JP2008137694A - Cap fitting structure of container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cap fitting structure of a container capable of preventing any unauthorized unsealing. <P>SOLUTION: In the cap fitting structure of the container for fitting a cap body 30 to an outer surface of a fitting cylinder 10 fitted to an outer surface of a mouth neck part 4 of a container body, the cap body 30 is vertically divided into two of an upper cylindrical part 31 and a lower cylindrical part 32. A pair of these cylindrical parts are connected to each other by a breakable virgin seal 33 for preventing any unauthorized unsealing. A punching bar 36 is hanged from a top wall 35 of the cap body, an upper surface of the fitting cylinder 10 is closed by an upper wall 18, a breaking line 19 is formed around the center of the upper wall, and an upper wall portion surrounded by the breaking line is formed into a punch-removing plate part 20. After removing the virgin seal, the cap body is screwed in, the punching bar 36 is formed punchably the removal plate part 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to an attachment structure for a cap attached to a mouth and neck portion of a container body.

In this type of container, a break line is provided around the center of the upper wall that closes the upper surface of the fitting cylinder, and an upper wall portion surrounded by the break line is formed in the punched portion, and the top wall of the cap There is a hanging punch for punching the punching part. In addition, there is a cap mounting structure in which a fitting cylinder is fitted to the outer surface of the mouth and neck of the container, and the cap is screwed into the fitting cylinder.

  In the above conventional example, in the case where the punching part is provided in the fitting cylinder and the punching bar is provided in the cap, the punching bar is lowered by simply screwing the cap so that the punching part is punched. Unauthorized opening at the time could not be prevented.

    In addition, a cap screwing fitting cylinder to be fitted to the outer surface of the mouth and neck of the container is usually formed with a female screw that can be screwed into a male screw on the upper part of the mouth and neck on the inner surface of the cap, and the lower part is a mouth and neck. It is formed in a cylindrical part that can be fitted to the outer surface of the lower part of the part, and when the female screw of the fitting cylinder is screwed into the male screw of the mouth and neck part, the lower part of the fitting cylinder is fitted to the lower part of the mouth and neck part. However, since the fitting cylinder is formed of a material that is difficult to expand, the fitting to the lower part of the neck and neck at the lower part of the fitting cylinder does not work smoothly. A part of the lower part of the fitting cylinder is made thin. However, the lower inner surface of the fitting cylinder is provided with a non-rotating projection that can be fitted into the recess formed in the neck of the mouth and neck in order to prevent rotation when the cap is screwed. There was a problem that even if the part was provided, the spreading effect was reduced.

    Further, since a gap is formed between the lower end of the cap and the upper surface of the shoulder portion of the container, the water that has entered from this gap has a gap between the fitting tube and the mouth and neck, and the upper wall of the fitting tube and the mouth and neck. Since there is a possibility of entering the container through a gap with the upper end, and an interval is formed between the cap and the shoulder of the container, it is not preferable in appearance.

  A main object of the present invention is to provide a cap mounting structure for a container that can prevent unauthorized opening.

  Another object of the present invention is to provide a container cap mounting structure in which a fitting cylinder can be easily fitted to a container body.

  Still another object of the present invention is to provide a container cap mounting structure that can prevent water from entering the container body and that does not generate a gap between the cap body and the container body.

The present invention is a container cap mounting structure in which the cap body 30 is fitted to the outer surface of the fitting cylinder 10 fitted to the outer surface of the container body neck portion 4.
The cap body 30 is divided into upper and lower parts and formed into an upper cylinder part 31 and a lower cylinder part 32, and the pair of cylinder parts are connected by a virgin seal 33 for preventing breakage without permission. A punching rod 36 is suspended from the top wall 35 of the main body,
The upper surface of the fitting cylinder 10 is closed by the upper wall 18, and a breaking line 19 is provided around the center of the upper wall, so that the upper wall portion surrounded by the breaking line is formed into a removable plate portion 20 that can be punched. And
The cap body is screwed after the virgin seal is removed, so that the punching bar 36 is formed so that the removal plate portion 20 can be punched.

In addition, the present invention forms the threaded portion 5 on the upper outer surface of the container body neck portion 4, and provides the engaging recess 6 on the outer surface in the middle in the vertical direction of the container body neck portion.
A split groove 12 is vertically provided in the middle portion of the fitting cylinder 10 in the vertical direction, and an engaging piece 13 that is elastically deformable radially inward from the lower surface of the split groove is erected, and the cap body is attached to the engaging piece. 30 is provided with an engagement surface 14 that can be engaged,
The engagement piece 13 is provided at a position that can be engaged with the engagement concave portion 6 of the container body neck 4 by screwing the fitting cylinder 10 by a predetermined amount,
When the cap body 30 is fitted into the fitting cylinder 10, the cap body engages with the engagement surface 14 and elastically deforms the engagement piece 13 in the radially inward direction. Is provided so as to be engageable with the engaging recess 6.

Further, according to the present invention, the container body 1 raises the mouth / neck portion 4 from the upper end of the peripheral wall 2 through the shoulder portion 3, and the outer periphery of the shoulder portion is formed in the small outer diameter portion 8.
The cap main body lower part is formed in the large outer diameter part 39 via the outward flange 38, and the large outer diameter part lower part is fitted to the small outer diameter part 8 on the outer periphery of the shoulder part 3.

  Further, in the present invention, the lower portion of the fitting cylinder 10 is formed by the inner and outer double peripheral walls 16, and the large outer diameter portion 39 of the cap body 30 is fitted to the outer surface of the outer peripheral wall 16b of the double peripheral wall 16. It is characterized by.

  According to the present invention, since the cap body is divided into the upper cylindrical portion 31 and the lower cylindrical portion 32 and these are connected by the virgin seal 33 in the punching-opening-type container, it is possible to prevent unauthorized opening.

  Further, according to the present invention, since the dividing groove 12 is formed in the fitting cylinder 10, the fitting cylinder is easily expanded in diameter when the fitting cylinder 10 is fitted to the container body neck portion 4. Since the piece 13 is positioned in the split groove 12 when the fitting cylinder 10 is fitted, the fitting cylinder can be easily fitted. Further, when the cap main body 30 is fitted into the fitting cylinder 10, the engagement piece 13 can be fitted into the engagement recess 6 at the same time. Easy to install as a whole.

  Further, in the present invention, since the lower part of the cap body 30 has a large outer diameter and is engaged with the shoulder 8 of the container body, the cap body is firmly held and a gap is provided between the cap body and the container body. Therefore, the intrusion of water into the container is prevented.

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

  In FIG. 1, reference numeral 1 denotes a container body, and an oral neck 4 is erected from the upper end of the peripheral wall 2 through a shoulder 3. A male screw 5 is formed on the upper outer surface of the mouth / neck portion 4. The middle part in the vertical direction of the mouth-and-neck part 4 is thicker than the upper and lower parts of the mouth-and-neck part, and a pair of engaging recesses 6 in the vertical direction are provided in this thick part symmetrically about the axis of the container. ing.

  The lower surfaces of these engaging recesses 6 are closed by the bottom wall 7. Moreover, the outer periphery of the container body shoulder portion 3 is formed in a small outer diameter portion 8, and an upward step portion 9 is formed at the boundary between the small outer diameter portion and the peripheral wall portion below the small outer diameter portion.

  Reference numeral 10 denotes a fitting cylinder, and a female screw 11a is formed on the inner surface of the upper part of the fitting cylinder, and a male screw 11b is formed on the outer surface. The female screw 11a is a male screw 5 of the container body neck portion 4. Are screwed together. A split groove 12 is formed at an intermediate portion in the vertical direction of the fitting cylinder 10.

  An engaging piece 13 stands from the lower surface of the split groove 12. As shown in FIG. 3, the upper outer surface of the engaging piece protrudes outward from the split groove 12, and the upper surface of the protruding portion is formed on an engaging surface 14 inclined obliquely outward and downward. In addition, a cutout portion 15 is formed on the outer surface of the intermediate portion in the vertical direction of the engagement piece 13, and the inner surface of the intermediate portion in the vertical direction is cut into a square shape so that the engagement piece 13 can be deformed together with the cutout portion 15. It is said.

  The lower part of the fitting cylinder 10 is formed on an inner / outer double peripheral wall 16 that hangs down from the lower end of the peripheral wall portion in which the groove 12 is formed. That is, the inner peripheral wall 16a is suspended from the lower end of the peripheral wall portion where the groove 12 is formed, and the outer peripheral wall 16b is erected from the lower end of the inner peripheral wall via the outward flange. A plurality of engagement grooves 17 are vertically provided on the outer surface of the inner peripheral wall 16a at a predetermined interval in the circumferential direction.

  The upper surface of the fitting cylinder 10 is closed by the upper wall 18. A break line 19 is provided around the center of the upper wall 18, and a portion of the upper wall 18 surrounded by the break line 19 is formed in a punchable removal plate portion 20. A standing cylinder 21 is erected from the upper surface of the upper wall 18 portion outside the removal plate portion 20, and a hanging cylinder 22 is suspended from the lower surface, and the hanging cylinder 22 is the upper end of the container body neck portion 4. It is fitted to the inner surface of the part.

  Reference numeral 30 denotes a cap body, which is divided into upper and lower parts and is formed into an upper cylinder part 31 and a lower cylinder part 32. These pair of cylinder parts are virgin seals for preventing unauthorized opening via a breakable breakable piece 33a. 33 are connected. A female screw 34 is formed on the inner surface of the upper cylindrical portion 31, and the lower portion of the female screw is screwed to the male screw 11 b on the outer surface of the fitting cylinder 10.

  A punching rod 36 is suspended from the center of the bottom surface of the top wall 35 that closes the upper surface of the upper cylindrical portion 31. A short cylinder 37 is suspended from the top wall 35 portion of the outer periphery of the punching rod. An engaging claw 37a is suspended from the wall 35 portion.

  On the other hand, the lower cylinder portion 32 hangs the drooping cylinder 39 from the outer periphery of the outward flange 38 that is inclined to the lower diagonally connected to the virgin seal 33 via the fracture piece 33a, and the upper part of the drooping cylinder is formed on the outer surface of the outer wall 16b. Further, the lower part of the drooping cylinder 39 is fitted to the small outer diameter part 8 on the outer periphery of the container shoulder 3, and the lower end of the drooping cylinder is placed on the upward step part 9.

  A plurality of engaging claws 40 are suspended from the inner peripheral lower surface of the outward flange 38 at a predetermined interval in the circumferential direction, and the engaging pieces are engaged with the engaging grooves 17.

  Next, the operation will be described.

  The engagement piece 13 of the fitting cylinder 10 is positioned in the split groove 12 as shown in FIG. 3 before being assembled to the container body neck portion 4. When the fitting cylinder 10 is fitted to the outer surface of the container body neck 4 and screwed in a predetermined amount, the engaging piece 13 is positioned in front of the engaging recess 6.

  After the fitting cylinder 10 is fitted to the container body neck portion 4 in this way, when the cap body 30 is fitted to the outer surface of the fitting cylinder 10, the engagement claw 40 is engaged with the engagement surface 14 of the engagement piece 13. Then, the engagement piece 13 is elastically deformed inward (see the two-dot chain line in FIG. 3) and engaged with the engagement recess 6. At the same time, the lower end of the engagement piece 13 engages with the lower surface 7 of the engagement recess.

  When the cap body 30 is further pushed in, the upper part of the drooping cylinder 39 is fitted to the outer peripheral wall 16b of the lower part of the fitting cylinder 1, the lower part of the drooping cylinder is fitted to the small outer diameter part 8 of the shoulder of the container body peripheral wall, and The lower end of the drooping cylinder comes into contact with the upward step 9.

  To open the virgin seal 33, first pull the virgin seal 33 in the circumferential direction, remove the virgin seal from the cap body 30 (see FIG. 2), and then screw the upper cylindrical portion 31 of the cap body. Then, the punching rod 36 is lowered to punch out the removal plate portion 20 of the fitting cylinder 10, the upright cylinder 21 is fitted to the outer surface of the short cylinder 37, and the engaging claw 37a is engaged to the outer surface of the standing cylinder 21. Match. In addition, since the engagement piece 13 is engaged with the engagement recess 6 of the container body mouth / neck, the rotation of the lower cylindrical portion 32 is prevented.

FIG. 2 is a half sectional view of a container cap mounting structure according to the present invention, showing a state before a virgin seal is removed. It is a half sectional view showing the state after virgin seal removal. It is side sectional drawing of a part of engagement piece.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container body 2 Perimeter wall 3 Shoulder part 4 Neck part 5 Male screw of a mouth neck part 6 Engagement recessed part 8 Small outer diameter part 9 Upward step part 10 Fitting cylinder 12 Split groove 13 Engagement piece 14 Engagement surface 15 Notch part 16 Inner and outer double peripheral walls 16b Outer peripheral wall 18 Upper wall 19 Break line 20 Removal plate portion 31 Upper cylindrical portion 32 Lower cylindrical portion 33a Broken fragment 3
33 Virgin seal 35 Top wall 36 Punching bar 38 Outward flange 39 Drooping cylinder (large outer diameter part)

Claims (4)

In the container cap mounting structure for fitting the cap body 30 to the outer surface of the fitting tube 10 fitted to the outer surface of the container body neck portion 4,
The cap body 30 is divided into upper and lower parts and formed into an upper cylinder part 31 and a lower cylinder part 32, and the pair of cylinder parts are connected by a virgin seal 33 for preventing breakage without permission. A punching rod 36 is suspended from the top wall 35 of the main body,
The upper surface of the fitting cylinder 10 is closed by the upper wall 18, and a breaking line 19 is provided around the center of the upper wall, so that the upper wall portion surrounded by the breaking line is formed into a removable plate portion 20 that can be punched. And
A container cap mounting structure in which the punch bar is formed so that the removal plate portion 20 can be punched by screwing the cap body after the virgin seal is removed. A threaded portion 5 is formed on the upper outer surface of the container body neck 4 and an engaging recess 6 is provided on the outer surface of the container mouth neck in the vertical direction,
A split groove 12 is vertically provided in the middle portion of the fitting cylinder 10 in the vertical direction, and an engaging piece 13 that is elastically deformable radially inward from the lower surface of the split groove is erected, and the cap body is attached to the engaging piece. 30 is provided with an engagement surface 14 that can be engaged,
The engagement piece 13 is provided at a position that can be engaged with the engagement concave portion 6 of the container body neck 4 by screwing the fitting cylinder 10 by a predetermined amount,
When the cap body 30 is fitted into the fitting cylinder 10, the cap body engages with the engagement surface 14 and elastically deforms the engagement piece 13 in the radially inward direction. The container cap mounting structure according to claim 1, wherein said cap is provided to be engageable with said engaging recess. The container body 1 raises the mouth and neck portion 4 from the upper end of the peripheral wall 2 via the shoulder portion 3 and forms the outer periphery of the shoulder portion at the small outer diameter portion 8.
The cap body lower portion is formed in a large outer diameter portion 39 via an outward flange 38, and the large outer diameter portion lower portion is fitted to the small outer diameter portion 8 on the outer periphery of the shoulder portion 3. Item 3. A container cap mounting structure according to Item 1 or 2. The lower portion of the fitting cylinder (10) is formed by an inner and outer double peripheral wall (16), and a large outer diameter portion (39) of the cap body (30) is fitted to the outer surface of an outer peripheral wall (16b) of the double peripheral wall (16). The container cap mounting structure according to any one of 1, 2, or 3.

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