JP4953967B2 - Spout head - Google Patents

Description

  The present invention relates to an ejection head that is suitable for discharging an appropriate amount of contents in a container by attaching to a stem or the like such as an aerosol container using a pressurized medium or a container with a pump with priming. .

  In a container for storing cosmetics such as a milky lotion or a container for storing shampoo, rinse, hairdressing or the like, an ejection head that can discharge an appropriate amount of the contents in the container by a pressing operation is mounted.

  By the way, in this type of ejection head, the nozzle ejection port is normally left open, and when the contents remaining in the ejection head are solidified, the ejection head is smooth. There was a disadvantage that it could not be operated.

In recent years, in order to solve the above-described conventional problems, a nozzle pin having a tip portion that fits the nozzle outlet is incorporated in the head body of the ejection head, and the nozzle pin is only used for pressing the ejection nozzle. An ejection head having a structure in which the nozzle outlet is slid to open is proposed (see, for example, Patent Document 1), and an attempt is made to avoid solidification of the contents remaining in the ejection head. However, the conventional ejection head has a structure in which an engagement plate is linked to the rear end portion of the nozzle pin (sliding rod) and slides, and the length of the nozzle pin tends to be increased. It was difficult to downsize.
Patent No. 3814753

  An object of the present invention is to propose a novel ejection head capable of avoiding the conventional problems as described above.

The present invention has a cylindrical body that fits into the stem of a container, and a base that can be moved in accordance with the movement of the stem, and is slidably covered with the base, and an outlet space for contents is defined inside the base. A head body, a nozzle section that has a passage connected to the exit space of the head body, and ejects the contents that have passed through the exit space toward the outside, and is elastic to be slidable along the axis within the nozzle section A jet head provided with a shut-off pin that opens a jet port of a nozzle part by sliding backwardly according to the pushing of the head main body,
The nozzle part comprises a body part that fits into the opening of the head body, and a tip part that is connected to the tip of the body part and protrudes at the side wall of the head body,
The shut-off pin is connected to a main body portion having a tip adapted to a nozzle outlet of the nozzle portion, leaving a flow passage for contents in the main body portion, and slidably abuts against an inner wall surface of the trunk portion. It consists of a cylinder with an annular seal,
In at least two places of the body portion, a recess that penetrates the peripheral wall portion and opens toward the rear end portion is provided,
On the side wall of the cylindrical body, there is provided an arm that has a notched part with an inclination, and that fits into the recess and slides the shut-off pin within the nozzle part using the part as a guide,
On the bottom wall of the base, there is an upright piece that has an inclined tip that matches the notch of the arm, and slides the arm along the notch of the tip along the inclination of the tip as the head body is pushed in. An ejection head characterized by being provided.

  The nozzle part is provided with a recess that opens toward its rear end, and the cylinder arm that constitutes the shut-off pin is fitted to the recess of the nozzle part to guide the part to shut off. Since the pin is slid in the nozzle portion, it is not necessary to extend the length of the pin and connect it to the engagement plate at the rear end portion, and the structure can be simplified and reduced in size.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
1 to 4 are diagrams schematically showing an embodiment of an ejection head according to the present invention, FIG. 1 is a diagram showing a side surface of the ejection head in section, FIG. 2 is a sectional view taken along the line AA in FIG. FIG. 4 is a cross-sectional view taken along the line BB of FIG. 1, and FIG. 4 is an external perspective view showing an exploded state of the shut-off pin.

  Reference numeral 1 in the figure denotes a container stem. By pressing the stem 1 from above to below, the contents in the container are discharged. 2 is the base. This base 2 has a base 2a fitted to the stem 1 of the container, an inner cylinder 2b having a passage connected to the passage of the stem 1 provided on the base 2a, and a bottom wall 2c integrally connected to the lower end of the base 2a. The peripheral wall 2d is integrally connected to the edge of the bottom wall 2c and surrounds the base 2a. Guide walls 2e each having a vertical groove f (see FIG. 2) are provided at opposing positions of the peripheral wall 2d. ing.

  Reference numeral 3 denotes a head body. The head body 3 includes a top wall 3a that forms a pressing portion of the ejection head, a peripheral wall 3b that is integrally connected to the edge of the top wall 3a to form an opening that opens downward, and a top wall on the inside of the peripheral wall 3b. 3a is formed by a cylindrical body 3c that slidably inserts the inner cylinder 2a to define a content outlet space M. The inner surface of the peripheral wall 3b conforms to the vertical groove 2d of the base 2 A convex portion 3d (see FIG. 2) is formed (the convex portion 3d functions as a positioning member for the head body 3 of the base 2).

  Reference numeral 4 denotes a nozzle portion for ejecting the contents that have passed through the exit side space M to the outside through a passage (horizontal cylinder) 3c ′ provided in the cylinder 3c, and the ejection port n. The nozzle portion 4 includes a body portion 4a that fits into an opening K formed in the peripheral wall 3b of the head body 3, and a tip portion 4b that is connected to the body portion 4a and protrudes outside the head body 3.

5 is a shut-off pin. The shut-off pin 5 is connected to a main body portion 5a having a tip adapted to the nozzle n of the nozzle portion 4, and the main body portion 5a, leaving a flow passage 5a ′ (see FIG. 1) for contents, and the body. A cylindrical body 5b having annular seal portions P ₁ and P ₂ slidably abutting on the inner wall surface of the portion 4a and the horizontal cylinder 3c ′ connected to the cylindrical body 3c of the head main body 3, and the main body portion 5a is connected to the cylindrical body 5b. And a spring 5c that elastically supports (presses the body portion 5a toward the ejection port n), and L-shaped arms 6a and 6b are provided at opposing positions on the side wall of the cylindrical body 5b. . The arms 6a and 6b have inclined notches 6a ₁ and 6b _{1 that} are opened downward at their tips (see FIG. 4).

  Further, 7a and 7b are recesses provided at two locations (opposing positions) of the body portion (circumferential wall) 4a of the nozzle portion 4 (see FIG. 4). The recesses 7a and 7b have a cutout shape that penetrates the peripheral wall and is open toward the rear end.

8a and 8b are upright pieces provided on the bottom wall 2c of the base 2. The standing pieces 8a and 8b have inclined end portions 8a ₁ and 8b ₁ that fit into the notches 6a ₁ and 6b ₁ of the arms 6a and 6b at the upper ends thereof, and the arm 6a and 6b can be slid along the inclination of the front end portions 8a ₁ and 8b ₁ at the notches 6a ₁ and 6b ₁ .

  The ejection head having the above-described configuration has a length L that allows the shut-off pin 5 to be accommodated in an area extending from the base 2 to the inner cylinder 2a (see FIG. 1), and standing pieces 8a and 8b at the lower part thereof. Since the shut-off pin 5 can be slid and provided, the ejection head can be downsized and the structure can be simplified.

  In order to eject the contents in the container by the ejection head, the following procedure is followed.

When you put your finger on the top wall 3a of the head body 3 and push the head body 3 downward, the head body 3 first slides with respect to the base 2 within the range of the dimension t (see Fig. 1). The arms 6a and 6b slide along the inclinations of the tip portions 8a ₁ and 8b ₁ of the standing pieces 8a and 8b at the notches 6a ₁ and 6b ₁ so that the shut-off pin 5 slides back along the axis. Thus, the tip of the main body portion 5a is separated from the jet port n of the nozzle part 4, and the jet port n is opened. FIG. 5 shows the positional relationship between the arms 6a and 6b and the standing pieces 8a and 8b at the initial position of the shut-off nozzle 5 (before the head body 3 is pressed), and the shut-off nozzle 5 slides backward by the pressing of the head body 3. FIG. 6 shows the relationship between the arms 6a and 6b and the upright pieces 8a and 8b in a state where the nozzle n is opened.

  After the movement of the head body 3 with respect to the base 2 is stopped, the force applied to the pressing shifts to a force that presses the stem 1 of the container, and the contents discharged from the stem 1 are the outlet space M, the cylinder 3c. The passage 3c ′ and the flow passage 5a ′ of the main body portion 5a are ejected from the ejection port n toward the outside.

  In order to stop the ejection of the contents, it suffices to remove the force applied to the head body 3, and the shut-off pin 5 immediately returns to the initial position and closes the ejection port n.

  The ejection head according to the present invention can be applied to any container regardless of whether it is an aerosol type container or a pump (accumulation pressure type) container as long as the contents are ejected by pressing the stem. There is no limitation on this point.

  A jet head that can be reduced in size and simplified in structure by shortening the shut-off pin can be provided.

It is the figure which showed embodiment of the ejection head according to this invention. FIG. 2 is a view showing an AA cross section of the ejection head shown in FIG. FIG. 2 is a view showing a BB cross section of the ejection head shown in FIG. It is the figure which showed the decomposition | disassembly state of the shut-off pin. It is explanatory drawing of the operating condition of a shut-off pin. It is explanatory drawing of the operating condition of a shut-off pin.

Explanation of symbols

1 stem
2 base
2a Inner cylinder
2b Bottom wall
2c wall
2d vertical groove
3 Head body
3a Top wall
3b wall
3c cylinder
3d convex
4 Nozzle part
4a Body part
4b Tip
5 Shut-off pin
5a Body part
5b cylinder
6a arm
6b arm
7a recess
7b recess
8a Standing piece
8b Standing piece
M Outlet space
K opening
P ₁ annular seal
P _2- ring seal

Claims (1)

A base that has a cylindrical body that fits into the stem of the container, is movable in accordance with the movement of the stem, a head body that slidably covers the base, and forms an exit space of contents inside the base; A nozzle part having a passage connected to the outlet side space of the head body and ejecting contents passing through the outlet side toward the outside, and an elastically supported head body slidably along the axis within the nozzle part A jet head equipped with a shut-off pin that opens the jet port of the nozzle part by sliding backward according to
The nozzle part comprises a body part that fits into the opening of the head body, and a tip part that is connected to the tip of the body part and protrudes at the side wall of the head body,
The shut-off pin is connected to a main body portion having a tip adapted to a nozzle outlet of the nozzle portion, leaving a flow passage for contents in the main body portion, and slidably abuts against an inner wall surface of the trunk portion. It consists of a cylinder with an annular seal,
In at least two places of the body portion, a recess that penetrates the peripheral wall portion and opens toward the rear end portion is provided,
On the side wall of the cylindrical body, there is provided an arm that has a notched part with an inclination, and that fits into the recess and slides the shut-off pin within the nozzle part using the part as a guide,
On the bottom wall of the base, there is an upright piece that has an inclined tip that matches the notch of the arm, and slides the arm along the notch of the tip along the inclination of the tip as the head body is pushed in. A jet head characterized by being provided.

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