JP3574005B2 - Container with lid - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a container with a lid, such as a water bottle and a thermos bottle.
[0002]
[Prior art]
When the lid is detachably attached to the mouth of the container body by screw connection, a click feeling is given to the hand of the person who operates the lid at the end of the screw tightening operation so that it can be sensed that the lid is securely closed. This has been done conventionally.
[0003]
As a configuration for giving such a click feeling, a click projection is provided at the end of the screw connection of the mouth side thread of the container body, and a click recess is formed at the start end of the lid side thread formed on the inner peripheral surface of the cup also serving as a cup. At the end of the screw tightening operation of the lid, the above-mentioned click projection and click recess are fitted to generate a required amount of click torque.
[0004]
In order to generate the required amount of click torque as described above, the diameters of the mouth-side screw and the cover-side screw are set to have relatively high precision, and the fitting of both screws is performed. Is a relatively tight fit with little room in the radial direction.
[0005]
[Problems to be solved by the invention]
In the case of a container with a lid as described above, if the outside diameter of the screw on the mouth side becomes larger than the design value due to variations in dimensions during production, changes over time, use conditions, etc. The thread may approach or interfere with the bottom of the thread groove on the lid side. If the inner diameter of the screw on the lid side is smaller than the designed value, the screw on the lid side may approach or interfere with the bottom of the screw groove on the mouth side.
[0006]
In any of the above cases, the margin of deformation of the lid at the time of the click fitting is small or zero, so that the click torque becomes extremely large, which causes difficulty in the operation of closing the lid.
[0007]
Therefore, an object of the present invention is to enable the lid to be deformed at the time of click fitting even when the diameter of the screw may deviate from the design value, so that a click torque of a required size can be obtained. And
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention provides a lid which is detachably attached to a mouth of a container body by screw connection, and a mouth-side screw formed on an outer peripheral surface of the mouth and an inner peripheral surface of the lid. In a container with a lid provided with a click portion that is fitted to each other at the terminal end of the screw connection of the formed lid-side screw, in one or both of the mouth-side screw and the lid-side screw, At least three protrusions per circumference were provided on the outer peripheral surface of the screw thread, and the virtual radius formed by each protrusion was set to a size that guarantees the click torque at the above-mentioned click portion.
[0009]
In addition, it is possible to adopt a configuration in which a steal portion that allows the deformation of the lid is provided on the peripheral surface of the thread between the convex portions.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. As shown in FIGS. 1 and 2, the container with a lid according to the embodiment is provided with a mouth-side thread 5 from the start end 3 to the end 4 within one turn on the outer peripheral surface of the mouth 2 of the container body 1. A lid-side thread 7 is provided on the inner peripheral surface of the cup-shaped lid 6 that covers the mouth 2. A screw end interval A of a predetermined size is formed between the start end 8 of the lid side screw 7 and the end portion 9 located within one turn from the start end 8. Further, the intermediate portion of the cover-side screw 7 is notched, and a predetermined distance is provided between the start-side intermediate end 11 continuous with the start 8 of the cover-side screw 7 and the terminal-side intermediate end 12 continuous with the end 9. An intermediate interval B having a size of
[0011]
The above screw end interval A and the intermediate interval B are provided at a position of about 90 degrees on both sides of the handle 13, and when the user grips the handle 13 and drinks the beverage with the lid 6, the lips touch the lid side thread 7. This also prevents the liquid from running out of the beverage.
[0012]
The above-mentioned lid 6 is screwed by engaging the starting end 8 of the lid-side screw 7 with the lower surface of the starting end 3 of the mouth-side screw 5 and rotating it by approximately 270 degrees. At the end of the screwing, The click concave portion 14 provided near the starting end 8 of the cover side screw thread 7 fits into the click convex portion 15 provided at the end portion of the mouth side screw thread 5 to give a click feeling.
[0013]
On the outer peripheral surface near the opening end of the mouth 2, a screw 16 for tightening the inner plug screw is provided. A restricting projection 17 is provided in the vicinity of the start end 3 of the mouth-side thread 5. The restricting projection 17 abuts on the lower surface of the start-side intermediate end 11 of the lid-side screw 7 to prevent the start-end 3 of the mouth-side screw 5 from entering the intermediate interval B, so-called “oblique insertion”. To prevent.
[0014]
3 (a) to 3 (c) show a state where the click recess 14 is click-fitted to the click projection 15 as shown in FIG. 3 (b). A required click torque is generated when the click protrusion 15 comes into contact with the screw protrusion 18 between the start end 8 of the switch 7 and the click recess 14.
[0015]
If the lid side screw thread 7 and the mouth side screw thread 5 are fitted roughly and the gap in the radial direction is large, a click torque of a required magnitude may not be obtained. Further, if the fitting is too tight, the click torque is too large when there is dimensional variation or the like, which may hinder the lid closing operation.
[0016]
FIGS. 4A to 4C show one means for solving such a problem. That is, in this case, four protrusions 19 are provided at equal intervals on the mouth-side screw thread 5 at one circumference, and a general screw portion 21 is provided between the protrusions 19. The outer diameter L of the virtual circle connecting the protruding portions 19 is set to a size that ensures a required click torque. The outer diameter L 'of the general screw portion 21 is set smaller than this, and a gap d exists between the general screw portion 21 and the screw groove bottom 22 on the lid side (see FIG. 4C). It can also be said that the portion having the outer diameter L ′ is the stealing portion 24 which is recessed by the size of d from the portion of the convex portion 19 having the outer diameter L.
[0017]
Note that a predetermined gap e exists between the lid side thread 7 and the mouth side thread groove bottom 23 over the entire circumference, and the inner diameter of the lid side thread 7 is not limited even if there is dimensional variation. 23 is set to a size that does not cause interference.
[0018]
5 (a) to 5 (c) show other means. In this case, the cover side thread 7 is provided with one round at equal intervals except for the screw end interval A and the intermediate interval B described above. Four convex portions 19 'are provided inward, and a general screw portion 21' is provided between the convex portions 19 '.
[0019]
The inner diameter N of the imaginary circle connecting the protruding portions 19 'is set to a size that ensures a required click torque. The inner diameter N ′ of the general screw portion 21 ′ is set to be larger than this, and a gap d ′ exists between the general screw portion 21 ′ and the mouth-side screw groove bottom 23 ′ (see FIG. 5C). It can also be said that this part of the inner diameter N 'is a stealing part 24' recessed from the part of the convex part 19 'of the inner diameter N by d'.
[0020]
In addition, even if there is a predetermined gap e ′ between the mouth side screw thread 5 and the screw groove bottom 22 ′ on the lid side over the entire circumference, and there is a variation in the outer diameter of the mouth side screw thread 5 or the like. The size is set so as not to interfere with the thread groove bottom 22 '.
[0021]
In each of FIGS. 4 and 5 described above, the presence of the projections 19 and 19 ′ ensures the fitting accuracy of the lid 6 to the mouth portion 2. Is obtained. Further, even if these projections 19, 19 'become larger than the design values due to the influence of dimensional variations, the lid 6 is deformed at the gaps d, d' in the stealing parts 24, 24 'at the time of click fitting. The click torque can be prevented from becoming excessive.
[0022]
In each of the above embodiments, an example is shown in which the projections 19 and 19 'are provided at four locations on one circumference, but a configuration in which the projections are provided at at least three locations can be adopted.
[0023]
The same effect can be obtained by combining the above-described FIGS. 4 and 5 with a configuration in which the convex portion 19 is provided on the mouth-side screw 5 and the convex portion 19 'is provided on the lid-side screw 7 at the same time. .
[0024]
【The invention's effect】
As described above, according to the present invention, at least three convex portions per circumference are provided on one or both of the mouth-side screw and the lid-side screw on the outer peripheral surface of the screw, and each convex portion forms By setting the radius to the size that guarantees the click torque at the above-mentioned click part, a click torque of a predetermined size can be obtained at the time of click fitting, and the lid can be deformed even if there is dimensional variation etc. Therefore, it is possible to prevent the click torque from becoming excessive, and to perform a smooth lid fastening operation.
[Brief description of the drawings]
1 is a partially omitted exploded perspective view of the embodiment; FIG. 2 is a front view of a mouth portion of the embodiment; FIG. 3 is a cross-sectional view showing a click fitting portion; FIG. Sectional view of the fitting portion of the lid (b) Enlarged sectional view taken along line bb in FIG. (A) (c) (a) Enlarged sectional view taken along line cc in FIG. (B) (a) is an enlarged cross-sectional view taken along line bb in FIG. (A), (c) is an enlarged cross-sectional view taken along line cc in FIG.
DESCRIPTION OF SYMBOLS 1 Container main body 2 Mouth 3 Start end 4 Termination 5 Mouth side thread 6 Lid 7 Cover side thread 8 Start end 9 Termination 11 Start end middle end 12 Termination middle end 13 Handle 14 Click recess 15 Click protrusion 16 Screw Article 17 Regulation convex part 18 Screw convex part 19, 19 'Convex part 21, 21' General screw part 22, 22 'Screw groove bottom 23, 23' Screw groove bottom 24, 24 'Stealing part

Claims (2)

A lid is detachably attached to the mouth of the container body by screw connection, and the terminal end of the screw connection between the mouth-side screw formed on the outer peripheral surface of the mouth and the cover-side screw formed on the inner peripheral surface of the cover. In a container with a lid provided with a click portion to be fitted with each other, at least three convex portions per circumference are provided on one or both of the mouth-side screw and the cover-side screw. A container with a lid provided on an outer peripheral surface, wherein a virtual radius formed by each convex portion is set to a size that guarantees a click torque at the click portion. The container with a lid according to claim 1, wherein a steal portion that allows deformation of the lid is provided on an outer peripheral surface of the thread between the protrusions.

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