JPH0324789Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a device for operating rope winders for smoke evacuation windows, etc., which winds up or releases operating ropes for simultaneously opening and closing multiple smoke evacuation windows in an emergency smoke evacuation system. It is about improvement.

In recent years, buildings have become taller and more complex year by year, and catastrophes caused by building fires are occurring more frequently. Therefore, an emergency smoke evacuation device as shown in FIG. 1 has been devised. This device consists of several series of smoke evacuation windows 1
are connected via a small wheel 2 so that they can be opened and closed simultaneously by one operating rope 3, and under normal conditions, the operating rope 3 is wound around a winding roller (not shown) of a winder 4 to open and close each smoke exhaust window 1. Close the winder 4 in case of emergency.
By simply pressing the push button 4', the rotation lock of the winding roller is released, the operating rope 3 is let out from the winder 4, and each smoke exhaust window 1 is opened instantly. It is possible to prevent disasters caused by opening windows one window at a time in an emergency situation. Further, when the opened smoke exhaust window 1 is to be closed, the crank handle is inserted into the winder 4 and rotated to wind up the operating rope 3. Since this emergency smoke evacuation device can also be used for ventilation, it is widely used for ventilation in large buildings such as factories and exhibition halls.

However, the conventional winder 4 still has some problems in its structure. That is, in a conventional general operating rope winder, a pinion meshes with a gear fixed to a rope winding roller, and a pawl piece is biased by a spring on a pawl provided coaxially with the pinion. The rope winding roller is held in the rope winding state by being engaged with the rope winding roller, and the lever is swung by pressing the push button, and a relatively long length is used for this swiveling action. The rope winding roller is unlocked by pushing the sliding plate upward and rotating the pawl pin-coupled to the sliding plate, and a spring is attached to the sliding plate. By providing a biased latch piece and engaging the latch piece with a protrusion formed on the back surface of the lid when the sliding plate moves upward, the rotation of the rope winding roller is brought to a state in which the push button is pressed. Moreover, when the rope is wound up, the sliding plate is released from the restraint and the push button is unlocked by removing the lid.

Therefore, the structure is complex and the number of parts is large, which not only causes an increase in costs, but also has a high failure rate and has serious defects as an emergency device. In addition, since the push button is configured to push up a sliding plate, which is a fairly large member, via a lever, it is difficult to smoothly transmit the pressure applied to the push button to the pawl piece, and there is a loss in force transmission. A considerable amount of pressing force is required to operate the push button, and there is a risk that the operation cannot be performed reliably. Furthermore, when the push button is pressed to release the lock, by releasing or removing the lid, the protrusion on the back of the lid is released from the latch piece on the sliding plate, and the spring spring that biases the claw piece and the own weight of the sliding plate are released. Because the sliding plate is moved downward,
There is a drawback that malfunction may occur due to deterioration over time.

This invention was devised in view of the various drawbacks of the above-mentioned conventional methods, and by having an extremely rational structure, it reduces costs by simplifying the structure, improves operability by smoothing the operation, and improves reliability. A further object of the present invention is to provide an operating rope winder that has a long service life.

Hereinafter, preferred embodiments of this invention will be explained in detail based on the drawings.

In the drawings from FIG. 2 onward, reference numeral 5 indicates a main body housing, and reference numerals 6 and 7 indicate support shafts fixed within the main body housing 5 by caulking. 8 is a rope winding ratchet wheel, 9 is a winding drive ratchet wheel, and both ratchet wheels 8 and 9 are rotatably fitted into each of the support shafts 6 and 7, respectively. The ratchet wheels 8 and 9 are meshed with each other, and locking protrusions 8' and 9' are provided on the front surfaces of the respective ratchet wheels 8 and 9, respectively. Above support shaft 6
A rope winding reel 10 is rotatably fitted into the reel 10, and a protrusion 8' is fitted into a locking hole 10' of the reel 10, so that the reel 10 rotates together with the rope winding ratchet 8. One end of the operating rope (not shown) introduced from the rope entrance/exit 11 via the guide roller 12 is attached to the reel 10.
The rope is connected to the winding portion of the rope by a holding plate 13 and a screw 14, and as the reel 10 rotates, the rope is wound onto the reel 10 or led out from the rope entrance/exit 11.

Reference numeral 15 denotes a locking lever for regulating the rotation of the rope driving ratchet wheel 9, whose base end is pivotally connected to the main body housing 5 by a pivot 16, and by a spring spring 17 wound around the pivot 16. , a locking claw 15' formed on one side of the winding drive drive is biased in the direction opposite to the arrow in FIG. As a result, as is clear from FIG. 3, the winding drive ratchet wheel 8 is restricted from rotating only in the rope winding release direction indicated by the arrow in the figure.

Reference numeral 18 denotes a rotating shaft, and this rotating shaft 18 has a fitting hole 18a having a circular cross section into which the support shaft 7 is externally fitted, and an engaging hole 18b into which the rope winding handle 19 is fitted, which are continuously bored in the axial direction. The notch 18c into which the protrusion 9' is fitted is formed at the edge of one end where the fitting hole 18a is formed. and,
It is rotatably fitted onto the support shaft 7, and the protrusion 9' is fitted into the notch 18c, and the handle 19 is inserted into the engagement hole 18.
By fitting the handle 19 into the handle 19 and rotating the handle 19, the winding drive ratchet wheel 8 is rotated as a unit.

An operating cylinder 20 is slidably fitted onto the rotating shaft 18 . This actuating cylinder 20 has an insertion hole 20a for the rope winding handle 19 formed in the axial direction, and an actuating pin 20 in the orthogonal direction of the insertion hole 20a.
b protrudes from one side, and is further provided with a loose insertion hole 20 for a release holding member, which will be described later, in a direction orthogonal to the axis at the front side.
c is bored, and a locking recess 20d into which the release holding member engages is formed on one rear side of the loose insertion hole 20c, and the winding drive ratchet wheel 9 and the operating cylinder It is always urged forward by a truncated conical spring 21 interposed between the main body housing 5 and the main body housing 5, and is inserted into the cover plate 22 that covers the main body housing 5 through a retaining plate 23 so as to be movable back and forth. The push button 24 is pressed against the push button 24, and the push button 24 is pushed backward against the biasing force of the handle spring 21.

Reference numeral 25 denotes a rope winding release holding member, which is loosely inserted in the vertical direction into the loose insertion hole 20c of the actuating cylinder 20, and a locking piece 25a formed at the upper part is in contact with the outer surface of the actuating cylinder 20, and the locking piece 25a is in contact with the outer surface of the actuating cylinder 20. The bent lower guide piece 25b is loosely inserted into the square hole 26a of the guide shape retaining plate 26 fixed to the main body housing 5, and the sliding plate 27, which is wider than the square hole 26a, is attached to the guide piece 25b. The moving plate 27 is located in the square hole 2 of the guide shape retaining plate 26.
By sliding on the edge of the release holding member 6a, the release holding member 25 moves up and down in the vertical direction. The member 25 is biased downward by a tension spring 28 suspended between the guide shape retaining plate 26 and the guide shape retaining plate 26 . The loose insertion hole 20c of the actuating cylinder 20 into which the release holding member 25 is loosely inserted is connected to the push button 2.
The locking piece 25a is formed sufficiently wide in the axial direction so that the release holding member 25 does not interfere with the rearward movement of the actuating cylinder 20 by pressing the button 4. Locking recess 2
Insert into 0d. Furthermore, a hole 25d for releasing the lock into the locking recess 20d of the locking piece 25a is formed in a substantially central portion of the release holding member 25 facing the insertion hole 20a of the actuating cylinder 20, and a hole 25d for releasing the lock into the locking recess 20d of the locking piece 25a is formed. The upper edge of the hole 25d is formed on an inclined surface 25e,
When the handle 19 is inserted, the distal end of the handle 19 comes into sliding contact with the inclined surface, so that the release holding member 25 is pushed up.

Next, referring mainly to FIGS. 5 and 7, the mechanism for rotating the locking lever 15 in the direction of the arrow in FIG. To explain, 29 is a mounting guide plate, and the plate has three types of elongated guide holes 2.
9a, 29b, 29c and a notch 29d into which the free end of the locking lever 15 is loosely inserted are arranged at appropriate positions and fixed to the lower right side of the main body housing 5. The guide hole 29a has a
By caulking the guide pin 30 that slides on the edge, one end of each of the connecting piece 31 and the winding release member 32 is attached to the winding guide plate 29 with the washer 33 interposed.
Connecting piece 3
An operating pin 20b is rotatably inserted into the other end of the guide hole 29.
b, and the other end of the unwinding member 32 is rotatably coupled to a guide pin 34 that is slidably inserted into the guide hole 29c.
The pressing piece 32b made of synthetic resin provided at the lower part of the protruding piece 32a of the winding release member 32 is located in the notch of the mounting guide plate 29, and the locking lever 1 is biased to rotate by the spring spring 17.
The free end portion of 5 is in contact with the pressing piece 32b.

To explain the operation of the embodiment device having the above structure, under normal conditions, the operating rope is wound onto the reel 10, and the locking claw 15' of the locking lever 15 is driven to wind by the biasing force of the spring spring 17. The winding drive ratchet 9 and the reel 10 are engaged with the winding drive ratchet 9, and the reel 10 is unrotatably locked in the rope winding release direction, which is the direction opposite to the arrow in FIG. Retained.

Next, in the event of an emergency such as a fire, or when you want to ventilate, lightly press the push button 24, and the actuating tube 20 will be pushed rearward (to the left in the figure) from the position shown in Fig. 4. Actuation pin 20 of cylinder 20
b moves from the position shown in Fig. 5a to the position shown in Fig. 5b, and the winding release member 32 connected to the operating pin 20b by the connecting piece 31 is inserted into each guide hole 29a, 29c, respectively. The sliding guide pins 30 and 34 move the locking lever 15 downward as shown in FIG. The reel 10 is then rotated in the direction of the arrow in FIG. 3, and the locking pawl 15' is disengaged from the take-up driving ratchet wheel 9, thereby unlocking the reel 10, and the reel 10 is operated by the tilting force of the smoke exhaust window. A rope is let out from the rope entrance/exit 11. When the push button 24 is pressed, the release holding member 25 moves the operating cylinder 20 backward and slides into contact with the operating cylinder 20.
When the locking piece 25a matches the locking recess 20d, since the release holding member 25 is urged downward by the tension spring 28, the locking piece 25a fits into the locking recess 20d as shown in FIG. insert. Therefore, even if you release your hand from the push button 24 after pressing it, the push button 24 is reliably stopped at the backward movement position shown in FIG. 5b, and the reel 10 continues to rotate without stopping halfway. , the operating rope is instantly paid out.

To close the opened smoke exhaust window, when the cover plate 22 is opened, the push button 24 attached to the cover plate is removed from the front together with the cover plate, exposing the operating cylinder 20, and operating the rope winding handle 19. Cylinder 20
is inserted through the insertion hole 20a and fitted into the engagement hole 18b of the rotating shaft 18. When inserting this handle 19,
When the tip of the handle 19 comes into sliding contact with the inclined surface 25e of the unlocking hole 25d of the release holding member 25, the release holding member 25 is moved upward against the biasing force of the tension spring 28, and the locking piece 25a is the locking recess 2
When the actuating cylinder 20 is released from 0d, the spring 21 returns the operating cylinder 20 to the front side, and the winding release member 32 is moved upward to the position shown in FIG. 5a.
The locking lever 15 is restored and the locking pawl 15' engages with the winding drive ratchet wheel 9 again. Therefore, the winding drive ratchet wheel 9 is rotatable in the rope winding direction in the opposite direction of the arrow in FIG. 3 with respect to the locking pawl 15'.
The rope can be wound by rotating the handle 19 in the rope winding direction, and even if the handle 19 is released during the winding operation, the locking pawl and the winding drive ratchet wheel 9 engage with each other to prevent the winding. The take-up driving ratchet wheel 9 does not rotate in reverse, and the take-up operation can be easily performed.

Note that this invention is not limited to the above-mentioned embodiments, and various embodiments can be considered based on the scope of the claims. Also good.

As explained above, according to the operating rope winder for smoke exhaust windows, etc. of this invention, the locking lever is moved by lowering the winding release member with the operating pin of the operating cylinder that moves forward and backward together with the push button. Since the push button is rotated, the pressing force of the push button is converted into the pressing force of the winding release member without waste, so that the operation can be performed reliably with an extremely small operating force. In addition, the press lock of the push button is carried out by directly locking the release holding member to the operating barrel that operates integrally with the push button, and the press lock is easily and reliably released by moving the release holding member upward using the winding handle. Because of this configuration, stable operation can be achieved over a long period of time. Furthermore, since the configuration is rationally simplified, not only can costs be significantly reduced, but the operation is smooth and the risk of failure is significantly reduced, making this invention an outstanding practical product. This is an epoch-making winder that is highly effective.

[Brief explanation of drawings]

Figure 1 is a perspective view showing how the winder according to this invention is used, Figure 2 and the following figures show an embodiment of the rope winder for use in smoke exhaust windows, etc. of this invention, and Figure 2 is a front view. , FIG. 3 is a partially removed front view, FIG. 4 is a cutaway left side view, and FIGS. 5a and 5b are right side views of a portion in the rope winding state and rope unwinding state, respectively. 6 and 7 are exploded perspective views of essential parts, respectively. 8... Rope winding ratchet wheel, 9... Rope winding drive ratchet wheel, 10... Rope winding ratchet wheel, 15
... Locking lever, 15' ... Locking claw, 17 ... Spring spring, 18 ... Rotating shaft, 18b ... Engagement hole, 19 ... Rope winding handle, 20 ... Operating tube, 20a ... Insertion hole, 20b...operating pin,
20c... Loose insertion hole, 20d... Locking recess, 24...
... Push button, 25 ... Release holding member, 25a ... Locking piece, 25d ... Lock release hole, 25e ... Inclined surface, 32 ... Winding release member.

Claims (1)

[Scope of utility model registration request] The winding drive ratchet wheel is engaged with the rope winding ratchet wheel which is coaxially engaged with the rope winding reel so that the rope winding reel can rotate simultaneously, and the engagement hole into which the rope winding handle is inserted is recessed in the axial direction. A rotating shaft protruding from the front side of the winding drive ratchet wheel so as to be rotatable simultaneously with the ratchet wheel, an insertion hole of the handle being bored in the axial direction, and an operating pin protruding in a direction perpendicular to the axis. The installed actuating cylinder is slidably fitted onto the rotating shaft, and the actuating cylinder is biased forward by a spring, and is engaged with the actuating pin so that the actuating cylinder moves when the push button is pressed. The unwinding member, which is moved downward by this, and the locking pawl, which is biased in one direction and formed on one side, are unrotatably locked against the driving ratchet only in the rope unwinding direction. and a locking lever that is rotated in a direction in which the locking pawl is separated from the driving ratchet wheel by the downward movement of the winding release member; When the actuating cylinder moves backward, the locking piece at the upper end fits into the locking recess of the actuating cylinder, and the above-mentioned locking piece is inserted into the locking release hole whose upper edge is formed into an inclined surface. 1. An operating rope winder for a smoke exhaust window, etc., comprising a release holding member that is moved upward by insertion of a handle to cause a locking piece to disengage from a locking recess.