JP6589158B1 - Air bagless structure - Google Patents

Abstract

An air-backless structure that can reliably prevent backflow of air with an extremely simple structure, can be easily provided, and can be provided at low cost. A fixed cylinder body to be fitted and mounted inside a head is provided. A valve body 3 is provided in which a valve plate 2 is provided on the shaft core portion of the fixed cylinder 1. A projecting port 13 that projects in the direction of the valve plate 2 is formed in the opening 11. The height of the fixed cylinder 1 is formed to be twice the height of the protruding port 13. The valve plate 2 is formed at a position that bisects the height of the fixed cylinder 1. [Selection] Figure 3

Description

  The present invention relates to an air bagless structure that can prevent air from flowing back into a tube container after the contents are extruded from the tube container.

  Patent Document 1 discloses a valve mechanism that can arbitrarily change the flow rate of contents. This valve mechanism uses a valve member with a substantially elliptical cross section at the center of a ring-shaped support, and the flow rate of fluid can be changed arbitrarily by bringing the closure into contact with the opening of the container. It is the structure to do.

  On the other hand, Patent Document 2 discloses a content outflow prevention valve for preventing the backflow of air into the tube container in order to maintain the quality of cosmetics and the like stored in the tube container.

  This valve is a valve configured by combining two members, a fixed valve and a valve body, and is configured to prevent the backflow of air by mounting the combined valve on the discharge port of the tube container. .

  In other words, this valve is configured by combining a disc-like valve body inside a substantially cylindrical fixed valve and mounting this valve on the discharge port side of the tube container.

JP 2004-83013 A JP 2016-84180 A

  The valve mechanism described in Patent Document 1 can close the fluid and change the flow rate of the fluid, but cannot prevent air from flowing backward into the tube container after the contents are extruded. It is.

  That is, since the positions of the opening and the valve member are extremely close, if any residue remains between the opening and the valve member, there is a possibility that a gap is generated at the closing portion of the valve member. There was a risk that air would flow back into the container from this gap. Therefore, this valve mechanism of Patent Document 1 has a structure that cannot change the flow of air into the tube container even though the flow rate can be changed.

  On the other hand, the valve of Patent Document 2 is configured to prevent the backflow of air into the tube container by combining two members, a substantially cylindrical fixed valve and a disk-shaped valve body.

  However, since this valve combines two members, the configuration of each member has become extremely complicated. That is, one substantially cylindrical fixed valve has a support step projecting from the bottom of the fixed valve to support a disk-shaped valve body mounted therein from below. Furthermore, the bottom of the other disc-shaped valve body supported by the support step is formed with a meshing groove that meshes with the support step, and the upper end of the support step is meshed and combined with the meshing groove. ing. As a result, in order to combine two members, the structure of each part must be a very complicated structure, and the manufacturing cost as a valve | bulb also became high.

  Moreover, since the support step is a structure that supports the disc-shaped valve body from below, if the valve is installed with the top and bottom surfaces of the valve in the reverse direction, the support step and the bottom surface of the bubble body are reversed. There is an inconvenience that the contents cannot be discharged. Therefore, the mounting of the valve requires a lot of labor and attention for the mounting operation of the valve, such as the operation of combining two members and the mounting of the valve while paying sufficient attention to the direction of the valve.

  Therefore, the present invention has been devised to solve the above-described problems, and can prevent the backflow of air with a very simple structure, and the valve mounting operation becomes extremely easy and inexpensive. The object is to provide an air bagless structure that can be provided.

In order to achieve the above-mentioned object, the first means in the present invention includes a fixed cylinder 1 fitted and mounted in the head 12 provided at the tip of the tube container 10, and an axial core portion of the fixed cylinder 1. An air bagless structure including a valve body 3 formed by a valve plate 2 that is provided and seals the opening 11 formed in the head 12 so as to be openable and closable, the valve plate 2 being 0.2 mm to 0.8 mm. a disc-shaped sealing piece 2A and a plurality of elastic arm pieces 2B curved so as to surround the periphery of the sealing piece 2A, and a gap between the sealing piece 2A and the elastic arm piece 2B; A structure is formed so that the contents are discharged from the gap between the elastic arm piece 2B and the fixed cylinder 1, and a projecting port 13 protruding in the direction of the valve plate 2 is formed in the opening 11. While the height is formed to be twice as high as the protrusion 13 protrudes The valve plate 2 is formed at a position that bisects the height of the fixed cylinder 1.

The fixed cylinder 1 of the second means is configured to be fixed at the lower end portion of the extraction port body 14 fitted into the tip of the head 13 of the tube container 10.

  As described in claim 1 of the present invention, the opening 11 is formed with a protruding port 13 protruding in the direction of the valve plate 2, and the height of the fixed cylinder 1 is twice the height of the protruding port 13 protruding. By forming it at a height, the possibility of the contents discharged from the opening 11 collecting around the protruding port 13 was solved. As a result, even if the contents in the tube container 10 are repeatedly pushed out, there is no possibility that the contents accumulated around the projecting port 13 interfere with the sealed state of the valve plate 2, and the backflow of air is prevented with a very simple configuration. Succeeded.

  In addition, since the valve plate 2 is formed at a position that bisects the height of the fixed cylinder 1, the valve plate 2 is pressed against the tip of the protruding port 13 even if the orientation of the valve body 3 is reversed. It can be surely sealed. Therefore, when mounting the valve body 3 inside the head 12, it is not necessary to combine two members or pay attention to the direction of the valve body 3, and there is an advantage that the valve mounting operation can be performed very easily.

  By forming the thickness of the valve plate 2 of the valve body 3 from 0.2 mm to 0.8 mm, the valve plate 2 comes into close contact with the tip of the projecting port 13, and the backflow of outside air can be reliably prevented.

  Since the valve plate 2 is configured to discharge the contents from the gap between the sealing piece 2A and the sealing piece 2A and the gap between the sealing piece 2A and the fixed cylindrical body 1, it is pressure-bonded to the tip of the protruding port 13. The contents are discharged from the periphery of the valve plate 2, and the structure is such that no residue is easily generated between the protruding port 13 and the valve plate 2.

According to the second aspect of the present invention, the fixed cylinder 1 is configured to be fixed at the lower end portion of the extraction port body 14 that fits inside the tip of the head 13 of the tube container 10. The configuration is suitable for a typical nozzle structure.

  As described above, according to the present invention, it is possible to reliably prevent the backflow of air with an extremely simple structure, and it becomes very easy to perform the operation when the valve is mounted, and furthermore, it is possible to provide an inexpensive supply. The initial objectives such as were achieved.

It is a disassembled perspective view which shows one Example of this invention. It is an exploded vertical sectional view showing an example of the present invention. It is an expanded vertical sectional view which shows the principal part of this invention. It is a top view which shows the valve body of this invention. It is a plane sectional view showing a valve board of the present invention. It is a longitudinal cross-sectional view which shows the valve body of this invention.

  The present invention is an air bagless structure in which the valve body 3 is attached to the tip of the tube container 10 to prevent backflow of outside air. The tube container 10 has a head 12 formed on the distal end side, and an extraction port body 14 and a cap are attached to the head 12 (see FIG. 1). Moreover, the opening part 11 which discharges | emits the stored thing in the tube container 10 is formed in the inside of this head 12 (refer FIG. 2).

  The valve body 3 is a member formed of a synthetic resin material, and includes a fixed cylinder 1 and a valve plate 2 (see FIG. 4). The fixed cylinder 1 is a part that is fitted and mounted inside a head 12 provided at the tip of the tube container 10. The illustrated fixed cylinder 1 has a cylindrical shape and is fitted into the head 12 in close contact (see FIG. 3). A projecting port 13 projects from the opening 11 inside the head 12, and the fixed cylinder 1 is installed at a position surrounding the projecting port 13.

  The height of the fixed cylinder 1 is formed to be twice as high as the height from which the protrusion 13 protrudes. Then, the valve plate 2 is formed at a position that bisects the height of the fixed cylinder 1 (see FIG. 3). The illustrated fixed cylinder 1 is configured such that the bottom of the extraction port 14 fitted inside the tip of the head 13 of the tube container 10 is in contact with the upper end of the fixed cylinder 1 to fix the fixed cylinder 1. Yes. When the fixed cylindrical body 1 is fixed around the protruding port 13, the height position from the lower end portion to the upper end portion of the fixed cylindrical body 1 is twice the protruding height of the opening portion 11. become.

  On the other hand, the valve plate 2 is a thin plate-like portion provided in the shaft core portion of the fixed cylinder 1 and is formed so as to press-contact the opening 11 formed in the head 12 so as to be freely opened and closed. In the valve body 3, a fixed cylinder 1 and a valve plate 2 are integrally formed of a synthetic resin material (see FIG. 4).

  The illustrated valve plate 2 comprises a sealing piece 2A and an elastic arm piece 2B (see FIG. 5). The sealing piece 2 </ b> A is a disk-shaped member that is in pressure contact with the tip of the protruding port 13. On the other hand, the elastic arm piece 2B is a member curved so as to surround the periphery of the sealing piece 2A, and the sealing piece 2A is supported by a plurality of elastic arm pieces 2B. And it is comprised so that the content may be discharged | emitted from the clearance gap between 2 A of sealing pieces and the elastic arm piece 2B, and the clearance gap between the elastic arm piece 2B and the fixed cylinder 1 (refer FIG. 6).

  As described above, the height of the fixed cylindrical body 1 is twice the height of the protruding port 13, and the valve plate 2 is formed at a position that bisects the height of the fixed cylindrical body 1. The central portion of the thickness of the valve plate 2 coincides with the position of the tip portion of the protrusion 13. Therefore, the sealing piece 2A comes into pressure contact with the tip of the protruding port 13 by the elastic force of the elastic arm piece 2B (see FIG. 3). In addition, since the central portion of the thickness of the sealing piece 2A coincides with the position of the tip end portion of the protruding opening 13, even if the upper and lower surfaces of the elastic arm piece 2B are turned upside down, the lower surface of the elastic arm piece 2B always stays at the protruding opening 13. It is configured to be in pressure contact with the tip.

  Thus, since the opening part of the protrusion port 13 is sealed using the elastic force of the valve plate 2, the thickness setting of the valve plate 2 becomes important. In the experiment, when a polyethylene resin was used and the thickness of the valve plate 2 was formed in the range of 0.2 mm to 0.8 mm, a stable sealing force was obtained.

  That is, when the thickness of the valve plate 2 is less than 0.2 mm, the elastic force is inferior and the pressure contact state with the protruding port 13 cannot be maintained. On the other hand, when the thickness of the valve plate 2 exceeds 0.8 mm, the pressure-bonding force becomes too strong, causing troubles when discharging the contents. As a result, the setting range of the thickness of the valve plate 2 is preferably 0.2 mm to 0.8 mm.

  In the experiment, the height of the projecting port 13 is 1.0 mm, the height of the fixed cylinder 1 is 2.0 mm, and the thickness of the valve plate 2 is 0.5 mm.

  In the present invention, the configuration is not limited to the illustrated configuration, and the configuration, size, shape, and the like of the fixed cylinder 1 and the valve plate 2 can be freely changed without changing the gist of the present invention. .

DESCRIPTION OF SYMBOLS 1 Fixed cylinder 2 Valve plate 2A Sealing piece 2B Elastic arm piece 3 Valve body 10 Tube container 11 Opening part 12 Head 13 Protrusion port 14 Extraction port body

Claims (2)

A fixed cylinder that fits and attaches to the inside of the head provided at the tip of the tube container, and a valve plate that is provided at the axial core portion of the fixed cylinder and seals an opening formed in the head so as to be openable and closable. An air bagless structure with a valve body composed of
The valve plate is formed with a thickness of 0.2 mm to 0.8 mm, and includes a disc-shaped sealing piece and a plurality of elastic arm pieces curved so as to surround the sealing piece, and the sealing piece and the elastic arm piece; Configured to discharge the contents from the gap and the gap between the elastic arm piece and the fixed cylinder ,
A projecting port projecting in the valve plate direction is formed in the opening, and the height of the fixed cylinder is formed to be twice the height of the projecting port projecting. An air bagless structure characterized in that the valve plate is formed at a position that bisects the height.   The air bagless structure according to claim 1, wherein the fixed cylindrical body is configured to be fixed at a lower end portion of an extraction port body that fits inside the tip end of the head of the tube container.

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