JP2010265031A - Sealed container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealed container capable of exhibiting a relaxing preventive effect without enlarging a fastening member. <P>SOLUTION: A container body 2 and a cap 3 for closing an opening part provided in the container body 2 are to be screw-joined, and a screw thread 4 provided on the container body 2 side and a screw groove 5 provided on the cap 3 side are constituted to be engageable with each other. The screw groove 5 has a screw groove width widened part where the circumferential width is locally widened, and a highly projected part 12a for increasing a tightening force between both the container body 2 and the cap 3 when the container body 2 and the cap 3 are relatively rotated in the peripheral direction or/and generating a click feeling. In addition, when the cap 3 is tightened to the container body 2 in the direction along the screw thread 4 in the line direction and the screw groove 5, the screw thread 4 enters into the screw groove width widened part, and the cap 3 and the container body 2 are relatively rotatable circumferentially. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a sealed container.

  Various sealed containers for fastening the container body and the cap are known. In addition, the sealed containers that use screws include solids such as liquids and powders, and semi-solids such as creams and gels, and the inside is sealed by screwing the cap onto the container body. Sealed containers are known. In view of this, there has been proposed a loosening prevention structure for preventing such a cap from being loosened for such a container (see Patent Document 1).

  The container described in Patent Document 1 is a synthetic resin in which a female screw is formed on the inner surface side of the skirt portion of the cap so as to be screwed with a male screw formed on the outer surface side of the mouth and neck portion of the container body. Has a cap. An annular neck ring is formed below the male screw of the mouth and neck. Corresponding to the neck ring, at least three or more vertical ribs are formed at substantially equal intervals in the circumferential direction of the skirt portion on the inner surface side of the lower end portion of the skirt portion of the cap. Then, the vertical rib of the cap is configured to come into contact with the neck ring of the mouth neck portion from the outside in a state where the cap is sufficiently screwed to the mouth neck portion.

JP 2003-40296 A

  In the container described in Patent Document 1, an annular neck ring is formed below the male screw of the mouth-and-neck portion in order to prevent loosening, and a vertical rib is formed on the inner surface side of the lower end portion of the skirt portion of the cap. Forming. Such a structure requires a special cap and mouth / neck region to prevent loosening, which results in a large container.

  Then, the objective of this invention is providing the sealed container which can exhibit the loosening prevention effect, without enlarging a sealed container.

  In order to achieve the above object, the sealed container of the present invention is a sealed container that is fastened by screwing a container body and a cap that closes an opening provided in the container body, on either side of the container body or the cap. The thread of the screw engaging portion provided and the screw groove of the screw engaging portion provided on the other side are configured to be engageable, and the screw groove is a screw having a locally wide width. A wide groove, and a protrusion that increases the tightening force between the container body and the cap when the container body and the cap rotate relative to each other in the circumferential direction and / or generates a click feeling. And when it tightens in the direction along the linear direction of a thread groove, a screw thread enters into the wide thread groove part, and the cap and the container main body are relatively rotatable in the circumferential direction.

  Here, it is preferable to generate a locking force between the wide thread groove portion and the screw thread by rotating the container body and the cap relative to each other in the circumferential direction in the state where the thread groove is in the wide thread groove portion.

  In addition, the packing may be disposed between the open end of the container body and the bottom surface of the cap, and the packing may be crushed in a state where the thread groove wide portion and the thread are strongly engaged by relative rotation in the circumferential direction. preferable.

  In addition, when the cap is tightened into the container body in the direction along the direction of the thread and the groove of the thread groove, a part or all of the first convex portion that becomes the thread is provided in the thread groove. It is preferable that a part of the convex part is overcome and locked to each other, and the other part of the second convex part is a protrusion.

  The first convex portion is composed of a high protrusion on the opening front end side of the container main body or the opening side of the cap and a lower protrusion following the second protrusion, and the second convex portion is on the front end side of the opening of the container main body. Or it has a high high convex part which becomes a projection part provided in the opening side of the cap, and a low low convex part provided on the opposite side to the high convex part, and the wide groove part is the second convex part. Relative rotation in the circumferential direction is composed of a first wide groove portion provided on the opposite side of the high convex portion and a second wide groove portion provided between the high convex portion and the low convex portion. Before, the high protrusion enters the first groove wide part, and after the relative rotation in the circumferential direction, the high protrusion maintains the state of entering the first groove wide part, and the rear end of the low protrusion Is preferably locked to the high convex portion.

  Moreover, it is preferable that the contact part with the low protrusion part of a high convex part is made into the inclined surface which protrudes gradually in the opening part rear end side of a container main body, or the bottom face side of a cap.

  Moreover, it is preferable that the low convex part is installed in the state which connects between the circumferential directions of an adjacent screw thread, and is made into the trapezoid shape which has an inclined surface on both sides of a filament direction.

  Moreover, it is preferable that the high convex part has the recessed part into which the center part was dented.

  Further, it is preferable that the thread is formed every other, every second, every third, every fourth, or every fifth of the thread groove.

  In the present invention, it is possible to provide a fastening member capable of exhibiting a loosening prevention effect without enlarging the fastening member.

In the longitudinal cross-sectional view of the sealed container according to the embodiment of the present invention, the left screw engaging portion is drawn as an end view along the lead angle (30 °), and the right screw engaging portion has a lead angle of 90 for convenience. It is the figure drawn as an end view with °. FIG. 2 is a longitudinal sectional view of a container body constituting the sealed container shown in FIG. 1, in which a left screw engaging portion is drawn as an end view along a lead angle (30 °), and a right screw engaging portion is shown with a lead angle for convenience. It is the figure drawn as an end view made 90 degrees. FIG. 2 is a longitudinal sectional view of a cap constituting the sealed container shown in FIG. 1, in which the left screw engaging portion is drawn as an end view along the lead angle (30 °), and the right screw engaging portion has a lead angle of 90 for convenience. It is the figure drawn as an end view with °. However, the illustration of the second convex portions other than the left and right sides is omitted. It is the expanded view of the screw engaging part of the container main body which comprises the sealed container shown in FIG. 1, and three sectional drawings which cut | disconnected the screw thread by three sectional lines. It is the expanded view of the screw engaging part of the cap which comprises the sealed container shown in FIG. 1, and six sectional drawings which cut | disconnected the 2nd convex part by six sectional lines. It is a general | schematic perspective view which shows the relationship between the screw thread at the time of engaging the container main body and cap which comprise the sealed container shown in FIG. 1, and a 2nd convex part, When trying to screw-connect a container main body and a cap It is a figure which shows the state of. It is a cross-sectional schematic diagram which shows the state of a screw thread and a low convex part in the state which the high protrusion of the container main body in the sealed container shown in FIG. 1 climbs over the low convex part of a cap, and mutually latches. It is a figure which shows the state by which the wall surface of the high convex part provided in the cap in the sealed container shown in FIG. 1 is made into the slope which approaches the bottom face of a cap, so that a connection part is approached. It is a cross-sectional schematic diagram which shows the state of a screw thread, a low convex part, and a high convex part in the state which the wall surface of the high convex part provided in the cap in the sealed container shown in FIG. 1 presses the wall surface of a screw thread. It is a figure which shows the modification of the sealed container which concerns on this Embodiment, and is a figure which shows the example which varied the shape of the high convex part provided in the cap. It is a figure which shows the state in the middle of performing the operation | movement of the arrow Y shown in FIG. 6 with respect to the sealed container of the modification shown in FIG. It is a figure which shows the state which performed and complete | finished the operation | movement of the arrow Y shown in FIG. 6 with respect to the sealed container of the modification shown in FIG. FIG. 13 is a diagram showing a state where the operation of the arrow Y shown in FIG. 6 is completed for the sealed container of the modification shown in FIG. 10, and is a cross-sectional view taken along line LL in FIG. 12 and two cutting lines (M -M and NN) show cross-sectional views. It is a figure which shows the further modification of the sealed container which concerns on this Embodiment, and is the figure which made the protrusion part the hemispherical thing. It is a figure which shows the further modification of the sealed container which concerns on this Embodiment, and is the figure which made the protrusion part the long thing. It is a figure which shows the further modified example of the sealed container which concerns on this Embodiment, and is a figure of what mixed the protrusion part and the inclination of an angle, and formed the protrusion part in the inclined surface and the parallel surface.

  Hereinafter, a sealed container according to an embodiment of the present invention will be described with reference to the drawings. Although this sealed container is a sealed container for storing cosmetics, it can also be applied to other sealed containers such as containers for beverages (such as plastic bottles) and food storage containers.

(Structure of sealed container)
FIG. 1 is a longitudinal sectional view of a sealed container 1 according to an embodiment of the present invention. However, in FIG. 1, the left screw engaging portion (the outer periphery of the container body 2 and the inner periphery of the cap 3 in the gap between the container body 2 and the cap 3) is an end view along the lead angle (30 °). The right screw engaging portion is drawn with a lead angle of 90 ° for convenience (the same applies to FIGS. 2 and 3). FIG. 2 is a longitudinal sectional view of the container body 2. FIG. 3 is a longitudinal sectional view of the cap 3. The protrusions such as the thread 4 of each screw engaging portion are illustrated as if they are separate members from the container body 2 and the cap 3 (the cross-hatched interval indicating the cross section is different). Is for easy understanding of the engagement relationship of the screw engaging portion. Actually, the protruding portion from the container body 2 is formed integrally with the container body 2, and the protruding portion from the cap 3 is It is formed integrally with the cap 3. Moreover, the protrusion part of each screw engaging part is represented not as a sectional view but as an end view.

  The sealed container 1 is fastened by screwing a polyolefin resin container body 2 and a polyolefin resin cap 3 that closes an opening provided in the container body 2. A screw thread 4 constituting a screw engaging portion is provided on the outer periphery of the opening of the container body 2. And the thread groove 5 which comprises a screw engaging part is provided in the inner periphery of the cap 3. As shown in FIG. The screw thread 4 and the screw groove 5 are configured to be engageable.

  As shown in FIGS. 1 and 2, the container body 2 extends in the radial direction of the accommodating portion 2a from a cylindrical accommodating portion 2a with a bottom that accommodates an object and a half of the height of the accommodating portion 2a. Further, it has a cylindrical skirt portion 2b that extends downward and covers the outer periphery of the lower half of the housing portion 2a. The outer periphery of the accommodating portion 2a above the skirt portion 2b is a screw engaging portion of the container body 2. The center of the bottom surface of the housing part 2a is a position corresponding to a position where the molten resin is press-fitted when the container body 2 is molded, and a hemispherical bulge 2c formed at the end of molding is formed at that position.

  As shown in FIGS. 1 and 3, the bottomed cylindrical cap 3 has a thick portion 3b on the side surface close to the bottom surface 3a and a side surface portion 3c on the opening side of the thick portion 3b. Yes. The inner periphery of the side surface portion 3 c becomes a screw engaging portion of the cap 3. The center of the inner bottom surface 3a of the cap 3 is a position corresponding to a position where the molten resin is press-fitted when the cap 3 is molded, and a circular recess 3d formed at the end of molding is formed at that position.

  As shown in FIGS. 1 and 3, a packing 6 is disposed on the entire bottom surface 3a so as to cover the bottom surface 3a. As shown in FIG. 1, the thread groove wide portion (details will be described later) and the thread 4 are strongly engaged by circumferential relative rotation (details will be described later), that is, the cap 3 is strongly tightened. Thus, the packing 6 in the facing portion between the opening end of the container body 2 and the bottom surface 3a of the cap 3 is crushed.

  Moreover, as shown in FIGS. 1 and 2, when the cap 3 is tightened into the container body 2 in the direction along the line direction of the thread 4 and the thread groove 5, and then both are relatively rotated in the circumferential direction. The high protrusion 11 a of the first convex portion 11 that becomes the screw thread 4 provided on the screw engaging portion of the container body 2 is provided in the screw groove 5 of the screw engaging portion of the cap 3. The protrusions 12 are engaged with each other in a state of overcoming the low protrusions 12 b of the protrusions 12. Here, in the present embodiment, the thread 4 is the same as the first convex portion 11.

  And the 1st convex part 11 used as the screw thread 4 is comprised from the high protrusion 11a of the opening front end side of the container main body 2, and the lower protrusion 11b following it. And the 2nd convex part 12 provided in the screw engaging part of the cap 3 is provided on the opening side of the cap 3, and the opposite side of the high high convex part 12 a and the high convex part 12 a (the cap 3) It has a low low convex portion 12b provided on the bottom surface 3a side). Here, when the container main body 2 and the cap 3 are relatively rotated in the circumferential direction, the high convex portion 12a (projection portion) has a function of increasing the tightening force between the two.

  Here, as described above, the container main body 2 is integrally formed with the thread 4 (the first convex portion 11). Further, the cap 3 is integrally formed with the second convex portion 12 as described above.

  FIG. 4 is a development view of the screw engaging portion of the container body 2 and a cross-sectional view of the screw thread 4. The screw threads 4 are arranged at equal intervals in the circumferential direction of the outer periphery of the opening of the container body 2. The lead angle α of the thread 4 is 30 °. FIG. 4 also shows an AA cross-sectional view of the thread 4 in the longitudinal direction (line direction). The thread 4 has a high protrusion 11a followed by a lower protrusion 11b. The upper surface 11a1 of the high protrusion 11a and the upper surface 11b1 of the low protrusion 11b are flat surfaces (in fact, a surface that is slightly curved in the circumferential direction along the outer peripheral surface of the container body 2). The high protrusion 11a and the low protrusion 11b are connected by a slope 11c. The end of the high protrusion 11a opposite to the inclined surface 11c and the outer peripheral surface of the opening of the container body 2 are connected by an inclined surface 11d. The end of the low protrusion 11b opposite to the inclined surface 11c and the outer peripheral surface of the opening of the container body 2 are connected by a wall surface 11e forming an angle of about 90 ° from the upper surface of the low protrusion 11b.

  FIG. 4 also shows a cross-sectional view taken along the line BB in the short direction of the portion of the protrusion 11b having a low thread 4. The upper surface 11b1 of the low protrusion 11b and the outer peripheral surface of the container body 2 are connected by inclined surfaces 11f and 11f. FIG. 4 also shows a C-C cross-sectional view in the short direction of the portion of the protrusion 11 a having a high thread 4. The upper surface 11a1 of the high protrusion 11a and the outer peripheral surface of the container body 2 are connected by slopes 11g and 11g. The cross section of the thread 4 shown in the BB cross sectional view and the CC cross sectional view has an isosceles trapezoidal shape. In addition, what was cut | disconnected by K1-K1 of FIG. 4 is shown as an end surface state of the screw engaging part of the right side of FIG. 1, FIG. 2, and shows the end surface state of the screw thread 4 (1st convex part). It has become.

  FIG. 5 is a development view of the screw engaging portion of the cap 3 and a cross-sectional view of the second convex portion 12. The second convex portions 12 are arranged at equal intervals in the circumferential direction of the inner periphery of the cap 3. The interval is the same as the interval at which the threads 4 shown in FIG. 4 are arranged in the circumferential direction of the outer periphery of the opening of the container body 2. Further, the lead angle β of the second convex portion 12 is 30 °.

  Further, as shown in the DD cross-sectional view (cross-sectional view in the line direction) of FIG. 5, the second convex portion 12 includes a high high convex portion 12 a provided on the opening side of the cap 3 and a high convex portion. It has a low low convex portion 12b provided on the opposite side (the bottom surface 3a side of the cap 3) from 12a. The inner peripheral surface portion of the cap 3 between the low convex portion 12 b and the bottom surface 3 a of the cap 3 and between the high convex portion 12 a and the low convex portion 12 b is a wide thread groove portion constituting the thread groove 5. The former is the first wide groove portion 5a, and the latter is the second wide groove portion 5b. The second wide groove portion 5b is connected to an elongated narrow screw groove 5c that guides the screw thread 4 in the linear direction.

  At the center of the high convex portion 12a, a recess 12e having an isosceles trapezoidal cross section composed of an inclined surface 12c and a bottom surface 12d is formed. The other upper surface 12a1 of the high convex portion 12a is a flat surface (actually a surface slightly curved in the circumferential direction along the inner peripheral surface of the cap 3). Further, the upper surface of the opening side end portion of the cap 3 of the high convex portion 12a and the inner peripheral surface of the cap 3 are connected by an inclined surface 12f. Further, the end upper surface 12a1 on the low convex portion 12b side of the high convex portion 12a and the inner peripheral surface of the cap 3 are connected by a wall surface 12g forming an angle of about 90 ° from the upper surface 12a1 of the high convex portion 12a. The upper surface 12b1 of the low convex portion 12b is a flat surface (actually, a surface slightly curved in the circumferential direction along the inner peripheral surface of the cap 3), and the upper surface 12a1, the high convex portion 12a side, and the bottom surface of the cap 3 The inner peripheral surface of the cap 3 on the 3a side is connected by slopes 12h and 12h, respectively. The low convex portion 12b has an isosceles trapezoidal cross-sectional shape along the linear direction.

  The EE cross-sectional view of FIG. 5 is also a cross-sectional view in the circumferential direction of the high convex portion 12a. The recess 12e has an isosceles trapezoidal cross section formed of a slope 12c and a bottom surface 12d, similar to the DD cross section. The upper surface 12a1 of the high convex portion 12a and the inner peripheral surfaces of the caps 3 on both sides thereof are connected by a slope 12j1 on the connecting portion 12k side and a slope 12j2 on the opposite side to the connecting portion 12k side.

  Further, as shown in the FF cross-sectional view of FIG. 5, the second convex portion 12 has an elongated connecting portion 12k that connects the high convex portion 12a and the low convex portion 12b and integrates both. The connecting portion 12k extends from the high convex portion 12a and extends to the vicinity of the bottom surface 3a while maintaining the height of the high convex portion 12a. That is, a part of the high convex part 12a forms a part of the connecting part 12k. Moreover, the upper surface of the connection part 12k and the flat upper surface 12a1 of the high convex part 12a become the same plane.

  And as shown to GG sectional drawing of FIG. 5, the connection part 12k is also integrated with the low convex part 12b which the 2nd adjacent convex part 12 has. That is, the adjacent low convex portions 12b are connected in the circumferential direction by the connecting portion 12k. The upper surface of the connecting portion 12k is a flat surface (actually, a surface that is slightly curved in the circumferential direction along the inner peripheral surface of the cap 3). The bottom surface 3 a side of the connecting portion 12 k is connected to the thick portion 3 b of the cap 3. Moreover, the upper surface of the connection part 12k and the upper surface 12b1 of the low convex part 12b are connected by the inclined surface 12n. That is, the left slope 12n and the left slope 12j in the EE sectional view form the same plane.

  The HH sectional view of FIG. 5 is a diagram showing a cross section of a gap between adjacent high convex portions 12a. That is, it is a cross-sectional view of a portion where the thread 4 of the container body 2 enters in the linear direction. A gap between adjacent high convex portions 12a is an inner peripheral surface of the cap 3, and is an elongated narrow thread groove 5c. On the straight line connecting the narrow screw groove 5c and the bottom surface 3a of the cap 3, the first wide groove portion 5a, the low convex portion 12b, the second wide groove portion 5b, and the width from the bottom surface 3a side. Narrow screw grooves 5c exist in this order.

  The JJ sectional view of FIG. 5 is a view showing a circumferential section of the second wide groove portion 5b. One second wide groove portion 5b and the upper surface of the connecting portion 12k are connected by an inclined surface 12p. The shape of the second wide groove portion 5b in this cross section is an isosceles trapezoid. When the circumferential cross section of the first wide groove portion 5a is shown, the cross section is similar to the JJ cross sectional view. In addition, what was cut | disconnected by the K2-K2 line | wire of FIG. 5 is shown as an end surface state of the screw engaging part of the right side of FIG. 1, FIG. 3, and shows the end surface state of the 2nd convex part 12 of the cap 3. Become. Further, what is cut along the line K3-K3 in FIG. 5 shows the end face on the cap 3 side of the screw engaging portion on the left side in FIGS. In addition, what shows the end surface state by the side of the container main body 2 of the left side thread engaging part of FIG. 1, FIG. 2 is cut | disconnected by the AA line of FIG.

(Opening and closing operation of the sealed container 1)
FIG. 6 is a schematic perspective view showing the relationship between the thread 4 and the second convex portion 12 when the container body 2 and the cap 3 are engaged. That is, FIG. 6 is a view showing a state when the container body 2 and the cap 3 are to be screwed together.

  The container body 2 and the cap 3 are tightened by relatively moving in the direction in which the container body 2 and the cap 3 are relatively approached and in the linear direction of the thread 4 and the thread groove 5. In this description, it is assumed that the cap 3 side, that is, the second convex portion 12 is fixed and the container body 2 side moves. That is, a state in which the screw thread 4 moves in the linear direction along the arrow direction of the arrow X will be described. However, usually, the container body 2 is fixed and the cap 3 is often operated so as to be screw-engaged with the container body 2. The screw thread 4 passes through a narrow screw groove 5c that is a gap between two high convex portions 12a. In that case, the slopes 11f, 11f, 11g, and 11g of the screw thread 4 are in contact with the slopes of the second convex part 12 (the slope 12j of the high convex part 12a and the slope 12n of the connecting part 12k), respectively. The thread 4 and the thread groove 5 are engaged. Then, the protruding portion 11a having a high thread 4 advances to the second wide groove portion 5b and further approaches the low convex portion 12b of the second convex portion 12. Then, the inclined surface 11d of the protruding portion 11a with the high thread 4 hits the inclined surface 12h on the opening side of the cap 3 of the low convex portion 12b. When the thread 4 is further advanced along the arrow X in the bumped state, the high protrusion 11a of the thread 4 moves or elastically deforms radially outward while the inclined surface 11d and the inclined surface 12h rub against each other, and / or The low convex portion 12b moves or elastically deforms radially inward. Then, the high protrusions 11a get over the low protrusions 12b and engage with each other.

  FIG. 7 is a schematic cross-sectional view showing the state of the first convex portion 11 and the low convex portion 12b of the screw thread 4 in this locked state. In this locked state, the slope 11c of the high protrusion 11a is strongly engaged with the slope 12h on the bottom surface 3a side of the cap 3 of the low protrusion 12b. In this locked state, the upper surface 11b1 of the low protrusion 11b is in contact with the upper surface 12b1 of the low convex portion 12b. In this locked state, as shown in FIG. 1, the packing 6 is pressed by the opening end of the container body 2, and the container body 2 and the cap 3 are sealed. In this locked state, the packing 6 is pressed by 0.1 mm. However, the packing 6 may be pressed by relative rotation in the circumferential direction described later.

  In order to perform the above operation, the user covers the opening of the cap 3 over the opening of the container body 2 and presses the outer bottom surface of the cap 3 with a finger or the like. The reason why the operation of rotating the cap 3 is not required is because the lead angles α and β of the screw engaging portion are 30 ° and a large rotation angle is not required. The user can recognize that this locking has occurred, that is, the high protrusion 11a has passed over the low protrusion 12b as an impact like a click feeling.

  Next, the case where relative rotation in the circumferential direction is performed from the locked state shown in FIG. 7 will be described. In this description, the operation of moving the screw thread 4 in the direction of arrow Y (circumferential direction) shown in FIG. 6 will be described as an example. In the locked state shown in FIG. 7, the wall surface 12g of the high convex portion 12a and the wall surface 11e of the screw thread 4 are not opposed to each other and are on the same plane. Therefore, the thread 4 can be moved while the inclined surface 11c of the high protrusion 11a is rubbed in the direction of the arrow Y with the inclined surface 12h on the bottom surface 3a side of the cap 3 of the low convex portion 12b. As shown in FIG. 8, the wall surface 12g is an inclined surface that approaches the bottom surface 3a as it approaches the connecting portion 12k. That is, the wall surface 12g is formed to have a slight angle α with respect to the virtual straight line V in the circumferential direction. For this reason, by the relative rotation of both in the circumferential direction, the protruding portion 11a having the high thread 4 has the first groove wide portion 5a, and the low protruding portion 11b has the second groove wide portion 5b in the direction of the arrow Y. The wall surface 12g of the high convex portion 12a is in a state of strongly pressing the wall surface 11e of the thread 4.

  FIG. 9 is a schematic cross-sectional view showing the state of the first convex portion 11, the low convex portion 12b, and the high convex portion 12a of the screw thread 4 in this pressed state. FIG. 1 also shows this state. In this pressed state, the slope 11c of the high protrusion 11a has a weaker or slightly separated engagement force with the slope 12h on the bottom surface 3a side of the cap 3 of the low convex portion 12b. However, the gap is slight and is shown as a contact state in FIG. Further, in this state, the upper surface 11b1 of the low protrusion 11b is in contact with the upper surface 12b1 of the low protrusion 12b. Furthermore, in this state, the wall surface 12g of the high convex portion 12a strongly presses the wall surface 11e of the screw thread 4 as described above. In this pressed state, as shown in FIG. 1, the packing 6 is kept pressed by the open end of the container body 2, and the container body 2 and the cap 3 are also kept sealed. Then, the wall surface 12g of the high convex portion 12a strongly presses the wall surface 11e of the screw thread 4 so that the inclined surface 11c of the high protruding portion 11a and the inclined surface 12h on the bottom surface 3a side of the cap 3 of the low convex portion 12b. The resultant force is weakened or slightly separated. That is, the high convex portion 12a increases the tightening force between the container main body 2 and the cap 3, and prevents both from loosening.

  In order to perform the movement operation described above, the user relatively rotates the cap 3 and the container body 2 in the circumferential direction from the locked state of FIG. In the example above. The container body 2 is slightly rotated in the direction of arrow Y. Further, in order to release this pressed state, the cap 3 and the container body 2 are relatively rotated in the opposite directions. In the example described above, the user slightly rotates the cap 3 in the circumferential direction with respect to the container body 2 and in the direction opposite to the arrow Y. Furthermore, in order to release the locked state and remove the cap 3 from the container body 2, the two are moved apart while relatively rotating in the opposite direction. In the above example, the user moves the container body 2 in the direction opposite to the arrow X while rotating the container body 2 in the direction opposite to the arrow Y from the above-described locked state.

(Main effects obtained by the embodiment of the present invention)
A sealed container 1 according to an embodiment of the present invention is configured to screw-connect a container body 2 and a cap 3 that closes an opening provided in the container body 2, and includes a thread 4 provided on the container body 2 side, The thread groove 5 provided on the cap 3 side is configured to be engageable. The screw groove 5 has a tightening force between the screw groove wide portions 5a and 5b whose width in the circumferential direction is locally wide and the container body 2 and the cap 3 are relatively rotated in the circumferential direction. It has the high convex part 12a to increase. Since the sealed container 1 can accommodate all such configurations in the screw engaging portion, it is possible to provide the sealed container 1 capable of exhibiting a loosening prevention effect without increasing the size of the sealed container 1.

  When the sealed container 1 is tightened with the cap 3 into the container body 2 in the direction along the linear direction of the thread 4 and the thread groove 5, the thread 4 enters the wide thread groove portions 5a and 5b, and The cap 3 and the container main body 2 are rotatable relative to each other in the circumferential direction. Here, when the container body 2 and the cap 3 are relatively rotated in the circumferential direction in a state where the thread 4 is inserted into the wide thread groove portions 5 a and 5 b, the thread groove wide portions 5 a and 5 b and the thread thread 4 A strong locking force is generated between them. This is because the wall surface 12g of the high convex portion 12a is inclined in the circumferential direction, and the wall surface 12g strongly presses the wall surface 11e of the screw thread 4.

  Further, a packing 6 is disposed between the open end of the container body 2 and the bottom surface 3a of the cap 3, and the packing is made in a state where the thread groove wide portions 5a, 5b and the thread 4 are strongly engaged by relative rotation in the circumferential direction. 6 is in a crushed state. Therefore, the sealed container 1 has a higher sealing degree. Further, by covering the entire surface of the bottom surface 3a of the cap 3 with the packing 6, the recessed portion 3d formed at the end of the molding of the cap 3 can be hidden, and the sealed container 1 can be made beautiful. Further, the sealing 6 can provide high sealing performance even if the rotational operation for screw connection is as small as 30 ° to 40 °, for example.

  Further, when the cap 3 is tightened into the container body 2 in the direction along the linear direction of the thread 4 and the thread groove 5, the thread 4 gets over the low convex portion 12 b provided in the thread groove 5 and They are locked together. Therefore, the sealed state of the sealed container 1 can be realized without performing the moving operation in the arrow Y direction shown in FIG. However, it is considered that it is difficult to improve the sealed state of the sealed container 1 only by locking the screw thread 4 and the low convex portion 12b, and the locking portion of the screw thread 4 and the low convex portion 12b is worn or the like. Therefore, the relative rotation of the two in the direction of the arrow Y is performed, and the wall surface 12g of the high convex portion 12a and the wall surface 11e of the screw thread 4 strongly press each other. It is preferable from the viewpoint of improving the sealing performance of the sealed container 1.

  Further, the screw thread 4 is composed of a high protrusion 11a on the front end side of the opening of the container body 2 and a lower protrusion 11b following the high protrusion 11a, and the second convex part 12 is provided on the opening side of the cap 3 The high convex portion 12a and the low convex portion 12b provided on the opposite side of the high convex portion 12a are provided. The wide groove portions 5a and 5b are formed between the first wide groove portion 5a, the high convex portion 12a, and the low convex portion 12b provided on the opposite side of the high convex portion 12a of the second convex portion 12. The high protrusion 12a enters the first wide groove portion 5a before the relative rotation in the circumferential direction, and the high protrusion after the relative rotation in the circumferential direction. The state where the portion 12a enters the first wide groove portion 5a is maintained, and the wall surface 11e of the low protrusion 11b is locked to the high convex portion 12a. Therefore, the structure of the sealed container 1 that can move in the direction of the arrow Y shown in FIG. 6 and that has improved sealing performance can be realized.

  Moreover, the low convex part 12b is installed in the state which connects the adjacent screw thread 4, and is made into the trapezoid shape which has the inclined surfaces 12h and 12h on both sides of a filament direction. Therefore, the operation when the screw thread 4 gets over the low convex portion 12b can be made smooth.

  Moreover, the high convex part 12a has the recessed part 12e in which the center part was dented. Therefore, sink marks at the time of molding the cap 3 can be reduced, and molding accuracy can be increased.

  Moreover, since the lead angles α and β of the screw thread 4 and the screw groove 5 are 30 °, when the sealed container 1 is opened and closed, the rotational operation for screw connection is as small as about 40 ° in the circumferential direction. can do. Thus, since there is little rotation operation, sealing of the sealed container 1 is realizable by putting the cap 3 on the container main body 2, and pressing it down.

  Further, when the screw thread 4 gets over the low convex portion 12b, the user can recognize it by the impact of the click feeling, so that the user confirms that the sealed container 1 is sealed and the seal is released. it can.

(Other forms)
Although the sealed container 1 in the embodiment of the present invention has been described above, various modifications can be made without departing from the gist of the present invention.

  A sealed container 1 according to an embodiment of the present invention is configured to screw-connect a container body 2 and a cap 3 that closes an opening provided in the container body 2, and includes a thread 4 provided on the container body 2 side, The thread groove 5 provided on the cap 3 side is configured to be engageable. The screw groove 5 has a tightening force between the screw groove wide portions 5a and 5b whose width in the circumferential direction is locally wide and the container body 2 and the cap 3 are relatively rotated in the circumferential direction. It has the high convex part 12a to increase. When the cap 3 is tightened into the container body 2 in the direction along the linear direction of the thread 4 and the thread groove 5, the thread 4 enters the wide groove 5a and 5b, and the cap 3 and the container body 2 is rotatable relative to the circumferential direction.

  However, the screw thread 4 may be provided on the cap 3 side, and the screw groove 5 may be provided on the container body 2 side.

  Further, when the container body 2 and the cap 3 are rotated relative to each other in the circumferential direction in a state where the screw thread 4 is inserted in the wide thread groove portions 5a and 5b, the sealed container 1 is screwed with the wide thread groove portions 5a and 5b. A locking force with the mountain 4 is generated. However, other forms are possible. For example, instead of generating a locking force between the thread groove wide portions 5a and 5b and the screw thread 4, the above-described locking is formed by the concave and convex portions that are formed in the screw engaging portion but are not involved in the screw coupling. It is also possible to generate force. Further, when the cap 3 is tightened into the container body 2 in the direction along the linear direction of the thread 4 and the thread groove 5, the thread 4 gets over the low convex portion 12 b provided in the thread groove 5 and The locking force similar to that described above may be generated only by the locked structure. That is, it is not necessary to have a configuration that allows relative rotation in the circumferential direction.

  Further, a packing 6 is disposed between the open end of the container body 2 and the bottom surface 3a of the cap 3, and the packing is made in a state where the thread groove wide portions 5a, 5b and the thread 4 are strongly engaged by relative rotation in the circumferential direction. 6 is in a crushed state. However, the packing 6 is not essential and can be omitted. For example, the bottom surface 3a of the cap 3 and the open end of the container body 2 may be in close contact to realize sealing.

  Further, when the cap 3 is tightened into the container body 2 in the direction along the linear direction of the thread 4 and the thread groove 5, the thread 4 gets over the low convex portion 12 b provided in the thread groove 5 and They are locked together. However, the low convex portion 12b may not be provided. For example, the wall surface 12g of the high convex portion 12a and the wall surface 11e of the screw thread 4 may be brought into contact with each other, and the cap 3 and the container body 2 may be locked only by pressing both. Further, in the present embodiment, the entire thread 4 is the first protrusion 11, but a part of the thread 4 may be the first protrusion 11.

  Moreover, the low convex part 12b is installed in the state which connects the adjacent screw thread 4, and is made into the trapezoid shape which has the inclined surfaces 12h and 12h on both sides of a filament direction. However, the inclined surface 12h may not be provided, or a curved surface may be used instead of the inclined surface 12h. Further, the inclined surface 12h may be provided only on one side in the linear direction of the low convex portion 12b.

  Moreover, the high convex part 12a has the recessed part 12e in which the center part was dented. However, the upper surface of the high convex portion 12a may be a flat surface over the entire area. Further, as shown in FIG. 8, the wall surface 12g is an inclined surface having an angle α with respect to the circumferential direction. However, the wall surface 12g is not an inclined surface but the wall surface 11e is an inclined surface, and the first convex portion 11 is illustrated in FIG. When rotating in the direction of arrow Y of 6, the close strength with the wall surface 12g may be increased. Moreover, you may make it increase press strength by making both wall surface 11e and 12g into a slope.

  The wall surface 11e of the screw thread 4 forms an angle of about 90 ° from the upper surface of the low protrusion 11b, and the wall surface 12g of the high convex portion 12a that presses against the wall surface 11e is about 90 ° from the upper surface of the high convex portion 12a. The angle is made. However, for example, the portion where the low protrusion 11b of the high convex portion 12a comes into contact may be made as such, and the base side which is the other portion may be an inclined surface gradually approaching the low convex portion 12b.

  Further, the same number of screw threads 4 as the screw grooves 5 are formed. However, for example, the thread 4 may be formed every other, every second, every third, every fourth, or every fifth of the thread groove 5. Further, at least three screw threads 4 may be provided at intervals of 30 ° or more and 150 ° or less of the outer periphery of the container body 2. By reducing the number of the threads 4, the moldability of the container body 2 is improved. For the same reason, the second protrusions 12 may be formed every other screw thread 4, every second, every third, every fourth, or every fifth. Moreover, it is good also as having 2 or more 2nd convex parts 12 with the space | interval of 30 degrees or more and 150 degrees or less of the inner periphery of the cap 3. As shown in FIG.

  Moreover, in this Embodiment, although lead angle (alpha) and (beta) of the sealed container 1 is 30 degrees, it is not limited to this angle. However, by setting the lead angles α and β to 10 ° or more, the number of rotations (rotation angles) for attaching and detaching the cap 3 to the container main body 2 can be reduced, and the use can be facilitated. Further, by setting the lead angles α and β to 80 ° or less, the hermetic container 1 can satisfactorily realize the screw connection by the engagement between the screw thread 4 and the screw groove 5 and can increase the bonding force. .

  Further, the packing 6 covers the entire area of the bottom surface 3a of the cap 3, but the packing 6 may be arranged in a ring shape only in the portion that presses against the opening end of the container body 2.

  Further, when the screw thread 4 gets over the low convex portion 12b, it is not always necessary to obtain the click feeling. Moreover, even if an impact is obtained, the impact does not have to be a click feeling. Furthermore, the material of the cap 3 and the container body 2 is a polyolefin resin, but other materials may be employed. The material is preferably a resin material, but other materials such as a metal material, a glass material, and wood may be used. Here, any one of the container main body 2 and the cap 3 can be made of a material having elasticity that can change its shape relatively easily, such as a resin. When one of the container body 2 and the cap 3 is made of resin in this way, the cap 3 is made of a soft resin such as urethane or silicone in consideration of the deflection during the opening / closing operation of the sealed container 1, and the container The main body 2 is preferably a metal material, a glass material, or the like.

  Further, when the user uses the sealed container 1 without carrying it, the user performs only the operation of the arrow X to ensure the sealing property of the sealed container 1, carries the sealed container 1, and is given an impact to the sealed container 1. When used in a state, the usage can be devised, for example, by securing the sealing property of the sealed container 1 higher by performing the operations of the arrows X and Y.

  FIG. 10 is a view showing a modified example of the sealed container 1 according to the present embodiment in which only the shape of the high convex portion 12a is different from that of the sealed container 1. The members or portions corresponding to the respective members or portions of the sealed container 1 are denoted by the same reference numerals, and the description thereof is omitted. On the wall surface 12g of the high convex portion 12a, a rounded protruding portion 12m protruding at a maximum of 0.15 mm in a direction orthogonal to the wall surface 12g is formed at the end opposite to the connecting portion 12k. . Further, the wall surface 12g has an angle α shown in FIG. 8 of 0 °.

  FIG. 11 is a diagram showing a state in the middle when the above-described operation of the arrow Y is performed on the sealed container of this modified example. The wall surface 11e of the screw thread 4 is in the middle of getting over the protruding portion 12m, and the wall surface 11e and the protruding portion 12m are pressed against each other. In this state, the crushing amount of the packing 6 is 0.25 mm (the crushing amount of the packing 6 when the operation of the arrow X is finished is 0.1 mm).

  12 and 13 are views showing a state where the operation of the arrow Y described above is performed on the sealed container of this modified example and finished. The wall surface 11e of the screw thread 4 gets over the protruding portion 12m, and the wall surface 11e and the wall surface 12g are in contact with each other. In this state, the collapse amount of the packing 6 returns to 0.1 mm. When the user changes from the state shown in FIG. 11 to the state shown in FIG. 12, that is, when the wall surface 11e of the screw thread 4 descends from the protruding portion 12m, the user feels a click feeling as an impact between the wall surface 11e and the wall surface 12g. Can feel. 13 shows an LL cross-sectional view of FIG. 12 and a cross-sectional view taken along two cutting lines of the protruding portion 12m. The projecting portion 12m extends to the slope 12j2 side of the wall surface 12g, and the portion of the cutting line MM is the highest.

  As a further modification of the sealed container of the modification shown in FIGS. 10 to 13, the portion corresponding to the protruding portion 12m is the right end of FIG. 8 of the inclined wall surface 12g of the high convex portion 12a shown in FIG. The thing currently formed in the side can be mentioned. With such a configuration, in the state where the operation of the arrow Y described above is completed for the sealed container, the amount of crushing of the packing 6 can be increased to increase the sealing degree of the sealed container and the click feeling can be increased. Can be given.

  Further, the projecting portion 12m may be hemispherical as shown in FIG. 14, or may be elongated as shown in FIG. Further, when the projecting portion 12m does not have a click feeling when it is completely closed and is simply intended to increase the sealing degree, the installation position of the projecting portion 12m is connected to the connecting portion 12k as shown in FIG. It may be on the near side.

  Furthermore, it is good also as what mixed the protrusion part 12m and the inclination of angle (alpha). FIG. 16 shows an example of this. In the example of FIG. 16, the protrusion 12m is formed of an inclined surface 12g1 and a parallel surface 12g2. In this example, a click feeling does not occur, but it is easy to maintain a high sealing degree.

DESCRIPTION OF SYMBOLS 1 Sealed container 2 Container main body 3 Cap 4 Screw thread 5 Screw groove 5a 1st thread groove wide part 5b 2nd thread groove wide part 6 Packing 11 1st convex part 11a High protrusion 11b Low protrusion 12 2nd Convex part 12a High convex part (protrusion part)
12b Low convex part 12e Concave part

Claims (5)

In a sealed container that is fastened by screwing a container body and a cap that closes an opening provided in the container body,
The thread body of the screw engaging portion provided on one side of the container body and the cap is configured to be engageable with the screw groove of the screw engaging portion provided on the other side. When the width of the thread groove is increased locally in the circumferential direction and the container body and the cap are relatively rotated in the circumferential direction, the tightening force between the two is increased or / and the click feeling is increased. And when the cap is tightened into the container body in a direction along the direction of the thread and the thread groove, the thread enters the wide thread groove, and A sealed container characterized in that the cap and the container body are rotatable relative to each other in the circumferential direction. The sealed container according to claim 1,
In the state where the thread is in the thread groove wide part, the container body and the cap are relatively rotated in the circumferential direction to generate a locking force between the thread groove wide part and the thread. A sealed container characterized. The sealed container according to claim 1 or 2,
A packing is disposed between the opening end of the container body and the bottom surface of the cap, and the packing is crushed in a state where the thread groove wide portion and the screw thread are strongly engaged by the relative rotation in the circumferential direction. A sealed container characterized in that The sealed container according to any one of claims 1 to 3,
When the cap is fastened to the container body in a direction along the linear direction of the thread and the thread groove, a part or all of the first convex portion that becomes the thread is provided in the thread groove. A sealed container, wherein a part of the second convex part is overcome and locked together, and the other part of the second convex part is the protrusion. The sealed container according to any one of claims 1 to 4,
The sealed container according to claim 1, wherein the screw thread is formed every other, every second, every third, every fourth, or every fifth of the thread groove.

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