JPH1059404A - Liquid discharging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispose a liquid discharging apparatus as it is, without sorting into resins and metals by a method wherein a spring for upward urging of an operating member is formed of a synthetic resin material, and the whole body of the liquid discharging apparatus is formed of synthetic resin only. SOLUTION: A spring member 13 made of a synthetic resin is constituted in such a manner that a spring plate 14 having top and bottom both band plates 14b, 14c which extend with a bent part 14a in-between, which is provided into an L-shape when seen from the side surface, is provided in such a manner that the lower surface of a first fitting ring 15 and the upper surface of a second fitting ring 16 may respectively form obtuse angles to the top and bottom band plates 14b, 14c. From the lower surface of the outer rim of the first fitting ring 15, a sliding cylinder 22 is hung, and is fitted on the external surface of the upper end part of a guide cylinder 18, and vertically moves while being guided by the guide cylinder. The lengths of the top and bottom band plates 14b, 14c of the spring plate are made the same, and the pressing force to a depressing head is directly transmitted to the top and bottom, both ends of the spring plate. In this case, respective constituent members including the spring member 13, are all formed of synthetic resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a liquid ejector.

[0002]

2. Description of the Related Art A manual pump type liquid ejector has been widely used as a container for storing shampoo, rinse and the like, and its basic structure is as shown in Japanese Patent Application Laid-Open No. 7-242259. The cylinder is hung down from the mounting cylinder fitted to the mouth and neck into the container body, and from within the cylinder, an operating member having a nozzle press-down head at the upper end is urged upward to stand up. The liquid in the container is sucked into the cylinder by vertical movement, and the liquid in the cylinder is provided so as to be able to be discharged from the nozzle.

[0003]

In the above-mentioned conventional liquid ejector, the spring for urging the operating member upward is made of metal, and the other members are made of synthetic resin.
In order to reuse the resources, it is necessary to separate the metal and the synthetic resin material and discard them, which is considerably troublesome for consumers. In order to eliminate the trouble, if the above-mentioned spring is formed of a synthetic resin material and the whole is formed only of the synthetic resin, the trouble of disassembling the ejector and separating the resin material and the metal material can be omitted.

In the case where the spring is formed of a synthetic resin material and has a structure for supporting an upper member,
The spring always receives a compressive force due to the load of the upper member even when the operating member is released from being depressed, causing a change with time during transportation or use, resulting in a disadvantage that the elasticity of the spring is weakened. In addition, the operating member may move downward during transportation, and the liquid may be inadvertently poured out.

[0005] It is an object of the liquid ejector according to the first and second aspects of the present invention to form all the members constituting the liquid ejector from a synthetic resin material so as to eliminate the above-mentioned disadvantages associated with the use of a metal spring. is there.

A third object of the present invention is to eliminate the above-mentioned drawbacks in the case where the resin spring has a structure in which the upper member is supported, in addition to the above object.

[0007]

As a first means, the cylinder 3 is hung down from the mounting cylinder 1 to be fitted to the outer surface of the mouth and neck of the container body, and is urged upward from the cylinder.
An operating member 6 provided with a cylindrical piston 8 at a lower portion and a depressing head 10 with a nozzle 9 at an upper end of a stem is erected, and the liquid in the container is sucked into the cylinder 3 by the up and down movement of the operating member. In a liquid ejector provided so that liquid in a cylinder can be ejected from the nozzle 9,

The guide tube 18 is erected from the inner peripheral portion of the inward flange 17 at the upper end of the mounting tube 1, and has upper and lower band plates 14b and 14c extending across the bent portion 14a, so that the upper and lower band plates 14b and 14c can be seen from the side. First and second fitting rings 15 and 16 having the same axis are fixed to upper and lower ends of a spring plate 14 provided in a U-shape so as to form obtuse angles with the upper and lower strips of the spring plate. A spring member 13 is provided to suspend the upper surface of the first fitting ring 15 from the top wall 19 of the press-down head 10 so that the axis of the first and second fitting rings coincides with the axis of the stem 7. In a state where the ring is in contact with the lower end of the outer peripheral wall 21, the ring is fitted to the outer surface of the stem fitting cylinder 20 of the press-down head 10, and the lower surface of the second fitting ring 16 is attached to the upper surface of the inward flange 17. In the contact state, the ring is fitted on the outer surface of the guide cylinder 18 and the operating member 6 is attached upward. It is to form further all components of synthetic resin.

As a second means, in the liquid ejector, the inner peripheral portion of the inward flange 17 at the upper end of the mounting cylinder is a raised portion 24, and the upper and lower band plates 14b extending across the bent portion 14a.
, 14c, one end of a connecting plate 23 forming an obtuse angle with respect to the upper band plate of the spring plate is fixed to the upper end of the spring plate 14 provided in the shape of a letter when viewed from the side, and A first fitting ring 15 having an axis perpendicular to the connecting plate is fixed to the other end, and a second fitting ring 16 is attached to the lower end of the spring plate.
A spring member 13 fixed to the lower plate of the spring plate so as to form an obtuse angle with respect to the first and second plates having the same axis.
The first fitting ring 15 is passed through a downward step 26 on the outer surface of the outer peripheral wall 21 hanging from the top wall 19 of the press-down head 10 so that the axis of the fitting ring further coincides with the axis of the cylindrical stem. The ring is fitted to the outer surface of the small outer diameter portion 25 in the lower half of the outer peripheral wall, and the lower surface of the second fitting ring 16 is brought into contact with the upper surface of the inward flange 17. The operating member 6 was urged upward by being fitted to the outer surface 27, and all the constituent members were formed of a synthetic resin material.

As a third means, in the above-mentioned second means, a guide cylinder 18 having an outer diameter substantially the same as the inner diameter of the outer peripheral wall 21 is erected from the upper surface of the raised portion 24, and the outer diameter of the guide cylinder 18 is raised. With a cutout 29 having approximately the same inner diameter and parallel to the axis,
A spacer 28 made of synthetic resin, which is substantially C-shaped in plan,
The spring member was stopped at the upper limit by being detachably fitted to the guide tube 18 such that the upper and lower ends contact the lower end of the outer peripheral wall 21 and the upper surface of the raised portion 24, respectively.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the basic structure of a liquid ejector will be briefly described. Reference numeral 1 denotes a mounting cylinder which is screwed to the outer surface of the neck of a container body.
And a suction pipe 4 is suspended from the lower end of the cylinder. In FIG. 1, the suction valve is formed by a poppet 5.

From inside the cylinder, the operating member 6 stands upright. The actuating member has a cylindrical piston 8 at the lower part of the stem 7 and a press-down head 10 with a nozzle 9 is fitted at the upper end of the stem. The operating member usually has a discharge valve on the upper inner surface of the stem 7, but in the illustrated example, a cylindrical piston 8 is fitted to the lower part of the stem 7 so as to be able to move up and down by a constant stroke.
A discharge valve 12 is formed by the cylindrical piston and a valve hole 11 formed in a lower portion of the stem.

The liquid ejector is not limited to the one shown,
Any type of so-called vertical pump type liquid ejector may be used. The liquid to be discharged can be changed into a mist or a bubble by changing the nozzle, or the liquid can be discharged as it is. However, the present invention includes a liquid that discharges such a mist or a bubble. In the above-mentioned liquid ejector, the operating member 6 is normally urged upward by a metal coil spring. In the present invention, however, the spring member 13 made of synthetic resin is urged upward.

In the embodiment shown in FIG.
Are upper and lower band plates 14b and 14c extending across the bent portion 14a.
The first and second fitting rings 15 and 16 having the same axis are provided on the upper and lower ends of a spring plate 14 provided in the shape of a letter when viewed from the side, and a plane perpendicular to the axis of the ring, that is, FIG. In the first example, for example, the lower surface of the first fitting ring and the upper surface of the second fitting ring are provided so as to form obtuse angles with the upper and lower band plates 14b and 14c of the spring plate.

The mounting of the spring member 13 can be performed as follows. That is, the guide cylinder 18 is erected from the inner circumference of the inward flange 17 attached to the upper end of the mounting cylinder 1, and the top wall of the stem fitting cylinder 20 which is suspended from the top wall 19 of the press-down head 10. 19 The outer peripheral wall 21 hanging down from the outer periphery is formed short, and before the press-down head 10 is fitted to the upper portion of the stem 7, first, the second fitting ring 16 is fitted to the outer surface of the lower end of the guide cylinder 18, Next, after the first fitting ring 15 is fitted on the upper part of the stem fitting cylinder 20, the press-down head 10 is fitted on the upper part of the stem 7.

The first and second fitting rings are arranged such that the first fitting ring 15 has its upper surface in contact with the lower end of the outer peripheral wall 21 so that the respective axes coincide with the axis of the stem 7. The second fitting ring 16 is fitted to the outer surface of the stem fitting cylinder 20 hanging down from the top wall 19 of the press-down head 10, and the second fitting ring 16 is inserted into the inside of the inward flange 17 with the lower surface in contact with the upper surface of the inward flange 17. It is fitted to the outer surface of the guide tube 18 standing upright from the periphery.

In the example of FIG. 1, a ridge is provided on the upper surface of the inner peripheral portion of the first fitting ring 15, and the ridge is provided on the inner surface of the outer peripheral wall 21.
It contacts the outer surface of the stem fitting tube 20 and the lower surface of the nozzle 9. Also, from the lower surface of the outer periphery of the first fitting ring 15, a guide cylinder is provided.
A sliding cylinder 22 having an inner diameter substantially the same as the outer diameter of 18 is provided so as to hang down, fit with the outer surface of the upper end portion of the guide cylinder 18, and move up and down while being guided by the guide cylinder. Further, the upper and lower strips 14b and 14c of the spring plate have the same length, and the pressing force to the pressing head is directly transmitted to the upper and lower ends of the spring plate. According to the above configuration, the vertical movement of the operating member is smooth, and the permanent deformation of the spring member is prevented.

The pressing head 10 against the bias of the spring member 13
When the operating member 6 is moved up and down by releasing the pressure and releasing the pressure, the liquid in the container is sucked into the cylinder 3 through the suction valve 2, and the liquid in the cylinder is discharged from the discharge valve 12. And is discharged from the nozzle 9 through the stem 7.

In the embodiment shown in FIG.
Are upper and lower band plates 14b, 14c extending across the bent portion 14a.
With this configuration, one end of a connecting plate 23 that forms an obtuse angle with respect to the upper band plate 14b of the spring plate is attached to the upper end of the spring plate 14 that is provided in At the end, a first fitting ring 15 having an axis perpendicular to the connecting plate is provided, and at the lower end of the spring plate, a second fitting ring 16 is provided with a surface perpendicular to the axis in the ring. Are formed so as to form an obtuse angle with respect to the lower plate of the spring plate.

When the spring member 13 is mounted, the inner peripheral portion of the inward flange 17 of the mounting cylinder 1 is used as a raised portion 24, and the guide cylinder 18 is erected from the inner peripheral portion of the raised portion. Ten
The outer peripheral wall 21 is provided long, and the lower half of the outer peripheral wall is
Before mounting the press-down head 10, the second fitting ring 16 is mounted on the outer surface of the raised portion 24, and the first fitting ring 15 is mounted on the outer surface of the small outer diameter portion 25, Next, the pressing head 10 is fitted on the upper portion of the stem 7.

The first and second fitting rings are formed such that the first fitting ring 15 has a small outer diameter via a downwardly stepped portion 26 of the outer peripheral wall 21 so that the respective axes are aligned with the axis of the stem 7. Part 25
, And the second fitting ring 16 is fitted to the outer surface 27 of the raised portion 24 on the inner periphery of the inward flange 17 with the lower surface in contact with the upper surface of the inward flange 17.

In the example shown in FIG. 2, the guide tube 18 rising from the upper surface of the raised portion 24 has an outer diameter substantially equal to the inner diameter of the outer peripheral wall 21, and the lower portion of the outer peripheral wall 21 is formed on the upper outer surface of the guide tube 18. It is provided so that it may fit and be guided by the guide cylinder to move the operating member up and down. In the case of FIG. 2, a spacer which disables the operation member 6 from being pressed between the mounting cylinder 1 and the pressing head 10 is used.
28 are fitted. The spacer has an inner diameter substantially the same as the outer diameter of the guide cylinder 18, has a notch 29 parallel to the axis, is a substantially C-shaped flat cylinder, and is provided on the outer peripheral surface opposite to the notch. It has a shape with a handle 30, and is detachably fitted to the guide tube 19 so that the upper and lower ends contact the lower end of the outer peripheral wall 21 and the upper surface of the raised portion 24, respectively, so that the spring member is stopped at the upper limit. I have to.

In the case of the embodiment shown in FIGS. 1 and 2, all the constituent members including the spring member 13 are formed of a synthetic resin material. The spacer is also made of synthetic resin.

[0024]

The present invention has the above-described configuration,
According to the first and second aspects of the present invention, as described in the first and second aspects, the spring member 13 made of synthetic resin is used instead of the metal spring, and all the members are made of synthetic resin material. Can be discarded as is.

Furthermore, in the liquid ejecting apparatus according to the third aspect, in addition to the effects of the liquid ejecting apparatus according to the second aspect, the spring member 13 is kept stationary at the upper limit by the spacer 28. The push-down head 10 is pushed down during transportation with the liquid ejector attached to the body, and therefore the liquid is not inadvertently poured out, and the spring member can be kept in an unloaded state, so that its elasticity is weakened. Nothing.

[Brief description of the drawings]

FIG. 1 is a partially cutaway sectional view of a liquid ejector according to one embodiment of the present invention.

FIG. 2 is a partially cutaway sectional view of a liquid ejector according to another embodiment of the present invention.

FIG. 3 is an enlarged view of a spring member 13 of the discharger in FIG. 2;

FIG. 4 is an enlarged view of a spacer 28 of the dispenser of FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Mounting cylinder 3 ... Cylinder 7 ... Cylindrical piston 9 ... Nozzle 10 ... Push-down head 13 ... Spring member 14 ... Spring plate 15 ... 1st fitting ring 16 ... 2nd fitting ring 18 ... Guide cylinder 28 ... Spacer

Claims (3)

[Claims] 1. A mounting cylinder 1 fitted to the outer surface of the mouth and neck of a container body.
The cylinder 3 is hung down from above, and the cylinder 3 is urged upward from the inside of the cylinder to raise the cylindrical piston 8 at the lower part of the stem 7, the push-down head 10 with the nozzle 9 at the upper end of the stem, and the operating member 6 attached thereto. A liquid ejector provided so that the liquid in the container is sucked into the cylinder 3 by the vertical movement of the operating member and the liquid in the cylinder can be discharged from the nozzle 9; The guide plate 18 is erected from the peripheral portion, and has upper and lower band plates 14b and 14c extending across the bent portion 14a.
First and second fitting rings having the same axis at the upper and lower ends of the
A spring member 13 is attached to the upper and lower strips of the spring plate so as to form an obtuse angle with respect to the upper and lower strips of the spring plate. The axes of the first and second fitting rings coincide with the axis of the stem 7. In such a state that the upper surface of the first fitting ring 15 is in contact with the lower end of the outer peripheral wall 21 hanging down from the top wall 19 of the pressing head 10, the ring is brought into contact with the stem fitting cylinder 20 of the pressing head 10. With the lower surface of the second fitting ring 16 in contact with the upper surface of the inward flange 17, the ring is fitted on the outer surface of the guide cylinder 18, and the operating member 6 is moved upward. A liquid ejector characterized in that it is energized and all the constituent members are made of a synthetic resin material. 2. A mounting cylinder 1 fitted to the outer surface of the mouth and neck of a container body.
The cylinder 3 is hung down from above, and the cylinder 3 is urged upward from the inside of the cylinder to raise the cylindrical piston 8 at the lower part of the stem 7, the push-down head 10 with the nozzle 9 at the upper end of the stem, and the operating member 6 attached thereto. A liquid ejector provided so that the liquid in the container is sucked into the cylinder 3 by the up and down movement of the operating member and the liquid in the cylinder can be discharged from the nozzle 9; Raised part 24
With the upper and lower band plates 14b and 14c extending across the bent portion 14a, the spring plate 14 is provided in a V-shape when viewed from the side.
A connecting plate at an upper end of the spring plate that forms an obtuse angle with the upper band plate of the spring plate.
A first fitting ring 15 having an axis perpendicular to the connecting plate fixed to one end of the connecting plate and another end of the connecting plate;
At the lower end of the spring plate, a spring member 13 having a second fitting ring 16 fixed thereto at an obtuse angle to the lower plate of the spring plate is provided, and the first and second fitting rings having the same axis are provided. The first fitting ring 15 is attached to the lower half of the outer peripheral wall 21 through a downward step 26 on the outer surface of the outer peripheral wall 21 hanging down from the top wall 19 of the press-down head 10 so that the axis of the outer wall further coincides with the axis of the stem. With the lower surface of the second fitting ring 16 abutting on the upper surface of the inward flange 17, the ring is fitted on the outer surface 27 of the raised portion 24. Then, the operating member 6
A liquid ejector characterized in that the liquid ejecting device is urged upward and all the constituent members are formed of a synthetic resin material. 3. A guide tube 18 having an outer diameter substantially equal to the inner diameter of the outer peripheral wall 21 is erected from the upper surface of the raised portion 24, and a notch having an inner diameter substantially equal to the outer diameter of the guide tube and parallel to the axis. A spacer 28 made of a synthetic resin and having a substantially C-shaped plane and having a flat surface 29 is detachably fitted to the guide tube 18 such that upper and lower ends thereof respectively contact the lower end of the outer peripheral wall 21 and the upper surface of the raised portion 24. 3. The liquid ejector according to claim 2, wherein the spring member is stopped at an upper limit.