JPS5924781Y2 - smoke evacuation tablet - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a smoke evacuation lock for holding a shoji door openably and closably supported in a closed state.

In a smoke evacuation device, a shoji is fitted inside a window frame, the lower part of the shoji is swingably supported, and the window frame is deflected in the opening direction by a stay damper provided between the shoji and the window frame. A top latch is attached to the top of the shoji, and a smoke evacuation lock that can be secured to this top latch is attached to the fixed part of the window frame, and the window frame is closed by the engagement of this smoke evacuation lock and the top latch. The top latch is disengaged from the smoke evacuation lock by holding it and pulling an operating wire connected to the smoke evacuation lock.

By the way, in conventional smoke evacuation locks, spring elasticity is applied to the latch of the smoke evacuation lock that can be held against the top latch to deflect the latch in the engagement direction, and the operating wire connected to the smoke evacuation lock is connected to the spring. The smoke evacuation lock is unlocked by pulling it in a direction that resists the elasticity of the lock.

(Refer to Utility Model Publication No. 55-11980). in this way,
With conventional smoke evacuation locks, the direction in which the wire connected to them can be pulled is limited, so manufacturers have to create two types of smoke evacuation locks: right-pull smoke evacuation locks and left-pull smoke evacuation locks. It is extremely uneconomical.

Therefore, the object of this invention is to provide a smoke evacuation lock that can be used for both right-hand pulling and left-hand pulling.

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

As shown in FIGS. 2 to 5, the smoke evacuation lock according to this invention consists of an elongated rectangular case body 1 and a slider 2 provided inside the case body 1. A guide hole 4 is formed in the case body 3, and the guide hole 4 extends in the direction of both ends of the case body 1.

A circular latch 5 is provided on the bottom side of the case body 1,
The shaft 6 of the latch 5 is inserted into the guide hole 4 of the bottom plate 3 and rotatably supported by the slider 2, so that the slider 2 can move freely within the range where the shaft 6 is limited by the guide hole 4.

The back of the latch 5 is formed into an inclined surface 7 as shown in FIG.

Further, the end of the shaft 6 of the latch 5 protrudes into the slider 2,
A pinion 8 is fixed to its end.

A portion of the outer circumference of the pinion 8 is located within a notch 10 formed in the front plate 9 of the slider 2 and engages with rack teeth 12 formed in the front plate 11 of the case body 1.

As a result, when the slider 2 moves, the pinion 8 rotates, and the latch 5 moves along the guide hole 4 while rotating.

As shown in FIGS. 2 and 3, the case body 1 includes a pair of protrusions 13 that protrude forward from both ends of the front plate 11, and a guide rod 14 is passed between the protrusions 13. There is.

A pair of knock pins 15 are attached to the guide rod 14 at positions on both sides sandwiching the center between both ends, and a pair of collars 16 are attached to the outside of the guide rod 14 between the pair of knock pins 15.
A spring 17 is fitted between the collars 16, and each of the collars 16 is pressed against the knock pin 15 by the elasticity of the spring 17.

The slider 2 has a pair of clip support pieces 18 extending above the guide rod 14 from the upper edge of the front plate 9, and a clip 1 for connecting the operating wire is provided on the lower surface of the tip of each support piece 18.
9 is provided.

Further, a pressure piece 20 is formed downwardly on the outside of each support piece 18, and a semi-cylindrical press cylinder 22 is fixed to a notch 21 provided at the lower end of this pressure piece 20.

The pressing cylinder 22 covers the outer periphery of the guide rod 14, and its inner end abuts the outer end surface of the collar 16.

Note that the clip 19 has a screw (L) as shown in FIG.
A split groove 25 for wire insertion is formed in the cylindrical body 24 having a diameter of 23, and the wire inserted into the split groove 25 is pressed by the tip of a screw 26 screwed into the screw hole 23.

As shown in FIG. 1, the smoke evacuation lock constructed as described above is attached above a slidable shoji 31 whose lower part is supported by a window frame 30, and a top latch provided on the shoji 31 is attached. Its mounting position is restricted so that the latch 32 engages with the front face of the latch 5 of the smoke evacuation lock.

An operating wire 33 is connected to the clip 19, and the operating wire 33 is pulled in the horizontal direction, hooked onto a pulley 34 provided at a corner of the chamber, and pulled out downward from the pulley 34.

Now, when the slider 2 is moved to the right side in FIG. 2 by pulling the operation wire 34, the pinion 8 rotates, and the rotation of the pinion 8 causes the latch 5 to rotate as well and move laterally. The latch 5 and the latch 1 to latch 32 engaged with the latch 5 are released.

As a result, by imparting elasticity in the opening direction to the shoji 31 shown in FIG.
At the same time as the engagement is released, the shoji 31 swings and the window frame 30 opens.

The smoke evacuation lock according to this invention consists of a pair of projecting pieces 1 of a case body 1.
A pair of dowel pins 15 are provided on the guide rod 14 passed between the dowel pins 15, and a pair of slidable collars 16 are provided on the outside of the guide rod 14 between the knock pins 15.
The spring 17 is fitted in between, and the slider 2
Since the configuration is such that a pressure piece 20 is provided on a pair of clip support pieces 18 provided on the side of the collar 16, and the pressure piece 20 is brought into contact with the outside of the collar 16, when the slider 2 is moved to the right side in FIG. , the pressure piece 20 located on the left presses and moves the collar 16, and the movement of the collar 16 compresses the spring 17.

Further, when the slider 2 is moved to the left side in FIG. 2, the pressure piece 20' located on the right side in the figure presses and moves the collar 16', and the spring 17 is compressed by the movement of the collar 16'.

In this way, the slider 2 can be moved in either the right or left direction, and the spring 17 is compressed and deformed by the movement of the slider 2, and its restoring elasticity causes the spring 17 to move through the collar 16, 16'. Since the slider 2 can be returned to its original position, the smoke evacuation lock according to this invention can be used for both right-hand pulling and left-hand pulling, making it extremely economical.

Further, the pressure piece of the slider is engaged with the outer end surfaces of the pair of collars whose movement in the outward direction is restricted by the pair of knock pins 15, and a spring is disposed between the pair of collars to support the latch. Since the slider is returned to its original position, even if the elastic force of the spring becomes weak, the slider can be reliably returned to its original position.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a front view showing the state of use of the smoke evacuation lock according to this invention, Fig. 2 is a plan view showing an embodiment of the smoke evacuation lock of the same type;
FIG. 3 is a partially cutaway front view of the same as the above, FIG. 4 is a vertical cross-sectional view of the same, and FIG. 5 is a perspective view showing the main parts of the same. 1...Case body, 2...Slider, 3...Bottom plate, 4...Guide hole, 5...
...Latch, 6...Axis, 13...
・Protrusion piece, 14...Guide rod, 15...
Dowel pin, 16...Color, 17...
・Spring, 18...Clip support piece, 19
...Clip, 20...Pressure piece.

Claims (1)

[Scope of utility model registration request] It consists of an elongated rectangular case body and a slider movably fitted inside the case body, and a guide hole extending long in the direction of movement of the slider is formed in the bottom plate of the case body. A movable latch is supported by a slider, a pair of knock pins are provided on a guide rod whose axis is parallel to the moving direction of the slider on the outside of the case body, and a pair of collars are provided on the outside of the guide rod between the knock pins, A spring is fitted between the collars, a pair of clip support pieces are formed on the slider that extend toward the guide rod, each support piece is provided with a clip for connecting the operating wire, and each support piece is provided with a pair of clip support pieces extending toward the guide rod. A smoke evacuation lock with a pressure piece that abuts against the end face.