JP2005336712A - Sealing door and its supporting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an sealing door demonstrating good sealing efficiency and having good operability by elastically a deforming sealing member in optimum without actuating so big force in the case of opening and closing, and its supporting device. <P>SOLUTION: The sealing door opening and closing an opening section by bringing it into contact with a frame body 1 provided to the peripheral section of the opening section is equipped with a door body 2 having an outline corresponding to the frame body and a supporting mechanism 3 supporting the door body in a rotatable manner, and the supporting mechanism comprises a bearing section provided in parallel with one side of the frame body, the first shaft 12 provided to the bearing section in a rotatable manner and the second shaft 13 eccentric to the first shaft. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is a door used for watertightly closing an opening provided in a pump chamber or the like, or for closing an opening provided in an airtight chamber for the purpose of deodorization or the like ( This will be collectively referred to as a sealed door hereinafter) and its supporting device.

As a conventional example of the above-described sealed door, one described in Patent Document 1 below is known.
The hermetic door has a high strength so as to obtain a desired water tightness and withstand the internal water pressure, and the weight increases accordingly. Therefore, a large force is required for the opening / closing operation.
In addition, this type of hermetic door is intended to obtain hermeticity by closely contacting a frame provided so as to frame the opening. In general, a seal member made of an elastic material such as rubber is interposed between the contact portions.
JP-A-7-279550

  In order to reliably perform the sealing with the sealing material, it is necessary to elastically deform the sealing material by a predetermined amount so as to be brought into close contact with a joint surface (hereinafter referred to as a sealing surface) between the frame body and the sealing door. That is, it is necessary to obtain a high degree of sealing performance by elastically deforming the sealing material according to the required sealing performance and bringing it into close contact with the sealing surface by its elastic force.

  However, in the above-described sealed door of Patent Document 1, to apply a force to press the sealed door against the frame and deform the sealing material over the front surface, the handle is operated and locked in a closed state with a scissors. A lot of effort is required.

  The present invention has been made in view of the above problems, and can optimally elastically deform the sealing material without exerting a great force at the time of opening and closing, exhibit a good sealing property, and has a good operability. An object is to provide a hermetic door and a support device for the same.

  The hermetic door of the present invention is a hermetic door that opens and closes the opening by contacting a frame provided at the periphery of the opening, and the door main body has an outline corresponding to the frame, and the door A support mechanism for rotatably supporting the main body, and the support mechanism is provided with a bearing portion having a rotation center parallel to one side of the frame body, and the bearing portion is rotatable. And a second axis that is eccentric with respect to the first axis.

Further, the sealing door according to the present invention is a lock mechanism provided between another side parallel to the side where the bearing portion is provided in the door body and another side parallel to the one side in the frame body. The lock mechanism includes a handle that is rotatably supported along the surface of the door main body, and a lock piece provided on the frame, and the handle and the lock piece. Are in contact with each other via a tapered surface inclined with respect to the surface of the door body, and the tapered surface is converted into a force for pressing the door body against the frame body by a force in a rotation direction of the handle. And
The lock piece is supported so as to be rotatable along the surface of the frame.
According to the present invention, in the support device for the hermetic door, a bearing portion provided in parallel with one side of the frame body, a first shaft rotatably provided on the bearing portion, and the first shaft And a second shaft provided so as to be rotatable with respect to the shaft.

The door body is opened and closed by a pivoting operation around the support mechanism. At the time of closing in the opening and closing, since the first shaft and the second shaft are eccentrically provided at the final stage, the hermetic door is moved by the differential movement between the first shaft and the second shaft. Can slightly escape from the frame near the center of rotation, and the elastic deformation of the sealing material near the center of rotation can be minimized as compared with the case where there is no escape. Further, the tapered surface slides by the operation of the handle. As a result, the rotational force of the handle operation can be converted into the pressing force of the door body by the wedge effect of the tapered surface, and the door body can be pressed against the frame.
Therefore, the sealing door can be operated with a small operating force by devising both the support mechanism and the handle, and the opening / closing operability can be improved.

Hereinafter, an embodiment of the present invention will be described.
Reference numeral 1 in FIG. 1 denotes a frame body, which is provided by bordering an opening of a space having a sealed structure such as a pump chamber. The frame body 1 is opened and closed by a door body 2, and the door body 2 is supported at two locations by a support mechanism 3. That is, the door body 2 is supported so as to be rotatable about an axis along one side (right side in FIG. 1) of the frame 1. Further, two lock mechanisms 4 are provided along another side parallel to the one side of the frame body 1, and the door body 2 is fixed in a closed state by the lock mechanism 4. ing.

  As shown in FIGS. 2 and 3, the support mechanism 3 has an attachment portion 10 attached to the frame 1, and a shaft 12 is rotatably supported by a thrust bearing 11 on the attachment portion 10. An eccentric shaft 13 is integrally provided on the upper portion of the shaft 12, and the base end portion of the arm 14 is rotatably supported by the shaft 13. The tip of the arm 14 is fixed to the door body 2 via the mounting plate 15. In FIG. 2, reference numeral 16 denotes a sealing material formed of an elastic body such as rubber. The sealing material 16 has a hollow cross section as shown in the figure. The sealing material 16 is provided on the entire contact portion with the frame body 1 around the door body 2. In the embodiment, the water pressure is applied from the bottom to the top in FIG.

  As shown in FIG. 4, the lock mechanism 4 has a handle 21 that is supported so as to be rotatable about an axis 20 perpendicular to the door body 2. The handle 21 is connected to the shaft 20 by a key 22 and rotates integrally. A tip of the handle 21 is an engaging portion 23 having a semicircular arc shape as shown in FIGS. 6 and 7. On the other hand, a lock piece 24 that engages with the engaging portion 23 is provided on the frame 1 side.

  As shown in FIG. 9, the lock piece 24 has a wedge-like cross-sectional shape as a whole, and is fixed to the frame body 1 by inserting a mounting bolt 26 through a through-hole 25 provided in the upper portion thereof. . In the case of the embodiment, by setting the outer diameter of the mounting bolt 26 to a positive dimensional tolerance with respect to the inner diameter of the through hole 25, the lock piece 24 can be rotated around the through hole 25. Yes. That is, in this embodiment, since the lock piece 24 is rotatably supported by the mounting bolt 26, the vertical position is usually taken by the action of gravity.

  One surface of the engaging portion 23 and one surface of the lock piece 24 are both tapered to form tapered surfaces 27 and 28 (see FIGS. 7 and 9). Reference numeral 29 denotes a stopper that supports the handle 21 in a vertical posture.

The operation of the sealed door configured as described above will be described.
Since the door body 2 is supported by the support mechanism 3, it is possible to open and close the opening edged by the frame body 1. The door main body 2 rotates counterclockwise in FIG. 2 while rotating around at least one of the shafts 12 and 13 during the operation in the direction of closing the opening. Note that which of the shafts 12 and 13 is the main rotation depends on the direction of the force applied to the door body 2, the difference in frictional resistance between the shafts 12 and 13, and the like. At this time, the handle 21 is fixed by a stopper 29 in the vertical orientation shown in FIG.

  When the door body 2 is rotated to the almost fully closed state as shown in FIG. 2, the handle 29 is rotated counterclockwise in FIG. 4, and the engagement portion 23 and the tapered surfaces 27 and 28 of the lock piece 24 are brought into contact with each other. Further, when sliding along the taper surface, a force that further rotates the door main body 2 counterclockwise in FIG. 2 acts and elastically deforms the sealing material 16, while the door main body 2 is applied to the frame body 1. Go in close contact.

  At this time, a reaction force is applied to the door body 2 from the sealing material 16 due to the elastic deformation, and the distance between the frame body 1 and the door body 2 is extremely small particularly on the side close to the shaft 12. The shaft 13 rotates about the shaft 12 in the clockwise direction of FIG. As a result, the door body 2 can move in a direction slightly away from the frame 1, and the reaction force accompanying the compression of the sealing material 16 is alleviated.

  When the door body 1 is closed until the door body 2 further rotates and the sealing material 16 contacts the entire frame 1, the handle 21 is rotated counterclockwise in FIG. The joint portion 23 is engaged with the lock piece 24. At this time, while the engaging portion 23 and the taper surfaces 27 and 28 of the lock piece 24 are in contact with each other, the door body 2 is drawn to the frame body 1 and the sealing material 16 is further deformed and brought into close contact. When the engagement piece 23 and the lock piece 24 are engaged with each other, the lock piece 24 rotates around the mounting bolt 26 so that the angle between the taper surface 27 of the engagement piece 23 and the taper surface 28 of the lock piece 24. The difference between the two can be absorbed and brought into close contact with each other.

  In the illustrated case, as shown in FIG. 4, the door body 2 can be pressed against the frame body 1 and closed in a sealed state by pushing the honorifical right side 23 toward the lock piece 24 until the handle 21 is substantially horizontal. .

  On the other hand, when the door body 2 is opened, the handle 21 is rotated clockwise in FIG. 4 to release the lock, and the handle 5 is pulled. Further, the handle 21 is fixed by a stopper 29 in the vertical state in FIG. Further, since the lock piece 24 rotates around the mounting bolt 26 and returns to a substantially vertical state, the lock piece 24 can return to a position where the engagement piece 23 can be received in the next lock operation. In addition, as shown in FIG. 8, the stopper 30 is protruded on both sides of the lock piece 24 to restrict the lock piece 24 from moving to an unexpected range, so that the engagement piece 23 cannot be received. It will never be.

In the embodiment described above, both the support mechanism and the lock mechanism are provided in two places, but the number of these is not limited to the embodiment.
Moreover, you may change suitably the specific shape of a handle | steering-wheel, an engaging part, and a lock piece, unless the essential function is impaired.

The front view of one Embodiment. II-II arrow directional view of FIG. The front view to which the area | region shown in FIG. 2 was expanded. The enlarged view of the area | region of IV of FIG. The V-V line arrow directional view of FIG. The enlarged plan view of the principal part of the handle | steering-wheel of FIG. The front view of the part of FIG. The enlarged front view of the lock piece of FIG. The longitudinal cross-sectional view of the part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 2 Door main body 3 Support mechanism 4 Lock mechanism 11 Thrust bearing 12 Axis 13 Axis 20 Axis 21 Handle 22 Engagement part 23 Engagement part 24 Lock piece 25 Through-hole 26 Mounting bolt 27 Tapered surface 28 Tapered surface

Claims (4)

A hermetic door that opens and closes the opening by contacting a frame provided in the periphery of the opening;
A door body having an outline corresponding to the frame body, and a support mechanism for rotatably supporting the door body,
The support mechanism includes a bearing portion provided with a rotation center parallel to one side of the frame body, a first shaft rotatably provided on the bearing portion, and the first shaft And a second door that is eccentric with respect to the sealing door. A lock mechanism is provided between the other side parallel to the side where the bearing portion is provided in the door body and the other side parallel to the one side in the frame,
The lock mechanism is composed of a handle that is rotatably supported along the surface of the door body, and a lock piece provided on the frame,
The handle and the lock piece come into contact with each other via a tapered surface inclined with respect to the surface of the door body, and the tapered surface presses the door body against the frame body by a force in a rotational direction of the handle. The sealed door according to claim 1, wherein the sealed door is converted into force. The hermetic door according to claim 2, wherein the lock piece is rotatably supported along the surface of the frame body. A sealing door that is provided on a sealing door that opens and closes the opening by contacting a frame provided at the periphery of the opening, and rotatably supports a door body having an outline corresponding to the frame. In the support device,
A bearing portion provided in parallel with one side of the frame, a first shaft rotatably provided on the bearing portion, and provided eccentrically and rotatable with respect to the first shaft. And a second supporting shaft.

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