JPS599997Y2 - Opening/closing drive device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of an opening/closing drive device for a hatch power bar or door of a ship.

A large amount of power is required to open and close heavy structures such as hatch force bars, and as a result, the drive device inevitably becomes larger, but there is a strong demand for the device to be more compact in terms of installation space.

The present invention was proposed in order to satisfy these demands, and its objective is to provide an opening/closing drive device that is compact, inexpensive, and has a practical opening/closing speed.

Examples will be described below based on the drawings.

This example shows an example of application when opening and closing a hatch.
In the figures to FIG. 3, la and lb are the door bodies,
Brackets 2a are attached to each other on both sides of the bent part (connection part).
, 2'a and 2b, 2'b are combined, and these brackets}2
a and 2b are one end 3a of the support shaft 3;
'a and 2b are rotatably connected at the other end 3b of the support shaft 3, so that the door bodies 1a and 1b rotate around the support shaft 3.

One end of a link 4a, 4b is pivotally supported at the other end of the bracket 2a, 2b, and the link 4a, 4b has the same length.
The other ends are connected to each other at one end 5a of the support shaft 5.

Links 4'a and 4'b are connected to the brackets l-2'a and 2'b at the other end 5b of the support shaft 5 in exactly the same manner.

In this case, due to space considerations, the bracket l-21 is sandwiched between two brackets 2b, and the link 4b is also sandwiched between these two brackets 2b, as shown in Figure 1. 2a and 2 links 4
b is sandwiched between the two links 4b, and the other link 4b is sandwiched at the other end of the two links 4b.

Brackets on the other side}2'a, 2'b and links 4'a, 4
The same applies to b.

As is clear from FIG. 2, a cylinder 6 is disposed between and parallel to the support shafts 3 and 5, and the base end 7 of the cylinder 6 has a base end. Two links 9a and 9b are connected via pins 8, and the open ends are connected to pins 10a near ends 3a and 5a of support shafts 3 and 5, respectively.
, 10 b, and in the same way, cylinder 6
2 simultaneously connected to the actuating rod 11 of the
Two links 13a and 13b are connected to pins 10'a and 10' near the ends 3b and 5b of the support shafts 3 and 5, respectively.
Connect via b.

Note that the links 9a, 9b and the links 13a, 13b are shaped symmetrically to each other.

Therefore, as the cylinder 6 expands and contracts, both ends of the links 9a, 9b and 13a, 13b open and close using the pins 8 and 12 as fulcrums, respectively, causing the support shafts 3 and 5 to move in parallel.

The system is structured as described above, and its operation will be explained next.

The previous operating state is shown in FIGS. 4-3. In this example, one end of the door body 1b is pin-coupled to a bracket 15, and one end of the door body 1a is guided on a guide rail 16.

When the cylinder 6 is in the contracted state,
As shown in the figure, links 9a, 9b and 13 at both ends thereof
When the connecting intersection angle with a and 13 b is at its minimum, the distance between the support shafts 3 and 5 is accordingly small, and when viewed from the side,
The door bodies 1a and 1b are located on the same plane.

In this state, the hatch or door is fully closed.

Next, when the cylinder 6 begins to expand as shown in FIG. 4 II, the links 9a, 9b and 13a, 13b (7)
Since the movement of the support shafts 3 and 5 in the axial direction is restricted at the other end, the link intersection angle gradually widens around the pins 8 and 12, and the distance between the support shafts 3 and 5 is expanded in parallel.

As a result, the bracket 2a connected to the door bodies 1a and 1b
, 2b, 2'a, 2'b and the links 4a and 4b, 4'a, 4'b that connect these move symmetrically with respect to the line connecting the support shafts 3 and 5, and the door body The intersection angle between 1a and 1b gradually decreases, that is, it moves on the guide rail 16 and is folded.

Furthermore, as shown in FIG. 4 III, when the cylinder 6 is fully extended, the distance between the support shafts 3 and 5 becomes maximum, and accordingly, the brackets }2a, 2b, 2'a, 2'b The diamond shape formed by the links 4a, 4b, 4'a, and 4'b is the most vertically elongated, and the door bodies 1a, 1b are in a completely folded state.

In this way, as the cylinder 6 expands, the door body 1a,
It is easy to understand that the cylinder 6 is to be fully opened (folded and opened), and conversely, to close it, the cylinder 6 should be contracted.

As described above, according to the present invention, a cylinder is arranged parallel to the center of rotation of the door bodies 1a, 1b, and the bracket and link deform this movement into a substantially diamond shape as the cylinder expands and contracts in the axial direction. Since the drive unit is configured to transmit data, the space for arranging the driving part is very small on the back side of the folded part of the door body, and the structure is extremely simple, which has the advantage of being able to be manufactured at low cost.

In the above embodiment, the opening/closing of a hatch power bar (door) of a ship is illustrated, but it is not limited to this, and it goes without saying that it can be freely used for opening/closing parts of factories, warehouses, and other mainly folding type opening/closing parts. Nor.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the present invention, FIG. 2 is a front view, FIG. 3 is a side view, and FIGS. 4 I, II, and III are illustrations of the operating state. la, lb...door body, 2a, 2b...bracket, 3...support shaft, 4a, 4b...link, 5...
Support shaft, 6... cylinder, 9a, 9b... link,
11... Operating rod, 13a, 13b... Link.

Claims (1)

[Scope of utility model registration request] At least two pairs of brackets 2a and 2b are installed on both sides of the connecting parts of at least two door bodies, and these brackets 2a and 2b are coaxially rotatable at both ends of the first support shaft 3. On the other hand, the other ends of the first links 4a, 4b, whose base ends are pivotally supported on the respective brackets 2a, 2b, are coaxially attached to both ends of the second support shaft 5 parallel to the first support shaft 3. A cylinder 6 is arranged in parallel with the first and second support shafts 3 and 5 while being rotatably connected, and two sets of cylinders are arranged in a V-shape at the base end of the cylinder 6 and the actuating rod 11, respectively. The base ends of the second links 9a, 9b and the third links 13a, 13b are coaxially connected, and the open ends of the second links 9a, 9b are connected to the first and second support shafts 3. , 5, and the open ends of the third links 13a, 13b are similarly connected with pins near the other ends of the first and second support shafts 3, 5, respectively. Device.