JP5253267B2 - Thin container with pump - Google Patents

Description

  The present invention relates to a thin-walled container with a pump having a container body whose outer shape is deformed and volume-reduced as the filling capacity of the contents decreases, and even when the filling capacity of the contents is reduced. It is intended to suppress the deformation and volume reduction of the outer shape of the container main body to ensure independence and to keep the aesthetic stability stably.

  Many containers with cosmetics, hair styling, shampoo, rinse, etc. that are equipped with pumps are marketed regardless of the handy type or the stationary type, so that the contents in the container are hygienic and efficient. Can be poured out into

  Recently, in this type of container, it has been required to reduce the thickness of the container itself from the viewpoint of effective use of resources and reduction of garbage. It is difficult to achieve this, and various problems such as damage to the external appearance of the container are caused, so that there is a limit to achieving this.

  As a prior art regarding this point, a liquid ejector including an outer case body in which a container for containing contents is a flexible bag-like container body and the container body is housed inside is known (for example, Patent Document 1). reference). However, in such a liquid ejector, it is necessary to prepare an outer case body separately. Further, although the bag-like container body is simply replaced, the replacement operation is complicated and not easy to use.

Japanese Utility Model Publication No. 5-34167

  An object of the present invention is to propose a thin-walled container with a pump that does not require an extra member such as an outer case body and does not impair the external shape even when the filling capacity of the contents is reduced.

The present invention relates to a thin-walled container body that forms a filling space for contents and can be reduced as the contents are discharged, and is suspended and held above the filling space through the mouth of the container body. A thin-walled container with a pump comprising an air pump for supplying compressed air into a filling space by reciprocating an air piston in the interior,
The air cylinder is provided with a check valve that is opened only when air is jetted into the container body, and is opened when the air piston becomes unable to eject air due to a pressure increase in the container body. And a pressure-relief valve that discharges air in the air cylinder toward the outside of the container.

  In the thin-walled container with a pump configured as described above, the pressure release valve is elastic toward the compression side of the air cylinder and a case having a path penetrating from the compression side of the air piston toward the opposite side. It is advantageously adapted to the present invention that it is constituted by a valve body that is supported and abuts against the seating surface of the path and holds the path in a closed state.

  On the radially inner side of the air cylinder, a liquid pump for ejecting the contents in the container body can be provided. The liquid pump includes a liquid cylinder that forms a discharge path for the contents, and a liquid pump for the liquid. A liquid on-off valve that opens and closes the discharge path in synchronization with the air piston in the cylinder, a hollow stem linked to the liquid on-off valve, and the contents that pass through the hollow stem by opening the liquid on-off valve. A thing provided with the nozzle head which ejects an object is applied.

  Since air is supplied into the filling space by operating the air pump, the container body retains its initial shape regardless of the remaining amount of contents, and as a result, independence is ensured and aesthetics are maintained. Be drunk.

It is the figure which showed embodiment of the thin wall container with a pump according to this invention. It is the figure which showed the state which pushed in the nozzle head. (A) and (b) are the principal part enlarged views of the on-off valve for liquids (closed state) ((b) is the figure which showed the AA cross section of (a)). It is a principal part enlarged view of the on-off valve for liquids (open state).

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 shows an embodiment of a thin-walled container with a pump according to the present invention.

  In the figure, reference numeral 1 denotes a thin-walled container main body that forms a filling space M for contents and can be reduced in volume as the contents are discharged.

  An air pump 2 supplies air into the filling space M. The air pump 2 includes an air cylinder 2a that is suspended from an upper portion of the filling space M through the mouth portion 1a of the container body 1 and an air piston 2b that can reciprocate within the air cylinder 2a.

Air cylinder 2a of the air pump 2 has a bottom wall 2a ₁ of the disc-shaped, the peripheral wall 2a ₂ that forms between air pressurized on the inside leads to the outer edge of the bottom wall 2a _1. The configuration air piston 2b is a slider 2b ₁ of the disk type in which the movement while sliding along the inner wall of the air cylinder 2a, the sliding member 2b ₂ Metropolitan integrally formed on the edge of the slider 2b ₁ A cylindrical body 2b ₃ shown in the example integrated with the hollow stem is formed at the center.

3 is an outside air introduction valve which is provided on the slider 2b ₁ of the air piston 2b and is opened only when outside air (air) is introduced into the air cylinder 2a. 4 is an example provided on the bottom wall 2a ₁ of the air cylinder 2a. This is a three-point check valve. The check valve 4 is opened only when pressurized air is ejected into the container body 1.

5 is a pressure relief valve provided on the slider 2b ₁ of the air piston 2b. The pressure release valve 5 is formed integrally with the slider 2b ₁ and has a case 5a formed with a path r penetrating from the compression side g to the back side g ₁ of the air piston 2b, and a spring 5b in the case 5a. And a spring presser 5d that abuts against the rear end of the spring 5b.

  The valve body 5c of the pressure release valve 5 is pressed toward the compression side g of the air cylinder 2a. However, the pressure in the container body 1 increases so much that the check valve 4 cannot eject air. In this case, the valve body 5c is pushed toward the back side of the air piston 2b against the urging force of the spring 5b due to the pressure in the air cylinder 2a, whereby the valve body 5c is separated from the seating surface. 1 is opened, and the air passing through the path r is released to the atmosphere through the outside air introduction path as indicated by the arrow in the enlarged view of the main part of FIG. 1, and the container body 1 retains at least the initial external shape. The pressure is maintained at a necessary level.

  Reference numeral 6 denotes a liquid pump provided so as to have a concentric double arrangement inside the air cylinder 2a in the radial direction. The liquid pump 6 has a suction port h for sucking the contents, and forms a discharge path for the contents to be sucked (molded integrally with the air cylinder 2a of the air pump 2). And a liquid on-off valve 6b that opens and closes the discharge path in synchronism with the air piston 2b by the liquid cylinder 6a, and a hollow stem 6c that is linked at an upper portion of the liquid on-off valve 6b.

Liquid-off valve 6b of the liquid pump 6, a piston 6b ₁ slidable hollow cylindrical shape along the inner wall of the liquid cylinder 6a, is formed on the inner surface of the hollow stem 6c through an opening of the piston 6b ₁ The valve body 6b ₂ is fixedly held by a plurality of vertical ribs 6c _{1 and the} like, and the spring 6b ₃ elastically supports the valve body 6b ₂ in the liquid cylinder 6a.

  A nozzle head 7 is connected to the hollow stem 6c and ejects the contents in the container body 1 through the hollow stem 6c by opening the liquid on-off valve 6b.

  The nozzle head 7 is provided with a nozzle 7 a on the outer peripheral wall thereof, and the air pump 2 and the liquid pump 6 are operated by repeatedly pushing and returning the nozzle head 7. And the air is blown into the container main body 1 to keep the outer shape of the container at the initial shape.

  8 is a ball-type valve element (check valve) disposed in the ejection path of the hollow stem 6c, and 9 is a suction pipe connected to the suction port h of the liquid pump 6 and extending toward the bottom of the container body 1. .

  The suction pipe 9 can be formed at its lower end with a notch 9a that abuts the bottom of the container body 1 and allows the contents to flow into the peripheral wall portion. When the notch 9a is provided, the notch 9a is provided. Therefore, the lower end of the suction pipe 9 can be brought into contact with the bottom of the container body 1 to function as a column of the container body 1.

  Reference numeral 10 denotes a base cap for fixing and holding the liquid pump 6 together with the air pump 2 to the mouth portion 1 a of the container body 1. The base cap 10 has a peripheral wall 10a having a threaded portion that engages with the outer wall of the mouth 1a of the container body 1, and a ceiling wall 10b that is integrally connected to the upper end of the peripheral wall 10a to form a downwardly open space region. And a guide cylinder 10c that stands up at the center of the top wall 10b and allows the base of the nozzle head 7 (a vertical cylinder fitted to the hollow stem 6c) to pass therethrough. The air pump 2 is fixedly held together with the liquid pump 6 by sandwiching the upper end flange portion of the air cylinder 2a of the air pump 2 between the front end surface of the mouth portion 1a of the main body 1.

Further, 11 is a through hole provided in the peripheral wall of the valve body 6b ₂ and allows the contents to pass through, and 12 is a vertical rib provided on the outer surface of the peripheral wall of the valve body 6b ₂ . _Two through holes 11 are provided at opposite positions around the valve body 6b ₂ and three vertical ribs 12 are formed between the through holes 11 on one side as an example (FIG. 3B). reference).

Upon removal of the force to push in the state shown in FIG. 2 most pushed it a nozzle head 7, hollow stem 6c is pushed up by the urging force of the spring 6b ₃ of the liquid pump 6, air piston 2b is upward 1, the liquid on-off valve 6b is in the state shown in FIGS. 3 (a) and 3 (b). On the other hand, in the air pump 2, the guide cylinder 10c of the base cap 10 is moved. Then, air is introduced into the air cylinder 2 a through a gap (not shown) formed between the nozzle head 7 and the base body and the outside air introduction valve 3.

  When the nozzle head 7 is pushed in again, the liquid on-off valve 6b in the liquid cylinder 6a is opened as shown in FIG. 4, and the content passes from the nozzle 7a of the nozzle head 7 to the outside through the ejection path of the hollow stem 6c. The air in the air cylinder 2 a is pressurized and compressed, and is jetted into the container body 1 through the check valve 4. As a result of supplying air into the container main body 1, the container main body 1 is always held in the initial shape, and even if it is a thin-walled container, self-sustainability is ensured until the contents are used up and the external shape is stable. Maintained.

  When the pressure in the container body 1 is higher than the pressure in the air cylinder 2a, the check valve 4 is not opened and air cannot be ejected into the container body 1, but at this time, the air cylinder The air in 2a is discharged through the pressure release valve 5 to the outside of the container through the back side of the air piston 2b, and the pressure in the container body 1 is kept substantially constant.

  The thin-walled container with a pump having the above-described configuration is a configuration example in which the appearance of the container body 1 can be maintained and the contents can be discharged by introducing air into the filling space M and increasing the pressure in the filling space M. As shown, a valve body (check valve) is separately arranged at the inner lower end of the liquid cylinder 6a, and the contents sucked into the liquid cylinder 6a are pressurized, compressed and discharged to the outside. It is also possible to apply a liquid pump, and in this case, the external shape of the container body 1 is not impaired.

  The thin-walled container with a pump according to the present invention is effective in reducing the amount of waste by using less raw material (synthetic resin) constituting the container body 1 and can be collected in a small amount when discarded. There are advantages.

  It is possible to provide a thin-walled container with a pump that can effectively use resources, reduce the amount of garbage, and stabilize the external shape of the container body.

DESCRIPTION OF SYMBOLS 1 Container body 1a Mouth part 2 Air pump 2a Air cylinder 2b Air piston 3 Outside air introduction valve 4 Check valve 5 Pressure release valve 5a Case 5b Spring 5c Valve body 5d Spring presser 6 Liquid pump 6a Liquid cylinder 6b Liquid on-off valve 6c Hollow stem 7 Nozzle head 7c Nozzle 8 Valve body 9 Suction tube 10 Base cap 10a Peripheral wall 10b Top wall 10c Guide tube 11 Through hole 12 Vertical rib M Filling space h Suction port r Path

Claims (3)

A thin-walled container body that forms a filling space for the contents and can be reduced as the contents are discharged, and is suspended and held at the top of the filling space through the mouth of the container body. A thin-walled container with a pump comprising an air pump for supplying compressed air into the filling space by reciprocating
When the air cylinder is provided with a check valve that opens only when air is jetted into the container body, and when the air piston becomes unable to jet air due to the pressure increase in the container body A thin-walled container with a pump, which is provided with a pressure release valve that opens and discharges air in an air cylinder toward the outside of the container.   The pressure release valve is elastically supported toward the compression side of the air cylinder in the case having a path penetrating from the compression side of the air piston toward the opposite side, and abuts against the seating surface of the path. The thin container with a pump according to claim 1, comprising a valve body that holds the path closed.   A liquid pump for ejecting the contents in the container body is provided inside the air cylinder in the radial direction. The liquid pump includes a liquid cylinder that forms a discharge path for the contents, and an air piston in the liquid cylinder. A liquid on-off valve that opens and closes a discharge path in synchronization with the liquid on-off valve, a hollow stem that is linked to the liquid on-off valve, and a nozzle head that is connected to the hollow stem and ejects contents by opening the liquid on-off valve. The thin container with a pump of Claim 1 or 2 provided.

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