JPS6223713B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an elevator door mechanism that can be opened and closed in the horizontal direction with the side surface of the door serving as the axis of rotation.

[Conventional technology]

Conventionally, elevator doors have often been configured to open and close by moving horizontally from side to side. Although this configuration allows the opening of the entrance/exit to be enlarged,
On the other hand, it requires space on the left and right sides to accommodate the door that moves when the door is opened. By the way, this space is unnecessary when the door is closed, and is a considerable burden in small-scale buildings.

For this reason, we have proposed a swing door for elevators in which the engaging piece of the inner door engages with the outer door as the elevator goes up and down, and when the outer door is pulled, the inner door opens and closes in conjunction with the outer door through the engagement of this engaging piece. has been done.
(Utility Model Publication No. 50-81517).

[Problem that the invention seeks to solve]

However, this technology requires a hinge for the inner and outer doors to rotate in the same direction, which limits the degree of freedom of movement of the inner door and poses the problem that the inner door cannot be easily replaced. .

In view of the above-mentioned drawbacks, the present invention connects the inner door removably to the outer door using a direct connection mechanism so that when the outer door is opened and closed horizontally, the inner door is also opened and closed at the same time. To provide a door mechanism for an elevator, which can operate the door at the same time as the inner door, and also allows easy replacement of the inner door.

[Means for solving problems]

The present invention provides a box body that is moved up and down by a link mechanism, an inner door that removably engages with an L-shaped angle protruding from the lower part of the opening of the box body, and an inner door that is provided at a position close to the link mechanism. an outer door that opens and closes horizontally with a hinge provided on one side;
It is fixed to the outer door, and the inner door is lifted by holding the holding piece provided on the front of the inner door, and the inner door is removed and held by the L-shaped angle, and the inner door is linked to the opening and closing of the outer door. It is characterized by comprising a connection mechanism.

[Effect]

The inner door is locked to an L-shaped angle projecting from the opening of the box body.

When opening and closing the door, a holding piece provided on the front surface of the inner door is held by a connecting mechanism fixed to the outer door. At the same time as this holding piece is held, the inner door is lifted up and released from the angle. This connects the inner door to the outer door and interlocks with the opening and closing of the outer door.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, an elevator that can raise and lower a box containing personnel and materials using an X-shaped link mechanism will be described. First, Figure 1 is a transparent view of the elevating mechanism. 1 is a support stand installed on a foundation such as a foundation, and the top surface of the support stand 1 is provided with a pantograph type link mechanism 2. This pantograph type link mechanism An elevator platform 3 is connected to the upper end of the platform 2. A box 4 having a three-dimensional shape with only the front side open is placed on the top surface of the lifting platform 3, and the box 4 can store personnel, materials, etc. and be raised or lowered.

The pantograph link mechanism 2 includes a pair of link levers 5 rotatably pivoted at their centers in an X-shape, as a set of elements.
A set of link levers 5 is arranged parallel to each other with intervals left and right, and a plurality of link levers are stacked vertically, and the tip of each link lever 5 is connected to the tip of the upper and lower link levers 5 by a connecting rod. (In this embodiment, three sets of elements of the link lever 5 are stacked on each side on the left and right.) The link levers 5, which are stacked on the left and right, are connected by a connecting rod 6. has been done. One end of each of the lowest and highest link levers 5 is connected to the support 1 and the lifting platform 3 by a pin 7, and a roller 8 is pivotally supported at the other end of the lowest link lever 5. This roller 8 is engaged with a rail 9 provided on the support base 1. A sliding shaft 10 is fixed horizontally to the lower surface of the lifting platform 3, and a sliding body 11 is slidably inserted into this sliding shaft 10.
1 and the other end of the highest link lever 5 are pins 12
They are connected by. Further, a drive device 13 operated by hydraulic pressure is disposed between the lowest and middle link levers 5.

On the front of this pantograph type link mechanism 2,
A pair of columns 14 are provided vertically and parallel to each other with an interval equal to the length of the support table 1, and the columns 14 are spaced apart from each other so that they do not come into contact with the front edge of the lifting table 3. An outer door 15 is connected to the support column 14 by a hinge on one side and is supported so as to be able to open and close in the horizontal direction, and a knob 16 is fixed to the outer door 15. (This outer door 15 may be installed on the first floor or second floor, for example.
(In this example, the outer door 15 is provided only on the second floor.) Figures 2 to 4 show the relationship between the outer door 15 and the inner door. This will be explained in detail, and the outer door 15 and the inner door are each illustrated with their frames for easy viewing.
In reality, a thin steel plate is attached to this frame.
The connection mechanism provided between the outer door 15 and the inner door cannot be seen from the outside. A flat inner door 17 is provided at the front opening of the box body 4,
This inner door 17 is locked at its lower side by an L-shaped angle 18 protruding from the bottom of the box body 4.
An electronic lock 19 that can be freely engaged with the box 4 is provided at the center of the left and right sides of the inner door 1. This angle 18 and the electronic lock 19 allow the inner door 17 to lock into the box 4.
is maintained. On the front surface of the inner door 17, holding pieces 20 having pieces projecting downward are fixed to the left, right, upper and lower corners, respectively.

A middle frame 21 is provided inside the outer door 15 for reinforcement.
and a lower frame 22 are provided horizontally at intervals, and bearings 23 and 24 are fixed to the center of each middle frame 21 and lower frame 22, and rotors 25 and 22 are fixed to the bearings 23 and 24, respectively.
26 are rotatably supported, and each rotor 25,
26 are connected by a rod 27 so as to be driven at the same rotation angle. The arm 28 is attached to the rotor 25.
is fixed, and a hydraulic cylinder 3 is installed between this arm 28 and a fixture 29 fixed to one end of the middle frame 21.
0, and a spring 31 is interposed between the arm 28 and the other end of the middle frame 21. Inside this outer door 15, lever bearings 32 and 33 are fixed slightly above the middle frame 21 and the lower frame 22, respectively.
5 is pivotally supported, and rollers 37, 38 having grooves formed in the center are pivotally supported at the upper ends of each lever 34, 35, and furthermore, the lower ends of each lever 34, 35 and rotors 25, 26 are connected to each other by a rod. They are connected by 39 and 40.

Next, the operation of this embodiment will be explained.

Personnel or materials are placed inside the box 4, and can be raised or lowered by a control device (not shown) to move personnel from the first floor to the second floor, or from the second floor to the first floor. first. To explain the vertical movement of the box body 4 due to the operation of the pantograph type link mechanism 2, when the box body 4 is located at the up/down position (first floor), the pantograph type link mechanism 2 is folded, and each link lever 5 moves up and down. is polymerized into In order to raise the lifting platform 3 and the box body 4, the hydraulic device is activated to supply hydraulic pressure to the drive device 13 to extend the hydraulic cylinder in the drive device 13, thereby causing each connecting rod 6 to move upward. Open each link lever. For this reason, the pantograph type link mechanism 2 is expanded in the vertical direction, and the lifting platform 3 and the box body 4 are expanded.
rises and moves from the first floor to the second floor. When lowering the box 4, the hydraulic pressure supplied to the drive device 13 is reduced, and the box 4 moves from the second floor to the first floor under its own weight.

Next, when the box 4 is located at a fixed position on the first floor or the second floor and the outer door 15 and the inner door 17 are to be opened, the operation of the drive device 13 is stopped (the limiter mechanism allows the box 4 and the inner door to be opened). (The door 17 always stops at a position facing the outer door 15), and hydraulic pressure is applied to the hydraulic cylinder 30.
Therefore, the hydraulic cylinder 30 is extended and the arm 2
The rotor 25 is rotated via the rod 8, and the rotor 26 is also rotated by the rod 27. The rotors 25 and 26 rotate at the same rotation angle, and the rotation of the rotors 25 and 26 causes the levers 34 and 35 to rotate around the lever bearings 32 and 33 via the rods 39 and 40, and the rollers 37 and 38 are engaged with the holding pieces 20, respectively. At this time, an electric current is flowing through the electronic lock 19 for unlocking, and the inner door 17 and the box body 4 are connected to each other.
is separated from. The aforementioned rollers 37, 38
When the arms 34 and 35 engage with the holding piece 20,
The holding piece 20 and the inner door 17 are slightly raised due to the angle of inclination of
The angle 18 and the inner door 17 are not in contact with each other. When in this state,
When the knob 16 is turned to unlock and the outer door 15 is pulled out, the outer door 15 rotates horizontally by a hinge provided on its side, and the inner door 17 is hooked onto the outer door 15. In this state, the inner door 17 is also pulled forward following the outer door 15, and the front of the box body 4 is opened, allowing people to get on and off. Outer door 15, inner door 1
7 can be closed by performing the procedure in reverse to the above, and the front of the box body 4 is closed by the inner door 17.
At the same time, the engagement between the holding piece 20 and the rollers 37, 38 is released, and the box body 4 can freely move up and down.

〔Effect of the invention〕

Since the present invention is configured as described above, the inner door and the outer door can be rotated at the same time when rotating the elevator door in the horizontal direction, and the space that normally occurs for the door can be omitted. .

Also, since the inner door does not need hinges,
Its replacement is simple and easy, and the effect is that the degree of freedom is increased.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the elevating and lowering functions of an elevator that is an embodiment of the present invention, Figure 2 is a front view showing the door mechanism, Figure 3 is a plan view of the same, and Figure 4 is a side view of the same. be. 2... Pantograph type link mechanism, 4... Box body, 1
5...Outer door, 17...Inner door.

Claims (1)

[Claims] 1 A box body that is moved up and down by a link mechanism, an inner door that removably engages with an L-shaped angle protruding from the lower part of the opening of this box body, and one of which is provided in a position close to the link mechanism. The outer door opens and closes horizontally with a hinge provided on the side, and the inner door is lifted by holding a holding piece fixed to the outer door and provided on the front of the inner door, and the inner door is opened and closed from the L-shaped angle above. An elevator door mechanism characterized by comprising a coupling mechanism for removing and holding a door and interlocking an inner door with opening and closing of an outer door.