JP2005246568A - Glove box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glove box which improves the workability for mounting and dismounting a fixing ring. <P>SOLUTION: In the glove box having the fixing ring 10 for fixing a sealing plug 8 fitted in a glove port 5, the fixing ring 10 comprises a pawl 33 to be engaged with a groove 17 provided on the outer periphery of the glove port 5, a small cylindrical portion 29 to be inserted into the sealing plug 8, and a plurality of engaging projections 37 provided on the outside surface of the small cylindrical portion 29 in the periphery. The sealing plug 8 forms axial grooves 25 which are engaged and disengaged with the engaging projections 37, and a peripheral groove 27 which is formed at the end portion of the axial grooves 25 and is elongated peripherally. In addition, a mark 43 is provided to indicate that the engaging projections 37 are positioned in the peripheral groove 27. By this configuration, in the case of the fixing and releasing by the fixing ring 10, the fixing ring 10 can be mounted and dismounted without deforming the engaging projections 37 for engaging the fixing ring 10 with the sealing ring 8, and further the fixation is confirmed by the mark 43. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a glove box, and more specifically, to a stationary ring that fixes a cylindrical mounting body fitted to a glove port to the glove port.

  For example, when handling contaminants such as radioactive substances, in order to ensure the safety of workers, the contaminants are handled inside a glove box maintained at a negative pressure. The work in the box is performed through a glove attached to a cylindrical glove port provided in the opening of the glove box.

As a method of attaching the glove to the glove port, a method is known in which the glove is attached to an inner ring that is a cylindrical attachment body, and the inner ring is fitted to the glove port (see, for example, Patent Document 1). . In this patent document 1, the stationary ring which prevents omission of an inner ring is proposed. The fixed ring is formed in an annular shape having a U-shaped cross section, and ring-shaped claws projecting inward are provided at positions corresponding to both ends of the U-shaped opening, and one of the claws is an inner circumference of the inner ring. It engages with a ring groove provided on the surface, and the other claw is configured to engage with a ring groove provided on the outer peripheral surface of the globe port.
Japanese Patent Laid-Open No. 2004-25366 (see FIGS. 3, 5 and 2-3)

  However, the fixing ring of Patent Document 1 widens the diameter of the ring-shaped claw that is locked in the groove on the outer peripheral surface of the glove port when fixing or releasing the mounting body, and the inner peripheral surface of the mounting body. The diameter of the ring-shaped claw to be locked in the groove has to be reduced and detached, and workability is poor.

  An object of the present invention is to improve workability of attaching and detaching a stationary ring.

  In order to solve the above-described problems, the present invention provides a cylindrical glove port provided in an opening of a box, for example, a cylindrical mounting body such as an inner ring or an airtight plug, and the mounting body is connected to the glove port. In the glove box having a fixing ring fixed to the glove box, the fixing ring includes a claw that is locked in a groove formed on the outer periphery of the glove port, a cylindrical portion that is inserted into the cylinder of the mounting body, and the cylinder. The mounting body is formed with a plurality of axial grooves into which the locking projections can be inserted and removed in the axial direction of the cylindrical inner surface. A circumferential groove extending in the circumferential direction at the end of the axial groove and into which a locking projection can be inserted is formed. Furthermore, the mark which shows that a latching protrusion is located in a circumferential direction groove | channel is provided corresponding to the inner surface of a mounting body, and a fixed ring, It is characterized by the above-mentioned.

  According to such a configuration, when fixing the mounting body inserted into the glove port, the plurality of locking protrusions of the fixing ring are inserted in alignment with the axial grooves formed on the inner peripheral surface of the mounting body. The nail of the stationary ring is locked in the groove on the outer periphery of the globe port. When the locking protrusion is located at the end of the axial groove, the fixing ring is turned and the locking protrusion is inserted into the circumferential groove to lock the fixing ring to the mounting body. In addition, when releasing the fixing of the mounting body, turn the fixing ring to remove the locking projection from the circumferential groove, remove the claw of the fixing ring from the groove on the outer periphery of the glove port, and remove the cylindrical portion of the fixing ring from the mounting body. Pull out. According to this, when the mounting body is fixed and released by the fixing ring, the fixing ring can be attached and detached without deforming the locking projections that lock the fixing ring and the mounting body.

  By the way, in such a configuration, since the axial groove and the circumferential groove on the inner surface of the mounting body are hidden by the cylindrical portion of the stationary ring, it cannot be determined from the appearance whether or not the locking protrusion is located in the circumferential groove. Therefore, in the present invention, a mark indicating that the locking projection is located in the circumferential groove is provided in association with the inner surface of the mounting body and the fixed ring. According to this, the fixed state by a fixed ring can be confirmed. This mark can be formed of a first mark indicating the position of the circumferential groove provided on the inner surface of the mounting body and a second mark indicating the position of the locking protrusion provided on the fixed ring.

  In addition, the fixed ring can be provided with auxiliary protrusions that are aligned with the locking protrusions and shifted in the circumferential direction. For example, the auxiliary protrusion is formed so as to be movable in the radial direction of the stationary ring by providing a slit in the cylindrical portion, and is positioned in the circumferential groove when the locking protrusion is positioned in the circumferential groove. Provide to do. Thus, when the cylindrical portion of the stationary ring is inserted into the mounting body, the auxiliary projection is retracted in the radial direction, and when the stationary projection is rotated and the locking projection is positioned in the circumferential groove, the auxiliary projection becomes the circumferential groove. It is located inside and is advanced and locked in the radial direction. As a result, the locking protrusion and the auxiliary protrusion are positioned in the circumferential groove, and both the locking protrusion and the auxiliary protrusion are locked in the circumferential groove, so that the fixing with the fixing ring can be surely realized. In addition, the operator can confirm the fixed state of the stationary ring by the sound of the auxiliary protrusion moving forward in the circumferential groove.

  According to the present invention, workability of attaching / detaching the stationary ring can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of an embodiment of an airtight stopper which is a mounting body of the present invention, and FIG. 2 is a sectional view taken along the line II-II in FIG. FIG. 3 is a front view of an embodiment of the stationary ring of the present invention, and FIG. 4 is a side view showing a section taken along the line IV-IV of FIG. FIG. 5 is a cross-sectional view illustrating the configuration of the glove port and the fixing of the airtight stopper. FIG. 6 is a perspective view illustrating a glove box.

  As shown in FIG. 6, the glove box of the present embodiment includes an airtight box 1. The box 1 has a plurality of openings formed in at least one of the side surfaces, and a transparent synthetic resin panel 3 is fitted in the openings. The panel 3 is formed with a circular opening, and a cylindrical glove port 5 is provided in the circular opening. The glove port 5 is fitted with an inner ring with a glove 7 and an airtight plug 8.

  As shown in FIG. 5, the globe port 5 is provided with a flange 9 at one end of the cylindrical portion. The flange 9 is disposed inside the glove box, and a ring-shaped pressing flange 11 is fastened by a set screw 13 from the outside of the glove box. The opening portion of the panel 3 is sandwiched between the flange 9 and the pressing flange 11, whereby the glove port 5 is attached to the glove box. A seal member 15 is provided between the panel 3 and the flange 9 and the pressing flange 11. A groove 17 is formed on the outer periphery of the globe port 5 in the circumferential direction.

  In such a glove port 5, a cylindrical mounting body is fitted. As the mounting body, there are an inner ring to which the glove 7 is mounted and an airtight plug 8. These wearing bodies are fixed to the glove port 5 by a fixing ring 10.

  The configuration of the mounting body will be described by taking the airtight stopper 8 as an example. As shown in FIGS. 1 and 2, the airtight plug 8 is formed in a bottomed cylindrical shape, and, for example, three grooves are formed on the outer peripheral surface. The groove located on the innermost side of the glove box, that is, the groove on the bottom side of the airtight stopper 8 is attached with a wiper 19 for removing dust and the like in the cylinder of the glove port, and the remaining groove is an airtight holding opening. A ring 21 is attached.

  On the inner peripheral surface of the opening side end portion of the hermetic plug 8, a diameter-enlarged portion 23 that is enlarged one step is formed. In the enlarged diameter portion 23, four axial grooves 25 extending in the axial direction are provided at equal intervals on the circumference. A circumferential groove 27 extends in the circumferential direction at the end of each axial groove 25, that is, at the bottom end of each axial groove 25. Each circumferential groove 27 extends to one side in the circumferential direction and is formed up to the front of the adjacent axial groove 25. In addition, the inner ring with the glove 7 which is a mounting body is formed in a cylindrical shape like the airtight stopper 8, and is provided with a wiper 19, an O-ring 21, an enlarged diameter portion 23, an axial groove 25, and a circumferential groove 27. It has been configured.

  As shown in FIGS. 3 and 4, the stationary ring 10 is formed in an annular shape having a U-shaped cross section. Specifically, it includes a small cylindrical portion 29, a large cylindrical portion 31 surrounding the small cylindrical portion 29, and a ring-shaped connecting portion 32 that connects the small cylindrical portion 29 and the large cylindrical portion 31. On the inner peripheral surface of the end portion of the large cylindrical portion 31, for example, six claws 33 are provided on the circumference at regular intervals. Each claw 33 is formed in a size that engages with a groove 17 formed on the outer periphery of the globe port 5. Cuts 35 are formed in the axial direction at the ends of the large cylindrical portions 31 located on both sides of each claw 33, so that each claw 33 can easily advance and retreat in the radial direction of the large cylindrical portion 31. On the outer peripheral surface of the end portion of the small cylindrical portion 29, for example, four locking projections 37 are provided at equal intervals on the circumference. Each locking projection 37 is formed in a size that can be inserted into the axial groove 25 of the hermetic plug 8 and can be inserted into the circumferential groove 27.

  On the outer peripheral surface of the end portion of the small cylindrical portion 29, an auxiliary projection 39 is provided side by side with the locking projection 37. The auxiliary protrusion 39 is provided so as to be positioned in the circumferential groove 27 when the locking protrusion 37 is positioned in the circumferential groove 27. The distance between the auxiliary protrusion 39 and the locking protrusion 37 is set so that the auxiliary protrusion 39 and the locking protrusion 37 are positioned at both ends of the circumferential groove 27. Cuts 41 are made in the axial direction at the ends of the small cylindrical portion 29 located on both sides of the auxiliary protrusion 39, so that the claw 33 can easily move forward and backward in the radial direction of the large cylindrical portion 31.

  Further, a mark 43 is provided on the inner surface of the hermetic stopper 8 and the stationary ring 10 to indicate that the locking projection 37 of the stationary ring 10 is located in the circumferential groove 27. The mark 43 is formed by a first mark 44 indicating the position of the circumferential groove 27 of the airtight stopper 8 and a second mark 45 indicating the position of the locking projection 37 of the stationary ring 10.

  An operation for fixing and releasing the airtight stopper 8 configured as described above to the glove port 5 with the fixing ring 10 will be described. First, when fixing the airtight stopper 8 to the glove port 5, the plurality of locking projections 37 of the fixing ring 10 are inserted in accordance with the axial groove 25 on the inner periphery of the airtight stopper 8 (step S1). As a result, the auxiliary projection 39 of the small cylindrical portion 29 of the stationary ring 10 contacts the inner surface of the enlarged diameter portion 23 of the airtight stopper 8 and retreats in the radial direction, and the claw 33 of the large cylindrical portion 31 of the stationary ring 10 Retreat in the radial direction by hitting the outer surface. When the locking projection 37 is positioned at the end of the axial groove 25, the claw 33 is positioned in the groove 17 formed on the outer peripheral surface of the globe port 5 and is locked forwardly in the radial direction.

  When the locking projection 37 is positioned at the end of the axial groove 25, the stationary ring 10 is rotated to align the first mark 44 and the second mark 45 (step S2). As a result, the locking projection 37 of the stationary ring 10 is inserted into the circumferential groove 27 of the hermetic plug 8, and the movement of the hermetic plug 8 and the stationary ring 10 in the axial direction is restricted by the locking projection 37. At this time, the auxiliary projection 39 is positioned in the circumferential groove 27 and advances in the radial direction, and the auxiliary projection 39 is locked to the circumferential groove 27.

  Thus, according to the present embodiment, the stationary ring 10 and the hermetic plug 8 can be locked without deforming the locking projections 37 that are locked to the hermetic plug 8. Workability can be improved. Moreover, since the fixed state by the fixed ring 10 can be confirmed by the first mark 44 and the second mark 45, safety can be improved. Further, by providing the auxiliary protrusion 39, the locking protrusion 37 and the auxiliary protrusion 39 are positioned in the circumferential groove 27, and both are locked to the circumferential groove 27, so that the fixing by the fixing ring 10 can be ensured. Further, the operator can confirm the fixed state of the stationary ring 10 by the sound of the auxiliary protrusion 39 moving forward in the circumferential groove 27.

  When releasing the fixation of the airtight stopper 8 fixed to the glove port 5, the fixing ring 10 is turned (step S3), and the locking projection 37 is moved from the circumferential groove 27 to the axial groove 25. At this time, the auxiliary protrusion 39 located in the circumferential groove 27 hits the inner surface of the enlarged diameter portion 23 of the airtight stopper 8 and retreats in the radial direction. And the nail | claw 33 of the stationary ring 10 is removed from the groove | channel 17 of the outer periphery of the globe port 5, and the stationary ring 10 is extracted from the airtight stopper 8 (step S4). In this case, the claw 33 can be easily detached from the groove 17 of the glove port 5 by forming the corner on the axial direction side of the claw 33 with an obtuse angle or roundness. Further, if the auxiliary projection 39 is formed with an obtuse angle or rounded corner on the circumferential side, the auxiliary projection 39 can be easily detached from the circumferential groove 27.

  Moreover, although the example which fixes the airtight stopper 8 was given and demonstrated in this embodiment, the inner ring with the glove 7 fitted by the glove port can also be fixed similarly.

  Furthermore, in the present embodiment, the first mark 44 indicating the position of the circumferential groove 27 provided on the inner surface of the airtight stopper 8 and the second mark indicating the position of the locking projection 37 provided on the stationary ring 10. However, the present invention is not limited to this, and can be provided at any position as long as the locking projection 37 of the stationary ring 10 is located in the circumferential groove 27.

  In the present embodiment, the fixed ring 10 is provided with the four locking projections 37, the six claws 33, and the one auxiliary projection 39, but the number of each can be changed as appropriate. Further, in the present embodiment, the interval between the locking protrusion 37 and the auxiliary protrusion 39 is positioned at both ends of the circumferential groove 27 of the airtight stopper 8. According to this, it is preferable that the fixing ring 10 can be prevented from rattling in the circumferential direction. However, the present invention is not limited to this, and the auxiliary projection 39 is not circumferential when the locking projection 37 is positioned in the circumferential groove 27. What is necessary is just to make it locate in the direction groove | channel 27. FIG. The auxiliary protrusions 39 and the claws 33 are formed so as to be able to advance and retreat in the radial direction by notches, respectively. Further, if a protrusion is provided at the boundary between the axial groove 25 and the circumferential groove 27 and the locking protrusion 37 of the stationary ring 10 is inserted into the circumferential groove 27 beyond the protrusion, the engagement is improved. The stop protrusion 37 can be prevented from coming out of the circumferential groove 27. Further, if another convex portion is provided in the circumferential groove 27, a concave portion corresponding to this convex portion is provided in the locking projection 37, and the concave portion of the locking projection 37 is fitted to this convex portion, the engaging portion is increased. It is possible to further suppress the stop protrusion 37 from coming out of the circumferential groove 27.

It is a front view of one Embodiment of the airtight stopper which is the mounting body of this invention. It is II-II sectional drawing of FIG. It is a front view of one embodiment of a stationary ring of the present invention. FIG. 4 is a side view showing the IV-IV cross section of FIG. It is sectional drawing explaining the structure of a glove port and fixation of an airtight stopper. It is a perspective view explaining a glove box.

Explanation of symbols

5 Globe port 7 Globe 8 Airtight stopper 10 Fixed ring 17 Groove 23 Expanded part 25 Axial groove 27 Circumferential groove 29 Small cylindrical part 31 Large cylindrical part 32 Connecting part 33 Claw 37 Locking protrusion 39 Auxiliary protrusion

Claims (3)

In a glove box having a cylindrical glove port provided in an opening of the box, a cylindrical mounting body fitted to the glove port, and a fixing ring for fixing the mounting body to the glove port,
The fixed ring includes a claw that is locked in a groove formed on an outer periphery of the globe port, a cylindrical portion that is inserted into a cylinder of the mounting body, and a plurality of circumferential portions on an outer surface of the cylindrical portion. And a locking projection of
The mounting body has a plurality of axial grooves formed in the axial direction of the inner surface of the cylinder, into which the locking protrusions can be inserted and removed, and extends in the circumferential direction at the end of the axial groove so that the locking protrusions can be inserted. A circumferential groove is formed,
A glove box, wherein a mark indicating that the locking projection is located in the circumferential groove is provided in association with an inner surface of the mounting body and the fixed ring.   The mark is a first mark indicating the position of the circumferential groove provided on the inner surface of the mounting body, and a second mark indicating the position of the locking protrusion provided on the fixed ring. The glove box according to claim 1, wherein the glove box is characterized. The fixed ring includes an auxiliary protrusion formed on the locking protrusion so as to be displaced in the circumferential direction, and the auxiliary protrusion is formed to be movable forward and backward in the radial direction of the fixed ring, and the locking protrusion 3. The glove box according to claim 1, wherein the glove box is provided so as to be positioned in the circumferential groove when positioned in the circumferential groove.

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