CN1754819A

CN1754819A - Elevator door device

Info

Publication number: CN1754819A
Application number: CN 200510088433
Authority: CN
Inventors: 福家毅; 坂井满; 重田政之
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2004-09-29
Filing date: 2005-07-29
Publication date: 2006-04-05
Also published as: JP2006096489A

Abstract

The invention relates to an elevator door device which is provided with cage doors (1a,1b) that are arranged at the passageway of an elevator and elevator door safety devices (6,7), wherein, the elevator door safety devices (6,7) are provided with elevator safety door boots (5a,5b) which moves in parallel corresponding to the cage doors (1a,1b) along the horizontal direction, wherein, the force generated by the deadweight of a heavy hammer (14) is imposed on the door boots (5a,5b) towards the close direction of the cage doors (1a,1b). The elevator door device can prevent the feet of passages to be nipped between the lower ends of the elevator safety door boots and the upper end of a threshold and the possibility for the failure of the elevator safety door boots is little.

Description

Elevator door apparatus

Technical field

The present invention relates to a kind of elevator door apparatus.

Background technology

As look-ahead technique, for example, in patent documentation 1, disclose a kind of elevator door apparatus, in this elevator door apparatus, advanced linkedly with the switch motion of elevator cab door or the door boots of the electric elevator door safety device that retreats move in the horizontal direction abreast with respect to elevator cab door.So, different with the situation of elevator door safety shoe tilt slide when the elevator door safety shoe slides in the horizontal direction, can guarantee to have little gap between the lower end of elevator door safety shoe and the door upper end, thereby the pin that can prevent the passenger is clamped.

Patent documentation 1 spy opens flat 8-59156 communique (paragraph numbering 0049 etc.)

In above-mentioned look-ahead technique, different when the elevator door safety shoe is slided in the horizontal direction with the situation of elevator door safety shoe tilt slide, can't rely on focusing on certainly of elevator door safety shoe to make moment keep balance on the direction that elevator door cuts out.For this reason, need to adopt other mechanisms application of force on the direction that elevator door cuts out, in above-mentioned patent documentation 1, adopted spring as force application mechanism., spring is after long-term use, and its elastic force descends, and the phenomenon that makes the elevator door safety shoe of retraction can't reset and cause fault to produce because of elastic force decline might occur.And, in above-mentioned patent documentation 1,, used many connecting devices in order to make the action of elevator door safety shoe, so not only cost increases, and the possibility of et out of order also increases greatly.

Summary of the invention

The object of the present invention is to provide a kind of elevator door apparatus, this elevator door apparatus can prevent that passenger's pin is sandwiched between the lower end and door upper end of elevator door safety shoe, and the possibility that the elevator door safety shoe breaks down is very little.

To achieve these goals, elevator door apparatus of the present invention has car door and the electric elevator door safety device that is arranged on the elevator doorway place, this electric elevator door safety device has the door boots that move abreast with respect to described car door along continuous straight runs, wherein, the direction of closing towards described car door is applied on the described door boots by the power that deadweight produced of weight.

(invention effect)

As mentioned above, according to structure of the present invention, can provide a kind of elevator door apparatus, this elevator door apparatus can prevent that passenger's pin is sandwiched between the lower end and door upper end of elevator door safety shoe, and the possibility that the elevator door safety shoe breaks down is very little.

Description of drawings

Fig. 1 is the whole front view of the elevator door apparatus of expression one embodiment of the invention.

Fig. 2 is the amplification stereogram of the car door 1b bottom detailed structure of presentation graphs 1.

Fig. 3 is the car door enlarged front view of the elevator door safety shoe top detailed structure when switch just of expression present embodiment.

The enlarged front view of the elevator door safety shoe top detailed structure when Fig. 4 will close for the car door of expression present embodiment at once.

The enlarged front view of the elevator door safety shoe top detailed structure when Fig. 5 has closed for the car door of expression present embodiment.

Among the figure: 1-car door, 2-suspension bracket, 3-suspension bracket roller, 4-guide rail, 5a, 5b-elevator door safety shoe, 6-outstanding side electric elevator door safety device, 7-retraction side electric elevator door safety device, 8-elevator door safety switch, 9-upper bar, 10-lower pole, 11,12-bar guiding piece, 14-weight, 15-switch cam, 16,20,21,29-limiting device, 17-the seat roller ridden, 18-ride and sit bar, 19-ride the use of revenue to finance expense frame, 22-the seat cam ridden, 23-lift car, 24-support, 25-rope, 26-pedestal, 27-pulley, 28-padded coaming, 31-weight guiding piece, 33-door, 34-door boots.

The specific embodiment

Followingly describe with reference to the embodiment of accompanying drawing to elevator door apparatus of the present invention.

Fig. 1 is the front view of the elevator door apparatus of expression one embodiment of the invention, and this elevator door apparatus is a kind of elevator door apparatus from central opposite opened, has the left and right sides car door 1a, the 1b that are arranged on the elevator doorway place and open towards mutual opposite direction.Be provided with car door suspension bracket 2a, 2b on the top of car door 1a, 1b, this car door suspension bracket 2a, 2b have suspension bracket roller 3a～3d.This car door suspension bracket 2a, 2b are configured to rely on suspension bracket roller 3a～3d to make parallel motion on guide rail 4.

In addition, car door 1a is provided with outstanding side electric elevator door safety device 6, and this outstanding side electric elevator door safety device 6 has when described car door 1a closes than the also outstanding outstanding side elevator door safety shoe 5a outside of the closed end of car door 1a.Another car door 1b is provided with retraction side electric elevator door safety device 7, and this retraction side electric elevator door safety device 7 has when car door 1b closes also wants retraction at interior retraction side elevator door safety shoe 5b than the closed end of car door 1b.Wherein, on outstanding side elevator door safety shoe 5a and retraction side elevator door safety shoe 5b, be respectively arranged with upper bar 9 and lower pole 10.And upper bar 9 is supported by the bar guiding piece 11 that is fixed on car door top and can slide in the horizontal direction, and lower pole 10 is supported by the bar guiding piece 12 that is fixed on the car door bottom and can slide in the horizontal direction.Thus, outstanding side elevator door safety shoe 5a and retraction side elevator door safety shoe 5b also can slide in the horizontal direction with respect to car door 1a, 1b.

Wherein, outstanding side elevator door safety shoe 5a or retraction side elevator door safety shoe 5b are that frame side is when retreating sandwiching foreign matter etc. towards the direction that car door is opened, the switch cam 15 that is arranged on the lower pole 10 is moved back towards the doorframe rear flank with lower pole, and elevator door safety switch 8 detects foreign matter.

Fig. 2 is the details drawing of force application structure, wherein, force application structure on the closing direction of car door 1b to the retraction side elevator door safety shoe 5b application of force.Elevator door safety shoe 5b and lower pole 10 and support 24 form integratedly and are supported also and can be slided in the horizontal direction by bar guiding piece 12.Support 24 is provided with rope 25, and this rope 25 is via linking to each other with weight 14 with the pulley 27 that rotatable mode is arranged on the car door 1b by pedestal 26.This weight 14 is constrained to and can only moves up at upper and lower by weight guiding piece 31.

So, though rely on the deadweight of weight 14, to the elevator door safety shoe 5b application of force, but contact with limiting device 29 by the padded coaming 28 that is installed on the support 24 on the direction more outstanding than the closed end of car door 1b, the elevator door safety shoe 5b during to normal switch carries out spacing.On the other hand, because of detecting foreign matter etc. when frame side retreats, its end position is subjected to the restriction of retraction side limiting device 16b shown in Figure 1 at elevator door safety shoe 5b.At this, 5b is that example is illustrated with retraction side elevator door safety shoe, and the situation of outstanding side elevator door safety shoe 5a too.

Fig. 3 to Fig. 5 represents structure that retraction side elevator door safety shoe 5b is retreated, when car door is closed, the roller of retraction side elevator door safety shoe 5b top moves and rides on the cam of lift car, and retraction side elevator door safety shoe 5b is retreated to than the closed end of the car door state of retraction more.

Below this retreated structure be described in detail.At first, be provided with on the top of retraction side elevator door safety shoe 5b and ride use of revenue to finance expense frame 19, this is ridden use of revenue to finance expense frame 19 and rotatably supports to ride and sit bar 18.And, sit roller 17 riding to have installed on the front end of sitting bar 18 to ride, and, sit bar 18 rotations in order to limit to ride, also installed to ride and sat

bar limiting device

20,21.

As shown in Figure 3, when elevator door just in switch, rely on limiting device 21 restrictions to ride to sit bar 18 and rotate towards anticlockwise direction.And, as car door 1b during, ride and sit roller 17 and move and ride in and be fixed in riding on the car door guide rail 4 and sit on the cam 22 near gangway place central, thus, ride and sit bar 18 and rotate toward the clockwise direction.

, as shown in Figure 4, sit roller 17 and ride in when sitting on the cam 22 when riding, ride and sit bar 18 under the effect of limiting device 20, stop to rotate with the sun, from this moment, elevator door safety shoe 5b begins to retreat.

And as shown in Figure 5, when car door 1a, 1b had closed, elevator door safety shoe 5b rode under the effect of sitting cam 22 above-mentioned, retreats on its front end and the contacted position of elevator door safety shoe 5a.At this moment, limiting device 16b contacts with elevator door safety shoe 5b, thereby elevator door safety shoe 5b can't further be retreated.And elevator door safety shoe 5b is configured to, and rides in when sitting on the cam 22 riding to sit that roller 17 moves and be about to begin at once, make the Signal Fail of elevator door safety switch 8b, therefore, even elevator door safety shoe 5b retreats, car door 1a, 1b also can not reverse and door is opened.

According to present embodiment, by be mounted on the bar and the weight of the level on the elevator door safety shoe with rope, can be to the elevator door safety shoe application of force on the direction that car door is closed.Because this power is to utilize the power that deadweight produced of weight, so can not descend after long-term use as the elastic force of spring, therefore, the elevator door safety shoe of the retraction possibility that fault produces such as can't reset descends.And, because the quantity of member is few, thus the possibility that fault produces not only can be reduced, but also can cost-cutting.In addition, though the action of elevator door safety shoe, because the clearance G between door upper end and the elevator door safety shoe lower end is constant, so can reduce the danger of clamping passenger's feet because of this clearance G expansion.And, owing to can detect the foreign matter that is clipped in the car door below, so reliability is improved.

And, in the present embodiment, with two door leafs be that example is illustrated from central opposite opened elevator door, but also go for having the elevator door of varying number door leaf.And, in the elevator door of other open type, owing to when elevator door cuts out, do not need to make the retraction of elevator door safety shoe, so its structure is identical with the structure of Fig. 1 offside door.

Claims

1. elevator door apparatus, this elevator door apparatus has car door and the electric elevator door safety device that is arranged on the elevator doorway place, and this electric elevator door safety device has the door boots that move abreast with respect to described car door along continuous straight runs, it is characterized in that:

The direction of closing towards described car door is applied on the described door boots by the power that deadweight produced of weight.

2. elevator door apparatus, this elevator door apparatus is a kind of elevator door apparatus from central opposite opened, has: be arranged on the place, gangway of elevator and the left and right sides car door of opening towards opposite direction mutually; Outstanding side electric elevator door safety device, this outstanding side electric elevator door safety device has outstanding side door boots, and these outstanding side door boots are also more outstanding outside than the closed end of described car door when described car door is closed; Retraction side electric elevator door safety device, this retraction side electric elevator door safety device has retraction side door boots, and these retraction side door boots also want retraction interior than the closed end of described car door when described car door is closed; Described outstanding side door boots and retraction side door boots move abreast with respect to described car door along continuous straight runs, it is characterized in that:

On the direction also more outstanding than the closed end of described car door, the power that deadweight produced by separately weight is applied on described outstanding side door boots and the retraction side door boots, the roller of described retraction side door boots top, when described car door is closed, ride on the cam of lift car, and described retraction side door boots retreat into the state of also wanting retraction than the closed end of described car door.

3. elevator door apparatus according to claim 2 is characterized in that described roller is installed in the front end of bar, and this bar rotatably is supported on the top of described retraction side door boots.