JPS5918045Y2 - window locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a locking device for holding a smoke exhaust window door in a closed position.

Many of the windows installed to remove smoke in the event of a fire are equipped with a telescoping rod that applies fenestration force using the elasticity of a spring or compressed gas between the swing-opening door and the window frame. Attach a latch receiver to the free end and a latch lock to the window frame. Under normal conditions, the latch receiver is engaged with the claw of the latch lock to keep the door in the closed position. In the event of a fire, pull the operating string to lock the latch. By retracting the lock pawl, the lock is released from the latch receiver, and the door is rapidly swung in the opening direction by the urging of the telescoping lever.

, as illustrated in FIG.
Since the structure is such that the door moves forward in the direction of the swinging fulcrum d and engages with the latch receiver e, when the door C bends due to the force of the telescoping rod f or wind pressure, as shown by the chain line in the figure, the claw piece There is a risk that the latch d and the latch receiver e may become uncoupled and the window may open.

In addition, when the locking piece is attached to the lock member, a large bending moment is applied to the base and there is a risk of it breaking. has been proposed, but such a structure has the drawback of causing misalignment with the locking member, resulting in incorrect engagement.

The object of the present invention is to provide a locking device with a novel structure that eliminates such drawbacks.

Hereinafter, an embodiment of the present invention will be described in detail based on FIGS. 2 to 8 showing one embodiment of the present invention.

In Figures 2 and 3, 1 is a window frame attached to a window hole cut through the wall, and an outward-folding door 2 that closes the inner surface is supported on the lower frame of the window frame 1 by a hinge 3. At the same time, a door-side locking device 16 and a frame-side locking device 20 are respectively attached to the upper part of the door 2 and the upper part of the window frame 1, which are coupled to each other to lock the door 2 in the closed position. When the fenestration operation strip 5 connected to the locking device 20 is pulled, the lock is released.

Further, the lower end of a telescopic rod 4 whose upper end is supported by the door 2 is supported on the side frames on both sides of the window frame 1, and this telescopic rod 4 is
The door 2 is biased in the extending direction by the elasticity of a spring or compressed gas, and when the lock is released, the door 2 is tilted toward the outdoors by the bias of the telescoping lever 4, as shown by the chain line in FIG. The structure is such that the fenestration is rapidly fenestrated.

As shown in detail in FIG. 5, the door-side locking device 10 includes a bracket 11 that has vertically elongated mounting holes 12.12 on both sides and a pair of left and right support arms 13.13 protruding from the front surface. and a locking piece 16 supported between support arms 13 and 13 by a shaft 15 perpendicular to the swinging direction of the door 2, and this locking piece 16 has a slope 16a on one side and a slope 16a on one side. A continuous locking step 16b is formed, and the shoulders on both sides of the locking piece 16 are loosely fitted into a groove 14 formed at the tip of the support arm 13. It can only be swung by an angle.

The door side locking device 10 having the above configuration has a mounting hole 12.1.
The locking piece 16 is fixed approximately perpendicularly to the surface of the door 2 by screwing the holder 18.18 onto the upper part of the indoor side surface of the door 2.

Note that the attachment holes 12.12 are vertically elongated as described above, and the door-side locking device 10 can adjust the fixing position with respect to the door 2 in the vertical direction.

As shown in detail in FIG. 4, the frame-side locking device 20 includes a case 21, a lever 22 and a lock claw 23 attached to the case 21, and a cover 24 attached to the case 21.
Bracket 25 for attaching case 21 to window frame 1
The main components are:

The case 21 has both ends bent into a U-shaped cross section, and by applying covers 24 to the bent portions on both sides and tightening them with screws 26, the case 21 has a cylindrical shape with a flat rectangular cross section and an opening 27 formed in the front surface. .

In addition, a guide plate 17 is welded to the center of the case 21, and is made of a substantially U-shaped leaf spring with a tip whose corresponding interval gradually widens facing the opening 27 and a rear end whose corresponding interval is narrowed.
Further, on one side of the inner bottom surface of the block 28, a screw 29 is attached.
A roller 30 is rotatably supported on the other side by a pin 31, and a block 28
A lever 22 and a lock pawl 23 are supported by a pin 32 so as to be freely swingable on the outside.

A spring 32a is hung between the lever 22 and the lock pawl 23, and the lock pawl 23 is urged clockwise relative to the lever 22 in FIGS. 6 and 7 by the elasticity of the spring 32a. .

A mounting piece 33 connected to the fenestration operation strip 5 and a screw 34 are fixed to the rear end of the lever 22, and the screw 34 and the case 2
A tension spring 36 is applied to a screw 35 screwed onto the other side of the lever 22, and the lever 22
It is biased clockwise in the figure and comes into contact with the block 28.

The bracket 25 has a flat U-shaped cross section so as to accommodate the case 21, and has L-shaped bent wings on the front surfaces of vertical pieces 25a, 25a on the side where the elongated holes 25b and 25b are transparent. A mounting piece 25 is provided with long holes 25 e and 25 e formed therein for attachment to the window frame 1 on the upper surface of the horizontal part.
d is curved at a right angle.

The frame side locking device 20 having the above configuration includes the bracket 25
Vertical pieces 25a, 25a long holes 25b, 25
b through the screw 38 and the side walls 21a, 21 of the case 25.
Screw into the screw hole 21b provided through the wing piece 25C.
, 25C through the mounting hole 25f of case 2.
The case 21 is temporarily fixed to the bracket 25 by screwing into the screw holes 21 d of the mounting pieces 21 C curved at the front ends of the side walls 21 a and 21 a of the bracket 21 , and the elongated hole 25 of the bracket 25
After passing screws 41 through e and 25 e and screwing them onto the window frame 1, close the door 2 and insert the locking piece 16 of the door-side locking device 10 into the opening 27 of the case 21, as shown in FIGS. Then, the locking piece 16 is guided by the roller 30 and enters the case 21, and pushes the lock claw 23 with the slope 16a to release the spring 3.
When the lock pawl 23 passes the slope 16a, it swings counterclockwise as shown by the chain line in FIG. As shown by the solid line, it engages with the engagement step portion 16b, and locks the locking piece 16 so that it cannot escape.

In this state, the screws 39 on both sides of the bracket 25.
39, the door 2 is pulled into the window frame 1 together with the case 21 and the locking piece 16 locked thereto, and the door 2 is pulled into the window frame 1.
vertical piece 2 of bracket 25 when aligned with window frame 1
The screws 38 and 38 inserted through 5a and 25a are fully tightened, and the fenestration operation strip 5 is connected to the mounting piece 33 of the lever 22, completing the installation and adjustment work.

When a fire breaks out, when the fenestration operation strip 5 is pulled downward in FIG. 6, the lever 22 is activated by the tension spring 3 as shown in FIG.
The door 2 swings counterclockwise against the elastic force of the lever 6, and the lock pawl 23 disengages from the engagement step 16b of the locking piece 16, releasing the lock. As shown by the chain line in Figure 3, the windows are tilted toward the outdoors and rapidly opened.

In this embodiment, the locking piece 16 is supported so as to be able to swing freely at a small angle with respect to the door 2, and since the guide plate 17 is provided, when the locking piece 16 enters into the case 21,
It has the advantage that it is held in a substantially horizontal position by the guidance of the guide plate 17 and is accurately aligned with the lock claw 23 in the vertical direction.

In addition, the case 21 is not directly fixed to the window frame 1, but the bracket 25 is attached to the window frame 1, and the case 21 is fixed to the bracket 25 so that it can be moved and adjusted in the swinging direction of the door 2. In addition, since the case 21 is attached to the bracket 25 in a symmetrical manner, it is possible to flip the case 21 upside down and attach it to the bracket 25. The lock can be released by pulling the window operating strip 5 in the opposite direction, but in this case, the locking piece 16 must be flipped upside down and attached to the door 2, or the locking piece 16 must be attached to the door 2
6b may be formed on the other side of the locking piece 16 as well.

Furthermore, if two sets of engagement step portions 16b are formed on one side of the locking piece 16, the door 2 can be placed in the closed position by engaging the lock claw 23 with any of the locking step portions 16b. can be adjusted.

In addition, in this embodiment, the lock claw 23 is replaced by the lever 22.
Since the lock pawl 23 is made separate from the locking piece 16 so that only the lock pawl 23 swings when engaged with the locking piece 16, it is possible to operate a large number of locking devices with a single fenestration operation strip 5. When operating one locking device with the fenestration operation section 5,
Since it is acceptable for the fenestration operation strip 5 to move when engaged with the locking piece 16, the lock pawl 23 may be formed integrally with the lever 22.

As clarified by the above explanation, the locking device of the present invention has a locking step formed on a surface parallel to the swinging direction of the iron P on the door that is biased by swinging force in the window opening direction. The locking piece is mounted so that it can swing freely within a certain angle range by an axis perpendicular to the swinging direction, and a case into which the locking piece is inserted when the window is closed is mounted on the window frame. A guide plate that guides the locking piece to a predetermined posture, a lock position that engages with a locking step of the locking piece to lock the door in a closed position, and formation of the engagement step. A locking member is provided which swings to two positions, a lock release position, which is spaced apart in a direction substantially perpendicular to the surface where the lock is opened, and a spring is attached to the locking member to bias the swinging force in the direction of the locking position. A fenestration operating member is connected to the member, and the locking member is swung to an unlocked position by the operation of the fenestration operating member, the locking member being perpendicular to the swinging direction of the locking piece. Since the locking member engages from the opposite direction, there is little risk that the locking member will come off the locking piece even if the door bends, and the closed state of the window can be maintained reliably.Since the locking piece is pivotally supported by the door, it is easy to install it. Since no bending moment is applied to the base, the locking piece has excellent strength, and the locking piece is guided by a guide plate to a predetermined posture to engage with the locking member, so that the locking piece can be locked easily. This provides the effect of always correctly engaging the member.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view showing an outline of a conventional device. 2 to 8 show one embodiment of the present invention, FIG. 2 is a front view showing an outline, FIG. 3 is a sectional view taken along the line AA in FIG. 1, and FIG.
The figure is an exploded perspective view of the frame side locking device, Figure 5 is an exploded perspective view of the door side locking device, Figures 6 and 7 are cross-sectional views of the main parts, and Figure 8 is an exploded perspective view of the frame side locking device.
The figure is a longitudinal sectional view of the main part.

Claims (1)

[Scope of utility model registration request] A locking piece with a locking step formed on a surface parallel to the swinging direction of the iron P is attached to the door, which is biased by swinging force in the opening direction, within a certain angular range by an axis perpendicular to the swinging direction. A case is attached to the window frame so that the locking piece can be freely swung and the locking piece is inserted when the window is closed. A locking position in which the door is locked in the closed position by engaging with the engagement step of the locking piece, and an unlocking position in which the locking piece is spaced approximately perpendicularly from the surface on which the engagement step is formed. A rocking lock member is provided, and a spring is attached to the lock member to bias the rocking force in the direction of the lock position, and a fenestration operation member is connected to the lock member, and the fenestration operation member is connected to the lock member. 1. A window locking device, characterized in that the locking member is swung to an unlocked position when activated.