JP5687581B2 - High-pressure oxygen supply device and seal member used therefor - Google Patents

Description

  The present invention relates to a high-pressure oxygen supply device that supplies oxygen to humans and animals in a high-pressure environment, and a seal member that fluid-tightly seals between an opening portion of a container body and a lid in the high-pressure oxygen supply device. About.

  As is well known, in humans and animals, when oxygen is introduced in an environment where the pressure is higher than atmospheric pressure, fatigue is recovered by dissolving a large amount of oxygen in blood and body fluids based on Henry's law. Effects and relaxation effects can be obtained. Examples of supplying oxygen to humans and animals in such a high-pressure environment include, for example, the high-pressure shown in Patent Document 1 (Japanese Patent Laid-Open No. 2007-202995) and Patent Document 2 (Japanese Patent Laid-Open No. 2010-230136). There is an oxygen supply device.

  The high-pressure oxygen supply device includes a container main body that accommodates people and animals, and a pressurization control unit that increases the internal pressure of the container main body by supplying pressurized air to the inside of the container main body. If the pressurization control means raises the internal pressure of the container main body above atmospheric pressure, oxygen is supplied to the person or animal inside the container main body in an environment of high atmospheric pressure.

  By the way, the container main body of the high-pressure oxygen supply device is provided with an opening for people and animals to enter and exit, and the lid is arranged to be openable and closable with respect to the opening. When closing the opening part of the container body with a lid and increasing the pressure inside the container body by the pressurization control means, if the air inside the container body leaks outside between the opening part and the lid, There was a problem that it was difficult to keep the internal pressure of the container body at a high pressure.

  Therefore, as measures for coping with the above problem, Patent Document 1 and Patent Document 2 propose a seal member that seals between the opening of the container body and the lid in a fluid-tight manner.

  In the high-pressure oxygen supply device described in Patent Document 1, a fitting recess is provided at the edge of the opening portion of the container body, and an elastically deformable seal member is accommodated in the fitting recess, and the edge of the lid A fitting convex part having a shape corresponding to the fitting concave part is provided on the part. When the opening part of the container body is closed by the lid, the seal member is sandwiched between the fitting convex part and the fitting concave part so as to be compressed and deformed. Is sealed with a seal member.

  In the high-pressure oxygen supply device described in Patent Document 2, a seal member that can be elastically deformed is provided on one side of the container body with the lid (sliding door) interposed therebetween, and the other side with the lid interposed therebetween. On the other side, a bag body that bulges and deforms by injection of fluid is provided. When the opening part of the container body is closed by the lid body, the lid body pushes the lid body by the bulging deformation caused by the fluid injection, and the lid body is exposed to the edge of the opening part of the container body through the seal member. By being pressed, the space between the opening portion of the container body and the lid is sealed with a seal member.

JP 2007-202995 A JP 2010-230136 A

  However, in the high-pressure oxygen supply device described in Patent Literature 1, when the internal pressure of the container body increases, a force in the direction in which the lid opens the opening of the container body is exerted on the lid. At this time, if the lid body is displaced in the direction of opening the opening portion of the container body, the separation distance between the lid body and the opening portion of the container body is increased, and the seal member is not easily compressed and deformed between them. Therefore, there is a possibility that it is difficult to reliably seal between the lid and the opening of the container body.

  In order to cope with the above-mentioned problems, for example, a lid is formed using a material having a large rigidity so that the lid is not easily displaced even when the internal pressure of the container is increased, or the lid is attached to the container body. On the other hand, it may be possible to adopt a special fixing structure that is firmly fixed. However, when a highly rigid material or a special fixing structure is used, there is a problem that the structure becomes complicated or the manufacturing cost becomes high.

  In addition, in the high-pressure oxygen supply device described in Patent Document 2, since the bag body is separately provided in addition to the seal member, the number of parts increases, and when the lid body is opened and closed, fluid is injected into the bag body and Since it is necessary to discharge quickly, the fluid injection and discharge structure is complicated. For this reason, there existed a problem that the manufacturing cost of a high pressure oxygen supply apparatus became high.

  The present invention has been made in the background as described above, and the object of the present invention is that the structure for fluid-tight sealing between the opening of the container body and the lid is relatively easy. An object of the present invention is to provide a high-pressure oxygen supply device that has a simple structure and is low in cost, and a seal member that is used in the high-pressure oxygen supply device.

The high-pressure oxygen supply device according to claim 1 relating to the present invention, which has been made to solve the above-described problems, comprises (a) an opening part through which a person or an animal enters and exits, and the person or animal is brought into the inside through the opening part. a housing for the container body (12), and (b) the container body (12) the lid to the opening portion is openably disposed so as to cover from the outside (24), (c) said container body ( 12) an air supply means (16, 80) for supplying pressurized air to the inside, an exhaust means (76, 78) for discharging the air inside the container body (12) to the outside, and the air supply means. (16, 80) is an air supply amount for supplying air to the inside of the container body (12) and an exhaust amount for exhausting air from the inside of the container body (12) by the exhaust means (76, 78), respectively. Supply / exhaust control means (72) for controlling, The exhaust control means (72) controls the air supply means (16, 80) and the exhaust means (76, 78) so that the air supply amount is larger than the exhaust amount by a predetermined amount. the internal pressure of the container body (12) and pressure control means for controlling the high pressure by a predetermined amount than the atmospheric pressure (14), (d) the size slightly larger than the edge of the container the opening part of the body (12) The container body (12) has an annular shape when viewed from the front, and is disposed radially outward of the edge of the opening portion with the opening portion closed by the lid (24) . a seal receiving portion that closes by (e) an annular shape in the front view of the container body (12), an elastically deformable material, said opening portion said lid of said container body (12) (24) in was state, between the edge and the lid member of the opening portion (24) Is incorporated viewed compressed and deformed, and if the pressure control means (14) is controlled so as the internal pressure of the container body (12) is higher than the atmospheric pressure, the inside and the outside of the container body (12) and deformed and opened radially outwardly due to the pressure difference, sealed by abutting on the seal receiving portion, said opening portion and the lid member of the container body (12) between the (24) fluid-tightly In the high-pressure oxygen supply device (10) provided with a sealing member (64) for stopping , the pressurization control means (14) is an internal pressure detection means (43, 44, 74) for detecting the internal pressure of the container body (12). ) And pressure determination means (72) for determining whether the internal pressure of the container body (12) detected by the internal pressure detection means (43, 44, 74) is larger or smaller than a reference value of the predetermined pressure in a predetermined time. ) And the pressure determining means (72) When it is determined that the internal pressure of 2) is smaller than the reference value, the air supply means (16, 80) secures the air supply amount to the container body (12), while the exhaust means (76, 78), by controlling the supply / discharge control means (72) so as to limit the exhaust amount from the container main body (12), the internal pressure of the container main body (12) is excessively increased. And a seal assist means (72) for forcibly expanding and deforming the seal member (64) radially outward to abut against the seal receiving portion by increasing the pressure difference between the inside and the outside of , characterized in that configured to include a.

  In the high-pressure oxygen supply device of the present invention, a person or an animal enters the inside from the opening portion of the container body, and the opening portion of the container body is closed with a lid. When the pressure control means controls the internal pressure of the container body to be higher than the atmospheric pressure, the seal member expands and deforms radially outward based on the pressure difference between the inside and the outside of the container body, and the seal receiving portion Abut. As a result, the gap between the lid and the opening of the container body is fluid-tightly sealed with a sealing member, so that the internal pressure of the container body is maintained at a high atmospheric pressure, and oxygen is contained in the container body in a high atmospheric pressure environment. Supplied to people and animals.

  Here, when the opening of the container body is closed by the lid and the internal pressure of the container body increases, the lid is affected by the pressure difference between the inside and outside of the container body, Even if the seal member is displaced in a direction away from the opening portion, the seal member expands and deforms outward in the radial direction and comes into contact with the seal receiving portion to seal between the lid and the opening portion of the container body.

  That is, in the sealing between the lid and the opening portion of the container body, the direction in which the lid body may be separated from the opening portion of the container body is different from the direction in which the seal member is separated from the seal receiving portion. Thereby, it is prevented that the deformation | transformation for a sealing member contact | abutting to a seal | sticker receiving part is impaired by the displacement of a cover body.

  Therefore, according to the high-pressure oxygen supply device of the present invention, since the sealing member is stably deformed to seal between the opening portion of the container body and the lid body, The space between the lid and the lid can be surely sealed.

  In addition, the sealing structure between the opening portion of the container body and the lid is realized with a relatively simple structure by the expansion deformation utilizing the pressure difference between the inside and the outside of the container body in the seal member. In addition, the cost of the high-pressure oxygen supply device can be reduced.

  Moreover, since the supply / discharge control means can control the air supply amount of the air supply means and the exhaust amount of the exhaust means, for example, the internal pressure of the container main body at the initial stage of operation to start pressurizing the inside of the container main body. The air supply and exhaust volume are controlled so that the air pressure rises slowly, or the internal pressure of the container body slowly decreases when the operation closes to the end of the operation to reduce the pressure inside the container body. It is also possible to do. As a result, the burden on the person or animal when the internal pressure of the container body changes abruptly is reduced.

Further, in such a high-pressure oxygen supply device, when the internal pressure detection means detects the internal pressure of the container body and the pressure determination means determines that the internal pressure is smaller than the reference value, the seal assist means secures the air supply amount. While controlling the supply / discharge control means to limit the exhaust amount, the internal pressure of the container main body is excessively increased to increase the pressure difference between the inside and the outside of the container main body. As a result, the seal assisting means forcibly expands and deforms the seal member radially outward and contacts the seal receiving portion.

  In other words, since the seal assist means as described above is provided, for example, when the internal pressure of the container body does not become so high according to the size and shape of the container body, the air supply performance of the air supply means, etc. (in other words, If the difference between the internal pressure and the external pressure of the container body does not increase to the extent that the seal member is expanded outward in the radial direction), the seal member is deformed so as to forcibly contact the seal receiving portion. The space between the opening of the container body and the lid can be sealed. Therefore, the seal performance can be further improved.

Moreover, in the high pressure oxygen supply apparatus of the present invention, as described in claim 2 , for example, the pressure control means (14) is configured such that the pressure determination means (72) has an internal pressure of the container body (12) . When it is determined that it is larger than the reference value, the container body by the air supply means (16, 80) while ensuring the exhaust amount from the container body (12) by the exhaust means (76, 78). By controlling the supply / discharge control means (72) so as to limit the amount of air supplied to (12) , an overpressure suppressing means (72 ) for suppressing an excessive internal pressure of the container body (12). ) May be adopted.

  In such a high-pressure oxygen supply device, when the internal pressure detection means detects the internal pressure of the container body and the pressure determination means determines that the internal pressure is greater than the reference value, the overpressure suppression means ensures the exhaust amount. By controlling the supply / exhaust control means so as to limit the air supply amount, the internal pressure of the container body is prevented from becoming excessive. As a result, in addition to reducing the burden on humans or animals when the internal pressure of the container body becomes excessive, it is possible to prevent the durability of the container body and the lid from being lowered.

Further, in hyperbaric oxygen supply apparatus of the present invention, for example as described in claim 3, in one of said lid and the edge of the opening portion of the container body (12) (24) The container body (12) and the lid (24) are continuously extending in the circumferential direction, and are provided with a bottom-side recessed groove (62) for receiving the bottom of the seal member (64) , and the container the other of the opening portion of the edge portion and the lid body (12) (24), a groove extending continuously in the circumferential direction thereof vessel body (12) and the cover (24), wherein distal end side groove for accommodating the tip portion of the sealing member (64) (28) is provided, in a state where the container the opening part of the body (12) is closed by said lid (24), the seal member (64) is the bottom groove (62) and the distal-side concave grooves (28) In the the sealing member deformed by compression in the thickness direction of the (64), said pressure control means (14) is controlled so as the internal pressure of the container body (12) is higher than the atmospheric pressure, the sealing member (64 by contacting the side wall portion of the radially outer side of the tip end side grooves (28) tip of the) is flared radially deformed outwardly, the opening portion of the container body (12) and the lid when sealed in a fluid-tight body (24) Toga該sealing member (64), said seal receiving portion configured by at least a portion of the side wall portion of the radially outwardly of the distal end groove (28) What is done may be adopted.

  In such a high-pressure oxygen supply device, since the bottom of the seal member is accommodated in the bottom groove, it is easy to use the bottom groove when fixing the bottom of the seal member to the container body or the lid. It can be fixed to the substrate, thereby improving the production efficiency.

  Moreover, even if the internal pressure of the container body becomes excessive and a large force is applied to the seal member to deform outward in the radial direction, the bottom portion and the tip portion of the seal member are accommodated in the bottom groove and the tip groove, respectively. Therefore, the seal member has a structure in which it is difficult for the seal member to get over the seal receiving portion and to be turned up radially outward. For this reason, a sealing member contacts a seal receiving part stably, and sealing performance is improved.

Moreover, in the high pressure oxygen supply device of the present invention, for example, as described in claim 4 , the tip side is between the bottom portion and the radially outer side wall portion in the tip side concave groove (28) . groove diameter toward the bottom side from the upper opening side of (28) has a tapered groove gradually decreases (82) is provided, said container said opening portion of the body (12) the lid (24) It is also possible to adopt a configuration in which the distal end portion in the radial direction of the seal member (64) is in contact with the tapered groove portion (82) in a state where the seal member (64) is closed.

  In such a high-pressure oxygen supply device, in particular, when a lid is formed using a material that is weaker than a metal such as a synthetic resin, and the bottom of the seal member is fixed to the edge of the lid In addition, the sealing performance between the lid and the opening of the container body can be improved.

That is, when the lid is formed of a material having a relatively low strength, the central portion of the lid may be deformed so as to bulge from the inside to the outside of the container body when the container body is pressurized. When the central part of the lid body is deformed in this way, the seal member is wound inwardly in the radial direction of the lid body as the edge portion of the lid body is deformed so as to be wound inwardly in the radial direction of the lid body. There is a possibility of displacement.

Therefore, as in the high-pressure oxygen supply apparatus of the present invention, the distal end portion of the seal member is provided in the distal end side concave groove, and the distal end portion of the sealing member in the radial direction is provided with the opening portion of the container body closed by the lid. And the taper-shaped groove portion are in contact with each other, even if a force is applied to the seal member inward in the radial direction of the lid body, the contact of the seal member with the taper-shaped groove portion acts as a drag, and the seal member It is suppressed that a member displaces so that it may wind in the radial direction inner side of a cover body.

  Therefore, it is suppressed that a gap is formed between the seal member and the seal receiving portion due to the displacement of the seal member so as to be wound inwardly in the radial direction of the lid body. Is improved.

Further, in hyperbaric oxygen supply apparatus of the present invention, for example as described in claim 5, in a state where the opening portion of the container body (12) is closed by said lid (24), and the pressure In a state before the pressure control means (14) controls the internal pressure of the container body (12) to be higher than the atmospheric pressure, the distal end portion on the radially outer side of the seal member (64) is recessed on the distal end side. The structure is in contact with the tapered groove portion (82) of the groove (28) , and the distal end portion in the radial direction of the seal member (64) is separated from the bottom portion of the distal end side concave groove (28) . It is also possible to adopt.

  In such a high-pressure oxygen supply device, since the opening portion of the container main body is closed by the lid body, the radially outer tip portion of the seal member is in contact with the tapered groove portion of the tip side concave groove. As in the high-pressure oxygen supply device according to claim 6, when the inside of the container body is pressurized, the seal member is suppressed from being displaced so as to be wound inward in the radial direction of the lid body, and the sealing performance Is improved.

In addition, since the distal end portion of the seal member in the radial direction is separated from the bottom portion of the groove on the distal end side with the opening portion of the container body closed by the lid, the entire distal end portion of the seal member is The occurrence of permanent deformation (so-called “losing shape”) of the seal member can be suppressed as compared with the contact with the bottom of the front-end concave groove. Thereby, the deterioration of the sealing performance due to the deformation of the seal member is suppressed.

Moreover, the distal end portion in the radial direction of the seal member is separated from the bottom portion of the groove on the distal end side before the pressurization control means controls the internal pressure of the container body to be higher than the atmospheric pressure. Therefore, when the pressure control means pressurizes the inside of the container main body, the front end of the seal member easily expands and deforms outward in the radial direction. . Therefore, the sealing performance is improved by the seal member easily coming into contact with the seal receiving portion.

In addition, in the high-pressure oxygen supply device of the present invention, the tip end on the radially inner side of the seal member is formed in the tip-side concave groove by utilizing the contact between the tip portion on the radially outer side of the seal member and the tapered groove portion. Means for separating from the bottom of the substrate will be realized, resulting in a simplified structure.

Moreover, in the high pressure oxygen supply device of the present invention, for example, as described in claim 6 , a diameter of the seal member (64) that contacts the tapered groove portion (82) of the tip side concave groove (28). It is also possible to adopt a configuration in which the distal end portion in the outer direction is a tapered seal portion (84) having a shape in which the diameter dimension gradually decreases from the bottom portion side to the distal end portion side of the seal member (64). It is.

  In such a high-pressure oxygen supply device, a large contact area between the front end portion of the seal member and the front end side concave groove is ensured by the contact between the tapered seal portion and the tapered groove portion. As a result, even when a force is applied to the sealing member inward in the radial direction of the lid when the container body is pressurized, the drag based on the contact between the sealing member and the tapered groove is further exerted. As a result, the sealing performance is further improved.

Moreover, since the distal end portion of the seal member in the radial direction is tapered, when the seal member abuts on the distal end side groove, compared to the tip portion not tapered. Generation of permanent deformation of the seal member is suppressed. As a result, a decrease in sealing performance due to permanent deformation of the sealing member is suppressed.

In the high-pressure oxygen supply device of the present invention, as described in claim 7 , for example, a lubricant is provided between the tip side concave groove (28) and the tip portion of the seal member (64). It is also possible to adopt a configuration in which the tip side concave groove (28) and the tip of the seal member (64) are in contact with each other via the lubricant.

  In such a high-pressure oxygen supply device, when the opening portion of the container main body is closed by the lid body, the front end portion of the seal member is easily fitted into the front-end concave groove via the lubricant. Thereby, for example, even if the distal end portion of the seal member and the recessed groove on the distal end side are not located somewhat concentrically due to an assembly error between the lid body and the container main body or due to secular change of the seal member, It is possible to seal the distal end portion by accommodating it in the recessed groove on the distal end side. Therefore, the ease of manufacturing and the sealing performance can be improved.

A sealing member (64) according to an eighth aspect of the present invention is used for the high-pressure oxygen supply device (10) according to any one of the first to seventh aspects.

  Since the sealing member of the present invention is used in the high-pressure oxygen supply device as described above, the difference between the internal pressure and the external pressure of the container body is used when sealing between the opening of the container body and the lid. Then, it expands and deforms radially outward and comes into contact with the seal receiving portion.

Therefore, the permanent deformation of the seal member is suppressed as compared with a conventional seal member that is only compressed and deformed in order to fill the space to be sealed. The sealing performance between the opening part of the main body and the lid is improved.

Further, the sealing member of the present invention (64), for example as described in claim 9, wherein the opening portion is the lid of the container body in the hyperbaric oxygen supply apparatus (10) (12) (24) Before closing by the elastic material , the elastic material is deformed into a round shape so that both end portions (overlapping surface 66) of the elastic material overlap each other in the elastically deformable rod-shaped elastic material , and both end portions of the elastic material ( together and has a circular by superimposing the overlay plane 66) to each other, fixing the upper portion or a lower end portion of the elastic material into the opening portion of the edge or lid of the container body (12) (24) It is also possible to adopt the configuration that is used.

  In such a seal member, since the rod-shaped elastic material is rounded into an annular shape, for example, compared with the case where the annular seal member is formed by piercing the central portion of the disk-shaped elastic material, There is no need to put off scraps. Therefore, cost reduction is achieved based on omission of the end material.

Further, the sealing member of the present invention (64), for example as described in claim 10, secured to the edge or the lid of the said opening of the elastic material wherein the container body (12) (24) in which states that an annular shape in a front view of the container body (12) is, overlapping surfaces of mutually superposed end portions in the elastic material (66) is the container of the opening portion of the body (12) It is also possible to employ a configuration that is inclined with respect to the radial direction.

  In such a sealing member, since the overlapping surface of both end portions of the elastic material is inclined with respect to the radial direction of the opening portion of the container body, the overlapping surface is compared with the sealing member parallel to the radial direction. As a result, the overlapped area increases. Moreover, it becomes a structure where both ends are mutually latched with respect to the movement of the sealing member in the radial direction. Therefore, even if the seal member is displaced or deformed in the radial direction based on the difference between the internal pressure and the external pressure of the container main body, both end portions of the seal member are difficult to come off, The sealing performance between the lid and the lid is improved.

The block diagram which shows the structure of the oxygen capsule for animals as one Embodiment of this invention. The front view which shows the state which attached the opening-and-closing lid and the control box to the capsule main body which comprises some oxygen capsules for animals. The right view which shows the state which attached the opening-and-closing lid and the control box to the capsule main body. The rear view which shows the state which attached the opening-and-closing lid and the control box to the capsule main body. The front view which shows the flange-shaped member which comprises some oxygen capsules for animals. The rear view which shows the opening / closing lid | cover which comprises a part of oxygen capsule for animals. It is the longitudinal cross-sectional view which expands and shows roughly the principal part of the oxygen capsule for animals, (a) is a figure which shows the state which closed the opening part of the capsule main body with the opening-and-closing lid, (b) is a capsule main body It is a figure which shows the state which closed the opening part of this with the opening-and-closing lid, and raised the internal pressure of the capsule main body with the control box and the air pump.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, in order to explain the content of the present invention in an easy-to-understand manner, illustrations and descriptions of members and parts that are less relevant to the present invention are omitted as necessary.

FIG. 1 shows an overall configuration of an animal oxygen capsule 10 as an embodiment relating to a high-pressure oxygen supply apparatus of the present invention. The animal oxygen capsule 10 includes a capsule body 12 as a container body, an open / close lid 24 as a lid, a control box 14 as a pressurizing control means , an air pump 16 as an air supply means (including a motor 80 described later), and the like. It is configured to include.

As shown in FIGS. 2, 3, and 4, the capsule body 12 has a substantially cylindrical shape with a bottom as a whole, and includes a circular pipe 18, a flange-shaped member 20, a fixed plate 22, and a plurality of fixed shafts 26. And so on. The circular pipe 18, the flange-shaped member 20, the fixing plate 22, and the opening / closing lid 24 are formed using a hard synthetic resin material such as polycarbonate (PC), polyethylene terephthalate (PET), or acrylic (PMMA). Yes. Note that part or all of the capsule body 12 and the opening / closing lid 24 may or may not have optical transparency. The circular pipe 18 has a cylindrical shape.

  As shown in FIG. 5, the flange-shaped member 20 has a flange shape, and an annular front-end-side groove 28 is formed on the front side (the front side of the drawing in FIG. 5), and the back side (see FIG. 5). An annular pipe fitting groove 30 is formed on the surface (the back side of FIG. 5). Further, the flange-shaped member 20 is integrally formed with a pair of leg portions 32 and 32. Further, a plurality of fixing pins 33 are provided on the front side of the flange-shaped member 20 so as to be spaced apart in the circumferential direction. The fixing pin 33 has a circular rod shape from the proximal end portion to the distal end portion, and the distal end portion has a large-diameter disk shape.

The fixed plate 22 has a substantially disk shape (see FIG. 4), and an annular pipe fitting groove 34 is formed on the back side (the back side of the paper in FIG. 4). In addition, a pair of leg portions 36 and 36 are integrally formed on the fixed plate 22. Furthermore, the fixing plate 22 has a safety valve mounting hole 38 for attaching a safety valve (not shown), an air supply hole 40 for attaching an air supply line 39, an exhaust hole 42 for attaching an exhaust pipe 41, A detection hole 44 for attaching an internal pressure detection conduit 43 as an internal pressure detection means (including a detection hole 44 and a pressure sensor 74 described later) is provided through each.

  One end and the other end of the circular pipe 18 are fitted into the pipe fitting groove 30 of the flange-like member 20 and the pipe fitting groove 34 of the fixing plate 22 through packing (not shown), respectively. Yes. Around the circular pipe 18, a plurality of circular rod-shaped fixed shafts 26 are provided spaced apart in the circumferential direction, and both end portions of each fixed shaft 26 are screwed to the flange-shaped member 20 and the fixed plate 22. ing. Thereby, the flange-shaped member 20 and the fixing plate 22 are fixed to both ends of the circular pipe 18, and the bottomed cylindrical capsule body 12 in which one end of the circular pipe 18 is opened is configured. An opening / closing lid 24 is attached to the opening of the capsule body 12.

  As shown in FIG. 6, the opening / closing lid 24 has a substantially disc shape as a whole, and includes a disc-shaped lid body 46 and an annular fixing ring 48. A plurality of fixing holes 50 are provided in the fixing ring 48 so as to be spaced apart from each other in the circumferential direction. The fixing hole 50 has a gourd shape in which a large-diameter circular hole and a long hole in the circumferential direction are combined. Further, around the fixing hole 50, a reinforcing metal fitting 52 for supplementing the strength of the fixing ring 48 is provided. Further, a plurality of long holes 54 are provided in the fixing ring 48. Furthermore, the fixing ring 48 is provided with a protruding gripping portion 56.

  A plurality of locking pins 58 project from the lid body 46 so as to be spaced apart from each other in the circumferential direction. The locking pin 58 has a circular rod shape from the proximal end portion to the distal end portion, and the distal end portion has a large-diameter disk shape. The lid body 46 is provided with a plurality of insertion holes 60. The insertion hole 60 has substantially the same size and shape as the large-diameter circular hole of the fixing hole 50 of the fixing ring 48.

Back side bottom groove 62 face to the annular (paper front side of FIG. 6) of the lid body 46 is formed. A packing 64 as a seal member is attached to the bottom side groove 62. The packing 64 has an annular shape by rounding sponge rubber (void is discontinuous) as a rod-like elastic material that can be elastically deformed, and overlapping both end portions of the sponge rubber. The bottom of the packing 64 is accommodated in the bottom-side groove 62, and the bottom surface of the packing 64 is fixed to the bottom surface of the bottom-side groove 62 with an adhesive or the like.

  In particular, in the present embodiment, the overlapping surfaces 66 of both ends overlapped with each other in the packing 64 are inclined at a predetermined angle α with respect to the radial direction of the opening / closing lid 24 (radial direction of the opening portion of the capsule body 12). Yes.

  Such a fixing ring 48 is superimposed on the front side (the front side of the paper surface of FIG. 2, the back side of the paper surface of FIG. 6), and the circular rod-shaped portion of the locking pin 58 is inserted into the long hole 54 of the fixing ring 48. In addition, the large-diameter disk-shaped portion of the locking pin 58 is locked in the long hole 54. Accordingly, the fixing ring 48 is locked to the lid body 46 so as to be rotatable by the length of the long hole 54. The opening / closing lid 24 including the lid body 46 and the fixing ring 48 is attached to the flange-like member 20 of the capsule body 12 via a trillion fitting so as to be opened and closed.

  That is, the opening / closing lid 24 is attached to the opening portion of the capsule body 12 so as to be opened and closed. A person can open the opening / closing lid 24 and accommodate animals such as dogs and cats from the opening of the capsule body 12 inside the capsule body 12.

  In order to close the opening portion of the capsule body 12 with the opening / closing lid 24, first, the holding portion 56 is held by hand and the fixing ring 48 is rotated to fix the insertion hole 60 of the lid body 46 and the fixing ring 48. The large-diameter circular hole of the working hole 50 is aligned concentrically. Then, the opening / closing lid 24 is moved in the direction of closing the opening of the capsule body 12, and the fixing pin 33 of the flange-shaped member 20 is inserted into the large-diameter circular hole of the insertion hole 60 and the fixing hole 50. Then, the holding portion 56 is held by hand and the fixing ring 48 is rotated in the clockwise direction in FIG. 2 so that the large-diameter disk-like portion of the fixing pin 33 of the flange-like member 20 is a long hole of the fixing hole 50. Lock to the part.

As a result, as shown in FIG. 7A, the front end portion of the packing 64 fixed to the opening / closing lid 24 is accommodated in the front end side concave groove 28 of the flange-like member 20, and the opening portion of the capsule body 12 is formed. The lid is covered with an opening / closing lid 24. The packing 64 is compressed and deformed by being sandwiched between the edge of the opening portion of the capsule body 12 and the opening / closing lid 24 in a state where the opening portion of the capsule body 12 is closed by the opening / closing lid 24.

  In this embodiment, a well-known patch lock 68 is provided between the opening / closing lid 24 and the flange-shaped member 20, and when the opening of the capsule body 12 is closed by the opening / closing lid 24, the patch lock 68 is closed. It is supposed to be. Further, the lid body 46 is provided with a push lock 70. When the opening portion of the capsule body 12 is closed by the opening / closing lid 24, the push lock 70 is pushed into an arbitrary hole provided in the grip portion 56 of the fixing ring 48. 70 is inserted. Thereby, the relative rotation of the opening / closing lid 24 and the fixing ring 48 is prevented. A control box 14 and an air pump 16 are attached to such a capsule body 12.

The control box 14 includes an ECU 72 and internal pressure detection means (the above-described internal pressure detection pipe line described above) composed of a supply / exhaust control means, a pressure determination means, a seal assist means, and an overpressure suppression means comprising a microcomputer including a CPU, ROM, RAM and the like. 43 and the detection hole 44), and a digital pressure sensor 74 as an exhaust means (including a silencer 78, which will be described later). However, it has 76 built-in.

The pressure sensor 74 is connected to the detection hole 44 of the capsule main body 12 via the internal pressure detection pipe line 43 and is electrically connected to the ECU 72. The electromagnetic valve 76 is electrically connected to the ECU 72, one end of the electromagnetic valve 76 is connected to the exhaust hole 42 of the capsule body 12 via the exhaust pipe 41, and the other end of the electromagnetic valve 76 is exhausted. It is opened to the atmosphere via a silencer 78 as a means (including the aforementioned electromagnetic valve 76) .

The air pump 16 is configured to be driven by a motor 80 as air supply means (including the air pump 16 described above) controlled by a command from the ECU 72, and a discharge hole for discharging air from the air pump 16 has an air supply line 39. Through the air supply hole 40 of the capsule body 12. Further, the ECU 72 is provided with an operation switch for starting / stopping the operation of the air pump 16, an operation lamp that is lit during the operation, and the like.

  The ECU 72 controls the motor 80 and the electromagnetic of the air pump 16 so that the amount of air supplied to the capsule body 12 of the air pump 16 is larger than the amount of exhaust discharged from the capsule body 12 through the electromagnetic valve 76 and the silencer 78 by a predetermined amount. The valve 76 is controlled. Thereby, the ECU 72 controls the internal pressure of the capsule body 12 to a pressure higher than the atmospheric pressure by a predetermined amount.

  When the internal pressure of the capsule main body 12 is controlled to be higher than the atmospheric pressure in this way, the packing 64 is in the radial direction due to the pressure difference between the inside and the outside of the capsule main body 12 as shown in FIG. By expanding and deforming outward and contacting the radially outer side wall portion of the tip side concave groove 28, the gap between the opening portion of the capsule body 12 and the open / close lid 24 is fluid-tightly sealed.

  Particularly in the present embodiment, the ECU 72 determines whether the internal pressure of the capsule body 12 detected by the pressure sensor 74 is larger or smaller than a reference value of the predetermined pressure for a predetermined time. When the ECU 72 determines that the internal pressure of the capsule body 12 is smaller than the reference value, the ECU 72 reduces the amount of exhaust from the capsule body 12 by the electromagnetic valve 76 while ensuring the amount of air supplied to the capsule body 12 by the air pump 16. By controlling the air pump 16 and the electromagnetic valve 76 so as to limit the internal pressure of the capsule body 12 and increasing the pressure difference between the inside and the outside of the capsule body 12, the packing 64 is moved radially outward. It is forcibly expanded and deformed and is brought into contact with the radially outer side wall portion of the tip side concave groove 28.

  On the other hand, when the ECU 72 determines that the internal pressure of the capsule body 12 is larger than the reference value, the ECU 72 secures the amount of air exhausted from the capsule body 12 by the electromagnetic valve 76, while reducing the amount of air supplied to the capsule body 12 by the air pump 16. By controlling the air pump 16 and the electromagnetic valve 76 so as to limit, the internal pressure of the capsule body 12 is suppressed from becoming excessive.

  Further, as shown in FIGS. 7A and 7B, the bottom portion from the top opening side of the tip side concave groove 28 is located between the bottom portion of the tip side concave groove 28 and the radially outer side wall portion. A taper-shaped groove portion 82 whose diameter dimension gradually decreases toward the side is provided, and the distal end portion of the packing 64 in the radial direction is tapered in a state where the opening portion of the capsule body 12 is closed by the opening / closing lid 24. It is in contact with the groove 82. In particular, the taper-shaped seal having a shape in which the radially outer distal end portion of the packing 64 that contacts the tapered groove portion 82 of the distal-end concave groove 28 gradually decreases in diameter from the bottom side of the packing 64 toward the distal end side. Part 84.

  In the present embodiment, the diameter of the packing 64 is in a state where the opening of the capsule body 12 is closed by the opening / closing lid 24 and before the ECU 72 controls the internal pressure of the capsule body 12 to be higher than the atmospheric pressure. The distal end portion in the direction outward is in contact with the tapered groove portion 82 of the distal end side recessed groove 28, and the radially inner end portion of the packing 64 is separated from the bottom portion of the distal end side recessed groove 28.

  Incidentally, the distal end side groove 28 of the present embodiment is deformed so that the distal end portion of the packing 64 gets over the distal end side recessed groove 28 by biting into the distal end portion of the packing 64 when excessive pressure is applied to the packing 64. A restraining rib 86 is provided for restraining.

  Further, in the present embodiment, a lubricant is provided between the front end side concave groove 28 and the front end portion of the packing 64, and the front end side concave groove 28 and the front end portion of the packing 64 are in contact with each other via the lubricant. Yes.

  As described above, according to the animal oxygen capsule 10 of the present embodiment, when the opening of the capsule body 12 is closed by the opening / closing lid 24 and the internal pressure of the capsule body 12 increases, the opening / closing lid 24 is Even when the capsule body 12 is displaced in the direction away from the opening of the capsule body 12 due to the effect of the pressure difference between the inside and the outside of the capsule body 12, the packing 64 expands and deforms outward in the radial direction. Abutting on the radially outer side wall of the groove 28, the gap between the opening / closing lid 24 and the opening of the capsule body 12 is sealed. As is clear from this, the seal receiving portion of the present invention is constituted by the radially outer side wall portion of the tip side concave groove 28.

  That is, when sealing between the opening / closing lid 24 and the opening portion of the capsule body 12, the packing 64 is at the tip in a direction (leftward in FIG. 7) in which the opening / closing lid 24 may be separated from the opening portion of the capsule body 12. It is different from the direction (downward in FIG. 7) away from the radially outer side wall portion of the side groove 28. This prevents the packing 64 from being damaged due to the displacement of the opening / closing lid 24 due to the contact of the packing 64 with the radially outer side wall portion of the leading end side recessed groove 28.

  Therefore, according to the animal oxygen capsule 10 of the present invention, the packing 64 is stably deformed for sealing between the opening portion of the capsule body 12 and the opening / closing lid 24. It is possible to securely seal the gap between the opening portion and the opening / closing lid 24.

  Moreover, the sealing structure between the opening of the capsule body 12 and the opening / closing lid 24 is realized with a relatively simple structure by the expansion deformation utilizing the pressure difference between the inside and the outside of the capsule body 12 in the packing 64. As a result, the cost of the oxygen capsule for animals can be reduced.

  As mentioned above, although one embodiment of the present invention has been described in detail, the present invention is not limited to such an embodiment, and various modifications can be made based on the knowledge of those skilled in the art unless the embodiment departs from the spirit of the present invention. The present invention can be implemented in a form to which changes, corrections, improvements and the like are added.

  For example, a circumferential groove may be formed on the surface exposed to the inside of the capsule body 12 in the packing 64 in a state where the opening portion of the capsule body 12 is closed by the opening / closing lid 24. As a result, the area of the packing 64 that receives the internal pressure of the capsule body 12 can be increased, and the packing 64 can be more easily deformed radially outward.

DESCRIPTION OF SYMBOLS 10 ... Oxygen capsule for animals, 12 ... Capsule main body, 24 ... Opening / closing lid, 64 ... Packing, 72 ... ECU

Claims (10)

A container body (12) having an opening part through which a person or an animal enters and exits, and housing the person or animal through the opening part;
A lid (24) which is arranged to be opened and closed by the opening portion so as to cover from outside of the container body (12),
Air supply means (16, 80) for supplying pressurized air to the inside of the container body (12), exhaust means (76, 78) for discharging the air inside the container body (12) to the outside, The air supply means (16, 80) supplies air to the inside of the container body (12), and the exhaust means (76, 78) exhausts air from the inside of the container body (12). Supply / exhaust control means (72) for controlling the amount of exhaust gas, and the supply / exhaust control means (72) is configured so that the supply amount is larger than the exhaust amount by a predetermined amount. By controlling the air supply means (16, 80) and the exhaust means (76, 78), the pressure control means (14 ) controls the internal pressure of the container body (12) to a pressure higher than the atmospheric pressure by a predetermined amount. ) And
Said rather large slightly from the edge portion of the opening portion of the container body (12) has an annular shape in a front view of the container body (12), closed by the opening portion the lid (24) A seal receiving portion disposed radially outward of the edge portion of the opening portion,
An annular shape in the front view of the container body (12), an elastically deformable material, in a state where the opening portion of the container body (12) is closed by said lid (24), the opening portion When the pressure control means (14) controls the internal pressure of the container body (12) to be higher than the atmospheric pressure when it is sandwiched between the edge and the lid (24) and is compressed and deformed. , and deformed and opened radially outwardly by a pressure difference between the inside and the outside of the container body (12), by abutting on the seal receiving portion, and the opening portion of the container body (12) lid A high pressure oxygen supply device (10) comprising a sealing member (64) for fluid-tightly sealing the body (24) ;
The pressure control means (14)
Internal pressure detecting means (43, 44, 74) for detecting the internal pressure of the container body (12);
Pressure determining means (72) for determining whether the internal pressure of the container body (12) detected by the internal pressure detecting means (43, 44, 74) is larger or smaller than a reference value of a predetermined pressure in a predetermined time;
When the pressure determining means (72) determines that the internal pressure of the container body (12) is smaller than the reference value, the air supply to the container body (12) by the air supply means (16, 80). By controlling the supply / discharge control means (72) so as to limit the exhaust amount from the container main body (12) by the exhaust means (76, 78) while securing the amount, the container main body (12 ) To increase the pressure difference between the inside and the outside of the container body (12), thereby forcibly expanding and deforming the seal member (64) radially outward. Seal assist means (72) for contacting the part;
Hyperbaric oxygen supply apparatus characterized by configured to include a (10). The pressurization control means (14) is configured such that when the pressure determination means (72) determines that the internal pressure of the container main body (12) is larger than the reference value, the container by the exhaust means (76, 78). while ensuring the exhaust amount from the main body (12), said supply and discharge control means so as to restrict the air supply amount to the container body (12) by the air supply means (16,80) (72) by controlling, container body (12) hyperbaric oxygen supply apparatus according to claim 1 having an internal pressure inhibits contains excessive pressure suppression means (72) from becoming excessive (10). In the edge portion and the lid opening portion in one of (24), a groove extending continuously in the circumferential direction thereof vessel body (12) and the cover (24) of the container body (12) A bottom groove (62) for receiving the bottom of the seal member (64 ) is provided;
Wherein the other of said opening portions of the edge and the lid of the container body (12) (24), a groove extending continuously in the circumferential direction thereof vessel body (12) and the cover (24) , A tip side concave groove (28) for receiving the tip portion of the seal member (64 ) is provided,
In a state where the opening portion is closed by said lid (24) of the container body (12), said sealing member (64) is the bottom groove (62) and the distal-side concave grooves (28) the deformed by compression in the thickness direction of the seal member (64) between, when the pressure control means (14) is controlled so as the internal pressure of the container body (12) is higher than the atmospheric pressure, the sealing member ( by tip 64) abuts the side wall portion of the radially outer side of the tip-side groove and deformed and opened radially outward (28), the opening portion of the container body (12) and said when sealed in a fluid-tight lid (24) Toga該sealing member (64), said seal receiving portion by at least a portion of the side wall portion of the radially outwardly of the distal end groove (28) The high pressure oxygen supply device (10) according to claim 1 or 2 , wherein the high pressure oxygen supply device (10) is configured . A taper shape between the bottom portion of the tip side concave groove (28) and the radially outer side wall portion gradually decreases in diameter from the top opening side to the bottom side of the tip side concave groove (28). groove (82) is provided, wherein in a state where the opening portion is closed by said lid (24) of the container body (12), the distal end portion of the radially outward of said sealing member (64) is the The high-pressure oxygen supply device (10) according to claim 3 , wherein the high-pressure oxygen supply device (10) is in contact with the tapered groove (82 ) . In a state where the opening portion is closed by said lid (24) of the container body (12), and said pressure control means (14) so that the internal pressure of the container body (12) is higher than atmospheric pressure In the state before the control, the radially outer tip portion of the seal member (64) is in contact with the tapered groove portion (82) of the tip side concave groove (28) , and the seal member ( 64) The high pressure oxygen supply device (10) according to claim 4 , wherein a radially inner tip portion of 64) is separated from a bottom portion of the tip side concave groove (28 ) . In the seal member (64) , a radially outer front end portion that contacts the tapered groove portion (82) of the front end side concave groove (28) is directed from the bottom side to the front end portion side of the seal member (64). The high pressure oxygen supply device (10) according to claim 4 or 5 , wherein the tapered seal portion (84) has a shape whose diameter is gradually reduced. Lubricant is provided between the tip side concave groove (28) and the tip of the seal member (64) , and the tip side concave groove (28) and the tip of the seal member (64) are The high-pressure oxygen supply device (10) according to any one of claims 3 to 6 , wherein the high-pressure oxygen supply device (10) is in contact with each other via a lubricant. A seal member (64) used in the high pressure oxygen supply device (10) according to any one of claims 1 to 7 . Before the said opening of the container body (12) in the hyperbaric oxygen supply apparatus (10) is closed by said lid (24), both end portions (superposition of the elastic material in the elastic material of the elastically deformable rod-like The elastic material is circularly deformed so that the surfaces 66) are superposed on each other, and both end portions (superimposed surfaces 66) of the elastic material are superposed on each other to form an annular shape, and the upper end of the elastic material The sealing member (64) according to claim 8 , wherein the lower end portion is fixed to an edge of the opening portion of the container body (12) or the lid (24 ) . In a state where the elastic material exhibits a said annular in a front view of the edge or the lid of the opening portion is fixed to (24) of said container body (12) of the container body (12), the elastic material The sealing member (64) according to claim 9 , wherein the overlapping surfaces (66) of both end portions overlapped with each other are inclined with respect to the radial direction of the opening portion of the container body (12 ) .

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