JP2501494B2 - Medical outlet connection mechanism - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting mechanism for connecting an outlet to which medical gas such as oxygen, laughing gas and air is supplied and a connecting plug detachably connected to the outlet.

[0002]

2. Description of the Related Art For example, an outlet used in a medical facility such as a hospital is supplied with medical gas such as oxygen, laughing gas and air, and a connection plug is detachably connected to a connection port of the outlet, or A device with a connection plug (hereinafter, simply referred to as a device) is detachably connected directly to the connection port of the outlet, and the medical gas is guided to a flexible tube extending from the connection plug. A typical prior art is shown in FIG.
The panel 111 has an opening end 113 of an outlet 112.
Is protruding, and the connection plug 114 is inserted into the opening 113.
Alternatively, the instrument 108 is inserted, engaged and connected. When the connection plug 114 or the instrument 108 is connected to the opening 113, when the connection plug 114 or the instrument 108 is removed from the opening 113, the knob 116 protruding from the panel is engraved with an arrow. An angular displacement operation is performed by hand as indicated by 117. This releases the engagement between the opening 113 and the connection plug 114 or the instrument 108.

[0003]

In such a prior art, when the connection plug or the instrument connected to the connection port is pulled out, the connection plug or the instrument is released from the locked state. It is necessary to perform angular displacement operation on the knob engraved with the knurl protruding from the panel,
For example, it is not possible to easily remove the connection plug with only one hand. Especially when the equipment is attached,
In order to perform this operation, a hand must be inserted between the instrument and the panel, which is inconvenient. Furthermore, the vent for medical gas formed in the outlet is provided with a filter for removing fine suspended matter such as dust mixed in the medical gas, and therefore, from the connection port. There is a problem that the pressure loss of the medical gas flowing out is large. In addition, when the outlet is removed for maintenance or inspection work or repair of the outlet, there is a problem that the main valve provided at a remote position must be closed to prevent gas from flowing out, which is inconvenient. Moreover, the operation member may be provided so as to project from the panel provided with the outlet. When the operation member projects from the panel in this way, the operator's clothes may be caught, and improvement of safety is desired.

Therefore, an object of the present invention is to make it possible to remove the connection plug by a simple operation and to reduce the time and effort for opening and closing the main valve at the time of maintenance and inspection work, repair and the like, which is convenient. It is an object of the present invention to provide a medical outlet connection mechanism that has improved safety and improved the pressure loss of medical gas as much as possible.

[0005]

The present invention comprises (a) a base 2
3, a base main body 41 having an axis along the plug connection direction and in which a first valve chamber 45 to which medical gas is supplied is formed; and from the base main body 41 to the plug connection side along the axis. It has an inner screw 49 protruding from the first valve chamber 45 on the plug connection side, and has a cylindrical small-diameter portion 42 having a smaller diameter than the base body 41. At the circumferential position protruding outward, one or a plurality of discrimination fitting recesses 80 corresponding to the type of medical gas are provided.
And a first valve hole member 44 attached to the base portion 23, which has a first valve seat 47 in which a first valve hole 46 is formed facing the first valve chamber 45. (C) The first valve body 22 provided in the first valve chamber 45 and facing the first valve hole 46, and (d) the first valve body 22 provided in the first valve chamber 45,
The first spring 21 that applies a spring force in the direction of seating on the valve seat 47
(E) In the tubular body 25, one end portion in the axial direction of the tubular body 25 is screwed into the inner screw 49 of the small diameter portion 42 in the small diameter portion 42, and the other end portion in the axial direction of the tubular body 25. Is the small-diameter portion 4
2, a tubular body 25 that projects toward the plug connection side and has an engagement groove 87 formed at the other end portion over the entire circumference in the circumferential direction; and (f) a tubular portion 66 having a tubular portion 66 and a bottom portion 67. Of the filter 65, the base end portion of the filter 65 that is open along the plug connection side and is open on the plug connection side is fixed to the one end portion inside the tubular body 25, and the outer peripheral surface of the tubular portion 66. And the inner peripheral surface of the tubular body 25 are separated by a gap δ, and the bottom portion 67 on the side opposite to the plug connection side of the filter 65 has
A protrusion 68 is provided on the opposite side of the plug connection side, and the protrusion 68 is inserted through the first valve hole 46 to move the first valve body 22 to the first position.
A filter 65 capable of being opened so as to be separated from the first valve seat 47 against the spring force of the compression spring 21 and (g) plugged in the tubular body 25 rather than the filter 65. A second valve hole member 56 having a second valve seat 58 fixed to the filter side and having a second valve hole 55 facing the filter 65 side; and (h) closer to the filter 65 than the second valve hole member 56. The second valve body 59 that is disposed and faces the second valve hole 55, and (i) one end of the second valve body 59 contacts the filter 65 and the other end of the second valve body 59 contacts the second valve body 59. A second spring 64 for applying a spring force in the direction of seating on the valve seat 58, and (j) the attachment member 24 extending along the axis,
The small-diameter portion 42 of the base portion 23 and the other end portion of the tubular body 25 are housed, and a guide portion 77 that projects and extends toward the plug connection side with respect to the tubular body 25 is provided. Mutually angularly displaceable around the axis, a discrimination fitting portion 93 corresponding to the type of medical gas is formed at the end portion on the plug connection side, and corresponds to the engagement groove 87 of the tubular body 25. And notches 81 and 82 that partially extend in the circumferential direction.
The mounting member 24 in which fitting holes 91a and 91b cut out in the circumferential direction are formed, and (k) the engaging groove 87 of the tubular body 25 and the notch 8 of the mounting member 24.
1, 82, and a retaining member 83 for retaining the mounting member 24, and (l) a fitting portion for discriminating the mounting member 24, which is provided so as to project from the end face of the mounting member 24 facing the base body 41. A discriminating protrusion 79 that fits into the discriminating mating recess 80 corresponding to the type of medical gas represented by 93; Locking members 16a, 16b having both ends projecting outward from the outer peripheral surface of the guide portion 77 perpendicular to the axis.
(N) Guide holes 96a, 9 into which the guide portion 77 of the mounting member 24 fits and is displaceable along the axis, and the both ends of the locking members 16a, 16b are fitted and guided.
6b; 97a, 97b are formed, and these guide holes are
Operation guide members 14 and 26 that are inclined in a direction away from the axis toward the plug connection side; and (o) a third spring 15 that applies a spring force to the plug connection side to the operation guide members 14 and 26, (P) In the connection plug 5, an annular locking groove 99 for locking the locking members 16a and 16b is formed inward of the tapered tip portion 5a in the longitudinal direction, and can be inserted into the mounting member 24. At the time of this insertion, the tip portion 5a is inserted through the second valve hole 55 to separate the second valve body 59 from the second valve seat 58 against the spring force of the second spring 64, and the locking groove is formed. Discrimination protrusion 94 formed so as to project from the inner side in the longitudinal direction to the outer side than 99.
Is a medical outlet connection mechanism including a connection plug 5 that is fitted to the determination fitting portion 93 corresponding to the type of medical gas.

[0006]

[0007]

[0008]

[0009]

According to the present invention, when the operation guide members 14, 26 are pressed against the spring force of the third spring 15, the guide hole 96 is formed.
a, 96b; 97a, 97b are locking members 16a, 16
Both ends of b are displaced in the direction away from the axis to disengage from the engagement groove 99 of the connection plug 5, thereby disengaging the engagement member inserted in the connection port from the engagement groove.
The locked state of the connection plug can be released. When the connection plug is inserted into the connection port, the connection plug pushes the locking member outward from the vent hole against the elastic force, and the elastic force again fits the locking groove into the locking groove. It locks in and locks. In this way, the connection plug can be locked by inserting it into the connection port, and by pressing the operation member, the connection plug or the device can be released from the locked state and easily pulled out. . Since the free end of the main body is provided with the operation member and the connection port in this manner, the operation member can be pressed simultaneously while holding the connection plug inserted in the connection port with one hand, and the connection can be made. It is possible to easily attach or remove the plug.

According to the present invention, by screwing the mounting member to the base portion on which the first valve body is provided, the first valve body can be pressed by the projection to be in the valve open state. The tubular body is attached to the attachment member in a state in which it is retained. Since this cylinder allows rotation of the mounting member around the axis, when mounting the mounting member to the base, only the mounting member is rotated and screwed without rotating the cylinder. can do. A fitting groove is formed in this cylindrical body, and the locking member that is displaced by the operation of the operating member is in a state of protruding into the ventilation hole along the fitting groove and in a state of being retracted from the ventilation hole to the outside. Displaced to and. The vicinity of both ends of this locking member is fitted in the guide hole of the guide member. The guide hole is formed so as to be inclined in a direction away from one plane including the axis as it approaches the axial end of the guide member. Therefore, according to the displacement of the operation member, the operation member can be displaced along the guide hole from the position protruding into the ventilation hole to the position retracted outward. In particular, since the first valve body is provided in the base portion, even if medical gas is supplied into the vent hole, the gas is not likely to be released to the atmosphere through the vent hole, and the mounting is performed. The valve can be opened only after the member is screwed. As a result, it is not necessary to operate the main valve or the like provided at a distant position, and maintenance and inspection work and repair work can be performed easily and smoothly.

The cylindrical body 25 is provided with a filter made of a porous material. Since this filter is formed in a bottomed tubular shape, it is possible to increase the contact area with which the medical gas pressure-fed from the upstream side in the supply direction comes into contact, and thereby the downstream side in the supply direction relative to the filter. Pressure loss can be reduced.

In the present invention, in particular, during assembly, the mounting member 24 corresponding to the type of medical gas of the base portion 23 should be mounted without error with the tubular body 25 mounted on the base portion 23 (a ) A combination of the determination fitting recess 80 and the determination protrusion 79, and (b) the determination fitting portion 93 and the determination protrusion 94.
It is important that this is achieved by the combination of Further, in the present invention, when the filter 65 that is in the open state by pressing the first valve body 22 by the protrusion 68 is removed for maintenance, the first valve body 22 is pressed by the first compression spring 21 and the first valve is opened. By closing the hole 46, there is no waste of medical gas,
In addition, maintenance work is easy.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing the overall appearance of an embodiment of the present invention. In a medical facility such as a hospital, a plurality of (4 in this embodiment) outlets 2 are provided in a casing 1 buried in a wall or the like, and each outlet 2 is provided with a conduit 3 extending from a pressure vessel, Medical gases such as oxygen, air, laughter (nitrous oxide), etc. are supplied individually. Further, any one of the outlets 2 is connected to a suction source via a conduit 3. A connection plug 5 is detachably connected to the connection port 4 of each outlet 2 in accordance with the type of gas, and an annular operating member 14 slightly protruding from a mounting panel 6 to which each outlet 2 is mounted. By pressing the button, the connection plug 5 can be released from the locked state and pulled out. A flexible tube 7 whose one end is connected to a medical device or the like is connected to this connecting plug.
The other end of is connected.

FIG. 2 is an enlarged sectional view taken along the section line II-II in FIG. The outlet 2 basically has a main body 11 having a vent hole 10 that connects the supply port 10a to which the medical gas sent under pressure is supplied and the connection port 4 to each other.
And a predetermined first position P1 on the free end 12 of the main body 11.
And a second position P2 closer to the base end portion 13 than the first position P1.
An operation member 14 displaceably provided in the operation member 1 and the operation member 1.
The compression spring 15 that biases the spring 4 from the second position P2 toward the first position P1 and the operation member 14 elastically protrudes into the ventilation hole 10 when the operation member 14 is arranged at the first position P1. A pair of locking members 16a that are retracted outward in the radial direction from the vent hole 10 by displacing the operating member 14 from the first position P1 to the second position P2 against the spring force of the spring 15 to displace it. , 16b.

The main body 11 has a base portion 23 provided with a first valve body 22 which is biased by a compression coil spring 21 in a direction of closing the vent hole 10, and a substantially tubular shape screwed to the base portion 23. Of the mounting member 24, the tubular body 25 that is prevented from being pulled out while allowing the rotation of the mounting member 24 around the axis line, and the first body along the axis line in the state where the tubular body 25 is prevented from rotating around the axis line. It has an annular guide member 26 which is displaceably provided corresponding to the position P1 and the second position P2.

The base portion 23 is fixed to a supporting member 28 by a bolt 27, and the supporting member 28 is attached to the mounting panel 6 by a mounting bolt 29. The mounting piece 30 is fixed to the inside of the casing 1 by welding or the like so as to project inwardly, and an adjusting bolt 32 which is loosely inserted into the free hole 31 of the support member 28 is screwed into the mounting piece 30. Further, the tip end portion of the adjusting bolt 33 screwed to the support member 28 abuts and presses the mounting piece 30, and these bolts 32, 33 are pressed.
By the operation member 14 arranged at the first position P1.
It is possible to adjust the protrusion amount D1 between the end surface 34 and the surface 35 of the mounting panel 6. When the operation member 14 is pressed and displaced from the first position P1 to the second position P2, the end surface 34 of the operation member 14 and the surface 35 of the mounting panel 6 are set to be substantially in the same plane. It The protrusion amount D1 of the operation member 14 is selected to be, for example, about 5 to 7 mm.

FIG. 3 is an exploded perspective view of the base portion 23. The base portion 23 includes a large-diameter portion 41 having a right cylindrical shape, a small-diameter portion 42 integrally formed coaxially with the large-diameter portion 41, and a small-diameter portion 42.
And a valve hole member 44 screwed into the inner screw 43 formed in the. In the large-diameter portion 41, a valve chamber 45 which forms a part of the vent hole 10 and accommodates the first valve body 22 is formed. A valve hole 46 communicating with the valve chamber 45 is formed in the valve hole member 44. The valve hole 46 is formed in a hexagonal shape so that a hexagonal wrench or the like can be engaged therewith. In a state where the valve hole member 44 is screwed into the inner screw 43 and screwed to the small diameter portion 42, the first valve body 22 faces the valve chamber 45 and expands in diameter to form a truncated cone. The valve is seated on the valve seat 47 and is biased by the compression coil spring 21. Therefore, the first valve body 22 is kept in a state of closing the valve chamber 45 while facing the outside through the valve hole 46. An inner thread 49 with which the tubular body 24 is screwed is formed on the small-diameter portion 42.

FIG. 4 is an exploded perspective view showing the cylindrical body 25 and the structure related thereto. An inner screw 51 and an outer screw 52 are formed at one end of the tubular body 25 in the axial direction, and a storage hole 53 in which the inner screw 51 is formed has flexibility and elasticity such as rubber. A ring-shaped valve hole member 56 containing a ring-shaped packing 54 made of a material and having a valve hole 55.
And a cylindrical nut 70 via a filter 65 described later.
The second valve body 59 is in contact with the frustoconical receiving surface 58 of the valve seat 57 that is prevented from being pulled out by the valve hole member 56 and projects toward the upstream side in the medical gas supply direction.

The second valve body 59 is a metallic valve body 6
An annular contact portion 62 is formed from one axial end portion of 0 through a pair of arms 61, and the valve body 60 has an annular seal member 63 made of a material having elasticity and flexibility such as rubber. Is fitted. Such a second valve body 59 is
The compression coil spring 64 biases the vent hole 10 in the direction of closing the vent hole 10, that is, right and left in FIG.
Elastically contacts the receiving surface 58 of the valve seat 57. The second valve body 59 and the spring 64 as described above are housed in the filter 65.

The filter 65 is made of, for example, a porous material obtained by sintering metal powder, and has a cylindrical portion 66 having a right cylindrical shape, a bottom portion 67 that closes one axial end portion of the cylindrical portion 66, and a portion protruding outward from the bottom portion 67. And the cylindrical portion 66.
And a flange 69 formed at the other end in the axial direction of. The tubular portion 66, the bottom portion 67, the protrusion 68 and the flange 69 are integrally formed. The flange 69 of the filter 65 is pressed by a cylindrical nut 70 screwed to the inner screw 51 of the cylindrical body 25 and is prevented from coming off.
The filter 6 prevented from being pulled out by such a nut 70
The projection 68 of No. 5 projects axially outward from the nut 70 and the tubular body 25, and when the tubular body 25 is screwed into the small diameter portion 42 of the base portion 23, the projection 68 attaches the first valve body 22. The valve can be opened by pressing. Since the valve 2 can be opened when the outlet 2 is attached in this manner, it is not necessary to open and close the main valve, and maintenance and repair work can be performed efficiently. Even if the first valve body 22 is in the open state, the vent hole 10 is blocked by the second valve body 59, and there is no risk of leaking medical gas. Further, the outer peripheral surface of the cylindrical portion 66 and the inner peripheral surface of the nut 70 are separated from each other with a gap δ over the entire circumference in the circumferential direction, and since the filter 65 is formed in a bottomed cylindrical shape, for example, a disk shape. The surface area can be made larger than that formed in the above, and the passage area of the medical gas supplied thereby can be made large, and the pressure loss can be reduced.

FIG. 5 is a longitudinal sectional view of the tubular body 25, and FIG. 6 is a side view taken along the section line VI-VI of FIG. A central hole 71 that communicates with the storage hole 53 is formed in the cylindrical body 25, and a hexagonal hole 72 that is continuous with one end of the central hole 71 in the axial direction and into which a hexagonal wrench or the like is engaged is formed. Thus, the hexagon wrench can be inserted from the connection port 4 and the tubular body 25 can be screwed to the base portion 23.

FIG. 7 is an exploded perspective view showing the mounting member 24 and the structure related thereto. The mounting member 24 includes a fitting portion 75 in which the tubular body 25 is rotatably housed around its axis and a small diameter portion 42 of the base portion 23 is fitted, and a spring receiving portion having a diameter smaller than that of the fitting portion 75. 76 and a straight cylindrical guide portion 77 having a diameter smaller than that of the spring receiving portion 76. A pair of discriminating projections 79 extending along the axial direction are formed on an end surface 78 of the fitting portion 75 perpendicular to the axial line at intervals corresponding to the type of medical gas. Each protrusion 79
The base 23 is fitted into a determination fitting recess 80 (see FIG. 2) formed at intervals corresponding to the type of medical gas. When the protrusion 79 does not fit in the recess 80, the base portion 23
It can be easily recognized that the gas types of the mounting member 24 and the mounting member 24 do not match.

FIG. 8 is a vertical sectional view of the mounting member 24, FIG. 9 is a sectional view taken along the line IX-IX of FIG. 8 taken along the axis, and FIG. 10 is a sectional view of the mounting member 24 shown in FIG. FIG. 8 is a sectional view perpendicular to the axis, showing a state in which a retaining member 83 is attached. The guide part 77 has a pair of notches 81, 82 extending in the circumferential direction.
Is formed. The notches 81 and 82 are roughly C-shaped.
A character-shaped retaining member 83 is fitted. This retaining member 8
3 has a pair of engaging portions 84 and 85, and each engaging portion 84,
85 is connected by the connecting portion 86. In such a state that the retaining member 83 is fitted into the notches 81 and 82, the engaging portions 84 and 85 are formed on the cylindrical body 24 inserted in the mounting member 24 over the entire circumference in the circumferential direction. The engaging groove 8
It fits in 7 and is prevented from coming off. Each of the end surfaces 88, 89, 90 of the retaining member 83 has the retaining member 83 in the notch 8
It is formed by bending so as to have an imaginary circle along the outer peripheral surface of the guide portion 77 in a state of being inserted into the insides of the guides 1, 82. As shown in FIG. 11, a pair of fitting holes 91a and 91b, which are notched in the circumferential direction, include the axis of the guide portion 77 on the downstream side of the guide portion 77 in the supply direction A from the notches 81 and 82. It is formed symmetrically with respect to one plane. These fitting holes 91
a and 91b communicate with the central hole 77a from the outer peripheral surface, and the pair of locking members 16a and 16b are fitted therein,
Both ends of each locking member 16a, 16b in the longitudinal direction are guide portions 7.
It projects outward from the outer peripheral surface of 7.

At the free end 12 on the downstream side of the guide portion 77 in the supply direction A, as shown in FIG. 12, an annular gas discrimination fitting groove 93 having a diameter corresponding to the type of medical gas is provided.
Is formed. In this groove 93, an annular gas discrimination fitting projection 94 of the connection plug 5 corresponding to the same type of medical gas is used.
(Refer to FIG. 1). In this way, the fitting groove 93 and the fitting projection 94 are paired and formed in association with each type of medical gas, whereby it is possible to reliably prevent erroneous mounting of the connection plug. The guide member 26 is coaxially attached to the guide portion 77. Mounting member 2
As shown in FIG. 13, a pair of discrimination projections 79 are provided at the other end of the axial direction 4 of the disc in the circumferential direction at different positions for each type of gas.

FIG. 14 is a perspective view of the guide member 26, FIG. 15 is a front view of the guide member 26 as seen from one of the guide holes 97a and 97b, and FIG. 16 is a view of the guide groove 26 shown in FIG. It is a longitudinal cross-sectional view with the front side omitted. The guide member 26 is formed with a pair of guide holes 96a, 96b; 97a, 97b that are inclined with respect to one plane including the axis of the guide member 26 so as to separate from each other toward one end in the axial direction. In addition, the guide member 26 has 180
A pair of elongated holes 98a, 9 extending in the axial direction at intervals
8b are formed respectively.

Guide holes 96a, 96b; 97a, 97b
Each end of the locking members 16a and 16b fitted in the fitting holes 91a and 91b of the guide portion 77 is fitted and guided in the guide. Therefore, as described above, the guide member 2
When the operating member 14 fixed to 6 is pressed to be placed at the second position P2, the guide member 26 is also displaced along the axial direction toward the base portion 23, and the guide holes 96a, 9 are provided.
6b; the locking members 16a, 16b in 97a, 97b are guided and displaced in the directions away from each other, whereby the locking members 16a, 16b are retracted radially outward from the ventilation hole 10 and inserted into the connection port 4 The plug 5 is disengaged from the locking groove 99. In this way, the locked state of the connection plug 5 is released. As is clear from FIG. 15, the guide holes 96a, 96b; 97a, 97b are separated from the axial line extending in the left-right direction toward the plug connection side (right side of FIG. 2, FIG. 15). Is shown in the upper part of FIG.
b and 97b are inclined downward.

Further, the cylindrical portion 7 is provided in the elongated holes 98a and 98b.
The retaining bolts 101a and 101b screwed to the screw 4 are fitted therein, thereby restricting the displacement of the guide member 26 in the axial direction and preventing the rotation around the axis. The lengths of the long holes 98a and 98b in the longitudinal direction are set corresponding to the protrusion amount D1.

Referring again to FIG. 7, each locking member 16a,
16b has guide surfaces 102a and 102b that are inclined in the direction in which they are separated from each other as they become downstream in the supply direction A. By forming the guide surfaces 102a and 102b, the locking members 16a and 16b can be displaced in the directions away from each other along the truncated conical guide surface 5a of the plug 5 inserted into the connection port 4. You can

As another embodiment of the present invention, as shown in FIG. 17, the outlet for supplying air is
The end faces of the mounting member 24 facing the base portion 23 may be provided with discrimination protrusions 105a and 105b at different angles with respect to a plane 104 passing through the central axis of the mounting member 24. Further, the outlet mounting member to which laughter is supplied is provided. In 24,
As shown in FIG. 18, the protrusions 106 are formed at different angles.
a, 106b may be provided, and the attachment member of the outlet connected to the suction source may be located at different positions in the circumferential direction as shown in FIG.
You may make it form 07b.

[0030]

According to the present invention, since the operating member is provided in the vicinity of the connection port formed at the free end portion of the main body, the connection plug or instrument attached to the connection port can be mounted, for example, with one hand. The operation member can be pressed in the state of being gripped with, whereby the connection plug can be easily removed and the operability can be improved.

According to the present invention, the main body is provided with the first valve body, the mounting member screwed to the main body is provided with the second valve body, and the projection is provided on the mounting member. Since the valve body of No. 1 can be pressed to open the valve,
For example, it is possible to easily perform work such as maintenance, inspection and repair without performing opening / closing operations of the main valve and the like, and it is possible to improve workability.

Further, according to the present invention, since the mounting member is provided with the bottomed cylindrical filter, the pressure loss of the medical gas passing through the filter can be reduced as much as possible.

Further, according to the present invention, the mounting member 24 corresponding to the type of medical gas can be mounted on the base portion 23 without error, and the assembling work can be performed without error. Further, according to the present invention, when the filter 65 is removed, the first
The function of the valve body 22 prevents the medical gas from leaking, the medical gas is not wasted, and the maintenance work is easy.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall appearance of an embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing an outlet 2.

FIG. 3 is an exploded perspective view showing a base portion 23 and a configuration related thereto.

FIG. 4 is an exploded perspective view showing a tubular body 25 and a configuration related thereto.

FIG. 5 is a vertical cross-sectional view of a tubular body 25.

6 is a side view of the tubular body 25 taken along the section line VI-VI in FIG.

FIG. 7 is an exploded perspective view showing a mounting member 24 and a configuration related thereto.

FIG. 8 is a vertical sectional view of a mounting member 24.

9 is a sectional view taken along the section line IX-IX in FIG.

10 is a cross-sectional view showing a state in which a retaining member 83 is attached in FIG.

11 is a cross-sectional view taken along the section line XI-XI in FIG.

FIG. 12 is a side view of the mounting member 24 seen from the right side of FIG.

13 is a side view of the mounting member 24 seen from the left side of FIG.

14 is a perspective view of a guide member 26. FIG.

15 is a front view of a guide member 26. FIG.

16 is a cross-sectional view in which the front side of the guide member 26 shown in FIG. 15 is cut away.

FIG. 17 is a side view of a mounting member 24a according to another embodiment of the present invention.

FIG. 18 is a mounting member 24b according to still another embodiment of the present invention.
FIG.

FIG. 19 is a mounting member 24c according to still another embodiment of the present invention.
FIG.

FIG. 20 is a perspective view of the prior art.

[Explanation of symbols]

 2 Outlet 4 Connection port 5 Connection plug 6 Mounting panel 7 Operation member 10 Vent hole 11 Main body 12 Free end portion 13 Base end portion 16a, 16b Locking member 22 First valve body 23 Base portion 24 Mounting member 25 Cylindrical body 26 Guide member 59 Second valve body 79 Discrimination projection 80 Discrimination recess 96a, 96b; 97a, 97b Guide hole 98a, 98b Long hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiyuki Takemoto 3-2 Takazukadai, Nishi-ku, Kobe 16 Kawashige Disaster Prevention Industry Co., Ltd. Kobe Headquarters / Headquarters Factory (56) References )

Claims (1)

(57) [Claims] 1. (a) a base body 41 having a base portion 23, which has an axis along the plug connection direction and in which a first valve chamber 45 to which medical gas is supplied is formed; An inner screw 49 is engraved on the plug connecting side of the first valve chamber 45 along the axis, and has a cylindrical small diameter portion 42 having a diameter smaller than that of the base main body 41; In the base portion 2, one or a plurality of determination fitting recesses 80 corresponding to the type of medical gas are formed at a position in the circumferential direction projecting outward in the radial direction with respect to the small diameter portion.
3, and (b) a first valve seat 47 having a first valve hole 46 formed facing the first valve chamber 45 and attached to the base portion 23; and (c) a first valve seat member 44. A first valve body 22 provided in the valve chamber 45 and facing the first valve hole 46; and (d) a first valve body 22 provided in the first valve chamber 45
The first spring 21 that applies a spring force in the direction of seating on the valve seat 47
(E) In the tubular body 25, one end portion in the axial direction is screwed into the internal thread 49 of the small diameter portion 42 in the small diameter portion 42, and the other end portion in the axial direction of the tubular body 25. Has a tubular body 25 projecting toward the plug connection side with respect to the small-diameter portion 42 and having an engagement groove 87 formed over the entire circumference in the circumferential direction, and (f) the tubular portion 66 and the bottom portion 67. A bottomed tubular filter 65 having, wherein the base end portion of the filter 65, which extends along the plug connection direction and is open on the plug connection side, is
It is fixed to the one end portion inside the tubular body 25, and the outer peripheral surface of the tubular portion 66 and the inner peripheral surface of the tubular body 25 are separated by a gap δ, and the bottom portion of the filter 65 on the side opposite to the plug connection side. A projection 68 is provided on the side of 67 opposite to the plug connection side, and the projection 68 is inserted through the first valve hole 46 and the first valve body 22.
A filter 65 capable of opening the valve by pressing the valve so as to separate from the first valve seat 47 against the spring force of the first compression spring 21, and (g) the filter 65 in the tubular body 25. A second valve hole member 56 having a second valve seat 58 fixed to the plug connection side and having a second valve hole 55 facing the filter 65 side; and (h) a filter more than the second valve hole member 56. A second valve body 59 which is arranged closer to 65 and faces the second valve hole 55; and (i) one end abuts on the filter 65 and the other end abuts on the second valve body 59. A second spring 64 that applies a spring force in the direction of seating on the second valve seat 58; and (j) the attachment member 24 extending along the axis, the small-diameter portion 42 of the base 23, and the cylindrical body 25 A guide portion 7 that accommodates the other end portion and extends so as to project toward the plug connection side from the tubular body 25.
7, and the other end of the tubular body 25 is angularly displaceable relative to each other around the axis, and the end portion on the plug connection side has a determination fitting portion 93 corresponding to the type of medical gas. Is formed, and notches 81, 82 that partially extend in the circumferential direction are formed corresponding to the engagement grooves 87 of the tubular body 25. The guide portion 77 has fitting holes 91a, 9 notched in the circumferential direction.
1b formed mounting member 24, (k) engagement groove 87 of tubular body 25 and notch 8 of mounting member 24
1, 82, and a retaining member 83 for retaining the mounting member 24, and (l) a fitting portion for discriminating the mounting member 24, which is provided so as to project from the end face of the mounting member 24 facing the base body 41. A discriminating protrusion 79 that fits into the discriminating mating recess 80 corresponding to the type of medical gas represented by 93, and (m) fits into the mating holes 91a and 91b of the mounting member 24 and extends elongatedly. Locking members 16a, 16b having both ends projecting outward from the outer peripheral surface of the guide portion 77 perpendicular to the axis.
(N) Guide holes 96a, 9 into which the guide portion 77 of the mounting member 24 fits and is displaceable along the axis, and the both ends of the locking members 16a, 16b are fitted and guided.
6b; 97a, 97b are formed, and these guide holes are
Operation guide members 14 and 26 that are inclined in a direction away from the axis toward the plug connection side; and (o) a third spring 15 that applies a spring force to the plug connection side to the operation guide members 14 and 26, (P) In the connecting plug 5, the locking member 1 is provided more inward in the longitudinal direction than the tapered tip portion 5a.
An annular locking groove 99 for locking 6a and 16b is formed and can be inserted into the mounting member 24. At the time of this insertion, the tip portion 5a is inserted through the second valve hole 55 and the second valve body 59 is inserted. Second
A discriminating projection 94 formed apart from the second valve seat 58 against the spring force of the spring 64 and projecting outward from the inner side in the longitudinal direction with respect to the locking groove 99 is provided for the medical gas. A connection mechanism for a medical outlet, including a connection plug 5 that fits into a determination fitting portion 93 corresponding to a type.