JP3537486B2 - Discharge head for liquid container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a discharge head which is attached to the mouth and neck of a container for liquids such as cosmetics and detergents and is used for discharging the liquid.

[0002]

2. Description of the Related Art As a discharge head for discharging a liquid in a container in the form of a spray or a column, those disclosed in Japanese Utility Model Laid-Open Publication No. 52-712 and Japanese Utility Model Publication No. 61-920 have already been disclosed. There is also known a method of changing a discharge state by rotating a head outer body having a discharge nozzle with respect to a main body of a discharge device. They are roughly divided.

As shown in FIG. 5, a head outer body D having a discharge nozzle hole C formed at the front end of a discharge cylinder B having a discharge valve A is screwed into a threaded portion E as shown in FIG. Alternatively, it is a structure that realizes a fixed single discharge state by an undercut structure instead of this.

As shown in FIG. 6, a discharge head for realizing the plurality of discharge states is provided at a front end portion G of a discharge cylinder F having a discharge valve of a discharge device main body.
Is rotatably fitted, the discharge nozzle tip I is fitted to the head shell H, and the head shell H is rotated about the axis OO to communicate with the liquid passage J of the discharge cylinder F. The discharge state is changed by changing the discharge liquid path K on the head outer body H side.

In the structure shown in FIG. 6, a screen piece N having a mesh portion M is usually provided in front of the discharge nozzle hole L in order to change the discharge state. Is integrally connected to the upper portion of the head outer body H by the film hinge P, so that it is necessary to provide a fixing structure for fixing the position of the screen piece N when not in use.

[0006] The discharge heads, which are roughly classified into the above two types, have no commonality as parts, so they are completely separate from a molding die to a manufacturing process, which contributes to an increase in cost and assembly. No measures are taken in terms of simplification of the process, prevention of liquid leakage from the discharge nozzle hole, and maintenance of the position of the screen piece and the like.

[0007]

The existing or already proposed
In view of the problem of the discharge head of the present invention, the present invention
The head inner body is engaged with the fitting concave groove and the fitting ridge.
Positioning and fixing, and discharging
Completed the work of connecting the nozzle hole to the liquid passage of the discharge cylinder
Not only can the assembly process be simplified.
In addition, parts other than members with mating ridges
It is also possible to standardize the vertical process,
Prevent liquid leakage from the spill hole, position the lid piece against the discharge nozzle hole
It is possible to discharge the liquid in a single discharge state.
That it is an object of the present invention to provide a head.

[0008]

According to the first aspect of the present invention, in order to solve the above-mentioned problem, the head inner body is inserted into the head outer body having the discharge nozzle from the axial direction, and the inner surface of the head outer body is formed. A discharge liquid passage communicating with a liquid passage having a discharge valve was formed between the discharge cylinder and the outer peripheral surface of the head inner body.

An axial fitting groove is formed on one of the opposing peripheral surfaces of the head outer body and the head inner body, and the other is fitted with the fitting groove. The fitting ridge in the axial direction is formed, and the positioning and fitting and fixing of the head outer body and the head inner body are performed by fitting the fitting groove and the fitting ridge.

[0010] According to the second aspect of the present invention, two ear pieces parallel to the front end of the head outer body are protrudingly provided to close the outer surface of the discharge nozzle hole of the discharge nozzle tip made of an elastic synthetic resin. The lid piece having a portion, the projecting shafts on both sides thereof are fitted into the shaft holes of the ear pieces with shrink fit, and a buffer portion is formed on the peripheral surface of the discharge nozzle hole on the back surface of the discharge nozzle chip. It has been added to the configuration requirements of the invention of claim 1.

[0011]

According to the invention of the action] claim 1, the head outer body and the head inner contour body, fitted and Gototsujo fitted in the axial direction of the fitting groove and the axial direction, only to inserted axially in, which is fitted and fixed positioned and Ki discharge nozzle hole discharge liquid passage communicated to it de to the discharge tube of the liquid passage of the ejection device through,
The assembly process is simplified.

[0012] Among the head enclosures and the head inner contour body, the Kakukarada formed a Hamagototsujo, if Kakukarada not formed of the fitting convex strip a temporary, head outer body head Since it becomes rotatable with respect to the inner body, the parts other than the parts having the fitting ridges are shared between the discharge head according to the present invention and the discharge head realizing a plurality of discharge states , and the assembling process. of
It is possible to achieve commonality .

[0013] In addition, the manufacturing process of the discharge head according to the present invention can be used as it is, without preparing the mold having the fitting convex part forming part and having the discharge liquid path forming part corresponding to a plurality of discharge states. In addition, it is possible to manufacture a discharge head that realizes a plurality of discharge states, and conversely, it is possible to manufacture the discharge head according to the present invention using the manufacturing process of the discharge head having a plurality of discharge states as it is. It becomes possible.

According to the second aspect of the present invention, the lid piece is securely held at any opening position and does not open and close during the liquid discharging operation.

Further, even if the closing projection of the lid piece is strongly in close contact with the outer surface of the discharge nozzle hole, the buffer on the back surface of the discharge nozzle tip receives and absorbs the close pressure, so that it is deformed around the discharge nozzle hole. Does not occur.

[0016]

1 to 4 show an embodiment in which both the first and second aspects of the present invention are applied. A head cylinder is mounted on a discharge cylinder 1 of a known discharge device, not shown. The body 2 is fitted and fixed in the axial direction from the outside by the cylindrical portion 3.

The head inner body 2 has an outer cylinder 4
In addition, a head outer body 5 is fitted and fixed in an axial direction from an outer side by an outer cylindrical portion 6.

The head inner body 2 projects axially outward,
And a shaft portion 7 concentric with the outer cylinder portion 4.
A shaft tube 8 concentric with the outer tube portion 6 of the head outer body 5 is axially fitted from the outside.

A circular groove 10 is formed in the front end 9 of the head outer body 5 in the axial direction, and a discharge nozzle chip 12 having a discharge nozzle hole 11 is fitted therein.

Discharge liquid passages 15 and 16 are formed between the inner peripheral surface 13 of the head outer body 5 and the outer peripheral surface 14 of the shaft portion 7 of the head inner body 2. Discharge cylinder 1
The discharge liquid passage 16 has a discharge valve not shown, and the discharge liquid passage 16 is connected to a discharge liquid passage 18 that communicates with the discharge nozzle chip 12.

The discharge nozzle tip 12 has a back surface 19.
A plurality of buffer portions 21 having an inner cavity 20 are formed around the discharge nozzle hole 11 at equal circumferential intervals, and a radial gap 22 between the buffer portions 21 is formed by the discharge liquid. It communicates with the passage 18 and with the gap 23 behind the discharge nozzle hole 11.

Outer peripheral surface 24 of shaft cylinder 8 of head outer body 5
A plurality of fitting grooves 25 are formed in the axial direction at a plurality of locations, and an inner peripheral surface 26 of the outer cylindrical portion 4 of the head inner body 2 has
A plurality of fitting ridges 27 in the axial direction that fit in the fitting grooves 25 are formed at positions matching the fitting grooves 25, and the fitting between the fitting grooves 25 and the fitting ridges 27 is performed. In some cases, the head outer body 5 and the head inner body 2 are positioned and fitted and fixed.

The fitting concave groove 25 of the illustrated embodiment is formed on the inner peripheral surface 26 of the outer cylinder portion 4 of the head inner body 2, and the fitting ridge 27 is formed on the shaft cylinder 8 of the head outer body 5. Is also good.

Above the front end 9 of the head shell 5,
Two parallel ear pieces 28 and 29 are protruded, and their axial holes 3 are formed.
Projection shafts 33 and 34 on both upper sides of the cover piece 32 are fitted into the reference numerals 0 and 31 by shrink fitting.

The lid piece 32 is formed of an elastic synthetic resin, and a closing projection 36 is provided on the inner surface 35 so as to be in close contact with the periphery of the outer surface of the discharge nozzle hole 11.
Is sealed, and its position is maintained by the protrusions 33, 3
4, and the lower side of the lid 32 is a finger hook 37.

In the cross-sectional view of FIG . 1 , the fitting groove 25 and the fitting ridge 27 are shown in the same vertical vertical section for clarifying the structure. And FIG.
, The fitting groove 25 and the fitting ridge 2
7, a line QQ connecting the center thereof and the center of the head outer body 5 and the head inner body 2 forms an angle θ with a horizontal line PP passing through the center of the head outer body 5 and the head inner body 2. However, it is not limited to such a deviation.

If only the fitting ridge is omitted,
The outer shell of the head becomes rotatable relative to the inner shell of the head,
Discharge that realizes multiple discharge states by rotating the head shell
A member other than the member having the fitting ridge formed between it and the output head
Parts and the assembly process can be shared,
The ejection head that realizes multiple ejection states can be
The work process to change to a discharge head that realizes only
It becomes easy.

[0028]

According to the first aspect of the present invention, the outer shell of the head is provided.
And the head inner body are fitted in the axial fitting groove and the axial fitting.
Only by fitting in the axial direction while fitting with the ridge, the position
Determine and fix, and connect the discharge nozzle hole to the liquid passage of the discharge cylinder.
Work can be completed and the assembly process can be simplified.
This produces an effect that can be achieved.

According to the second aspect of the present invention, even if the lid is opened at any angle, it is possible to reliably hold the lid at that position without adding any additional structural member.

Further, the discharge nozzle hole is securely sealed by bringing the closing projection of the lid piece into close contact to prevent accidental leakage, and the deformation of the discharge nozzle tip by absorbing and eliminating the contact pressure of the buffer portion. The effect which can prevent is produced.

[Brief description of the drawings]

FIG. 1 is an enlarged vertical sectional view of an example of an embodiment.

FIG. 2 is an enlarged front view of what is shown in FIG.

FIG. 3 is a rear view of the head shell shown in FIG. 1;

FIG. 4 is a front view of a head inner body shown in FIG. 1;

FIG. 5 is an enlarged vertical sectional view of an example of a conventional ejection head.

FIG. 6 is an enlarged vertical sectional view of another example of a conventional ejection head.

[Explanation of symbols]

1 Discharge cylinder 2 Head inner body 5 Head shell 9 Front end of the shell 11 Discharge nozzle hole 12 Discharge nozzle tip 17 Liquid passage 15, 16, 18 Discharge liquid path 19 back 21 Buffer 25 mating groove 27 Mating ridge 28, 29 ear pieces 30, 31 Shaft hole 32 lid pieces 33, 34 protruding axis 36 Closure projection

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B05B 1/00

Claims (2)

(57) [Claims] 1. In a head shell having a discharge nozzle,
A discharge which communicates with a liquid passage having a discharge valve of a discharge cylinder between an inner peripheral surface of the head outer body and an outer peripheral surface of the head inner body, wherein the head inner body is inserted in the axial direction. A liquid passage is formed, and an axial fitting groove is formed on one of the opposing peripheral surfaces of the head outer body and the head inner body, and the fitting groove is formed on one of the other. Is formed, and by fitting the fitting groove and the fitting ridge, the head outer body and the head inner body are positioned and fitted and fixed. Discharge head for liquid container. 2. A head assembly comprising:
A plurality of ear pieces are protruded, and a lid piece having a closed protrusion closely contacting the outer surface of the discharge nozzle hole of the discharge nozzle tip made of synthetic resin having elasticity is provided with a shaft hole of the ear piece by a protruding shaft on both upper sides. 2. The ejection head for a liquid container according to claim 1, wherein a buffer portion is formed around the ejection nozzle hole on the back surface of the ejection nozzle chip.