JP6739789B2 - Glove replacement lid device - Google Patents

Description

The present invention relates to a lid device for exchanging gloves attached to a glove box.

The glove box is used for handling solids, powders, radioactive substances, extremely toxic substances that are unstable in the air, or substances that explode by reacting with oxygen in the air in a dry or inert atmosphere. To be In the glove box, the air inside the main body box, which divides the work space from the outside in an airtight manner, is replaced with dry air or an inert gas such as nitrogen, argon, or helium to form a dry atmosphere or an inert atmosphere inside the main body box. I am trying to do it. A work opening for people to put their hands inside the body box is formed on the front or front and back sides of the body box, and a tubular body for attaching gloves is provided so as to surround this work opening. Has been. The glove seals the open end of the tubular body by folding back the glove lip at the outer end of the tubular body and pressing the glove lip edge folded back by the O-ring to the outside of the tubular body. I am trying.

If the gloves attached to the glove box are broken or pinholes are opened during the work, external air flows into the main body box through the damaged part of the gloves. In this case, it is necessary to replace the gloves, but the gloves are replaced by stopping the supply of dry air or inert gas to the main body box, and then re-forming the atmosphere in the main body box after the replacement. In this method, it takes a long time to form an atmosphere in the main body box after exchanging the gloves, which causes a decrease in the operating rate of the glove box.

In order to avoid such a situation, for example, gloves are appropriately replaced before they are damaged. A method is known in which, when a glove is replaced with a lid device that closes the opening, the inner space of the main body box is blocked by the lid device, and the glove can be exchanged while maintaining the gas environment of the inner space of the main body box ( See, for example, Patent Document 1. The lid device disclosed in Patent Document 1 includes a support frame and a lid. The support frame is attached to a tubular body provided on the main body box. Specifically, a groove for engaging a support frame is formed on the inner peripheral surface of the tubular body, and the support frame is attached to the tubular body by fitting into the groove. The lid has a larger diameter than the opening formed in the main body box, and the opening can be closed from the inside of the main body box. In the lid, an O-ring is fitted in the vicinity of the outer peripheral edge of the front surface portion facing the inner wall surface of the main body box. In addition, a handle having a screw shaft is fixed to the center of the lid, and the handle has a screw shaft that is screwed into a screw hole formed in the support frame and extends to a position farther from the main body box than the support frame. Extend. The support frame and the lid are made of metal, for example.

When exchanging gloves, the support frame is fitted into the groove of the tubular body to be attached to the tubular body, and the handle is rotated, whereby the lid is pulled toward the support frame by the action of the screw. Then, when the front surface of the lid is brought into close contact with the inner wall surface of the main body box, the opening of the main body box is closed and the inner space of the main body box is closed to the outside. In this state, remove the old gloves and attach the new gloves to the tubular body. Here, since the main body box is sealed, the gas environment in the main body box does not change during the glove changing work. As a result, after the gloves are exchanged and the lid is removed, the closed space of the glove box surrounded by the gloves, the tubular body and the main body box can be returned to the original gas environment in a relatively short time.

Further, in the glove box disclosed in Patent Document 1, a ventilation path (32) is connected near the opening in the main body box. The ventilation passage leads to a closed space surrounded by a lid, a tubular body, and a new glove after the replacement when the gloves are exchanged, and this ventilation passage is switchably connected to a vacuum pump and a gas supply passage. .. According to such a configuration, after the gloves are exchanged, the gas environment of the space surrounded by the lid, the tubular body, and the new gloves after the exchange is returned to the gas environment similar to the internal space of the main body box in a short time. Suitable for increasing the operating rate of the glove box.

However, in the above-mentioned conventional glove box lid replacement device for exchanging gloves, it is necessary to form a dedicated groove in the tubular body for mounting the support frame, and the structure is relatively complicated. Further, the inside of the tubular body is invisible because it is covered with the glove and the tubular body, but it is necessary to fit the support frame in the groove in such a situation when the glove is exchanged, so that workability is poor. If the support frame and the lid are made of metal, the weight of these becomes heavy, which causes a decrease in workability when exchanging gloves. Further, even in the case where the above-mentioned ventilation passage is provided in the main body box, the structure becomes complicated, which causes a rise in the manufacturing cost of the glove box.

JP-A-8-229880

The present invention has been devised under such circumstances, and is suitable for improving the workability when exchanging gloves in a lid device for exchanging gloves attached to a glove box. The main object is to provide a glove replacement lid device.

In order to solve the above problems, the present invention employs the following technical means.

The glove replacement lid device provided by the present invention is a glove replacement lid device that is attached to a glove-mounting tubular body provided in a main body box to shut off the internal space of the main body box from the outside. And an inner lid arranged at a position relatively close to the body box, an outer lid arranged at a position relatively far from the body box, and any one of the inner lid and the outer lid. A rotating operation body, which is supported so as to be rotatable relative to one of the other in the axial direction, and has an operation handle located farther from the main body box than the outer lid, and a screw provided on the rotating operation body. A screw mechanism in which a shaft is screwed into a screw hole provided in the other of the inner lid and the outer lid, and an annular seal member supported across the outer peripheral portion of the inner lid and the outer peripheral portion of the outer lid. , A seal member displacement mechanism that displaces the annular seal member radially outward as the inner lid and the outer lid approach in the axial direction, and relative rotation prevention that prevents relative rotation of the inner lid and the outer lid. And a mechanism, wherein the inner lid or the outer lid has an extending portion extending radially outward from an outer peripheral portion of the inner lid or the outer lid.

In a preferred embodiment, the tubular body has a reduced diameter portion that projects inward in the radial direction, and the outer diameter dimension of the extension portion is larger than the inner diameter dimension of the reduced diameter portion.

In a preferred embodiment, the seal member displacing mechanism is formed on the inner lid, and is formed on the outer lid, and a first inclined surface that is displaced radially outwardly with increasing distance from the outer lid in the axial direction, A second inclined surface that is displaced radially outward as it moves away from the inner lid in the axial direction.

In a preferred embodiment, the tubular body is formed with an annular groove for attaching gloves, and the reduced diameter portion is a portion that protrudes radially inward corresponding to the annular groove. ..

In a preferred embodiment, the inner lid and the outer lid are mainly made of resin material.

In a preferred embodiment, a ventilation pipe for passing gas is supported by the inner lid, and a switching valve is attached to the ventilation pipe.

In a preferred embodiment, the annular seal member is an O-ring.

Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

It is a front view which shows an example of the glove box in which the glove replacement lid device according to the present invention is mounted. It is a principal part longitudinal cross-sectional view which shows an example of the glove exchange lid device which concerns on this invention. FIG. 3 is a longitudinal sectional view of a main part for explaining a method of using the glove replacement lid device shown in FIG. 2. FIG. 4 is a partially enlarged view of FIG. 3. FIG. 3 is a longitudinal sectional view of a main part for explaining a method of using the glove replacement lid device shown in FIG. 2. FIG. 6 is a partially enlarged view of FIG. 5. FIG. 3 is a longitudinal sectional view of a main part for explaining a method of using the glove replacement lid device shown in FIG. 2. FIG. 8 is a partially enlarged view of FIG. 7.

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

FIG. 1 shows an example of a glove box to which a glove replacement lid device according to the present invention is attached. The glove box A1 shown in the figure includes a main body box 1, a side box 2, an inner hatch 30, and an outer hatch 31. The main body box 1 partitions the work space from the outside in an airtight manner. The inner side opening 20 at one end of the side box 2 communicates with the main body box 1, and the outer side opening 21 at the other end can be opened to the atmosphere. The inner hatch 30 opens and closes the inner opening 20. The outer hatch 31 opens and closes the outer opening 21.

The upper part of the front surface of the main body box 1 is covered with a window glass 10 which is inclined obliquely upward, and a pair of working openings 11 for allowing a worker's hand to enter the main body box 1 are formed in the lower part. Each working opening 11 is covered with a glove 4 in an airtight manner through a glove-attaching tubular body 12, which will be described later with reference to FIG. 2, and is further closed with a removable lid 13. In some cases, the lid 13 may not be provided, and in this case, the glove 4 is always exposed to the outside of the main body box 1.

A vacuum pipe 141 that connects the inside of the main body box 1 to the suction port of a vacuum pump is connected to the lower part of the main body box 1, and dry air, inert gas, etc. in the main body box 1 are connected to the upper part of the main body box 1. A gas supply pipe 142 for supplying the atmospheric gas is connected.

Further, a pipe 151 for gas replacement is connected to the upper and lower parts of the main body box 1, and an oxygen meter is branched and connected to this pipe 151 via a branch pipe 152 so that the atmosphere in the main body box 1 can be confirmed. I have to. To the side box 2, a gas supply pipe 142 and a vacuum pump are connected and switched, and a supply/exhaust circuit 153 connected to the inner space of the side box 2 is connected. Also, in order to confirm the atmosphere of the inner space. An oximeter is also provided. The main body box 1 is supported by a mounting table 18 with casters 181 via columns 17.

FIG. 2 is a longitudinal sectional view of an essential part showing an example of the glove replacement lid device according to the present invention. 3, 5, and 7 are longitudinal cross-sectional views of a main part for explaining a method of using the glove replacement lid device shown in FIG.

The glove replacement lid device B1 is used by being attached to the tubular body 12. Prior to the description of the glove replacement lid device B1, the tubular body 12 will be specifically described with reference to FIG.

The tubular body 12 is airtightly attached to the front wall 16 of the main body box 1 so as to face the work opening 11 of the main body box 1. Two annular grooves 121 and 122 are formed on the outer peripheral surface of the tubular body 12. These annular grooves 121 and 122 are provided at a predetermined distance in the axial direction of the tubular body 12. The open end of the tubular body 12 is covered with a packing 123 made of an elastic body such as rubber to prevent the gloves 4 from being damaged.

The glove 4 is attached such that the open end portion 41 of the glove 4 is folded back to cover the outer peripheral surface of the tubular body 12. The glove 4 is fixed to the tubular body 12 by two O-rings 19 fitted in the annular grooves 121 and 122 from the outside of the open end portion 41. The O-ring 19 on the right side in the drawing in FIG. 2 is covered with an annular band 191 for preventing falling.

Two protrusions 124 and 125 are formed on the inner peripheral surface of the tubular body 12. These projecting portions 124 and 125 are portions corresponding to the annular grooves 121 and 122 and projecting annularly inward in the radial direction of the tubular body 12. The tubular body 12 having the above configuration is integrally formed of, for example, a resin material.

The glove replacement lid device B1 of the present embodiment includes an inner lid 5, an outer lid 6, a rotary operation body 7, and an annular seal member 8.

The inner lid 5 and the outer lid 6 are each substantially disc-shaped, and are separated by a predetermined distance in the thickness direction (axial direction). As will be understood with reference to FIG. 3 and the like which will be described later, when the glove replacement lid device B1 is attached to the tubular body 12, the inner lid 5 is arranged relatively close to the main body box 1. The outer lid 6 is arranged at a position relatively far from the main body box 1.

The inner lid 5 is made of, for example, a transparent resin material such as acrylic resin. A through hole 51 penetrating in the thickness direction (axial direction) is formed in the center of the inner lid 5 in the radial direction. The rotary operation body 7 described later is fitted into the through hole 51. A first inclined surface 52 is formed on the outer peripheral portion of the inner lid 5. The first inclined surface 52 is displaced radially outward as it moves away from the outer lid 6 in the axial direction of the inner lid 5. The first inclined surface 52 is a portion with which an annular seal member 8 described later abuts.

In this embodiment, the outer peripheral portion of the inner lid 5 is also formed with an extending portion 53 extending outward in the radial direction. In the present embodiment, the extension portion 53 has an annular shape, and the outer diameter dimension d1 of the extension portion 53 is larger than the inner diameter dimension d2 of the protrusions 124 and 125. Unlike the present embodiment, the extending portion 53 may be formed of a plurality of extending portions that are separated at appropriate intervals in the circumferential direction, instead of the annular configuration. A screw hole 54 is formed in a surface of the inner lid 5 facing the outer lid 6, and a spring pin 55 is embedded and fixed in the screw hole 54.

The outer lid 6 has a plate-shaped member 61 and a shaft member 62. The plate member 61 is made of a transparent resin material such as acrylic resin and has a disk shape. A through hole 611 having a circular cross section is formed at the center of the plate member 61 in the radial direction and penetrates in the thickness direction (axial direction). A second inclined surface 612 is formed on the outer peripheral portion of the plate member 61. The second inclined surface 612 is displaced radially outward as it moves away from the inner lid 5 in the axial direction of the plate-shaped member 61 (outer lid 6). The second inclined surface 612 is a portion with which the annular seal member 8 abuts. In the plate member 61, a pin insertion hole 613 is formed at a position facing the screw hole 54 of the inner lid 5. The spring pin 55 fixed to the inner lid 5 is inserted into the pin insertion hole 613.

The shaft member 62 has a flange 621. The shaft member 62 is fixed to the plate member 61 by a mounting screw 63, for example, in a state where the shaft member 62 is inserted into the through hole 611 of the plate member 61 and the flange 621 overlaps with the plate member 61. Although detailed illustration is omitted, the plate-shaped member 61 and the shaft member 62 are fixed using mounting screws 63 at a plurality of positions spaced apart in the circumferential direction. A screw hole 622 (female screw) is formed while penetrating the central portion of the shaft member 62 in the radial direction.

In the present embodiment, the outer diameter dimension d3 of the plate-shaped member 61 (outer lid 6) is smaller than the inner diameter dimension d2 of the protrusions 124 and 125.

The rotary operation body 7 has a shaft body 71 and an operation handle 72. The shaft body 71 extends in the axial direction and has a substantially cylindrical shape. The shaft body 71 has a flange 711, a fitting shaft part 712, and a screw shaft 713. The flange 711 is provided at one end (right end in the figure) of the shaft body 71 in the axial direction, and the outer diameter dimension of the shaft body 71 is gradually reduced from one end in the axial direction to the other end in the axial direction.

The fitting shaft portion 712 is a portion fitted into the through hole 51 of the inner lid 5. The outer diameter of the fitting shaft portion 712 is slightly smaller than the inner diameter of the through hole 51. Further, a C-ring 73 is attached to the shaft body 71 on the side opposite to the flange 711 with the fitting shaft portion 712 interposed therebetween in the axial direction. With this configuration, the shaft main body 71 (rotating operation body 7) is supported relative to the inner lid 5 so as to be relatively rotatable around the axial direction, and is prevented from moving relative to the axial direction. In the present embodiment, an O-ring 74 is interposed between the fitting insertion shaft portion 712 and the inner lid 5, and the fitting insertion shaft portion 712 and the inner lid 5 are sealed. ..

The screw shaft 713 is a male screw part that is screwed into a screw hole 622 provided in the shaft member 62 (outer lid 6). The screw shaft 713 and the screw hole 622 form a screw mechanism referred to in the present invention.

The operation handle 72 is fitted onto the other end of the shaft body 71 in the axial direction, and is fixed to the shaft body 71 by an appropriate means (not shown) such as a screw. As will be understood with reference to FIG. 3 and the like which will be described later, when the glove replacement lid device B1 is attached to the tubular body 12, the operation handle 72 is located farther from the main body box 1 than the outer lid 6. ..

A ventilation hole 714 is formed at the center of the shaft body 71 in the radial direction so as to penetrate in the axial direction. A screw hole 715 is formed at one axial end of the shaft body 71.

In the present embodiment, the ventilation pipe 9 is connected to one axial end (screw hole 715) of the shaft body 71. Accordingly, the ventilation pipe 9 is supported by the inner lid 5 via the shaft body 71 (rotation operation body 7). A switching valve 91 is attached to the ventilation pipe 9. The switching valve 91 is configured to switch and connect the ventilation pipe 9 to a gas supply line (not shown) and a vacuum line.

The annular seal member 8 is supported across the outer peripheral portion (first inclined surface 52) of the inner lid 5 and the outer peripheral portion (second inclined surface 612) of the outer lid 6 (plate member 61). In the present embodiment, the annular seal member 8 is composed of an O ring.

The glove replacement lid device B1 having the above-described configuration is arranged, for example, at a predetermined storage position in the vicinity of the work opening 11 in the main body box 1 when not in use except when the gloves are replaced.

Next, a usage method and an operation of the glove replacement lid device B1 will be described.

When exchanging gloves, an operator first puts his hand on the old glove 4 and extends his hand through the work opening 11 into the main body box 1 to grasp the operation handle 72 of the rotary operation body 7. After that, the glove replacement lid device B1 is pulled to the inner space of the tubular body 12 through the working opening 11 (see FIG. 2). Further, the glove replacement lid device B1 is pulled closer to bring the extending portion 53 of the inner lid 5 into contact with the protruding portion 124 of the tubular body 12, as shown in FIGS. As described above with reference to FIG. 2, since the outer diameter dimension d1 of the extending portion 53 is larger than the inner diameter dimension d2 of the protruding portion 124, the operation handle 72 is pulled to the left in the figure in the state shown in FIG. Then, the extending portion 53 is locked by the protruding portion 124. The protruding portion 124 corresponds to the reduced diameter portion in the present invention.

Next, the operation handle 72 (rotating operation body 7) is rotated around the axial direction while being pulled to the left in FIG. Here, with respect to the inner lid 5, the extension portion 53 is locked to the protruding portion 124 of the tubular body 12, whereby the rotation of the inner lid 5 is prevented. On the other hand, the rotary operation body 7 is supported so as to be rotatable relative to the inner lid 5 about the axial direction. Therefore, the rotating operation body 7 can be rotated even if the inner lid 5 does not rotate. Regarding the outer lid 6, the spring pin 55 fixed to the inner lid 5 is inserted into the pin insertion hole 613 of the plate-shaped member 61, so that the plate-shaped member 61 (outer lid 6) with respect to the inner lid 5 is fixed. Relative rotation is blocked. Therefore, if the inner lid 5 does not rotate, the outer lid 6 also does not rotate. The structure in which the spring pin 55 fixed to the inner lid 5 is inserted into the pin insertion hole 613 of the plate-shaped member 61 corresponds to the relative rotation prevention mechanism in the present invention.

When the operation handle 72 is turned in the direction in which the screw (screw shaft 713 and screw hole 622) is tightened, the shaft member 62 (outer lid 6) moves along the axial direction and approaches the inner lid 5 (FIGS. 5 and 6). See). Here, as described above, the annular seal member 8 is supported across the first inclined surface 52 of the inner lid 5 and the second inclined surface 612 of the outer lid 6 (the plate member 61). Therefore, when the inner lid 5 and the outer lid 6 approach each other in the axial direction, the annular seal member 8 is displaced radially outward.

When the operation handle 72 is further turned, the inner lid 5 and the outer lid 6 are brought into the closest state as shown in FIGS. 7 and 8. At this time, the inner lid 5 and the outer lid 6 (the plate-shaped member 61) contact each other at their outer peripheral portions. The annular seal member 8 is further displaced radially outward, and is compressed while being surrounded by the first inclined surface 52, the second inclined surface 612, and the inner surface of the tubular body 12. Then, the space between the tubular body 12 and the inner lid 5 is sealed. Further, an O-ring 74 is interposed between the fitting insertion shaft portion 712 and the inner lid 5. As a result, the inner space of the main body box 1 is sealed from the outside with the inner lid 5 serving as a boundary. The first inclined surface 52 of the inner lid 5 and the second inclined surface 612 of the outer lid 6 constitute a seal member displacement mechanism referred to in the present invention.

Next, the gloves 4 are replaced. Here, the old glove 4 is located on the outer side of the inner lid 5 (glove replacement lid device B1), and the O-ring 19 of the tubular body 12 is removed and pulled outward to easily remove it from the tubular body 12. It can be removed. The new glove 4 is easily fixed to the tubular body 12 by covering the tubular body 12 with the open end portion 41 from the outside and attaching the O-ring 19.

Next, the switching valve 91 of the ventilation pipe 9 is switched to connect the ventilation pipe 9 to the vacuum line, and the air in the space sealed by the glove 4, the tubular body 12 and the inner lid 5 is moved to the ventilation hole 714 and the ventilation pipe 9. Discharge through. After that, the switching valve 91 is switched to connect the ventilation pipe 9 to the gas supply line, and the sealed space is filled with the atmospheric gas. The operation of the switching valve 91 is performed by putting the other glove 4 in which the glove exchange work is not performed and extending the hand from the work opening 11 at the tip thereof.

Then, the hands are put on the new gloves 4 after replacement, and the operation handle 72 is rotated. Here, the operation handle 72 (rotation operation body 7) is pulled in the left direction in FIG. 7 and is turned in a direction in which the screws (the screw shaft 713 and the screw hole 622) are loosened. Then, the shaft member 62 (outer lid 6) moves along the axial direction and moves away from the inner lid 5. Then, after the states shown in FIGS. 5 and 6, the state returns to the states shown in FIGS. 3 and 4.

Next, the glove replacement lid device B1 is returned to the storage position in the main body box 1 through the working opening 11.

According to the glove replacement lid device B1 of the present embodiment, the glove replacement lid device B1 is pulled up while the extending portion 53 of the inner lid 5 is brought into contact with the protruding portion 124 (reduced diameter portion) of the tubular body 12. By rotating the operation handle 72, the inner space of the main body box 1 can be shielded from the outside with the inner lid 5 as a boundary. That is, the glove replacement lid device B1 can be attached to the tubular body 12 by a simple operation, and the workability is excellent.

With respect to the inner lid 5 and the outer lid 6, only by pulling them together and bringing the extending portion 53 (inner lid 5) into contact with the projecting portion 124 inside the tubular body 12, even when the operation handle 72 is rotated. The inner lid 5 and the outer lid 6 are prevented from rotating. Therefore, it is not necessary to provide the tubular body 12 with a groove structure or the like for locking the inner lid 5 or the outer lid 6, and when the glove replacement lid device B1 is attached to the tubular body 12, the structure is simple. Can be promoted.

Further, in the present embodiment, the protruding portion 124 (reduced diameter portion) is a portion that protrudes inward in the radial direction of the tubular body 12 corresponding to the annular groove 121 for mounting the glove 4. Such a configuration is more suitable for simplifying the structure when the glove replacement lid device B1 is attached to the tubular body 12.

In this embodiment, the inner lid 5 and the outer lid 6 are mainly made of a resin material. With such a configuration, the glove replacement lid device B1 as a whole is relatively lightweight and has excellent workability. Further, if the inner lid 5 and the plate-shaped member 61 are made of a transparent resin material as in the present embodiment, the state of each part of the glove replacement lid device B1 is easy to visually recognize and is easy to handle.

In the present embodiment, the inner lid 5 supports a ventilation pipe 9 provided with a switching valve 91 for passing gas. With such a configuration, after exchanging the gloves, it is possible to appropriately discharge gas or supply atmospheric gas to the space sealed by the gloves 4, the tubular body 12, and the inner lid 5. Therefore, the gloves 4 can be replaced without destroying the atmosphere of the glove box A1 (main body box 1). Further, in the present embodiment, the inner lid 5 (glove replacement lid device B1) is provided with the ventilation pipe 9 that allows the gas to be taken in and out of the space sealed by the glove 4, the tubular body 12 and the inner lid 5. .. Therefore, the existing structure of the glove box A1 may be maintained, and it is possible to prevent the structure of the entire glove box A1 from becoming complicated.

It is preferable that the above-mentioned glove changing operation is performed before the glove 4 is damaged. However, the glove 4 may be torn or a pinhole may be opened while working on the main body box 1 with the glove 4 attached. Such damage to the glove 4 can be detected by, for example, a gas densitometer connected to the main body box 1. Since the glove replacement lid device B1 of the present embodiment is excellent in workability as described above, the damaged glove 4 can be replaced quickly. Therefore, even if the glove 4 is suddenly damaged, the amount of external air flowing into the main body box 1 through the damaged part can be reduced, and as a result, the gas atmosphere in the main body box 1 can be formed after the glove is replaced. It is possible to reduce the time required.

Further, in the case where the main body box 1 is not provided with a lid 13 for closing the tubular body 12 for glove attachment when the glove 4 is damaged, and there is no spare spare new glove 4 for replacement, 4 cannot be replaced immediately, and as it is, external air continues to flow into the main body box 1 from the damaged part of the glove 4. Even in such a case, according to the glove replacement lid device B1 of the present embodiment, the glove replacement lid device B1 can be quickly attached to the tubular body 12, and the tubular body 12 is closed. It can function as a lid for doing.

Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to the above-described embodiments, and all modifications within the scope of the matters described in each claim are the scope of the present invention. To be included in.

In the above-described embodiment, the case where the extending portion (53) that is brought into contact with the protruding portion of the tubular body 12 is provided in the inner lid 5 has been described as an example, but such an extending portion is the outer lid. The configuration provided in No. 6 may be adopted.

Further, in the above-described embodiment, a configuration is provided in which the rotary operation body 7 is rotatably supported with respect to the inner lid 5, and the outer lid 6 is provided with the screw hole 622 into which the screw shaft 713 of the rotary operation body 7 is screwed. Although explained, it is not limited to this. For example, the rotation operating body 7 may be supported to be rotatable relative to the outer lid 6, and a screw hole into which the screw shaft 713 is screwed may be provided in the inner lid 5.

The annular seal member 8 is not limited to the O ring. For example, an annular seal member having a trapezoidal cross section, which is capable of planarly contacting the first inclined surface 52 and the second inclined surface 612, may be used.

In the above embodiment, the case where two O-rings 19 for fixing the glove 4 are attached to the tubular body 12 has been described, but the present invention is not limited to this. For example, the glove may be fixed by one O-ring, and in this case, one annular groove for mounting the O-ring is formed on the outer periphery of the tubular body.

A1 glove box B1 glove replacement lid device 1 main body box 10 window glass 11 working opening 12 tubular bodies 121, 122 annular groove 122 annular groove 123 packing 124 projecting portion (reduced diameter portion)
125 Projection 13 Lid 141 Vacuum Pipe 142 Gas Supply Pipe 151 Pipe 152 Branch Pipe 153 Supply/Exhaust Circuit 16 Front Wall 17 Support 18 Mounting Stand 181 Casters 19 O-ring 191 Annular Band 2 Side Box 20 Inner Opening 21 Outer Opening 30 Inside Hatch 31 Outer hatch 4 Gloves 41 Opening end 5 Inner lid 51 Through hole 52 First inclined surface 53 Extended portion 54 Screw hole 55 Spring pin 6 Outer lid 61 Plate member 611 Through hole 612 Second inclined surface 613 For pin insertion Hole 62 Shaft member 621 Flange 622 Screw hole 63 Mounting screw 7 Rotating operation body 71 Shaft body 711 Flange 712 Fitting and inserting shaft portion 713 Screw shaft 714 Vent hole 715 Screw hole 72 Operation handle 73 C ring 74 O ring 8 Annular seal member 9 through Trachea 91 switching valve

Claims (6)

A lid device for glove replacement, which is attached to a glove-mounting tubular body provided in a main body box to shut off the internal space of the main body box from the outside,
An inner lid arranged relatively close to the main body box,
An outer lid arranged relatively far from the main body box,
With respect to any one of the inner lid and the outer lid, a rotary operation body that is supported so as to be rotatable relative to the axial direction and that is located farther from the main body box than the outer lid, and
A screw mechanism in which a screw shaft provided in the rotary operation body is screwed into a screw hole provided in the other of the inner lid and the outer lid;
An annular seal member supported over the outer peripheral portion of the inner lid and the outer peripheral portion of the outer lid,
A seal member displacement mechanism that displaces the annular seal member radially outward as the inner lid and the outer lid approach in the axial direction,
A relative rotation blocking mechanism for blocking relative rotation of the inner lid and the outer lid,
The inner lid or the outer lid have a extended portion extending from an outer peripheral portion radially outwardly,
A glove replacement lid device in which a ventilation pipe for passing gas is supported by the inner lid, and a switching valve is attached to the ventilation pipe . The cylindrical body has a reduced diameter portion that protrudes radially inward,
The glove replacement lid device according to claim 1, wherein an outer diameter dimension of the extension portion is larger than an inner diameter dimension of the reduced diameter portion. The seal member displacement mechanism is formed on the inner lid, and is formed on the outer lid in the axial direction so as to be displaced outward in the radial direction with increasing distance from the outer lid, and is formed on the outer lid from the inner lid in the axial direction. The glove replacement lid device according to claim 1 or 2, further comprising: a second inclined surface that is displaced radially outwardly with increasing distance. The tubular body has an annular groove for attaching gloves,
The glove replacement lid device according to claim 2, wherein the reduced diameter portion is a portion that protrudes radially inward corresponding to the annular groove. The glove replacement lid device according to any one of claims 1 to 4, wherein the inner lid and the outer lid are mainly made of a resin material. The annular sealing member is an O-ring, gloves replacement lid device according to any one of claims 1 to 5.

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