JP2528171Y2 - Window staying device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a window shutter retaining device used for a sliding window which rotates while moving up and down.

[0002]

2. Description of the Related Art Conventionally, in a sliding window in which a window shoji is rotated about a horizontal axis while moving up and down, a hinge arm fixed to upper ends of both side surfaces of the window shoji is used as a holding device for the window shoji. One end of a support arm for supporting the window shoji in an open state is pivotally connected to a vertically movable drive rod at a first horizontal axis, and one end of a support arm for supporting the window shoji in an open state is pivotally connected to a hinge arm at a second horizontal axis. There is known a window which is pivotally attached to a vertical frame by a third horizontal axis. In this device, when the drive rod is moved up and down by a handle, the shoji is moved up and down by the drive rod via the first pivot and the first arm is moved by the support arm.
Rotated around the pivot. Window shojis move almost only upward or downward near the closed position.

[0003] As this kind of window shoji, there is a further
As shown in Japanese Patent No. 27979, locking means is provided between the lower part of the shoji and the vertical frame of the window to lock and unlock the window shoji automatically in accordance with the opening and closing movement thereof. It has been known.

In this locking means, a lock pin is fixed to a lower portion of a side surface of a shoji, and a lock plate having a lock hole for locking the lock pin is pivotally attached to a vertical frame of a window with a pin. The lock plate swings between a lock position and an unlock position by fitting an operation hole formed therein and an operation pin fixed to the vertical frame of the window. Lock the lock pin with the lock hole or release the lock.

[0005]

The locking means for the window sash in the conventional window sash retainer described above uses a lock plate.
The lock hole of the lock plate with the lock pin to lock the lock plate, and release the lock by releasing the fit. Matching is extremely troublesome in terms of design, work, or assembly.

According to the present invention, it is very easy to adjust the timing of locking and unlocking the lock means of the lock pin and the lock plate by eliminating the disadvantages of the conventional lock means in terms of timing, and the structure is simplified. It provides a product that is easy to design, manufacture, and assemble.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a lock plate having a lock hole having a lock hole in which a lateral lock pin is erected on a side surface of a shoji and which is fitted and locked with the lock pin. The lock plate is pivotally attached to the vertical frame by a horizontal pin, and the lock plate is tilted by its gravity to a standby position where the lock hole is inclined and fitted with the lock pin, and conversely, the lock pin follows the closing movement of the shoji. When the lock hole is swung to the vertical position at the closed position of the window shoji by the force that pushes the lock hole, the lock pin fits into the lock hole as it rises from the closed position of the shoji to the fully closed position. And configured to lock.

[0008]

1 and 2 show two upper and lower window shoji (1),
(2) is shown attached to the right vertical frame (3) (viewed from the inside) of the window frame on its right side (viewed from the inside), and the window shoji (1) and (2) are shown in FIG. Is completely open and is completely closed in FIG.

A pair of vertical driving rods (4) for opening and closing the window shojis (1) and (2) are vertically movably assembled to a pair of vertical frames (3) opposed to the window, and have a worm gear mechanism. It is moved up and down by the handle (6) via (5).

The upper window shoji (1) has hinge arms (7) fixed to the upper ends on both sides thereof at fixing portions (8), and the extending portions (9) extending upward from the fixing portions (8). ) Is pivotally connected to the upper end of the drive rod (4) at a lateral pivot (10) (first pivot point).

One end of the support arm (11) has a mounting seat (12).
The other end is pivotally connected by a lateral pivot (13) (second pivot point), and the other end is pivotally connected to the fixing portion (8) of the hinge arm (7) by the connecting means (14) (third pivot point). The mounting seat (12) is fixed to the vertical frame (3) of the window.

When the drive rod (4) is at the highest position (FIGS. 2 and 3), the window shroud (1) is completely closed, and when the drive rod (4) is lowered from the highest position, the window is closed. The shoji (1) has a hinge arm (7) and a supporting arm (11), and a pivot (1).
0) It descends while rotating around the opening direction. When the window shoji (1) reaches a predetermined maximum opening angle (FIGS. 1 and 3), a stopper (15) integral with the hinge arm (7) abuts against the support arm (11), and the window is displaced. The shoji (1) is stopped at that angle. When the drive rod (4) rises in reverse from the lowered position, the window shoji (1) is moved to the hinge arm (7) and the support arm.
While rotating in the closing direction around the pivot (10) via (11), it rises and returns to the closed position (FIGS. 2 and 3). At this time, the lower part of both sides of the upper window-shoji (1) is automatically locked by the locking means (16) according to the closing movement of the window-shoji (1), and when the window-shoji (1) is opened, it is locked. Is automatically canceled.

The lock means (16) comprises a lock pin (17) and a lock plate (18), and the lock pin (17) is a vertical frame (19) on the side of the window shoji (1) (FIG. 7). Mounting seat fixed to
The lock plate (18) is erected in the horizontal direction by a horizontal pin (22) on a mounting seat (21) fixed to the vertical frame (3) of the window.

The lock plate (18) has a linear lock hole (23) opened at the lower side thereof, and the lock hole (23) is in a vertical direction when the lock plate (18) is in the lock position. When it is in the unlocked position, it faces diagonally.

In FIG. 2, when the window shoji (1) is completely closed, the lock pin (17) fits into the lock hole (23) of the lock plate (18) and the lock plate (18). Is held at the lock position shown by a solid line against the gravity (FIG. 3), and at the same time, the stopper (24) of the mounting seat (20) supports the lower side of the lock plate (18). As a result, the lock pin (17) is locked by the lock plate (18), and as a result, the lower end of the window shoji (1) is locked. Since the lock means (16) can also perform a pulling function in addition to the lock function for the window shoji, an airtight means is provided between the window shoji (1) and the window frame in the locked state, and the airtight means is provided. If the position is determined so as to work, the window sash (1) is locked and at the same time airtightness is obtained.

When the window shroud (1) is open, the lock plate (18) rotates to the position of an imaginary line around the pin (22) due to its gravity (FIG. 3), and its hypotenuse (25) Is the mounting seat (2
It abuts against the stopper (26) of 1) and is held at that position. In this case, the lock hole (23) faces diagonally to the left and the right side (27) of the lock hole (23) is formed longer than the left side (28), so that the opening end of the right side (27) is on the left side. It stands by at a position extending downward beyond the open end of (28).

When the window shoji (1) rotates in the closing direction as the drive rod (4) rises, the lock pin (17) hits the right side (27) of the lock hole (23) of the lock plate (18). Then, rotate the lock plate counterclockwise around the pin (22). When the window shoji (1) reaches its closed position, the lock hole (23) of the lock plate (18) faces vertically and the mounting seat (20).
Of the lock plate (18) reaches a position below the lower side of the lock plate (18). In the closed position, even when the drive rod (4) is raised, the window shoji (1) is pulled up to the completely closed position without rotating. As a result, the lock pin (17) is
It rises along 3) and fits into this lock hole. In this way, the lower end of the window shoji (1) is also automatically locked. At this time, the stopper (24) of the mounting seat (20) also supports the lower side of the lock plate (18) (FIG. 3).

In order to open the window shoji (1), the driving rod (4)
Is lowered, the window shoji (1) descends without rotating,
The lock pin (17) is lowered to a position where it is engaged with the right side (27) of the lock hole (23) but is disengaged from the left side (28). Next, while rotating the window shoji (1) in the opening direction, the lock pin
Move (17) away from the lock plate (18). This allows
The lock by the lock pin (17) and the lock plate (18) is automatically released.

The lock pin (17) and the lock means (16) of the lock plate (18) will be described in more detail with reference to FIG.

The mounting seat (2) to which the lock pin (17) is attached
Reference numeral 0) is formed of a rectangular band-like plate material as viewed from the front, and its central portion is bent in a U-shape to form a raised wall (29). On the raised wall (29), a lock pin (17) is erected in the lateral direction and a stopper (24) is formed by bending one side of the lock pin (17).
8) Support the lower side (30) and hold the plate in the locked position. The flanges (31) at both ends of the mounting seat (20) are faced and fixed to the vertical frame (19) of the window shoji (FIG. 7).

The lock plate (18) is connected to the upper side (3
2), a right side (33) extending vertically downward from the right end, a first lower side (34) extending horizontally leftward from the lower end, and a first hole side for forming a lock hole extending vertically upward from the left end. (Right side) (27), and a second hole side (left side) (28) for forming a lock hole that is folded back in an arc shape from the upper end and extends vertically downward,
It is formed in a plate shape with a second lower side (30) extending horizontally leftward from its lower end, and an oblique side (25) extending obliquely upward and leftward from the left end and intersecting the left end of the upper side (32). Hole 1 (2
7) extends longer than the second side edge (28), so that the first lower side (34)
A step is formed between the second lower side (30). Therefore, when closing the window shoji (1), the lock pin (17) is moved to the second lower side (30).
The lock plate (18) is rotated counterclockwise around the pin (22) by passing under the first hole and hitting the first hole side (27).
The second lower side (30) is supported by a stopper (24) of the mounting seat (20).

The mounting seat (2) for the lock plate (18)
1) is formed in a rectangular shape by a band-like plate material as viewed from the front, similarly to the mounting seat (20) for the lock pin (17), and a central portion thereof is bent in a U-shape to form a raised wall (35). The flanges (36) at both ends are fixed to the vertical frame (3) of the window. The raised plate (35) has a lock plate (1).
8) The intersection of the upper side (32) and the hypotenuse (25) is pivotally connected with a pin (22), and this pin (22) and the side (33)
Between the lock holes (23). Therefore, the lock plate (18) is always biased clockwise around the pin (22) by its gravity, and in the unlocked state, rotates until it engages the stopper (26) of the raised wall (35), and Wait at the position. In addition, the raised wall (35) of the mounting seat (21) and the leg wall (37) connected to the raised wall (35) are formed by removing the corners where the raised wall (35) intersects, thereby removing the passage for the lock pin (17).
(63) is formed.

The raised wall (2) of the mounting seat (20) for the lock pin (17)
The raised wall (35) of the mounting seat (21) for the lock plate (9) and the lock plate (18) is arranged in the middle of the gap between the vertical frame (19) of the window shoji (1) and the vertical frame (3) of the window. (Fig. 7), lock pin (17) and lock plate
The lock of the lock (18) with the lock hole (23) and the release thereof are smoothly performed.

The hinge arm (7) and the support arm (11)
The connecting means (14) of the enlarged circular hole (3)
8) and a connecting hole (40) formed by a narrow straight hole (39) communicating with this hole, and the inner peripheral surface of the enlarged circular hole (38) symmetrically arranged with respect to the rotation center. Arc-shaped outer peripheral end faces
(41) and a pair of side faces fitted in the straight hole (39) by connecting these outer peripheral end faces with each other on a flat surface in a narrow parallel relationship with each other.
The connecting pin (4
It is composed of 3). The connecting hole (40) is a hinge arm (7).
The connecting pin (43) is erected laterally on the support arm (11), and the straight hole (39) of the connecting hole (40) and both outer peripheral end faces (41) of the connecting pin (43) are formed. Each direction of the center line to be connected and the side surface (42) of the connecting pin is arranged to take a vertical direction when the window shoji (1) is in the closed position.

When the window sash (1) is completely closed (FIG. 3), the connecting pin (43) is connected to its side (42).
Are fitted in the straight holes (39) of the connection holes (40), and lock the hinge arm (7) and the support arm (11) so that they cannot rotate relative to each other. At this time, even if the window shoji (1) is to be opened, the hinge arm (7) and the support arm (1) are opened.
1) cannot rotate around the pivots (10) and (13), the window shoji (1) is locked in the closed position, and this locked state is maintained. The connecting means (14 ) formed by the connecting hole (40) and the connecting pin (43) can also perform a drawing function in addition to the lock mechanism for the window shoji (1), so that the window shoji (1) is locked. If the position of the airtight means is determined so that the airtight means between the window shoji (1) and the window frame works in the closed state, the window shoji (1) is locked and at the same time airtightness is obtained.

When the window shoji (1) is open (FIG. 3), the connecting pin (43) has an outer peripheral end surface (41) with an enlarged circular hole (3).
It fits inside the enlarged circular hole so that it can rotate along the inner peripheral surface of 8), and performs the same function as the original pivot.

The drive rod (4) is moved to the window shoji (1) shown in FIG.
When raising the window in the open state and closing the window shoji (1),
The outer peripheral end surface (41) of the connecting pin (43) rotates along the inner peripheral surface of the enlarged circular hole (38) of the connecting hole (40) (FIG. 3). When the window shoji (1) reaches the closed position, the side surface (42) of the connecting pin (43) is aligned with the straight hole (39) of the connecting hole (40). Window Shoji (1)
When fully closed, it only rises without rotation, and as a result, the connecting pin (43) moves relatively from the enlarged circular hole (38) in the direction of the straight hole (39), and Pin side (42)
Is guided into the straight hole (39) and fitted therein (FIG. 3). Thereby, the upper end of the window shoji (1) is automatically locked and is kept airtight.

In this locked state, when the drive rod (4) is lowered, the window shoji (1) does not rotate but only lowers in the first stroke.
(42) moves along the straight hole (39) of the connecting hole (40),
Deviates from (39) and relatively reaches the enlarged circular hole (38) (FIG. 3). At the same time, the hinge arm (7) and the support arm (1
The lock between 1) is automatically released, and the window shoji (1) can be opened.

The hinge arm (7), the support arm (11) and their connecting means will be described in more detail with reference to FIG.

The hinge arm (7) has a fixing portion (8)
From the front to the extension portion (9) are formed of a band-like plate having substantially the same width as viewed from the front. The fixing portion (8) extends in the vertical direction so as to be parallel to the side surface of the window shoji (1), and a connection hole (40) is formed in the fixing portion (8). The extending portion (9) extends obliquely upward and rightward from the upper end of the fixing portion (8) in the direction of the driving rod (4), and is pivotally connected to the driving rod (4) by a pivot (10).

The central part of the fixing part (8) of the hinge arm (7) is bent in a U-shape to form a raised wall (44). The connecting hole (40) is formed in the raised wall (44), and the raised wall (44) is formed between the vertical frame (19) of the window shoji (1) and the vertical frame (3) of the window. (FIG. 8) to smoothly connect the hinge arm (7) and the support arm (11) by the connecting pin (43) and open and close the window shoji (1).

The enlarged circular hole (38) of the connecting hole (40) and the straight hole (39)
Are vertically oriented along the center line of the raised wall (44) of the fixing part (8) of the hinge arm (7), and the positioning of the connecting hole (40), machining, assembling and mounting are performed. Etc. can be performed accurately and easily.

The raised wall (44) further has on its side a stopper (15) bent at a right angle.
(15) engages the side of the support arm (11) to limit the opening angle of the hinge arm (7) and the support arm (11) as described above. The hole (45) of the fixing part (8) of the hinge arm (7) is
It is used for mounting screws for fixing the hinge arm (7) to the vertical frame (19) of the window shoji (1).

The extension portion (9) is bent so as to form a single step with the fixing portion (8), and its tip is pivotally connected to the drive rod (4) by a pivot (10). ing. This step also provides a clearance for mounting of the keeper between the window frame (19) and the window frame (3).

Similarly to the hinge arm (7), the support arm (11) is formed of a band-shaped plate having the same width from the connection pin (43) to the pivot (13). In the support arm (11), the portion (46) supporting the connecting pin (43) overlaps with the fixing portion (8) of the hinge arm (7) in the closed state of the window shoji (1). Like the section (8), the drive rod (4) and the window frame (1) extend in the vertical direction so as to be parallel to the vertical frame (19). This connecting pin (4
A square hole (64) is bored in the support portion (46) of (3), and the square shaft (48) of the connecting pin (43) is inserted into the square hole, and the end is swaged. Center line connecting the outer peripheral end surface (41) of the connecting pin (43) is not directed in a vertical direction along the longitudinal centerline of the supporting <br/> sandwiching member component (46) of the connecting pin (43) Thus, similarly to the connection hole (40), the positioning, processing, assembly, mounting, and the like of the connection pin (43) can be performed accurately and easily.

An extension (47) extending from the end of the support portion (46) of the connecting pin (43) to the pivot (13) extends obliquely downward to the right in the direction of the drive rod (4), and has a step at its tip. And a front end portion thereof is pivotally attached to the mounting seat (12) by a pivot (13). This step forms a gap for attaching a retainer between the vertical frame (19) of the window shoji (1) and the vertical frame (3) of the window, similarly to the step of the hinge arm (7) (FIG. 8).

Axis (10) -Axis (13) -Connecting pin (43) -Axis
The line connecting (10) always forms a triangle (Fig. 3), regardless of whether the window shoji (1) is open or closed, and the connecting pin (43) connects the pivot (10) and the pivot (13). Since the position where the window shroud (1) protrudes further in the opening direction (FIG. 3), the hinge arm (7) and the support arm (11) are smoothly moved according to the vertical movement of the drive rod (4). Can be opened and closed.

In the connecting means (14) between the hinge arm (7) and the support arm (11), the connection hole (40) of the hinge arm (7) extends along the connection pin (43) of the support arm (11). As the lock means (16) rises, the lock pin (17) of the lock means (16) can move up along the lock hole (23) of the lock plate (18) (FIG. 3). The lock plate (18) is more fully engaged with the lock hole (23) .

The means for moving the drive rod (4) up and down is, as shown in particular in FIG. 4, a manual handle (6) and a worm (not shown) which rotates integrally with the shaft of the handle.
A worm gear mechanism (5) comprising a worm gear (50) meshing with the worm; and an operation arm (51) rotating integrally with the worm gear (50). A pin (52) is connected to the operating arm.
A transmission rod (53) pivotally connected at a step (5), a crank arm (55) pivotally connected to the transmission rod by a pin (54), and the crank arm is fixed so as to rotate integrally with one side of the window. A transmission shaft (56) extending from the vertical frame (3) to the other vertical frame (not shown), one end pivotally connected to the crank arm (55) by a common pin (54), and a drive rod (4). And a transmission rod (58) having the other end pivotally connected to a pin (57).

When the handle (6) is turned to the right, the worm gear (50) rotates counterclockwise about the shaft (62) integrally with the operation arm (51), and the crank arm (55). Also rotates in the same direction via the transmission rod (53). The crank arm (55) further lowers the drive rod (4) via the transmission rod (58) to open the upper and lower window shojis (1) and (2). In that state, handle (6)
Turning to the left, most of the space between the handle and the drive rod (4) operates in the opposite direction, raising the drive rod and closing the upper and lower window shoji.

Similarly to the upper window shoji (1), the lower window shoji (2) is attached to the vertical frame (3) of the window by a driving rod (4) common to the hinge arm (7) and the support arm (11). In accordance with the vertical movement of the drive rod (4), it is opened and closed in the same manner as the upper window shoji (1). At this time, the upper part of the lower window shoji (2) is automatically locked and released, and the upper part of the lower window shoji (2) is pulled and released. Lower window sash (2), the lower also the locking means also serving as a drawn in the same manner as above the window sash (1) (16) 'are provided. The lock means (16) 'includes a lock pin (60) erected on a mounting seat (59) fixed to a lower portion of the side surface of the window shoji (2) and a lock cam (61) erected on a crank arm (55). (FIG. 4). Then, when the window shoji (2) is closed, the lock cam (61) engages with the lock pin (60) and pushes the pin, thereby locking the window shoji (2) and pulling it to the window frame in an airtight manner. When the window sash (2) is opened, the lock cam (61) separates from the lock pin (60) and releases the lock and the pull.

The drive rod (4), the hinge arm (7), and the support arm are of course also provided on the side opposite to the window shojis (1) and (2).
(11), lock means (16), (16) 'for the upper and lower window sashes, a crank arm (55) for operating them and a transmission rod (58) are provided. Operate simultaneously via axis (56).

[0043]

According to the present invention, as described above, the lock pin (17) in the horizontal direction is erected on the side surface of the window shoji, and the lock pin (17) is engaged with the lock hole (2) to lock.
Lock plate (18) with 3) vertical window frame (3)
The lock plate (18) is pivotally pivoted to the lock plate (18) by a lateral pin (22), and the lock hole (23) is tilted by its gravity to a standby position where the lock hole (23) is fitted with the lock pin (17). And the lock pin (1
7) The locking hole (23) is pushed by the force to push the locking hole (23) to the vertical direction and rocked to the position where the locking pin (17) is locked.
Re which is configured to so that opening and closing of the window sash, a it is extremely easy to adjust the timing of locking and unlocking the lock pin (17) and the locking means by the locking plate (18), yet its structure Are simplified, and design, manufacture, assembly, and the like are easy. The connecting means for connecting the hinge arm (7) and the support arm (11) is formed by a connecting hole (40) formed by an enlarged arc (38) and a straight hole (39).
And a connecting pin (43) formed by a side surface (42) that fits and locks with the outer peripheral end surface (41) that rotates in the enlarged arc (38) and the straight hole (39). The engagement between the lock pin (17) and the lock hole (23) is further ensured.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a window according to an embodiment of the present invention, showing a state in which a window shoji is opened.

FIG. 2 is a longitudinal sectional side view of a window similar to FIG. 1 showing a state in which a window shoji is closed.

FIG. 3 is a partially enlarged longitudinal side view of a window showing an open / closed state of the upper sash of FIG. 1;

FIG. 4 is a partially enlarged longitudinal side view of a window showing an open / closed state of the lower sash of FIG. 1;

FIG. 5 is an exploded perspective view of a locking means of the upper sash.

FIG. 6 is an exploded perspective view of a hinge arm and a support arm.

FIG. 7 is an enlarged sectional view taken along line AA of FIG. 2;

FIG. 8 is an enlarged sectional view taken along line BB of FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Upper window shoji 2 Lower window shoji 3 Vertical frame 4
Drive rod 5 Worm gear mechanism 6 Handle
7 Hinge arm 10 Axis of first pivot point 1
1 Support arm 13 Axis of second pivot 14
Connection means 16 at third pivot point 16 Lock means 16 '
Locking means 17 Lock pin 18 Lock plate 22 Pin 23 Lock hole 40 Connection hole 43 Connection pin 50 Worm gear 51
Operation arm 53 Transmission rod 55 Crank arm 56 Transmission shaft 58 Transmission rod 60 Lock pin 61 Lock cam

Claims (6)

(57) [Scope of request for utility model registration] A vertically long drive rod which is incorporated in a vertical frame of a window and moves up and down in the vertical direction, and an extending portion fixed to an upper end of a vertical frame of a window shoji and extending above the drive rod is attached to the drive rod. A hinge arm pivotally connected at a first pivot point, a mounting seat fixed to the vertical frame of the window at a position below the hinge arm, and one end pivotally connected to the mounting seat at a second pivot point; A support arm having the other end pivotally connected to the hinge arm at a third pivot point, wherein the first pivot point of the window shoji is set at the center of rotation while moving the window shoji up and down in accordance with the vertical movement of the drive rod. In the apparatus for opening and closing, means for automatically locking the window shoji in its closed position is provided between the window shoji and the vertical frame of the window, and as the locking means, a lock pin is fixed to the side surface of the window shoji. A lock having a lock hole which stands up on the seat and engages with the lock pin to lock the lock pin. The lock plate is pivotally attached to the mounting seat fixed to the vertical frame of the window with a pin so as to be swingable, and the lock hole linearly extends to the lower side of the lock plate and opens there.
When the window shoji is open, the lock plate rotates in the opening direction of the window shoji due to its own weight, and takes a standby position in which it is inclined in the same direction to engage with the lock pin. Part of the opening of the lock hole is pushed and the lock hole rotates together with the lock plate to the lock position where it faces vertically, and stops.The lock pin moves along the lock hole when the window shoji rises to the closed position . A window shoji retainer that rises and is fitted and locked in the lock hole. 2. The lock plate according to claim 1, wherein the pivot point of the lock plate is set at a position eccentric from the center of gravity of the window shoji in the opening direction of the window shoji, so that the lock plate is rotated by its own gravity in the opening direction of the window shoji and the lock hole is opened. take is tilted unlocking position, the guard of the closing direction side of the window sash lock hole is open extending longer below the hole edge of the opening direction side of the window sash, lock this extended hole edges lock plate The window-shoulder restraining device according to claim 1, which serves as a contact surface of the lock pin when rotating to the position. 3. When the window sash is closed and the lock plate is in the locked position, a stopper for supporting a lower side thereof is provided on a mounting seat fixed to the side surface of the window sash.
The lock pin is lowered in the lock hole when the window shoji is opened, and the lock hole is held in the lock position until the lock pin moves away from the opening to assist the lock pin in coming out of the lock hole.
The stay device for a window shoji according to any one of (1) and (2). 4. The lock plate according to claim 1, wherein the mounting plate has a stopper, and the stopper holds the lock plate in a lock release position where the lock pin is appropriately inclined so that the lock pin engages with the lock hole. The stay device for a window shoji according to any one of the above. 5. The connecting means at the third pivot point includes a connecting hole formed by an enlarged circular hole formed in the hinge arm and a narrow straight hole communicating with the enlarged circular hole. A pair of outer peripheral end surfaces which are erected at the other end of the support arm and rotate along the inner peripheral surface of the enlarged circular hole at a symmetrical position with respect to the center of rotation, and these outer peripheral end surfaces are parallel to each other in a narrow width. And a connecting pin having a cross-sectional shape formed in a pair of flat sides and elongated to prevent relative rotation of the hinge arm and the supporting arm by being fitted into the straight hole. Each direction of the center line connecting the straight hole and the outer peripheral end surface of the connecting pin and the side surface of the connecting pin is oriented in the vertical direction parallel to the driving rod in the closed state of the window shoji, and rotation of the outer peripheral end surface of the connecting pin with respect to the enlarged circular hole. The window shoji is opened and closed by the 5. A window sash retainer according to claim 1, wherein the sash is locked in its closed position. 6. The window sash retainer according to claim 1, wherein the drive rod is vertically moved by a manual handle via a worm gear mechanism.