JPH08285099A - Multi-way cock - Google Patents

Abstract

PURPOSE: To easily confirm communication with a desired branch pipe without the generation of liquid leakage at the sliding faces of a hollow cylindrical body and a cylinder body by providing protruding and recessed engaging parts, engaged with each other, at the internal wall of the skirt part of a cap and the external wall of the upper part wall of the hollow cylindrical body. CONSTITUTION: A lever 11 is rotated, and in association with this rotation, a cylinder body 5 extended from the internal wall of the top face 3 of a cap 1 is rotated sliding in the liquid-tight state along the inner peripheral surface of a cylindrical body 2. Protruding parts 8 formed at the internal wall of the skirt part 4 of the cap 1 are then engaged with recessed parts 9 formed at the external wall of the cylindrical body 2. An opening passage provided at the cylinder body 5 is thereby communicated with a desired branch pipe 10 to make liquid flow. An operator can confirm the communicated state of the opening passage 7 of the cylinder body 5 and the branch pipe 10 by load difference generated at the rotating time of the cap by the engagement between the protruding parts 8 and recessed parts 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiway cock, and more specifically, it can be confirmed by an engagement between a convex portion and a concave portion that an operator can communicate with a desired branch pipe. It is a stopcock.

[0002]

2. Description of the Related Art Conventionally, a three-way stopcock has been used to switch the flow path of a circuit for transfusion into a vein, infusion of glucose, physiological saline, etc., but rotational positioning of a valve element provided in a stopcock body. The stopper for use may be deformed as the frequency of use increases, and the liquid may leak or be damaged. Japanese Patent Application Laid-Open No. 55-6043 discloses a three-way stopcock having fine irregularities formed on the sliding surface as a means for preventing liquid leakage on the sliding surface of the three-way stopcock. However, such minute recesses on the sliding surface of the three-way stopcock contain sliding oil such as silicone to make the sliding surface liquid-tight and thus provide sliding activity, and the sliding oil is mixed with blood and infusion fluid. There was a problem to do.

In addition, as a multiway stopcock having a stopper for rotationally positioning the valve body provided in the stopcock body, it is actually fair.
JP-A-29619 discloses a multi-way stopcock that engages a main body having a plurality of branch pipes separated by a predetermined angle and a valve body rotatably fitted to the main body and having a plurality of passages so that the branch pipes are in communication with each other. Describes a multi-way stopcock that confirms communication between branch pipes through load variation when the concave portion and the convex portion are engaged or separated. The invention will be described with reference to the front cross-sectional view of FIG. 3, which is a multiway stopcock in which a cylindrical valve body 15 is fitted to an inner wall of a cylindrical portion 16 having a plurality of branch pipes 22, and a lever 21 is rotated. As a result, the valve body 15 rotates in a liquid-tight manner on the inner circumference of the cylindrical portion 16. The valve body 15 is provided with a small-diameter portion 17 having a smaller diameter than the valve body 15, and the small-diameter portion 17 has a convex portion 18 and a concave portion 19 formed on the inner wall of the cylindrical portion 16 and the outer wall of the valve body 15. The passage 20 of the valve body 15 communicates with the branch pipe 22 of the cylindrical portion 16 by the engagement of the convex portion 18 and the concave portion 19.

[0004]

However, in such a multiway cock, the engaging positions of the convex portion 18 and the concave portion 19 are formed at the same sliding surface positions as the valve body 15 and the cylindrical portion 16 which are slidably rotated in a liquid-tight manner. Therefore, the convex portion 18 is likely to be distorted between the outer wall of the valve body 15 or the inner wall of the cylindrical portion 16 during the rotation operation by the lever 21, and liquid leakage between the cylindrical portion 16 and the valve body 15 may occur. I was worried about this. An object of the present invention is to provide a multiway stopcock capable of easily confirming that fluid communication does not occur on a sliding surface between cylindrical bodies and that a desired branch pipe can be communicated. Is to provide.

[0005]

That is, according to the present invention, a cylindrical body having at least two opening passages extending in the lateral direction extending from the inner wall of the top surface of the cap, and the inner wall of the cylindrical body is fitted in a liquid-tight manner. And a multi-way stopcock comprising a cylindrical body provided with at least two branch pipes on its outer periphery, the convex wall engaging with the inner wall of the skirt portion of the cap and the outer wall of the upper side wall of the cylinder. It is a multiway stopcock provided with a concave and a convex engaging portion. Further, the present invention is the multi-way cock, wherein the multi-way cock is provided with a lever extending outward from one end of the cap.

[0006]

The multi-way stopcock will be described with reference to FIG. 1. When the cap 1 is rotated, the cylindrical body 5 extending from the inner wall of the top surface 3 of the cap 1 is liquid-tightly sealed on the inner peripheral surface of the cylindrical body 2 with the rotation thereof. To slide and rotate. Then, as shown in FIG. 2, the convex portion 8 formed on the inner wall of the skirt portion 4 of the cap 1 engages with the concave portion 9 formed on the outer wall of the cylindrical body 2. Thereby, the branch pipe desired by the opening passage 7 provided in the cylindrical body 5
The liquid circulates in communication with each other.

[0007]

EXAMPLES An example of the present invention will be described below with reference to examples. FIG.
FIG. 2 is a front sectional view showing an example of the multi-way cock of the present invention, FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1, and FIG. 3 is a front cross-sectional view of a conventional multi-way cock. In the figure, 1 is a cap, 2 is a cylindrical body, 3 is a top surface of the cap, 4 is a skirt portion of the cap, 5 is a cylindrical body, 6 is an engaging portion, 7 is an opening passage, 8 is a convex portion, 9 is a The concave portion, 10 indicates a branch portion.

FIG. 1 is a front sectional view showing an example of the multiway cock of the present invention. A cylindrical body 5 extending from an inner wall of a top surface 3 of a cap 1 is rotated by a lever 11 to rotate the cylindrical body 5 with an outer wall thereof. It is a multi-way cock that slides on the inner wall of the body 2 and connects the open passage 7 of the columnar body 5 to the branch pipe 10 of the cylinder 2.
The cap 1 includes a top surface 3 and a skirt portion 4, and the top surface 3
A columnar body 5 extends on the inner wall of the above, and a lever 11 is provided at one end of the side wall of the top surface 3. The cylindrical body 5 is formed with at least two laterally extending open passages 7. The outer wall of the cylindrical body 5 is fitted to the inner wall of the cylindrical body 2, and the cylindrical body 5 is slidably rotated by rotating the lever 11.

The cylindrical body 2 has at least two branch pipes 10 projecting outward, and is adapted to communicate with the opening passage 7 of the cylindrical body 5 by rotating the cylindrical body 5. The upper end opening 12 of the cylindrical body 2 is in contact with the inner wall of the top surface 3 of the cap 1, and there is a gap between the outer wall of the upper side wall of the cylindrical body 2 and the inner wall of the skirt portion 4 of the cap 1 to engage the engaging portion. 6 is formed. As shown in FIG. 2, the engaging portion 6 has a top surface 3 of the cap 1.
The inner wall and the outer wall of the upper side wall of the cylindrical body 2 are formed with the protrusions 8 and the recesses 9, and the protrusions 8 and the recesses 9 engage with each other so that the opening passage 7 and the branch pipe 10 communicate with each other. Has been confirmed. That is, the difference in load between when the convex portion 8 and the concave portion 9 are engaged and when the convex portion 8 comes into contact with the inner wall of the top surface 3 of the cap 1 or the surface of the outer wall of the upper side wall of the cylindrical body 2 to rotate. The operator can confirm that the open passage 7 and the branch pipe 10 are in communication with each other. The branch pipes 10 are provided at predetermined intervals, and the opening passages 7 are also provided at predetermined intervals corresponding to the intervals.
The lower end of the cylindrical body 2 may be closed or opened, but when it is opened, it is preferable to provide a lid to close the bottom surface of the cylindrical body 9.

To operate the multiway stopcock of the present invention, a lever 11
By rotating, the cylindrical body 5 extending from the inner wall of the top surface 3 of the cap 1 slides in a liquid-tight manner on the inner peripheral surface of the cylindrical body 2 and rotates with the rotation. Then, as shown in FIG. 2, the convex portion 8 formed on the inner wall of the skirt portion 4 of the cap 1
Engage with the recess 9 formed in the outer wall of the cylindrical body 2. As a result, the opening passages 7 provided in the columnar body 5 communicate with the desired branch pipes 10 to allow the liquid to flow. Convex portion 8 and concave portion 9
The operator confirms that the opening passage 7 of the cylindrical body 5 communicates with the branch pipe 10 due to the difference in the load when the cap rotates due to the engagement of and.

[0011]

According to the multi-way cock of the present invention, the position where the convex portion and the concave portion are engaged is between the inner wall of the skirt portion of the cap and the outer wall of the side wall of the cylindrical body, and the cylindrical body and the cylindrical body slide. Since it is arranged at a position different from the moving surface, there is no distortion in the sliding surface between the cylindrical body and the cylindrical body, and liquid leakage does not occur on the sliding surface.
Then, it can be easily confirmed that the opening passage of the columnar body and the branch pipe can communicate with each other.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an example of a multiway cock of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a front sectional view of a conventional multiway cock.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cap 2 Cylindrical body 3 Cap top surface portion 4 Cap skirt portion 5 Cylindrical body 6 Engagement portion 7 Open passage 8 Convex portion 9 Recessed portion 10 Branch pipe

Claims (2)

[Claims] 1. A columnar body having at least two opening passages extending in a lateral direction extending from an inner wall of a top surface of a cap, an outer wall of the columnar body having an inner wall fitted in a liquid-tight manner, and an outer periphery of the columnar body having at least two branches. A multiway stopcock comprising a cylindrical body provided with a tube, wherein convex and concave engaging portions for engaging with each other on an inner wall of a skirt portion of the cap and an outer wall of an upper side wall of the cylindrical body are provided. This is a multi-way stopcock. 2. A lever extending outward from one end of the cap.
The multidirectional stopcock according to claim 1, further comprising: