JPH0425265Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a movable seal cover for a shaft protruding from a closed chamber of a cleaning device, shot blasting device, or the like.

[Conventional technology]

As shown in FIGS. 7 and 8, the closed chamber of the cleaning device has a movable seal cover 51 with a tapered upper part and a rosette structure attached to a conduit 53 to cover the window 52 of the closed chamber. section has been proposed. Since the movable seal cover 51 has its central upper end fixed to the middle of the conduit 53, the Z
Since the conduit 53 expands and contracts as it moves in the X, Y, and Z directions, the watertightness of the sealed chamber is maintained even if the conduit 53 moves in the X, Y, and Z directions.
Therefore, for example, an injection nozzle may be attached to the tip of the conduit 53, and the injection nozzle may be moved to a position facing the processing hole of the workpiece in the closed chamber to clean the processing hole.

[Problem that the invention attempts to solve]

However, since the movable seal cover 51 is required to be flexible, it is generally made of rubber or leather. For this reason, it may be damaged or deteriorated by high-pressure cleaning fluids or shot blasting equipment, and its lifespan is short. Further, since the seal cover 51 is bulky due to the large amount of protrusion in the Z direction, and also moves in the X, Y, and Z directions, various devices cannot be disposed around it. Furthermore, since the movable seal cover 51 is fixed to the conduit 53, it has the disadvantage of restricting the amount of movement of the conduit 53 in the Z direction, and also, when the conduit 53 descends, the movable seal cover 51 may be damaged by internal equipment hanging down into the room. There was a danger that

On the other hand, the cover is not bulky and does not easily break or deteriorate, and the operating lever is inserted through the cover body (Utility Model Application No. 59-157932, Utility Model Application No. 59).
-143828) is proposed. however,
All of these devices have a configuration in which the operating lever can only be operated in one direction. In addition, not only is watertightness not achieved between the operating lever and the cover;
Since the operating lever and at least one cover collide each time the operating lever is operated, damage to the operating lever and the cover caused by this makes it difficult to ensure watertightness of the sealed chamber.

The present invention was developed in view of the above points, and the shaft can be moved in
To provide a movable seal cover that can be freely moved in any direction.

[Means for solving problems]

In order to achieve this purpose, the movable seal cover of the present invention has an upward folded protrusion formed on the outer periphery of a plate having a hole, or a downward folded protrusion formed around the hole of the plate. A plurality of covers of approximately similar shapes are stacked in order from the largest one, the hole of the smallest cover is used as a shaft insertion hole, and the shaft is moved in the axial direction between the shaft inserted into this shaft insertion hole and the smallest cover. A watertight mechanism has been installed to enable this, and the covers other than the smallest cover can be moved using the folded protrusion of the cover that directly overlaps them, and the hole is sized so that it is always closed by the upper cover. This is a characteristic feature.

[Effect]

The covers 3a, 3b, 3c, and 3d of the movable seal cover attached to the window part 5 do not substantially bend in the Z direction due to their rigidity, so they do not come into contact with indoor equipment. Cover 3a, 3b, 3
c and 3d are in contact with each other due to their own weight, and the holes 12a, 12b, and 12c are always closed by the upper cover regardless of whether or not the shaft 11 moves. Since the watertight mechanism 8 that allows the shaft 11 to move in the Z direction is installed in the shaft 11, the X, Y,
The watertightness of the sealed chamber is ensured regardless of movement in the Z direction.

When the shaft 11 moves in the X and Y directions, the smallest cover 4d also moves together with the shaft 11, and when the folding protrusion 2d comes into contact with the folding protrusion 2c of the cover 3c and moves, the cover 3c also moves in the direction of shaft movement, and the folding When the projection 2c comes into contact with the folded projection 2b of the cover 3b and moves, the cover 3b also moves in the same direction. The folding projection 2b of the cover 3b is attached to the locking projection 2a of the cover 3a attached to the window portion 5.
When it comes into contact with, for example, the state shown in FIG. 3, the movement in the direction of contact stops. That is, the shaft 11 can move in any direction in the XY directions within the range where the folding projection 2b of the cover 3b does not come into contact with the locking projection 2a of the cover 3a. On the other hand, since the shaft 11 fitted into the watertight mechanism 8 is movable in the Z direction, the required amount of movement of the shaft 11 in the axial direction (Z direction) is not limited.

Furthermore, since the shaft 11 can move in the XY directions without directly coming into contact with the cover, it is not damaged by the cover.

〔Example〕

Embodiments of the present invention will be described based on the drawings. In Fig. 1 and Fig. 2, square iron plates 1a, 1b,
Upward folding protrusions 2a on the outer peripheral edges of 1c and 1d,
Stack the covers 3a, 3b, 3c, and 3d of substantially similar shapes forming the a, 2b, 2c, and 2d in descending order, and attach the largest cover 3a to the window 5 of the mounting member 4, and attach the largest cover 3a to the window 5 of the mounting member 4, and An O-ring mounting part 6 is provided at the shaft insertion point to protrude upward,
The shaft 11 is inserted into the O-ring 7 attached to the O-ring attachment part 6 so as to be movable in the axial direction. The other covers 3a, 3b, 3c have their folded protrusions 2a,
Covers 3b, 3c, with 2b, 2c moving on the upper surface;
The hole portions 12a, 12b, 12 are moved by contacting and being pushed by the folding protrusions 2b, 2c, 2d of 3d.
c, but these holes 12a, 12b, 1
2c is selected to have a size that allows it to be always closed with the upper cover.

Although the covers 3a, 3b, 3c, and 3d are square in this embodiment, they may be round or any other suitable shape. Folded protrusions 2a, 2b, 2c,
2d can be directed downward as shown in FIG. In this case, the holes 12a, 12b, 12c are formed by folded protrusions 2a, 2b, 2c, and the cover 3
The folded projection 2d of d corresponds to the bearing portion of the shaft 11. As a watertight mechanism 8 interposed between the shaft 11 and the cover 3d, instead of the O-ring 7, a bearing part 9 protruding from the upper surface of the cover 3d as shown in FIG. The watertightness of the shaft 9 may be ensured by the watertight material 13. In addition, if the required amount of movement of the shaft 11 in the Z direction is about 70 to 80 cm, as shown in FIG. It may also be used by being attached to the top surface of the cover 3d. Furthermore, a pipe or the like can be used for the shaft 11, and the cross section is not limited to a circular or cylindrical shape.

[Effect of idea]

As is clear from the above description, according to the present invention, a plurality of covers of substantially similar shapes each having folded protrusions formed around the plate body are stacked in order from the largest one,
A watertight mechanism that allows the shaft to move in the axial direction is interposed between the shaft inserted into the smallest cover and the smallest cover, and covers other than the smallest cover can be moved by the folded protrusion of the cover that directly overlaps it. In addition to forming a hole like this, the hole is sized so that it can always be closed with the upper cover.
The shaft is
It can be freely moved in the Y and Z directions. Moreover, since the shaft does not come into contact with the cover during operation, the watertightness of the sealed chamber will not be compromised due to damage to the shaft.

[Brief explanation of drawings]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a vertical sectional view thereof, Fig. 3 is a plan view showing a state in which the shaft is moved to one corner as much as possible, and Fig. 4 is another embodiment of the present invention. A partially cutaway sectional view of the example, FIGS. 5 and 6 are sectional views of the sealing mechanism provided at the shaft penetration point of the cover, FIG. 7 is a plan view of the conventional product, and FIG. 8 is a longitudinal sectional view of the same. be. 1a, 1b, 1c, 1d...plate (square iron plate),
2a, 2b, 2c, 2d... folded protrusion, 3a,
3b, 3c, 3d...cover, 8...watertight mechanism,
11...shaft, 12a, 12b, 12c, 1
2d... Hole.

Claims (1)

[Scope of utility model registration request] A plurality of covers of substantially similar shapes are stacked in order from the largest to the smallest, with an upward folding protrusion formed around the outer periphery of a plate having a hole, or a downward folding protrusion formed around the hole of the plate. The hole is defined as a shaft insertion hole, and a watertight mechanism that allows the shaft to move in the axial direction is interposed between the shaft inserted into this shaft insertion hole and the smallest cover, and covers other than the smallest cover are The movable seal cover is movable by means of a folding protrusion of the cover that directly overlaps the cover, and the hole is sized to be always closed by the upper cover.