JPS6216397B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to objects that cannot be directly touched or devices that are operated in an atmosphere that cannot be touched (hereinafter referred to as
(hereinafter referred to as "shielding substance") is placed in a shieldable container or box (hereinafter simply referred to as "shielding box"), and in order to operate the shielding material, a mounting part for operating parts such as gloves and bags attached to the walls of the shielding box, etc. (hereinafter referred to as the exchange port section) structure. Conventionally, when manipulating a shielding substance in a shielding box, for example, as shown in FIG.
It is generally known to operate the box 1 by inserting the hand into the glove 3a from outside the box 1. If we look at the receiving part (referred to as the exchange port part 3 ) of the base 31 of the glove 3a on the wall 2, it has a structure as shown in FIG. In other words, a cylindrical fixed port 6 is fixed to the through hole of the wall 2 via a plate ring 4, a bolt 5, a ring 7, etc., and a sealing elastic ring is attached to the inner periphery of the base 31 of the globe 3a on the outer periphery. Ring-shaped groove 101 at 9a
A replacement port 10a is formed of a support ring 10 that is tightly fixed to the support ring 10 and has a ring-shaped protrusion 102 formed on the outer periphery of the rear end that can be engaged with a ring-shaped groove 61 formed at the center of the inner periphery of the fixed port 6. It is inserted. The sealing elastic ring 9a fastens the base 31 of the glove 3a to the outer periphery of the support ring 10 and is also tightly pressed against the inner circumferential surface of the fixed port 6, and the inside of the box 1 is sealed from the outside by this elastic ring 9a. It is in a state of being Moreover, the ring-shaped projection 102 engages with the ring-shaped groove 61, so that the exchange port 10a is prevented from moving within the fixed port 6. Reference numeral 8 denotes a holding ring holding down the exchange port 10a, and its uneven portion 81 is engaged with a ring-shaped uneven portion 62 formed on the inner periphery of the rear end of the fixed port 6, and the small circumferential portion at the tip supports it. Ring-shaped protrusion 10 of ring 10
It has a structure in which two parts are pressed against the ring-shaped groove 61. The glove 3a attached here needs to be replaced after a predetermined service life has elapsed. A method of replacing the glove 3a in this case will be explained with reference to FIGS. 2 and 3. First, remove the retaining ring 8 set in the fixed port 6, then set the replacement port 10b equipped with a new glove 3b of the same structure as the one described above in the extrusion replacement device 11, and fix the tip of the outer cylinder 11a. After attaching the exchange port 10b to the concave part of the concavo-convex part 62 of the port 6, by moving the inner cylinder 11b forward, the exchange port 10b is moved into its ring shape while the tip of the exchange port 10b is in contact with the rear end surface of the exchange port 10a. The replacement port 10a is pushed out into the box 1 by moving it until the protrusion reaches the ring-shaped groove 61 of the fixed port 6. Thereafter, the extrusion exchanger 11 is removed and the presser ring 8 is attached to the end as shown in FIG. 2, thereby completing the exchange. During the exchange, the new and old exchange ports 10a and 10
The inside of the box 1 is sealed from the outside by the elastic ring 9a shown in FIG. Looking at this exchange status, exchange port 10a
When fitting, there is a risk that the elastic ring 9a will come into contact with the ring-shaped groove 61 of the fixed port 6 and be damaged, and if it is damaged, the sealing performance after installation will not be reliable. Further, the ring-shaped protrusion 10 of the support ring 10
2 moves in a deformed state, the pushing force increases. However, if the inside and outside of the fixed port 6 are made larger, the amount of press contact (the amount of crushing) of the elastic ring 9a against the inner circumferential surface of the fixed port 6 will be reduced, resulting in poor sealing performance. This easily comes off from the ring-shaped groove 61 of the fixed port 6. Furthermore, if excessive force is applied inward to the shielding box 1 when operating the glove 3a, the support ring 10
The ring-shaped protrusion 102 of the fixing port 6 is deformed.
There is a danger that the replacement port 10a may come off the groove 61 and jump into the shielding box 1. In view of the above points, this invention solves the drawbacks of the conventional technology, and makes it possible to maintain the sealed state inside the shielding box when operating with gloves, etc. and when replacing them, and to ensure that gloves can be replaced. The purpose is to provide a replacement port structure. The gist of this invention resides in a structure of an exchange port for an operating member in a shielding box, which is characterized by the following four points. The inner peripheral surface of the fixed port 12 is made smooth. Support ring 1 that fits into fixed port 12
The protrusion on the outer circumferential surface of No. 3 has been eliminated. The support ring 13 was held down by the press ring 14. The presser ring 14 was held down by the stopper ring 15. This invention is based on the above-mentioned exchange port section 1 .
8 can be replaced smoothly, as a result, there is no damage to the sealing elastic ring 9a, and leakage of contaminants to the outside is reliably prevented.Furthermore, the support ring 13 is replaced with a specially constructed retaining ring 14 and stopper ring 15. Double pressing eliminates troubles such as when the exchange port section 18 jumps into the shielding box or comes out in the opposite direction. Hereinafter, one embodiment of the present invention will be described with reference to the drawings. Fig. 4 shows the side wall 2 of the shielding box 1 of the present invention.
This figure shows the glove exchange port section 18 provided in the glove. 12 is a fixed port having a through hole 17 with a smooth inner circumferential surface communicating with the outside, and one end is fixed to the wall 2 with a plate ring 4, a bolt 5, and a ring 7, as in the conventional case, The other end is a free end surface 1 with a ring groove 121 formed on the outer periphery.
It has a structure with 22 parts. This fixed port 1
2 may be constructed integrally with the wall 2. Reference numeral 13a denotes a replacement port which is fitted into the inner peripheral surface of the fixed port 12 and consists of a glove 3a similar to the conventional one, an elastic sealing ring 9a and a support ring 13, and the support ring 13 has a large ring-shaped ring on the outer periphery of the tip. Small grooves 131 and 132 are formed,
The ring-shaped large groove 131 has a base 31 of the globe 3a.
is tightly tightened and fixed by an elastic ring 9a, and the end of the base 31 of the glove 3a is disposed in the ring-shaped small groove 132. Due to this compressive deformation of the elastic ring 9a, the space between the support ring 13 and the fixed port 12 is sealed as in the conventional case, and the inside of the box 1 is sealed from the outside. Reference numeral 133 denotes a ring-shaped uneven portion provided on the inner periphery of the other end of the support ring 13, and the uneven portion 133 includes an uneven portion 141 of the holding ring 14, which has an outer diameter portion 142 larger than the inner diameter of the fixed port 12. is engaged. The side surface 143 of the large diameter portion 142 of the holding ring 14 is in contact with the end surface 122 of the fixed port 12, thereby preventing movement of the exchange port 13a. 1
5 is a stopper ring for preventing movement of the presser ring 14, and this stopper ring 15
is formed with ring-shaped protrusions 151 and 152 at both ends, and one of the ring-shaped protrusions 151 is connected to the ring-shaped groove 1 provided on the outer periphery of the fixed port 12.
21, and the other ring-shaped protrusion 152 presses the rear end surface of the holding ring 14 against the end surface 122 of the fixed port 12 with its side surface 153. With such a configuration, even if an excessive force is applied inward to the shielding box 1 during glove operation, the retainer ring 14 is securely fixed by the stopper ring 15, and the exchange port 13a equipped with the glove 3a is secured to the box. There is no need to worry about jumping into 1 or going in the opposite direction. Replacement of the exchange port 13a in the port portion 18 having such a configuration is performed using the extrusion exchange device 16 as shown in FIG. First, the new exchange port 1 is equipped with a newly prepared glove 3b in the inner cylinder 16b of the extrusion exchange device 16.
3b and the retaining ring 14 removed from the old exchange port 13a are inserted in a connected manner, and the end of the outer cylinder 16a of the device 16 is inserted into the ring-shaped groove 1 of the fixed port 12.
21 and then advanced to the inner cylinder 16b,
The old exchange port 13a is pushed out into the box 1, and at the same time the new exchange port 13b is fitted into the fixed port 12. Therefore, after this, the extrusion exchanger 16 is removed and the stopper ring 15 is removed as shown in FIG.
Once installed, the replacement is complete. When replacing the glove, since the inner circumference of the fixed port 12 is smooth, the elastic ring 9a will not be scratched as in the conventional case, and the sealing performance after installation is always good. Also, when replacing the large diameter portion 142 of the presser ring 14,
If the side surface 143 of the retainer ring 14 contacts the end surface 122 of the fixed port 12, the retainer ring 14 cannot move any further, so there is no fear that the exchange port 13b may be pushed in too far. In addition, in the sense of reducing the pushing force, the elastic ring 9
It is desirable to apply a lubricant such as grease to either the inner surface of the fixed port a or the fixed port 12. Although the illustrated example shows a glove as the operating member, it may also be a bag. As described above, according to the present invention, the exchange port structure is equipped with a specially constructed presser ring and a stopper ring, so that the exchange port does not jump into the box when operating the glove as in the conventional case. There is no danger that it would have happened, and there would have been no danger that it would have happened if it exited in the opposite direction. Furthermore, when replacing the elastic ring, there was a risk of damage due to the elastic ring coming into contact with the inner circumferential groove of the fixed port, but with the present invention, this does not occur, and the pushing force when pushing in is small. It has many advantages, such as being able to save time, and has great practical value.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a generally used shielding box, Figure 2 is an explanatory diagram showing the main parts of a conventional exchange port, Figure 3 is an explanatory diagram showing the exchange state of the conventional exchange port, and Figure 4 is an explanatory diagram showing the exchange state of the conventional exchange port. FIG. 5 is an explanatory diagram of a main part showing the exchange port section of the present invention, and FIG. 5 is an explanatory diagram showing the exchange state of the exchange port of the present invention. 1: Box, 2: Wall, 3 , 18 : Exchange port, 3
a, 3b: Globe, 31: Base, 4: Plate ring, 5: Bolt, 6, 12: Fixed port, 61,
121: Ring-shaped groove, 62, 133: Uneven part,
7:〇Ring, 8,14: Presser ring, 81,1
41: Uneven part, 9a: Sealing elastic ring, 10
a, 10b, 13a, 13b: exchange port, 1
0,13: Support ring, 101: Ring-shaped groove, 102,151: Ring-shaped projection, 11,1
6: Extrusion exchange device, 11a, 16a: Outer cylinder, 11
b, 16b: inner cylinder, 122: end face, 131: ring-shaped large groove, 132: ring-shaped small groove, 142: large diameter part, 143, 153: side surface, 15: stopper ring.

Claims (1)

[Claims] 1. There is an exchange port 13a in which the base 31 of the operating member 3a is fastened to the outer periphery of a support ring 13 by a sealing elastic ring 9a, and the support ring 13 is a cylindrical part provided on the wall 2 of the shielding box 1. It is fitted inside the shaped fixed port 12,
In the structure of the port portion of the operating member in the shielding box, the fitting surface between the fixed port 12 and the support ring 13 is sealed by compression deformation of the sealing elastic ring 9a, and the fixed port 12 is formed on the inner surface. The support ring 13 is configured to have a smooth structure, and the support ring 13 is configured to have no protrusions on its outer peripheral surface. A presser ring 1 having a diameter portion 142 and a convex portion on the outer periphery that engages with an inner circumferential engagement portion of the support ring 13a.
4, the retainer ring 14 has a protrusion 151 that engages with the outer peripheral engaging portion of the fixed port 12, and a stopper that has a protrusion 152 that presses the large diameter portion of the retainer ring 14 against the end surface 122 of the fixed port 12. A structure of an exchange port part for an operating member in a shielding box, characterized in that it is supported by a ring 15.