JP2018144832A - Cap unit and capped container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap unit with further improved usability with better handleability in lid opening/closing, while maintaining excellent sealability for a liquid hole.SOLUTION: A lid body 9 is detachably mounted on a cap body 8 with a male-screw part 14, formed at an outer peripheral part of the cap body 8, screwed into a female-screw part 19 formed at an inner peripheral part of the cap body 9. The male-screw part 14 has male-screw threads 14a arranged at equal intervals along the circumferential direction of the outer peripheral of the cap body 8, and a distance S between a starting end of one of neighboring male-screw threads 14a and a terminating end of the other of the neighboring male-screw threads 14a, being longer than a length of male-screw thread 14a. The female-screw part 19 has female-screw threads 19a, corresponding to the male-screw thread 14a, arranged at equal intervals along the circumferential direction of the inner peripheral of the lid body 9, and a length of the female-screw thread 19a is shorter than the distance S.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a cap unit and a container with a cap.

  2. Description of the Related Art Conventionally, there is a container with a cap in which a cap unit (plug body) is attached to a mouth and neck portion of a container body having an upper opening. Some cap units employ a structure in which a drinking mouth or a spout provided on the cap body is opened and closed by a lid attached to the cap body by screwing (see, for example, Patent Document 1 below). .

  Specifically, Patent Document 1 includes a cap body provided with an opening and a lid that opens and closes the opening, and a male screw provided on the lid is provided on the opening of the cap body. A structure is disclosed in which an opening of a container body is sealed by a packing (seal member) that is screwed into a screw and attached to a lid.

  Further, in Patent Document 1, the lid body is attached to the cap body by screwing between the female screw portion provided in the liquid passage hole on the cap body side and the male screw portion provided on the inner plug on the lid body side. A structure that is detachably attached is disclosed.

JP 2014-162544 A

  However, in the structure described in Patent Document 1, in any case, a female screw part is formed to pour out the beverage (contents) contained in the container body through the opening or liquid passage hole provided inside the cap body. The beverage will adhere to the applied part.

  In this case, the beverage adhering to the portion where the female screw portion is formed does not return to the container body side but remains in the portion where the female screw portion is formed. Further, since the opening and the liquid passage hole are on the bottom surface side of the cap body, the portion where the female screw portion is formed is very difficult to wash.

  Further, in the structure described in Patent Document 1, it is necessary to rotate the lid body by 360 ° (one rotation) or more with respect to the cap body before removing the lid body. It is troublesome.

  On the other hand, if the structure is such that the lid body is detachably attached to the cap body by screwing between the male screw portion provided on the outer peripheral portion of the cap body and the female screw portion provided on the inner side of the lid body. This eliminates the need to form a female thread portion in the liquid passage hole.

  However, in such a structure, in order to ensure the water stoppage for the liquid passage hole, management of the height dimension of the inner plug that closes the liquid passage hole becomes very strict.

  The present invention has been proposed in view of such conventional circumstances, and further improves usability by improving operability when opening and closing the lid while maintaining good sealing performance with respect to the liquid passage hole. It is an object of the present invention to provide a cap unit that can be improved, and a container with a cap including such a cap unit.

In order to achieve the above object, the present invention provides the following means.
[1] A cap body that is attached to the mouth-neck portion of the container body having an open top and has a liquid passage hole provided inside thereof, and a lid that opens and closes the liquid passage hole.
The lid includes an outer lid attached to an outer peripheral portion of the cap main body, and an inner plug that is provided inside the outer lid and closes the liquid passage hole while being fitted inside the cap main body. And is detachably attached to the cap main body by screwing a male screw portion provided on the outer peripheral portion of the cap body and a female screw portion provided on the inner peripheral portion of the outer lid. Has a structure,
The male screw portion has a plurality of male screw threads arranged at equal intervals in the circumferential direction on the outer peripheral portion of the cap body, and a start end of one male screw thread and a terminal end of the other male screw thread adjacent to each other. Having a longer interval than the circumference of the male thread,
The female screw portion has a plurality of female screw threads arranged at equal intervals in the circumferential direction on the inner peripheral portion of the outer lid, corresponding to each of the plurality of male screw threads, A cap unit having a circumference shorter than the interval.
[2] The outer peripheral portion of the cap body corresponds to an outer peripheral convex surface continuous from the position corresponding to each of the plurality of male screw threads toward the upper end of the outer peripheral portion, and each of the plurality of male screw threads. An outer peripheral concave surface that continues from the position toward the upper end and the lower end of the outer peripheral portion, and continues from the position corresponding to each of the plurality of male screw threads toward the lower end of the outer peripheral portion;
The cap unit according to [1], wherein the plurality of female screw threads are guided from the outer peripheral concave surface to a position where they are screwed into the plurality of male screw threads.
[3] The cap unit according to [1] or [2], wherein the inner peripheral portion of the cap body has an inner peripheral concave surface at a position facing the outer peripheral convex surface.
[4] A stopper mechanism for fixing the lid to the cap body is provided.
The stopper mechanism has an engagement convex portion on one side of the male screw thread and the female screw thread, and an engagement concave portion on either side.
[1] to [3], wherein the engaging convex portion and the engaging concave portion are engaged with each other at a position where screwing of the male screw thread and the female screw thread is completed. The cap unit according to any one of the above.
[5] The stopper mechanism has an abutting convex portion on one terminal side of the male screw thread and the female screw thread,
Either the male screw thread or the female screw thread at a position where the cap screw body is rotated in one direction with respect to the cap body and the male screw thread and the female screw thread are completely screwed together. While the other starting end side is abutted against one end side of the abutting convex portion,
After the lid body is rotated in the other direction with respect to the cap body, and the screwing of the male screw thread and the female screw thread is released, either the male screw thread or the female screw thread The cap unit according to [4], wherein the other end side is in contact with the other end side of the contact protrusion.
[6] The [1] to [1], wherein the lid includes a first seal member attached to a lower end portion of the inner plug and sealing between the liquid passage hole and the inner plug. [5] The cap unit according to any one of [5].
[7] The cap unit according to [6], wherein the first seal member includes a protrusion that closes the liquid passage hole by being in contact with a bottom surface of the cap body.
[8] The above-mentioned [7], wherein the first seal member urges the lid body upward by elastically deforming the protrusion that closes the liquid passage hole. Cap unit.
[9] The above-mentioned [1] to [8], further comprising a second seal member attached to an outer peripheral portion of the inner plug and sealing between the inner side of the cap body and the inner plug. Cap unit according to any one of the above.
[10] The cap body has a tapered hole portion gradually reduced in diameter from the upper end side downward, and a straight hole portion having the same diameter downward from the lower end of the tapered hole portion,
The second seal member is in close contact with the straight hole near the boundary between the tapered hole and the straight hole when the inside of the cap body and the inner plug are sealed. The cap unit according to [9] above, wherein
[11] The cap unit according to any one of [1] to [10],
A container with a cap comprising a container body to which the cap unit is attached.
[12] The container with a cap according to [11], wherein the container body has a vacuum heat insulating structure.

  As described above, according to the present invention, the cap unit that enables further improvement in usability by improving the operability when opening and closing the lid while maintaining good sealing performance with respect to the liquid passage hole, It is also possible to provide a capped container provided with such a cap unit.

It is a perspective view which shows the structure of the container with a cap provided with the cap unit which concerns on one Embodiment of this invention. It is sectional drawing which shows the structure of the cap unit shown in FIG. 1, and a container main body. It is a perspective view which shows the state which removed the cover body with respect to the cap main body of the cap unit shown in FIG. 1 shows a state in which a lid is attached to the cap body of the cap unit shown in FIG. 1, (a) is a transparent side view seen from the outer peripheral convex side, and (b) is a transparent side view seen from the outer peripheral concave side. FIG. It is a figure for demonstrating attachment / detachment operation of the cover body with respect to the cap main body of the cap unit shown in FIG. 1, (a) is a see-through | perspective plan view which shows the state by which the screwing of the external thread and the internal thread was released, (B) is a see-through plan view showing a state in which screwing of a male screw thread and a female screw thread is completed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As an embodiment of the present invention, for example, a cap-equipped container 100 including the cap unit 1 shown in FIGS. 1 to 5 will be described. FIG. 1 is a perspective view showing the configuration of the container 100 with a cap. FIG. 2 is a cross-sectional view showing the configuration of the cap unit 1 and the container body 2. FIG. 3 is a perspective view showing a state in which the lid body 9 is removed from the cap body 8 of the cap unit 1. 4A and 4B show a state in which the lid body 9 is attached to the cap body 8 of the cap unit 1. FIG. 4A is a perspective side view seen from the outer peripheral convex surface 15a side, and FIG. It is the see-through | perspective side view seen from 15b, 15c side. FIG. 5 is a view for explaining the attaching / detaching operation of the lid body 9 with respect to the cap main body 8 of the cap unit 1, and (a) shows a state in which the screwing of the male screw thread 14 a and the female screw thread 19 a is released. (B) is a perspective plan view showing a state in which the screw thread 14a and the screw thread 19a are completely screwed together.

  The container 100 with a cap of this embodiment is provided with the cap unit 1 of this embodiment and the container main body 2 to which this cap unit 1 is detachably attached, as shown in FIGS. The cap-equipped container 100 is a beverage container that can retain or cool the beverage (contents) stored in the container body 2 by the container body 2 having a vacuum heat insulating structure.

  Specifically, the container body 2 includes a bottomed cylindrical outer container 3 and an inner container 4 made of, for example, stainless steel, and the mouth portions of the container body 2 are disposed in a state in which the inner container 4 is accommodated inside the outer container 3. It consists of a double-structured container that is joined. A vacuum heat insulating layer 5 is provided between the outer container 3 and the inner container 4. The vacuum heat insulating layer 5 can be formed, for example, by closing a deaeration hole provided at the center of the bottom surface of the outer container 3 in a chamber that is depressurized (evacuated) to a high vacuum.

  The container body 2 includes a substantially circular bottom surface portion 2a, a body portion 2b that rises in a substantially cylindrical shape from the outer periphery of the bottom surface portion 2a, and a substantially cylindrical mouth and neck portion 2c that is reduced in diameter on the upper side of the body portion 2b. And have. Further, the upper end portion of the mouth-and-neck portion 2 c opens in a circular shape as the upper opening portion 2 d of the container body 2.

  The inner peripheral surface of the mouth-and-neck portion 2c is smaller in diameter than the inner peripheral surface of the trunk portion 2b. Moreover, the 1st internal thread part 6 is provided in the internal peripheral surface of the mouth neck part 2c. The first female screw portion 6 is composed of a screw thread protruding in a spiral shape from the upper end side of the mouth-and-neck portion 2c downward. Furthermore, a ring-shaped protruding portion 7 is provided below the first female screw portion 6 so as to protrude from the inner peripheral surface of the container body 2 over the entire circumference.

  In addition, although the container 100 with a cap of this embodiment has the substantially cylindrical external appearance shape as a whole, it does not specifically limit about the external appearance shape of the container 100 with a cap, Size, a design, etc. In addition, it is possible to make appropriate changes. The outer peripheral surface of the container body 2 may be painted or printed.

  The cap unit 1 of the present embodiment constitutes a plug that closes the upper opening 2d of the container body 2, and includes a cap body 8 and a lid 9 that is detachably attached to the cap body 8. ing.

  The cap body 8 is a substantially cylindrical member made of a heat resistant resin such as polypropylene (PP). In addition to the PP described above, for example, a thermoplastic resin such as acrylonitrile, butadiene, styrene (ABS) can be used for the cap body 8.

  The inner peripheral portion of the cap body 8 includes a tapered hole portion 8a that is gradually reduced in diameter from the upper end side downward, and a straight hole portion 8b that has the same diameter from the lower end of the tapered hole portion 8a downward. Have. A circular liquid passage hole 10 is provided on the bottom surface of the cap body 8.

  The outer peripheral portion of the cap body 8 has a ring-shaped stepped surface 8c that comes into contact with the upper end of the mouth-and-neck portion 2c, and a lower outer peripheral surface 8d that has substantially the same diameter downward from the outer peripheral side of the stepped portion 8c. And an upper outer peripheral surface 8e having substantially the same diameter upward from the inner peripheral side of the stepped portion 8c.

  A first external thread portion 11 is provided on the lower outer peripheral surface 8 d of the cap body 8. The first male screw portion 11 is composed of a screw thread that protrudes spirally upward from the lower end side of the lower outer peripheral surface 8d. Thereby, the cap main body 8 can be detachably attached to the mouth-and-neck portion 2c of the container main body 2 by screwing of the screw threads constituting the first female screw portion 6 and the first male screw portion 11. It has become.

  A water-stop packing 12 is detachably attached to the lower end portion of the lower outer peripheral surface 8d (cap body 8). The water-stop packing 12 is a ring-shaped seal member, and is made of an elastic member such as a heat-resistant rubber such as silicone rubber or an elastomer. On the other hand, a flange portion 13 is provided at the lower end portion of the lower outer peripheral surface 8d so as to protrude in the diameter increasing direction. The water blocking packing 12 is fitted to the flange portion 13 over the entire circumference.

  Further, a plurality of (two in the present embodiment) elastic flange portions 12 a arranged in the vertical direction are provided on the outer peripheral surface of the water stop packing 12 so as to protrude in the diameter expansion direction. When the cap main body 8 is attached to the mouth / neck portion 2c of the container main body 2, the water-stopping packing 12 is in close contact with the overhanging portion 7 of the container main body 2 while the elastic flange portion 12a is elastically deformed. It will be in the state. Thereby, it is possible to seal between the overhang | projection part 7 (container main body 2) and the lower outer peripheral surface 8d (cap main body 8). In addition, the height dimension of the inner plug 18 that closes the liquid passage hole 10 can be easily managed.

  Moreover, it is preferable that the water stop packing 12 has the lower elastic flange portion 12 a in contact with the top side of the overhanging portion 7 and the upper elastic flange portion 12 a in contact with the entry side of the overhanging portion 7. Thereby, the airtightness between the overhang | projection part 7 (container main body 2) and the lower outer peripheral surface 8d (cap main body 8) can be improved.

  On the other hand, the water-stop packing 12 can be detached from the flange portion 13 by elastically deforming (stretching and extending) itself. Thereby, the water stop packing 12 and the cap main body 8 can be cleaned separately, and the space between the water stop packing 12 and the flange portion 13 can be kept hygienic.

  In addition, about the water stop packing 12, it is not necessarily limited to the thing of the shape mentioned above, For example, about the number of the elastic flange parts 12a, it is not restricted to the two mentioned above, but shall be 1 or 3 or more. It is also possible. Moreover, the water stop packing 12 is not necessarily limited to the structure provided with the elastic flange part 12a mentioned above, It can change suitably about the shape etc.

  A second male screw portion 14 is provided on the upper outer peripheral surface 8 e of the cap body 8. The second male screw portion 14 is composed of a plurality (two in this embodiment) of male screw threads 14a arranged at equal intervals in the circumferential direction on the upper outer peripheral surface 8e. Further, a gap S longer than the circumferential length of the male screw thread 14a is provided between the start end of one male screw thread 14a adjacent to each other and the end of the other male screw thread 14a.

  The plurality of male screw threads 14a are formed so as to protrude in a spiral shape so as to be complementary to each other in the circumferential direction of the upper outer peripheral surface 8e. Specifically, the plurality of male screw threads 14a are formed such that the start end of one male screw thread 14a adjacent to each other and the start end of the other male screw thread 14a are 360 ° / N around the axis (N is the male screw thread 14a). (In this embodiment, the phase difference is 180 °).

  The upper outer peripheral surface 8e of the cap body 8 has an outer peripheral convex surface 15a continuous from the position corresponding to each of the plurality of male screw threads 14a toward the upper end of the upper outer peripheral surface 8e. Further, the upper outer peripheral surface 8e of the cap body 8 has an outer peripheral concave surface 15b that continues from the position corresponding to each space (interval S) between the plurality of male screw threads 14a toward the upper end and the lower end of the upper outer peripheral surface 8e. Yes. Further, the upper outer peripheral surface 8e of the cap body 8 has an outer peripheral concave surface 15c continuous with the outer peripheral concave surface 15b from the position corresponding to each of the plurality of male screw threads 14a toward the lower end of the cap main body 8.

  A plurality (two in this embodiment) of inner concave surfaces 15 d are provided in the tapered hole portion 8 a of the cap body 8. The inner peripheral concave surface 15d is formed so as to be cut out with a predetermined width from a position facing the outer peripheral convex surface 15a toward the upper end of the tapered hole portion 8a in accordance with the shape of the outer peripheral convex surface 15a. The outer peripheral convex surface 15 a and the inner peripheral concave surface 15 d constitute a wide-mouthed portion 16 that is gradually expanded in diameter from the opposite position across the liquid passage hole 10 of the cap body 8 toward the upper end of the cap body 8. In the cap unit 1 of the present embodiment, it is possible to easily drink or pour the beverage (contents) flowing out from the liquid passage hole 10 by providing such a wide mouth portion 16.

  The lid body 9 opens and closes the liquid passage hole 10 and has an outer lid 17 and an inner plug 18 made of a heat resistant resin such as polypropylene (PP). In addition to the PP described above, the outer lid 17 may be made of a thermoplastic resin such as acrylonitrile / butadiene / styrene (ABS). Moreover, it is also possible to use a resin having excellent wear resistance such as polyacetal (POM).

  The outer lid 17 is attached to the outer peripheral portion of the container main body 2 to close the upper portion of the container main body 2, and is a peripheral wall formed in a substantially cylindrical shape so as to be flush with the body portion 2 b of the container main body 2. It has the part 17a and the substantially disk-shaped top wall part 17b which obstruct | occludes the upper part of the surrounding wall part 17a. In addition, a second female screw portion 19 is provided on the inner peripheral surface of the peripheral wall portion 17a (the outer lid 17).

  A plurality of second female screw portions 19 are arranged at equal intervals in the circumferential direction on the inner peripheral surface of the peripheral wall portion 17a corresponding to each of the plurality of male screw threads 14a constituting the second male screw portion 14 described above. It is comprised from the female thread 19a (two in this embodiment). Further, the circumferential length of the plurality of female screw threads 19a is shorter than the interval S between the adjacent male screw threads 14a described above. As a result, the plurality of female screw threads 19a are guided from outer peripheral concave surfaces 15b and 15c, which will be described later, to positions that are screwed into the plurality of male screw threads 14a.

  The plurality of female screw threads 19a are formed to project in a spiral shape so as to be complementary to each other in the circumferential direction of the inner peripheral surface of the peripheral wall portion 17a. Specifically, the plurality of female screw threads 19a are formed such that the start end of one female screw thread 19a adjacent to each other and the start end of the other female screw thread 19a are 360 ° / N around the axis (N is the female screw thread 19a). (In this embodiment, the phase difference is 180 °).

  As a result, the lid body 9 (outer lid 17) is screwed with a female screw thread 19a constituting a second female screw part 19 described later and a male screw thread 14a constituting a second male screw part 14. The cap body 8 can be detachably attached to the outer peripheral portion (upper outer peripheral surface 8e).

  In addition, the cap unit 1 of this embodiment includes a stopper mechanism 20 that fixes the lid body 9 to the cap body 8. The stopper mechanism 20 includes an engagement convex portion 20a on one side of the male thread 14a and the female thread 19a (in this embodiment, the female thread 19a) and one of the other side (in this embodiment, the male thread). 14a) has an engaging recess 20b.

  The engaging convex part 20a is located in front of the terminal end of the female screw thread 19a constituting the female screw part 19, and is formed to protrude from the upper end of the female screw thread 19a. On the other hand, the engaging recess 20b is located in front of the end of the male thread 14a constituting the male thread 14 and is formed so as to cut out the lower end of the male thread 14a. Further, a protrusion 20c is formed to protrude from the lower end of the male screw thread 14a immediately before the engaging recess 20b of the male screw thread 14a. Thereby, in the stopper mechanism 20, the engagement convex part 20a and the engagement recessed part 20b are mutually engaged in the position where the screwing of the male screw thread 14a and the female screw thread 19a which are mentioned later was completed. .

  The stopper mechanism 20 has an abutment convex portion 20d on the terminal side of either the male screw thread 14a or the female screw thread 19a (in this embodiment, the male screw thread 14a). The contact convex portion 20d is located at the terminal end of the male screw thread 14a constituting the male screw part 14, and is formed to protrude from the lower end of the male screw thread 14a.

  Thereby, in the stopper mechanism 20, the lid body 9 is rotated in one direction (clockwise direction) with respect to the cap body 8, and at the position where the screwing of the male screw thread 14a and the female screw thread 19a is completed, The starting end side of either the male screw thread 14a or the female screw thread 19a (in this embodiment, the female screw thread 19a) is brought into contact with one end side of the contact protrusion 20d.

  On the other hand, in the stopper mechanism 20, the lid 9 is rotated in the other direction (counterclockwise direction) with respect to the cap body 8, and the male screw thread 14 a and the female screw thread 19 a are released from the screw engagement. The other end (the female thread 19a in the present embodiment) of the thread 14a and the female thread 19a is brought into contact with the other end of the contact protrusion 20d.

  Therefore, the lid body 9 with respect to the cap body 8 is approximately 180 ° / N around the axis between the starting end of one female thread 19a adjacent to each other and the terminal end of the other female thread 19a (this embodiment). In this case, the rotation is prevented within an angle range of approximately 90 °.

  The stopper mechanism 20 has a configuration in which the engaging convex portion 20a is provided on the female screw thread 19a side and the engaging concave portion 20b is provided on the male screw thread 14a side. It is also possible to provide a configuration in which the engaging convex portion 20a is provided on the male screw thread 14a side and the engaging concave portion 20b is provided on the female screw thread 19a side.

  In addition, the stopper mechanism 20 has a configuration in which the abutment convex portion 20d is provided on the end side of the male thread 14a described above, but a configuration opposite to that, that is, abuts on the end side of the female thread 19a. It is also possible to employ a configuration in which the convex portion 20d is provided.

  The inner plug 18 closes the liquid passage hole 10 while being fitted inside the cap body 8, and is integrally attached to the inner side of the outer lid 17. Specifically, the inner plug 18 is formed of a substantially bottomed cylindrical member made of a resin having excellent heat resistance such as polypropylene (PP), for example, and the center of the lower surface of the ceiling wall portion 17b (outer lid 17) described above. It is configured to be attached integrally by ultrasonic welding or the like. Note that the inside of the inner plug 18 is not limited to air serving as a heat insulating layer, and may have a configuration in which a heat insulating material is disposed.

  A plug packing 21 as a first seal member is detachably attached to the lower end portion of the inner plug 18. The stopper packing 21 is made of an elastic member such as rubber or elastomer having heat resistance such as silicone rubber, for example, similar to the water blocking packing 12.

  The stopper packing 21 has a protrusion 21 a that closes the liquid passage hole 10 by contacting the bottom surface of the cap body 8. The protrusion 21a is formed to bulge out in a substantially dome shape. On the other hand, the lower end portion of the inner plug 18 is provided with a fitting convex portion 22 that is fitted inside the protruding portion 21a. Thereby, the stopper packing 21 is detachably attached to the lower end portion of the inner stopper 18.

  The stopper packing 21 attached to the lower end of the inner stopper 18 is brought into contact with the bottom surface of the cap body 8 while the protrusion 21a is elastically deformed when the lid 9 is attached to the cap body 8. Thus, the liquid passage hole 10 is closed. Thereby, the space between the liquid passage hole 10 and the inner plug 18 can be sealed (plugged).

  Further, since the plug packing 21 can be removed from the inner plug 18 (lid 9) and cleaned separately from the lid 9, the gap between the plug packing 21 and the inner plug 18 (lid 9) is sanitized. It is possible to keep.

  A lid packing 23 as a second seal member is detachably attached to the outer peripheral portion of the inner plug 18. The lid packing 23 is made of a ring-shaped elastic member such as a heat-resistant rubber such as silicone rubber or an elastomer, like the water-stop packing 12. On the other hand, a groove portion 24 cut out in a ring shape is provided on the outer peripheral surface of the inner plug 18. The lid packing 23 is fitted in the groove 24 over the entire circumference.

  In addition, a plurality of (two in the present embodiment) elastic flange portions 23 a arranged in the vertical direction are provided on the outer peripheral surface of the lid packing 23 so as to protrude in the diameter expansion direction. When the lid 9 is attached to the cap main body 8, the lid packing 23 is in close contact with the inner side of the cap main body 8 while the elastic flange portion 23 a is elastically deformed. Thereby, it is possible to seal (close) between the liquid passage hole 10 and the inner plug 18.

  The lid packing 23 has a state in which the elastic flange portion 23a is in close contact with the straight hole portion 8b near the boundary between the tapered hole portion 8a and the straight hole portion 8b when the inner plug 18 closes the liquid passage hole 10. It is preferable to become. Thereby, when removing the cover body 9 from the cap body 8, the liquid passage hole 10 and the inner plug 18 are merely moved from the state in which the elastic flange portion 23a is in close contact with the straight hole portion 8b to the tapered hole portion 8a side. Can be opened (opened).

  On the other hand, the lid packing 23 can be removed from the groove portion 24 by elastically deforming (stretching) the lid packing 23 itself. Thereby, the lid packing 23 and the lid body 9 can be separately cleaned, and the space between the lid packing 23 and the groove portion 24 (inner plug 18) can be kept hygienic.

  In addition, about the lid packing 23, it is not necessarily limited to the thing of the shape mentioned above, For example, about the number of the elastic flange parts 23a, it shall not be restricted to the two mentioned above, but shall be 1 or 3 or more. Is also possible. Further, the lid packing 23 is not necessarily limited to the configuration provided with the elastic flange portion 23a described above, and the shape and the like can be appropriately changed.

  In the cap unit 1 having the above configuration, when the lid body 9 is attached to the cap body 8 and the liquid passage hole 10 and the upper part of the cap body 8 are closed, first, as shown in FIG. By covering the cap body 8 with the lid 9, the inner plug 18 is fitted inside the cap body 8.

  At this time, the female screw thread 19a constituting the second female screw part 19 is guided from the outer peripheral concave surface 15b to a position screwed to the male screw thread 14a constituting the second male screw part 14. That is, in this cap unit 1, the inner plug 18 can be fitted inside the cap body 8 only from a position where the female thread 19a and the outer peripheral concave surface 15b shown in FIG.

  Next, from this state, the lid is placed in a direction (clockwise direction) in which the female screw thread portion 19a (second female screw portion 19) is screwed to the male screw thread 14a (second male screw portion 14). By rotating the body 9, screwing of the male screw thread 14a (second male screw part 14) and the female screw thread part 19a (second female screw part 19) is started. Thereby, the leading end side of the female screw thread 19a moves toward the terminal end side of the male screw thread 14a while being guided by the outer peripheral concave surface 15c. Along with this, the inner plug 18 moves toward the lower side of the cap body 8 while rotating.

  At this time, the plug packing 21 urges the lid 9 upward while the protrusion 21 a contacting the bottom surface of the cap body 8 is elastically deformed. Moreover, in the stopper mechanism 20, as shown in FIG.5 (b), after the engaging convex part 20a gets over the protrusion part 20c, it is engaged with the engaging recessed part 20b. Thereby, the lid body 9 can be fixed to the cap body 8 while providing a click feeling at the position where the screw thread 14a and the female thread thread 19a are screwed together. Furthermore, when the starting end of the female thread 19a is brought into contact with one end of the contact projection 20d, the clockwise rotation of the lid body 9 with respect to the cap body 8 is prevented.

  In the state where the lid body 9 is fixed to the cap body 8, the plug packing 21 closes the liquid passage hole 10 by the protruding portion 21 a that is in contact with the bottom surface portion of the cap body 8. Thereby, the space between the liquid passage hole 10 and the inner plug 18 can be sealed (plugged).

  Further, in this state, the lid packing 23 is pushed into the cap body 8 together with the inner plug 18, and is in close contact with the straight hole 8 b of the cap body 8 over the entire circumference. Thereby, the inside of the cap main body 8 and the inside plug 18 can be sealed (plugged).

  Further, in a state where the lid body 9 is attached to the cap body 8, the upper portion (the top wall portion 17b) of the outer lid 17 covers the upper portion of the cap body 8, and the outer peripheral portion (the peripheral wall portion 17a) of the outer lid 17 is the container. The main body 2 is substantially flush with the body 2b. Thereby, the upper part of the cap main body 8 can be obstruct | occluded with the outer lid | cover 17 (lid body 9).

  On the other hand, in the cap unit 1, when the lid body 9 is removed from the cap body 8 from the state where the lid body 9 is attached to the cap body 8, an operation opposite to the above-described operation may be performed. That is, in the direction opposite to the direction in which the female screw thread portion 19a (second female screw portion 19) is screwed into the male screw thread 14a (second male screw portion 14) (counterclockwise direction), the lid The body 9 is rotated.

  Thus, after the engagement between the engagement convex portion 20a and the engagement concave portion 20b is released, the terminal end side of the female screw thread 19a moves toward the start end side of the male screw thread 14a while being guided by the outer peripheral concave surface 15c. . Along with this, the inner plug 18 moves toward the upper side of the cap body 8 while rotating. Furthermore, the screwing of the male screw thread 14a and the female screw thread 19a is released. Thereafter, since the end of the female thread 19a is brought into contact with the other end of the contact projection 20d, rotation of the lid 9 in the counterclockwise direction relative to the cap body 8 is prevented. From this state, it is possible to remove the lid 9 from the cap body 8.

  As described above, in the cap unit 1 of the present embodiment, when the lid body 9 is removed from the cap body 8, there is no screw thread or the like for screwing in the inside of the cap body 8 and the liquid passage hole 10. The flow of the beverage (contents) flowing out from the liquid passage hole 10 is not hindered and the beverage (contents) is not accumulated. Thereby, the liquid permeability and the washing | cleaning property in the liquid passage hole 10 can be kept favorable, and it is possible to make it easy to drink or pour the drink (contents) which flowed out from this liquid passage hole 10.

  Further, in the cap unit 1 of the present embodiment, the lid body 9 can be attached to and detached from the cap body 8 with a small rotational operation. Specifically, the lid 9 can be easily attached to and detached from the cap body 8 simply by rotating the lid 9 with respect to the cap body 8 within an angle range of 180 ° / N (generally 90 ° in the present embodiment). And can be carried out stably. Furthermore, it is easy to align the male screw thread 14a and the female screw thread 19a when starting the screwing of the male screw thread 14a and the female screw thread 19a.

  As described above, in the cap unit 1 of the present embodiment, it is possible to improve the operability when opening and closing the lid body 9 while maintaining good sealing performance with respect to the liquid passage hole 10. Therefore, in the container 100 with a cap provided with such a cap unit 1, it is possible to further improve the usability.

In addition, this invention is not necessarily limited to the thing of the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
That is, in the said embodiment, although the case where this invention is applied to the container 100 with a cap which gave the heat retention / cooling function by the container main body 2 which has the vacuum heat insulation structure mentioned above is illustrated, such a vacuum heat insulation structure It is not necessarily limited to the thing provided with the container main body 2 which has these. That is, the present invention can be widely applied to containers with a cap in which the cap unit is detachably attached to the mouth and neck of the container body.

  DESCRIPTION OF SYMBOLS 100 ... Container with cap 1 ... Cap unit 2 ... Container main body 2c ... Mouth neck part 2d ... Upper opening part 3 ... Outer container 4 ... Inner container 5 ... Vacuum heat insulation layer 6 ... First female screw part 7 ... Overhang part 8 ... Cap body 8a ... Tapered hole 8b ... Straight hole 8c ... Step surface 8d ... Lower outer peripheral surface 8e ... Upper outer peripheral surface (outer peripheral part) 9 ... Cover body 10 ... Liquid hole 11 ... First male screw part 12 ... Water stop packing 13 ... Flange part 14 ... Second male screw part 14a ... Male screw thread 15a ... Outer peripheral convex surface 15b, 15c ... Outer peripheral concave surface 15d ... Inner peripheral concave surface 16 ... Wide mouth part 17 ... Outer lid 18 ... Inner plug 19 ... Second female screw part 19a ... Female screw thread 20 ... Stopper mechanism 20a ... Engaging convex part 20b ... Engaging concave part 20c ... Protruding part 20d ... Abutting convex part 21 ... Plug packing (first seal member) 21a ... Protruding Part 22 ... fitting projection 23 ... cover packing (second seal member) 23a ... elastic flange portion S ... Interval

Claims (12)

A cap body that is attached to the mouth and neck of the container body that is open at the top, and that has a liquid passage hole therein, and a lid that opens and closes the liquid passage hole,
The lid includes an outer lid attached to an outer peripheral portion of the cap main body, and an inner plug that is provided inside the outer lid and closes the liquid passage hole while being fitted inside the cap main body. And is detachably attached to the cap main body by screwing a male screw portion provided on the outer peripheral portion of the cap body and a female screw portion provided on the inner peripheral portion of the outer lid. Has a structure,
The male screw portion has a plurality of male screw threads arranged at equal intervals in the circumferential direction on the outer peripheral portion of the cap body, and a start end of one male screw thread and a terminal end of the other male screw thread adjacent to each other. Having a longer interval than the circumference of the male thread,
The female screw portion has a plurality of female screw threads arranged at equal intervals in the circumferential direction on the inner peripheral portion of the outer lid, corresponding to each of the plurality of male screw threads, A cap unit having a circumference shorter than the interval. The outer peripheral portion of the cap body is formed from a position corresponding to each of the plurality of male screw threads from an outer peripheral convex surface continuous toward the upper end of the cap body, and a position corresponding to each of the plurality of male screw threads. Continuing toward the upper end and the lower end of the outer peripheral portion, and having an outer peripheral concave surface continuous from the position corresponding to each of the plurality of male screw threads toward the lower end of the outer peripheral portion,
2. The cap unit according to claim 1, wherein the plurality of female screw threads are guided from the outer peripheral concave surface to a position to be screwed into the plurality of male screw threads.   The cap unit according to claim 1, wherein the inner peripheral portion of the cap body has an inner peripheral concave surface at a position facing the outer peripheral convex surface. A stopper mechanism for fixing the lid to the cap body;
The stopper mechanism has an engagement convex portion on one side of the male screw thread and the female screw thread, and an engagement concave portion on either side.
4. The engagement convex portion and the engagement concave portion are engaged with each other at a position where screwing of the male screw thread and the female screw thread is completed. The cap unit according to one item. The stopper mechanism has an abutment convex portion on one end side of the male screw thread and the female screw thread,
Either the male screw thread or the female screw thread at a position where the cap screw body is rotated in one direction with respect to the cap body and the male screw thread and the female screw thread are completely screwed together. While the other starting end side is abutted against one end side of the abutting convex portion,
After the lid body is rotated in the other direction with respect to the cap body, and the screwing of the male screw thread and the female screw thread is released, either the male screw thread or the female screw thread The cap unit according to claim 4, wherein the other end side is in contact with the other end side of the contact projection.   The said cover body is attached to the lower end part of the said internal stopper, and has a 1st sealing member which seals between the said liquid passage hole and the said internal stopper, The any one of Claims 1-5 characterized by the above-mentioned. The cap unit according to one item.   The cap unit according to claim 6, wherein the first seal member has a protrusion that closes the liquid passage hole by being in contact with a bottom surface of the cap body.   8. The cap unit according to claim 7, wherein the first sealing member biases the lid body upward by elastically deforming the protrusion that closes the liquid passage hole. 9.   It has a 2nd sealing member attached to the outer peripheral part of the said internal stopper, and seals between the inner side of the said cap main body and the said internal stopper, The Claim 1 characterized by the above-mentioned. Cap unit. The cap body has a tapered hole portion gradually reduced in diameter from its upper end side downward, and a straight hole portion having the same diameter from the lower end of the tapered hole portion downward.
The second seal member is in close contact with the straight hole near the boundary between the tapered hole and the straight hole when the inside of the cap body and the inner plug are sealed. The cap unit according to claim 9. The cap unit according to any one of claims 1 to 10,
A container with a cap comprising a container body to which the cap unit is attached.   The container with a cap according to claim 11, wherein the container body has a vacuum heat insulating structure.

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