JP2508215Y2 - Tube connection device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe body which can be suitably implemented to detachably connect a respiratory face piece and a lung force valve, which require a high degree of safety and operability. Regarding connection device.

[0002]

2. Description of the Related Art A typical prior art is, for example, Japanese Patent Publication No.
8-47184 (JP-A-52-126092). In this prior art, when a U-shaped clip corresponding to the engaging member of the present invention is pressed by a knob corresponding to the operating member of the present invention, a pair of leg portions of the U-shaped clip are displaced in a direction away from each other. Then, the valve as a tubular body is released from the annular groove corresponding to the concave groove of the present invention, and the locked state of the valve is released.

In such a prior art, in order to separate the legs of the U-shaped clip from each other and release the tubular body from the retaining state, the knob must be operated with a relatively large force. However, there is a problem that the operability is poor. In addition, since the connected valve is not detented, there is a problem that the valve is easily angularly displaced while being connected to the face piece, and the air pipe connected to the valve is inadvertently moved. .

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to prevent undesired angular displacement of a connected pipe body and to prevent the pipe body from coming off easily without requiring a large force. It is an object of the present invention to provide a connecting device for a pipe body which is released from the state and can be pulled out.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a pair of legs are formed by bending the tips in directions away from each other.
Each of the engaging members has an engaging member made of a U-shaped elastic material having a connecting portion connecting each leg portion, and an insertion hole into which a tubular body having a groove is inserted. A pair of fitting holes in which the legs partially protrude inward in the radial direction from the inner peripheral surface of the insertion hole and elastically fit, and the fitting holes are located downstream of the fitting holes in the insertion direction of the tubular body. A tubular body that is provided with an anti-rotation projection that projects radially inward from the inner peripheral surface and that fits into a notch formed in the tip of the tubular body, and projects outward from the fitting hole of the tubular body. A pair of pressing members that press each tip along the outer peripheral surface of the tubular body in a direction in which the tips separate from each other, and the pressing members are partially fitted so that the pressing members come close to each other. / A connecting member for a tubular body, comprising: an operating member in which a guide groove extending in a straight line direction for guiding to be separated and displaced is formed.

[0006]

According to the present invention, the tube is formed with the concave groove, and the notch is formed at the tip thereof. When such a tubular body is inserted into the insertion hole, the legs of the engaging member are elastically displaced in the directions away from each other and fit into the concave groove, whereby the tubular body is prevented from coming off. It When the tubular body is thus prevented from coming off, it is possible to prevent the tubular body from being angularly displaced by fitting the anti-rotation projection protruding from the inner peripheral surface of the tubular body into the notch. . Further, when the operation member is pressed, the pair of pressing members are displaced in the directions away from each other, and the tip portions of the engaging members partially protruding from the outer peripheral surface along the outer peripheral surface of the tubular body are separated from each other. In this way, each leg of the engaging member is released from the recessed groove of the inserted tube to release the retaining state, and the tube can be easily pulled out from the insertion hole. Since the pair of pressing members are guided so as to be able to move toward and away from each other along the guide groove formed in the operating member, when the operating members are pressed, the pressing members are mutually displaced along the outer peripheral surface of the cylindrical body. It is possible to displace it in the direction away from, and thereby to reduce the pressing force of the operating member and improve the operability.

[0007]

1 is a side view showing a connecting device 1 according to an embodiment of the present invention and a structure related thereto. A connecting device 1 is provided on the face piece 3 of the open-type respirator used for rescue activities.
Is attached to the connecting device 1. The lung force valve 5 is detachably connected to the connecting device 1 connected to the attaching part 4. The lung force valve 5 is supplied with decompressed breathing gas in a pressure vessel filled with breathing gas such as air,
It can be supplied into the face piece 3 by suction of the wearer of the face piece 3. Exhalation of the wearer is discharged from the exhalation valve 6.

Since such an open-type respirator is used for rescue activities such as a fire, it is necessary to reliably prevent the lung force valve 5 from easily rotating and coming off during the rescue activities. Moreover, when the lung valve 5 rotates, the air guide pipe or the like connected to the pipe joint 7 may undesirably move, which may hinder the rescue operation. Moreover, it is necessary to detach the lung force valve 5 from the connecting device 1 and to store it in the predetermined storage case according to the regulation after the rescue operation is completed. It is necessary to pull out the force valve 5 easily and surely.

FIG. 2 is a plan view of the vicinity of the connecting device 1 as seen from above in FIG. 1, and FIG. 3 is a perspective view of the lung force valve 5. The connection device 1 has an operation member 8 for releasing the state in which the lung force valve 5 is retained. By pressing the operating member 8, the connecting portion 9 which is the tubular body of the lung force valve 5 becomes detachable from the connecting device 1. In this state, the lung force valve 5 is grasped and pulled out to facilitate the lung. The force valve 5 can be detached from the connecting device 1. A notch 10 is formed at the tip of the connecting portion 9 in the circumferential direction, for example, over 180 degrees. By forming the notch 10, the engaging portion 11 remains in the connecting portion 9 for about half a circumference. As will be described later, this engaging portion 11 has a rotation stopping function in a state where the lung force valve 5 is connected to the connecting device 1.

FIG. 4 is a sectional view seen from the front side of the connection device 1, and FIG. 5 is a sectional view seen from the right side of FIG. The connection device 1 includes a pair of leg portions 14a and 14b formed by bending the respective tip portions 13a and 13b in directions away from each other.
And a U-shaped metal engaging member 16 having a connecting portion 15 that connects the legs 14a and 14b, and an insertion hole 17 into which the connecting portion 9 of the lung force valve 5 is inserted. Engaging member 1
A pair of fitting holes 18a, 18b in which the respective leg portions 14a, 14b of 6 partially project inward in the radial direction from the inner peripheral surface of the insertion hole 17 and are elastically fitted, and the respective fitting holes 18a, 18a, A tubular body 20 provided with a detent projection 19 that projects radially inward from the inner peripheral surface on the downstream side in the insertion direction A of the connecting portion 9 with respect to 18b and fits into the notch 10 of the connecting portion 9; The tip portions 13a, 13b protruding outward from the fitting holes 18a, 18b of the tubular body 20 are pressed along the outer peripheral surface 21 of the tubular body 20 in a direction in which the tip portions 13a, 13b are separated from each other. The pair of pressing members 23a and 23b and the pressing members 23a and 23b are partially fitted to each other,
and the operating member 8 in which a straight guide groove 24 is formed for guiding the a and 23b so that they can be displaced toward and away from each other.

By pressing the operating member 8, the pressing members 23a and 23b are moved to the reference numeral 26 in FIG.
As shown by a and 26b, the tip end portions 13a and 13b of the engaging member 16 are displaced while moving downward in a direction away from each other.
, Thereby causing each tip 13a, 13b to open in a direction away from each other, as shown by reference numerals 27a, 27b, against the resilient force, thereby causing legs 14a, 14b to
b is displaced radially outward from the inner peripheral surface of the insertion hole 17,
It retreats from the concave groove formed in the connecting portion 9. In this state, the connecting portion 9 can be easily removed from the insertion hole 17.

By thus configuring the pressing members 23a and 23b into two members, the operating member 8
The pressing force at the time of pressing operation is small, and the operability is improved. Further, a rotation preventing projection 19 is formed on the cylindrical body 20, and the connection portion 9 into which the rotation preventing projection 19 is inserted.
The engagement portion 11 engages with the rotation preventing projection 19 to prevent the connection portion 9 from rotating.

[0013]

As described above, according to the present invention, a pair of fitting holes are formed in a cylindrical body, and a U-shaped engaging member is mounted on the cylindrical body. The distal end portions projecting outward from the fitting holes of the engaging member are locked by locking the tubular body to the tubular body in a state of partially projecting radially inward from the inner peripheral surface of the body. When the tubular body is pulled out from the tubular body, the leg portions of the engaging member are removed when the tubular body is released from the tubular body by displacing each of the pressing members in the direction in which they are separated from each other by the pressing operation of. It is not necessary to press the operating member with a large force to displace the tubes in the direction of moving away from each other, and each leg can be easily separated from the groove of the tubular body with a slight force, and the tubular body can be easily moved from the tubular body And it can be reliably removed.
Moreover, since the engaging member is configured such that only a part of each leg portion protrudes inwardly from each fitting hole of the cylindrical body, each leg portion is displaced in the direction in which they are separated from each other due to the displacement of the engaging member or the like. However, there is no risk that the remaining part will protrude inward in the radial direction from the inner peripheral surface of the cylinder to prevent displacement of the tube in the removal direction, and it must be removed securely. Is possible. Further, when connecting the tubular body to the tubular body, each leg of the engaging member can be displaced in a direction in which they are separated from each other with a slight force as described above.
In other words, the engaging member can be configured by a member having a large spring force, and in the state where each leg is fitted in the concave groove of the tubular body, in the direction of pulling out from the tubular body of the tubular body. The displacement can be resisted with a large force, and the reliable connection state can be maintained. Further, since the rotation preventing projection is formed on the cylindrical body and the notch into which the rotation preventing projection is fitted is formed on the tube body, it is possible to reliably prevent the rotation of the tube body. It is possible to reliably prevent the tubular body from rotating carelessly and coming off the tubular body.

[Brief description of drawings]

FIG. 1 is a side view showing a connection device 1 according to an embodiment of the present invention and a configuration related thereto.

FIG. 2 is an enlarged plan view showing the vicinity of the connection device 1. FIG.

FIG. 3 is a perspective view of a pulmonary force valve 5.

FIG. 4 is a cross-sectional view of the connection device 1 viewed from the front side.

5 is a cross-sectional view seen from the right side of FIG.

6 is a pressing member 23a by pressing the operating member 8;
It is a figure for demonstrating operation | movement of 23b and the engaging member 16.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connection device 3 Face body 5 Lung force valve 8 Operating member 9 Connection part 10 Notch 11 Engagement part 13a, 13b Tip part 14a, 14b Leg part 15 Connecting part 16 Engagement member 17 Insertion hole 18a, 18b Fitting hole 19 Around Stop projection 20 Cylindrical body 21 Outer peripheral surface 23a, 23b Pressing member 24 Guide groove

Claims (1)

(57) [Scope of utility model registration request] 1. An engagement made of a U-shaped elastic material having a pair of leg portions formed by bending each tip in a direction away from each other, and a connecting portion connecting the respective leg portions. The member and the insertion hole into which the tubular body having the concave groove is inserted are inserted, and each leg of the engaging member partially protrudes inward in the radial direction from the inner peripheral surface of the insertion hole and is elastic. A pair of fitting holes that fit in
A cylinder provided with a rotation-stopping projection that protrudes radially inward from the inner peripheral surface on the downstream side of each fitting hole in the insertion direction of the pipe body and that fits into a notch formed in the tip end portion of the pipe body. A body, a pair of pressing members for pressing the tip portions protruding outward from the fitting hole of the tubular body in a direction in which the tip portions are separated from each other along the outer peripheral surface of the tubular body, A connecting device for a pipe body, comprising: an operating member in which a member is partially fitted and a guide groove extending in a straight line direction is formed to guide each pressing member so that they can be displaced toward and away from each other.