JPH04116087A - Sliding door device of elevator cage - Google Patents

Abstract

PURPOSE:To enable to maintain the required soundproofing irrespective of the position of cage floor by pressing a block plate against a side wall of a rail groove by engaging a lever with a cam when a sliding door is opened fully in such a way that the block plate slides against the side wall even if cage floor is displaced up and down. CONSTITUTION:When a sliding door 3 is fully closed, a lever 12 is pressed on a cam 13, a link 10 rotates against energizing force of an energizing door 14, and a block plate 11 of a sliding door device of an elevator cage is pressed on a side wall 2b. A clearance between a lower fringe section of the sliding door 3 and a threshold 2 is blocked, and air current noise which is generated due to the clearance when the cage ascends and descends or transmission of noise is reduced. Even if the threshold 2 is displaced in the up and down direction because of elastic support of the cage floor, soundproofing is not impaired because an adherent piece 11b slides, changes, and follows the side wall 2b. When the sliding door 3 starts to open, the lever 12 is disengaged from the cam 13, the block plate 11 retracts by an energizing piece 14, and the adherent piece 11b comes apart from the side wall 2. Consequently, open and close resistance of the sliding door 3 does not increase, and it operates smoothly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sliding door device for an elevator car that opens and closes an entrance/exit by linear movement.

[Prior Art] Figures 4 and 5 show a conventional elevator sliding door device as shown in, for example, Japanese Utility Model Application Publication No. 52-61069, and in Figure 9, (1) shows a fixing part of a car (not shown). (2) is a sill attached to the edge of the car floor that is elastically supported with respect to the car.

(2a) is a groove recessed along the length of the sill (2).

(3) is a hanging hand (3a) supported by the rail (2) at the top end
A leg (3c) is provided, the lower end (3b) is placed in a position higher than the upper surface of the sill (2), and the leg (3c) is fitted into the groove (2a).
The sliding door (4) is located apart from each other near the lower front edge of the sliding door (3), and the L-shaped bent part is pivoted to the sliding door (3) with an L-shaped link, and one side of the L-shaped is the threshold (2
) plane, with the other side facing upward. (5)
(6) is attached to the lower surface of the closing plate (5) and connects to the upper surface of the sill (2) and the sliding door (3). The adhesive piece (7) made of a viscoelastic material such as rubber that adheres to the front surface has both ends pivotally attached to the rotating ends of the upward sides of the link (4), and one end protrudes beyond the side edge of the sliding door (3). The actuating rod is located at
Reference numeral 8) is a biasing element consisting of a compression coil spring whose both ends are supported by the upward side of the link (4) and the sliding door (3), respectively, and biases the link (4) clockwise in FIG. 4.

(9) is a blocking body that stands up from the sliding door (3) and blocks clockwise rotation of the link (4) at a predetermined position.

The conventional elevator sliding door device is constructed as described above, and when the sliding door (3) is not fully closed, the closing plate (5) is held in the raised position by the biasing element (8) and the closing plate (5) is held at the raised position as shown in Fig. 4. (2) A gap is formed between the top surface and the contact piece (6).

When the sliding door (3) is fully closed, the tip of the operating rod (7) collides with a fixed body (not shown) on the edge of the doorway. As a result, the link (4) rotates counterclockwise in FIG. 4 against the biasing element (8), and the closing plate (5) descends.
The contact piece (6) comes into close contact with the surface of the sliding door (3) and the upper surface of the sill (2), and the gap between the lower edge of the fully closed sliding door (3) and the sill (2) is closed as shown in FIG. And the sliding door (3)
This is designed to reduce the generation of car ascending and descending airflow noise caused by air flowing through the gap between the lower edge and the sill (2), as well as the transmission of noise.

[Problems to be Solved by the Invention] In the conventional elevator sliding door device as described above, the vertical position of the car floor relative to the car fluctuates due to fluctuations in the load within the car. For this reason, the adhesive piece (6) may float up against the upper surface of the sill (2) or be pressed against it unnecessarily.
There were problems in that the soundproofing properties were insufficient and members such as the link (4) were deformed.

This invention was made in order to solve these problems, and provides a sliding door for an elevator car that can stably close the gap at the lower edge of the elevator car against vertical displacement of the elastically supported car floor. The purpose is to obtain equipment.

[Means for Solving the Problems] In the elevator corner sliding door device according to the present invention, a closing plate is attached to the lower end surface of the sliding door via a link mechanism and faces the side wall of the groove of the sill, and a closing plate is provided that projects from the link mechanism. A cam is provided that engages the lever when the sliding door is fully closed.

[Operation] The closing plate of the elevator car sliding door device configured as described above is biased in a direction away from the side wall of the groove, and when the sliding door is fully closed, the lever engages with the cam and rotates. Pressed against the side walls of the groove.

Embodiment] FIGS. 1 to 3 are diagrams showing an embodiment of the present invention. In FIG. 9, the same reference numerals as in FIGS. 4 and 5 indicate corresponding parts.
b) is provided vertically on the side wall of the groove (2a), (9) is provided vertically on the lower end surface (3b) of the sliding door (3), and the groove (2a) is provided in the groove (2a).
axes spaced apart from each other along the length of (10)
(11) is a link arranged on each of the shafts (9) with one end pivotally supported by the shaft (9), and (11) is arranged opposite to one side wall (2b), and both ends are pivoted by the link (10). The closing plate is pivotally attached to the end, and there is a notch (
11a) is formed. (llb) is an adhesive piece made of a viscoelastic material such as rubber, which is attached to the surface of the closing plate (11) facing the side wall (2b), and its upper edge is placed in contact with the lower end surface (3b). (12) is connected to the pivot end of one link (10) and protrudes horizontally, and a roller (12a) is attached to the protruding end.
(13) is a cam fixed to the side wall (2b) and has a slope that engages with the roller (12a) when the bow door (3) is fully closed;
) and the other end thereof is a biasing element made of a tension spring held by a projection protruding from the lower end surface (3b).

When the sliding door (3) is fully closed, the closing plate (11) of the elevator car sliding door device configured as described above is activated by the lever (1).
2) is pressed by the cam (13) and the link (10) rotates against the biasing force of the biasing element (14), so that the side wall (
2b) is pressed. This closes the gap between the lower edge of the sliding door (3) and the sill (2), reducing airflow noise and noise transmission caused by the gap when the car is raised and lowered.

Even if the sill (2) is displaced in the vertical direction due to the elastic support of the car floor, the contact piece (llb) will slide and displace relative to the side wall (2b), resulting in a loss of soundproofing properties. It won't happen.

Note that when the sliding door (3) starts to open, the lever 2) comes off the cam (13) and the biasing element (14) closes the closing plate (11).
) retires and the contact piece (llb) separates from the side wall (llb). Therefore, the sliding door (3) operates smoothly without increasing the opening/closing resistance.

[Effects of the Invention] As explained above, in this invention, when the sliding door is fully closed, the lever engages the cam, so that the closing plate is pressed against the side wall of the groove of the sill. Therefore, even if the elastically supported car floor is displaced vertically, the closing plate will slide against the side wall.

This has the effect of obtaining the required soundproofing properties regardless of the position of the car floor.

[Brief explanation of drawings]

Fig. 1 is a diagram showing one embodiment of the sliding door device for an elevator car according to the present invention, and corresponds to Fig. 5, which will be described later. Fig. 2 is a reduced cross-sectional view of Fig. FIG. 4 is a front view showing a conventional elevator sliding door device, and FIG. 5 is an enlarged cross-sectional view taken along the line V-V in FIG. 4. In the figure, (2) is the sill, (2a) is the groove, (2b
) is the side wall, (3) is the sliding door, (3b) is the bottom surface, (9
) is the axis. (lO) is a link, (11) is a blocking plate, (llb
) is a close contact piece. (12) is lever, (13) is cam, (14)
is a pusher. In addition, the same parts or corresponding parts in FIG. 9 are indicated by the same reference numerals.

Claims (1)

[Claims] A sliding door whose upper end is supported by the car and whose lower end is guided by a groove recessed in the sill of the vibration-proof floor of the car to open and close; shafts disposed and spaced apart from each other in the longitudinal direction of the groove; links disposed respectively on these axes and having one end pivotally supported; and links disposed facing the side walls of the groove and having both longitudinal ends thereof. A closing plate is provided on the sliding door, each of which is pivotally connected to the rotating end of the link and has a contact piece of a viscoelastic material adhered to the surface facing the side wall and whose upper edge is in contact with the lower end surface. a biasing element for urging the closing plate away from the side wall; a lever having one end connected to the pivoting end of the link and protruding horizontally; A sliding door device for an elevator car, comprising: a cam that engages with a protruding end of a lever and rotates the link in a direction in which the closing plate approaches the side wall.