JPH0117577Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the structure of an unlocking device for an elevator hall.

First, the elevator hall system will be explained with reference to FIGS. 1 and 2.

In the figure, 1 is the entrance/exit of the elevator hall, 2 is a left-hand door that opens and closes this and opens to the left as seen from the elevator hall side, 2a is the hanger of door 2, and 3 is the door that opens and closes this door. A hanger case fixed to the upper edge of the doorway 1 and supporting the hanger 2a; 4 a fixed roller pivotally mounted on the back side of the door 2; 5 a movable roller placed opposite the fixed roller 4 on the back side of the door 2. 7 is a locking device; 7a is a hook bar of the locking device 7 whose middle part is pivotally supported on the hanger 2a;
b is a hook provided on one end of the hook bar 7a, 7c is a link connecting the other end of the hook bar 7a and the arm 6, 7d is an engaging element fixed to the hanger case 3 and facing the hook 7b, and 8 is a basket ( When the car door (not shown) faces the landing, a driving plate is provided on the car door (not shown) and placed between the fixed roller 4 and the movable roller 5; 9 is an unlocking device provided on the door 2; , 9a is door 2
The operating piece of the unlocking device 9 provided on the back side of the arm 6
is placed opposite.

That is, when the door 2 fully closes the entrance/exit 1, the hook 7b engages with the engaging element 7d as shown in FIG. 1, locking the door 2 and preventing the door from being opened by manual operation from the elevator landing. . Then, when the car stops at the landing and the car door opens, the movable roller 5 is pressed and displaced by the drive plate 8 due to the initial movement of the car door, and the first
In the figure, the hook bar 7a is rotated clockwise, the hook 7b is disengaged from the engaging member 7d, and the door 2 is opened together with the car door via the drive plate 8. Then, when the car door is closed, the door 2 is also closed together, and in the fully closed position, the hook 7b rides on and engages the engaging element 7d, and the door 2 is locked. On the other hand, it is necessary to open the door 2 for inspection etc. inside the elevator hoistway, but at this time, operate the unlocking device 9 using a predetermined key from the keyhole of the unlocking device 9 on the front side of the door 2, The door 2 is opened by displacing the arm 6 via the operating piece 9a to release the hook 7b. However, in addition to the elevator landing equipment equipped with the left-handed door 2 shown in Figures 1 and 2, there is also one equipped with a right-handed door (not shown) that opens to the right. In order to facilitate the operation of the locking device, it is necessary to make the keyhole position and shape the same for left-hand and right-hand hands, but this requires preparing parts for each hand, which takes a lot of time and effort. There were flaws.

This invention solves the above-mentioned drawbacks and aims to provide an elevator landing unlocking device that can share parts for left-hand and right-hand doors.

An embodiment of this invention will be described below with reference to FIGS. 1 to 9.

In the figure, the same symbols as in Figure 1 indicate the same parts, 2b
is a through hole provided in the door 2, 9b is an outer cylinder of the unlocking device 9, a flange 9c is provided at one end and inserted into the through hole 2b, a screw 9d is provided on the outer periphery,
Further, an opening 9e is provided on the flange 9b side. 9f is the bottom surface of the opening 9e, 9g is a hole penetrating the bottom surface 9f, 9h is a nut screwed into the screw 9d and clamps the door 2 with the flange 9c, and 9i is a shaft made of a round bar and loosely inserted into the hole 9g. 9j is engaged with the middle part of the shaft 9i and the outer cylinder 9b
C-rings provided on both sides of the bottom of the 9
k is a screw provided on the outer end of the outer cylinder 9b of the shaft 9i, 9l is a projection provided inside the opening 9e of the shaft 9i and protrudes from the shaft 9i, and 9m is screwed into the screw 9k. Nuts placed on both sides of the actuating piece 9a to clamp the actuating piece 9a; 9n is an engagement piece welded to the end face inside the opening 9e of the shaft 9i and having a triangular shape and an outer diameter larger than the diameter of the shaft 9i; 9p is loosely fitted into the opening 9e, the center part is loosely fitted to the shaft 9i, and a recess 9g corresponding to the shape of the engagement piece 9n is formed on the surface, into which the engagement piece 9n is loosely fitted. cover piece, 9
r is a push spring whose both ends face the bottom surface 9f and the back surface of the lid piece 9p, respectively; 9s is recessed in the bottom surface 9f and is configured in a fan shape of 120 degrees at the edge of the hole 9g;
l is fitted to limit the displacement range of the protrusion 9l; 9t is provided at the end of the shaft 9i, and the screw 9
9u is a first fitting hole provided at one longitudinal end of the actuating piece 9a and fitted into the fitting part 9t; 9v is a fitting part formed by removing the k surface smoothly; 9v is a first fitting hole formed at one longitudinal end of the actuating piece 9a; A second fitting hole is provided at the other end and is formed to be able to fit into the fitting part 9a, and is arranged 120 degrees out of phase with the first fitting hole 9u; 10 is a box spanner-shaped key; An engagement hole 10a is provided at one end with an outer diameter that fits loosely into the opening 9e, and has a shape corresponding to the engagement piece 9n and fits loosely into the engagement piece 9n. Further, in FIGS. 6 and 7, 2' is a right-hand door.

That is, the outer cylinder 9b is fixed to the door 2, and the outer cylinder 9b is fixed to the door 2.
An intermediate portion of the shaft 9i is pivotally supported by the shaft 9i, and an engagement piece 9n is fixed to the inner end surface of the opening 9e of the shaft 9i. Further, an actuating piece 9a is fixed to an end portion of the shaft 9i on the outside of the outer cylinder 9b. Then, the lid piece 9p is loosely fitted into the opening 9e, loosely fitted onto the shaft 9i, pressed by the push spring 9r, and brought into contact with the back surface of the engagement piece 9n to be held at a predetermined position on the open end side of the opening 9e. Ru. Further, the protrusion 9l is engaged with the blocking mechanism 9s, and the rotation range of the shaft 9i is 120°.
limited to. For the left-hand door 2, as shown in FIG.
The fitting hole 9u is fitted into the fitting part 9t and fixed,
For the right-hand door 2', as shown in FIG. 7, the operating piece 9a is fixed to the shaft 9i by fitting the second fitting hole 9v into the fitting part 9t. In this way, the same actuating piece 9a can be used for the left-hand door 2 and the right-hand door 2'.
The shape of the engaging piece 9n, that is, the keyhole, is the same for the left and right hands as shown in Figures 3 and 6, which prevents misunderstandings when operating the unlocking device 9. will not occur. In this embodiment, since the gap between the opening 9e and the engaging piece 9n is closed by the cover piece 9p, it is possible to prevent the unlocking device 9 from being operated unnecessarily by a tamper. In addition, since the lid piece 9p is engaged with the engaging piece 9n, it is held in a predetermined position, so the outer diameter of the outer cylinder 9b can be reduced, making it small and inconspicuous without spoiling the aesthetics. A locking device is obtained.

When unlocking the locking device 7, insert the key 10 into the opening 9e and use the edge of the engagement hole 10a to lock the lid piece 9.
By pushing in p and fitting the engagement piece 9n into the engagement hole 10a and rotating the key 10, the arm 6 is operated through the displacement of the actuation piece 9a, and the lock device 7 is unlocked.

As explained above, the present invention pivots the middle part of the shaft to an outer cylinder that is fixed to the door and has a bottomed opening on the surface of the door, and forms a triangular shape on the shaft end surface inside the opening. Fix the engagement piece and limit the rotation range of the shaft.
120°, and a fitting part is provided on the protruding end of the outer cylinder of the shaft, and the operating piece for unlocking the locking device has a first fitting hole and a first fitting part that fits into the fitting part. A second fitting hole is provided that is 120 degrees out of phase with the hole, and when the door is on the left or right side, the first
The actuating piece is fixed to the shaft via the fitting hole, and in the case of the other of the above, the actuating piece is fixed to the shaft via the second fitting hole. As a result, the same actuating piece can be used for both of the above and can be manufactured easily, and the arrangement of the engaging pieces is the same for both of the above, so that there is no confusion during the unlocking operation of the elevator landing. This realizes a lock unlocking device.

[Brief explanation of drawings]

Fig. 1 is an elevational view conceptually showing the back side of the elevator landing device, Fig. 2 is an elevational view of the front side of Fig. 1, and Fig. 3 is an embodiment of the elevator landing unlocking device according to this invention. 2 is an enlarged view of the part shown in FIG. 2, FIG. 4 is a sectional view taken along the - line in FIG. 3, FIG. A diagram equivalent to Figure 3 showing the state in which it is installed on a door with the opposite hand.
Fig. 7 is a diagram equivalent to Fig. 5 corresponding to Fig. 6, Fig. 8 is a front view of the key of the unlocking device shown in Fig. 3, and Fig. 9 is a diagram corresponding to Fig. 8.
FIG. 3 is a right side view of the figure. 2 is a door, 7 is a locking device, 9 is an unlocking device, 9a is an operating piece, 9b is an outer cylinder, 9e is an opening, 9f is a bottom surface,
9i is a shaft, 9l is a projection, 9n is an engaging piece, 9s is a blocking mechanism, 9t is a fitting part, 9u is a first fitting hole, 9v
indicates the second fitting hole, and the same parts in the figures are indicated by the same reference numerals.

Claims (1)

[Scope of utility model registration request] A door installed in an elevator landing and having a locking device that prevents the door from being opened by operation from the landing side when fully closed, and having a bottomed opening fixed to the door and opening on the front side of the door. an outer cylinder, a shaft having a rod shape, one end of which is disposed within the opening, an intermediate portion of which is pivotally supported on the bottom of the opening, a longitudinal end of which is held in a predetermined position, and a fitting portion provided at the other end; a protrusion protruding from the outer periphery of the protrusion; a blocking mechanism provided on the outer cylinder to face the protrusion and limit the displacement range of the protrusion to 120° when the shaft is rotated; A triangular engagement piece fixed to the inner end surface of the opening of the shaft, a first fitting hole that fits into the fitting part of the shaft at one longitudinal end, and a first fitting hole that fits into the fitting part of the shaft at the other longitudinal end. The first part is formed to be fitable in the fitting part.
A second fitting hole is provided which is 120 degrees out of phase with the fitting hole, and is fixed to the end of the shaft through either the first fitting hole or the second fitting hole, so that the locking device An unlocking device for an elevator hall, comprising an actuating piece that operates to unlock the elevator hall.