoji screen 20 is closed, the main parts of the unlocking mechanism 5 and locking mechanism 6 are hidden between the vertical frame 101 and the door frame 201, making it extremely difficult to disassemble and repair them.

The invention disclosed in this application was conceived to address such situations, and provides an improved window opening/closing locking device that allows the locking mechanism to be removed from the indoor side and released from the locked state even when the screen is closed if the locking mechanism malfunctions. It also provides a window sash that is opened and closed by the window opening/closing locking device, and a wall structure that includes the window sash.

In order to achieve the above-mentioned object, the window opening/closing lock device of the invention disclosed in this application has a receiving device attached to the projected portion of the door frame of a shoji screen that is set into a window frame and opened and closed to the outside, and a lock pin that engages and disengages with the receiving device is attached to the projected portion of the window frame that overlaps with the door frame via an interlocking member that moves along the material length direction of the window frame, and when the shoji screen is closed, the interlocking member moves to a "locked position" where the lock pin engages with the receiving device to lock the shoji screen, and when the interlocking member moves to an "unlocked position" where the lock pin is removed from the receiving device to unlock the shoji screen, the window frame has a locking mechanism that applies a biasing force to the interlocking member in a direction that moves it toward the locked position, and when the shoji screen is closed, moves the interlocking member from the unlocked position to the locked position by a pressing force from a trigger attached to the door frame of the shoji screen, and a locking mechanism that moves the interlocking member from the unlocked position to the locked position by a pressing force from a trigger attached to the door frame of the shoji screen to a position other than the closed position of the shoji screen. An unlocking mechanism is provided that moves the interlocking member from the locked position to the unlocked position by operating an unlocking operation member attached to the indoor side. The locking mechanism is equipped with a cam mounting member that moves in the material length direction of the window frame and engages and disengages from one end of the interlocking member in an uncoupled state, a locking/unlocking cam that is pivotally attached to the cam mounting member and swings indoors and outdoors, a cam receiving member having a cam guide portion to which the locking/unlocking cam can be engaged and disengaged, and a biasing member that applies a biasing force to the cam mounting member in a direction that moves the interlocking member to the locked position. The cam receiving member is held in the closed position of the screen via a support bracket that is removably fixed by a cam receiving fixing means to a projection portion of the window frame that is located on the indoor side of the closed position of the screen. When the cam receiving fixing means is released, the support bracket and the cam receiving member can move in a direction away from the interlocking member and do not interfere with the unlocking mechanism.

The unlocking mechanism further comprises an operation box attached to the window frame on the indoor side of the closed position of the screen, and an operation slider as the unlocking operation member slidably assembled within the operation box, and the operation slider and the interlocking member are connected so as to move together via an unlocking operation arm, and the cam receiver fixing means also serves as a fixing means for the operation box to the window frame.

Furthermore, the cam receiver fixing means is configured with a single male screw that is screwed into the window frame, and a screw cover that hides the head of the male screw is removably attached to the operation box.

Furthermore, a window opening/closing detection device using a magnetic proximity sensor is attached to the window frame adjacent to the operation box, and a magnet that serves as the detection body of the magnetic proximity sensor is built into the operation slider so as not to be visible from the outside of the operation slider. The magnetic proximity sensor detects the approach and separation state of the magnet, thereby determining the position of the interlocking member that moves integrally with the operation slider and detecting the open/close state of the screen.

The window sash of the invention disclosed in this application is characterized as having a window frame and a sliding screen that are locked and unlocked by the window opening and closing lock device described above. The wall structure of the invention disclosed in this application is also characterized as having the window sash described above.

According to the window opening/closing lock device configured as described above, the cam receiving member that constitutes the locking mechanism is held via a support bracket that is fixed by a cam receiving fixing means to the projecting portion of the window frame that is located on the indoor side of the closed position of the shoji screen. Therefore, even if the locking mechanism malfunctions when the shoji screen is closed, the cam receiving fixing means can be released to separate the cam receiving member hidden between the window frame and the door frame from the interlocking member. This makes it possible to freely operate the unlocking mechanism, and to move the interlocking member to the unlocked position to open the shoji screen. If the shoji screen can be opened, the locking mechanism can be easily disassembled and repaired, so the window opening/closing lock device can be used safely for a long period of time.

1 is a perspective view showing a schematic configuration of a vertical sliding window to which a conventional window opening/closing lock device disclosed in Patent Document 1 is attached. 2A and 2B are front views showing the overall configuration of the conventional window opening/closing lock device as viewed from the inside of the opening surface of the window in FIG. 1, in which (a) shows a locked state and (b) shows an unlocked state. 4 is an enlarged view illustrating an engagement operation between a locking/unlocking cam and a cam guide portion in the conventional window opening/closing lock device. FIG. 1 is an explanatory diagram showing a step-by-step operation of automatically locking a door by a locking mechanism when the door is closed in the conventional window opening/closing lock device. FIG. 1 is an explanatory diagram showing a step-by-step operation of the conventional window opening/closing lock device when a sliding door locked by a locking mechanism is opened. FIG. 1 is a front view showing a schematic configuration of an unlocking mechanism and a locking mechanism in a window opening/closing lock device of the invention disclosed in the present application. 7 is a cross-sectional view taken along the line BB in FIG. 6. 7 is a perspective view of a main part of the window opening/closing lock device shown in FIG. 6 in a normal locked state. 7 is a perspective view of a main part of the window opening/closing lock device shown in FIG. 6 in a normal unlocked state. 7 is an exploded perspective view showing an assembly structure of an operation box and an operation slider in the window opening/closing lock device shown in FIG. 6. FIG. 11 is a perspective view showing a procedure 1 for unlocking the window opening/closing lock device shown in FIGS. 6 to 10 in an emergency. FIG. 12 is a perspective view showing a procedure 2 for unlocking the window opening/closing lock device in an emergency, following FIG. FIG. 13 is a perspective view showing step 3 for unlocking the window opening/closing lock device in an emergency, following FIG. 1 is a perspective view showing the configuration of a trigger and a trigger mounting plate attached to the shoji side in the window opening/closing lock device of the invention disclosed in the present application. FIG.

The following describes an embodiment of the invention disclosed in this application with reference to the drawings. Note that in the embodiment described below, components and parts that have substantially the same functions or actions as the conventional window opening/closing lock device 1 (FIGS. 1 to 5) described in the Background Art section are given the same reference numerals, and their description will be simplified.

The window opening/closing lock device 11 according to the invention disclosed in this application is installed, for example, in the area A enclosed by the two-dot chain line in a vertical sliding window shown in FIG. 1, in place of the conventional unlocking mechanism 5 and locking mechanism 6. The opening/closing mechanism 30 that opens and closes the shoji screen 20 set into the window frame 10 can be configured by appropriately selecting or combining conventionally known mechanisms, and the invention disclosed in this application does not particularly limit the detailed configuration.

The window opening/closing lock device 11 is composed of a receiving device 2 attached to the projected portion of the door end frame 201 of the shoji screen 20, an interlocking member 4 attached via a guide bracket 7 to the projected portion of the vertical frame 101 of the window frame 10 that overlaps the door end frame 201 so as to be movable up and down, a locking pin 3 fixed at a predetermined position of the interlocking member 4, and an unlocking mechanism that moves the locking pin 3 and interlocking member 4 to the unlocking side (unlocked position) along the material length direction (up and down direction) of the vertical frame 101 and a locking mechanism that moves them to the locking side (locked position). The configurations of the receiving device 2, locking pin 3, interlocking member 4, and guide bracket 7 are not significantly different from those described in the Background Art section, but in the invention disclosed in this application, the engagement and disengagement form between the receiving device 2 and the locking pin 3 is not particularly limited.

Figures 6 to 10 show the schematic configuration and operating state of the unlocking mechanism 50 and locking mechanism 60 that constitute the main part of the window opening/closing lock device 11. Figure 6 is a front view of the unlocking mechanism 50 and locking mechanism 60 that are assembled in the enclosed part A in Figure 1, and Figure 7 is a cross-sectional view taken along the line B-B in Figure 6. Figure 8 is a perspective view of the main part showing the normally locked state (when the screen 20 is closed and locked), Figure 9 is a perspective view of the main part showing the normally unlocked state (when the screen 20 can be opened and closed), and Figure 10 is an exploded perspective view showing the assembly structure of the operation box and operation slider.

The unlocking mechanism 50, which manually moves the interlocking member 4 to the unlocked position, is connected to the lower end of the interlocking member 4. The example unlocking mechanism 50 includes an operation box 54 attached to the vertical frame 101 on the indoor side of the closed position of the shoji screen 20, and an operation slider 55 assembled in the operation box 54 and serving as an "unlocking operation member" that slides up and down.

The operation box 54 is a vertically long box with an opening on the front side, and its main body except for the periphery of the front side is embedded in an opening formed in the projection of the vertical frame 101. The operation box 54 is fixed to the back of the vertical frame 101 by two male screws 541, 542 that penetrate from the front side to the back side at two points on the top and bottom. The operation slider 55 has an operation knob 551 protruding from the middle part in the vertical direction on the front side, and a small block-shaped magnet 56 is fitted on the upper side (lock position side) of the operation knob 551. This magnet 56 is a neodymium magnet or other permanent magnet, and serves as the detection body of the magnetic proximity sensor described below.

Guide plates 57, 57 that facilitate smooth vertical movement are placed on the front side of the upper and lower parts of the operation slider 55. Approximately half of each of these guide plates 57 appears and disappears above and below the operation box 54 from the rear side of the projection of the vertical frame 101 as the operation slider 55 moves up and down. The upper guide plate 57 also acts to hide the magnet 56 attached to the operation slider 55 so that it is not visible from the outside. The surface of the lower guide plate 57 has an inverted triangular graphic symbol indicating the direction of the unlocking operation. Each guide plate 57 has a screw insertion hole 571 with a larger diameter than the head of the male screws 541, 542 to allow the male screws 541, 542 that secure the operation box 54 to the vertical frame 101 to be attached and detached. After the operation box 54 is fixed to the vertical frame 101, these screw insertion holes 571 are hidden by removable screw covers 58 that are placed on the top and bottom of the operation box 54 from the front side.

The mechanism of the operation slider 55 protrudes from the rear side of the operation box 54, and an unlocking operation arm 59 is attached to this mechanism. This unlocking operation arm 59 is connected to the mechanism of the operation slider 55 and does not rotate. The unlocking operation arm 59 is a thin plate-like member that extends to the outside through a slit 103 formed in the visible part of the middle part of the vertical frame 101, and its end is screwed to the lower end of the interlocking member 4. By integrally connecting the operation slider 55 and the interlocking member 4 via this unlocking operation arm 59, when the operation slider 55 is manually pushed down, the interlocking member 4 and the lock pin 3 can also be lowered in conjunction with it.

A window opening/closing detector 9 incorporating a detection element of a magnetic proximity sensor is attached to the projecting portion of the vertical frame 101 adjacent to the upper side of the operation box 54. This window opening/closing detector 9 detects the contact/separation state of the magnet 56 attached to the operation slider 55, thereby determining whether the interlocking member 4, which moves integrally with the operation slider 55, is in the locked or unlocked position. In this way, the open/closed state of the shoji screen 20 is automatically detected, and the detection signal is sent to a specified security device, etc., thereby improving crime prevention.

In the illustrated embodiment, the unlocking operation arm 59 is arranged at an angle when viewed from the front, but the extension direction of the unlocking operation arm 59 can be designed appropriately depending on the relative relationship between the mounting position of the operation box 54 and the screw fastening position to the interlocking member 4. In addition, the unlocking mechanism 5 (see Figure 2) that uses the operating lever 51 and crank arm 52 described in the Background Art section can also be used as an unlocking mechanism that manually pushes down the interlocking member 4. In this unlocking mechanism 5, the operating lever 51 corresponds to the "unlocking operation member", and the crank arm 52 essentially functions as the unlocking operation arm 59.

A locking mechanism 60 is provided below the interlocking member 4, which automatically moves the interlocking member 4 to the locked position when the screen 20 is closed. The essential part of the invention described in the claims of this application lies in the configuration and operation of this locking mechanism 60.

The locking mechanism 60 is composed of a cam mounting plate 61 as a "cam mounting member" that is positioned below the interlocking member 4 and moves up and down along the vertical frame 101, a locking/unlocking cam 62 attached to the cam mounting plate 61, a cam receiving bracket 63 as a "cam receiving member" that is fixed to the vertical frame 101, a tension coil spring 64 as a "biasing member" attached between the cam mounting plate 61 and the cam receiving bracket 63, a trigger mounting plate 810 and a trigger 820 attached to the shoji 20 side, etc.

The cam mounting plate 61 is a member that is substantially the same as that described in the Background section with reference to Figures 2 and 3, and the shape and swinging form of the locking/unlocking cam 62 attached to its middle part are also the same as in the conventional case. However, in the invention disclosed in this application, the upper end of the cam mounting plate 61 is not connected to the lower end of the interlocking member 4, but is held so that it can be brought into and out of contact with the lower end of the interlocking member 4.

The cam receiving bracket 63 is also substantially the same as that described in the Background Art section with reference to Figures 2 and 3, and the shape of the cam guide 631 formed on its front portion, the engagement form of the locking/unlocking cam 62 with the cam guide 631, the action of the biasing member (tension coil spring 64) attached between the cam receiving bracket 63 and the cam mounting plate 61, etc. are the same as in the conventional case. However, in the invention disclosed in this application, the cam receiving bracket 63 is not directly screwed to the vertical frame 101. The cam receiving bracket 63 has an L-shaped cross section rather than a groove-shaped cross section, and its front portion is connected only to the cam mounting plate 61 via a rivet 65 that slidably engages with the up-down movement guide holes 612, 613 formed in the cam mounting plate 61.

The cam receiver bracket 63 has a support bracket 66 that extends toward the interior of the room and is connected to the indoor side edge of the front part of the bracket 63 by a fixing means such as a screw. The support bracket 66 extends to the rear side of the operation box 54 through a slit 103 formed in the front part of the vertical frame 101, and is fixed to the vertical frame 101 together with the operation box 54 by a lower male screw 542 that fixes the operation box 54 to the vertical frame 101. In other words, the single male screw 542 that fixes the operation box 54 to the vertical frame 101 constitutes a "cam receiver fixing means" for fixing the cam receiver bracket 63 to the vertical frame 101 via the support bracket 66. By adopting such a cam receiver fixing means, the base point for holding the cam receiver bracket 63 in a predetermined position can be moved indoors from the closed position of the shoji screen 20.

The window opening/closing lock device 11 configured as described above can release the locked state by following the procedure below, even if the locking mechanism 60 malfunctions while the screen 20 is closed.

Step 1: In the locked state, the operation slider 55 is in the raised position. Furthermore, the cam mounting plate 61 and the locking/unlocking cam 62 are also held in the raised position by the biasing force of the tension coil spring 64 with respect to the cam receiving bracket 63, which is fixed in a fixed position regardless of the locked/unlocked state. In this state, first remove the screw cover 58 on the lower side of the operation box 54 as shown in FIG. 11. Then, the head of the lower male screw 542 can be seen in the screw insertion hole 571 of the lower guide plate 57, so loosen and remove the male screw 542.

Step 2: When the lower male screw 542 that constitutes the cam receiver fixing means is removed, as shown in FIG. 12, the extension bracket 66 loses its holding force on both the vertical frame 101 and the operation box 54, and slides down several centimeters together with the cam receiver bracket 63 under its own weight. At this time, the cam mounting plate 61 and the locking/unlocking cam 62, which are held in a raised position relative to the cam receiver bracket 63, also move down together with the cam receiver bracket 63. As a result, the upper end of the cam mounting plate 61 separates from the lower end of the interlocking member 4.

Step 3: When the cam mounting plate 61 moves away from the lower side of the interlocking member 4, the upward biasing force applied to the interlocking member 4 in the locked state disappears, and the unlocking mechanism 50 becomes free to operate. Then, as shown in FIG. 13, by manually pushing down the operation slider 55, the interlocking member 4 also moves down and moves to the unlocked position. This makes it possible to push open the shoji screen 20 from the indoor side. In other words, the lower male screw 542 that fixes the operation box 54 to the vertical frame 101 functions as a member for forcibly releasing the cam receiver fixing means in an emergency due to its ease of attachment and detachment. Note that instead of the male screw shown as an example, it is also possible to adopt a mechanical means that can be easily attached and detached by an appropriate engagement and detachment mechanism or clamping mechanism.

When the shoji screen 20 is open, the entire locking mechanism 60 on the window frame 10 side can be easily removed by pulling it out to the outside, and the components of the removed locking mechanism 60 can be repaired or replaced as appropriate. The extension bracket 66 of the locking mechanism 60 that has been restored to function can be inserted into the slit 103 of the vertical frame 101 from the outside, the cam receiving bracket 63 is properly aligned, and the extension bracket 66 is fixed to the operation box 54 and the vertical frame 101, making it usable again. In this way, the window opening/closing lock device 11 can be used safely for a long period of time.

As a component of the locking mechanism 60 on the shoji screen 20 side, a trigger 820 is attached to the door frame 201 of the shoji screen 20 via a trigger mounting plate 810. The locking mechanism 60 described above is activated when the trigger 820 pushes the locking/unlocking cam 62 when the shoji screen 20 is closed. Figure 14 shows the configuration of the trigger mounting plate 810 and trigger 820 employed in the window opening/closing lock device 11 of the invention disclosed in this application.

The trigger mounting plate 810 is a thin plate-like member that is roughly U-shaped when viewed from the front, and is equipped with fixed pieces 811 that extend to the outdoors from two points, top and bottom, on the outdoor side edge, and an adjustment base piece 814 that is bent from the upper part of the indoor side edge so as to be perpendicular to the projection part of the door end frame 201 and projects toward the vertical frame 101. Each fixed piece 811 is formed with a long hole-shaped fixing hole 813 that extends in the indoor/outdoor direction, and the trigger mounting plate 810 is screwed to the projection part of the door end frame 201 using this fixing hole 813. By making the fixing hole 813 a long hole, the fixing position of the trigger mounting plate 810 can be roughly adjusted in the indoor/outdoor direction according to the position of the cam receiving bracket 63 attached to the vertical frame 101 side and the degree of closure of the shoji screen 20.

The adjustment base piece 814 has a female screw hole that penetrates from the indoor to the outdoor direction, and a male screw 84 as an "adjustment member" is screwed into the female screw hole from the indoor side. With the shoji screen 20 slightly open, the head of the male screw 84 located on the indoor side can be turned from the indoor side with a screwdriver or the like.

A pin joint using a flat-headed pin 83 is provided slightly above the middle of the trigger mounting plate 810, and the trigger 820 is pivoted to this pin 83 so that it can swing in the indoor and outdoor directions. The trigger 820 is a thin plate-like member having a swinging part 822 that is approximately trapezoidal in front view and is pivoted to the pin 83, and a pushing part 823 that is approximately rectangular in front view and extends from the lower part of the swinging part 822 toward the indoor side. A pushing piece 821 is formed on the indoor side edge of the pushing part 823, which is bent so as to be perpendicular to the projection part of the door end frame 201 and protrudes toward the vertical frame 101 side. This pushing piece 821 abuts against the passive piece 624 of the locking/unlocking cam 62 that is engaged in the unlocked position when the shoji screen 20 is closed, pushing the locking/unlocking cam 62 toward the indoor side and moving the locking/unlocking cam 62 to the locked position.

At the top of the indoor side edge of the swinging part 822, a support piece 824 is formed that is bent so as to be perpendicular to the projection part of the door end frame 201 and extends toward the vertical frame 101. This support piece 824 is arranged on the outdoor side of the adjustment base piece 814 of the trigger mounting plate 810 so as to face the adjustment base piece 814. The tip of the male screw 84 screwed into the female screw hole of the adjustment base piece 814 abuts against the support piece 824, thereby restricting the swing range of the trigger 820 toward the indoor side. By turning this male screw 84 to move it in the indoor/outdoor direction and changing the projection dimension toward the outdoor side, the position where the pushing piece 821 of the trigger 820 contacts the locking/unlocking cam 62 (the timing at which the trigger 820 pushes the locking/unlocking cam 62 while the shoji screen 20 is being closed) can be fine-tuned.

In this way, the window opening/closing lock device 11 according to the invention disclosed in this application is equipped with an adjustment means comprising an adjustment base piece 814 attached to the trigger mounting plate 810, an adjustment member (male screw 84) held by the adjustment base piece 814 and moving in the indoor/outdoor direction, and a receiving piece 824 attached to the trigger 820 and abutting against the adjustment member, and is configured so that the timing at which the trigger 820 pushes the locking/unlocking cam 62 when the shoji screen 20 is closed can be fine-tuned by operation from the indoor side. Therefore, the response accuracy of the locking mechanism 60 when locking and unlocking, and the airtightness between the window frame 10 and the shoji screen 20 can be easily optimized.

Although the above is an example of an embodiment of the invention disclosed in this application, the technical scope of this invention should not be interpreted as being limited by the example embodiments, but should be interpreted conceptually based on the claims. When implementing the invention disclosed in this application, the shape, material, arrangement, connection, etc. of the components constituting each part of the device can be modified as appropriate within the scope of obtaining substantially the same operation and effects as the example embodiments.

For the sake of simplicity, in this specification and claims, the direction outside the opening of the window frame is described as the "indoor/outdoor direction," the side on which the shoji screen is opened is described as the "outdoor side," and the side on which it is locked is described as the "indoor side." However, if the window frame is installed in an indoor space, for example, outdoor/indoor should be interpreted as having the above meaning.

The invention disclosed in this application can be widely used not only for vertical sliding windows as exemplified, but also as a locking/unlocking device for windows that use other opening and closing methods.

1 Conventional window opening/closing lock device 100 Window opening/closing lock device 2 Receptacle 3 Lock pin 4 Interlocking member 50 Unlocking mechanism 54 Operation box 541 Male screw 542 Male screw (cam receiver fixing means)
55 Operation slider 551 Operation knob 56 Magnet 57 Guide plate 571 Screw insertion hole 58 Screw cover 59 Unlock operation arm 60 Locking mechanism 61 Cam mounting plate (cam mounting member)
62 Locking/unlocking cam 624 Passive piece 626 Rivet 63 Cam receiving bracket (cam receiving member)
64 tension coil spring (biasing member)
65 Rivet 66 Support bracket 810 Trigger mounting plate 811 Fixing piece 813 Fixing hole 814 Adjustment base piece 820 Trigger 821 Pushing piece 822 Swinging portion 823 Pushing portion 824 Receiving piece 83 Pin 84 Male screw (adjustment member)
9 Window opening/closing detection device 10 Window frame 101 Vertical frame 103 Slit 20 Shoji 201 Door end frame 30 Opening/closing mechanism

In order to achieve the above-mentioned object, the window opening/closing lock device of the invention disclosed in this application has a receiving device attached to the projected portion of the door end frame of a sash that is built into a window frame and opened and closed to the outside, and a lock pin that engages and disengages with the receiving device is attached to the projected portion of the window frame that overlaps with the door end frame via an interlocking member that moves along the material length direction of the window frame, and when the sash is in a closed state, the interlocking member moves to a "locked position" where the lock pin engages with the receiving device, thereby locking the sash, and when the interlocking member moves to an "unlocked position" where the lock pin is removed from the receiving device, thereby unlocking the sash. In the window opening/closing lock device, the window frame is provided with a locking mechanism that applies a biasing force to the interlocking member in a direction that moves it toward the locked position, and when the screen is closed, moves the interlocking member from the unlocked position toward the locked position by a push from a trigger attached to the end frame of the screen, and an unlocking mechanism that moves the interlocking member from the locked position toward the unlocked position by operating an unlocking operation member attached to the indoor side of the closed position of the screen, and the locking mechanism is provided with a cam mounting member that moves in the material length direction of the window frame and comes into contact with and separates from one end of the interlocking member in an uncoupled state, The locking/unlocking cam is pivotally attached to the cam mounting member and swings between indoors and outdoors, a cam receiving member having a cam guide portion with which the locking/unlocking cam can be engaged and disengaged, and a biasing member that applies a biasing force to the cam mounting member in a direction that moves the interlocking member toward the locked position. When the interlocking member moves toward the unlocked position by operating the unlocking operation member, the cam mounting member that abuts against one end of the interlocking member also moves integrally with the interlocking member, and the locking/unlocking cam engages with an engaged portion formed on the cam guide portion of the cam receiving member, and the interlocking member and the cam mounting member are temporarily fixed in the unlocked position. The cam receiving member is held in the closed position of the screen regardless of the locked or unlocked state via an extension bracket that is detachably fixed by a cam receiving fixing means to a projecting portion of the window frame that is located on the indoor side of the closed position of the screen, and when the cam receiving fixing means is released, the extension bracket and the cam receiving member can move in a direction away from the interlocking member together with the cam mounting member and the locking/unlocking cam , so that the interlocking member can be moved toward the unlocked position by operating the unlocking operating member regardless of the operating state of the locking mechanism .

Claims (6)

The shoji screen is set into the window frame and opened to the outside. The receiving device is attached to the front of the door frame.
A lock pin that engages with and disengages from the receiver is attached to the projection portion of the window frame that overlaps with the door frame via an interlocking member that moves along the material length direction of the window frame,
In a window opening/closing lock device, when the door is closed, the interlocking member moves to a "lock position" where the lock pin engages with the receiver to lock the door, and the interlocking member moves to an "unlock position" where the lock pin is removed from the receiver to unlock the door,
The window frame is provided with a locking mechanism that applies a biasing force to the interlocking member in a direction to move it toward the locked position, and when the screen is closed, moves the interlocking member from the unlocked position toward the locked position by a push from a trigger attached to the end frame of the screen, and an unlocking mechanism that moves the interlocking member from the locked position toward the unlocked position by operating an unlocking operation member attached to the indoor side of the closed position of the screen,
The locking mechanism includes a cam mounting member that moves in the material length direction of the window frame to contact and separate from one end of the interlocking member in an uncoupled state, a locking/unlocking cam that is pivotally attached to the cam mounting member and swings between indoors and outdoors, a cam receiving member having a cam guide portion with which the locking/unlocking cam can be engaged and disengaged, and a biasing member that applies a biasing force to the cam mounting member in a direction that moves the interlocking member toward the locked position,
The cam receiving member is held at the closed position of the sash via a support bracket detachably fixed by a cam receiving fixing means to a projection portion of the window frame located on the indoor side of the closed position of the sash,
a lock mechanism for locking a window, the lock mechanism being movable in a direction away from the interlocking member when the lock mechanism is released, the lock mechanism being movable in a direction away from the interlocking member when the interlock mechanism is released, and the lock mechanism being movable in a direction away from the interlocking member when the interlock mechanism is released, the lock mechanism being movable in a direction away from the interlocking member when the interlock mechanism is released, and the lock mechanism being movable in a direction away from the interlocking member when the interlock mechanism is released, the lock mechanism being movable in a direction away from the interlocking member when the interlock mechanism is released, the lock mechanism being movable in a direction away from the interlocking member when the interlocking member is released, the lock mechanism being movable in a direction away from the interlocking member when the interlocking member is released, and ... The window opening/closing lock device according to claim 1,
The unlocking mechanism includes an operation box attached to the window frame on the indoor side of the closed position of the screen, and an operation slider as the unlocking operation member slidably assembled in the operation box, and the operation slider and the interlocking member are connected to each other via an unlocking operation arm so as to move together.
A window opening/closing lock device, wherein the cam receiver fixing means also serves as a fixing means for the operation box to the window frame. The window opening/closing lock device according to claim 2,
The cam receiver fixing means is constituted by a single male screw that is screwed into the window frame,
A window opening/closing lock device, characterized in that a screw cover for hiding the head of the male screw is removably attached to the operation box. In the window opening/closing lock device according to claim 2 or 3,
A window opening/closing detection device using a magnetic proximity sensor is attached to the window frame adjacent to the operation box,
A magnet serving as a detection body of the magnetic proximity sensor is built into the operation slider so as not to be visible from the outside of the operation slider,
A window opening/closing lock device characterized in that the device is configured to detect the open/closed state of the screen by detecting the contact/separation state of the magnet with the magnetic proximity sensor, thereby determining the position of the interlocking member which moves integrally with the operating slider. A window sash having a sliding screen and a window frame that are locked and unlocked by a window opening/closing lock device described in any one of claims 1, 2, 3, or claim 4 that cites claim 2. A wall structure having a window sash as described in claim 5.

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