JP4098162B2 - Liquid jet pump - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid ejection pump, and more particularly, the liquid breakage after the liquid ejection is good, there is no liquid clogging in the head, etc., and it is easy to push down during the liquid ejection, and the ejection direction of the pressing head is The present invention relates to a liquid ejection pump that can always be directed in a predetermined direction.
[0002]
[Prior art]
As a liquid ejection pump, a fitting cap is fitted to the neck of the mouth and attached to the container body, and a pressing head is fitted to the upper end of the stem protruding so as to be able to be pushed upward above the fitting cap. It has been. In addition, as a pressing head for these pumps, a mounting cylinder member provided with a sliding cylinder communicating with the inside of the stem, and a valve chamber having an opening at the tip above the cylinder cylinder fitted to the outer periphery of the sliding cylinder A main body provided so as to be able to be pushed down with respect to the mounting cylinder member, a valve member that closes the ejection port in a forward biased state, and that defines a flow path from the inside of the cylinder cylinder to the ejection port, and a valve member, There has been proposed one having a specially-configured gutter member that is linked and opened by pushing down the head (for example, see Patent Document 1).
[0003]
These liquid ejection pumps equipped with pressing heads are capable of stable liquid ejection at all times, have good liquid drainage, have excellent sealing performance at the ejection port, and can be easily pushed down for long-term use. It is an excellent one that can stably eject liquid.
[0004]
[Patent Document 1]
JP 2002-326044 A (page 2-5, FIG. 1)
[0005]
[Problems to be solved by the invention]
The present invention is a further improvement of the pump provided with the pressing head of the special form described above, and the pressing head can always be directed in a predetermined direction with respect to the container body so that the liquid can be efficiently ejected. The structure for that purpose is also very simple, and this type of conventional pump has such features as stable liquid ejection, good liquid drainage, good sealing at the jet outlet, easy depression of the head, durability, etc. The present invention proposes an excellent liquid jet pump capable of exhibiting the effect.
[0006]
[Means for Solving the Problems]
The first means is configured as follows. That is, together and attached to the container body 4 is fitted a mounting cap 3 neck 2, pressing on the upper end of the stem 5 and depressible to protrude above biasing condition instrumentation wear cap 3 upward head 6 it was fitted and pressed head 6, the stem 5 causes fitted to the upper end portion, the hollow mounting member 16 which the sliding tube 21 standing in communication with the stem 5 from the top plate 20 which is horizontally provided on the stem 5 In addition, a valve chamber A having a spout 8 opened at the tip is provided above the cylinder cylinder 26 fitted to the outer periphery of the slide cylinder 21 so as to be slidable downward, and provided so as to be pressed down with respect to the mounting cylinder member 16 . a body 17, to close the ejection port 8 in forward forcing conditions within the valve chamber a, and a valve member 18 comprising defining a flow path to the ejection port 8 from the cylinder tube 26, the valve member 18 together thereby interlocking the upper to the rear end portion, abutting engagement was sealed on the top plate 20 top surface lower portion, and, against the hollow mounting member 16 The valve member 18 during depression of the main body 17 and a lever member 19 which is pivotally connected to swingably body 17 as draw backward, is smaller than pressing force pressing force of the stem 5 itself of the body 17 relative to the stem 5 that a liquid jet pump, as well as extend the locking plate 24 extending vertically at each side of the top plate 20 of the mounting tubular member 16, the engaging plate the peripheral body wall 17a inner surface sides pivotally non and vertical movement 24 outer surface engaged, Rutotomoni is suspended so as to be depressed within the cover cylinder 36 of the lower end of the peripheral body wall 17a provided upright on the instrumentation wear cap 3 of pressing head 6, a predetermined position of the peripheral body wall 17a and the cover tube 36 In this case, they are connected so that they can move up and down and cannot rotate .
[0007]
The second means is configured as follows. That is, in the first means, the cover cylinder 36 is composed of an inner cover cylinder 36a and an outer cover cylinder 36b, and the connection is a connection between the inner cover cylinder 36a and the pressing head peripheral wall at a predetermined position. Configured as it was.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0009]
The liquid jet pump 1 according to the present invention has a mounting cap 3 fitted to the neck 2 and mounted on the container body 4, and a stem 5 is provided above the mounting cap 3 so as to be pushed in an upward biased state. This is a type in which a pressing head 6 is fitted to the upper end. Further, the liquid in the cylinder 7 suspended into the container body 4 is ejected from the ejection port 8 of the press-down head 6 through the stem 5 when the press-down head 6 is pushed down.
[0010]
Than mounting the cap 3 the peripheral wall 9 upper edge is screwed to the neck 2 outer circumferential In the illustrated example, has extended the top wall 10 a raised central portion in a cylindrical shape, the raised portion 10a of the top wall 10 The stem 5 protrudes from a window hole 11 opened in the center. Further, the upper end of the cylinder 7 is fitted to the inner periphery of the raised portion 10a and the lower part is suspended in the container body 4, and the upper end of the suction pipe 15 is fitted to the lower end of the cylinder 7 and bent. The lower lower end opening 15a is positioned at the corner of the bottom of the container body 4.
[0011]
The pressing head 6 in the liquid jet pump 1 of the present invention includes a mounting cylinder member 16, a main body 17, a valve member 18, and a flange member 19.
[0012]
The mounting cylinder member 16 is fitted to the upper end portion of the stem 5, and a sliding cylinder 21 communicating with the inside of the stem is erected from a top plate 20 provided horizontally on the stem. In the illustrated example, a mounting cylinder 22 fitted to the upper end of the outer periphery of the stem is suspended from the back surface of the top plate 20, a sliding cylinder 21 communicating with the inside of the stem is erected at the center of the top plate 20, and the periphery of the top plate 20 A guide tube 23 is suspended downward from the section. In addition, on both sides of the top plate 20, a locking plate 24 extending vertically is extended. The locking plate 24 is provided for the purpose of preventing the main body 17 from wobbling, and in the illustrated example, the lower portion of the top plate 20 is configured as a part of the guide tube 23, and has two on the outer surface. The engaging groove 25 is provided vertically.
[0013]
The main body 17 is connected to the stem 5 via a mounting cylinder member 16 so as to be able to be pushed down. Above the cylinder cylinder 26 fitted to the outer periphery of the sliding cylinder 21 so as to be slidable down, the jet outlet 8 is provided at the tip. A valve chamber A is provided. In the example shown in the figure, the top wall 17b is extended from the upper end edge of the peripheral wall 17a, and the top wall 17b is formed in a cylindrical shape with a lower end, and a horizontal cylinder 27 having a front end opened at the front part of the peripheral wall 17a is projected rearward. The cylinder cylinder 26 is suspended from the bottom surface of the cylinder 27, and a later-described jetting outlet member is fitted into the horizontal cylinder 27 to define a valve chamber A. The cylinder cylinder is slidably lowered on the slide cylinder 21. 26 is fitted.
[0014]
The horizontal cylinder 27 has a space for accommodating the upper part of the flange member 19 and the locking plate 24 on both sides and the rear part, and a window hole is formed in the center of the rear wall so that the front side of the surrounding rear wall is in front. A sealing cylinder 28 is provided in a protruding manner, and a communication port communicating with the inside of the cylinder cylinder 26 is provided at the lower part.
[0015]
Further, both sides of the inner surface of the peripheral wall 17a are engaged with the outer surface of the locking plate 24 so as not to rotate but to move up and down. Various structures can be adopted for the engagement between the peripheral wall 17a and the locking plate 24 as long as the above conditions are satisfied. However, in the illustrated example, the engagement grooves 25 on the outer surface of the locking plate 24 are respectively engaged on both sides of the peripheral wall 17a. Each pair of engaging protrusions 29 is vertically provided.
[0016]
Further, the jet member 30 is fitted to the horizontal cylinder 27. This spout member 30 has a spout 8 opened at the tip to form a valve chamber A together with a horizontal cylinder. The rear part is liquid-tightly fitted to the front part in the horizontal cylinder 27 and the front part is tapered. The diameter is reduced, and a spout 8 is opened at the tip. Further, an annular protrusion protruding from the outer surface is brought into contact with and locked to the front surface of the main body 17, and a plurality of ribs in the circumferential direction are protruded inside.
[0017]
The valve member 18 closes the jet outlet in the valve chamber A in a forward biased state, and defines a flow path from the inside of the cylinder cylinder 26 to the jet outlet 8. The rear outer periphery is slidably fitted to the inner periphery of the seal tube 28, and the jet port 8 is closed in a forward biased state to define a flow path from the communication port to the jet port 8.
[0018]
In the illustrated example, it has a horizontal bar shape, and the skirt-like portion extends backward from the middle portion in the longitudinal direction of the outer periphery, and the outer peripheral edge of the reverse skirt-like portion folded back from the rear edge of the skirt-like portion slides on the inner periphery of the seal cylinder 28. It is movably fitted. The front end of the horizontal cylinder 27 is urged forward by a coil spring 31 interposed between the front surface of the rear wall of the horizontal cylinder 27 and the branching portion of the skirt-like portion, and the tip is pressed against the jet port 8 to be closed. Further, the rear end is protruded from the window hole, and an annular recess for engaging the flange member is horizontally provided in the protruding portion. Thus, a flow path is formed from the cylinder cylinder 26 through the communication port to the jet outlet 8 through the horizontal cylinder 27.
[0019]
The flange member 19 is pivotally mounted so as to be able to swing out so that the valve member 18 is pulled out rearward when the main body 17 is pushed down with respect to the mounting cylinder member 16, and is moved rearwardly through a window hole in the rear wall of the horizontal cylinder 27. The upper end is linked to the rear end portion of the protruding valve member 18 and the lower end portion is in contact with and locked to the top surface of the top plate 20.
[0020]
The eaves member 19 in the illustrated example has a form as shown in FIG. 4 and extends a bifurcated inclined plate portion 33 whose upper end portion is lowered forward from the lower end portion of the vertical plate portion 32 linked to the rear end portion of the valve member 18. In addition, the lower end portion of each inclined plate portion 33 is brought into contact with and locked to the upper surface of the top plate 20 on both sides of the sliding cylinder 21. In this embodiment, the flange member 19 and the valve member 18 are linked by fitting the annular recess of the valve member 18 into a notch provided at the center of the upper end of the vertical plate portion 32.
[0021]
Further, pivoting shafts 34 projecting on both sides of the refracting portion are fitted to the bearings on both sides so as to be rotatable. The bearings in the present embodiment are a pair of vertically suspended lower portions of the lower surface of the mounting plate 35 fitted just below the horizontal cylinder 27, with a predetermined interval, and each taper-shaped introducing recess is wider below the lower end of the inner side surface. A bearing recess is provided via the. The mounting plate 35 includes a fitting hole for fitting the cylinder cylinder 26 and a window hole through which the vertical plate portion 32 of the flange member 19 is swingably inserted, and the peripheral portion is fitted to the peripheral wall of the main body. Yes.
[0022]
The valve member 18 urged forward by the coil spring 31 always urges the linkage portion at the upper part of the vertical plate portion 32 forward, and the top plate 20 of the mounting cylinder member 16 is inclined by the depression of the main body 17. 33 is pushed up to rotate the eaves member 19 so that the valve member 18 is pulled backward against the forward biasing force of the coil spring 31.
[0023]
In the present invention, the pressing force of the main body 17 against the stem 5 is configured to be smaller than the pressing force of the stem itself. For this configuration, basically, the spring force of the coil spring 31 for biasing the valve member 18 forward is selected smaller than the coil spring (inside the cylinder) for biasing the stem 5 upward. These may be selected in consideration of the frictional force between the sliding cylinder and the cylinder cylinder, the frictional force when the saddle member swings, and the like.
[0024]
In the present invention, the liquid jet pump configured as described above is provided with a detent mechanism for restricting the rotation of the pressing head 6 relative to the container body 4. This anti-rotation mechanism is, for example, that the pressing head 6 is always in a fixed direction so that the direction of the spout 8 of the pressing head 6 matches the direction of the lower end opening 15a of the suction pipe 15 hanging down in the container body 4. The lower end portion of the main body peripheral wall 17a as the pressing head peripheral wall is suspended in a cover cylinder 36 erected on the mounting cap 3 so as to be able to be pushed down. The 17a and the cover cylinder 36 are connected so as to be vertically movable and non-rotatable at a predetermined position.
[0025]
As a specific means of linkage that can move up and down and cannot rotate, as shown in the example, the engaging projection 37 that protrudes at a predetermined position on the outer surface of the main body peripheral wall 17a moves up and down in a guide groove 38 that is provided vertically on the cover cylinder 36. Fit as possible. The guide groove 38 may have a kerf shape as in the embodiment of FIG. 1 or a concave groove shape as in the embodiment shown in FIG.
[0026]
In the illustrated example, the cover cylinder 36 includes an inner cover cylinder 36a and an outer cover cylinder 36b. In the illustrated example, a flange 36c is extended inwardly from the upper end of an inner cover cylinder 36a that is integrally raised from the peripheral edge of the upper surface of the mounting cap 3 and an outer cover cylinder 36b that is fitted with a lower portion on the outer periphery of the mounting cap. The inner peripheral edge and the upper end edge of the inner cover cylinder 36a are fitted, and a kerf-shaped guide groove 38 is vertically provided from the flange inner edge and the upper end to the lower end of the inner cover cylinder 36a . Although not shown, the cover cylinder is connected to the outer periphery of the mounting cap with the lower end fitted to the outer periphery of the mounting cap, and the upper end of the outer cover cylinder is connected to the upper end via a flange. You may comprise from the inner cover cylinder which contact | abutted and stopped. Even if a pair of the engaging protrusion 37 and the guide groove 38 are provided, the intended purpose can be achieved, but by providing at least two pairs at a predetermined position other than the opposing position, for example, more stable vertical movement of the main body 17 can be achieved. It can be done and positioning at the time of assembly becomes easy.
[0027]
In the liquid jet pump 1 configured as described above, when the pressing head 6 is pushed down from the state shown in FIG. 1, the pressing force of the stem 5 itself is larger than the pressing force against the stem 5 of the main body 17, so that the stem 5 does not drop first. The main body 17 is lowered with respect to the mounting cylinder member 16. At this time, the lower end portion of the flange member 19 is pushed up to the upper surface of the top plate 20 of the mounting cylinder member 16 and pivots about the pivot shaft 34, and the upper end portion pivots rearward so that the valve member 18 is moved to the coil spring 31. The nozzle 8 is moved backward against the resilience of the nozzle, and the spout 8 opens. Next, the stem 5 descends, and as the stem descends, the liquid in the pump passes through the cylinder cylinder 26 from the stem 5 and is ejected from the ejection port 8 to the outside through the flow path.
[0028]
Next, when the pressing of the pressing head 6 is released, the head is raised by the upward biasing force of the stem first. At this time, for example, the stem is raised before the hand pressing the upper surface of the pressing head 6 is released, and the ejection port 8 is kept open. Accordingly, at this time, the inside of the horizontal cylinder 27 is in a negative pressure state. Next, there is room for releasing the hand, and the valve member 18 moves forward by the elastic force of the coil spring 31 to close the ejection port 8, and accordingly, the main body 17 is moved upward with respect to the mounting cylinder member 16 by the flange member 19. To return to the original state.
[0029]
FIG. 5 shows another embodiment of the present invention. In this embodiment, a cover cylinder 36 is formed integrally with the mounting cap 3. In the present embodiment, the mounting cap 3 has a flange-like top wall 10 extending from the upper end edge of the peripheral wall 9 fitted to the outer periphery of the container body neck portion 2 and above the peripheral portion of the top wall 10. A cover cylinder 36 is erected integrally. In addition, a concave groove-shaped guide groove 38 is formed in the front portion of the cover cylinder 36, and the inner surface of the main body peripheral wall 17a, which is a pressing head peripheral wall, protrudes into the guide groove 38. The provided engaging projection 37 is fitted so as to be movable up and down. The other configuration is substantially the same as that of the embodiment of FIG.
[0030]
In addition, each said member is mainly formed with a synthetic resin unless there is particular notice, and can be formed using a metal, an elastomer, etc. together as needed.
[0031]
【The invention's effect】
As described above, the liquid jet pump according to the present invention has the above-described configuration, so that the pressing head can always move up and down the jet outlet in a predetermined direction. In the presence of the suction pipe having the opening at the lower end corner of the container body, if the jet outlet is opened in the same direction as the opening direction, it is efficient even if the residual liquid in the container is reduced. It becomes possible to erupt. Moreover, since the guide groove can be formed on the inner surface of the cover cylinder, the appearance from the outside is good and the assembling operation is very easy. In addition, the conventional pump of this type exhibits effects such as good liquid drainage, good sealing of the jet outlet, easy depression of the head, durability, and the like.
[0032]
The liquid jet pump of the second means, since it is possible to form the guide groove in the cover cylinder inner hidden outside the guide groove is not visible from the outside be formed in the cut groove shape, more A detent action that can move up and down with certainty can be exhibited.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of a pressing head according to the embodiment.
FIG. 3 is a side view of the same embodiment.
FIG. 4 is an enlarged perspective view showing a flange member of the same example.
FIG. 5 is a longitudinal sectional view of an essential part showing another embodiment of the present invention.
[Explanation of symbols]
2 ... neck and neck, 3 ... mounting cap, 4 ... container body, 5 ... stem,
6 ... press head, 8 ... spout, 16 ... mounting cylinder member, 17 ... main body, 17a ... peripheral wall,
18 ... Valve member, 19 ... Bridge member, 20 ... Top plate, 21 ... Sliding cylinder, 26 ... Cylinder cylinder,
36: Cover cylinder, 36a: Outer cover cylinder, 36c: Inner cover cylinder, A: Valve chamber

Claims (2)

In together and attached to the container body 4 is fitted a mounting cap 3 neck 2, the upper end of the stem 5 and depressible to protrude above biasing condition instrumentation wear cap 3 upward fitting depression head 6 wear and become, the pressing head 6, causes fitted on the stem 5 upper end, a hollow mounting member 16 provided upright sliding tube 21 that communicates with the stem 5 from the top plate 20 which is horizontally provided on the stem 5, A main body 17 provided with a valve chamber A having a spout 8 opened at the tip thereof and capable of being pushed down with respect to the mounting cylinder member 16 above the cylinder cylinder 26 fitted to the outer periphery of the slide cylinder 21 so as to be able to slide down. A valve member 18 that closes the jet port 8 in the valve chamber A in a forward-biased state and defines a flow path from the inside of the cylinder cylinder 26 to the jet port 8 , and a rear end of the valve member 18 together thereby interlocking the upper end section causes locked contact engagement the lower end to the top plate 20 top surface, and, the relative hollow mounting member 16 And a lever member 19 which is pivotally connected to swingably body 17 as withdrawing the valve member 18 rearward during depression of 17, the liquid ejection pressing force of the body 17 relative to the stem 5 is less than the pressing force of the stem 5 itself a pump, as well as extend the locking plate 24 extending vertically at each side of the top plate 20 of the mounting tubular member 16, the peripheral body wall 17a inside surface on both sides unrotatable and movable vertically locking plate 24 the outer surface engaged with, at Rutotomoni, at a predetermined position of the peripheral body wall 17a and the cover tube 36 is capable of hanging depressed within the cover cylinder 36 of the lower end of the peripheral body wall 17a provided upright on the instrumentation wear cap 3 pressing head 6 And a liquid ejection pump characterized by being connected in a vertically movable and non-rotatable manner. 2. The liquid jet pump according to claim 1, wherein the cover cylinder is composed of an inner cover cylinder a and an outer cover cylinder b, and the connection is a connection between the inner cover cylinder a and the pressing head peripheral wall at a predetermined position.

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