JP4888893B2 - Container cap mounting structure - Google Patents

Description

  The present invention relates to a structure for attaching a cap to be fitted to a mouth / neck portion of a container.

  A container in which the contents of a container body are discharged from the mouth and neck of the container body into which the cap can be fitted by squeezing the trunk is well known.

  However, since the diameter of the neck portion of the container body is relatively large, the contents of the container body are likely to be discharged more than the amount used, and for this reason, a discharge port is provided on the upper surface of the inner plug fitted to the neck portion of the container body mouth. Containers are known that can be formed so that an appropriate amount can be removed.

  This will be described with reference to FIGS. Reference numeral 100 denotes a body portion of the container body. An external thread is formed on the outer surface of the mouth and neck portion 101 standing from the body portion of the container body, and at the center portion of the upper surface 103 of the cylindrical inner plug 102 fitted to the mouth and neck portion. A discharge port 104 having a shape is formed, and the contents of the container body are discharged from the discharge port by pressing the body part.

  However, the container contents are normally discharged to the palm or the like. However, as shown in FIG. 10, a small amount of the container contents adheres to the upper surface 103 of the inner plug, and a reservoir 105 of contents is formed on the upper surface of the inner plug. is there. In this state, as shown in FIG. 11, when the cap 106 is screwed into the mouth and neck, and the screw is screwed in, the contents accumulated on the inner plug are thinly extended by the cap top wall 107 as shown in FIG. In other words, the cap penetrates into the female screw 108 of the cap and adheres to the inside of the cap.

  The present invention has been made in view of the above problems, and by providing a leakage prevention means capable of preventing leakage of the contents accumulated on the upper surface of the inner plug between the cap and the inner plug, dirt inside the cap can be removed. An object of the present invention is to provide a container cap mounting structure that can be prevented.

The present invention forms a container body discharge port 15 on the top surface of a cylindrical inner plug 10 fitted to the container body neck 4 , and the container body neck through the cylindrical inner plug 10. In the container cap mounting structure in which the cap 20 is screwed onto the outer surface,
The inner plug peripheral wall lower part 12 is fitted to the outer surface of the container body neck portion 4 so that the outer diameter of the inner plug peripheral wall 13 portion above the mouth neck portion is smaller than the outer diameter of the container body neck portion 4. In addition, the outer diameter of the upper part of the cap peripheral wall 21 is formed in a small outer diameter part 25 smaller than the lower part , and the inner surface of the small outer diameter part 25 is connected to the mouth and neck by screwing the cap 20 by a predetermined amount. Formed so that it can be liquid- tightly fitted to the outer surface of the inner peripheral wall 13 of the upper part of the upper part, and formed so as to prevent the discharged container body contents remaining on the upper surface 14 of the inner part from leaking into the cap.
When the cap 20 is screwed in a predetermined amount or more, the cap top wall 22 comes close to the inner plug upper surface 14 so that the container contents remaining on the upper surface of the inner plug can flow into the inner plug discharge port 15. It is characterized by that.

  The present invention prevents the contents of the discharged container body from remaining on the inner stopper from leaking into the cap by forming the cap so that the cap can be liquid-tightly fitted to the inner stopper when the cap is screwed in a predetermined amount. Since it was made possible, adhesion of the container contents to the inside of the cap is prevented.

  The present invention will be described below with reference to embodiments shown in the drawings.

  1 to 3 show a first embodiment of the present invention, in which 1 is a container body, and the mouth and neck portion 4 is erected from the upper end of the trunk portion 2 through the shoulder portion 3. The outer diameter of the upper end portion of the mouth / neck portion 4 is formed in a small outer diameter portion 5 smaller than the outer diameter of the lower portion thereof, and a male screw 6 is formed on the outer surface of the lower portion of the small outer diameter portion 5.

  Reference numeral 10 denotes a cylindrical inner plug, the lower end of the peripheral wall 11 is formed in an inner / outer double cylinder 12, and the annular gap between the inner and outer cylinders is uneven on the small outer diameter part 5 at the upper end of the container body neck 4. It is fitted via the engaging part. The upper peripheral wall portion 13 above the inner and outer double tubes 12 is raised from the inner surface of the upper end portion of the inner and outer double tubes 12, and the upper peripheral wall portion 13 has an outer surface tapered so that the lower portion gradually becomes thinner. Is formed.

  The reason why the outer surface of the upper peripheral wall portion 13 is formed in a taper shape as described above is to allow the cap inner surface to be hermetically fitted to the outer surface of the upper end portion of the upper peripheral wall portion 13, and therefore the taper. A protrusion may be provided on the outer surface of the upper end portion of the upper peripheral wall portion 13 without forming a shape. A discharge port 15 having an arbitrary shape is formed in the central portion of the upper wall 14 that closes the top surface of the upper peripheral wall portion 13.

  Reference numeral 20 denotes a cap. The upper surface of the peripheral wall 21 is closed by a top wall 22, and a female screw 23 that can be screwed into the male screw 6 of the container body neck 4 is formed on the lower inner surface of the peripheral wall 21.

  Next, the operation will be described.

  In order to discharge the container contents A from the container body 1, the cap 20 may be removed from the container body neck 4 and the body 2 may be squeezed. Then, most of the contents A are discharged from the discharge port 15. Then, although it is discharged to the palm or the like, as shown in FIG. 1, a part adheres around the discharge port 15 and remains on the inner plug upper wall 14.

  After discharging, when the cap 20 is screwed into the container body neck 4 and screwed in a predetermined amount, the upper inner surface of the cap is liquid-tightly fitted to the upper end of the upper peripheral wall 13 of the inner plug 10 as shown in FIG. Then, the outer periphery of the upper peripheral wall 13 is sealed.

  Further, when the cap 20 is screwed in, as shown in FIG. 3, the cap top wall 22 comes close to the upper wall 14 of the inner stopper, and the container body content A remaining around the discharge port 15 is extended slightly to discharge the discharge port 15. Let it flow in. At that time, since the outer periphery of the upper peripheral wall portion 13 of the inner plug is sealed by the cap 20, the content A is prevented from leaking into the cap 20. In addition, although there is no limitation in particular in the kind of content filled with a container body, this invention is especially effective with respect to what has a viscosity.

  4 to 6 show the second embodiment. The upper peripheral wall portion 13 of the inner plug 10 is tapered so that the lower portion is thin in the first embodiment. In the embodiment, the same thickness is formed over the entire length.

  Further, in the first embodiment, the peripheral wall 21 of the cap 20 has the same inner diameter over the entire length, but in the second embodiment, the inner diameter of the upper end portion of the cap 20 is formed in a small inner diameter portion 25 that is smaller than the inner diameter of the lower portion. The small inner diameter portion 25 can be fitted to the outer surface of the upper peripheral wall portion 13 of the inner plug. Since other configurations are the same as those of the first embodiment, the description thereof is omitted.

  Only the differences from the first embodiment will be described as to the action. After discharging the container contents A, the cap 20 is screwed into the container body neck and then screwed in a predetermined amount. As shown in FIG. The lower end inner surface of the small inner diameter portion 25 is liquid-tightly fitted to the upper end outer surface of the upper peripheral wall portion 13 of the inner plug, and the outer periphery of the upper peripheral wall portion 13 is sealed.

  Further, when the cap 20 is screwed in, as shown in FIG. 6, the cap top wall 22 comes close to the upper wall 14 of the inner stopper, and the container contents A remaining around the discharge port 15 are thinly extended to discharge the discharge port 15. Let it flow in. At that time, since the outer periphery of the upper peripheral wall portion 13 of the inner plug is sealed by the cap 20 as in the first embodiment, the content A is prevented from leaking into the cap 20.

  FIGS. 7 to 9 show a third embodiment. An inner plug 30 is formed by hanging an inner / outer double cylinder 32 from a peripheral portion of an upper wall 31 covering the upper surface of the container body neck 4 and An annular space of the tube is fitted to the upper end portion of the mouth / neck portion 4, and an engaging protrusion 34 is provided on the outer surface of the upper end portion of the outer tube 33 of the double tube 32. An arbitrary-shaped discharge port 35 is formed at the center of the upper wall 31.

  When the cap 20 is screwed in, the upper inner surface engages with the engaging protrusion 34 and the gap between the upper end of the inner plug 30 and the inner surface of the cap 20 is sealed. Does not leak into the threaded portion of the cap 20. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

FIG. 3 is a partially cutaway side view showing the first embodiment of the present invention and showing a state after discharging the container body contents. It is operation | movement explanatory drawing which shows the state which screwed the cap by predetermined amount to the container main body mouth neck part. It is action | operation explanatory drawing which shows the last screwed state of the cap to a container main body mouth neck part. The 2nd Embodiment of this invention is shown and it is a partially notched side view which shows the state after discharge of the container body content. It is operation | movement explanatory drawing which shows the state which screwed the cap by predetermined amount to the container main body mouth neck part. It is action | operation explanatory drawing which shows the last screwed state of the cap to a container main body mouth neck part. The 3rd Embodiment of this invention is shown and it is a semi-sectional view which shows the state after discharge of the container body content. It is operation | movement explanatory drawing which shows the state which screwed the cap by predetermined amount to the container main body mouth neck part. It is action | operation explanatory drawing which shows the last screwed state of the cap to a container main body mouth neck part. It is a partially cutaway side view showing a conventional example and showing a state after discharge of container contents. It is a schematic plan view showing a state where the container contents are attached around the outlet of the inner stopper. It is operation | movement explanatory drawing which shows the state which screwed the cap by predetermined amount to the container main body mouth neck part. It is action | operation explanatory drawing which shows the last screwed state of the cap to a container main body mouth neck part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container body 4 Neck part 5 Small outer diameter part 10 Inner plug 11 Perimeter wall 12 Inner / outer double cylinder 13 Upper peripheral wall part 14 Upper wall 15 Discharge port 20 Cap 21 Peripheral wall 22 Top wall 25 Small inner diameter part

Claims (1)

A discharge port (15) for the contents of the container body is formed on the upper surface of the cylindrical inner plug (10) fitted to the container body neck (4), and the container is inserted through the cylindrical inner plug (10). In the cap mounting structure of the container in which the cap (20) is screwed onto the outer surface of the body neck,
The lower part (12) of the inner plug peripheral wall is fitted to the outer surface of the container neck and neck (4), and the outer diameter of the inner plug peripheral wall (13) above the mouth and neck is set to the container neck and neck ( The outer diameter of the cap peripheral wall (21) is made smaller than the outer diameter of 4), and the outer diameter of the cap (20) is smaller than that of the lower part. The inner surface of the small outer diameter portion (25) is formed so as to be liquid- tightly fitted to the outer surface of the inner plug peripheral wall (13) above the mouth-neck portion , and the discharge remaining on the upper surface of the inner plug (14). Formed to prevent the later container contents from leaking into the cap,
When the cap (20) is screwed in by a predetermined amount or more, the cap top wall (22) comes close to the inner stopper upper surface (14) , so that the contents of the container remaining on the upper surface of the inner stopper are discharged from the inner stopper discharge port (15 ) A container cap mounting structure characterized by being provided so as to be able to flow into.

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