JP2009143617A - Normal standing/reversing mechanism and pump type product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To positively release the absorbed state when the absorption between a movable valve and a valve seat before a change continues even after the normal standing/reversing change, in a normal standing/reversing pump mechanism using respective movable valves for normal standing/reversing. <P>SOLUTION: An intra-cylinder upstream side housing space region 22 of which the capacity changes in response to the movement of a piston 4 is installed in a space between flowing-in passage selection operating sections 10 and 11, and upstream valve operating sections 3a and 8. Then, at the time of a discharging operation, a content in the upstream side housing space region is made to flow in the reverse direction (B direction) by the flowing-in passage selection operating sections. Also, accompanying the change from the normal standing state to the reverse state shown in figure, the movable valve 14 which drops toward the opening section 11a is made to collide with a movable valve 13 which has been in contact with the valve seat 10b at the time of the normal standing. By a content reverse flowing operation and the movable valve colliding operation, the movable valve 13 which is being sucked by the valve seat 10b at the initial stage of the change to the reverse state drops downward in figure. Thus, a content flowing-in path (flow passage in D direction) from the inside of the container to an intra-cylinder downstream side space region 21 at the time of the completion of the discharging operation is ensured. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention includes a pump operating unit that discharges the contents of the downstream storage space region and the storage space region in the cylinder to the external space by a valve action based on the movement of the piston in conjunction with the operation unit in the cylinder,
An upright inflow passage to the cylinder, a first valve structure that opens and closes a part of the upright inflow passage by dropping based on the weight of the first moving valve, an upright inflow passage to the cylinder, and a second An inflow passage selection actuating portion having a second valve structure that opens and closes a part of the inverted inflow passage by dropping based on the dead weight of the moving valve;
The present invention relates to a normal inverted pump mechanism.

  In order to ensure a normal content discharge operation in this upside-down pump mechanism, each of the first and second moving valves is surely dropped in a form corresponding to the upright / inverted state of the container, and each valve action It is necessary to switch the open / closed state of the part genuinely, and the present invention meets such a demand.

  In the present specification, the terms “upper” and “lower” refer to the positional relationship in the upright state of the pump-type product (see FIGS. 1, 2, 3, and 7).

  Therefore, the actual vertical position in FIGS. 4, 5, 6 and 8 showing the inverted state of the pump type product and the terms with “upper” and “lower” in the specification (for example, upper piston member, lower The upper and lower concepts of the side piston member, the upper bush, the lower bush, the upper ball valve, the lower ball valve, etc.) are opposite to each other. However, the terms “upstream” and “downstream” are in the overall flow as the contents of the container body are discharged into the external space and do not depend on the upright / inverted nature of the pumped product.

  The “static mode” is a state in which the operation button is held at its initial position (upward movement position) and the container contents are not released to the external space. The “operation mode” is a state in which the operation button is pressed. It is a state in which it has moved from its initial position.

  The above-described pump operating unit based on the movement of the piston (stem) in conjunction with the operating unit in the cylinder, the first valve structure for opening and closing a part of the upright inflow passage to the cylinder, and the inverted inflow to the cylinder The applicant of the present invention has already proposed a forwardly inverted pump mechanism including an inflow passage selection operation portion including a second valve structure that opens and closes a part of the passage (see Patent Document 1).

  Here, a downstream valve action part is formed in the piston of the pump operating part, and an upstream valve action part is formed on the inflow side of the contents of the cylinder. Then, the contents stored in the cylinder between the downstream valve action part and the upstream valve action part are released into the external space by the well-known pump operation at the time of the next pressing operation of the operation part.

  Each of the first and second valve structures of the inflow passage selection operation portion includes a moving valve that drops by its own weight and a valve seat that receives it. Each valve seat has an opening.

  In the upright mode of this upside-down pump mechanism, the second valve structure is closed and the inverted inflow passage is disconnected from the cylinder, and in the inverted mode, the first valve structure is closed and The vertical inlet passage and the cylinder are blocked.

The first and second valve structures are so-called seesaw type in which one of them shifts to “open” and the other shifts to “closed” in accordance with the selective setting of the pumped product in the upside-down state. Exhibits changes in behavior.
JP 2005-288210 A

  The applicant of the present application has verified the operation of the pump-type product having the above-described upside-down pump mechanism, and as a result, the content discharge state becomes unstable (for example, the liquid as the content cannot be sucked up or jetted). confirmed.

  As a result of consideration of the internal structure of the normal inverted pump mechanism and the like, the cause of this instability is that each moving valve of the first and second valve structures in the above-described inflow passage selection operation unit is upright / inverted of the pump container. To find out that it did not fall reliably in response to changes in

  That is, when the pump container is changed from one of its upside-down (arbitrary) states to the other state, the moving valve that has been in contact with the valve seat and closed until the change is changed even after the change. There were cases where it was adsorbed by the seat and held in a closed state.

  The reason for the occurrence of this adsorption phenomenon is that the surface tension of the contents that were in the vicinity of the contact portion between the moving valve and the valve seat before the normal inverted change after the normal inverted change, the moving valve and the valve seat It is conceivable that the contents are fixed or solidified in the vicinity of the abutting portion.

  If the adsorbed state of the transfer valve continues even after the pump container is changed to the upside-down position, the transfer valve originally falls and changes to the “open” state between the valve seat and the return operation after the operation button is pressed. Next, the following essential operation step is prevented such that the contents of the container main body flow into the piston-accommodating cylinder (= the contents storage space between the downstream valve action part and the upstream valve action part in the cylinder). It will be. The contents stored in the contents storage space are discharged to the external space at the next operation.

  As a result of the inflow operation of the contents being blocked, the contents necessary for the next discharge operation are not supplied from the container main body to the content storage space in the cylinder, causing a defective discharge operation.

The present invention, in a normal inverted pump mechanism,
(11) By forming the upstream valve action portion, which is a component of the content storage space area, on the piston that moves in the cylinder, not on the content inflow side of the cylinder as in Patent Document 1, Secure a space as a content storage area upstream of the piston,
(12) The first and second moving valves and the first and second valve seats in the inflow passage selection operation portion are changed to the normal inverted one of the moving valves that fall to the valve seat after the normal inverted change. Colliding with the other moving valve that remains adsorbed on the valve seat in the previous state,
Of the embodiment.

And according to each aspect of these (11) and (12),
(21) When the operation mode is set, the piston moves to drive the contents in the space area upstream of the cylinder toward the first and second moving valves (in the opposite direction to the original flow). Due to the momentum of the reverse flow, the moving valve that remains in the suction state before the change of the normal upside down is pushed in the direction of the suction release and falls by its own weight,
(22) Due to the collision between the moving valves, the moving valve that remains in the suction state before the normal upside-down change is released from its suction and falls by its own weight.

  In the present invention, the moving valve in which the suction state before the change in the normal upside-down state continues to flow back to the moving valve side in accordance with the operation mode setting operation, or the original drop operation in the normal upside-down change. By the collision force from other moving valves exhibiting a drop and dropping, which causes malfunction of each valve structure provided in the upright inflow passage and the inverted inflow passage of the inflow passage selection operation part of the upright pump mechanism The purpose is to eliminate.

The present invention solves the above problems by using the following normal inverted pump mechanism.
(1) A downstream storage space in the cylinder by a valve action based on movement of a piston (for example, a piston 4 described later) in a cylinder (for example, a cylinder 5 described later) in conjunction with an operation unit (for example, an operation button 1 described later). A pump actuating part that discharges the contents of the region (for example, a cylinder-side downstream space region 21 described later) to the external space;
A first valve structure (for example, described later) that opens and closes a part of the upright inflow passage to the cylinder and a drop based on the weight of the first moving valve (for example, a lower ball valve 14 (described later)). Valve seat 11b), an inverted inflow passage to the cylinder, and a second valve structure that opens and closes a part of the inverted inflow passage by dropping based on the weight of a second moving valve (for example, an upper ball valve 13 described later). (E.g., an inflow passage selection operation portion provided with a valve seat 10b described later),
The piston is
Each includes an upstream valve action part (for example, a later-described lateral hole part 3a, a tubular valve member 8) and a downstream valve action part (for example, a later-described lateral hole part 2a, an annular valve member 7) that exhibit the valve action,
The cylinder is
An upstream storage space area (for example, described later) that communicates with each of the upright inflow passage and the inverted inflow passage in the internal space on the upstream side of the upstream valve action portion, and whose volume changes according to the movement of the piston. An upstream space area 22) in the cylinder,
Due to the movement of the piston during the operation mode setting operation, the contents of the upstream storage space area are sent back to the upright inflow passage and the inverted inflow passage with the upstream valve action portion closed. , Shape it.
(2) In (1) above,
The first valve structure and the second valve structure are:
As a whole, a first valve seat in which a first opening (for example, an opening 11a described later) with respect to the first moving valve is formed, and a second opening (for example, to be described later) with respect to the second moving valve. The opening 10a) has a second valve seat formed opposite to the first opening;
The size of each of the first opening and the second opening, and the interval between the openings,
With the change between the upright state and the inverted state, one of the first or second moving valve that falls toward the opening remains in the drop position before the change. The shape is set so as to collide with the other of the two moving valves.
(3) A storage space (in the cylinder) (by a valve action based on movement in a cylinder (for example, a cylinder 5 described later) of a piston (for example, a piston 31 described later) interlocked with an operation unit (for example, an operation button 1 described later). For example, a pump operating unit that discharges the contents of a cylinder internal space region 33) described later to the external space;
A first valve structure (for example, described later) that opens and closes a part of the upright inflow passage to the cylinder and a drop based on the weight of the first moving valve (for example, a lower ball valve 14 (described later)). Valve seat 11b), an inverted inflow passage to the cylinder, and a second valve structure that opens and closes a part of the inverted inflow passage by dropping based on the weight of a second moving valve (for example, an upper ball valve 13 described later). (E.g., a valve seat 10b described later) provided with an inflow passage selection operation unit, and a normal inverted pump mechanism,
The first valve structure and the second valve structure are:
As a whole, a first valve seat in which a first opening (for example, an opening 11a described later) with respect to the first moving valve is formed, and a second opening (for example, to be described later) with respect to the second moving valve. The opening 10a) has a second valve seat formed opposite to the first opening;
The size of each of the first opening and the second opening, and the interval between the openings,
With the change between the upright state and the inverted state, one of the first or second moving valve that falls toward the opening remains in the drop position before the change. The shape is set so as to collide with the other of the two moving valves.

  The present invention is directed to a normal inverted pump mechanism configured as described above and a pump-type product including the same.

  In the present invention, the moving valve that remains in the suction state before the change after the normal upside-down change is used for the reverse flow of the contents to the moving valve side accompanying the operation mode setting operation, or the original due to the change of the normal upside-down. The suction force is released by the collision force from another moving valve that exhibits a drop operation.

  Therefore, the malfunction of each valve structure provided in each of the upright inflow passage and the inverted inflow passage of the inflow passage selection operation portion to the cylinder (pump operation portion) of the normal inversion pump mechanism can be eliminated.

  As a result, the contents supply operation from the container body side to the downstream storage space area / storage space area (= the storage space area of the next discharge target contents) in the cylinder accompanying the return from the operation mode to the stationary mode is performed. Surely done.

  The best mode for carrying out the present invention will be described with reference to FIGS.

here,
FIG. 1 shows an upright stationary mode of an entire pump container equipped with an upside-down pump mechanism (part 1),
FIG. 2 shows an enlarged view of the normal inverted pump mechanism of FIG.
FIG. 3 shows the upright operation mode of the upside-down pump mechanism (part 1),
FIG. 4 shows an inverted stationary mode (a state in which the upper ball valve 13 remains adsorbed to the valve seat 10b of the upper bush 10 as in the upright stationary mode in FIG. 1) of the inverted pump mechanism (part 1). Show
FIG. 5 shows an initial state of the inverted operation mode of the normal inverted pump mechanism (part 1),
FIG. 6 shows the way the normal inverted pump mechanism (part 1) returns from the inverted operation mode to the inverted stationary mode.
FIG. 7 shows an upright stationary mode of the upside-down pump mechanism (part 2),
FIG. 8 shows the inverted stationary mode of the normal inverted pump mechanism (part 2).

  The components of the following reference numbers with alphabets (for example, the discharge port 1a) indicate that they are in principle part of the components (for example, the operation buttons 1) of the numeral portions of the reference numbers.

  The main components of the inverted pump mechanism (pump-type product) shown in FIGS. 1 to 6 are an operation button 1, a piston 4 (= upper piston member 2 + lower piston member 3), a cylinder 5, and a coil spring 6 as described later. , Annular valve member 7, cylindrical valve member 8, cylinder cover 9, upper bush 10, lower bush 11, bush cover 12, upper ball valve 13, and lower ball valve 14.

  Other components include a tube 15, a container body 16, a seal member 17, a packing 18 and a screw cap 19.

In FIG. 1 to FIG. 6, the operation button and the component for operating the pump that discharges the contents of the downstream storage space area to the external space by pressing the operation button,
1 is a push-down operation button that can be moved up and down (operation unit).
1a is a content outlet,
1b is an operation button internal passage leading to the discharge port,
2 is a sheath-like upper piston member (stem) integrated with the operation button 1;
2a is a plurality of lateral hole portions that act as downstream valves between the annular valve member 7 described later,
2b is an annular concave portion formed outside the lateral hole portion,
2c is an upper piston member internal passage communicating with the lateral hole portion,
3 is a sheath-like lower piston member fitted to the upper piston member 2,
3a is a plurality of lateral hole portions that act as upstream valves with a tubular valve member 8 to be described later,
3b is a lower piston member internal passage communicating with the lateral hole portion,
3c is an inverted skirt portion formed on the outer peripheral surface of the lower piston member and in close contact with a small-diameter lower inner peripheral surface of a cylinder 5 described later,
4 is a piston comprising an upper piston member 2 and a lower piston member 3;
5 is a cylinder in which the piston 4 moves up and down in a large-diameter upper space and a small-diameter lower space, having an internal space for passing and storing contents;
5a is a vertical hole for passage of contents formed at the bottom,
5b is a longitudinal groove-like portion formed on the outer peripheral surface of the large-diameter upper portion and serving as a passage for contents and outside air,
5c is a lateral groove-like portion formed on the upper end surface to serve as a passage for contents and outside air,
6 is a coil spring disposed between the bottom step of the cylinder 5 and the lower piston member 3 to urge the piston 3 upward;
7 is an annular valve member that is attached to the annular concave portion 2b of the upper piston member 2 in close contact with the inner peripheral surface of the cylinder 5 and that acts as a downstream valve between the inner side hole portion 2a;
8 is a cylindrical valve member which is attached to the outer peripheral surface of the lower piston member 3 and exhibits an upstream valve action with the lateral hole portion 3a;
Respectively.

Regarding an inflow passage selection operation component for selectively setting an upright inflow passage and an inverted inflow passage to the cylinder 5,
9 is a cylindrical cylinder cover that is fitted to the lower outer peripheral surface of the cylinder 5 to form a content inflow passage to a later-described cylinder downstream space 21;
9a is a top surface portion that contacts and holds a part of the bottom surface portion of the cylinder 5,
9b is a block-like portion that regulates the range of movement of the upper ball valve 13, which will be described later, from the top surface to the lower center.
9c is a bowl-shaped receiving part that is formed on the bottom side of the block-like part and holds the upper ball valve 13 in an inverted state;
9d is an inflow passage at the time of inversion from the outer peripheral surface of the cylinder cover to the bottom surface side of the block-like portion,
9e is an upper inner peripheral surface of the cylinder cover (an inner peripheral surface facing the outer peripheral surface of the cylinder 5) and a vertical communication passage formed from the lower portion thereof to the outer peripheral surface to serve as a passage for contents and outside air. Directional groove,
9f is a ring-shaped portion formed on the upper outer peripheral surface,
10 is a cylindrical upper bushing in which an upper ball valve 13 which will be described later is disposed in the internal space by being fitted to the block-like portion 9b of the cylinder cover 9 so as to sandwich the receiving portion 9c and the inflow passage 9d.
10a is an outlet that acts as a storage space for the upper ball valve 13 at the time of erecting and the outlet of an inward bushing inner space 24 described later,
10b is an annular tapered valve seat that is formed around the opening and receives the upper ball valve 13 in the upright position;
10 c is a plurality of longitudinal ribs formed on the outer peripheral surface and in contact with the inner peripheral surface of the cylinder cover 9;
11 is a cylindrical lower bush in which a lower ball valve 14 which will be described later is disposed by being fitted to the inner peripheral surface of the lower end side of the cylinder cover 9;
11a is an opening that acts as a so-called storage space for the outlet of the upright bushing inner space 25 described later and the lower ball valve 14 when inverted,
11b is an annular tapered valve seat that is formed around the opening and receives the lower ball valve 14 when inverted,
12 is a cylindrical bush cover that is fitted to the lower outer peripheral surface of the lower bush 11 to restrict the movement range of the lower ball valve 14;
12a is a bowl-shaped receiving portion for holding the lower ball valve 14 in the upright position,
12b is a lower small diameter cylindrical portion,
12c is an upright inflow passage continuing upward from the small-diameter cylindrical portion,
13 is an upper ball valve disposed in a space area specified by the cylinder cover 9 (block-like portion 9b) and the upper bush 10;
14 is a lower ball valve disposed in a space specified by the lower bush 11 and the bush cover 12,
Respectively.

  Here, the diameters of the upper ball valve 13 and the lower ball valve 14 are set larger than those of the openings 10 a and 11 a of the upper bush 10 and the lower bush 11.

These numbers are for example
The diameter of the openings 10a and 11a is 1.8 mm to 3.5 mm,
The diameter of the upper ball valve 13 and the lower ball valve 14 is 2.38 mm to 3.97 mm (3/32 inch to 5/32 inch),
The weight of the upper ball valve 13 and the lower ball valve 14 is 0.05 g to 0.25 g,
The distance between the opening 10a and the opening 11a (the distance between the lower end surface portion of the valve seat 10b and the upper end surface portion of the valve seat 11b) is 0.1 mm to 0.5 mm.

Regarding other components,
15 is a tube for inflow of contents fitted in the small diameter cylindrical portion 12b of the bush cover 12,
16 is a container body in which various contents are stored,
17 is an annular seal member which is sandwiched between the upper end surface of the cylinder 5 and a screw cap 19 which will be described later and whose inner end portion can be elastically displaced downward and is in close contact with the outer peripheral surface of the upper piston member 2;
18 is an annular packing sandwiched between the ring-shaped portion 9f of the cylinder cover 9 and the upper end surface of the container body 16.
19 is a cylindrical screw cap that is screwed to the outer peripheral surface of the neck of the container body in a form integrated with each component except the container body 16;
Respectively.

Regarding the space area formed inside the cylinder 5, the cylinder cover 9, the bush cover 12, etc.,
21 is a downstream area of the cylinder internal space (a space area downstream of the lateral hole portion 3a), and a downstream area in the cylinder in which contents to be released next time are stored,
22 is an upstream area (space area from the vertical hole portion 5a to the horizontal hole portion 3a) of the cylinder internal space, and the cylinder upstream space area that can communicate with the cylinder downstream space area 21;
23 is formed between the vertical hole portion 5a of the cylinder 5 and the openings 10a, 11a of the upper bush 10 and the lower bush 11 through the lateral space portion of the vertical rib 10c. Common inflow space area,
24 is an inward bushing space area formed between the cylinder cover 9 and the upper bushing 10;
Reference numeral 25 denotes an upright bushing space region formed between the lower bushing 11 and the bushing cover 12,
Reference numeral 26 denotes a gap portion between the upper ball valve 13 and the lower ball valve 14 and the valve seats 10b and 11b that are in contact with (intimately contact with) the inside of the bush. Gap space area,
Respectively.

In addition, regarding the flow direction of contents and outside air,
A is a content outflow direction that is common during upright and upside down, in which the contents of the in-cylinder downstream space area 21 are released to the external space as the operating button 1 is pressed.
B shows the contents common in upright and inverted positions, in which the contents in the cylinder upstream space 22 are sent to the openings 10a and 11a of the upper bush 10 and the lower bush 11 in accordance with the pressing operation of the operation button 1. Moving direction (back flow direction),
C is a content inflow direction when standing upright, in which the contents of the container body 16 are supplied to the downstream space area 21 in the cylinder as the operation button 1 is released.
D is the content inflow direction at the time of inversion, in which the contents of the container body 16 are supplied to the downstream space area 21 in the cylinder when the operation button 1 is released.
E is the air flow direction common to the upright and the upside when the air in the external space is supplied to the inside of the container body 16 when the operation button 1 is pressed.
Respectively.

here,
The content outflow route in the direction A is “inside cylinder space 21-side hole 2a-upper piston member internal passage 2c-operation button internal passage 1b-discharge port 1a"
The content reverse flow route in the B direction is “in-cylinder upstream space region 22−vertical hole portion 5−common inflow space region 23−opening portions 10a and 11a”,
-The content inflow route in the C direction is "tube 15-upright bush space 25-opening 11a-common inflow space 23-vertical hole 5a-cylinder upstream space 22-lower piston member internal passage 3b-lateral hole portion 3a-downstream space area 21 in the cylinder "
The content inflow route in the direction D is “cylinder cover inflow passage 9d—inverted bush space 24—opening 10a—common inflow space 23—vertical hole 5a—cylinder upstream space 22—lower piston Member internal passage 3b-lateral hole 3a-cylinder downstream space area 21 ",
-The direction of the outside air inflow in the direction E is "the passage area between the operation button 1 and the screw cap 19-between the outer peripheral surface of the upper piston member 2 and the seal member 17-the lateral groove 5c of the cylinder 5-the vertical of the cylinder 5 “Grooved portion 5b—inside the container body”.

  The above-mentioned operation button 1, upper piston member 2, lower piston member 3, cylinder 5, cylinder cover 9, upper bush 10, lower bush 11, bush cover 12, tube 15 and screw cap 19 are made of polypropylene, polyethylene, polyacetal. , Nylon, polybutylene terephthalate and other synthetic resins. The container body 16 is made of synthetic resin or glass.

  The coil spring 6, the upper ball valve 13 and the lower ball valve 14 are made of metal or synthetic resin. The annular valve member 7, the cylindrical valve member 8, the seal member 17 and the packing 18 are made of rubber or synthetic resin.

The basic features of the upside down pump mechanism of FIGS.
(31) Due to the downward movement of the piston 4 accompanying the pressing operation of the operation button 1, the contents already stored in the upstream space area 22 in the cylinder are moved upward via the common inflow space area 23 (at the end of the previous pressing operation). Backflow in the B direction leading to the openings 10a, 11a of the bush 10 and the lower bush 11,
(32) When the pump-type product is changed upside down, the ball valve newly falling from the receiving portions 9c, 12a to the valve seats 10b, 11b in the upper ball valve 13 and the lower ball valve 14 is Colliding with the other ball valve that is kept in contact with the valve seat (adsorption state),
It is.

  Due to the backflow action of the contents and the collision action of the ball valve, the upper ball valve 13 or the lower ball valve 14 that is held (adsorbed) in contact with the valve seat before the normal inverted state is actively driven. Then, it is dropped toward the receiving portions 9c and 12a.

  That is, the lower ball valve 14 falls to the receiving portion 12a of the bush cover 12 in the upright state as shown in FIG. 1 and the upper ball valve 13 falls into the receiving portion 9c of the cylinder cover 9 in the inverted state as shown in FIG.

  Due to the drive drop action on the attracted ball valve at the time of the change of the normal inverted state, the upper bush 10 / the lower bush 11 and the common inflow space from the inside of the container main body 16 in either the upright state or the inverted state. The content inflow passages in the C direction and the D direction through the region 23 to the vertical hole portion 5a of the cylinder 5 are reliably secured.

  The forwardly inverted pump mechanism of FIGS. 1 to 6 is configured to exhibit both the above-described content backflow action and the ball valve collision action. However, the forwardly inverted pump mechanism having only one of these actions is also present. This is the scope of the invention. 7 and 8 is a mode in which only the ball valve collision action occurs.

In the upright still mode of FIG. 1 and FIG.
(41) The annular valve member 7 closes the lateral hole portion 2a of the upper piston member 2 and the tubular valve member 8 closes the lateral hole portion 3a of the lower piston member 3, and both the downstream valve and the upstream valve of the piston 4 Close,
(42) The upper ball valve 13 contacts the valve seat 10b of the upper bush 10;
(43) The lower ball valve 14 comes into contact with the receiving portion 12a of the bush cover 12,
It is in a state.

  And the passage area from the inside of the container main body 16 to the tubular valve member 8 (tube 15-bushing space area 25 when standing up-common inflow space area 23-upstream space area 22 in the cylinder-lower piston member internal passage) 3b—the space area formed by the lateral hole portion 3a) and the in-cylinder downstream space area 21, the contents are respectively stored in a continuous state.

  As described above, this is based on the well-known suction action of the pump mechanism during the return operation from the previous pressing state of the operation button 1. That is, as the volume of the in-cylinder downstream space region 21 increases with the return operation, the pressure there decreases, and as a result, the upstream valve of the lateral hole 3a and the tubular valve member 8 opens, and the contents of the container body 16 are opened. This is because it flows into the in-cylinder downstream space area 21 through the passage area, that is, flows in the C direction route.

  When the operation button 1 in the state shown in FIG. 1 is pressed and the piston 4 integrated therewith moves downward while resisting the upward biasing force of the coil spring 5, the annular valve member 7 also moves its outer end portion to the cylinder 5. The inner end side sandwiched between the annular concave portions 2b of the upper piston member 2 is moved downward while being deformed as shown in FIG.

  Based on the downward movement of the piston 4 and the deformation of the annular valve member 7, the horizontal hole portion 2 a which is the downstream valve action portion is opened, and the lower piston member 3 has the reverse skirt portion 3 b whose lower diameter is the lower side of the cylinder 5. It moves downward in a state of being in close contact with the inner peripheral surface of the part.

  Then, according to the amount of movement of the lower piston member 3 to the cylinder small diameter portion, the volume of the in-cylinder downstream space area 21 decreases and the pressure of the contents in the space area increases.

As a result, as shown in FIG. 3, the horizontal hole portion 3 a that is the upstream valve action portion is maintained in the closed state by the tubular valve member 8,
(51) The contents of the in-cylinder downstream space area 21 are discharged to the external space by the flow of the A direction route,
(52) The contents in the upstream space area 22 in the cylinder are in the B-direction route to the respective openings 10a, 11a of the upper bush 10 and the lower bush 11 via the "vertical hole 5-common inflow space area 23". Sent out by flow.

  As described above, it is one of the features of the present invention that when the operation button 1 is pressed, the contents in the in-cylinder upstream space 22 flow back (return) toward the upper bush 10 and the lower bush 11. It is.

  That is, when the lower ball valve 14 is in the state of being adsorbed to the valve seat 11b of the lower bush 11 while being in the previous inverted use, unlike the state shown in FIGS. The lower ball valve 14 is pushed by the backflow of the object in the B direction, and the suction state is released. Then, the lower ball valve 14 falls and is held by the receiving portion 12a of the bush cover 12 as shown.

  The dotted lines C and E in FIG. 3 indicate the inflow direction of contents supplied from the container body 16 to the in-cylinder downstream space area 21 and the outside air supplied from the external space to the container body 16 when the operation button 1 is released. The inflow direction of each is shown.

  In other words, the content-filling flow in the C direction occurs when the operation button 1 is released and the piston 4 returns upward due to the biasing action of the coil spring 6, and the in-cylinder downstream space 21 and the upstream in the cylinder. This is because the volume of each side space region 22 increases and the content pressure there decreases. At this time, the lower portion of the tubular valve member 8 is pushed outward by the action of the content filling flow, and the lateral hole portion 3a of the upstream valve action portion communicates with the in-cylinder downstream space area 21.

  In addition, the so-called outside air-filled flow in the E direction is caused by the increase in the volume of the air layer portion of the container body as the contents of the container body 16 are supplied to the downstream space 21 in the cylinder. This is because the pressure is lower than the outside air pressure.

  FIG. 4 shows a state after the pump type product is changed from the upright state to the inverted state (inverted stationary mode).

  Here, the upper ball valve 13 is in the same position as in the upright state and is held (adsorbed) by the valve seat 10b of the upper bush 10.

  As the acting force at this time, the surface tension of the liquid content remaining in the inter-bush space space 26 sandwiched between the valve seat 10b and the upper ball valve 13 and the contents contained in the space region are roughly described. The holding power when an object is fixed or solidified can be considered. When the main action is based on surface tension, an air layer exists in the space immediately upstream (in the inverted state) of the residual liquid content (inside the upper bush).

  Further, the lower ball valve 14 held in the receiving portion 12a of the bush cover 12 in the upright state falls in the direction of the arrow by its own weight and hits the upper ball valve 13.

  In addition, the verification result of the favorable content discharge | release operation | movement after a normal inversion change is obtained also in the product provided with the normal inversion pump mechanism of below-mentioned FIG.7 and FIG.8.

  According to this verification result, it is possible to sufficiently expect an event that the upper ball valve 13 that is still adsorbed to the valve seat 10b of FIG.

  However, in the normal inverted pump mechanism of FIGS. 1 to 6, the focus is mainly on the dropping action of the attracted ball valve based on the back flow of the contents in the B direction toward the ball valve when the operation button 1 is pressed. I will explain.

  Of course, the falling action due to the back flow of the contents is also applicable to a normal inverted pump mechanism having a structure in which a collision between the upper ball valve 13 and the lower ball valve 14 after the normal inverted change cannot occur. It is.

  FIG. 5 shows an initial state in which the operation button 1 in the inverted state in FIG. 4 is pressed. Due to the movement of the piston 4 (in the upward direction in FIG. 5) accompanying this pressing, as described above, the contents of the in-cylinder upstream space region 22 flow backward in the B direction, causing the upper ball valve 13 and the lower ball valve 14 to move. Each is driven in a direction away from the valve seats 10a and 11a.

  As a result, the upper ball valve 13 is dropped and held on the receiving portion 9c of the cylinder cover 9, and the lower ball valve 14 is dropped to the valve seat 11a by its own weight after a little separation, and thereby the original (when the operation button is released) The content inflow route in the D direction is secured.

  Further, in the inverted operation mode of FIG. 5, as described above, the contents of the in-cylinder downstream space region 21 flow in the A direction and are discharged to the external space.

  FIG. 6 shows a state in the middle of the end of the inverted operation mode, that is, a state in the middle of returning the piston based on the elastic force of the coil spring 6 after the user stops pressing the operation button 1.

  In the illustrated piston return operation, the horizontal hole portion 2a of the downstream valve action portion is closed by the annular valve member 7, and the horizontal hole portion 3a of the upstream valve action portion is shifted to the open state.

  The reason why the horizontal hole portion 3a is “open” is that the content pressure in the upstream space region 22 in the cylinder increases due to the flow of the content from the container body side, and the portion corresponding to the horizontal hole portion of the tubular valve member 8 This is because it spreads outward while resisting its own elasticity.

  That is, the volume of the upstream space area 22 in the cylinder increases and the pressure of the contents decreases, whereby the contents of the container body 16 flow into the upstream space area 22 in the cylinder via the D-direction route and become cylindrical. This is because the pressing force to the valve member 8 also increases. The illustrated cylindrical valve member 8 is still in contact with the inner peripheral surface (small diameter portion) of the cylinder 5.

  When the piston 4 further returns (downward in FIG. 6) and the cylindrical valve member 8 moves away from the small-diameter portion of the cylinder 5, the inflow content into the upstream space area 22 in the cylinder passes through the lateral hole portion 3a. It enters the downstream space 21 in the cylinder.

  Ultimately, the tubular valve member 8 is elastically restored to the initial state and the lateral hole portion 3a is closed in a state where the content pressures of both the space areas 21 and 22 are balanced. As a result, the state shifts to the state where the next contents to be discharged are stored in the in-cylinder downstream space area 21 formed of the closed space, that is, the stationary mode.

  FIGS. 7 and 8 show a normal inverted pump that exclusively takes the collision action between the upper ball valve 13 and the lower ball valve 14 as a measure for canceling the ball valve adsorption state at the time of the normal inverted change (as before the change). The mechanism is shown. This normal inverted pump mechanism does not employ a configuration in which the contents of the in-cylinder upstream space region 22 flow back to the ball valve when the operation button 1 is pressed.

  The basic difference from the upside-down pump mechanism shown in FIGS. 1 to 6 is that the upstream valve action part (in the case of FIGS. Without being attached to the cylinder.

  That is, the upstream valve operating portion does not move, and therefore there is no in-cylinder upstream space region 22 whose volume changes in accordance with the movement of the piston 4 in the normal inverted pump mechanism of FIGS.

  Reference numerals newly used in FIGS. 7 and 8 are as follows, and the other reference numerals are the same as those in FIGS.

7 and 8,
5 ′ is a cylinder having the same function as cylinder 5,
5a ′ is a cylindrical portion that holds the upper outer peripheral surface of a cylinder bottom side sheath-like portion 32 described later,
5b 'is a rib that extends from the cylindrical portion 5a' to the inner peripheral surface of the cylinder in the radial direction outside the lower portion thereof, and exhibits a receiving action of the coil spring 6 '.
6 'is a coil spring having the same function as the coil spring 6,
7 'is an annular valve member having the same function as the annular valve member 7,
8 'is a cylindrical valve member having the same function as the cylindrical valve member 8,
31 is a sheath-like piston integrated with the operation button 1 (≈ upper piston member 2),
31a is a plurality of lateral hole portions that act as downstream valves between the annular valve member 7 ',
31b is an annular concave portion formed outside the lateral hole portion,
31c is a piston internal passage communicating with the lateral hole portion,
32 is a cylinder bottom side sheath attached to the lower opening of the cylinder 5 ';
32a is a longitudinal internal passage,
32b is a plurality of lateral hole portions that communicate with the longitudinal internal passage and exhibit an upstream valve action with the tubular valve member 8 ';
Reference numeral 33 denotes a cylinder 5 ′, an in-cylinder space region formed between the cylinder bottom side sheath-like portion 32 and the piston 31,
A ′ is the same content outflow direction during upright and upside down on the same route as the content outflow direction A,
C ′ is the content inflow direction when standing upright for the same route as the content outflow direction C.
D ′ is the content inflow direction at the time of inversion for the same route as the content outflow direction D,
Respectively.

here,
The content outflow route in the direction A ′ is “in-cylinder space 33—lateral hole 31a—piston internal passage 31c—operation button internal passage 1b—release port 1a”;
The content inflow route in the C ′ direction is “tube 15—bush inner space 25—opening 11a—common inflow space 23—vertical inner passage 32a—lateral hole 32b—cylinder inner space 33”. And
The content inflow route in the direction D ′ is “cylinder cover inflow passage 9d—inverted bush space 24—opening 10a—common inflow space 23—vertical internal passage 32a—lateral hole 32b—cylinder space Region 33 ".

  The cylinder 5 ′, the piston 31, and the cylinder bottom side sheath portion 32 are made of synthetic resin such as polypropylene, polyethylene, polyacetal, nylon, polybutylene terephthalate, or the like.

  The coil spring 6 'is made of metal or synthetic resin, and the annular valve member 7' and the tubular valve member 8 'are made of rubber or synthetic resin.

  In the case of the normal inverted pump mechanism of FIGS. 7 and 8, the lower piston member 3 in the normal inverted pump mechanism of FIGS. 1 to 6 is discarded, and instead of this, a cylinder bottom side sheath-like portion 32 is provided. ing. Therefore, the back flow of the content in the B direction does not occur when the operation button 1 is pressed.

  When the upright pump type product of FIG. 7 is inverted as shown in FIG. 8, the lower ball valve 14 falls.

  Therefore, even after the change to the inverted state, even if the upper ball valve 13 remains in the upright state, that is, remains in contact (adsorption) with the valve seat 10 b of the upper bush 10, the lower ball valve 14 remains in the upper ball valve 13. And the upper ball valve is dropped from the valve seat 10b to the receiving portion 9c of the cylinder cover 9.

  The fall of the upper ball valve 13 secures a content inflow route in the D ′ direction from the inside of the container body to the in-cylinder space area 33 when the release operation of the operation button 1 is released.

  Even when the pump type product is changed from the inverted state of FIG. 8 to the upright state of FIG. 7, the upper ball valve 13 that falls by its own weight is changed in the inverted state as in the shift from FIG. 7 to FIG. The lower ball valve 14 that remains in contact (adsorption) with the valve seat 11b of the lower bush 11 is collided and dropped from the valve seat 11b to the receiving portion 12a of the bush cover 12.

  As is well known, when the pressing of the operation button 1 in the upright stationary mode of FIG. 7 and the inverted stationary mode of FIG. 8 is released, the piston 31 returns to the initial state by the elastic force of the coil spring 6 '.

  In accordance with this return operation, the inflow of contents by the route in the C ′ direction or D ′ direction from the container body 6 to the in-cylinder space region 33 and the inflow of outside air by the route in the E direction from the external space to the container body 16 are respectively performed. Arise.

  Of course, the operation unit is not limited to a push-down type operation button. For example, the operation unit may be a trigger type (rotation type) operation lever, a tilt type (tilt type) operation button, or the like.

  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, gardening agents, repellents (insecticides), cleaners, deodorants, laundry glue, urethane foam, fire extinguishers, adhesives, lubrication There are various uses such as agents.

  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, Coolants such as camphor and menthol, anti-asthma drugs 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, dihydrogen phosphate Use a fire extinguishing agent such as ammonium or sodium bicarbonate.

  Furthermore, other than the above-mentioned contents, suspending agents, ultraviolet absorbers, emulsifiers, humectants, antioxidants, sequestering agents and the like can also be used.

It is explanatory drawing which shows the erecting stationary mode of the whole pump container provided with the erecting pump mechanism (the 1). It is explanatory drawing which shows the state which expanded the normal inverted pump mechanism of FIG. It is explanatory drawing which shows the erecting operation mode of an erecting pump mechanism (the 1). FIG. 3 is an explanatory diagram showing an inverted stationary mode (a state in which the upper ball valve 13 remains adsorbed to the valve seat 10b of the upper bush 10 as in the erecting stationary mode of FIG. 1) of the regular inverted pump mechanism (part 1). It is explanatory drawing which shows the initial state of the inverted operation mode of a normal inverted pump mechanism (the 1). It is explanatory drawing which shows the return way from the inverted operation mode of the normal inverted pump mechanism (the 1) to the inverted stationary mode. It is explanatory drawing which shows the erecting stationary mode of an erecting pump mechanism (the 2). It is explanatory drawing which shows the inverted stationary mode of a normal inverted pump mechanism (the 2).

Explanation of symbols

1: Press-type operation button 1a: Content discharge port 1b: Operation button internal passage 2: Upper piston member 2a: Plural lateral hole portions 2b: Ring-shaped concave portion 2c: Upper piston member internal passage 3: Lower piston member 3a: a plurality of horizontal hole portions 3b: lower piston member internal passage 3c: reverse skirt portion 4: piston 5: cylinder 5a: vertical hole portion 5b: vertical groove portion 5c: horizontal groove portion 6: coil spring 7: annular valve Member 8: Tubular valve member 9: Cylinder cover 9a: Top surface portion 9b: Block-shaped portion 9c: Receiving portion 9d: Inflow passage 9e at the time of inversion: Vertical groove-shaped portion 9f: Ring-shaped portion 10: Upper bush 10a : Opening portion 10b: Valve seat 10c: Vertical rib 11: Lower bush 11a: Opening portion 11b: Valve seat 12: Bush cover 12a: Receiving portion 12b: Small-diameter cylindrical portion 12c: Inflow passage 13 when standing upright: Upper ball 14: Lower ball valve 15: Tube 16: Container body 17: Seal member 18: Packing 19: Screw cap 21: Downstream space area in the cylinder 22: Upstream space area in the cylinder 23: Common inflow space area 24: For inversion Bush internal space 25: Upright bush internal space 26: Bush clearance space A: Content outflow direction to external space common during upright and inverted B: Common content movement direction during upright and inverted (Reverse flow direction)
C: Content inflow direction into the cylinder during upright D: Content inflow direction into the cylinder during upside down E: Common air inflow direction during upright and upside down,

(Used only in Figs. 7 and 8)
5 ': Cylinder 5a': Cylindrical part 5b ': Rib 6': Coil spring 7 ': Annular valve member 8': Cylindrical valve member 31: Piston 31a: Plural lateral hole parts 31b: Ring concave part 31c: Piston Internal passage 32: Cylinder bottom side sheath portion 32a: Longitudinal internal passage 32b: A plurality of lateral hole portions,
33: In-cylinder space area,
A ′: Content outflow direction to external space common during upright and upside down,
C ': Direction of contents flow into cylinder when upright,
D ′: Content inflow direction into cylinder when inverted,

Claims (4)

A pump operating unit that discharges the contents of the downstream storage space in the cylinder to the external space by a valve action based on movement of the piston in conjunction with the operating unit in the cylinder;
An upright inflow passage to the cylinder, a first valve structure that opens and closes a part of the upright inflow passage by dropping based on the weight of the first moving valve, an upright inflow passage to the cylinder, and a second An inflow passage selection actuating portion having a second valve structure that opens and closes a part of the inverted inflow passage by dropping based on the dead weight of the movable valve,
The piston is
Each of the upstream valve action part and the downstream valve action part exhibiting the valve action,
The cylinder is
In the internal space on the upstream side of the upstream valve action portion, an upstream storage space area that communicates with each of the upright inflow passage and the inverted inflow passage, and whose volume changes according to the movement of the piston,
Due to the movement of the piston during the operation mode setting operation, the contents of the upstream storage space area are sent back to the upright inflow passage and the inverted inflow passage with the upstream valve action portion closed. ,
A normal inverted pump mechanism. The first valve structure and the second valve structure are:
As a whole, a first valve seat in which a first opening for the first moving valve is formed, and a second opening for the second moving valve are opposed to the first opening. A second valve seat formed,
The size of each of the first opening and the second opening, and the interval between the openings,
With the change between the upright state and the inverted state, one of the first or second moving valve that falls toward the opening remains in the drop position before the change. It collides with the other of the two moving valves, and is set in a mode.
The forwardly inverted pump mechanism according to claim 1. A pump operating unit that discharges the contents of the storage space area in the cylinder to the external space by a valve action based on the movement of the piston in conjunction with the operation unit in the cylinder;
An upright inflow passage to the cylinder, a first valve structure that opens and closes a part of the upright inflow passage by dropping based on the weight of the first moving valve, an upright inflow passage to the cylinder, and a second An inflow passage selection operation portion having a second valve structure that opens and closes a part of the inverted inflow passage by dropping based on its own weight,
The first valve structure and the second valve structure are:
As a whole, a first valve seat in which a first opening for the first moving valve is formed, and a second opening for the second moving valve are opposed to the first opening. A second valve seat formed,
The size of each of the first opening and the second opening, and the interval between the openings,
With the change between the upright state and the inverted state, one of the first or second moving valve that falls toward the opening remains in the drop position before the change. It collides with the other of the two moving valves, and is set in a mode.
A normal inverted pump mechanism. It is equipped with the normal inverted pump mechanism according to any one of claims 1 to 3, and contains contents.
This is a pump-type product.

Images