JP6027311B2 - Priming type dispenser stopper - Google Patents

Description

  The present invention relates to a stopper suitable for use in a priming type dispenser that repeatedly pushes a pressing head and operates a pump to eject contents in a container.

  In a container equipped with a so-called priming type dispenser that operates the pump by repeatedly pushing the pressure head to pour out the contents in the container, the pressure head is inadvertent during the product distribution process. To prevent the outflow of contents due to pushing, to the lower end of the pressing head (between the pressing head and the base cap), to the pump stem or a protective cover that surrounds the pump stem (molded integrally with the base cap) There is provided a stopper that can be attached and detached (see, for example, Patent Document 1).

  This type of stopper is usually C-shaped so that the opening width of the opening part can be expanded as appropriate by elastic deformation of the stopper body in order to realize easy attachment to and removal from the protective cover of the pump stem or base cap. It is common to apply a cylindrical member having a shape forming the following.

  By the way, when an excessive load is applied to the pressure head in the distribution process of the product, the stopper is pushed by the pressure head, and the opening width of the separation opening portion is expanded due to the elastic deformation of the stopper. There is a possibility that the stopper may be displaced or fall off, the function of the stopper itself cannot be performed, and the contents in the container may leak out.

  As a prior art regarding this point, Patent Document 2 discloses a liquid ejection container provided with a cover for preventing the push-down head from being pushed in and sealing the nozzle hole.

  The cover disclosed in Patent Document 2 adopts a structure in which a head covering portion is integrated with a stem covering portion, and the head covering portion can cause a push-down head that can occur in a product distribution process. Although it was expected that the inadvertent push-in could be prevented to some extent, the installation requires a cumbersome operation in which the direction of the cover and the direction of the push-down head must be kept constant. There was a problem that could not be set properly.

Japanese Utility Model Publication No. 63-33646 Japanese Patent No. 4596408

  An object of the present invention is to propose a stopper for a priming type dispenser that can surely avoid the outflow of contents that are a concern during the distribution process of goods and that can be easily set in a pressing head.

The present invention has an end surface that abuts against the lower end surface of the pressing head of the priming type dispenser and the upper surface of the base cap of the extractor to prevent the pressing head from being pushed in, and the pouring located between them. A stopper having a peripheral wall that is detachably held by a pump stem of a container or a protective cover of a base cap that surrounds the pump stem, wherein the pressing head has an injection nozzle and is provided with the injection nozzle The shape of the outer surface in the vicinity is substantially the same as the shape of the outer surface in the vicinity where the injection nozzle is not provided, and the peripheral wall has a window hole that can expose the injection nozzle of the pressing head, A narrow standing wall portion that stands along the outer surface of the pressing head, and a ceiling wall portion that is integrally connected to the upper end portion of the standing wall portion and covers the top surface of the pressing head with a gap therebetween. The peripheral wall has, on its outer surface, one end can contact the end surface under a pressing head, a plurality of reinforcing ribs that can abut against the other end base cap top, one end leads to the lower end of the upright wall portion, the other end is closed and at least one reinforcement rib which can come into contact with base cap top surface, the width of the narrow upright wall portion, priming type dispensing device which is a diameter or less under the pressure head It is a stopper.

  Moreover, it is desirable to provide at least one reinforcing rib extending from the upright wall portion toward the rear side on the back surface of the top wall portion, that is, the surface facing the top surface of the pressing head.

  According to the stopper of the priming type dispenser of the present invention having the above-described configuration, a load (external force) that is not expected in the product distribution process is added because the top wall portion is present on the upper portion of the pressing head. Even so, the ceiling wall receives the load. As a result, the pressing head is pushed in and the opening width of the stopper release opening portion is increased, so that the stopper does not shift or fall off. The upright wall part that supports the top wall part is composed of a narrow plate-like member, so there is nothing around it, so the stopper is placed against the pressing head of the priming dispenser. It can be attached in any direction, and the stopper can be easily set.

Further, according to the priming type dispensing instrument stopper according to the present invention, the outer wall of the peripheral wall, one end in contact with the end surface under a pressing head, a plurality of reinforcing ribs and the other end contacts the base cap top surface, one end Since at least one reinforcing rib connected to the lower end of the upright wall portion and the other end abutting on the upper surface of the base cap is provided, without hindering elastic deformation when the pump stem or the base cap is attached to or detached from the protective cover. The rigidity of the peripheral wall can be increased.

  Furthermore, according to the stopper of the priming type dispenser of the present invention, by providing at least one reinforcing rib extending from the standing wall portion toward the rear side on the back surface of the ceiling wall portion, the strength of the ceiling wall portion itself is provided. Therefore, even if an unexpected external force is applied in the product distribution process, it can be reliably received by the top wall.

FIG. 1 is an external perspective view schematically showing an embodiment of a stopper of a priming dispenser according to the present invention. 2A is a view showing the front of the stopper shown in FIG. 1 (the right half is shown in cross section with the center line as a boundary), and FIG. 2B is a side view of the stopper shown in FIG. FIG. 2 (c) is a view showing a cross section AA of the stopper shown in FIG. 1, and FIG. 2 (d) is a bottom view of the stopper shown in FIG. FIG. FIGS. 3A to 3C are views showing a state in which the stopper shown in FIG. 1 is mounted on a priming type dispenser. FIG. 4 is a view showing the positional relationship between the protective cover of the base cap and the pump stem. FIG. 5 is a view showing another attachment state of the stopper shown in FIG.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is an external perspective view schematically showing an embodiment of a stopper of a priming type dispenser according to the present invention, and FIGS. 2 (a) to 2 (d) are front views of the stopper shown in FIG. It is the figure which each showed the side surface, the AA cross section, and the bottom face. In addition, the stopper of this invention can shape | mold a synthetic resin by applying molding methods, such as injection molding.

  Reference numeral 1 in the figure denotes a peripheral wall that is detachably held by the pump stem of the dispenser. The peripheral wall 1 has a C shape (see FIG. 2 (c)) having a separation opening 1a that opens with a predetermined width (see FIG. 2 (c)), and the separation opening 1a of the separation wall 1a is elastically deformed. The open width w can be increased (see FIG. 2D).

Then, upon attachment to a protective cover surrounding the pump stem or pump stem, while made to abut the upper end surface 1b under end edge of the pressing head (reference numeral 9b in Fig. 3), the upper surface (FIG its lower end face 1c base cap 3, the pressing head is prevented from being pushed.

  Reference numeral 2 denotes a narrow standing wall portion provided integrally with the upper end portion of the peripheral wall 1 at a position facing the separation opening portion 1a. The upright wall portion 2 is composed of a curved plate-like member, and a window hole 2a that allows the injection nozzle of the press head to be exposed is formed above the wall surface portion. Stands along the outer surface of the. In addition, although the standing wall part 2 showed as an example the curved plate-shaped member, as this standing wall part 2, a flat plate-shaped member can also be applied, for example, and it does not specifically limit about a shape. .

  Reference numeral 3 is a top wall portion that is integrally connected to the upper end portion of the upright wall portion 2 and covers the top surface of the pressing head with a space therebetween, and 4 is a back surface of the top wall portion 3 (opposite the top surface of the pressing head). Reinforcing ribs provided on the surface. The reinforcing rib 4 is composed of a rod-like body extending from the upright wall portion 2 toward the rear thereof, whereby the strength of the top wall portion 3 can be increased. In this example, the case where one reinforcing rib 4 is provided is shown, but the number of reinforcing ribs 4 can be increased as appropriate.

  Reference numeral 5 denotes a protrusion provided on the inner surface of the peripheral wall 1. When the stopper is attached to the pump stem or the protective cover, the protrusion 5 contacts the outer surface of the pump stem and performs proper positioning of the peripheral wall 1. Reference numerals 6 and 7 denote rod-shaped reinforcing ribs provided on the outer surface of the peripheral wall 1.

The reinforcing ribs 6 and 7 are shown as an example in the case where one is provided on each side of the peripheral wall 1, and one end 6 a and 7 a can be brought into contact with the lower end surface of the pressing head, and the other end 6 b and 7b can contact | abut on the upper surface of a base cap, and, thereby, the rigidity of the vertical direction in the both sides of the surrounding wall 1 is improved.

  Reference numeral 8 denotes a rod-shaped reinforcing rib provided in front of the peripheral wall 1. The reinforcing rib 8 has one end 8 a integrally connected to the lower end of the standing wall portion 2, and the other end 8 b can be brought into contact with the upper surface of the base cap. Has a function to enhance.

  The case where one reinforcing rib 6 and 7 is provided on each side of the peripheral wall 1 and the case where one reinforcing rib 8 is provided in front of the peripheral wall 1 are shown as an example. The number of reinforcing ribs 8 can be increased or decreased as appropriate, and is not limited to the illustrated one.

  3 (a) to 3 (c) show the stopper according to the present invention so that the injection nozzle (see reference numerals 9 and 9a in FIG. 3) provided on the pressing head passes through the window hole 2a of the standing wall portion 2. It is the figure which showed the state with which the priming type extractor was mounted | worn.

  As shown in FIG. 3, the priming type dispenser includes a pressing head 9 and a pump stem (not shown in FIG. 3 because the pump stem is located inside the protective cover 11a). A pump main body 10 connected via a screw, and a screw-capable base cap 11 (the base cap 11 is fixed to the mouth of the container (not shown) together with the pump stem and the pressing head 9). The pump stem is surrounded by a central portion of the top wall 11a and the upper end portion of the top wall 11a is provided with a protective cover 11b positioned inside the pressing head 9 as an example. By repeatedly pushing the head 9, a piston (not shown) in the pump body 10 is operated via the pump stem, and is installed at the lower end of the pump body 10. Sucking the contents of the container through the suction pipe 12 that is, those for ejecting contents from the injection nozzle 9a of the press head 9 pressurized. The mechanism of the priming type dispenser is not limited to the structure described with reference to FIG. 3 and can be applied to other conventionally known priming type dispensers. FIG. 4 shows the positional relationship between the pump stem and the protective cover 11b.

  In order to attach the stopper according to the present invention to the protective cover 11b of the priming type dispenser having the above configuration, the upper end surface 1b of the peripheral wall 1 is the lower end surface 9b of the pressing head 9, and the lower end surface 1c of the peripheral wall 1 is the base cap. 11, even if an unexpected external force is applied, a direct influence by the external force is cut off by the top wall portion 3, and thereby the external force exerted on the peripheral wall 1. As a result, the function as a stopper can be reliably maintained.

  In particular, the ceiling wall 3 is positioned with a gap t (see FIGS. 3A and 3B) between the pressing head 9 and the ceiling wall 3 is deformed by an excessive external force. However, when the deformation is within the range of the gap t, the external force is not transmitted to the pressing head 9, and therefore the stopper (the peripheral wall 1) is deformed through the pressing head 9 to cause a positional shift or drop off. There is no.

In the stopper according to the present invention, the upright wall portion 2 is narrow, and there is nothing in other parts. For example, the direction (diametrically opposite) as shown in FIG. It is also possible to attach the stopper to the pressing head 9 particularly easily when the consumer uses it daily.

About the width dimension of the standing wall part 2, it is good to set it as the dimension substantially the same as the diameter of the press head 9, or a little smaller than it.

  According to the present invention, it is possible to provide a stopper that can be easily attached (set) to the pressing head without causing positional displacement or falling off due to the pressing of the pressing head.

DESCRIPTION OF SYMBOLS 1 Perimeter wall 1a Separation | release opening | release part 1b Upper end surface 1c Lower end surface 2 Standing wall part 2a Window hole 3 Top wall part 4 Reinforcement rib 5 Protrusion 6 Reinforcement rib 7 Reinforcement rib 8 Reinforcement rib 9 Pressing head 9a Injection nozzle 9b Lower end surface 10 Pump body part 11 Base cap 11a Top wall 11b Protective cover 12 Suction pipe t Clearance w Open width

Claims (2)

A pump stem of the dispenser located between the lower end surface of the pressing head of the priming type dispenser and an end surface that abuts against the upper surface of the base cap of the dispenser and prevents the pushing head from being pushed in. Or a stopper having a peripheral wall that is detachably held by a protective cover of a base cap that surrounds the pump stem,
The pressing head has an injection nozzle, and the shape of the outer surface in the vicinity where the injection nozzle is provided is substantially the same as the shape of the outer surface in the vicinity where the injection nozzle is not provided.
The peripheral wall has a window hole through which the spray nozzle of the pressing head can be exposed, and is integrated with a narrow standing wall portion standing along the outer surface of the pressing head, and an upper end portion of the standing wall portion. linked to provided a top top wall which covers at a gap of the pressing head, wherein the peripheral wall, its outer surface, one end can contact under pressure head end face, the other end base cap A plurality of reinforcing ribs that can be brought into contact with the upper surface, one end connected to the lower end of the standing wall portion, and the other end having at least one reinforcing rib that can be brought into contact with the upper surface of the base cap;
A stopper of a priming type dispenser, wherein a width of the narrow standing wall portion is equal to or smaller than a diameter of the pressing head .   2. The stopper of the priming type dispenser according to claim 1, wherein the top wall portion has at least one reinforcing rib extending from the upright wall portion toward the rear side of the top wall portion.

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