JP5395583B2 - container - Google Patents

Description

  The present invention relates to a container for storing a liquid.

In general, liquids such as semiconductor high-purity chemicals and general chemicals are filled in containers such as tanks at production plants and shipped with caps (lids) fitted into at least a pair of openings formed in these containers. Has been.
When taking out the liquid stored in this container, first, the cap fitted in the opening of the container is removed, and a plug to which the siphon tube is connected and a plug to which the siphon tube is not connected are respectively attached. Then, the socket to which the liquid feeding hose is connected is connected to the plug to which the siphon tube is connected, and the socket to which the air feeding hose is connected is connected to the plug to which the siphon tube is not connected.

In this state, the liquid in the container was sucked up from the siphon tube to the plug by the pump, and was sent out to the liquid feeding hose connected to the socket. At this time, a gas such as nitrogen was introduced from an air supply hose connected to the other socket so that the inside of the container did not become negative pressure.
As described above, a connector is known as a technique for connecting a socket to a plug with one touch. In a conventional connector, in order to reduce the amount of liquid that cannot be drawn out from the container (hereinafter referred to as “residual liquid amount”), an opening of a siphon tube that extends toward the bottom surface of the container is disposed in the vicinity of the bottom surface. Some conventional connectors include a liquid feeding hose for sucking liquid and an air feeding hose for taking in gas so that both hoses can be connected to one connector.

In addition, some containers that are used with a connector attached have a concave portion formed by bending the bottom surface downward (outside). The connector attached to the container is used by bending the siphon tube at the lower end side in the horizontal direction by approximately 90 degrees so that the opening at the tip of the siphon tube is deepest in the recess formed in the bottom surface of the container. The amount of the remaining liquid can be reduced by arranging in the region.
Further, in a connector in which the lower end portion of the siphon tube is curved, a structure has been proposed in which the coupling portion and the connector main body are connected so as to be relatively rotatable about the central axis. In such a connector, since the connector can be installed in the container without rotating the siphon tube fixed to the plug portion arranged in the connector body, the tip of the siphon tube is placed in a region (concave portion) where the liquid remains in the container. It becomes easy to arrange | position, therefore, the residual liquid amount in a container can be reduced. (For example, see Patent Document 1)

JP 2006-182400 A

By the way, in the case of a connector that reduces the amount of residual liquid by curving the lower end side of the siphon tube, the connector body can be relatively rotated about the central axis with respect to the connector body after the connector body is press-fitted into the container opening. A simple coupling portion is screwed into the opening of the container and fixed. For this reason, when screwing the coupling portion, it is not necessary to rotate the siphon tube fixed to the plug portion of the connector main body, and therefore the amount of residual liquid can be reduced by arranging an opening in the bottom surface recess on the container side.
However, when the coupling part is rotated and screwed into the connector body that is press-fitted into the opening on the container side, the final tightening force (rotational force) at the time of screwing is received. In some cases, the connector body was also rotated. Such follow-up changes the direction of the siphon tube that is connected to the connector body and bends, so that the tip opening of the siphon tube is displaced from the recess formed in the container, causing the remaining liquid amount to increase. Become.

From such a background, the position and orientation of the siphon tube whose lower end is curved and opened can be accurately determined and easily attached to a container having a recess, minimizing the amount of liquid remaining in the container. There is a connector that can suck out liquid.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a container that is attached by press-fitting a connector body into an opening, for example, by screwing a coupling portion into the opening of the container. An object of the present invention is to provide a container that prevents the connector body and siphon tube from being rotated when the connector body is fixed by being attached, and the rotational direction position of the siphon tube having a curved lower end portion does not vary.

In order to solve the above problems, the present invention employs the following means.
The container according to the reference example of the present invention is provided with a cylindrical nozzle for taking out the liquid at the top, and the tip opening of the siphon tube whose lower end is curved in a substantially horizontal direction along the bottom of the container is inserted to the vicinity of the bottom of the container. A connector for pulling out the liquid from the container and fixing the upper end of the siphon tube is a container for storing liquid attached to the cylindrical nozzle, and the connector rotates with respect to the cylindrical nozzle. It is characterized by having a detent mechanism for preventing the rotation.

According to the container of such a reference example, since the rotation prevention mechanism for preventing the connector from rotating with respect to the cylindrical nozzle is provided, the rotational position of the siphon tube inserted into the container from the cylindrical nozzle (curved) The orientation of the siphon tube) can be prevented from fluctuating, and the liquid can be sucked out while being held in a predetermined position and direction that minimizes the amount of remaining liquid in the container.

A container according to the present invention is a liquid storage container having a cylindrical nozzle for taking out a liquid provided at an upper portion thereof, and is attached to the cylindrical nozzle, and a lower end portion thereof is curved in a substantially horizontal direction along the container bottom surface. A connector that inserts the tip opening of the siphon tube into the vicinity of the bottom of the container and draws out the liquid from the container, and a coupling part having a threaded part that is threadedly engaged with a threaded part on the container side formed in the cylindrical nozzle; A main body which is inserted into the cylindrical nozzle and attached, and which can be assembled with the coupling portion sharing a central axis, the coupling portion being rotatable with respect to the main body and sliding in the axial direction. possible and engaged so that the body is the later inserted into the cylindrical nozzle, is secured to the cylindrical nozzle by screwing connected to the cylindrical nozzle by rotating the coupling portion, the siphon Said body fixing the upper end of, and is characterized in that it comprises a detent mechanism which prevents rotation with respect to said cylindrical nozzle.

According to such a container of the present invention, the tip opening of the siphon tube that is attached to the cylindrical nozzle and has a lower end curved in a substantially horizontal direction along the container bottom is inserted to the vicinity of the container bottom so that the inside of the container A connector for drawing out the liquid is attached to the coupling part having a threaded part that is threadedly engaged with the threaded part on the container side formed in the cylindrical nozzle, and is inserted into the cylindrical nozzle and attached, and shares the central axis with the coupling part And the coupling portion is engaged so as to be rotatable with respect to the main body and slidable in the axial direction, and the main body is coupled to the cylindrical nozzle after being inserted. Since the main body, which is fixed to the cylindrical nozzle by rotating the part and screwed to the cylindrical nozzle and fixed to the upper end of the siphon tube, is prevented from rotating with respect to the cylindrical nozzle, , When fixing the connector by screwing engagement portion to the cylindrical nozzle of the container, by the action of the detent mechanism, it becomes possible to prevent the rotation bring the body and the siphon tube. Accordingly, a predetermined position that prevents the rotational position (the direction of the curved siphon tube) of the siphon tube that is press-fitted into the container from the cylindrical nozzle from changing and minimizes the amount of residual liquid in the container. And hold in the direction to suck out the liquid.

In the above container, the detent mechanism is preferably one or more sets of concave and convex engaging portions and / or chamfer engaging portions formed on the cylindrical nozzle and the main body, whereby the main body and siphon It is possible to reliably prevent the pipe from being rotated.
In this case, the anti-rotation mechanism has a pair in which the circumferential position of the cylindrical nozzle is matched with the bending direction of the siphon tube, so that the tip is bent when the main body is inserted into the cylindrical nozzle. The operator can easily recognize the direction in which the siphon tube is inserted (the direction of the curved siphon tube).
In addition, the anti-rotation mechanism includes a plurality of sets in which the circumferential positions of the cylindrical nozzles are asymmetric, so that when the main body is inserted into the cylindrical nozzle, the rotational direction position of the main body (the direction of the curved siphon tube) ) Is uniquely determined.

  In the above container, the screwing position of the screw part of the container and the screw part of the coupling part is preferably disposed above the connector seal position of the cylindrical nozzle. This makes it difficult for the liquid in the container to adhere.

A container according to a reference example of the present invention is a container for storing liquid in which a cylindrical nozzle for taking out a liquid is provided at an upper portion, and is attached by press-fitting to the cylindrical nozzle, and has a lower end portion along the container bottom surface. A flange that regulates the amount of press-fitting to the main body to which the upper end of the siphon tube is fixed by inserting a tip opening of the siphon tube that is curved in a substantially horizontal direction to the vicinity of the bottom of the container and drawing the liquid out of the container. And a rotation preventing mechanism for preventing the flange portion from rotating relative to the cylindrical nozzle.

According to the container of such a reference example , the tip opening of the siphon tube that is press-fitted and attached to the cylindrical nozzle and has a lower end curved in a substantially horizontal direction along the container bottom is inserted to the vicinity of the container bottom. A connector for drawing liquid from inside the container has a flange portion for defining a press-fitting amount in a main body to which the upper end portion of the siphon tube is fixed, and a detent that prevents the flange portion from rotating with respect to the cylindrical nozzle. Since the mechanism is provided, the rotational position of the siphon tube inserted into the container from the cylindrical nozzle (the direction of the curved siphon tube) is prevented from changing, and the amount of remaining liquid in the container is minimized. The liquid can be sucked out while being held in the position and direction. That is, the main body and the siphon tube can be prevented from rotating with respect to the cylindrical nozzle, and the direction of the siphon tube can be held at a predetermined position and direction.
In this case, the rotation prevention mechanism is preferably one or more sets of concave and convex engaging portions and / or chamfered engaging portions formed on the cylindrical nozzle and the flange portion.

According to the container of the present invention, in order to fix the connector body that is press-fitted into the cylindrical nozzle that is the opening on the container side, the connector structure that is screwed and connected to the cylindrical nozzle by rotating the coupling portion Since the rotation preventing mechanism prevents the main body and the siphon tube from being rotated due to the tightening of the coupling portion, the curved portion of the siphon tube can be held in a predetermined position and direction. Further, in the structure of the connector that press-fits the main body into the cylindrical nozzle, the rotation preventing mechanism can prevent the main body and the siphon tube from rotating with respect to the cylindrical nozzle, and can hold the siphon tube in a predetermined position and direction.
As a result, the opening of the siphon tube inserted to the bottom of the container is at the lowest position in the container and is directed in a predetermined direction, so that the liquid in the container is drawn out to the maximum. Therefore, there is a remarkable effect of reliably minimizing the amount of liquid remaining in the container.

1 is a cross-sectional view of a container according to a first embodiment of the present invention in which a connector (a screw is an upper part of a seal part) is attached to the container, and an upper part shows a state before connecting a coupling part to a cylindrical nozzle. In the lower part, a state in which the coupling portion is connected and fixed to the cylindrical nozzle is shown. It is AA sectional drawing of FIG. 1 which shows a rotation prevention structure. It is a figure which shows the positional relationship with the connector attached to the container of this invention. FIG. 3 is a cross-sectional view taken along line AA of FIG. 1 showing a first modification of the detent structure shown in FIG. 2. It is AA sectional drawing of FIG. 1 which shows a 2nd modification about the detent | locking structure shown in FIG. It is AA sectional drawing of FIG. 1 which shows a 3rd modification about the detent | locking structure shown in FIG. It is AA sectional drawing of FIG. 1 which shows a 4th modification about the detent | locking structure shown in FIG. It is AA sectional drawing of FIG. 1 which shows a 5th modification about the detent | locking structure shown in FIG. It is sectional drawing which shows the 6th modification which provided the protrusion part which receives reaction force in the connector of embodiment shown in FIG. 1, The state before connecting a coupling part to a cylindrical nozzle is shown in the upper part, and the lower part is shown. The state which connected and fixed the coupling | bond part to the cylindrical nozzle is shown. It is sectional drawing of the state which attached the connector (a screw is the lower part of a seal part) which concerns on the 7th modification of this invention to the container, The state before connecting a coupling part to a cylindrical nozzle is shown in the upper part, Shows a state in which a coupling portion is connected to a cylindrical nozzle and fixed. It is sectional drawing of the state which attached the connector (it is provided with a protrusion part and a screw is a lower part of a seal part) which concerns on the 8th modification of this invention to a container, and the state before connecting a coupling part to a cylindrical nozzle is shown in the upper part. In the lower part, a state where the coupling part is connected and fixed to the cylindrical nozzle is shown. It is sectional drawing of the state which attached the connector (The screw is the upper part of a seal part, and there is no stroke of the connection part with respect to a main body) which concerns on the 9th modification of this invention to the container, A connection part is connected to a cylindrical nozzle in the upper part. The previous state is shown, and the lower part shows a state where the coupling portion is connected and fixed to the cylindrical nozzle. It is sectional drawing of the state which attached the connector (The screw is a lower part of a seal part, and there is no stroke of the coupling part with respect to a main body) concerning a 10th modification of the present invention to a container, and connects a coupling part to a cylindrical nozzle in the upper part. The previous state is shown, and the lower part shows a state where the coupling portion is connected and fixed to the cylindrical nozzle. It is sectional drawing of the state which attached the connector (the protrusion between main body / coupling | bond part) which concerns on the 11th modification of this invention to the container, The state before connecting a coupling | bond part to a cylindrical nozzle is shown by the upper part, The lower part shows a state in which the coupling part is connected to the cylindrical nozzle and fixed. The container which concerns on the reference example of this invention has shown the state which attached the connector (external thread type | mold) to the container, (a) is a top view, (b) is sectional drawing. It is sectional drawing which shows the state which attached the cap to the container provided with the connector shown in FIG. FIG. 16 is a cross-sectional view showing a modified example in which a detent structure using unevenness in the vertical direction is adopted for the connector of the reference example shown in FIG. 15.

A container according to an embodiment of the present invention will be described below with reference to the drawings.
FIG. 3 is a diagram for explaining a state in which the connector is attached to the container according to the present invention, and a configuration example in which a dedicated connector is used for each of the liquid feeding hose for liquid suction and the air feeding hose for gas intake. It is.
As shown in FIG. 3, two openings 53A, 53B are formed on the upper surface of the container 51 in which the liquid is stored, the connector 1 for drawing out the liquid is disposed in one opening 53A, and the other opening In the part 53B, a gas flow connector 1 'is arranged.
The bottom surface 55 of the container 51 is formed with a concave portion 55a curved into a concave curved surface. In addition, although the example of the bottom face shape in which the center of the container 51 is deepest is shown, the recessed part 55a in a figure is not limited to this shape example in particular, and forms the deepest part by another bottom face shape. It may be a container.

As shown in FIG. 3, sockets 59 and 59 'having a hose 57 are detachably attached to the connectors 1 and 1'.
The liquid in the container 51 is pulled up from the socket 59 and the hose 57 attached to the connector 1, and the gas is supplied into the container 51 from the socket 59 'and the hose 57 attached to the connector 1'.
Note that the gas flow connector 1 ′ and the socket 59 are not limited to the above-described configuration (the configuration shown in FIG. 3). For example, the container 51 is configured by connecting a gas flow system to the liquid drawing socket 59. It is good also as a structure which supplies gas inside.

<First Embodiment>
Next, the structure of the container according to the first embodiment will be described with reference to FIGS. 1 is a longitudinal sectional view showing a configuration example of the connector 1 attached to the cylindrical nozzle 61 of the container 51 according to the present invention, and FIG. 2 is a sectional view taken along the line AA in FIG.
As shown in FIGS. 1 to 3, the connector 1 is screwed into a connector main body (main body) 3 that is a main body portion of the connector 1 and a female screw portion 63 formed in a cylindrical nozzle 61 of the container 51. The connecting portion 5 is connected to the plug portion 7, the plug portion 7 is a connecting portion to the socket 59, and the siphon tube 9 is fixed to the plug portion 7 and extends toward the inside of the container 51. . The cylindrical nozzle 61 is a liquid extraction opening formed in the container 51.

  In this case, the siphon tube 9 is curved approximately 90 degrees toward the substantially horizontal direction so that the lower end side is along the bottom surface of the container, and the tip opening 9a is opened to the side near the deepest portion of the recess 55a. (See FIG. 3). In the illustrated container 51, a female thread portion 63 for the connector 1 is formed on the inner peripheral surface of the cylindrical nozzle 61, and a male thread portion 65 for attaching a container cap (not shown) for container sealing is formed on the outer peripheral surface. It has been done.

The connector body 3 is formed in a substantially bottomed cylindrical shape, and a plug portion 7 is integrally formed therein. Further, a connecting portion 5 formed in a substantially cylindrical shape is provided on the opening end side of the connector main body 3, and the connecting portion 5 can rotate around the central axis C of the connector main body 3 and the connecting portion 5. It has become.
On the outer peripheral surface of the connector main body 3, a flange portion 11 that protrudes outward in the radial direction is formed. The flange portion 11 includes an O-ring 13 of a seal member disposed on a surface (lower surface in the drawing) on the siphon tube 9 side. The O-ring 13 prevents the liquid in the container 51 from leaking when the connector main body 3 is press-fitted into the cylindrical nozzle 61.
Further, on the inner peripheral surface on the opening end side of the connector main body 3, a main body side protrusion 15 that protrudes inward in the radial direction (axial center side) is provided in the circumferential direction. The main body side protrusion 15 is formed to engage with the coupling portion 5.

The coupling portion 5 is formed with a male screw portion (screw portion) 17 that is screwed to the female screw portion 63 of the cylindrical nozzle 61 on the outer peripheral surface, and protrudes radially outward in the circumferential direction at the lower end of the outer peripheral surface. 3 is formed with a connecting portion side protrusion 19 that engages with the three main body side protrusions 15.
The outer diameter of the joint-side protrusion 19 is formed larger than the inner diameter of the main-body-side protrusion 15, and the joint-side protrusion 19 is engaged with the main-body-side protrusion 15 by press-fitting the joint 5 into the connector body 3. Yes. Therefore, the coupling portion 5 and the connector main body 3 are engaged with each other so as to be rotatable about the central axis C. Further, the coupling portion 5 is formed on the connector main body 3 side, and the upper end portion becomes the main body side protrusion 15. The range limited by the recess 21 can be slid in the vertical direction.

The plug portion 7 is formed in a substantially cylindrical shape, and as shown in FIG. 1, the plug portion 7 is formed integrally with the bottom surface (the lower surface in the drawing) of the connector body 3, and the inside thereof is a flow hole 23 through which liquid flows. ing. Further, on the outer peripheral surface of the plug portion 7, a cap screw portion 25 that is screwed with a plug cap (not shown) for preventing liquid outflow is formed on the lower end side in the drawing, and further engages with the socket 59. An annular locking groove 27 and a locking protrusion 29 are formed in the vicinity of the intermediate portion.
The plug cap is removed from the plug portion 7 when the socket 59 is attached to the connector 1, and is attached to the plug portion 7 in other cases to prevent the fluid from flowing out.
The siphon tube 9 of the tubular member described above is connected to the lower end portion of the plug portion 7 to form a liquid flow path that communicates with the flow hole 23 and extracts the liquid from the tip opening 9a.

As described above, the connector 1 is attached to the cylindrical nozzle 61 provided on the upper portion of the container 51 for storing the liquid, and the tip of the siphon tube 9 that is curved in a substantially horizontal direction so that the lower end portion is along the bottom surface 55 of the container 51. The opening 9a is inserted to the vicinity of the bottom of the container to draw the liquid from the inside of the container 51, and is a male threaded part (threaded part) screwed into a female threaded part (threaded part) 63 on the container 51 side formed in the cylindrical nozzle 61. ) And a connector body 3 that is attached to the cylindrical nozzle 61 by being inserted (press-fitted) and connected to the joint portion 5 so as to be rotatable relative to the center axis C. Is done.
In the connector 1, the siphon tube 9 is inserted from the cylindrical nozzle 61 and the connector main body 3 is press-fitted and attached to the cylindrical nozzle 61, and then the male screw portion 17 of the coupling portion 5 is connected to the female screw portion 63 of the cylindrical nozzle 61. It is attached to the cylindrical nozzle 61 of the container 51 by screwing and fixing.

In the present invention, the rotation preventing mechanism 31 is provided to prevent the connector main body 3 with the upper end portion of the siphon tube 9 from rotating relative to the cylindrical nozzle 61 with respect to the connector 1 described above.
The anti-rotation mechanism 31 is one set or a plurality of sets of concave and convex engaging portions and / or chamfered engaging portions formed on the cylindrical nozzle 61 and the connector main body 3. That is, when the anti-rotation mechanism 31 includes a plurality of sets of concave and convex engaging portions and chamfered engaging portions, only a plurality of sets of concave and convex engaging portions, a plurality of sets of chamfered engaging portions, Any of a plurality of combinations of the engaging portion and the chamfered engaging portion may be used.

The anti-rotation mechanism 31 shown in FIG. 2 includes a set of one convex portion 33 provided on the inner peripheral surface of the cylindrical nozzle 61 and one concave portion 35 provided on the outer peripheral surface of the connector body 3. It is an uneven | corrugated engaging part. In this case, the convex portion 33 and the concave portion 35 have substantially the same cross-sectional shape, and the convex portion 33 enters and engages with the concave portion 35 by press-fitting the connector body 3 into the cylindrical nozzle 61.
As a result, when the connecting portion 5 is screwed into the cylindrical nozzle 61 of the container 51 and the connector 1 is fixed, the connector main body 3 and the siphon tube are operated by the anti-rotation mechanism 31 in which the convex portion 33 and the concave portion 35 engage with each other. 9 can be prevented from being carried around.

Therefore, the siphon tube 9 inserted with the connector main body 3 press-fitted into the container 51 from the cylindrical nozzle 61 prevents its rotational direction position (direction of the curved siphon tube 9 / curving direction) from fluctuating. it can. As a result, the tip opening 9a of the siphon tube 9 is surely inserted to a predetermined position in the container 51, that is, the liquid can be taken out by being positioned in the concave portion 55a which is the deepest portion. In other words, by providing the anti-rotation mechanism 31 for the connector main body 3, the siphon tube 9 is held at a predetermined position that minimizes the amount of remaining liquid in the container 51, and the liquid in the container 51 is sucked out to the maximum. be able to.
In such an anti-rotation mechanism 31, when the concave / convex engaging portion is one set, it is desirable that the circumferential position of the cylindrical nozzle 61 provided with the convex portion 33 coincides with the bending direction of the siphon tube 9. That is, when the connector body 3 is press-fitted into the cylindrical nozzle 61 and inserted in the circumferential direction where the convex portion 33 and the concave portion 35 are provided so as to coincide with the bending direction of the siphon tube 9, the anti-rotation mechanism 31. The convex portion 33 serves as a guideline for determining the insertion direction of the siphon tube 9 whose tip is bent, and the operator can easily recognize the direction (curving direction) of the siphon tube 9 inserted into the container 51.

By the way, the anti-rotation mechanism 31 mentioned above is not limited to the combination of the convex part 33 and the recessed part 35 shown in FIG. 2, A various modification is possible. The anti-rotation mechanism 31A of the first modification shown in FIG. 4 is provided with two sets of convex portions 33 and concave portions 35. In addition, the convex part 33 and the recessed part 35 may provide multiple sets of 3 sets or more.
The anti-rotation mechanism 31A having such a configuration can receive the final tightening force at the time of screwing, so that the two sets of engaging portions can receive the strength. As a result, it is possible to reliably prevent follow-up by the engaging portion that is not easily damaged.

  In this case, the anti-rotation mechanism 31A has two or more sets of engaging portions in which the circumferential position of the cylindrical nozzle 61 is asymmetric, so that when the connector body 3 is press-fitted into the cylindrical nozzle 61 and inserted, The rotational position of the connector body 3 (the direction of the curved siphon tube 9) is uniquely determined. For this reason, the connector main body 3 and the siphon tube 9 attached to the container 51 are easily and reliably held at a predetermined position that minimizes the amount of remaining liquid in the container 51, and sucks out the liquid in the container 51 to the maximum. be able to.

Further, the anti-rotation mechanism 31B of the second modification shown in FIG. 5 is obtained by reversing the place where the pair of convex portions 33 and concave portions 35 constituting the anti-rotation mechanism 31 shown in FIG. That is, since the convex portion 33A is formed on the connector main body 3 side and the concave portion 35A is formed on the nozzle main body 61 side, the anti-rotation mechanism 31B has the same effect as the anti-rotation mechanism 31 described above. Can be obtained.
Further, the anti-rotation mechanism 31C of the third modification shown in FIG. 6 is obtained by reversing the formation positions of the two sets (plural sets) of the convex portions 33 and the concave portions 35 constituting the anti-rotation mechanism 31A shown in FIG. Thus, it is possible to obtain the same effect as that of the anti-rotation mechanism 31A.

  Further, in the rotation preventing mechanism 31D of the fourth modification shown in FIG. 7, a set of chamfered engaging portions is adopted instead of the above-described set of concave and convex engaging portions. That is, one chamfered portion 37 is formed on the outer peripheral surface of the connector main body 3 having a circular cross section over the entire length in the axial direction, and the flat portion 39 is formed on the inner peripheral surface of the cylindrical nozzle 61 corresponding to the chamfered portion 37. As a result, it is possible to obtain the same operational effects as the anti-rotation mechanisms 31 and 31B shown in FIGS. In this case, it is desirable that the chamfered portion 37 and the flat portion 39 have their circumferential positions coincide with the bending direction of the siphon tube 9 inserted into the container 51 and serve as a guideline for insertion work.

  Further, the detent mechanism 31E of the fifth modified example shown in FIG. 8 includes two sets (plural sets) of chamfered portions 37 and two sets (multiple sets) of the detent mechanism 31D shown in FIG. ), And the same effects as those of the anti-rotation mechanisms 31A and 31C shown in FIGS. 4 and 6 can be obtained.

Further, in the connector 1 shown in FIG. 1, as in a sixth modification shown in FIG. 9, for example, a protrusion 41 that engages with the lower end of the cylindrical nozzle 61 when provided on the outer peripheral surface of the connector body 3 is provided. It is desirable to keep it. In addition, about the connector 1A of the 6th modification shown in FIG. 9, the same code | symbol is attached | subjected to the part similar to embodiment mentioned above, and the detailed description is abbreviate | omitted.
The protruding portion 41 is formed by protruding one or more rib-like members or claw-like members in the circumferential direction with respect to the outer peripheral surface of the connector main body 3, and is a siphon inserted into the container 51 from the cylindrical nozzle 61. It arrange | positions so that the pipe | tube 9 may receive the upward reaction force which arises in contact with the bottom face of the container 51. FIG.

That is, the connector main body 3 press-fitted into the cylindrical nozzle 61 is located above a predetermined engagement position by the protrusion 41 protruding from the outer peripheral surface engaging with the inner wall of the container 51 (near the lower end of the cylindrical nozzle 61). Movement in the direction of exiting from the cylindrical nozzle 61 is limited and prevented.
As a result, the protruding portion 41 prevents the connector body 3 from being lifted from a predetermined position even when receiving an upward reaction force from the siphon tube 9, so that the coupling portion 5 is screwed into the cylindrical nozzle 61 without receiving an excessive force. Thus, the male screw portion 17 and the female screw portion 63 can be easily screwed together to fix the connector 1 to the cylindrical nozzle 61 of the container 51.

Further, in the connector 1 of the embodiment shown in FIGS. 1 and 9, the screwing position of the female screw part 63 of the container 51 and the male screw part 17 of the coupling part 5 is arranged above the connector seal position of the cylindrical nozzle 61. Yes. That is, the position where the female threaded portion 63 of the cylindrical nozzle 61 and the male threaded portion 17 of the coupling portion 5 are screwed together is an O-ring 13 that functions as a connector seal that prevents liquid in the container 51 from leaking out of the container. Since the liquid in the container 51 flows out to the screwing position, it is difficult for the liquid in the container 51 to adhere to the screw portion.
Therefore, it is possible to prevent the liquid adhering to the female screw part 63 and the male screw part 17 at the screwing position from solidifying and inhibiting the smooth screwing of the coupling part 5.

Further, with respect to the screwing position of the female screw portion 63 of the container 51 and the male screw portion 17 of the coupling portion 5, for example, as in the connectors 1B and 1C of the seventh and eighth modifications shown in FIG. 10 and FIG. It may be disposed below the connector seal position of 61A. In the figure, reference numeral 3A denotes a connector main body, 5A denotes a coupling portion, 15A denotes a main body side projection, 19A denotes a coupling portion side projection, and 21A denotes a concave portion.
That is, the position of the above-described O-ring 13 may be above the screwing position between the female threaded portion 63 of the cylindrical nozzle 61A and the male threaded portion 17 of the coupling portion 5, and the connectors 1B and 1C configured in this way are also included. Similar effects can be obtained by providing any one of the anti-rotation mechanisms 31 and 31A to 31E of the above-described embodiments and modifications.
The connector 1B of the seventh modification shown in FIG. 10 is a configuration example without the protruding portion 41, and the connector 1C of the eighth modification shown in FIG.

Further, in the connector 1 'of the ninth modification shown in FIG. 12, the threaded portion of the male screw portion 17 and the female screw portion 63 is disposed on the upper portion of the O-ring 13, and the shaft is connected to the connecting portion of the coupling portion 5' to the main body 3 '. There is no directional stroke. That is, the connecting portion 5 of the connector 1 shown in FIG. 1 is slidable in the vertical direction within a range defined by the concave portion 21 formed on the connector main body 3 side and having the upper end portion serving as the main body side protrusion 15. In this modification, there is no portion corresponding to the recess 21, and a compact and simple structure is obtained.
Further, in the connector 1B ′ of the tenth modification shown in FIG. 13, the threaded portion of the male screw portion 17 and the female screw portion 63 is disposed at the lower portion of the O-ring 13 and the shaft is connected to the connecting portion of the coupling portion 5A ′ to the main body 3A ′. There is no directional stroke. That is, the connecting portion 5A of the connector 1B shown in FIG. 10 is slidable in the vertical direction within a range defined by the concave portion 21A formed on the connector main body 3A side and having the upper end portion serving as the main body side protrusion 15A. In this modified example, there is no portion corresponding to the recess 21A, and the structure is compact and simple.

In addition, the connector 1 ″ of the eleventh modification shown in FIG. 14 removes the main body side protrusion 15 and the coupling portion side protrusion 19 from the ninth modification shown in FIG. In this case, the coupling portion 5 ″ is used to fix the main body 3 ″ from above by screwing the male screw portion 17 into the female screw portion 63 of the cylindrical nozzle 61. That is, the female screw of the cylindrical nozzle 61 is fixed. The coupling part 5 ″ that is assembled by screwing into the part 63 can be assembled by sharing the central axis with the main body 3 ″ that is inserted into the cylindrical nozzle 61 and attached.
The connector 1 ″ having such a configuration has a compact and simple structure because there is no portion corresponding to the concave portion 21, and the coupling portion 5 ″ can be reused as a common part. That is, since the main body 3 ″ and the connecting portion 5 ″ are separate parts, efficient inventory management of the connector 1 ″ is possible, and in the case of the connecting portion 5 ″ having an erroneous connection preventing function, the connecting portion It is not necessary to exchange both 5 ″ in combination with the main body 3 ″, and it is possible to selectively use only various types of coupling portions 5 ″ depending on the scene and application.

<Reference example>
Then, the reference example is demonstrated based on FIGS. 15-17 about the container which concerns on this invention. In addition, the same code | symbol is attached | subjected to the part similar to embodiment mentioned above, and the detailed description is abbreviate | omitted.
A connector 1D shown in FIG. 15 is attached by being press-fitted into a cylindrical nozzle 61B provided on an upper portion of a container 51 for storing a liquid, and a siphon tube 9 having a lower end curved in a substantially horizontal direction along the bottom surface of the container 51. The tip opening 9a is inserted to the vicinity of the bottom of the container, and the liquid is drawn out from the container 51.

This connector 1D is provided with a flange portion 43 in which the connector main body 3B, to which the upper end portion of the siphon tube 9 is fixed, defines the amount of press-fitting, and the flange portion 43 is provided with a detent mechanism 31D. This anti-rotation mechanism 31D prevents the connector main body 3B from rotating with respect to the cylindrical nozzle 61B, and can employ the uneven engagement and chamfering engagement of the above-described embodiments and modifications. In the illustrated configuration example (see FIG. 15A), a detent mechanism 31D shown in FIG. 7 employing one chamfered engagement is employed.
For example, as shown in FIG. 16, the cylindrical nozzle 61B in this case is provided with a male screw portion 65 to which the cap 45 is screwed onto the outer peripheral surface. The cap 45 prevents the liquid in the container 51 from flowing out.
Further, the connector main body 3B of this embodiment is simply press-fitted and attached to the inner peripheral surface of the cylindrical nozzle 61B, and therefore there is no member or female screw portion 63 corresponding to the coupling portion 5 of the above-described embodiment. . Reference numeral 47 in the drawing is a seal member disposed between the cylindrical nozzle 61B and the connector main body 3B, and 45a is a seal member that is provided on the cap 45 and is in close contact with the flange portion 43.

  Also in the connector 1D configured as described above, the connector main body 3B, to which the upper end portion of the siphon tube 9 is fixed, includes the flange portion 43 that defines the press-fitting amount, and the flange portion 43 is provided with the rotation prevention mechanism 31D. The rotational direction position of the siphon tube 9 inserted by being press-fitted into the container 51 from the upper end portion of the cylindrical nozzle 61B is prevented from changing, and the residual liquid amount in the container 51 is kept at a predetermined position. Can suck out liquid. Accordingly, the connector body 3B and the siphon tube 9 can be prevented from rotating with respect to the cylindrical nozzle 61B, and the tip opening 9a of the siphon tube 9 can be held in a predetermined position and direction to extract the liquid to the maximum extent. .

Further, such a connector 1D is provided on the lower surface of the flange portion 43, for example, as in the modification of the present embodiment shown in FIG. 17, since the connector body 3B includes the flange portion 43 that defines the press-fitting amount. An anti-rotation mechanism 31F by engagement of the convex portion 43a and the concave portion 67a formed on the upper end surface 67 of the cylindrical nozzle 61B with which the lower surface of the flange portion 43 contacts via the seal member 47 is also possible.
The anti-rotation mechanism 31F that uses the flange portion 43 can also reverse the installation position of the concave and convex portions. A concave portion is provided in the flange portion 43, and the lower surface of the flange portion 43 is placed via the seal member 47. You may make it engage the convex part formed in the upper end surface 67 of the cylindrical nozzle 61 which touches.

As described above, the following effects can be obtained in the connectors according to the above-described embodiments and modifications, and the container including these connectors.
In the case of a connector that is screwed and connected by rotating the coupling portion 5 to the connector main bodies 3 and 3A that are press-fitted into the cylindrical nozzles 61 and 61A that are the openings on the container 51 side, the anti-rotation mechanisms 31 and 31A to 31E. However, it is possible to prevent the connector body 3, 3 </ b> A and the siphon tube 9 from being rotated due to the tightening of the coupling portion 5, and the orientation of the siphon tube 9 can be held at a predetermined position.
In the case of a connector that press-fits the connector main body 3B into the cylindrical nozzle 61B, the rotation preventing mechanisms 31, 31A to 31F prevent the connector main body 3B and the siphon tube 9 from rotating with respect to the cylindrical nozzle 61B, and the direction of the siphon tube 9 is changed. Hold in place.

As a result, the tip opening 9a of the siphon tube 9 inserted to the bottom in the container 51 is at the lowest (deep) predetermined position (for example, the recess 55a) in the container 51 set in advance and draws out the liquid to the maximum. Therefore, the amount of liquid remaining in the container 51 is surely minimized.
Therefore, the liquid storage container 51 including the connectors 1 and 1A to 1D described above is a siphon tube of the connectors 1 and 1A to 1D attached to the liquid drawing cylindrical nozzles 61, 61A and 61B provided in the upper part. 9 is prevented from rotating, and the amount of liquid remaining in the container 51 can be minimized to suck out the liquid.

Incidentally, it is desirable to form a notch (not shown) at the tip of the siphon tube 9 described above. Even when the inner surface of the container 51 is in contact with or close to the tip of the siphon tube 9, the notch allows liquid to flow into the siphon tube 9 from the notch. The flow rate of the liquid flowing into the tube 9 can be secured, and the liquid can be reliably pulled out from the container 51.
The present invention is not limited to the above-described embodiment. For example, for the connector main body 3 and the plug portion 7 described above, the gist of the present invention can be appropriately selected as an integral structure or a combined structure of separate parts. Changes can be made as appropriate without departing from the scope.

1, 1A to 1D, 1 ', 1 ", 1B' Connector 3, 3 ', 3A, 3A', 3B Connector body (main body)
5, 5 ', 5 ", 5A' coupling portion 9 siphon tube 9a tip opening 17 male screw portion (thread portion)
31, 31A to 31F Non-rotating mechanism 33, 33A, 43a Convex part 35, 35A, 67a Concave part 37 Chamfering part 39 Flat part 51 Container 55 Bottom face 61, 61A, 61B Cylindrical nozzle 63 Female thread part (container side thread part)
C Center axis

Claims (5)

A liquid storage container provided with a cylindrical nozzle for taking out liquid at the top,
A connector attached to the cylindrical nozzle and for drawing a liquid from the container by inserting a tip opening of a siphon tube having a lower end curved in a substantially horizontal direction so as to be along the bottom of the container to the vicinity of the bottom of the container. A coupling portion having a threaded portion to be screwed with the container-side threaded portion, and a main body that is inserted into and attached to the cylindrical nozzle and that can be assembled while sharing a central axis with the coupling portion. Equipped,
The coupling portion is engaged with the main body so as to be rotatable and slidable in the axial direction,
The main body is fixed to the cylindrical nozzle by being inserted into the cylindrical nozzle and then screwed to the cylindrical nozzle by rotating the coupling portion.
A container comprising a rotation prevention mechanism for preventing the main body, to which the upper end portion of the siphon tube is fixed, from rotating with respect to the cylindrical nozzle.   The container according to claim 1, wherein the anti-rotation mechanism is one set or a plurality of sets of concave and convex engaging portions and / or chamfer engaging portions formed on the cylindrical nozzle and the main body.   The container according to claim 2, wherein the detent mechanism is a set in which a circumferential position of the cylindrical nozzle is matched with a bending direction of the siphon tube.   The container according to claim 2, wherein the rotation preventing mechanism is a plurality of sets in which circumferential positions of the cylindrical nozzles are asymmetric.   5. The container according to claim 1, wherein a screwing position of the threaded portion of the container and the threaded portion of the coupling portion is disposed above a connector seal position of the cylindrical nozzle. .

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