JPH02239089A - Threshold device for entrance of elevator - Google Patents

Abstract

PURPOSE:To make the end face of a sub-threshold the same level as the floor surface of a cage and form the extension of the floor surface of the cage by providing the sub-threshold having the end face which is engaged with a link mechanism to form the extension of the floor surface of the cage and a guide for making the sub-threshold obliquely advance in the close vicinity to the entrance side of the floor surface of the cage. CONSTITUTION:As the cage of an elevator is lifted up/down approaching the floor of each story, one end portion of a lever 15 is brought into contact with a fixed cam provided on either of the entrance door side of a lifting passage and moved to the innermost direction from the entrance side of the cage, to be rotated with a rotatably supported point on the underfloor of the cage as a fulcrum. Due to the rotation of the lever 15, a link plate 24 which is engaged with the other end portion of the lever 15 with a link mechanism is moved, causing a sub-threshold 26 which is engaged with the other end portion of the link plate with a link mechanism to be held by a guide 25 and to obliquely advance in close vicinity to the entrance side of the floor surface of the cage, thereby making the other end portion of the sub-threshold the same level as the floor surface of the cage. Thus, the end face of the sub-threshold forms the extension of the floor surface of the cage.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an elevator, and particularly to an elevator suitable for reducing the gap between the landing floor and the car floor when the car is stopped at each floor. Regarding doorway threshold devices. [Prior Art] An elevator is provided with a certain gap between the landing floor and the car floor in order to avoid accidental contact with the landing floor due to shaking when the car passes through each floor. However, this gap caused shocks when transporting heavy loads using trolleys, etc., and the wheels fell into the gap and became stuck, causing problems when transporting precision machinery, transporting seriously ill people at hospitals, or handling carts. . Conventional nailing that solves these problems was developed in 1973.
It was as described in Japanese Utility Model Application Publication No. 9-71270, Japanese Utility Model Application Publication No. 59-187683, and Japanese Utility Model Application Publication No. 60-104576. [Problems to be Solved by the Invention] In all of the above-mentioned conventional technologies, an auxiliary sill is provided on the cage as a means of reducing the gap between the landing floor and the car floor, and the auxiliary sill is configured to rotate or move. No consideration was given to the fact that the capacity of the door opening/closing motor would be large due to the provision of a drive device or the use of the force for opening and closing the door, and all conventional techniques are limited to horizontally opening doors. Therefore, there were problems such as not being able to apply it to vertically opening doors. The purpose of the present invention is to solve the above problems and reduce the shock to the transport vehicle when using the elevator overnight by reducing the gap between the landing floor and the car floor using a simple mechanism. [Means for Solving the Problems] The above purpose is to provide a fixed cam provided on either side of the entrance/exit door of the hoistway, and one end of which is in contact with the fixed cam and is pivotally supported under the car floor on the side of the entrance/exit. a lever, a link plate whose one end engages with the other end of the lever through a link mechanism bridge, and a plate-shaped link plate whose end on the underside of the car floor engages with the other end of the link plate through a link mechanism; an auxiliary sill whose end on the floor side of the engagement car has a flat end surface similar to the floor surface of the car;
This is achieved by providing an elevator entrance/exit 1-1 sill device having a guide for moving the auxiliary sill obliquely close to the entrance/exit side of the floor surface of the car.

[Effect]

When the elevator car ascends and descends and approaches the floor of each floor, one end of the lever comes into contact with a fixed cam installed on either side of the entrance/exit door of the hoistway, and the elevator car moves in the direction from the entrance/exit side of the elevator. The lever rotates using a pivot point under the floor as a fulcrum.
As the lever rotates, the link plate that is engaged with the other end of the lever by the link mechanism moves, and the auxiliary sill that is engaged with the other end of the link plate by the link mechanism is held by the guide and moved to the entrance/exit side of the floor of the car. The other end of the auxiliary sill will be at the same level as the floor surface of the heel.
In this way, the end face of the auxiliary sill forms an extension of the car floor, reducing the gap between the landing floor and the car floor. [Example] An example of the present invention will be described below with reference to FIGS. 1 to 8. Figure 1 shows an overall plan view of an elevator equipped with the doorway sill device of the present invention. In the figure, 1 is a car placed in the hoistway 2, and 3 (not shown) is attached to the guide rail 4 fixed to the rail brackets 3 and 3#.
It is guided by rollers etc. in the direction. 5 is a landing frame, 6 is a landing door 8 equipped with an engagement roller 7
This is the landing threshold that guides you. 9 is a car sill that guides a car door 11 equipped with an engagement plate 10. Reference numeral 12 denotes a fixed cam on the hoistway side, which connects the hoistway 2 via a member 13.
It is fixedly installed. The roller 14 is a roller supported by a shaft 16 fixed to one end of the lever 15. Next, the structure for driving the auxiliary sill of the car will be explained with reference to FIGS. 2 to 5.

Figure 2 is a sectional view taken along line A-A in Figure 1 showing the overall structure of the present invention, Figure 3 is a side view and is a sectional view taken along line B-B in Figure 1, and Figure 4 is also a side view taken along line C in Figure 1. Figure 5 is a plan view of the link plate portion, and is a sectional view of Figure 3. In FIGS. 2 to 5, the roller 14 is rotatably attached to a shaft 16 by a ball bearing 17. A rotary shaft 18 is supported by two bearings 20 installed at both ends of the floor frame 19 of the car, and is fixed at one end near the center of the lever 15 and at the other end with a key 22 at one end of the lever 21. ing. In other words, the lever 15, 21 and the rotating shaft are integrated. The other end of the lever 15.21 is rotatably connected to one end of a link plate 24 by a shaft 23, and the other end of the link plate 24 is fixed to an upper inclined portion 19a of the car floor frame 19. Threshold guide 25
The auxiliary sill 26 is guided by a bolt 27 and is rotatably connected to the auxiliary sill 26. As shown in FIGS. 3 and 4, this auxiliary sill 26 is normally located at a position where its front end cannot come out from the car sill 9 so as not to interfere with the engagement roller 7 on the landing side. Eight dimensions are 20-40am
is normal.

The present invention has the above structure.

Next, the operation of reducing the gap between the landing floor and the car floor using the doorway sill device of the present invention will be explained with reference to FIG. Figure 6 is a side view corresponding to Figure 3, showing the state in which the auxiliary sill is moved forward. When the floor of the car comes near the landing floor of each floor, the roller 14 is pushed by the fixed cam 12 of the hoistway, the lever 15 rotates counterclockwise around the bearing 20, and the link plate 24 connected to the other end is pushed. At the same time, the lever 21 integrated with the lever 15 along with the rotating shaft 18 similarly rotates around the bearing 20, and the auxiliary sill 26 is pushed up diagonally upward through the link plate 24 connected to the other end. Push the sill 26 diagonally upward from the right side and move it forward. Auxiliary threshold 26
is guided by a guide 25, and moves smoothly forward and backward close to the threshold 9. At this time, it is desirable to make dimension B as small as possible, and it is sufficient to leave a gap of about 5 am after installation and set-up at the site. Here, if the length of the fixed cam 12 is set so that the mouth roller 14 operates only in the vicinity where the car floor is 1M with the level of each floor, the auxiliary sill in the middle of the floors is as shown in FIG. The landing area and the car's engagement device part will not interfere with the other side's sill because the gap between the landing floor and the car floor is 8 dimensions. In conventional elevators that are not provided with means for reducing the gap between the landing floor and the car floor, as shown in FIGS. 7 and 8, the wheels 29 of the trolley 28 may fall into the gap between the two sills, causing the cargo 30 to collapse. In addition, small wheels 3 that can rotate freely
1 or wheels 31 in the trunk 32
There was a problem with the wheel rotating so that its width was in the same direction as the gap between the sills, causing the entire axle to fall down, but as mentioned above, the gap between the sills can be reduced to about 51, so the above problem does not occur at all. ．． As explained above, in the present invention, when the car comes near the landing floor, the rotating cam of the hoistway rotates the lever of the car, and the movement of this lever causes the auxiliary sill of the car floor to be moved through the link mechanism. Because the gap between the landing sill and the car sill can be reduced by moving the cart forward, the wheels of the trolley do not fall into the gap when loading and unloading items from the car, and even carts with small diameter wheels can be transported smoothly. ．． In this embodiment, a set of levers with rollers facing a fixed cam provided in the hoistway are arranged on one side of the car, and the movement of the levers is directed to the opposite side by a rotating shaft extending in the direction of the frontage under the floor of the car. By transmitting the signal to the lever of the car, both levers are rotated simultaneously, and the auxiliary sill is advanced simultaneously from both sides via a link mechanism.In addition, the fixed cam of the hoistway and the lever with opposing rollers are Place one set on each side, do not connect each lever,
The structure may be such that the movement of each lever moves the auxiliary sill forward from both sides via a link mechanism.

In this embodiment, the auxiliary sill device is built into the car, but in principle it can also be built into the landing side. In that case, contrary to this embodiment, it is also possible to provide a cam on the car and use the movement of the car to move the auxiliary sill on the landing side forward and backward. [Effects of the Invention] According to the present invention, a fixed cam provided in the hoistway, a lever provided on the car side that contacts the fixed cam, and a rotational displacement when the lever contacts the fixed cam are converted into reciprocating displacement. A link mechanism, an auxiliary sill having an end surface that engages with the link mechanism and forms an extension of the floor of the car, and a guide that causes the auxiliary sill to move obliquely close to the entrance/exit side of the floor of the car. This allows the end face of the auxiliary sill to be on the same level as the car floor and to form an extension of the car floor, so it is possible to close the gap between the landing floor and the car floor with a simple mechanism and without consuming power. By making it smaller, it has the effect of reducing the shock to the transport vehicle when using the elevator.

[Brief explanation of drawings]

Fig. 1 is an overall plan view of an elevator equipped with an entrance/exit sill device of the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1 showing the overall structure of the entrance/exit sill of the present invention, and Fig. 3 is a side view. Figure 1 is a sectional view taken along line B-B in Figure 1, Figure 4 is also a side view, and Figure 4 is a cross-sectional view taken along line CC in Figure 1, and Figure 5 is a plan view of the link plate section taken along line D-- in Figure 3.
D sectional view, Figure 6 is the 3rd section showing the state in which the auxiliary sill is advanced.
7 and 8, which are side views corresponding to the figures, are diagrams showing a state in which cargo is transported in a normal elevator to which the doorway sill of the present invention is not applied. 1... Hoistway, 2... Car, 12... Fixed cam,
14... Roller, 15... Lever ] 8... Rotating shaft, 21... Lever, 24... Link plate, 2
5... Threshold guide, 26... Auxiliary threshold. 15th'. z≦1/ノ "1st 15: l-y/" - 18: Drinking j1 20: #! 25:2 ``gun'' 26:A also cIr 21'. l-//" 26: Lumps V bite! Melting r Fig. 6 15: lノ7'' - 24: Nshi 2 no 0z - 25:, η... 26:〃〃 Fig. 7 6.〃 9.P S゜′ Luta: Δ114-h wheel 30°4＾V

Claims (1)

[Scope of Claims] 1. A fixed cam provided on either side of the entrance/exit door of the hoistway, a lever with one end abutting the fixed cam and pivotally supported under the car floor on the side of the entrance/exit; a link plate whose end is engaged with the other end of the lever by a link mechanism; and a car floor, which is plate-shaped and whose end on the lower side of the car floor is engaged with the other end of the link plate by a link mechanism. The car is characterized by having an auxiliary sill whose surface side end has a flat end face similar to the floor surface of the car, and a guide that causes the auxiliary sill to move obliquely close to the entrance/exit side of the floor surface of the car. Elevator entrance/exit threshold device. 2. The elevator according to claim 1, wherein the fixed cam, the lever, and the link plate are provided on both sides of the car, and are engaged with an end of the auxiliary sill on the lower side of the car floor by a link mechanism. Doorway threshold device. 3. A fixed cam provided on either side of the entrance/exit door of the hoistway, and a lever whose one end abuts the fixed cam, extends in the frontage direction, and is connected to a rotating shaft supported under the floor of the car. ,
a first link plate whose one end is engaged with the other end of the lever by a link mechanism; a second link plate which is engaged with the rotating shaft by a link mechanism; and an end on the underside of the car floor. and the auxiliary sill engaged with the other end of the first and second link plates by a link mechanism.