Content discharging mechanism and pump-type product equipped with this content discharging mechanism

Abstract

To provide a pump type content discharge mechanism which facilitates inventory management, improves productivity by setting a discharge amount according to a user request, and improves design.SOLUTION: There is provided a content discharge mechanism by which the content flows from a container body into a housing 2 with a pumping action and then flows out through a stem 5 that interlocks with the discharge operation, and which has a stroke changing part for changing the maximum movement stroke of the stem 5 accompanying the discharge operation. The stroke changing part includes a cylinder bushing 9 that engages with the housing 2 to prevent the stem 5 from slipping out of the housing 2, and an inner bushing 10 that engages with the inner peripheral surface to set a discharge operation start position of the stem 5. These cylinder bushing 9 and inner bushing 10 are accommodated and held inside the housing 2. The maximum movement stroke of the stem 5 is changed via a piston 7 and a piston guide 6 that contact the inner bushing 10.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to the selection setting of the discharge amount (discharge volume) per discharge operation in a content discharge mechanism that discharges the content accommodated in a container body to the outside.

[0002] In particular, the present invention relates to a content discharge mechanism that is prepared with a content discharge mechanism having a basic discharge amount set, and the discharge amount can be corrected and set according to demand for production.

Background Art

[0003] Conventionally, there has been a discharge container in which the discharge amount per pressing operation can be changed and set according to the use (see Patent Document 1).

[0004] In this discharge container, by attaching the required number of discharge amount adjusters having a C-shaped cross-section in the vertical direction of the outer periphery of the stem that hangs from the pump head (operation part) to operate the pump device, the vertical movement distance of the pump head is selected to set the discharge amount per pressing operation.

[0005] Since the discharge amount can be selected by the number of attached discharge amount adjusters, a pump device with the same specification is manufactured, and inventory management is performed in the assembled state. When there is a request, a discharge amount adjuster corresponding to the specification is attached to supply a discharge container that satisfies the target specification.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, with such a discharge container, it is necessary to spend time attaching the discharge amount adjuster later, and since the discharge amount adjuster is exposed on the appearance, the appearance of the entire pump-type product was poor.

[0008] Also, since only the end position of the pushing-down operation of the pump head is regulated by the discharge amount adjuster, the height of the stem before the operation, that is, the position of the pump head, is the same regardless of the amount of the set discharge amount, and even in the case of a small-capacity discharge setting, the height does not change and the discharge container cannot be made compact.

[0009] Also, if the user forgets to attach the discharge amount adjuster, the discharge amount may be more than the set amount, which may cause problems in using the contents.

[0010] The present invention enables management and storage in a state where the content discharging mechanism is assembled up to the stage of incorporating the outer cylinder bush into the common pump part regardless of its discharge amount, (11) eliminating the need for managing a large number of parts and facilitating inventory management, (12) enabling rapid mass production of a content discharging mechanism with a discharge amount set according to user requirements and improving productivity, (13) accommodating the discharge amount adjuster inside the common pump part to avoid being affected by the output adjuster and improving the design, and the like.

Means for Solving the Problems

[0011] The present invention solves the above problems as follows. (1) In a content discharging mechanism having a stroke changing part that changes the maximum movement stroke of a stem (for example, stem 5 described later) through which the content flows into a housing (for example, housing 2 described later) from a container body by a pumping action and the inflowing content flows out through the stem in conjunction with a discharging operation, the stroke changing part includes an outer bush (for example, cylinder bush 9 described later) that engages with the housing to prevent the stem from coming out of the housing, and an inner circumferential surface of the outer bush that engages with the stem The discharge operation start position in the above-described discharge operationIt is provided with an inner bush to be set (for example, the inner bush 10 described later). A configuration mode is used. (2) In the above (1), The outer bush and the inner bush are accommodated and held inside the housing, A configuration mode is used.

[0012] The content discharge mechanism having such a configuration and the pump-type product using the same are the objects of the present invention.

Effects of the Invention

[0013] By adopting the above configuration, the content discharge mechanism of the present invention (21) eliminates the need for managing a large number of parts and facilitates inventory management, (22) enables the rapid mass production of a content discharge mechanism with a discharge amount set according to user requirements, thereby improving productivity, (23) accommodates the discharge amount adjuster inside the common pump section to avoid being affected by the output adjuster and improve the designability, and so on.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0015] Embodiments of the present invention will be described with reference to FIGS. 1 to 3.

[0016] Note that the components with the following alphabetical reference signs (e.g., the inflow hole 2a) generally indicate that they are part of the component corresponding to the numerical part of the reference sign (e.g., the housing 2).

[0017] Here, in FIGS. 1 to 3, 1 is the common pump part of the content discharge mechanism composed of the housing 2, gasket 3, upstream valve 4, stem 5, piston guide 6, piston 7, spring 8, and cylinder bush 9 described later, 2 is a sheath-shaped housing (cylinder) that serves as a quantitative storage space area for the content, 2a is an inflow hole whose upper end serves as the valve seat of the upstream valve 4 described later and into which the container content flows, 2b is a vent hole that communicates the inside of the container with the external space area during the discharge operation to prevent the negative pressure inside the container, 2c is an inner annular protrusion provided on the inner peripheral surface of the housing 2 on the side of the inflow hole 2a, 3 is a gasket that engages with the outer peripheral surface of the housing 2, is held on the lower surface of the flange portion at the upper end of the housing 2, and holds the flange portion and the container opening in a liquid-tight manner, 4 is an upstream valve held at the bottom of the housing 2 by the biasing of the spring 8 described later, 4a is a plate-shaped upstream valve body that is displaceably connected to the upstream valve 4 main body via a deflecting portion, 5 is a cylindrical stem, 6 is a piston guide that engages with the lower end of the stem 5, 6a is a cylindrical hanging portion that engages with the inner annular protrusion 2c in a liquid-tight manner in the product's shipped state to prevent the outflow of the content, 7 is an annular piston (downstream valve body) that is held on the outer peripheral surface of the piston guide 6, slidably contacts the stem 5 and the housing 2 in a liquid-tight manner, and whose lower end of the inner cylindrical portion is separated from and abuts against the piston guide 6 to form a downstream valve, 8 is a spring provided between the piston guide 6 and the upstream valve 4, which holds the upstream valve 4 at the bottom of the housing 2 and biases the stem 5 and the downstream valve seat upward, 9 is a cylinder bush (outer bush) that engages with the inner side of the upper end of the housing 2 to set the uppermost position of the piston 7, 9a is the engaging portion on the inner peripheral surface of the cylinder bush 9, 10 is a discharge amount adjusting member of the content discharge mechanism, and is an inner bush that is engaged and fixed to the inner peripheral surface of the cylinder bush 9, 11 is a screw cap that is held on the outer peripheral portion of the upper end of the housing 2, is screwed onto the outer periphery of the cylindrical opening provided on the upper side of the container, and fixes the housing 2 to the container, 12 is a collar that engages with the upper end of the housing 2, holds the inner bush 10 and the screw cap 11, and guides the sliding of the stem 5, 12a is a screwing portion provided on the outer periphery of the upper end of the collar 12, 13 is an operation target of the user's discharge operation, is engaged with the upper end of the stem 5, and is an up-and-down movement type operation portion provided with a discharge port for the content from the stem 5, 13a is a screwing portion provided on the stem 5 connection side (lower surface side) of the operation portion 13, is screwed with the screwing portion 12a in the shipped state, and holds the operation portion 13 in the lowermost position, 13b is a tapered surface that is in close contact with the inner peripheral surface of the upper end of the collar 12 in the shipped state and blocks the inside of the container and the external space area, h is the shift of the initial position setting mode of the piston 7 due to the attachment of the inner bush 10, and is the difference distance between the lower end of the cylinder bush 9, the lower end of the inner bush 10, and the contact portion between the upper end of the outer peripheral seal portion of the piston 7, D is the cylinder diameter which is the inner diameter of the housing 2, s1 is the maximum operation stroke of the stem 5 etc. in the case of having the inner bush 10, which corresponds to the distance from the lower end of the cylindrical hanging portion 6a to the upper end of the inner annular convex portion 2c (see Fig. 1), s2 is the maximum operation stroke of the stem 5 etc. in the case of not having the inner bush 10, which corresponds to the distance from the lower end of the cylindrical hanging portion 6a to the upper end of the inner annular convex portion 2c (see Fig. 2) Each is shown.

[0018] Here, the housing 2, the stem 5, the piston guide 6, the cylinder bush 9, the inner bush 10, the screw cap 11, the collar 12, and the operation part 13 are made of, for example, plastic, and the gasket 3, the upstream valve 4, and the piston 7 are made of, for example, rubber or plastic, and the spring 8 is made of, for example, metal or plastic.

[0019] The basic features of the illustrated content discharge mechanism (common pump part 1 + inner bush 10) are (31) having an inner bush 10 for setting the stationary mode position of the stem 5 to select and set the discharge amount, (32) having an engaging part 9a to which the inner bush 10 is fixed, and including a cylinder bush 9 for preventing the stem 5 from coming off and the like.

[0020] Figure 1 shows the common pump part 1 with the inner bush 10 attached, and the discharge amount is changed and set.

[0021] The inner bush 10 is inserted between the stem 5 and the cylinder bush 9 from above and temporarily fixed to 9a on the inner peripheral surface of the cylinder bush 9.

[0022] The differential distance h of the piston 7 depression due to attaching the inner bush 10 is about 5.5 mm, and the maximum operation stroke s1 is about 12.6 mm. The cylinder diameter D is about 15 mm.

[0023] In addition, since the actual operation stroke is restricted by the contact with the collar 12 at the operation end position where the operation part 13 is depressed, it is about 11.8 mm, which is less than the maximum operation stroke s1, and the discharge amount per operation when the inner bush 10 is attached is about 2.0 ml.

[0024] Figure 2 shows the common pump part 1 in a state where the inner bush 10 is not attached, and after being assembled to this state, it is stock - managed as a single part.

[0025] The assembling method is as follows: Prepare an integrated part by engaging and fixing a piston guide 6 passed through a piston 7 to the lower end of a stem 5. Then, house an upstream valve 4, a spring 8, an integrated stem 5, etc. in a housing 2 with a gasket 3 in this order, and engage and fix a cylinder bush 9 to the upper end of the housing 2.

[0026] The housing 2 and the cylinder bush 9 cannot rotate relative to each other because the concave and convex parts arranged circumferentially on the mutually facing surfaces of each engage with each other.

[0027] In the assembled state, the spring 8 biases the piston guide 6 upward. The upward tapered surface of the piston guide 6 abuts against the lower end of the inner cylindrical part of the piston 7 and biases it upward, and the upper end of the outer peripheral seal part of the piston 7 abuts against the lower end of the cylinder bush 9.

[0028] Since these components are integrated without falling off, the common pump part 1 can be easily managed in stock as a single part. Note that the maximum operating stroke s2 in this state is about 18.1 mm.

[0029] Figure 3 shows a state where a screw cap 11, a collar ring 12, and an operation part 13, which are exterior parts, are attached to the common pump part 1 with the inner bush 10 of Figure 1 attached.

[0030] These screw cap 11, collar ring 12, and operation part 13 are exterior parts, and their shapes and colors often vary depending on the design of each product, so they often cannot be made common.

[0031] By fixing the collar ring 12 to the housing 2, the lower end of the inner cylindrical part of the collar ring 12 faces the upward annular step provided at the upper end of the inner bush 10 without a gap. Therefore, even if the inner bush 10 receives an upward force from the piston 7, its engagement with the cylinder bush 9 will not come off.

[0032] In the shipped state, the threaded portion 13a of the operation unit 13 is screwed and fixed to the threaded portion 12a of the collar 12. Then, the tapered surface 13b is in close contact with the inner peripheral surface at the upper end of the collar 12, and the cylindrical hanging portion 6a is in close contact with the inner annular convex portion 2c. In this state, it is attached to the container.

[0033] In this state, the vertical height becomes compact, and when attached to the container, the internal space of the container is blocked from the external space area, preventing leakage and deterioration of the contents contained in the container.

[0034] When attaching to the container, insert a dip tube (not shown) suitable for the depth of the container into the cylindrical portion below the inflow hole 2a of the housing 2, screw the screw cap 11 onto the opening of the container filled with the contents, and bring the flange portion at the upper part of the housing 2 into close contact with the upper end of the opening together with the gasket 3.

[0035] When the user starts using it, rotate the operation unit 13 in the shipped state to release the screwing with the collar 12. Due to the restoring force of the spring 8, the stem 5 moves upward, and the upper end of the outer peripheral seal portion of the piston 7 abuts against the lower end of the inner bush 10 to enter an operable stationary mode.

[0036] The collar 12 and the cylinder bush 9 cannot rotate relative to each other because the concave and convex portions arranged in the circumferential direction on the mutually opposing surfaces are engaged with each other. Even if the operation unit 13 screwed to the collar 12 is rotated, the collar 12 rotates together with the container body via the cylinder bush 9 and the housing 2 and does not rotate independently.

[0037] In the stationary mode position, the upper end of the outer peripheral seal portion of the piston 7 and the lower end of the inner bush 10 are in airtight contact with each other on the tapered surface, so the communication between the external space area and the inside of the container is blocked, and even if the container is overturned, the contents will not leak from around the stem 5.

[0038] Even when the inner bush 10 is not used, the common pump section 1 can be used for the content discharging mechanism. In this case, the stationary mode position of the operation section 13 is set to the highest position, and the discharge amount becomes approximately 3.0 ml, which is the maximum.

[0039] By preparing various inner bushes 10 with different lengths at the lower end, a content discharging mechanism with a predetermined discharge amount can be quickly produced.

[0040] When expanding the discharge amount, it is necessary to separately prepare a common core 1 with the lengths of the housing 2, spring 8, and stem 5 changed, but parts other than the common pump section 1 such as the inner bush 10 and screw cap 11 can be made common.

[0041] Of course, the content discharging mechanism of the present invention is not limited to the illustrated embodiment. For example, (41) Integrate the stem 5 and the piston 7 and separately provide a check valve type downstream valve in the stem 5 or the operation section 13. (42) Provide the spring 8 outside the housing 2. It may be done in this way.

[0042] Note that the numerical values for the differential distance h, cylinder diameter D, maximum operation strokes s1, s2, etc. are only examples of the content discharging mechanism of the present invention.

[0043] Examples of pump-type products equipped with the above content discharging mechanism include those for various applications such as detergents, cleaning agents, antiperspirants, coolants, muscle anti-inflammatory agents, hair styling agents, hair treatment agents, hair dyes, hair growth agents, cosmetics, shaving foams, foods, droplet-like substances (such as vitamins), pharmaceuticals, quasi-drugs, paints, gardening agents, repellents (insecticides), cleaners, deodorants, laundry starch, urethane foam, fire extinguishers, adhesives, lubricants, etc.

[0044] As the contents to be accommodated in the container body, those in various forms such as liquid, cream, gel, etc. are used. The components formulated in the contents are, for example, powdery substances, oil components, alcohols, surfactants, polymer compounds, active ingredients according to each use, water, and the like.

[0045] As the powdery substances, metal salt powders, inorganic powders, resin powders, etc. are used. For example, talc, kaolin, aluminum hydroxy chloride (aluminum salt), calcium alginate, gold powder, silver powder, mica, carbonate, barium sulfate, cellulose, mixtures thereof, etc. are used.

[0046] As the oil components, silicone oil, palm oil, eucalyptus oil, camellia oil, olive oil, jojoba oil, paraffin oil, myristic acid, palmitic acid, stearic acid, linoleic acid, linolenic acid, etc. are used.

[0047] As the alcohols, monohydric lower alcohols such as ethanol, monohydric higher alcohols such as lauryl alcohol, polyhydric alcohols such as ethylene glycol, glycerin, 1,3 - butylene glycol, etc. are used.

[0048] As the surfactants, anionic surfactants such as sodium lauryl sulfate, non - ionic surfactants such as polyoxyethylene oleyl ether, amphoteric surfactants such as lauryldimethylaminoacetic acid betaine, cationic surfactants such as alkyltrimethylammonium chloride, etc. are used.

[0049] As the polymer compounds, methylcellulose, gelatin, starch, casein, hydroxyethylcellulose, xanthan gum, carboxyvinyl polymer, etc. are used.

[0050] As the active ingredients for each use, anti-inflammatory and analgesic agents such as methyl salicylate and indomethacin, disinfectants such as sodium benzoate and cresol, pest repellents such as pyrethroid and diethyltoluamide, antiperspirants such as zinc paraphenolsulfonate, cooling agents such as camphor and menthol, anti-asthmatic agents such as ephedrine and adrenaline, sweeteners such as sucralose and aspartame, adhesives and paints such as epoxy resin and urethane, dyes such as paraphenylenediamine and aminophenol, oxidizing agents such as hydrogen peroxide solution, and fire extinguishing agents such as ammonium dihydrogen phosphate and sodium potassium bicarbonate are used.

[0051] Furthermore, suspending agents, ultraviolet absorbers, emulsifiers, moisturizing agents, antioxidants, sequestering agents, etc. other than the above-mentioned contents can also be used.

Explanation of Symbols

[0052] 1: Common pump section 2: Housing 2a: Inlet hole 2b: Vent hole 2c: Inner annular protrusion 3: Gasket 4: Upstream valve 4a: Upstream valve body 5: Stem 6: Piston guide 6a: Cylindrical hanging part 7: Piston 8: Spring 9: Cylinder bush 9a: Engagement part 10: Inner bush 11: Screw cap 12: Coloring 12a: Screwing part 13: Operating part 13a: Screwing part 13b: Tapered surface h: Differential distance D: Cylinder diameter s1: Maximum operating stroke when the inner bush 10 is present s2: Maximum operating stroke when the inner bush 10 is absent

Claims

1. In a content discharging mechanism provided with a stroke changing part that allows the content to flow from the container body into the housing by the pump action, the flowing-in content to flow out through a stem interlocked with the discharging operation, and to change the maximum movement stroke of the stem accompanying the discharging operation, the stroke changing part is an outer bush engaged with the housing to prevent the stem from coming out of the housing, and an inner bush engaged with the inner peripheral surface of the outer bush to set the discharging operation start position in the discharging operation of the stem, characterized in that it is a content discharging mechanism.

2. The outer bush and the inner bush are accommodated and held inside the housing, characterized in that it is the content discharging mechanism according to Claim 1.

3. A pump-type product characterized by comprising the content discharging mechanism according to any one of Claims 1 to 2 and containing the content. ​

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