JP6601899B2 - Tube backflow mechanism for contents inflow and pump type product equipped with this structure for tube backflow - Google Patents

Description

  According to the present invention, with the valve action based on the movement of the piston in conjunction with the operation portion in the cylinder, the contents of the downstream storage space area in the cylinder are released to the external space area, and the upstream storage space area Relates to a mechanism in which the content of the liquid flows backward to the content inflow tube.

  In particular, a cylinder with a piston that acts as a discharge valve and a suction valve is composed of a normal large-diameter cylinder with a discharge valve and a new small-diameter cylinder with a piston moving area upstream of the cylinder. A content inflow tube is attached to the cylinder inflow side.

  When the user sets the operating state of the contents discharge state by, for example, pressing down the operation part, the piston moves down, the discharge valve opens with the suction valve (check valve) closed, and the normal contents As the discharge takes place, the contents already stored in the small diameter cylinder flow back toward the tube.

  Due to the reverse flow of the contents stored in the small-diameter cylinder, various kinds of mixed substances (such as petals, gold powder, powder, dust, and foreign matter described later) clogged up to the tip of the content inflow tube and the mesh bush attached to it. Extruded and agitated with container body contents.

  It has been proposed for a long time to provide a cleaning filter at the distal end of the contents inflow tube of the manual pump mechanism (see FIG. 3 of Patent Document 1).

Japanese Utility Model Publication No. 62-12230

  The applicant of the present application is concerned that when such a content inflow tube is used, various kinds of mixed materials (petals, gold powder, powder, dust, foreign matter, etc.) with the contents of the container body are clogged at the tip. A wide range of studies was conducted.

  In the course of this study, the idea of reversal was to say that the clogged material at the tip of the content inflow tube could be pushed out again towards the container body.

  If the clogging is a decorative element such as a petal or gold powder mixed in the container body contents, for example, in a floating state, the container body is filled with the clogging in the tip part (such as a mesh bush described later) of the contents inflow tube. It can be reused by returning to the inside.

  In the present invention, as the piston moves during the contents discharge operation, the contents in the downstream storage space area of the large diameter cylinder are discharged into the external space area in the form of normal pump operation, and the upstream side of the small diameter cylinder. The contents in the storage space are made to flow backward toward the contents inflow tube.

  In the present invention, the contents in the upstream storage space area are made to flow backward to the tube side every time the contents are discharged, and the clogged material (petals, gold powder, powder, dust, The purpose is to simplify and ensure the separation of foreign objects.

In addition, the downstream storage space area that communicates with the external space area via the discharge valve is configured with a substantially large-diameter cylinder, and the upstream storage space area on the content inflow tube side that communicates with this via the check valve has a small diameter. Consists of cylinders.

  According to the present invention, the combination of the downstream large-diameter cylinder and the upstream small-diameter cylinder is provided with a check valve that is open from the upstream storage space area in the piston return operation at rest after the release operation of the contents is released. The purpose is to ensure the supply of contents to the downstream storage space.

The present invention solves the above-described problems by the following content inflow tube backflow mechanism.
(1) Based on the movement of a piston (for example, an upper piston passage member 2, an intermediate piston valve member 3, a lower piston check valve member 4 to be described later) in conjunction with an operation unit (for example, an operation button 1 to be described later) in a cylinder. By the valve action, the contents of the downstream storage space area (for example, downstream storage space area A described later) of the cylinder are released to the external space area, and the upstream storage space area (for example, upstream storage space area described later). B) is a mechanism in which the content of B) flows backward to a content inflow tube (for example, a tube 9 described later ) provided with a gap passing member (for example, a mesh bush 9a described later),
The cylinder is
The downstream storage space area between a discharge valve (for example, a later-described moving valve member 5) and a suction check valve (for example, a later-described cup rubber 6) for discharging contents ;
The upstream storage space area through which the contents flowing into the suction check valve pass and the contents are stored when stationary,
A cylindrical space region (for example, a lower end side cylindrical portion 8c described later) to which the tube for contents inflow is attached on the upstream side of the upstream storage space region;
The piston is
A hole (for example, a lateral hole 4b described later) that moves while closely contacting an inner circumferential surface of the cylinder constituting the upstream storage space and communicates the upstream storage space with the downstream storage space. was made from the upstream side piston member (e.g. lower piston check valve member 4 will be described later),
The check valve for suction is
Set the hole in a closed state by self-elasticity,
Along with the content release operation to the operation unit,
The contents of the downstream storage space area are discharged to the external space area through the open discharge valve,
And, the contents of the upstream storage space area flow back toward the contents inflow tube by the movement of the upstream piston member in the closed state of the suction check valve , and the clearance passage member The clogging is pushed outward,
The thing of a structure aspect is used.
(2) In (1) above,
The cylinder is
A large-diameter cylinder (for example, a large-diameter cylinder 8a described later) constituting the downstream storage space area;
A small-diameter cylinder (for example, a small-diameter cylinder 8b described later) constituting the upstream storage space area,
The thing of a structure aspect is used.

  The present invention is directed to a content inflow tube backflow mechanism having the above-described configuration and a pump-type product including the same.

The present invention provides the above problem solving means.
(11) It is possible to simplify and ensure the separation operation of clogging (petals, gold powder, powder, dust, foreign matter, etc.) at the tip of the content inflow tube.
(12) Ensuring the supply of contents from the upstream storage space area to the downstream storage space area via the open check valve in the piston return operation when stationary after the user releases the contents release operation Can
Has the effect of.

It is explanatory drawing which shows the stationary time of the pump type product provided with the tube backflow mechanism for contents inflow. It is explanatory drawing which shows the time of the action | operation which pushed down operation of the pump type product of FIG. It is explanatory drawing which shows the time of return operation | movement after pushing-down operation cancellation | release of the pump type product of FIG.

  The form for implementing this invention is demonstrated using FIG. 1 thru | or FIG.

  The constituent elements of the following reference numbers with alphabets (for example, the content outlet 1a) are in principle shown to be part of the constituent elements (for example, the operation buttons 1) of the reference numerals.

1-3,
1 is an operation button that can be moved up and down as an operation unit,
1a is a content outlet,
1b is an L-shaped internal passage leading to the discharge port,
2 is a cylindrical upper piston passage member in which an annular upper end portion of an inner cylindrical portion 5a, which will be described later, is in close contact with the inner peripheral surface of the lower end side, and the operation button 1 is fitted and held;
2a is formed at the position of the circumferential jump on the inner circumferential surface of the upper and lower middle portion of the upper piston passage member 2, each for passage of contents, a total of three inner circumferential surface longitudinal groove portions,
2b is formed in the circumferential direction of the inner circumferential surface below the inner circumferential surface longitudinal groove-shaped portion 2a, and the inner annular downwardly facing and holding the upper end surface portion of the inner cylindrical portion 5a described later when the pump mechanism of FIG. 2 is operated. Step,
2c is formed on the outer peripheral surface directly above the inner annular downward stepped portion 2b, and when the pump mechanism of FIG. 1 is stationary, the lower expanding ring tapered outer peripheral surface 2c that abuts on the below-described expanding ring tapered inner peripheral surface 8h,
Respectively.

Also,
3 is a lower opening sheath-like middle piston valve member fitted and held in the crest portion of the inner circumferential surface longitudinal groove-like portion 2a,
3a is formed on the outer peripheral surface of the middle piston valve member 3, and an outer annular step portion serving as a discharge valve that exhibits a valve action corresponding to when the pump mechanism is stationary (FIG. 1) and when it is activated (FIG. 2),
3b is an annular upright surface as a discharge valve which is continuously formed on the outer peripheral surface directly above the inner end of the outer annular step 3a and also exhibits a valve action;
3c is formed at a position in the circumferential direction immediately above the annular upright surface 3b, and a total of eight outer circumferential surface longitudinal groove portions for passing the contents,
3d is an annular flange formed below the outer annular step 3a and guided in the vertical direction while abutting against an inner peripheral surface of a small-diameter cylinder 8b described later.
Reference numeral 3e denotes a total of four longitudinal concave portions for passing the contents, which are formed at the circumferential jump positions on the outer peripheral end face of the annular flange 3d.
Respectively.

Also,
4 is fitted and held on the inner peripheral surface on the lower end side of the middle piston valve member 3, and the contents flow into only the downstream side (the downstream storage space area A described later) with the cup rubber 6 described later. A lower piston check valve member in the form of a lower opening sheath, as an upstream piston member,
4a is a sheath-like internal passage formed in the vertical direction in the lower opening mode,
4b is a total of two lateral hole portions for communicating the internal passage 4a with a downstream storage space area A described later,
4c is an outer annular step portion that is formed on the outer peripheral surface above the lateral hole portion 4b, and holds an upper inward ring convex portion 6a of a cup rubber 6 to be described later so as not to shift downward.
4d is a small-diameter reverse skirt-like portion formed on the lower outer peripheral surface of the lower piston check valve member 4 and in close contact with the inner peripheral surface of a small-diameter cylinder 8b described later,
4e is a base side of the small-diameter reverse skirt-like portion 4d, and an outer annular downward stepped portion that receives an upper end portion of a coil spring 7 to be described later.
Respectively.

Also,
5 is a movable valve member that exhibits a valve action for outflow of contents from a downstream storage space area A described later to an external space area between the outer annular step 3a and the annular upright surface 3b of the intermediate piston valve member 3. ,
5a is an inner cylindrical portion whose upper end surface is held in contact with the inner annular downward stepped portion 2b of the upper piston passage member 2 when the pump mechanism of FIG.
Reference numeral 5b denotes a lower end side of the inner cylindrical portion 5a. When the pump mechanism of FIG. 1 is stationary, a downstream storage space area A, which will be described later, is brought into contact with the outer annular step 3a and the annular upright surface 3b from the external space area. When the pump mechanism of FIG. 2 is shut off, the lower end annular valve action portion as a discharge valve that releases this close state,
5c is an annular large-diameter reverse skirt-shaped portion formed on the outer upper side of the inner cylindrical portion 5a and in close contact with an inner peripheral surface of a large-diameter cylinder 8a described later.
5d is formed between the inner cylindrical portion 5a and the large-diameter reverse skirt-shaped portion 5c, and the lower end portion of the sealing action of the upper piston passage member 2 that moves downward from the stationary state of the pump mechanism in FIG. An annular concave part consisting of a bottom part that enters and abuts,
5e is an annular large-diameter skirt-like portion formed on the outer lower side of the inner cylindrical portion 5a and in close contact with an inner peripheral surface of a later-described large-diameter cylinder 8a.
Respectively.

Also,
6 is a cylindrical cup rubber as a check valve which is attached to the lower piston check valve member 4 and allows the movement of contents from an upstream storage space area B described later toward the downstream storage space area A;
6a is a ring-shaped convex portion at the upper end that is engaged and held by the outer annular step 4c of the check valve member 4,
6b is a case where the content pressure in the upstream storage space area B, which will be described later, becomes larger than that in the downstream storage space area A (for example, the lower piston check valve member 4 is moved along with the release of the push-down operation of the operation button 1). A cylindrical shape that swells to the outside of the lateral hole portion 4b and connects the lateral hole portion / upstream storage space region B and the downstream storage space region A in the case of upward movement by the elastic action of a coil spring 7 described later). Check valve action part as a suction valve,
7 is disposed between an outer annular downward step portion 4e of the lower piston check valve member 4 and an inner annular step portion 8f of a cylinder 8 to be described later, from the operation button 1 to the lower piston check valve member 4. A coil spring that urges the integrated pump actuation member up to
Respectively.

Also,
8 accommodates a vertically moving integral member comprising an upper piston passage member 2, an intermediate piston valve member 3 and a lower piston check valve member 4, a moving valve member 5, a cup rubber 6 and a coil spring 7, and the like. Cylinder (large diameter cylinder 8a + small diameter cylinder 8b + lower end side cylindrical portion 8c) acting as a storage area / passage area of
8a is a large-diameter cylinder on the upper side of the cylinder that guides the middle piston valve member 3 and the moving valve member 5 in the vertical direction on its inner peripheral surface;
8b is a small-diameter cylinder that is continuously formed downward from the lower end side of the large-diameter cylinder 8a and guides the lower piston check valve member 4 in the vertical direction.
8c is a lower end side cylindrical portion which is continuously formed downward from the lower end side of the small diameter cylinder 8b and to which a tube 9 for taking in contents described later is attached.
8d is a ring-shaped portion that is continuously formed outward from the upper end side of the large-diameter cylinder 8a and is engaged and fixed to a cap 11 described later.
8e is formed in the upper peripheral surface portion of the large-diameter cylinder 8a, and a decompression preventing hole portion for preventing a decrease in internal pressure of the container body 10 to be described later accompanying the discharge of the contents,
8f is an inner annular step formed on the inner surface at the lower end of the small diameter cylinder 8b and receiving the lower end portion of the coil spring 7.
8g is a cylindrical collar portion that is fitted and fixed to the inner peripheral surface on the upper end side of the large-diameter cylinder 8a and demarcates the uppermost positions of the middle piston valve member 3 and the moving valve member 5;
8h is an inner peripheral surface of the upper end of the cylindrical collar portion 8g, and comes into contact with and engages with the lower piston ring outer peripheral surface 2c of the upper piston passage member 2 when the pump mechanism of FIG. A downwardly expanding ring-tapered inner peripheral surface that acts as
Reference numeral 8j denotes a lower end surface of the cylindrical collar portion 8g, which abuts and engages with an inner peripheral surface portion of the upper end of the large-diameter reverse skirt-like portion 5c of the moving valve member 5 when the pump mechanism of FIG. An upwardly expanding ring taper outer peripheral surface that acts as a dynamic stopper,
Respectively.

Also,
9 is a tube for inflow of contents attached to the lower end side cylindrical portion 8c of the cylinder 8,
9a is a mesh bush as a gap passing member that is attached to the tip of the tube 9 and captures decorative elements such as petals and gold powder in the contents to be discharged, powder, foreign matter, and dust.
10 is a container body containing various contents,
10a is a male thread portion formed on the outer peripheral surface of the neck portion of the container body and screwing and holding a female thread portion 11b to be described later.
10b is an ornamental gold powder mixed as a content in the container body 10,
11 is a cap that fits and holds the ring-shaped portion 8d of the cylinder 8 and is detachably attached to the neck of the container body 10.
11a is an annular concave portion that is formed at the upper end portion of the inner diameter surface of the cap and fits with the outer end portion of the ring-shaped portion 8d;
11b is a female screw portion formed on the inner peripheral surface of the large-diameter cap and screwed and held to the male screw portion 10a of the neck portion of the container body.
12 is an annular packing which is sandwiched between the ring-shaped portion 8d of the cylinder 8 and the upper end surface of the container body 10 and exhibits a content sealing action,
Respectively.

Also,
A is roughly a downstream storage space area between the moving valve member 5 and the cup rubber 6 in the cylinder 8;
B is generally an upstream storage space area between the lateral hole 4b in the small diameter cylinder 8b and a tube outflow portion described later,
f1 is the content outflow path to the external space when the pump is operating,
f2 is the content backflow path to the tube when the pump is operating,
f3 is a content inflow path to the downstream storage space area A and the upstream storage space area B in the return operation to the stationary state (FIG. 1) after the pump operation,
Respectively.

  Here, the operation button 1, the upper piston passage member 2, the middle piston valve member 3, the lower piston check valve member 4, the moving valve member 5, the cylinder 8, the tube 9 and the cap 11 are made of polypropylene, polyethylene, polyacetal, nylon. , Made of synthetic resin such as polybutylene terephthalate.

  The cup rubber 6 is made of rubber, the coil spring 7 is made of metal or synthetic resin, the container body 10 is made of synthetic resin or glass, and the packing 12 is made of rubber or synthetic resin. It is made of resin.

The basic features of the illustrated contents inflow tube backflow mechanism are:
(21) A cylinder 8 for storing and passing the contents,
An upstream storage space area B that is a content inflow portion from the tube 9 is defined, and a new small diameter cylinder 8b in which the lower piston check valve member 4 and the cup rubber 6 as the suction valve move up and down in the internal space area. When,
A downstream storage space area A which is a discharge content storage section on the downstream side of this small diameter cylinder is defined, and a large piston valve member 3 as a discharge valve and a moving valve member 5 move up and down in the internal space area. A diameter cylinder 8a;
Consisting of
(22) With the push-down operation (see Fig. 2) when the operation button 1 is activated,
The discharge valve is opened due to the increase in the content pressure based on the decrease in the volume of the downstream storage space area A, and the contents in the space area are released to the external space area,
In addition, the lower piston check valve member 4 integrated with the operation button 1 moves downward while being in close contact with the inner peripheral surface of the small diameter cylinder 8b, and the stored contents of the small diameter cylinder (upstream storage space area B). The object is pushed down to the tube 9, that is, the backflow of the contents through the tube 9 from the upstream storage space B to the container body 10 occurs.
That is.

  Due to the backflow to the tube 9, the mesh bush 9a and petals, gold powder, powder, dust, foreign matter and the like clogged in the vicinity of the mesh bush 9a flow out toward the container body 10, and the mesh clogging is eliminated.

  Here, in the case of petals, gold powder and the like that are positively accommodated as contents in the container main body 10, they are repeatedly used effectively.

  In addition, the stored contents of the small-diameter cylinder (upstream storage space area B) are the contents that have already flowed from the container body 10 through the tube 9 at the end of the previous content discharge operation.

  At this time, the content flowing into the upstream storage space area B flows into the downstream storage space area A of the large-diameter cylinder 8a by opening the check valve action portion 6b of the cup rubber 6 with the pressure. The contents flowing into the downstream storage space area A become the discharge target at the next content discharge operation.

When stationary in FIG.
(31) an integrated body of the operation button 1, the upper piston passage member 2, the middle piston valve member 3, the lower piston check valve member 4,
The movable valve member 5 in the form of being pushed up by the outer annular step 3a of the middle piston valve member 3 or the like,
Each of them is in the most moved position by the elastic action of the coil spring 7,
(32) This uppermost moving position is maintained by the engaging action of the upper end inner surface portion of the large-diameter reverse skirt-shaped portion 5c of the moving valve member 5 and the ring-shaped tapered outer peripheral surface 8j extending upward from the cylindrical collar portion 8g.
(33) In the downstream storage space area A and the upstream storage space area B, as described above, the contents have already flown at the end of the previous content discharge operation,
(34) The upper end of the outer peripheral surface of the small diameter reverse skirt 4d of the lower piston check valve member 4 is in close contact with the inner peripheral surface of the upper end of the small diameter cylinder 8b.
(35) The lateral hole portion 4b and the cup rubber 6 as the suction valve, and the outer annular step portion 3a, the annular upright surface 3b and the lower end annular valve action portion 5b as the discharge valve are all set in a closed state and are stored downstream. The stored contents of the space area A and the upstream storage space area B are discriminated.

  2 shows that when the user pushes down the operation button 1 at the time of operation, that is, the stationary state of FIG. 1, the contents stored in the downstream storage space area A are discharged from the discharge port 1a and the upstream storage space area B Is shown in a state where the stored contents of the gas flow backward toward the tube 9 and the container body 10.

In the operation of FIG.
(41) The middle piston valve member 3 and the moving valve member 5 constituting the discharge valve are elastically applied upward to the coil spring 7 in the closed state of the suction valve (lateral hole portion 4b and check valve action portion 6b). While moving against
(42) With this downward movement, the volume of the downstream storage space area A as the closed space area from the movement valve member 5 to the cup rubber 6 decreases, and the content pressure there increases, and as a result, the movement The valve member moves up relative to the middle piston valve member 3;
(43) The discharge valve opens with the relative upward movement of the moving valve member 5,
(44) When the discharge valve is opened, the contents of the downstream storage space A that has been pressurized with the downward movement of the middle piston valve member 3 are transferred to the “open discharge valve of the contents outflow path f1. -Outer peripheral surface vertical groove portion 3c-Annular space between the upper outer peripheral surface of the middle piston valve member 3 and the upper inner peripheral surface of the inner cylindrical portion 5a-Inner peripheral surface vertical groove portion 2a-Upper piston passage By the internal passage 1b of the member 2-the internal passage 1b of the operation button 1, it is discharged from the discharge port 1a to the external space area.

Also, along with the contents discharge operation of (41) to (44),
(51) The lower piston check valve member 4 moves down with the suction valve closed,
(52) With this downward movement, the contents already stored in the upstream storage space B flow backward toward the tube 9.

  (42) “The volume of the downstream storage space area A decreases” is because the space area spans the large diameter cylinder 8a and the small diameter cylinder 8b, and the large diameter cylinder corresponds to the downward stroke of the operation button 1. This is because the height at 8a decreases and the height at the small diameter cylinder 8b increases accordingly.

  As shown in (52) above, when the contents stored in the upstream storage space B flow backward, the clogging in the mesh bush 9a at the lower end of the tube is also pushed downward and returns toward the container body 10.

  Originally mixed with the contents of the container main body 10, the petals for decoration, gold powder, etc. in a state of being contained in the mesh bush 9 a and moving in the mesh bush 9 a also move inside the container main body by this backflow stirring action.

At the time of returning to the stationary state (FIG. 1) after releasing the pressing operation in FIG.
(61) First of all, the piston integral of the operation button 1, the upper piston passage member 2, the middle piston valve member 3 and the lower piston check valve member 4 leaves the moving valve member 5 in the form of the coil spring 7 The initial movement upward due to the elastic action of
(62) With this initial movement, the discharge valve between the middle piston valve member 3 and the movable valve member 5 is shifted from the open state to the closed state,
(63) With the further upward movement of the piston integrated body thereafter, the respective volumes of the downstream storage space area A and the upstream storage space area B increase, and the internal pressure in each of these space areas decreases,
(64) Due to the lower internal pressure in the downstream storage space area A than in the upstream storage space area B, the suction valve opens,
(65) In this open state of the suction valve, the contents flow into the downstream storage space area A and the upstream storage space area B where the internal pressure is reduced from the internal space area of the container body 10 via the tube 9.

  The contents flowing into the downstream storage space area A become the contents to be released in the next pressing operation of the operation button 1.

  Further, the inflow contents to the upstream storage space area B become the backflow target contents in the next pressing operation of the operation button 1.

  During the return operation of FIG. 3, the suction valve of the side hole 4b and the cup rubber 6 is opened per unit length when the middle piston valve member 3 and the lower piston check valve member 4 are moved upward. This is because the volume increase amount of the upstream storage space area B is larger than that of the downstream storage space area A.

  That is, the cup rubber 6 receives a large suction pressure from the downstream storage space area A having a large volume increase amount and a small suction pressure from the upstream storage space area B having a small volume increase amount. This is because it exceeds the elastic restoring force of the cup rubber itself.

  As described above, when the operation button 1, the upper piston passage member 2, the middle piston valve member 3, the lower piston check valve member 4, and the moving valve member 5 are moved upward, the coil spring 7 is first moved. Due to this elastic action, the whole unitary body is moved upward relative to the moving valve member.

  As the integrated body moves upward, the outer annular step portion 3a and the annular upright surface 3b of the middle piston valve member 3 come into close contact with the lower end annular valve action portion 5b of the moving valve member 5, and the discharge valve closes.

  After the discharge valve is closed, the operation button 1, the upper piston passage member 2, the middle piston valve member 3, the lower piston check valve member 4, and the entire moving valve member 5 are integrated into the elasticity of the coil spring 7. It moves upward by the action and returns to the stationary state of FIG.

  When this whole moves upward, as described above, the contents from the container main body 10 continuously flow into the downstream storage space area A and the upstream storage space area B, and the content pressure in each storage space area also increases. growing.

  And the check valve action part 6b is a side hole by self-elasticity in the stage which the content pressure of each of the downstream storage space area A and the upstream storage space area B (horizontal hole part 4b) with respect to this is substantially balanced, for example. The unit 4b returns to the closed state.

  That is, the suction valves of the lateral hole portion 4b and the check valve operating portion 6b are set in the same closed state as when stationary in FIG.

The procedure for assembling the illustrated contents inflow tube backflow mechanism is, for example,
(71) A cup rubber 6 is attached to the lower piston check valve member 4;
(72) The upper piston passage member 2 is engaged from above the middle piston valve member 3 through the moving valve member 5;
(73) The lower piston check valve member 4 is engaged with the lower end portion of the middle piston valve member 3;
(74) From above the cylinder 8 without the cylindrical collar portion 8g, the coil spring 7 and the piston (2 + 3 + 4 + 5 + 6) assembled in the above (73) are sequentially inserted, and the cylindrical collar portion 8g is attached.
(75) The packing 12 is attached to the lower side of the ring-shaped part 8d of the cylinder 8 assembled in (74).
(76) A cap 11 is attached to the ring-shaped portion 8d of the cylinder 8 assembled in the above (75), and an operation button 1 is attached to the upper piston passage member 2 protruding from above.
(77) Insert the tube 9 for inflow of contents into which the mesh bush 9a is attached in advance to the lower end side cylindrical portion 8c of the cylinder 8 assembled in the above (76).
And so on.

Of course, the present invention is not limited to the above embodiments.
(81) Instead of the push-down type operation button 1, a trigger type rotation operation lever or a tilt type tilt button is used.
(82) Instead of the cup rubber 6, a moving valve such as a ball valve and an elastic member that urges the moving valve toward the lateral hole portion 4b are provided.
(83) A gap passing member such as a mesh bush 9a is provided not at the tip of the tube 9 but at any part of the content passage area.
(84) Increasing or decreasing the numbers of the inner circumferential surface longitudinal groove portion 2a, the outer circumferential surface longitudinal groove portion 3c, the longitudinal concave portion 3e, and the lateral hole portion 4b.
You may do it.

  Pump type products to which the present invention is applied include cleaning agents, cleaning agents, antiperspirants, cooling agents, muscle anti-inflammatory agents, hair styling agents, hair treatment agents, hair dyes, hair restorers, cosmetics, shaving foams, foods , Droplets (such as vitamins), pharmaceuticals, quasi drugs, paints, horticultural agents, repellents (insecticides), cleaners, deodorants, laundry glue, lubricants, etc. .

  Examples of the components blended in the contents stored in the container main body include powdery materials, oil components, alcohols, surfactants, polymer compounds, active ingredients according to each application, water, and the like.

  As the powder, metal salt powder, inorganic powder, resin powder, or the like is used. For example, talc, kaolin, aluminum hydroxychloride (aluminum salt), calcium alginate, gold powder, silver powder, mica, carbonate, barium sulfate, cellulose, and a mixture thereof are used.

  As the oil component, silicone oil, palm oil, eucalyptus oil, camellia oil, olive oil, jojoba oil, paraffin oil, myristic acid, palmitic acid, stearic acid, linoleic acid, linolenic acid and the like are used.

  Examples of the alcohol include monovalent lower alcohols such as ethanol, monovalent higher alcohols such as lauryl alcohol, and polyhydric alcohols such as ethylene glycol, glycerin, and 1,3-butylene glycol.

  Surfactants include anionic surfactants such as sodium lauryl sulfate, nonionic surfactants such as polyoxyethylene oleyl ether, amphoteric surfactants such as lauryldimethylaminoacetic acid betaine, and cations such as alkyltrimethylammonium chloride. A surfactant is used.

  As the polymer compound, methyl cellulose, gelatin, starch, casein, hydroxyethyl cellulose, xanthan gum, carboxyvinyl polymer, or the like is used.

  Active ingredients according to each application include anti-inflammatory analgesics such as methyl salicylate and indomethacin, antibacterial agents such as sodium benzoate and cresol, insect repellents such as Hillesroid and diethyltoluamide, antiperspirants such as zinc oxide, Use refreshing agents such as camphor and menthol, anti-asthma drugs such as ephedrine and adrenaline, sweeteners such as sucralose and aspartame, and dyes such as paraphenylenediamine and aminophenol.

  Further, other than the above-mentioned contents, suspending agents, ultraviolet absorbers, emulsifiers, humectants, antioxidants, sequestering agents, etc. can be used.

1: Operation buttons (operation unit)
1a: Discharge port 1b: L-shaped internal passage 2: Upper piston passage member 2a: Inner circumferential surface longitudinal groove portion 2b: Inner annular downward stepped portion 2c: Expanded annular taper outer circumferential surface 3: Middle piston valve member 3a: outer annular step portion 3b: annular upright surface 3c: outer peripheral surface longitudinal groove portion 3d: annular flange portion 3e: longitudinal concave portion

4: Lower piston check valve member 4a: sheath-like internal passage 4b: lateral hole portion 4c: outer annular step portion 4d: small-diameter reverse skirt-like portion 4e: outer annular downward step portion 5: moving valve member 5a: inner cylinder -Shaped part 5b: lower end annular valve action part 5c: large-diameter reverse skirt-shaped part 5d: ring-concave part 5e: large-diameter skirt-shaped part

6: Cup rubber 6a: Upper inward ring convex portion 6b: Check valve action portion 7: Coil spring 8: Cylinder (8a + 8b + 8c)
8a: Large-diameter cylinder 8b: Small-diameter cylinder 8c: Lower end side cylindrical portion 8d: Ring flange-shaped portion 8e: Decompression prevention hole portion 8f: Inner annular step portion 8g: Cylindrical collar portion 8h: Downwardly expanding ring-tapered inner periphery Surface 8j: Upper spread ring outer peripheral surface

9: Tube for inflow of contents 9a: Mesh bush 10: Container body 10a: Male screw portion 10b: Gold powder 11: Cap 11a: Ring concave portion 11b: Female screw portion 12: Packing

A: Downstream storage space area B: Upstream storage space area f1: Contents outflow path to the external space area during pump operation f2: Contents backflow path to the tube during pump operation f3: Downstream storage space area A And contents inflow path to upstream storage space area B

Claims (3)

Due to the valve action based on the movement of the piston in conjunction with the operating portion, the contents of the downstream storage space area of the cylinder are released to the external space area, and the contents of the upstream storage space area are the clearance passage member. A mechanism for backflowing toward the contents inflow tube,
The cylinder is
The downstream storage space area between the discharge valve for discharging contents and the check valve for suction; and
The upstream storage space area through which the contents flowing into the suction check valve pass and the contents are stored when stationary,
On the upstream side of the upstream storage space area, a cylindrical space area to which the content inflow tube is attached, and
The piston is
The upstream moving close while the cylinder inner peripheral surface constituting the storage space zone, and consists of the upstream piston member having a hole for communicating the upstream reservoir space region and the downstream storage space area,
The check valve for suction is
Set the hole in a closed state by self-elasticity,
Along with the content release operation to the operation unit,
The contents of the downstream storage space area are discharged to the external space area through the open discharge valve,
And, the contents of the upstream storage space area flow back toward the contents inflow tube by the movement of the upstream piston member in the closed state of the suction check valve , and the clearance passage member The clogging is pushed outward,
A tube backflow mechanism for inflow of contents. The cylinder is
A large-diameter cylinder constituting the downstream storage space area;
A small-diameter cylinder constituting the upstream storage space area;
With
The tube backflow mechanism for contents inflow according to claim 1 characterized by things. The content inflow tube backflow mechanism according to claim 1 or claim 2 is provided, and the content is accommodated.
This is a pump-type product.

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