JP2007092881A - Detachable connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detachable connector capable of connecting, for example, each unit and pipe of an analysis device easily by remote operation, and preventing fluid from staying in the detachable connector. <P>SOLUTION: This detachable connector is composed of a liquid feeding tube 12 having a tapered receiving part 11 in one end part, a tapered recessed part 13 having substantially the same shape as that of the tapered receiving part 11, a socket 16 provided with an insertion passage 14 which communicates with the tapered recessed part 13 and in which the liquid feeding tube 12 is inserted and a screw-fitting part 15 for screw-fitting a plug male part 22 on a fixed side having the liquid feeding tube 21 on the same axis as the insertion passage 14, and the plug male part 22 on the fixed side having the liquid feeding tube 21 on a shaft axis. This detachable connector has a handle part operated by at least one manipulator for remote operation or more at the outer periphery of the socket 16 and a supporting part 18 having the same shaft axis as the liquid feeding tube 12 at the outer periphery of the socket 16, gripped by the manipulator for remote operation, and having circular cross section. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a detachable connector that can connect, for example, each unit and piping of an analyzer by remote control.

Using the fluid connector for connecting and assembling the component units and piping of the analyzer, bring each unit into the box in the radiation control area and assemble it with a remote control device (for example, master-slave manipulator or tong) In some cases, the fluid connector connecting each unit must be attachable / detachable by a remote control device.
On the other hand, when the internal volume of the connector is large relative to the tube and the internal structure becomes complicated, the flow of fluid is disturbed, resulting in fluctuations in measured values, and stagnation occurs, resulting in an increase in fluid replacement time.

Furthermore, when handling a small amount of fluid, it is desirable to reduce the internal volume of the connector and reduce the amount of fluid used.
Currently, there is a proposal of a known one-touch type connector corresponding to a remote control device (Patent Document 1).

Japanese Patent Application Laid-Open No. 07-243572

However, the connector as disclosed in Patent Document 1 has a complicated internal structure and a large internal volume. Therefore, when such a connector is used, flow turbulence and stagnation become problems.
In addition, when the internal structure is complicated or the internal volume is large, the adhesion area of dirt in the fluid also increases, requiring frequent internal cleaning and replacement of parts.

  Therefore, the appearance of a detachable connector that has a simple internal structure, a small internal volume, and that can be used for maintenance operations on remote-controlled devices is desired.

  In view of the above problems, the present invention provides a remote operation connector that can easily attach and detach each unit and piping of an analyzer, for example, by remote operation, and eliminates a dead volume without fluid retention. And

  A first invention of the present invention for solving the above-described problems includes a liquid-feeding tube having a tapered receiving portion at one end, a tapered recessed portion having substantially the same shape as the tapered receiving portion, A socket that includes an insertion passage that communicates with the tapered recess and that inserts a liquid feeding tube; and a screwing portion that screwes a fixed plug male portion having the liquid feeding tube on the same axis as the insertion passage; A fixed plug male part having a liquid feeding tube in the center, and a handle part operated by at least one manipulator on the outer periphery of the socket, and a liquid feeding tube on the outer periphery of the socket And a detachable connector having a support portion having a circular cross section that is gripped by a manipulator.

  According to a second aspect of the present invention, there is provided a liquid-feeding tube having a tapered receiving part at one end, a tapered concave part having substantially the same shape as the tapered receiving part, and communicating with the tapered concave part. A socket having an insertion passage for inserting a plug, and a mounting portion having a locking portion to which a plug male portion having a liquid feeding tube on the same axis as the insertion passage is engaged, and the liquid feeding tube at the shaft center. A detachable connector comprising a plug male portion having a locking claw portion to be locked with a locking portion, and having a pair of handle portions for opening the locking portion on an outer periphery of the socket. It is in.

  According to a third aspect of the present invention, there is provided a liquid-feeding tube having a tapered receiving part at one end, a tapered concave part having substantially the same shape as the tapered receiving part, and a communication with the tapered concave part. A socket having an insertion passage for inserting a plug, and a mounting portion having a locking portion to which a plug male portion having a liquid feeding tube on the same axis as the insertion passage is engaged, and the liquid feeding tube at the shaft center. The plug male part having a latching claw part that latches with the latching part, and is slidable to the rear side of the latching claw part of the plug male part, and is opened to open the latching part of the socket An detachable connector having an opening jig having a protrusion.

  According to a fourth invention, in any one of the first to third inventions, the tip end portion of the plug male portion forms a ring-shaped contact surface on the inner surface of the tapered receiving portion of the socket when connected. It is in the detachable connector characterized by.

  According to a fifth invention, in any one of the first to fourth inventions, the elastic member is elastically deformable between the tapered recess of the socket and the tapered receiving portion of the end of the liquid feeding tube. It is in the detachable connector characterized by interposing.

  A sixth invention is a detachable connector characterized in that, in any one of the first to fifth inventions, the connector is operated by a remote manipulator.

  A seventh invention is the detachable connector for assembling the analyzer according to any one of the first to sixth inventions, wherein the detachable connector is used for assembling the analyzer.

  According to an eighth aspect of the present invention, there is provided a flow injection apparatus characterized in that a liquid-feeding connection portion is connected by any one of the first to seventh connectors.

  According to a ninth aspect of the present invention, there is provided a liquid chromatograph characterized in that the liquid feed connecting portion is connected by any one of the first to seventh attachment / detachment connectors.

  According to the present invention, as a result, when the socket having a simple structure is attached / detached, the attaching / detaching operation can be easily performed even with an artificial hand such as a manipulator for remote operation or a robot.

  In addition, since one end portion of the liquid feeding tube has a tapered receiving portion, it becomes a guide when the socket and the plug male are fitted, and the tip end portion of the tapered plug male is surely attached. Since the airtightness is good, it is possible to prevent the occurrence of a gap.

  Hereinafter, the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same.

A detachable connector according to Embodiment 1 of the present invention will be described with reference to the drawings.
FIG. 1 is a conceptual diagram (before mounting) illustrating the detachable connector according to the first embodiment.
FIG. 2 is a conceptual diagram (after mounting) of the detachable connector according to the first embodiment.
As shown in FIGS. 1 and 2, the detachable connector 10 </ b> A according to the present embodiment includes a liquid feeding tube 12 having a tapered receiving portion 11 at one end, and a tapered shape substantially the same shape as the tapered receiving portion 11. And a tapered plug male portion 22 having the liquid feed tube 21 on the same axis as the insertion passage 14. A socket 16 having a screwing portion 15 and a plug male portion 22 on the fixed side having a liquid feeding tube 21 at the shaft center. The outer periphery of the socket 16 has at least one (4 in this embodiment). And a handle portion 17 that is operated by a remote operation manipulator, and the same axis as the liquid feeding tube 12 on the outer periphery of the socket 16, and a remote operation manipulator 25. It is made of a circular cross section of the support part 18 to be gripped. Here, the plug male part 22 is shown in white in the figure (hereinafter the same).

  By using the detachable connector of the first embodiment, the support portion 18 is provided on the outer periphery of the rear end of the socket 16 when screwed with the plug male portion 22 on the fixed side. Therefore, as shown in FIG. When the manipulator 25 is used, the portion becomes a support point, and the socket 16 can be securely attached and detached by, for example, an artificial hand.

As a result, when the socket 16 is detached, the support portion 18 is screwed into the plug male portion 22 while being gripped by the manipulator 25 for remote operation, so that the screwing operation is facilitated.
Here, as a device other than the manipulator, for example, a remote operation jig such as a tongue can be used. Although the plug male portion 22 on the fixed side is fixed to the wall, the present invention is not limited to the one fixed to the wall, and may be fixed using a fixing jig ( The same applies hereinafter).

  Further, as shown in FIG. 3, a flange portion 17 a may be provided at the end portion of the handle portion 17. By providing the flange portion 17a, it is possible to prevent falling off when the manipulator 25 for remote operation is hooked and rotated.

  By using the remote operation connector according to the present embodiment, the connector can be easily attached and detached. In addition, since the tapered receiving portion 11 is provided at one end portion of the liquid feeding tube 12, the tip 22a of the plug male portion 22 is securely attached and the sealing performance of both is improved. Will not occur. Here, the liquid feeding tube and the tapered receiving portion 11 can be made of a flexible member such as Teflon (registered trademark), and all connector materials are flexible such as Teflon (registered trademark). However, the present invention is not limited to this as long as it is a material used for a general liquid feeding tube.

Thereby, maintenance operation becomes easy. That is, since there is no gap portion, the fluid does not stay, so that the amount of the sample to be analyzed can be reduced.
For example, when the sample (standard solution) that was flowed immediately before is retained in the flow path, as in the flow injection analysis method, mixing with the sample that flows next may occur, and tailing may be reduced on the chart. According to the above, since retention is prevented, a reduction in tailing is eliminated.

  In addition, since the attachment / detachment operation is screwed into the plug male portion 22 while being gripped by the remote operation manipulator 25, for example, the attachment / detachment operation of the connector in the isolated analysis box is ensured, and the burden on the operator can be reduced. .

A detachable connector according to Embodiment 2 of the present invention will be described with reference to the drawings.
FIG. 4 is a conceptual diagram (before mounting) of the detachable connector according to the second embodiment. FIG. 5 is a perspective view thereof. FIG. 6 is a conceptual diagram (after mounting) of the detachable connector according to the second embodiment. FIG. 7 is a conceptual diagram illustrating the detachable connector according to the second embodiment (immediately after detachment).
As shown in these drawings, a detachable connector 10B according to the present embodiment has a liquid feeding tube 12 having a tapered receiving portion 11 at one end, and a tapered shape substantially the same shape as the tapered receiving portion 11. A recess 13 is connected to the tapered recess 13, and an insertion passage 14 into which the liquid feeding tube 12 is inserted, and a plug male portion 22 having the liquid feeding tube 21 on the same axis as the insertion passage 14 are fixedly attached. A socket 33 having a mounting portion 32 having a stop portion 31, and a plug male portion 22 having a locking claw portion 23 to be locked to the locking portion 31 having the liquid feeding tube 21 at the shaft center, and The outer periphery of the socket 33 is provided with a pair of handle portions 34-1 and 34-2 that open the locking portion 31. Moreover, the measuring part of the resin socket body is formed with a slit so that it can be deformed when the pair of handle parts 34-1 and 34-2 are pressed.

  FIG. 6 shows a state where the plug male part 22 is mounted. From such a state, by pressing the pair of handle parts 34-1 and 34-2 with a manipulator for remote operation (not shown), As shown in FIG. 7, the socket 33 can be removed from the plug male portion 22 by opening the locking claw portion 23 from the locking portion 31 and then sliding it in the axial direction.

  In the present embodiment, when the socket 33 is inserted, the insertion operation can be simplified as compared with the first embodiment because the socket 33 can be inserted in a one-touch manner. In addition, since the socket 33 can be removed simply by sandwiching the pair of handle portions 34-1 and 34-2 with a manipulator for remote operation once, the maintenance operability is improved.

Here, the structure for ensuring the adhesiveness of the plug male part 22 in a present Example is demonstrated using FIG. 14 thru | or FIG.
Here, FIG. 14A is a schematic diagram of a state before the plug male portion 22 is inserted into the tapered receiving portion 11 provided at one end portion of the liquid feeding tube 12. FIG. 14-2 is a schematic view of the plug male portion 22 inserted.
First, the opening D on the distal end side of the recess 13 formed in the socket 33 is larger than the opening d on the distal end of the plug male part 22. Further, the opening angle α of the tapered receiving portion 11 provided at one end of the liquid feeding tube 12 is set to be smaller than the angle β of the distal end of the plug male portion 22. The opening angle γ of the recess 13 of the socket 33 is substantially the same as or slightly larger than the angle β of the tip of the plug male part 22.

In such a state, when the plug male part 22 is inserted into the receiving part 11, the locking part 31 and the locking claw part 23 are locked, and as a result, the socket 33 slides to the tip side of the recess 13, The tip 22a of the plug male part 22 spreads and pushes in the liquid feeding tube 12 and the receiving part 11 at the opening D part on the tip side of the recessed part 13, and in the A part shown in FIG. A ring-shaped contact surface is formed on the entire peripheral surface.
As a result of this surface contact, the adhesiveness between the two is improved, fluid leakage is prevented, and the liquid feeding tube 12 and the liquid feeding tube 21 are directly connected to each other, thereby preventing fluid from staying.

As shown in FIG. 15, when the opening angle γ of the recess 13 of the socket 33 is made slightly larger than the angle β of the tip of the plug male part 22, if the plug male part 22 is inserted into the receiving part 11, As a result of the locking portion 31 and the locking claw portion 23 being locked together, the socket 33 slides to the distal end side of the concave portion 13, and the distal end 22 a of the plug male portion 22 is fed at the opening D portion on the distal end side of the concave portion 13. The liquid tube 12 and the receiving part 11 are spread and pushed. As a result, the tapered receiving portion 11 is expanded by the tip end portion of the plug male portion 22, and the concave portion 13 of the socket 33 is deformed by the pressing force of the tip end of the plug male portion 22, thereby improving the adhesion. That is, by deforming so that the opening angle γ of the recess 13 is the same as the angle β of the tip of the plug male portion 22, the receiving portion 11 and the plug male portion 22 are held in the entire inner peripheral surface of the recess 13. The tip end of the plug male part 22 and the recess 13 form a ring-shaped contact surface.
As a result of this surface contact, the adhesiveness between the two is improved, fluid leakage is prevented, and the liquid feeding tube 12 and the liquid feeding tube 21 are directly connected to each other, thereby preventing fluid from staying.

As shown in FIG. 16, an elastically deformable elastic member (for example, a sponge or the like) 60 is interposed between the inner surface of the concave portion 13 of the socket 33 and the tapered receiving portion 11, and the plug male portion 22 is attached. You may make it improve the adhesiveness in.
In connection with the connection as shown in FIG. 14 to FIG. 16, the formation of a ring-shaped contact surface on the inner surface of the tapered receiving portion and the improvement of the adhesion by the elastic member are described in Example 1. The same applies to the above.

A detachable connector according to Embodiment 3 of the present invention will be described with reference to the drawings.
FIG. 8 is a conceptual diagram (before mounting) of the detachable connector according to the third embodiment. FIG. 9 is a conceptual diagram (after mounting) illustrating the detachable connector according to the third embodiment. FIG. 10 shows the state of the extracting operation.
As shown in these drawings, the detachable connector 10C according to the present embodiment has a liquid feeding tube 12 having a tapered receiving portion 11 at one end, and a tapered shape substantially the same shape as the tapered receiving portion 11. A recess 13 is connected to the tapered recess 13, and an insertion passage 14 into which the liquid feeding tube 12 is inserted, and a plug male portion 22 having the liquid feeding tube 21 on the same axis as the insertion passage 14 are fixedly attached. A socket 33 comprising a mounting part 32 having a stop 31;
It consists of a plug male part 22 having a locking claw part 23 that locks the locking part 31 having the liquid feeding tube 21 at the shaft center, and slides to the rear side of the locking claw part 23 of the plug male part 22. It is free and has an opening jig 42 having an opening protrusion 41 that opens the locking portion 31 of the socket 33.

  In FIG. 8, when the plug male portion 22 is inserted, the locking claw portion 23 of the plug male portion 22 is inserted into the locking portion 31 of the socket 33 only by inserting the plug male portion 22 into the socket 33 using a remote operation manipulator (not shown). Is locked and installation is completed.

  Then, from the state where the plug male part 22 of FIG. 9 is attached, the flange part 43 of the opening jig 42 is pressed from the rear toward the socket 33 by using a manipulator for remote operation (not shown), thereby opening the protrusion. 41 spreads the elastically deformable locking portion 31, and the locking claw portion 23 is released from the locking portion 31. In this state, the socket 33 can be removed from the plug male portion 22 by retracting the opening jig 42 together with the plug male portion 22 in the axial direction by a remote operation manipulator (not shown).

  Here, in order to reliably release the locking claw portion 23 from the locking portion 31, the height h1 of the locking claw portion 23 of the plug male portion 22 is set to be an opening protrusion of the opening jig 42 as shown in FIG. The height of the end portion of the portion 41 is lower than h2. As a result, when the opening jig 42 is brought into contact with the locking claw portion 23, the tip of the locking portion 31 surely goes down the slope 23 a of the locking claw portion 23.

12 and 13 show a modification of the third embodiment.
FIG. 12 shows the projections 44-1 and 44-2 provided on the socket 33 side from the flanges 43-1 and 43-2 of the opening jig 42, and when the socket 33 is pulled out, the locking portion 31 is released. This operation is made more reliable by the projections 44-1 and 44-2.

  Further, as shown in FIG. 13, a protruding portion 45 having a substantially circular tip is bulged at the open end portion 41, and the protruding portion 45 facilitates the release of the locking claw portion 23 from the locking portion 31. You may do it.

FIG. 17 shows a case where the connector is applied to a flow injection apparatus.
As shown in FIG. 17, for example, the detachable connectors 10 </ b> A- 1 shown in FIG. 1 are connected to the pipes of the liquid feed pumps 101-1 and 101-2, the reaction coil 102, and the optical detector 103 in the flow injection analyzer 100. -10A-3 attached. Each unit is moved and assembled by a remote control device.

  According to this, it becomes possible to divide and handle each device for each unit, and assembly and maintenance by a remote operation device can be easily performed.

Next, FIG. 18 shows a case where the connector is applied to the liquid chromatograph 110. As shown in FIG. 18, for example, the detachable connectors 10A-1 to 10A-6 are attached to the pipes of the sample injection valve 111 and the separation column 112, and the units are moved and assembled by remote control devices for each unit.
The liquid chromatograph device can be easily assembled and maintained by a remote control device.

  The detachable connector of the present invention is easy to perform maintenance operation with a remote control device, and is suitable for connecting piping in a space such as a box for sample analysis in a nuclear facility.

  As described above, the detachable connector according to the present invention is easy to install and has good adhesion, so that maintenance operation with a remote operation device is facilitated, for example, piping in a space such as an analysis box. Suitable for use in connection.

It is a conceptual diagram (before mounting | wearing) which shows the attachment / detachment connector which concerns on Example 1. FIG. It is a conceptual diagram (after mounting | wearing) which shows the attachment / detachment connector which concerns on Example 1. FIG. It is a conceptual diagram which shows the other detachable connector which concerns on Example 1. FIG. It is a conceptual diagram (before mounting | wearing) which shows the attachment / detachment connector which concerns on Example 2. FIG. 6 is a perspective view of a detachable connector according to Embodiment 2. FIG. It is a conceptual diagram (after mounting | wearing) which shows the attachment / detachment connector which concerns on Example 2. FIG. It is a key map showing a detachable connector concerning Example 2 (just after detachment). It is a conceptual diagram (before mounting) which shows the attachment / detachment connector which concerns on Example 3. FIG. It is a conceptual diagram (after mounting | wearing) which shows the attachment / detachment connector which concerns on Example 3. FIG. It is drawing which shows the operation | movement which extracts the connector of Example 3. FIG. It is an enlarged view of the operation | movement which extracts the connector. FIG. 10 is a conceptual diagram showing a detachable connector showing another modification of Example 3; FIG. 10 is a conceptual diagram showing a detachable connector showing another modification of Example 3; It is a figure (before mounting | wearing) which shows the state of joining of a liquid feeding tube and a plug male part. It is a figure which shows the state of joining of a liquid feeding tube and a plug male part (after mounting | wearing). It is a figure (after mounting | wearing) which shows the state of joining of another liquid feeding tube and a plug male part. It is a figure (after mounting | wearing) which shows the state of joining of another liquid feeding tube and a plug male part. It is a figure which shows the case where a detachable connector is applied to the flow injection apparatus. It is a figure which shows the case where a detachable connector is applied to a liquid chromatograph.

Explanation of symbols

10A to 10C Removable connector 11 Tapered receiving portion 12 Liquid feeding tube 13 Tapered concave portion 15 Threaded portion 16, 33 Socket 17 Handle portion 18 Support portion 21 Liquid feeding tube 22 Plug male portion 23 Locking claw portion 25 Manipulator 31 Engagement Stop part 32 Wearing part

Claims (9)

A liquid delivery tube having a tapered receiving portion at one end;
A tapered concave portion having substantially the same shape as the tapered receiving portion, an insertion passage communicating with the tapered concave portion and for inserting a liquid feeding tube, and a fixed side having the liquid feeding tube on the same axis as the insertion passage A socket having a threaded portion for threading the plug male portion of
Consisting of a plug male part on the fixed side having a liquid-feeding tube at the shaft center, and
The outer periphery of the socket has a handle portion operated by at least one manipulator,
A detachable connector having a support section having a circular cross section that is coaxial with a liquid feeding tube on an outer periphery of the socket and is gripped by a manipulator. A liquid delivery tube having a tapered receiving portion at one end;
A tapered concave portion having substantially the same shape as the tapered receiving portion, an insertion passage that communicates with the tapered concave portion and into which a liquid feeding tube is inserted, and a plug male portion having the liquid feeding tube on the same axis as the insertion passage A socket having a mounting portion having a locking portion to which the hook is mounted;
It consists of a plug male part having a locking claw part that locks the locking part having a liquid-feeding tube at the shaft center, and
A detachable connector having a pair of handle portions for opening the locking portion on an outer periphery of the socket. A liquid delivery tube having a tapered receiving portion at one end;
A tapered concave portion having substantially the same shape as the tapered receiving portion, an insertion passage that communicates with the tapered concave portion and into which a liquid feeding tube is inserted, and a plug male portion having the liquid feeding tube on the same axis as the insertion passage A socket having a mounting portion having a locking portion to which the hook is mounted;
It consists of a plug male part having a locking claw part that locks the locking part having a liquid-feeding tube at the shaft center, and
A detachable connector characterized by having an opening jig that is slidable to the rear side of the locking claw portion of the plug male portion and has an opening protrusion that opens the locking portion of the socket. In any one of Claims 1 thru | or 3,
The detachable connector, wherein the plug male portion has a tip formed with a ring-shaped contact surface on the inner surface of the tapered receiving portion of the socket when connected. In any one of Claims 1 thru | or 4,
An attachable / detachable connector comprising an elastic member that is elastically deformable between a tapered concave portion of the socket and a tapered receiving portion at an end of the liquid feeding tube. In any one of Claims 1 thru | or 5,
A detachable connector that is operated by a manipulator for remote operation. In any one of Claims 1 thru | or 6,
A detachable connector for assembling an analyzer, wherein the detachable connector is used for assembling the analyzer.   8. A flow injection apparatus comprising a liquid connection part connected by the detachable connector according to claim 1.   A liquid chromatograph, wherein the liquid feeding connection portion is connected by the detachable connector according to any one of claims 1 to 7.

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