Inner plug for liquid container

Abstract

To provide an inside plug for a liquid container, which prevents the contents from naturally flowing out of a pouring hole when a squeeze container containing a liquid is turned upside down, and allows the contents to be poured out reliably only when a user presses the container. [Solution] The stopper 100 for a liquid container comprises a side wall 10 that makes watertight contact with the inner wall of the opening of the container 200, and a blocking wall 20 that closes the space S enclosed by the side wall 10, and has a groove 40 formed on the outer surface 10a of the side wall 10 of the stopper 100 for a liquid container, the groove 40 extending circumferentially along the side wall 10 and having a meandering shape in the vertical direction. The groove 40 communicates with the interior 200a of the container 200, and forms part of a path for the contents L to be poured out via the stopper 100 for a liquid container to the outside.

Description

[Technical Field]

[0001] This invention relates to a stopper that is attached to a container that contains liquid contents, and in particular to a stopper for a liquid container that allows the contents to be poured out through a flow path in the stopper by turning the container upside down and pressing on its side wall. [Background technology]

[0002] Conventionally, so-called squeeze-type containers, which allow the contents to be poured by manually squeezing the container body, have been widely used as containers for holding liquid contents. These containers use inner stoppers with various types of pouring holes to prevent leakage of the contents while ensuring that the contents can be poured when needed.

[0003] However, with squeeze containers, if the contents are low-viscosity liquids such as water or alcohol, simply turning the container upside down can cause the liquid to flow out of the pouring hole under its own weight due to gravity and viscosity, even without manually pressing the container body. This makes it difficult to control the amount of liquid dispensed, and can cause problems such as dripping and splashing, which can soil the surrounding area.

[0004] Patent Document 1 describes a liquid dispensing tap in which the nozzle hole does not open to the underside of the top wall, as in a normal dispensing tap, in order to prevent the liquid in the container from accidentally splashing out. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Jikko No. 56-49897 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the liquid dispensing tap described in Patent Document 1 is simply configured to open into the container via a through hole and an outflow groove. Therefore, the outflow groove formed in the peripheral wall has a simple linear shape, which limits fluid resistance and backflow control, and there is a risk that sufficient dispensing control may not be possible, especially for low-viscosity liquids.

[0007] To provide an inside plug for a liquid container that prevents the contents from naturally flowing out of the dispensing hole when the container is simply turned upside down, and that reliably dispenses the contents only when the user presses the container, in a container containing a low-viscosity liquid. [Means for solving the problem]

[0008] The stopper for a liquid container according to the present invention is a stopper for a liquid container that is attached to the opening of a container that contains liquid contents and that has the ability to deform and recover elastically when pressed, and is characterized in that the stopper for a liquid container comprises a side wall that makes watertight contact with the inner wall of the opening of the container, a closing wall that closes the space enclosed by the side wall, a pouring hole that opens on the upper surface of the closing wall, a groove formed on the outer peripheral surface of the side wall, and an internal passage in the closing wall that connects the groove with the pouring hole, and the groove communicates with the interior of the container, extends circumferentially around the side wall, and is formed in a serpentine shape in the vertical direction.

[0009] With this type of stopper for a liquid container, the serpentine groove along the circumferential direction of the side wall creates a long and complex liquid flow path, suppressing natural outflow of the liquid. This prevents the contents from flowing out of the spout under its own weight simply by turning the container upside down. Furthermore, when the user presses the container, the container deforms, causing the contents to be reliably dispensed through the internal passage of the stopper for a liquid container, improving pouring control and reducing dripping and splashing.

[0010] The present invention is characterized in that the inside plug for the liquid container is formed by integral molding.

[0011] The plug for a liquid container constructed in this way can be manufactured by one-piece molding, which reduces the number of parts and manufacturing costs, while also preventing leaks during assembly and improving dimensional accuracy. Furthermore, one-piece molding allows for precise shape control of the grooves and internal passages, optimizing the flow of liquid and ensuring stable pouring performance. [Effects of the Invention]

[0012] According to this device, the groove of the liquid container stopper is designed to snake up and down along the circumferential direction of the sidewall, effectively preventing the liquid from spontaneously spilling out. This prevents the contents from leaking even with low-viscosity liquids by simply turning the container upside down, improving safety and convenience during use. Furthermore, when pressed, the stopper's internal passage ensures reliable and appropriate liquid dispensing, preventing dripping and splashing. Additionally, the ability to manufacture the stopper through one-piece molding offers the excellent benefits of reduced manufacturing costs and consistent quality. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a vertical cross-sectional view showing a state in which the inside plug for a liquid container according to the present invention is attached to the container. [Figure 2] 1A is a front view, FIG. 1B is a right side view, FIG. 1C is a left side view, and FIG. 1D is a rear view of the inside plug for a liquid container according to the present invention. [Figure 3] 1 is a development view of a groove formed on the outer peripheral surface of the side wall of the inside plug for a liquid container according to the present invention. [Figure 4] 4 is a development view showing a modified embodiment of the groove shown in FIG. 3. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a longitudinal cross-sectional view showing a state in which a stopper 100 for a liquid container according to the present invention is attached to a container 200, with a portion of the container 200 omitted. Fig. 2 is an external view of the stopper 100 for a liquid container according to the present invention, with (A) a front view, (B) a right side view, (C) a left side view, and (D) a rear view. As shown in Figs. 1 and 2, the stopper 100 for a liquid container according to the present invention (hereinafter referred to as the stopper 100) is attached to an opening 201 of a container 200 containing liquid contents L. The container 200 has a body 202 that is deformable and elastically recoverable, and is a squeeze container that can be pressed by hand by a user.

[0015] As shown in FIG. 1 , the inside stopper 100 includes a cylindrical side wall 10 that is in watertight contact with the inner wall of the opening of the container 200, and a blocking wall 20 that closes the space S enclosed by the side wall 10. An outlet hole 30 through which the contents L pass is opened in the upper surface 20a of the blocking wall 20, and the contents L are discharged to the outside from the outlet hole 30 during use. A flange 60 is provided on the outer periphery of the upper part of the inside stopper 100, and this flange 60 abuts against the upper end 201a of the opening of the container 200, thereby reliably holding the inside stopper 100 in a predetermined position. Furthermore, a rib 70 is provided on the outer periphery of the side wall 10, and this rib 70 bites into and engages with the inner wall of the opening of the container 200, thereby forming a retaining structure for the inside stopper 100 and preventing the inside stopper 100 from falling off during use.

[0016] A groove 40 is formed on the outer peripheral surface 10a of the side wall 10 of the inside plug 100, extending circumferentially along the side wall 10 and meandering in the vertical direction. This groove 40 communicates with the interior 200a of the container 200 and constitutes part of a path for the contents L to be poured out via the inside plug 100 to the outside. The groove 40 and the pouring hole 30 are communicated with each other by an internal passage 50 formed in the blocking wall 20, which extends inward from the groove 40 formed on the outer peripheral side of the side wall 10, penetrating the blocking wall 20 and reaching below the pouring hole 30. As a result, the contents L inside the container are guided from the groove 40 through the internal passage 50 to the pouring hole 30 and poured out to the outside.

[0017] Figure 3 is a development view of groove 40 formed on the outer peripheral surface of the side wall of inside plug 100 for liquid containers according to the present invention. As shown in Figure 3, the path of groove 40 can be broadly divided into four portions: starting portion 40a (shown in Figure 2(D)) that communicates with the inside of the container, rising portion 40b (shown in Figure 2(D)) that rises linearly to near the center of the height of side wall 10, circumferential portion 40c (shown in Figures 2(A)(B)(C)(D) (no reference numeral)) that runs from the upper end of groove 40a around the circumferential direction of side wall 10, and terminal portion 40d (shown in Figure 2(B)) that communicates with internal passage 50. As shown in FIG. 3, at the circumferential portion 40c, between the linear grooves extending toward the start and end, there is provided a meandering portion 40e (a portion that appears in all of FIGS. 2(A)(B)(C)(D) (no reference numeral)) that meanders multiple times in the vertical direction as the groove 40, thereby extending the overall length of the groove 40 and complicating the fluid passageway.

[0018] In this way, by providing groove 40 with vertically meandering portion 40e, the fluid resistance increases due to the longer and more complicated fluid passage, even for low-viscosity liquids that a simple linear groove cannot handle. This reliably prevents the contents L from naturally flowing out when container 200 is simply turned upside down, and makes it possible to reliably dispense the contents L only when the user presses container 200.

[0019] FIG. 4 is a development view showing a modified embodiment of the groove shown in FIG. 3 . As an example of the shape of the groove meandering in the vertical direction, as shown in FIG. 4 , the meandering portion 40e of the groove 40 can be configured as a crank-shaped meandering portion. In addition, for other meandering shapes in the vertical direction, the strength of the fluid resistance can be adjusted by changing the size and number of meanders. In this embodiment, the circumferential portion 40c is provided over approximately three-quarters of the circumference of the sidewall 10, but the circumferential portion 40c may be any length, such as one-half of the circumference of the sidewall 10. For example, even if the circumferential portion 40c is short, the fluid resistance can be increased by increasing the size and number of meanders at the meandering portion 40e of the circumferential portion 40c of the groove 40.

[0020] As described above, according to this embodiment, it is possible to more reliably prevent the contents from flowing out naturally without being pressed. Furthermore, since the inside plug 100 is formed by one-piece molding, the number of parts is small, making it easy to manufacture, and it also has excellent sealing properties and dimensional accuracy. [Explanation of symbols]

[0021] 10 side wall 10a Outer surface 20 Blocking Wall 20a top surface 30 Pour hole 40 grooves Starting point of 40a 40b Ascending section 40c Circumferential section 40d End point 40e Meandering section 50 Internal passage 60 Tsuba 70 Ribs 100 Inner stoppers for liquid containers (inner stoppers) 200 containers 200a internal 201 Opening 201a upper edge 202 Torso L Contents S space

Claims

1. An inside plug for a liquid container that is attached to the opening of a container that contains liquid contents and has deformation and elastic recovery properties when pressed, The inside plug for the liquid container is a side wall that is in watertight contact with the inner wall of the opening of the container; a closing wall that closes the space surrounded by the side wall; a pouring hole opening on an upper surface of the closing wall; a groove formed on the outer peripheral surface of the side wall; an internal passage provided in the blocking wall, the internal passage communicating with the groove and the pouring hole; Equipped with The inside plug for a liquid container is characterized in that the groove communicates with the inside of the container, extends along the circumferential direction of the side wall, and is formed in a meandering shape in the vertical direction.

2. 2. The liquid container plug according to claim 1, wherein the liquid container plug is formed by integral molding.

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