JP2013169984A - Pump structure unit for pump type product, pump type product including the same and operation part unit for pump type product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pump type product composed of a plurality of units, which allows a lid to be fitted or removed on or from an upper-side opening of a container-side unit from which an operating unit is removed, thereby facilitates product management during manufacturing and shipment, reduces the height of the product as a content packed product, and prevents content leakage.SOLUTION: A pump type product includes mutually independent units consisting of a container body 1 containing a content article, a pump structure unit (housing 2, stem lower part 6g, discharge valve 8, suction valve 5, housing fixing screw cap 3, etc.) attached to the container body 1, and an operating part unit (step upper part 6a, and spout 9) attached to the stem lower part 6g. When shipping and displaying the pump product with the operating unit not attached to the pump structure unit, an upper opening (annular projecting portion 3b) of the stem lower part 6g of the pump structure unit is closed with a lid member 4. This prevents the outside leakage of the content article from the container-side unit (container body 1+pump structure unit).

Description

  The present invention includes a housing having a stem lower portion, a discharge valve (downstream valve) and a suction valve (upstream valve) disposed therein and attached to an opening neck of the container body, and a screw cap for fixing the housing to the container body. , A pump structure unit for a pump-type product comprising a lid member at the upper end side of the lower part of the stem, and a pump-type product in which an upper part of the stem that can be fitted to the lower part of the stem and an operation part for discharging the contents It is related with the operation part unit etc.

  Inside the housing that is attached to the container body and accommodates the contents to be released next time, a suction valve, a discharge valve, and a stem that acts as a content passage area with the discharge valve are arranged. This type of pump product is widely used.

  The stem is attached to an operating part such as a spout and is provided with an upper part of the stem that seals with the upper inner reverse skirt part of the discharge valve, and a lower part of the stem that fits the upper part of the stem and exhibits the valve action with the discharge valve. It has become.

  As an application example of such a pump-type product, the present applicant increases the pressure reduction ratio of the content storage space area inside the housing when returning the stem after the content discharge operation, and increases the content suction force there. In addition, a pump mechanism that can reliably set the suction valve in a closed state except when the contents inflow operation is performed has been proposed (see Patent Document 1).

Japanese Patent No. 4873006

  In the present invention, the stem disposed in the housing together with the suction valve, the discharge valve, etc. is originally individually formed as a so-called two-piece shape such as an upper part of the stem and a lower part of the stem in order to secure an operating space area of the discharge valve. It focuses on being molded.

That is, outline pump type products,
・ Container body to contain contents ・ Housing, lower stem, discharge valve, suction valve, screw cap for fixing housing, etc., pump structure unit attached to container main body ・ Upper stem and operation part (spout), The operation unit unit is roughly divided into the lower part of the stem of the pump structure unit.

  And the lid member attached in the form which can be attached or detached freely to the upper opening part of the stem lower part of a pump structure unit is newly provided.

  Therefore, if the pump structure unit in which the upper opening is closed with this lid member is attached to the container body already containing the contents, or if the upper opening is closed with this lid member after the pump structure unit is attached, the container The contents are held in a completely sealed state in the side unit (container body + pump structure unit).

  The container side unit is a separate unit independent of the operation unit, and each unit can be managed individually.

  Further, when fitting the stem upper part to the stem lower part, the facing target part and the fitting target part generated between the pump structure unit and the operation part unit are formed in a straight shape with no concave part or convex part (identical Straight shape circumferential portion that is continuous in the longitudinal direction in the diameter mode)

In the present invention,
(11) It can be managed in units of operation unit, pump structure unit, container side unit at each stage such as manufacturing, shipping and product display of pump type products.
(12) Reduce the height of the pump-type product containing the contents to the height of the container-side unit.
(13) Prevent leakage of the contents of the container unit that contains the contents.
(14) Simplifies workability when a user or the like fits the upper stem of the operating unit to the lower stem of the pump structure unit.
For purposes.

The present invention solves the above problems as follows.
(1) A stem lower portion (for example, a stem lower portion 6g described later) that can be fitted to a stem upper portion (for example, a stem upper portion 6a described later) and a discharge valve (for example, a later described discharge valve) that exhibits a downstream valve action with the stem lower portion 8) and a suction valve (for example, a suction valve 5 described later) as an upstream valve is disposed inside, and the contents to be released next time are accommodated in an internal space area from the suction valve to the discharge valve, and A housing (for example, a housing 2 to be described later) provided with a bowl-shaped portion (for example, a ring-shaped portion 2a to be described later) as an attachment portion to an opening neck (for example, an opening neck portion 1a to be described later) of a container body (for example, a container body 1 to be described later). )When,
A screw cap (for example, a screw cap 3 to be described later) for fixing the housing to the container body in a state where the hook-shaped portion is sandwiched between the opening neck by screwing into the opening neck;
A lid member (for example, described later) for detachably closing an upper opening portion that functions as an inlet portion of the upper portion of the stem when the upper portion of the stem is fitted to the lower portion of the stem, following the downstream side from the internal space region. A lid member 4).
Use pump structure unit for pump type products.
(2) In (1) above,
The housing comprises:
An elastic member (e.g., coil spring 7 described later) for energizing the lower portion of the stem to set the discharge valve in a closed state;
Use pump structure unit for pump type products.
(3) In the above (1) and (2),
When the stem upper part is fitted to the stem lower part, the inner peripheral surface of the upper end side of the pump structure unit that faces the outer peripheral surface of the upper part of the abutting stem (for example, inner peripheral surfaces of the annular upright part 3c and annular hanging part 3d described later) )) And an upper outer peripheral surface (for example, an upper outer peripheral surface 6h described later) of the lower portion of the stem that fits with an inner peripheral surface of the upper portion of the stem (for example, an inner peripheral surface of a low convex portion 6d described later),
Each has a straight-shaped peripheral portion that is continuous in the longitudinal direction (for example, the vertical direction in the figure) in the same diameter mode,
Use pump structure unit for pump type products.
(4) The contents to be released are stored in the container body,
The screw cap of the pump structure unit according to any one of (1) to (3) is fixed to the container body, and the lid member of the pump structure unit is attached to the upper opening.
Use pump-type products.
(5) The synthetic resin used in the fitting state with the lower part of the stem in the state where the lid member of the pump structure unit according to any one of (1) to (3) is removed from the upper opening. Stem upper part (for example, stem upper part 6a described later),
The upper part of the stem and an operation part (for example, a spout 9 described later) formed integrally,
Use an operating unit for pump-type products.
(6) In (5) above,
An upper peripheral surface (for example, a later-described stem upper outer peripheral surface 6b) of the stem upper part and an upper peripheral surface (for example, a later-described upper outer peripheral surface 6h) of the lower part of the stem are fitted to an inner peripheral surface (for example, a later-described). The fitting action surface 6m)
Each has a straight-shaped peripheral portion that is continuous in the longitudinal direction (for example, the vertical direction in the figure) in the same diameter mode,
Use an operating unit for pump-type products.

  The present invention is directed to a pump structure unit for a pump-type product having the above-described configuration, a pump-type product using the pump structure unit, and an operation unit unit for the pump-type product.

The present invention is based on the above problem solving means.
(21) In each stage of manufacturing, shipping and product display of pump-type products, it is managed in units of operation unit, pump structure unit and container side unit.
(22) Reduce the height of the pump-type product that contains the contents as a management target;
(23) Prevent leakage of the contents of the container side unit,
(24) To simplify the fitting work between the lower stem and upper stem,
And so on.

It is explanatory drawing which shows individually the pump structure unit of the state which attached the cover member to the screw cap, and the operation part unit (spout unit) independent of this. It is explanatory drawing which shows a stationary mode of the pump type product which attached the spout unit to the pump structure unit of the state which removed the cover member from the screw cap. It is explanatory drawing which shows the operation mode (content discharge | release state) of the pump type product of FIG.

  An embodiment of the present invention will be described with reference to FIGS.

  The components of the reference numbers with alphabets (for example, the opening neck portion 1a) used in the above drawings are shown to be part of the components (for example, the container body 1) of the numeral portions of the reference numbers in principle.

1-3,
1 is a container body containing the contents discharged to the external space by a known pump action,
1a is the opening neck of the container body,
2 is a cylindrical housing for storing the contents to be released next time,
2a is a ring-shaped part formed on the upper end side of the housing,
2b is formed on the peripheral surface of the housing below the ring-shaped portion 2a, and supplies the outside air for preventing decompression to the inside of the container body 1 when the pump type product returns to the stationary mode after the operation mode ends. Holes for,
2c is a small diameter cylindrical portion formed on the lower end side of the housing,
2d is an annular taper portion (a receiving portion of a suction valve 5 to be described later) formed in a downward inward manner on the inner side of the upper end of the small diameter cylindrical portion 2c,
2e is an annular step formed on the inner peripheral surface of the housing above the annular tapered portion 2d;
Respectively.

Also,
3 is a cylindrical screw cap for screwing into the opening neck 1a of the container body 1 to fix the housing 2 to the opening neck.
3a is an outer cylindrical portion having an inner peripheral surface portion that is screwed with the outer peripheral surface of the opening neck portion 1a.
3b is formed on the upper end side of the inner peripheral surface of the outer cylindrical portion 3a, and an annular convex portion for fitting and holding the annular flange portion 2a of the housing 2,
3c is formed in an upward manner at the center portion of the top surface of the screw cap, and has an outer peripheral surface for screw coupling and a straight-shaped peripheral portion (vertical inner peripheral surface) continuous in the longitudinal direction with the same diameter mode. An annular upright,
3d is a straight-shaped peripheral portion that is formed in a downward direction at the center portion of the top surface of the screw cap, has an outer peripheral surface for housing fitting, and is continuous in the longitudinal direction in the same diameter mode from the inner peripheral surface of the annular upright portion 3c. An annular hanging part (upper and lower inner circumferential surface) (the uppermost position setting part of a discharge valve 8 described later),
Respectively.

Also,
Reference numeral 4 denotes a stem 6 (stem upper part 6a + stem lower part 6g) described later (see FIG. 1) in a separated state (see FIG. 1), which is screwed with the outer peripheral surface of the annular upright part 3c of the screw cap 3 to block the entire opening part of the annular upright part. That is, a lid member for setting the entire space area from the annular upright portion to the container body 1 to be a closed space area,
4a is an outer drooping cylindrical portion having an inner peripheral surface portion screwed with the outer peripheral surface of the annular upright portion 3c,
4b is an inner hanging cylindrical portion having an outer peripheral surface portion that comes into contact with the inner peripheral surface of the annular upright portion 3c,
5 is a suction valve (ball valve) placed in a form that can be moved toward and away from the ring tapered portion 2d of the housing 2 (movable up and down);
Respectively.

Also,
6 is a sheath-like stem (stem upper part 6a + stem lower part 6g) having a lower part disposed inside the housing 2 and provided with a passage for discharging contents,
6a is a cylindrical stem upper part constituting the upper side of the stem,
6b is a straight stem upper outer peripheral surface that is continuous in the vertical direction with the same diameter mode,
6c is formed in such a manner that the upper inner peripheral surface (small-diameter portion) of the upper portion 6a of the upper portion of the stem jumps in the circumferential direction, and is continuously connected to the upper end portion of the lower portion 6g of the stem. A total of four convex pieces in the vertical direction to set the grooves
6d is a lower end side portion of each of the convex piece portions 6c, and a low convex portion having a fitting action surface 6m to be described later that fits with an upper end side portion of the stem lower portion 6g,
6e is a stepped portion that is continuously formed in the inner direction from the upper end of the low convex portion 6d and contacts the upper end portion of the stem lower portion 6g;
6f is a diameter larger than the upper inner peripheral surface (the inner peripheral surface corresponding to the base of the convex piece 6c) of the stem upper portion 6a, and the lower end side inner periphery of the upper portion of the stem continuing below the low convex portion 6d. surface,
6g is a stem lower part which is set to the original stem shape by fitting and integrating with the low convex part 6d of the stem upper part 6a,
6h is a mating partner of the low convex portion 6d, and has a straight shape that is continuous downward from the upper end portion in the same diameter mode, the upper outer peripheral surface of the stem lower portion 6g,
6j is an annular concave portion formed on the lower outer peripheral surface of the stem lower portion 6g,
6k is a downward annular step formed on the lower back side of the annular concave portion 6j,
6m is a fitting action surface in the vertical direction formed in the low convex portion 6d of the stem upper portion 6a (a straight-shaped peripheral portion continuous in the vertical direction with the same diameter mode),
Respectively.

Also,
7 is a coil spring disposed between the annular step portion 2e of the housing 2 and the annular step portion 6k of the stem lower portion 6g to urge the stem 6 upward.
8 is an annular discharge valve disposed outside the stem 6 in close contact with the inner peripheral surface of the housing 2;
8a is an inner lower end side of the discharge valve, and a valve action portion that exhibits an opening / closing action with the annular concave portion 6j of the stem lower portion 6g,
8b is a portion that continues upward from the valve action portion 8a, and is an upper inner reverse skirt portion that moves up and down relatively while closely contacting the lower end side inner peripheral surface 6f of the stem upper portion 6a,
8c is an upper and outer reverse skirt portion that moves up and down while closely contacting the inner peripheral surface of the housing 2.
8d is a lower outer skirt that moves up and down while closely contacting the inner peripheral surface of the housing 2.
Respectively.

Also,
9 is a spout formed integrally with the stem upper part 6a and acting as a push-down operation part and a content passage part,
9a is a content passage to the external space,
9b is an outlet of the content passage 9a,
9c is a pressing operation surface of the spout,
10 is an annular packing which is set between the opening neck 1a of the container body 1 and the ring-shaped part 2a of the housing 2 and exhibits the sealing action of the contents of the container body.
11 is a suction pipe attached to the small-diameter cylindrical portion 2c of the housing 2 and acting as a content passage portion from the container main body 1 to the inside of the housing;
A is removal of the cover member 4,
B is a fitting of the stem upper part 6a to the stem lower part 6g,
Respectively.

  Here, the container body 1, the housing 2, the screw cap 3, the lid member 4, the stem 6, the discharge valve 8, the spout 9, and the suction pipe 11 are plastics made of polypropylene, polyethylene, polyacetal, nylon, polybutylene terephthalate, etc., respectively. It is made of.

  The suction valve 5 and the coil spring 7 are made of metal or synthetic resin, and the annular packing 10 is made of rubber or synthetic resin.

  As described above, the present invention pays attention to the fact that the stem 6 is composed of the stem upper part 6a directly integrated with the spout 9 and the stem lower part 6g exhibiting the downstream valve action together with the discharge valve 8. is there.

The basic features of the illustrated embodiment are:
(31) A housing 2 having a stem lower portion 6g, a discharge valve 8, a suction valve 5, a coil spring 7 and the like disposed therein, a screw cap 3, an annular packing 10, a suction pipe 11, and an annular shape of the screw cap 3. A single pump structure unit comprising a lid member 4 that is detachable by being screwed to the standing portion 3c is set.
(32) A container-side unit is set by screwing the pump structure unit into the opening neck 1a of the container body 1.
(33) A single spout unit in which a stem upper part 6a fitted to the stem lower part 6g and a spout 9 acting as a push-down operation part and a content passage part are integrally formed is set.
(34) After the lid member 4 is removed from the screw cap 3 (see A in FIG. 1), the stem upper portion 6a of the spout unit is fitted into the stem lower portion 6g of the pump structure unit (see B in FIG. 1). , Each opposing target portion (stem upper outer peripheral surface 6b, inner peripheral surface of annular upright portion 3c, inner peripheral surface of annular hanging portion 3d, etc.) and fitting target portion (fitting action surface 6m of low convex portion 6d, The upper outer peripheral surface 6h of the stem lower portion 6g) is composed of straight peripheral portions that are continuous in the longitudinal direction (the vertical direction in the drawing) in the same diameter mode.
And so on.

  In addition, the straight-shaped peripheral portion that is continuous in the longitudinal direction (the vertical direction in the figure) in the same diameter mode is, so to speak, a periphery composed of the same-diameter outer peripheral surface, the same-diameter inner peripheral surface, or a part thereof. It is a part.

  The above-described peripheral portion of the low convex portion 6d of the stem upper portion 6a corresponds to a fitting action surface 6m in the vertical direction in the figure that can be said to be the top portion of the low convex portion.

  The pump type product having the basic features (31) to (33) can be individually managed in units of the container side unit, the pump structure unit, and the spout unit at each stage of manufacturing, shipping, product display, etc. have.

  In particular, under this individual management situation, the height of the so-called “pump structure unit + container body 1” container-side unit can be reduced to the height of the pump-type product containing the contents.

  Further, by closing the opening of the screw cap 3 (annular upright portion 3c) of the container side unit already containing the contents with the lid member 4, it is possible to reliably prevent external leakage of the contents already contained in the container main body 1.

  The pump-type product having the basic feature (34) has a pump structure in which a user or the like removes the lid member 4 from the screw cap 3 at the stage of use and puts the spout unit downward from the opening without the lid member. It is possible to simplify workability when fitting the stem upper portion 6a to the stem lower portion 6g inside the unit.

  That is, the facing target part (34) (the upper peripheral surface of the stem upper part, the inner peripheral surface of the annular upright part 3c, the inner peripheral surface of the annular hanging part 3d, etc.) and the fitting target part (fitting operation of the low convex part 6d). Since no concave or convex portions are formed on the working surface 6m, the upper outer peripheral surface 6h of the stem lower portion 6g, etc., it can be said that there are almost no obstacles when the spout unit is put inside the pump structure unit. .

  Both the stationary mode and the operating mode of the pump mechanism shown in FIGS. 2 and 3 are known pump operating states.

  FIG. 2 shows a stationary mode of the pump mechanism, that is, a state in which the spout 9 of the pump mechanism that can be used by integrating the stem upper part 6a and the stem lower part 6g is not pushed down yet.

In this still mode,
(41) Upon completion of the previous content discharge operation, the content of the container body 1 (the content to be released next time) has already flowed into the internal space of the housing 2 via the suction pipe 11 and the suction valve 5 And
(42) The suction valve 5 is set in an upstream valve closed state in which the content flows into the internal space region and then moves down by its own weight and comes into contact with the annular tapered portion 2d of the housing 2,
(43) The discharge valve 8 is also set in the downstream valve closed state in which the valve action portion 8a is in contact with the annular concave portion 6j of the stem lower portion 6g.

  The discharge valve 8 of the above (43) is in a state where it is pressed down at the lower end portion of the annular hanging portion 3d of the screw cap 3 (the uppermost position of the discharge valve).

  FIG. 3 shows an operation mode of the pump mechanism, that is, a state where the spout 9 is pushed down and the stem 6 is moved downward.

  When the user presses the spout 9 (operation surface 9 c), the stem 6 integrated with the spout is moved down against the coil spring 7.

  As the stem 6 moves down, the volume of the housing internal space for content storage (the space from the suction valve 5 to the discharge valve 8) decreases, and the pressure of the stored content increases.

  Due to this pressure increase, the discharge valve 8 rises relatively in relation to the lower stem portion 6g, and the closed state of the valve action portion 8a and the annular concave portion 6j at the lower stem portion changes to the open state. To do. In addition, the suction valve 5 maintains a closed state.

  The discharge valve 8 that rises with respect to the stem lower portion 6g abuts on the lower end portion of the stem upper portion 6a, and thereafter moves downward together with the stem 6.

  As a result, as shown by the arrows in the figure, the contents contained in the housing inner space area are “annular open portion between the annular concave portion 6j and the valve action portion 8a—the upper outer peripheral surface 6h of the stem lower portion 6g and the discharge valve 8 An annular space between the upper inner reverse skirt portion 8b and a vertical groove-shaped space defined between the convex pieces 6c of the stem upper portion 6a, an internal passage of the stem upper portion 6a, and a content passage of the spout 9. Part 9a-discharge port 9b "is discharged to the external space area.

  When the push-down operation of the spout 9 is released, the spout and the stem 6 integrated therewith move upward due to the elastic action of the coil spring 7.

As the stem 6 moves up,
(51) The open state of the annular concave portion 6j of the stem lower portion 6g and the valve action portion 8a of the discharge valve 8 changes to the closed state,
(52) Since the volume of the internal space of the housing increases and becomes negative with respect to the inside of the container body 1, the suction valve 5 rises and separates from the annular tapered portion 2d of the housing 2, and as a result, The contents stored in the container main body 1 flow into the housing internal space from the separated portion,
(53) In order to prevent negative pressure inside the container body 1 due to the inflow of the contents into the housing internal space, outside air flows into the container body from the hole 2b of the housing 2.

  The inflow of contents into the housing internal space and the inflow of outside air into the container body are completed, and the mode returns to the stationary mode of FIG.

Of course, the present invention is not limited to the above embodiments, for example,
(61) At least one of the inner peripheral surface of the annular raised portion 3c, the inner peripheral surface of the annular hanging portion 3d, and the stem upper outer peripheral surface 6b is set in the same shape as the low convex portion 6d (fitting action surface 6m). ,
(62) The upper outer peripheral surface 6h of the stem lower portion 6g is set in the same shape as the low convex portion 6d (fitting action surface 6m), and the range of the low convex portion of the stem upper portion 6a to be fitted thereto is usually set. Set to a single inner peripheral surface,
(63) Instead of the push-down operation type spout 9, a tilt type operation unit is used.
(64) Use various types of valve members as suction and discharge valves,
You may do it.

  The pump-type products to which the present invention is applied include soaps, disinfectants, cosmetics, emulsions, detergents, shampoos, rinses, cleaning agents, cleaning agents, antiperspirants, cooling agents, muscle anti-inflammatory agents, hair styling agents, hair treatments. Agent, hair dye, hair restorer, cosmetics, shaving foam, food, droplets (such as vitamins), pharmaceuticals, quasi-drugs, arts, repellents (insecticides), cleaners, deodorants, There are various uses such as laundry and lubricants.

  The contents stored in the container body can be in various forms such as liquid, cream, gel, etc. Examples of ingredients blended in the contents include powdered substances, oil components, alcohols, interfaces Activators, 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 epoxy resins.

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

1: Container body 1a: Opening neck portion 2: Housing 2a: Ring-shaped portion 2b: Hole portion 2c: Small-diameter cylindrical portion 2d: Ring tapered portion 2e: An annular step portion

3: Screw cap 3a: Outer cylindrical part 3b: Ring convex part 3c: Ring-like standing part 3d: Ring-like hanging part

4: Lid member 4a: Outer drooping cylindrical part 4b: Inner drooping cylindrical part 5: Suction valve

6: Stem (stem upper part 6a + stem lower part 6g)
6a: Stem upper part 6b: Stem upper outer peripheral surface 6c: Convex piece 6d: Low convex part 6e: Step part 6g: Lower end side inner peripheral surface 6g: Stem lower part 6h: Upper outer peripheral surface,
6j: ring concave part 6k: annular step part 6m: fitting action surface

7: Coil spring 8: Discharge valve 8a: Valve action part 8b: Upper inner reverse skirt part 8c: Upper outer reverse skirt part 8d: Lower outer skirt part

9: Spout,
9a: Contents passage portion 9b: Discharge port 9c: Push-down operation surface 10: Annular packing 11: Suction pipe A: Removal of lid member 4 B: Fitting attachment of the stem upper portion 6a to the stem lower portion 6g

Claims (6)

A stem lower part that can be fitted to the upper part of the stem, a discharge valve that exhibits a downstream valve action between the lower part of the stem, and a suction valve as an upstream valve are arranged inside, and from the suction valve to the discharge valve A housing that contains the contents to be released next time in the internal space, and has a bowl-shaped portion as an attachment portion to the opening neck of the container body;
A screw cap for fixing the housing to the container body in a state in which the flange-like portion is sandwiched between the opening neck by screwing into the opening neck;
A lid member for detachably closing an upper opening that acts as an inlet portion of the upper portion of the stem when the upper portion of the stem is fitted to the lower portion of the stem, following the downstream side from the internal space region; Become,
A pump structure unit for pump-type products. The housing is
An elastic member for energizing the lower portion of the stem to set the discharge valve in a closed state;
The pump structure unit for a pump-type product according to claim 1. The upper end side inner peripheral surface of the pump structure unit that faces the outer peripheral surface of the stem upper portion when the upper stem portion is fitted to the lower stem portion, and the upper end side of the lower stem portion that fits the inner peripheral surface of the upper stem portion The outer surface is
Each has straight-shaped peripheral portions that are continuous in the longitudinal direction in the same diameter mode,
A pump structure unit for a pump-type product according to claim 1 or 2. Contains the contents to be released in the container body,
The screw cap of the pump structure unit according to any one of claims 1 to 3, is fixed to the container body, and the lid member of the pump structure unit is attached to the upper opening.
This is a pump-type product. A stem upper part made of a synthetic resin used in a fitted state with the lower part of the stem in a state where the lid member of the pump structure unit according to any one of claims 1 to 3 is removed from the upper opening,
The upper part of the stem and an operation part integrally formed,
An operation unit for pump-type products. The outer peripheral surface of the upper portion of the stem and the inner peripheral surface of the upper portion of the stem that fits with the outer peripheral surface of the upper end side of the lower portion of the stem,
Each has straight-shaped peripheral portions that are continuous in the longitudinal direction in the same diameter mode,
The operation unit unit for a pump-type product according to claim 5.

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