JP2003292006A - Liquid jetting pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid jetting pump which is provided with a fixed sucking part A fixing a cylinder 6 whose lower part flaps down into a container 2 to the container by a mounting tube 7 screwed to the outer periphery of a neck 5 and a movable jetting part B wherein a jetting head 22 is fitted to the top end of a stem 21 projecting from within the cylinder 6 and, by which the movable jetting part A can be unscrewed in a positive and simple manner and which is excellent in handleability. <P>SOLUTION: A rotation prevention mechanism for preventing mutual rotation of the cylinder 6 and the container 2 is provided so as not to allow the fixed sucking part to idly rotate relative to the container when the movable jetting part is unscrewed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a liquid jet pump.

[0002]

2. Description of the Related Art As a liquid jet pump, a fixed suction portion, in which a cylinder hanging in a container body is fixed by a mounting cylinder screwed to the outer circumference of the neck of a container body, and can be pushed down from inside the cylinder in a biased state. Equipped with a movable spouting part in which the spouting head is fitted on the upper end of the protruding stem, and by vertically moving the movable spouting part, the liquid in the container body is sucked up by the action of the internal pump mechanism and spouted from the jetting port of the head. The composition is known.

In general, these are constructed so that they can be screwed and locked to a fixed suction portion in a state where the movable ejection portion is pushed down in consideration of prevention of inconvenient leakage of liquid during transportation and storage, or in consideration of downsizing. Is. Also, the mounting cylinder is rotatably mounted on the cylinder. Specifically, it can be rotated with the flange-shaped top plate extending inward from the upper edge of the peripheral wall placed on the upper surface of the cylinder flange. It is attached to the cylinder. When the cylinder is inserted into the container body and the flange is placed on the upper surface of the mouth and neck, the upper surface of the flange is pressed and fixed by the top plate of the mounting cylinder screwed to the outer circumference of the mouth and neck. There is.

[0004]

In the above-mentioned conventional pump, the movable jet portion is screwed and locked to the fixed suction portion during storage and transportation as described above, and it is unscrewed at the time of use. There are cases where the screwing strength is so great that it cannot be easily unscrewed.

The present invention has been made in view of the above points, and in this kind of pump, the movable ejection portion can be surely unscrewed, and a specially complicated structure is required as compared with the conventional product. The present invention proposes a liquid ejecting pump that can exhibit the above effects without the above.

[0006]

In the liquid jet pump according to the present invention, the lower portion is hung inside the container body 2, and the flange 8 projecting from the upper outer periphery is placed on the neck portion 5 of the container body. The cylinder 6 is screwed onto the outer circumference of the mouth / neck portion 5, and a flange-shaped top plate 11 is extended inward from an upper edge of a peripheral wall 10. The ejection head 22 is fitted to the fixed suction part A fixed to the body 2 and the upper end of the stem 21 protruding so that it can be pushed down from the inside of the cylinder 6 while being biased upward, and can be screwed and locked to the fixed suction part in the depressed state. A liquid jet pump having a movable jet portion B configured as described above, wherein a rotation preventing mechanism for preventing the cylinder 6 and the container body 2 from rotating relative to each other is provided. Configured as.

The liquid jet pump according to the second aspect of the invention is
The rotation preventing mechanism has a flange-like locking plate portion 35 inward from the upper end of the cylindrical portion 34 fitted non-rotatably to the outer periphery of the upper end portion of the mouth / neck portion 5 via the first engaging means 33. While extending, the upper surface of the locking plate 35 and the lower surface of the flange 8 are the second engaging means.
The liquid jet pump according to claim 1, wherein an annular member (32) engaged with each other via a ring (36) is engaged so as not to rotate with each other.

A liquid jet pump according to a third aspect of the invention is
The rotation preventing mechanism is configured such that an engaging cylinder portion 42 that is integrally provided so as to vertically extend from the outer peripheral edge of the flange 8 is non-rotatably fitted to the outer periphery of the upper end portion of the mouth / neck portion 5 via the first engaging means 33. The liquid jet pump according to claim 1 is configured.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

As shown in the drawing, the liquid jet pump 1 of the present invention
Is used by mounting it on the container body 2.
And a movable ejection part B.

As the container body 2, a mouth-and-neck portion standing upright on the upper end of the body portion is used. used.

The fixed suction portion A includes a cylinder 6 and a mounting cylinder 7.
The mounting cylinder 7 fixes the cylinder 6 to the container body 2. The cylinder 6 has a lower part hanging down inside the container body 2, and a flange 8 protruding from the upper part of the outer periphery is placed on the container body neck 5 through a packing 9. The mounting cylinder 7 is the mouth / neck 5
A peripheral wall 10 screwed to the outer periphery is provided with a flange-shaped top plate 11 extending inward from the upper edge of the peripheral wall 10. The top plate 11 presses the upper surface of the flange 8 to fix the cylinder 6 to the container body 2. There is.

In the illustrated example, the fixed suction portion A is fitted with a ring member 12 for screwing the movable ejection portion B to the upper end portion of the cylinder 6. The ring member 12 includes a fitting outer cylinder 13 fitted to the outer peripheral upper end portion of the cylinder 6 above the flange 8.
A top plate portion 14 having a window hole in the center is hung vertically from the middle portion of the back surface inside and outside, and is screwed to the outer surface of a peripheral wall 15 hung from the outer peripheral edge of the top plate portion 14.
16 are laid around. Further, a fitting inner cylinder 17 vertically extending from the inner surface of the back surface of the top plate portion 14 is fitted to the upper end of the inner circumference of the cylinder 6 while preventing rotation, and a guide cylinder for inserting the stem from the inner peripheral edge of the top plate portion 14. 18 are erected. Further, a suction valve (not shown) is provided at the lower end of the cylinder 6, and the upper end of the pipe 20 is fitted in the pipe fitting cylinder 19 which is vertically provided therebelow.

The movable jetting section B is provided with a jetting head 22 on an upper end portion of a stem 21 projecting so as to be able to be pushed down from the inside of the cylinder 6 while being urged upward. Movable ejection part B in the illustrated example
Has an annular piston 23 slidably fitted on the inner circumference of the cylinder 6 and protrudes from the lower outer circumference of the stem 21.
A discharge valve 24 is provided in the upper part of the inside of 21. Also a squirt head
22, the vertical cylinder 25 fitted to the outer periphery of the upper end of the stem 21 is hung from the rear surface of the top wall 26, and the thread 28 is laid around the inner periphery of the peripheral wall 27 hung from the peripheral portion of the top wall 26. A tip end of a nozzle cylinder 29 having a base end opened at an upper portion of the vertical cylinder 25 extends through the peripheral wall 27 to the front thereof, and an ejection port 30 is opened at the tip. Further, the lower end of the stem 21 is engaged with the upper end thereof, and the coil spring 31 interposed below the stem 21 constantly urges the upper end upward.

The movable jet portion B is constructed so that it can be screwed and locked to the fixed suction portion A while being pushed down. In the illustrated example, the thread 28 provided on the peripheral wall 27 of the ejection head 22 is configured to be screwed to the thread 16 of the peripheral wall 15 of the ring member while the movable ejection portion B is pushed down.

Further, due to the vertical movement of the movable jet portion B,
The built-in pump mechanism acts to suck up the liquid in the container body 2 into the cylinder, and ejects it from the ejection port 30 of the head via the stem 21. As the built-in pump mechanism, a well-known mechanism including the suction valve, the discharge valve 24, the piston 23, and the like described above can be adopted, but the invention is not limited to this, and various other well-known mechanisms can be adopted.

In the illustrated example, the liquid in the container body is directly ejected in the shape of a rod. However, for example, a mist forming mechanism may be provided at the tip of the nozzle to eject the liquid in the form of mist. Alternatively, a well-known mechanism may be used in which a mechanism for supplying air to the inside of the cylinder is provided in parallel and the mixture is mixed with a liquid to be ejected as bubbles.

In the present invention, in this type of liquid jet pump, a rotation preventing mechanism for preventing the cylinder 6 and the container body 2 from rotating relative to each other is provided. Although various forms of this rotation prevention mechanism can be adopted as long as the above requirements are satisfied, in the embodiment shown in FIG. 1, the rotation prevention mechanism is formed using the annular member 32.

The annular member 32 is interposed between the mouth / neck portion 5 of the container body 2 and the flange 8 of the cylinder 6, and the first engaging means 33 is provided on the outer periphery of the upper end portion of the mouth / neck portion 5. A flange-like locking plate portion 35 is extended inward from an upper end of a cylindrical portion 34 fitted so as to be vertically movable and non-rotatable, and the upper surface of the locking plate portion 35 and the lower surface of the flange 8 are secondly engaged. Through the coupling means 36, they are engaged so that they cannot rotate relative to each other.

In the illustrated example, the annular member 32 has a cylindrical portion 34 in which a plurality of circumferentially projecting ridges 37 are vertically arranged at equal intervals on the inner peripheral surface, and a locking member in which a plurality of radially projecting ridges 38 are radially projected on the upper surface. The one configured with the plate portion 35 is used. Further, the first engaging means 33 includes a plurality of ridges 40 vertically arranged in the circumferential direction on the inner peripheral surface of the annular recess 39 formed at the outer peripheral upper end portion of the mouth / neck portion 5, and a ridge 37 of the tubular portion 34. The second engaging means 36 is composed of a plurality of ridges 41 radially provided on the lower surface of the flange 8 of the cylinder 6 and a ridge 38 of the locking plate portion 35.

The tubular portion 34 is fitted on the outer periphery of the upper end of the mouth / neck portion 5 so as to be vertically movable and non-rotatable by engaging the protrusions from above, and the locking plate portion 35 via the packing 9. The annular member 32 is attached to the container body while being placed on the mouth / neck portion 5. Further, the flange 8 is non-rotatably placed by engaging the respective projections on the locking plate portion 35, and the upper surface of the flange 8 is pressed by the top plate 11 of the mounting cylinder 7 to fix the cylinder 6 to the container body 2. To do.

The liquid jet pump 1 constructed as described above is
For storage and transportation, as shown in FIG. 2, the thread 28 of the jet head 22 and the thread 16 of the ring member 12 are screwed together and the movable jet portion B is pushed down and screwed to the fixed suction portion A. deep. When the ejection head 22 is unscrewed from this state, the upward ejection force causes the movable ejection portion B to rise to the state shown in FIG. At this time, even if the screwing strength of the ejection head 22 with the ring member 12 is large, the cylinder 6 does not rotate with respect to the container body 2 and can be reliably unscrewed.

FIG. 6 shows another example of the rotation preventing mechanism. In this case, the engaging cylinder portion 42 integrally provided vertically from the outer peripheral edge of the flange 8 of the cylinder 6 is provided at the upper end portion of the mouth / neck portion 5. It is fitted to the outer periphery through first engaging means 33 so as to be vertically movable and non-rotatable.

In the illustrated example, the engaging cylinder portion 42 is the cylinder portion 34.
A ridge 37 similar to the above is vertically provided, and a first engaging means 33 similar to that of the above-described embodiment in which a ridge 40 having the same configuration is also vertically provided on the outer periphery of the upper end of the mouth / neck portion 5. In this case, the engaging tubular portion 42
The above is the same as the above-described embodiment except that the cylinder is mounted by engaging the respective protrusions from above the container body neck 5 so as to be vertically movable and non-rotatably fitted.

[0025]

As described above, the liquid jet pump of the present invention has the above-described structure, so that when the movable jet portion which is in the descending screwed state during transportation and storage is tried to be unscrewed, Even when the attachment strength is high, there is no inconvenience such as the rotation of the cylinder with respect to the container body, and the screw can be securely unscrewed.

A liquid jet pump according to a second aspect of the invention is
Since the above-mentioned unique effect can be exhibited only by slightly changing the structure of the lower surface of the flange 8 of the cylinder and the structure of the outer periphery of the container neck 5 and by mounting the annular member 32 having a simple structure, the cost increase can be ignored. Thus, it is possible to provide a pump that is extremely easy to use and has a great sense of trust for the user.

A liquid jet pump 1 according to a third aspect of the present invention.
Since the engaging cylinder portion 42 can be formed integrally with the cylinder 6, it also has the advantage of being easier to manufacture.

[Brief description of drawings]

FIG. 1 is a half sectional view showing an embodiment of the present invention.

FIG. 2 is a half cross-sectional view of a state in which a movable ejection portion of the embodiment is screwed down.

FIG. 3 is an enlarged cross-sectional view of a main part of the same embodiment.

FIG. 4 is a perspective view of an annular member of the same embodiment.

FIG. 5 is an enlarged sectional view of an essential part showing an engaging portion of the annular member of the embodiment.

FIG. 6 is an enlarged cross-sectional view of an essential part showing another embodiment of the present invention.

[Explanation of symbols]

2 ... container body, 5 ... mouth and neck, 6 ... cylinder, 7 ... mounting cylinder,
8 ... Flange, 10 ... Peripheral wall, 11 ... Top plate, 21 ... Stem, 22 ...
Injection head, 32 ... Annular member, 33 ... First engaging means, 34 ... Cylindrical part, 35 ... Locking plate part, 36 ... Second engaging means, 42 ... Engaging cylindrical part,
A ... Fixed suction part, B ... Movable ejection part

Claims (3)

[Claims] 1. A cylinder 6 in which a lower portion is hung inside a container body 2 and a flange 8 protruding from an upper portion of the outer periphery is placed on the mouth neck portion 5 of the container body is screwed onto the outer periphery of the mouth neck portion 5. With a mounting cylinder 7 in which a flange-shaped top plate 11 extends inward from the upper edge of the peripheral wall 10, a fixed suction portion A in which the upper surface of the flange 8 is pressed against the top plate 11 and fixed to the container body 2, and from inside the cylinder 6. A liquid jet pump including a jet head 22 fitted to an upper end of a stem 21 projecting so as to be able to be pushed down in a biased state, and a movable jet portion B configured to be screwed and locked to a fixed suction portion in a pushed state. In the liquid ejection pump, a rotation preventing mechanism for preventing the cylinder 6 and the container body 2 from rotating relative to each other is provided. 2. The rotation preventing mechanism is a flange-like member extending inward from the upper end of a cylindrical portion 34 fitted non-rotatably to the outer periphery of the upper end portion of the mouth / neck portion 5 via a first engaging means 33. The stop plate portion 35 is extended, and the annular member 32 in which the upper surface of the locking plate portion 35 and the lower surface of the flange 8 are engaged with each other via the second engaging means 36 so as to be mutually rotatable is interposed. The liquid jet pump according to claim 1, wherein 3. The rotation preventing mechanism prevents the engagement cylinder portion 42 integrally provided from the outer peripheral edge of the flange 8 from rotating on the outer periphery of the upper end portion of the mouth / neck portion 5 via the first engagement means 33. The liquid jet pump according to claim 1, which is fitted.