JPH0541710Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a device for simultaneously opening and closing the upper and lower lids of an evacuation hatch.

(Prior Art) As a device of this type, one shown in FIG. 4 has been known in the past.

In this conventional device, an upper cover 3 and a lower cover 4 are attached to one side of a hatch body 2 flush with a floor 1 so as to be openable and closable, and a bell crank 5 is attached to an inner wall of the hatch body 2 so as to be rotatable. It is attached to. A link member 6 is attached to one end of the bell crank 5.
and a turnbuckle 7 are rotatably attached to the other end. The tip of the link member 6 is rotatably attached to the upper cover 3, and the other end of the turnbuckle 7 is rotatably attached to the lower cover 4.

Now, when one of the lids, for example, the upper lid 3, is rotated clockwise in the drawing from the fully open state shown in the figure, the bell crank 5 also rotates clockwise, and as the bell crank 5 rotates, the bell crank 5 also rotates clockwise. As the turnbuckle 7 is pulled upward, the lower lid 4 also rotates in the counterclockwise direction, which is the closing direction. Furthermore, when opening both lids from a closed state, the movements of the bell cranks 5 and the like are reversed to open both lids at the same time.

(Problems to be Solved by the Present Invention) In the conventional device as described above, the bell crank 5, the link member 6, and the turnbuckle 7 must be connected to each other, so if there is an error in their dimensions, You can't connect it. Even if they could be connected, they would not rotate smoothly, resulting in the problem that the upper cover 3 and lower cover 4 would not open or close.

The purpose of this invention is to provide a device that can absorb the error and operate normally even if there is some error in the dimensions of each member.

(Means for solving the problem) In order to achieve the above object, this invention has the following configuration.

That is, while the upper cover and the lower cover are rotatably provided at symmetrical positions on the hatch body, a first rotating piece that rotates in response to opening and closing of the upper cover is provided on the hatch body, and this first rotating piece An interlocking pin is provided on the hatch body, and a second rotating piece connected to the lower cover is provided on the hatch body, one end of the second rotating piece faces within the rotation locus of the interlocking pin, and the other When the end is connected to the lower lid, the upper lid is closed, and the first rotating piece is rotated, the interlocking pin pushes down one end of the second rotating piece to rotate the second rotating piece, The lower cover is configured to close as the second rotating piece rotates.

(Operation of the present invention) When the top cover is opened and closed as described above and the first rotating piece is rotated, the interlocking pin comes into contact with one end of the second rotating piece and pushes it down. . When one end of the second rotating piece is pushed down in this way, the lower lid connected to the other end is rotated and closed.

(Effects of the present invention) As described above, an interlocking pin is provided on the first rotating piece that rotates as the top cover is opened and closed, and one end of the second rotating piece is placed within the rotational trajectory of this interlocking pin. Therefore, there is no need to mechanically connect the first rotating piece and the second rotating piece. Therefore, even if there is some error in the dimensions of the two, the first rotating piece and the second rotating piece
The upper cover and the lower cover can be reliably opened and closed without affecting the linked operation of the rotating pieces.

(Embodiment of this invention) The embodiment of this invention shown in FIG.
An upper lid 11 and a lower lid 12 are rotatably provided. The upper lid 11 and the lower lid 12 are installed in symmetrical positions and are configured to open and close in opposite directions.

A first rotating piece 15 is provided on the side wall 13 of the hatch body a and is rotatable about a pin 14. A linking pin 16 is erected on the first rotating piece 15, and a link member 17 is rotatably connected to one end of the first rotating piece 15 by a connecting pin 18. This link member 17 has its tip connected to the upper lid 1.
It is rotatably connected to one bracket 19 by a connecting pin 20.

The first rotating piece 15 configured in this manner allows each of the pins 14, 18, and 20 to be positioned substantially in a straight line when the upper lid 11 is in the open position as shown. When the upper lid 11 is closed, the pin 18 portion rotates in the direction of the arrow 21.

Further, a second rotating piece 23 is rotatably attached to the side wall 13 of the hatch body a by a pin 22, and one end contact portion 23a of the second rotating piece 23 is connected to the interlocking pin 18. Although the contact portion 23a faces within the rotation locus, it has a step with respect to other portions. A link member 24 is connected to the connecting pin 2 at the other end of the second rotating piece 23, that is, the other end opposite to the contact portion 23a.
5, they are rotatably connected. The other end of the link member 24 is rotatably connected to the bracket 26 of the lower lid 12 by a connecting pin 27.

A stopper pin 28 is provided on the side wall 13 to prevent the second rotating piece 23 from further rotating clockwise from the illustrated position.

When the top cover 11 is closed from the illustrated state, the connecting pin 18 rotates in the direction of the arrow 21, and the first
The rotating piece 15 rotates clockwise around the pin 14. When the first rotating piece 15 rotates clockwise in this manner, the interlocking pin 16 also rotates about the pin 14 . Then, during the rotation process of the first rotating piece 23, the interlocking pin 16 is moved to the second rotating piece 23.
The contact portion 23a is pressed down, and the second rotating piece 23 is rotated counterclockwise about the pin 22. When the second rotating piece 23 rotates counterclockwise, the lower lid 12 is pulled up via the link member 24.

When the upper lid 11 is completely closed, the lower lid 12 is also completely closed.

Further, when the upper lid 11 is opened from the state where both lids 11 and 12 are closed as described above, the first rotating piece 15 rotates to reach the position shown in FIG. The second rotating piece 23 rotates clockwise due to its own weight to open the lower lid 12.

As described above, according to this embodiment, the two rotating pieces 15 and 23 are not mechanically connected, and the second rotating piece 23
The contact portion 23a of the first rotating piece 15 is connected to the interlocking pin 1 of the
Since the rotary pieces 15 and 23 are only positioned within the rotation locus of the rotary pieces 15 and 23, even if there is some dimensional error between the two rotary pieces 15 and 23, it will not affect their operation in any way.

Furthermore, since the number of connection points such as rotating pieces is reduced, the work of assembling them becomes easier.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing an embodiment of this invention;
FIG. 2 is a sectional view showing a conventional device. a...Hatch body, 11...Top lid, 12...Bottom cover, 15...First rotating piece, 16...Interlocking pin, 2
3...Second rotating piece.

Claims (1)

[Scope of utility model registration request] The hatch body is provided with an upper cover and a lower cover rotatably at symmetrical positions, and a first rotating piece that rotates in response to the opening and closing of the upper cover is provided on the hatch body, and a linking pin is provided on the first rotating piece.
A second rotating piece connected to the lower cover is provided on the hatch body, one end of this second rotating piece is located within the rotational trajectory of the interlocking pin and the other end is connected to the lower cover, and when the upper cover is closed and the first rotating piece is rotated, the interlocking pin pushes down one end of the second rotating piece to rotate the second rotating piece, and the lower cover closes as the second rotating piece rotates.This is a device for opening and closing an escape hatch.