JPH0667358U - Liquid injection device - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a liquid injection device in which the pressing head of the injector main body and the outer wall portion of the screw cap for attaching the injector main body to the mouth of the container body are independent parts of the reusable outer cover. . [Structure] The outer wall portion of the screw cap 1 for attaching the injector body to the container body 3 is separated to form a cylindrical exterior cover 10 as an independent component, and the outer wall portion of the push-down head 2 of the injector body is separated. A cap-shaped exterior cover 17 with an independent window 14 is provided, and the tubular exterior cover 10 is an elastic engagement piece 9 at the lower end of the peripheral wall.
A structure in which the cap-shaped exterior cover 17 is detachably engaged with and attached to the outer surface of the screw cap main body 7 through the group, and the outer surface of the communication tube 13 with the nozzle tube 11 through the elastic engagement piece 16 group of the inner small diameter cylindrical arrangement. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquid ejecting apparatus using a manually operated pump.

[0002]

[Prior art]

 This type of liquid ejector is one in which the injector body is attached to the mouth and neck of the container body with a screw cap, and it is very well known without exemplifying it. It has a cylinder installed in the upper part, the lower end communicates with the cylindrical piston in this cylinder, and the nozzle pipe is projected from one side to the upper end of the system that is urged by the return spring and rises to the outside above. The push-down head is connected in communication, the suction pipe hangs downward from the bottom of the cylinder, the suction valve is installed in this opening, and the discharge valve is installed in the stem. This pushes down the pressing head to pressurize the liquid in the cylinder, open the discharge valve, and eject the liquid from the nozzle pipe.

When the liquid injection is completed and the pressing of the pressing head is stopped, each part returns to its original state by the return spring. At this time, since the cylinder becomes negative pressure, the suction valve opens and suction rises. The liquid in the container is sucked up through the tube to prepare for the next injection.

In this type of injection device, recently, a system in which a cylindrical piston is separated from a stem to be free and a piston that is delayed by one tempo from a manually movable part during push-down injection and return is also used as a discharge valve is adopted. Has been done. For example, Japanese Patent Application No. 2-912802 is an example.

[0005]

[Problems to be solved by the device]

 This type of liquid ejecting apparatus is usually disposable and is not preferable in terms of environmental measures, and therefore, it is considered to employ a so-called refill method.

However, since the movable portion that is repeatedly pushed down is heavily worn, it is not possible to reuse it in terms of performance, and the container that stores the liquid remains dirty and difficult to reuse.

[0007] Therefore, the target portion to be replaced is a non-wearing portion, which is narrowed to a portion which is not contaminated with liquid. Specifically, the outer wall of the push-down head of the injector body and the outer wall of the screw cap that attaches the injector body to the mouth of the container.

The present invention is to obtain a liquid ejecting apparatus having a reusable exterior cover by separating the push-down head of the injector main body and the outer wall portion of the screw cap that attaches the injector main body to the mouth of the container body. .

[0009]

[Means for Solving the Problems]

 In the liquid ejecting apparatus of the present invention, an inward flange 5 projecting from the upper part of the peripheral wall 4 screwed onto the outer surface of the neck of the container 3 is fitted to the upper end opening peripheral edge of the cylinder 6 to fit the cylinder 6 inside the container 3. On the outer surface of the peripheral wall 4 of the screw cap main body 7 provided in the upper portion, a cylindrical outer cover 10 having a lower end formed into a group of a plurality of elastic engaging pieces 9 by a split groove 8 in the circumferential direction is provided. A screw cap 1 that is replaceably engaged and fitted through a pipe 9; and a nozzle pipe 11 protruding from one side to the outer surface of the communication pipe 13 that is communicatively coupled to the upper end of a system 12 that is raised from the cylinder 6 to the outside. A vertical window 14 through which the nozzle pipe 11 is inserted is opened, and a cap-shaped outer cover 17 in which a large number of elastic engaging pieces 16 are hung vertically from the rear surface of the central portion of the top plate 15 is attached to the elastic engaging pieces 16. Configuration including a push-down head 2 that is engaged and mounted so as to be replaceable via a group It is intended.

[0010]

[Action]

 In the liquid ejecting apparatus having the above structure, when the liquid contained in the container body 3 is ejected and ejected, the tubular outer cover 10 and the cap-shaped outer cover 17 are removed, and the other parts are discarded. Either the tubular outer cover 10 or the cap-shaped outer cover 17 may be removed first.

In the case of the tubular outer cover 10, the cover 10 is strongly pulled upward to release the engagement state of the group of elastic engagement pieces 9 with the peripheral wall 4 of the screw cap body 7, and then removed upward. Good.

Similarly, in the case of the cap-shaped exterior cover 17, the elastic engagement pieces 16 and the communication pipe 13 are released from the engagement state by strongly pulling them upward, and then the lower edge of the window 14 contacts the nozzle pipe 11. The nozzle tube 11 may be detached from the nozzle tube 11 with the window 14 tilted toward the nozzle tube 11 side.

[0013] These two outer covers 10 and 17 that have been removed can be set in a new injector body by attaching them in the reverse order of the above removal, and their replacement work is easy and easy for consumers. You can handle it.

[0014]

【Example】

 An embodiment will be described below with reference to the drawings. In the liquid ejecting apparatus of the present invention, the outer wall portions of the screw cap 1 and the pressing head 2 are separated into replaceable external covers 10 and 17, respectively. It is characterized by

The screw cap 1 is formed of a screw cap main body 7 and a cylindrical outer cover 10 that is detachably engaged with the outer surface of the peripheral wall 4 of the screw cap main body 7.

The screw cap main body 7 has a flange 5 projecting inwardly from the top of the peripheral wall 4 having a thread groove formed on the inner surface thereof, and an inverted U-shaped holding portion 18 provided on the inner peripheral edge of the inward flange 5. The fixed side guide tube 19 is erected from the upper end of the peripheral wall 4, and the upper end opening peripheral edge of the vertical cylinder 6 is fixed by a sandwiching portion 18, and the peripheral wall 4 is screwed onto the outer surface of the mouth / neck portion of the container body 3. The cylinder 6 is fixed to the upper part inside the container body 3.

As shown in FIG. 2, a plurality of vertical grooves 20 are formed in the circumferential direction in the lower portion of the outer surface of the screw cap body 7, and an engaging projection 21 is projected on the outer surface immediately below the vertical groove 20. It is set up.

The tubular exterior cover 10 is formed by externally fitting and fixing the outer cylinder 23 on the outer surface of the inner cylinder 22. The inner cylinder 22 has vertical strips 24 which engage with the vertical grooves 20 in the circumferential direction of the inner surface and is formed in the circumferential direction, and the lower end peripheral wall is provided with the split grooves 8 in the circumferential direction and has a large number of elastic engagements. It has a straight cylindrical shape formed on the piece 9.

On the other hand, the outer cylinder 23 is one size larger and thinner than the inner cylinder 22, and a small-diameter cylinder 25, which is reduced in diameter in a stepwise manner from the upper end, is erected upright. The outer cylinder 23 is integrally fitted on the outer surface of the inner cylinder 22 to form the outer cover 10 in a shape provided with 26. In this case, an adhesive may be used to integrate the two cylinders 22 and 23. The small diameter cylinder 25 covers the outer surface of the fixed side guide cylinder 19 of the screw cap body 7.

This tubular outer cover 10 is pushed into the outer surface of the screw cap body 7 from above, and at this time, each vertical strip 24 is engaged with each vertical groove 20 to prevent rotation, and the elastic engaging piece 9 at the lower end. The group is engaged with the engaging ridge 21 so that it is rigid and yet is detachably sheathed.

Next, the push-down head 2 is formed of a communication pipe 13 with a nozzle pipe 11 and a cap-shaped exterior cover 17 that is detachably engaged and mounted on the outer surface of the communication pipe 13.

The communication pipe 13 projects the nozzle pipe 11 laterally outward from one side and is communicatively coupled to the upper end of the stem 12, and projections 27, 27 for engagement are projected on both sides of the outer surface of the middle abdomen.

The cap-shaped exterior cover 17 is formed by integrally fitting an outer cap 29 on the outer surface of the inner cap 28.

The inner cap 28 has an opening at the center of the top wall 30, and a cylindrical portion provided with an engaging projection 31 on the inner periphery of the lower end is hung from the peripheral edge of the opening, and the cylindrical portion is discontinuous in the circumferential direction. It has a shape in which a plurality of elastic engaging pieces 16 are formed by inserting a split groove 32, and an open portion is formed by cutting out from the front surface side of the top wall 30 to the front surface lower part of the peripheral wall.

The outer cap 29 is one size larger than the inner cap 28 and has a vertically long window 14 opened on one side of the front surface. It is fitted and attached integrally. In this case, it may be fixed with an adhesive or the like. At this time, the vertical groove on the lower front surface of the outer cap 29 is engaged with the vertical groove 33 on the lower front surface of the inner cap 28 to prevent rotation.

The cap-shaped exterior cover 17 is inserted in a tilted state through the nozzle pipe 11 through the window 14 and then pushed over the communication pipe 13 to engage the elastic engagement pieces 16 with the engagement protrusions 27, 27 to be integrated. However, it is detachably attached. The cap-shaped exterior cover 17 also serves as a movable guide tube.

It is assumed that both the cylindrical outer cover 10 and the cap-shaped outer cover 17 are formed of a synthetic resin material and their surfaces are beautifully made up. However, if necessary, the outer cylinder 23, It does not prevent the use of a metal material having high cosmetic properties as the outer cap 29.

In this embodiment, the tubular outer cover 10 and the cap outer cover 17 may be exchanged when the liquid is ejected and sprayed as follows. The tubular outer cover 10 is strongly pulled upward with respect to the screw cap main body 7, the elastic engagement pieces 9 group is deformed to disengage the engagement pieces 9 from the engaging projections 21, and then the upward direction is taken. remove.

Similarly, the cap-shaped outer cover 17 is also strongly pulled upward with respect to the communication pipe 13 and the elastic engagement pieces 16 are deformed to engage these engagement pieces 16 groups from the engagement protrusions 27, 27. After that, the outer cover 17 is lifted up to a position where the window 14 comes into contact with the nozzle tube 11, and then tilted toward the nozzle tube 11 side, and removed from the nozzle tube 11 with the window 14.

When setting both exterior covers 10 and 17 on a new injector main body, they can be attached in the reverse order of the above removal, and can be easily set and reset by the consumer.

Since the injector main body is described above and is a very well-known matter, only the part shown in the drawing will be cited and briefly described.

In FIGS. 1 and 2, 6 is a cylinder, 34 is a suction pipe which is connected to the bottom opening of the cylinder 6 and hangs downward in the container body 3, and 35 is one side of the lower half body of the stem 12. The reference numeral 36 denotes a discharge hole, and 36 is a free cylindrical piston that doubles as a discharge valve that opens and closes the discharge hole 35. Effectively, the push head for the movable part is manually pressed during both push injection and return ascent. 2. It operates one tempo later than the stem 12.

That is, when the stem 12 is pushed down against the return spring (not shown) via the push-down head 2, the discharge hole 35 is disengaged from the piston 36 and the discharge valve is opened. The liquid in the cylinder 6 is pressurized because it is pushed downwards, and this pressurized liquid is injected from the discharge hole 35 through the stem 12 and the nozzle pipe 11 to the outside.

At the time of returning, the stem 12 and the pressing head 2 are returned to ascend, the discharge hole 35 is blocked by the piston 36, the discharge valve is closed, and in this state, the return movement is performed upward, so that the inside of the cylinder 6 is negative. The pressure is increased, and a suction valve (not shown) is opened, the liquid in the container body 3 is sucked up by the cylinder 6 through the suction pipe 34, and returns to the original state.

The present invention can be applied to various types of containers such as water column injection, cream injection, and atomization injection.

[0036]

[Effect of device]

 As described above, in the liquid ejecting apparatus of the present invention, the screw cap 1 for attaching the injector main body to the container body 3 and the outer wall portion of the push-down head 2 of the injector main body are separated to form the outer cover 10, Since it is made as an independent component as 17 and both exterior covers 10 and 17 can be replaced and reused, the disposable amount can be reduced and it is effective in environmental measures. Both exterior covers 10 and 17 are easily replaceable, so that they can be replaced by consumers without any trouble.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment in which a main part is shown in a longitudinal section.

FIG. 2 is an external perspective view of the injector main body of the embodiment without an outer cover.

FIG. 3A is an external perspective view of a cylindrical outer cover of the same embodiment,
b is an exploded perspective view.

FIG. 4A is an external perspective view of a cap-shaped exterior cover of the same embodiment, and b is an exploded perspective view.

[Explanation of symbols]

 1 Screw cap 2 Push-down head 7 Screw cap body 10 Cylindrical outer cover 13 Communication pipe 17 Cap-shaped outer cover

Claims (1)

[Scope of utility model registration request] 1. A cylinder 6 is internally installed in the upper part of the container body 3 by sandwiching an upper end opening peripheral edge of a cylinder 6 with an inward flange 5 projecting from the upper part of a peripheral wall 4 screwed to the outer surface of the container body 3 neck. A cylindrical outer cover 10 is formed on the outer surface of the peripheral wall 4 of the screw cap main body 7, the lower end of which is formed into a group of a large number of elastic engaging pieces 9 by a split groove 8 in the circumferential direction. A screw cap 1 fitted and fitted to the communication pipe, and a communication pipe which is connected to the upper end of a stem 12 which projects a nozzle pipe 11 from one side and rises upward from the cylinder 6 to the outside.
13 On the outer surface, open a vertically long window 14 through which the nozzle tube 11 passes,
In addition, a cap-shaped exterior cover 17 in which a large number of elastic engaging pieces 16 are provided in a cylindrical shape from the back surface of the central portion of the top plate 15 and a push-down head 2 in which the elastic engaging pieces 16 are interchangeably engaged and mounted. Liquid injection device equipped.