JP2024000788A - One piece cap and combination between the same and container - Google Patents

Abstract

[Problem] To provide a new one-piece cap in which a top cover 8 is held sufficiently and securely in an open position. [Solution] An opening 80 having a frame on all four sides is formed on the outer surface of a mounting wall 4 on the hinged side, and an engaging means 76 is provided on a lower frame 82a or an upper frame 82b of the opening 80, and an upper protruding piece 84 that protrudes radially outward is formed on the outer surface of the top cover 8, and an engaged means 78 is provided on the upper or lower surface of the upper protruding piece 84, so that when the top cover 8 is rotated to the open position, the engaged means 78 climbs over the engaging means 76 and enters the inside of the mounting wall 4 from the opening 80, and then engages with the engaging means 76, and the outer surface of the skirt wall 52 is supported by the outer surface of the upper frame 82b. [Selected Figure] Figure 2

Description

The present invention relates to a one-piece cap that is attached to the mouth and neck of a container, and a combination of the one-piece cap and the container.

The one-piece cap, which consists of a cylindrical mounting wall that is attached to the mouth and neck of the container by screwing or capping, and a top lid that is hinged to this mounting wall, can hold various contents such as beverages and medicines. It is widely used as a cap for containers.

As an example of a one-piece cap, Patent Document 1 below includes a cylindrical mounting wall that is attached to the mouth and neck of a container, and an upper lid that has a top wall and a skirt wall that hangs down from the periphery of the top wall. , the top cover is hingedly connected to the mounting wall and the skirt wall by a strap band, so that the top cover can freely pivot between a closed position that covers the top surface of the mounting wall and an open position that exposes the top surface of the mounting wall. When the top cover is pivoted to the open position, the engaging means provided on the mounting wall and the engaged means provided on the top cover engage, and the top cover is rotated from the open position. A one-piece cap is disclosed that is prevented from being pivoted toward the closed position. Further, in this one-piece cap, a female thread is formed on the inner peripheral surface of the mounting wall, and in the one-piece cap disclosed in Patent Document 1, a male thread is formed on the outer peripheral surface of the mouth and neck. used in combination with

According to the one-piece cap described above, when the top lid is turned to the open position and the contents are discharged, the contents are easily removed because the top cover is prevented from being turned from the open position to the closed position. Can be discharged.

Patent No. 4846466

In the one-piece cap disclosed in Patent Document 1, the engaging means is an extending piece that extends upward from the upper surface of the mounting wall, and the engaged means extends radially outward from the outer surface of the top cover. When the top cover is turned to the open position, the top cover is turned over and the outer surface of the projecting piece and the outer surface of the extension piece come into contact with each other back to back. is prevented from being pivoted from the open position toward the closed position, so even a slight external force applied to the top cover can cause the top cover to accidentally pivot from the open position to the closed position. There is a risk of it getting lost. When the top lid was pivoted from the open position to the closed position while the contents were being discharged, the user placed his or her mouth directly against the upper end of the mounting wall of the one-piece cap and drank the beverage contained in the container. In some cases, the lower end of the skirt wall of the top lid touches the user's nose, which is bothersome. Furthermore, if the user is discharging the contents into a plate or the like, the contents will be splashed onto the top lid, more specifically, the inner surface of the top wall, which is undesirable in terms of use and hygiene.

The present invention has been made in view of the above facts, and its main technical problem is to provide a new and improved one-piece cap in which the top lid is held sufficiently securely in the open position.

As a result of extensive studies, the present inventor formed an opening having a four-sided frame on the outer surface of the mounting wall on the hinged side, provided the engaging means on the lower frame or the upper frame of the opening, and also provided the engagement means on the lower frame or upper frame of the opening. An upper protruding piece that protrudes radially outward is formed on the outer surface, and an engaged means is provided on the upper or lower surface of the upper protruding piece, and when the top cover is turned to the open position, the engaged means is engaged. The above-mentioned main technical problem can be solved by configuring the skirt wall to be engaged with the engaging means after passing over the means and entering the inside of the mounting wall through the opening, and at the same time, the outer surface of the skirt wall is supported by the outer surface of the upper frame. We found that it is possible to solve the problem.

That is, according to the present invention, a one-piece cap that solves the above-mentioned main technical problem includes a cylindrical mounting wall that is attached to the mouth and neck of a container, a top wall, and a skirt wall that hangs down from the periphery of the top wall. an upper lid having a
The top cover is hingedly connected to the mounting wall and the skirt wall by a strap band, so that the top cover can freely pivot between a closed position that covers the top surface of the mounting wall and an open position that exposes the top surface of the mounting wall. can be,
When the top cover is pivoted to the open position, the engaging means provided on the mounting wall and the engaged means provided on the top cover engage, and the top cover moves from the open position to the closed position. In a one-piece cap that is prevented from being pivoted toward the
An upper protruding piece that protrudes radially outward is formed on the outer surface of the upper lid, and the engaged means is provided on the upper or lower surface of the upper protruding piece,
The engaged means includes a protrusion piece that protrudes radially outward from the outer surface of the upper lid, and a protrusion is formed on the upper or lower surface of the upper protrusion piece,
When the top cover is pivoted to the open position, the engaged means passes over the engaging means and enters the inside of the mounting wall through the opening, and then is engaged with the engaging means. A one-piece cap is provided, characterized in that the outer surface of the skirt wall is supported by the outer surface of the upper frame.

Preferably, the engagement means is an extending piece extending upwardly from the upper surface of the lower frame of the opening or downwardly from the lower surface of the upper frame. Preferably, the engaged means is a protrusion provided on the upper or lower surface of the upper protruding piece. When the engaging means is provided in the lower frame of the opening, the engaged means is formed on the upper surface of the upper protruding piece, and the lower surface of the upper protruding piece extends radially outward. It is best to slope upwards. Preferably, the radially outer end of the engaged means is located on the circumference of an imaginary circle that defines the outer peripheral surface of the mounting wall or inside the imaginary circle. It is preferable that both sides of the engaged means in the circumferential direction are closed by protective walls. Preferably, the outer surface of the skirt wall is formed with a lower protruding piece that protrudes radially outward below the engaged means. In this case, when the upper lid is pivoted from the closed position to the open position, it is preferable that the lower projecting piece abuts the outer surface of the mounting wall and uses this as a pivot point. It is preferable that an upper surface of the mounting wall is formed with an upwardly thickened bulge, and that the lower protrusion is brought into contact with the outer surface of the bulge. Furthermore, the radially outer end of the lower projecting piece is preferably located on the circumference of an imaginary circle that defines the outer peripheral surface of the mounting wall or inside the imaginary circle.

According to the present invention, the container and the one-piece cap are combined, and a male thread is provided on the outer peripheral surface of the mouth and neck of the container, and a male thread is provided on the inner peripheral surface of the mounting wall. Female threads are formed to be joined together, and the one-piece cap moves upward with respect to the mouth and neck of the container and reaches a raised position due to the threaded engagement of the female thread and the male thread. When the one-piece cap reaches the raised position, the locking means formed on the inner peripheral surface of the mounting wall locks with the locking means formed on the outer peripheral surface of the mouth and neck of the container. A combination is also provided in which the top cover is held and the top cover is pivotable relative to the mounting wall.

According to the one-piece cap of the present invention, when the top lid is turned to the open position, the engaged means of the top lid overcomes the engaging means of the mounting wall and enters the inside of the mounting wall from the opening, and then the engaging means The upper lid is held sufficiently securely in the open position by being engaged with the upper lid and by supporting the outer surface of the skirt wall of the upper lid by the outer surface of the upper frame of the opening formed in the mounting wall.

1 is a front perspective view of a preferred embodiment of a one-piece cap constructed in accordance with the present invention; FIG. FIG. 2 is a perspective view of the one-piece cap shown in FIG. 1 when viewed from the back side. FIG. 2 is a front view of the one-piece cap shown in FIG. 1; FIG. 2 is a rear view of the one-piece cap shown in FIG. 1; FIG. 2 is a right side view of the one-piece cap shown in FIG. 1; FIG. 2 is a sectional view taken along line AA of the one-piece cap shown in FIG. 1. FIG. 2 is a sectional view taken along line BB of the one-piece cap shown in FIG. 1. FIG. 2 is a plan view of the mouth and neck of the container to which the one-piece cap shown in FIG. 1 is attached. FIG. 9 is a front view of the mouth and neck of the container shown in FIG. 8; FIG. 9 is a rear view of the mouth and neck of the container shown in FIG. 8; FIG. 9 is a right side view of the mouth and neck of the container shown in FIG. 8; Cross-sectional view for explaining the opening process of the one-piece cap shown in Figure 1 Cross-sectional view for explaining the opening process of the one-piece cap shown in Figure 1 Cross-sectional view for explaining the opening process of the one-piece cap shown in Figure 1 Cross-sectional view for explaining the opening process of the one-piece cap shown in Figure 1

Hereinafter, a one-piece cap constructed in accordance with the present invention will be described in further detail with reference to the accompanying drawings, which illustrate preferred embodiments.

To explain with reference to FIGS. 1 and 2, a one-piece cap, designated as a whole by number 2, is integrally molded by injection molding of a suitable synthetic resin material, and is attached to the mouth and neck of a container, which will be described later. It includes a cylindrical mounting wall 4 and an upper lid 8 hingedly connected to the mounting wall 4 by a strap band 6. In the following description, unless otherwise specified, the surface viewed from the side opposite to the hinged side, that is, the surface shown in FIG. The surface shown in FIG. 4 is the "back side" and the surface shown in FIG. 5 is the "right side surface."

Referring to FIGS. 3 to 5 as well as FIGS. 1 and 2, the mounting wall 4 has a cylindrical shape, and a breakable line 10 extending in the circumferential direction is formed approximately in the middle in the vertical direction, and the mounting wall 4 has a cylindrical shape. 4 is divided into a main portion 12 above the breakable line 10 and a tamper-evident hem 14 below the breakable line 10. In the illustrated embodiment, the breakable line 10 includes a plurality of slits (kerfs) 16 extending circumferentially at intervals in the circumferential direction and a plurality of first bridge portions 18 remaining between the slits 16. The tamper-evident hem portion 14 is connected to the main portion 12 via a plurality of first bridging portions 18. As will be mentioned later, the breakable line 10 is not horizontal, but is vertically displaced at predetermined positions in the circumferential direction.

Mainly referring to FIGS. 3 to 5, the front and back surfaces of the main portion 12 of the mounting wall 4 have upper edges that are continuously displaced downward in the circumferential direction over a required angular range. A first recess 20 and a second recess 22 are formed. The circumferential width of the first recess 20 formed on the front side is wider than the circumferential width of the second recess 22 formed on the back side. The circumferential center positions of the second recesses 22 are located on opposite sides in the diametrical direction. The first recess 20 is longer than the second recess 22 in the vertical direction, and therefore the upper end edge of the main part 12 in the first recess 20 is longer than the main part 12 in the second recess 22. It is located below the upper edge of the portion 12. As shown in FIG. 4, one end of the strap band 6 is connected to the upper surface of the main portion 12 in which the second recess 22 is formed. On the outer circumferential surface of the main portion 12, anti-slip knurls 24 are formed which are constituted by irregularities that are alternately present when viewed in the circumferential direction. As shown in FIG. 5 (see also FIGS. 1 and 2), the anti-slip knurling 24 is not formed in the circumferential center angle region of both left and right sides of the outer peripheral surface of the main portion 12. A single protrusion 26 extending linearly in the vertical direction is formed in this angular region. Further, as shown in FIG. 4, the anti-slip knurling 24 is not formed even in the central angle region in the circumferential direction of the back surface of the outer peripheral surface of the main portion 12. An opening is formed in this angular region, which will be discussed later. To explain with reference to FIGS. 6 and 7, at the upper end of the inner circumferential surface of the main portion 12, more specifically, at the upper end of the angular region excluding the angular region where the first recess 20 is formed, A reinforcing ridge 28 is formed extending along the edge. The reinforcing protrusion 28 is cut off at a predetermined position, and the cutout portion is designated by the number 29 as a cutout portion. A locking means 30 is formed below the reinforcing ridge 28, more specifically below a portion of the reinforcing ridge 28 adjacent to one side of the circumferential direction of the defective portion 29. In the illustrated embodiment, the locking means 30 is a radially inwardly projecting projection. Although not clearly shown in the drawings, two locking means 30 are formed on the inner peripheral surface of the main portion 12, and the two locking means 30 are arranged on opposite sides in the diametrical direction. There is. A female thread 32 is formed below the locking means 30. A plurality of locking protrusions 34 extending in the circumferential direction are arranged on the inner circumferential surface of the tamper-evident hem 14 at intervals in the circumferential direction.

Referring to FIG. 4, which shows the back side of the one-piece cap 2, the lower end of the main portion 12 of the mounting wall 4 in the specific angle area indicated by numeral 36 in the figure is displaced upward. Two recesses 38 are formed at intervals in the circumferential direction. Each of the two recesses 38 is substantially vertical on one side in the circumferential direction, but the other side in the circumferential direction is gently inclined upward toward the one side in the circumferential direction. As a result, the lower end of the main portion 12 is provided with a locking surface 40 located on one side of the recess 38 in the circumferential direction and extending substantially vertically, and an upper inclined surface 42 located on the other side of the recess 38 in the circumferential direction. . On the other hand, in the tamper-evident hem portion 14 of the specific angle region 36, two convex portions 44 whose upper ends are displaced upward are formed at intervals in the circumferential direction. Each of the two convex portions 44 is substantially vertical on one side in the circumferential direction, but the other side in the circumferential direction is gently inclined upward toward the one side in the circumferential direction. As a result, the upper end of the tamper-evident hem 14 has a locked surface 46 located on one circumferential side of the convex portion 44 and extending substantially vertically, and a lower inclined surface located on the other circumferential side of the convex portion 44. A surface 48 is provided. The protrusion 44 corresponds to the recess 38, and in the state shown in FIG. 4, the protrusion 44 is received in the recess 38. As can be understood by referring to FIG. 3 in conjunction with FIG. 4, the above-mentioned specific angle area 36 is also provided on the front side of the one-piece cap 2.

Referring again to FIGS. 3 to 5, the upper lid 8 includes a top wall 50 and a cylindrical skirt wall 52 that hangs downward from the outer peripheral edge of the top wall 50. As shown in FIG. 4, the other end of the strap band 6 is connected to the lower end of the back (outer surface) of the skirt wall 52, and the upper cover 8 is placed in the closed position (shown in FIG. 12-2) covering the top surface of the mounting wall 4. state) and an open position (state shown in FIG. 12-4) in which the top surface of the mounting wall 4 is exposed. In the illustrated embodiment, the upper lid 8 is brought to the open position by rotating approximately 200 degrees in the lid opening direction (clockwise in FIGS. 12-1 to 12-4) from the closed position. As understood by also referring to FIGS. 1 and 2, the top wall 50 is generally circular, but the outer diameter is somewhat reduced on the back side. An angular region in the outer peripheral edge of the top wall 50 where the outer diameter is not reduced constitutes an upper flange portion 54 . Referring to FIGS. 6 and 7, a cylindrical seal piece 56 that hangs downward is provided on the inner outer peripheral edge of the top wall 50, and a relatively A small annular protrusion 58 is formed.

Referring to FIGS. 1 and 2 together with FIGS. 3 to 5, an arc-shaped auxiliary protrusion 60 is formed at the lower end of the side surface (outer surface) of the skirt wall 52 and extends continuously in the circumferential direction. has been done. One auxiliary protrusion 60 is arranged on each side in the diametrical direction. The auxiliary protrusions 60 contribute to increasing the rigidity of the skirt wall 52. A large hanging wall 62 having an arc shape is provided on the front side of the skirt wall 52 and hangs down beyond the lower edge of the side surface of the skirt wall 52. The large hanging wall 62 is located in the first recess 20 when the top lid 8 is in the closed position, thereby stably holding the top lid 8 in the closed position. An arc-shaped lower flange 64 is formed at the lower end of the outer peripheral surface of the large hanging wall 62 and projects radially outward. Reinforcing protrusions 66 extending in the vertical direction are also formed on both circumferential edges of the outer peripheral surface of the large hanging wall 62 . The lower end of the reinforcing protrusion 66 is connected to the upper surface of both circumferential ends of the lower flange 64. Two breakable second bridge portions 67 connected to the upper surface of the mounting wall 4 are provided on the lower surfaces of the auxiliary protrusion 60 and the lower collar portion 64, respectively, at intervals in the circumferential direction. There is. Referring to FIG. 6, the skirt wall 52 has an arc-shaped upper protrusion 68 extending in the circumferential direction at the lower end of the inner surface, and a first arc-shaped protrusion 68 extending in the circumferential direction is provided at the upper end of the inner surface of the large hanging wall 62. Lower protrusions 70 are formed respectively. Although not necessarily clearly illustrated, the upper protrusion 68 extends longer in the circumferential direction than the first lower protrusion 70. Here, a protrusion is provided at the same vertical position as the first lower protrusion 70 on the diametrically opposite side of the region where the first lower protrusion 70 is formed, that is, on the back side of the skirt wall 52. It is formed. This ridge is designated by the number 72 as the second lower ridge. As can be understood by referring to FIG. 4 together with FIG. 6, there is also an arc-shaped small hanging wall 74 on the opposite side in the diametrical direction from the large hanging wall 62, which hangs downward beyond the lower edge of the side surface of the skirt wall 52. The second lower protrusion 72 is formed on the inner surface of the small hanging wall 74.

Referring to FIG. 4, the strap bands 6 are flexible string-like, and two strap bands 6 are provided at intervals in the circumferential direction. The two strap bands 6 each extend upward from the top surface of the mounting wall 4, then extend substantially horizontally in a direction close to each other, and then are bent upward into a U-shape and then separated from each other. The skirt wall 52 extends substantially horizontally in the direction of the skirt wall 52, and then extends upwardly to connect to the lower end of the outer surface of the skirt wall 52. Therefore, each of the two strap bands 6 is in a line-symmetric positional relationship with respect to a straight line extending in the axial direction at the center in the circumferential direction.

Continuing the explanation with reference to FIGS. 12-2 and 12-4 as well as FIGS. 4 and 5, the mounting wall 4 is provided with an engaging means 76, and the upper lid 8 is provided with an engaged means 78. When the upper lid 8 is turned to the open position, the engaging means 76 and the engaged means 78 are engaged, and the upper lid 8 is prevented from being turned from the open position toward the closed position. In the one-piece cap of the present invention, an opening 80 having a four-sided frame is formed on the outer surface (that is, the back surface) of the mounting wall 4 on the hinged side, and the engaging means 76 is connected to the lower frame 82a or the upper side of the opening 80. It is provided in the frame 82b. An upper protruding piece 84 that protrudes radially outward is formed on the outer surface of the upper lid 8, and the engaged means 78 is provided on the upper or lower surface of the upper protruding piece 84. In the illustrated embodiment, one opening 80 and one upper protruding piece 84 are formed. The opening 80 and the upper protruding piece 84 are arranged in alignment in the circumferential direction at the center position of the two strap bands 6 in the circumferential direction. The opening 80 has a horizontally long rectangular shape and penetrates in the radial direction, and the engagement means 76 is an extending piece that extends upward from the circumferential center of the upper surface of the lower frame 82a of the opening 80. Therefore, the free end edge of the engagement means 76 is elastically displaceable in the radial direction. The engaged means 78 is a protrusion provided on the upper surface of the upper protrusion piece 84 . The engaged means 78 extends in the circumferential direction at the extending end of the upper surface of the upper projecting piece 84 . The lower surface of the upper protruding piece 84 is slanted upwardly toward the outside in the radial direction. Both circumferential sides of the upper protruding piece 84 are closed by protective walls 88 connected to the outer surface of the upper lid 8 (see also FIG. 2). The protective wall 88 has a triangular shape, and its outer surface slopes radially inward and circumferentially outward. The radially outer end of the upper protruding piece 84 is located inside a virtual circle c (indicated by a two-dot chain line in FIG. 5) that defines the outer peripheral surface of the mounting wall 4. The radially outer end of the upper protruding piece 84 may be located on the circumference of the virtual circle c.

A lower protruding piece 92 is also formed on the outer surface of the skirt wall 52 and protrudes radially outward below the engaged means 78 . As shown in FIG. 5, the radially outer end of the lower protruding piece 92 is also located inside the virtual circle c that defines the outer peripheral surface of the mounting wall 4. The radially outer end of the lower protruding piece 92 may be located on the circumference of the virtual circle c. Since the radially outer end of the upper protruding piece 84 and the radially outer end of the lower protruding piece 92 are located on the circumference of the virtual circle c or inside the virtual circle c, the one-piece cap 2 can be formed by an existing capping device as described below. It can be attached to the mouth and neck of the container. Since the capping device grips the anti-slip knurl 24 formed on the outer peripheral surface of the cap, when the radially outer ends of the engaged means 78 and the lower protruding piece 92 are located outside the virtual circle c, the capping device This is because the device interferes with the engaged means 78 and the lower protruding piece 92. In the illustrated embodiment, when the upper lid 8 is pivoted from the closed position to the open position as will be described later, the lower protruding piece 92 comes into contact with the outer surface of the mounting wall 4 and uses this as a pivot point. On the upper surface of the mounting wall 4, a bulge portion 94 that bulges upward is formed at a portion that aligns with the lower protrusion piece 92 in the circumferential direction. be forced into contact.

Next, the mouth and neck portion 100 of the container to which the one-piece cap 2 is attached will be described with reference to FIGS. 8 to 11. The mouth and neck portion 100 of the container, which can be formed from a suitable synthetic resin such as polyethylene terephthalate, glass, or sheet metal, is generally cylindrical in shape and has an open top surface. An annular locking protrusion 102 that protrudes radially outward is formed at the upper end of the outer peripheral surface of the mouth and neck portion 100 . An upper locked means 104 is disposed below the annular locking protrusion 102 . Two upper locking means 104 are disposed on the outer peripheral surface of the mouth and neck portion 100. The two upper locked means 104 are located on opposite sides in the diametrical direction. The upper locked means 104 includes a rectangular recess 106 formed on the outer peripheral surface of the mouth and neck part 100, a climbing protrusion 108 located adjacent to the clockwise downstream side of the recess 106 when viewed from above, and and a ratchet piece 110 located adjacent to the upstream side of the recess 106 in the clockwise direction. Both circumferential side surfaces of the overpassing protrusion 108 are symmetrical in the circumferential direction in a plan view, and are somewhat gently inclined with respect to the outer circumferential surface of the mouth and neck portion 100. On the other hand, both circumferential side surfaces of the ratchet piece 110 are asymmetrical in the circumferential direction in a plan view, and the outer surface 110a located on the upstream side in the clockwise direction when viewed from above is gently inclined with respect to the outer circumferential surface of the mouth and neck portion 100. However, the inner surface 110b located on the downstream side in the clockwise direction is sharply cut out from the outer circumferential surface of the mouth and neck portion 100. A male thread 112 is formed below the upper locking means 104, into which the female thread 32 of the one-piece cap 2 is screwed. In such a male thread 112, as shown in FIG. 10, a lower locking means 114 is provided on the lower surface of a required lower end portion. In the illustrated embodiment, the lower locked means 114 is constituted by a protrusion. A locking jaw portion 116 is formed below the male thread 112, and a support ring 118 is formed below the locking jaw portion 116. Locking jaws 116 and support ring 118 are well known to those skilled in the art. A plurality of rectangular lightening recesses 120 are formed between the locking jaw portion 116 and the support ring 118 at intervals in the circumferential direction.

When the one-piece cap 2 is attached to the mouth and neck part 100 to seal the mouth and neck part 100 after filling the container with contents, the one-piece cap 2 is fitted to the mouth and neck part 100 and closed. Rotate in the direction of rotation, clockwise when viewed from above in FIGS. 3 to 5, to screw the female thread 32 of the one-piece cap 2 onto the male thread 112 of the mouth and neck portion 100. At the initial stage of this screwing, the locking means 30 formed on the inner peripheral surface of the mounting wall 4 of the one-piece cap 2 elastically engages the upper locking means 104 formed on the outer peripheral surface of the mouth and neck part 100. (See FIGS. 6 and 11). At this time, the locking means 30 moves the ratchet piece 110 from the outer surface 110a that is gently sloped with respect to the outer circumferential surface of the mouth and neck section 100 toward the inner surface 110b that is sharply steep with respect to the outer circumferential surface of the mouth and neck section 100. Therefore, the ratchet piece 110 can be elastically overcome. The locking means 30 elastically rides over the ratchet piece 110 and then also the ride-over protrusion 108 . When the female thread 32 is screwed into the male thread 112 to the state shown in FIG. While being brought into close contact with the inner circumferential surface of the portion 100, the upper protrusion 68, following the first lower protrusion 70 and the second lower protrusion 72, elastically rides over the annular locking protrusion 102 in order to form an annular shape. The protrusion 58 is brought into close contact with the top surface of the mouth and neck 100, thus sealing the mouth and neck 100. At this time, the locking protrusion 34 disposed on the inner peripheral surface of the tamper-evident hem 14 elastically engages the locking jaw 116 of the mouth and neck portion 100 (i.e., elastic deformation of the tamper-evident hem 14 (by displacement) and is located below the locking jaw 116. When the locking projection 34 elastically rides over the locking jaw 116, the locking projection 34 and the locking jaw 116 come into close contact, so that a braking force is applied only to the tamper-evident hem 14. In the illustrated embodiment, as shown in FIG. 4, the main portion 12 has a locking surface 40, and the tamper-evident hem 14 has a locking surface 46 that faces the locking surface 40 in the circumferential direction. Due to this structure, when the main portion 12 attempts to rotate in the closing rotation direction with respect to the tamper-evident hem 18, the locked surface 46 rotates the locking surface 40 in the same direction, that is, in the closing rotation direction. By pressing, the main part 12 is prevented from rotating in the closing rotation direction with respect to the tamper-evident hem 14, so that when the one-piece cap 2 is attached to the mouth and neck part 100, the main part 12 is Rotation relative to the evident hem 18 prevents the first bridging portion 18 of the breakable line 10 from being stretched and broken.

When opening the mouth and neck part 100 to consume the contents, the one-piece cap 2 is grasped with fingers and rotated in the opening direction, that is, counterclockwise when viewed from above in FIG. 12-1. When rotating the one-piece cap 2, even if the side edges of the upper protruding piece 84 are grasped with fingers, since both sides of the upper protruding piece 84 in the circumferential direction are closed by the protective walls 88, the upper protruding piece 84 The side edge of the finger will not dig into the finger and cause pain (see FIGS. 2 and 4). When the one-piece cap 2 is rotated in the opening direction, the threaded engagement between the male thread 112 and the female thread 32 is gradually released, and the main portion 12 of the mounting wall 4 and the top cover 8 are moved upward with the rotation. On the other hand, the tamper-evident hem 14 is prevented from moving upward because the locking protrusion 34 is locked to the locking jaw 116 of the mouth and neck section 100, thereby preventing the tamper-evident hem 14 from moving upward. A stress is generated at which causes the first bridging portion 18 to rupture and the tamper-evident skirt portion 14 to be separated from the main portion 12 of the mounting wall 4 . At this time, in the illustrated embodiment, as shown in FIG. 4, the main portion 12 is formed with an upper sloped surface 42 and the tamper-evident hem 14 is formed with a lower sloped surface 48, and the one-piece cap 2 When the main portion 12 is rotated in the opening direction, the main portion 12 is guided to move upward relative to the tamper-evident hem 14 by cooperation between the upper inclined surface 42 and the lower inclined surface 48, so that the first bridging Section 18 is easily broken.

When the one-piece cap 2 is further rotated in the opening direction to reach the raised position shown in FIG. (See FIGS. 6 and 11). In the illustrated embodiment, the locking means 30 is inserted into the ratchet piece 110 that is sharply cut against the outer circumferential surface of the mouth and neck part 100 in the recess 106 after elastically riding over the riding over protrusion 108 in the circumferential direction. Since the locking means 30 is locked by the side surface 110b, the locking means 30 is held in the recess 106. Therefore, the upper lid 8 is held in the raised position. When the upper lid 8 reaches the raised position, the upper protrusion 68 of the upper lid 8 elastically rides over the annular locking protrusion 102 of the mouth and neck part 100, and the annular locking protrusion 102 moves upwardly when viewed in the vertical direction. It is located between the upper protrusion 68 and the first lower protrusion 70 and the second lower protrusion 72. Even when the upper lid 8 is in the raised position, the outer peripheral surface of the seal piece 56 is in close contact with the inner peripheral surface of the mouth and neck part 100.

Next, place the palm of your finger on the outer surface of the hanging large wall 62 of the upper lid 8, and hook your finger on the lower surface of the upper flange 54 to force the upper lid 8 upwards, so that the lower surface of the upper lid 8 and the upper surface of the mounting wall 4 are pressed together. After breaking the connecting second bridging portion 67, the upper lid 8 is turned in the opening direction. The upper cover 8 is rotated around the strap band 6 as a center of rotation. In the initial stage of turning the upper lid 8 in the opening direction, the first lower protrusion 70 and the second lower protrusion 72 elastically ride over the annular locking protrusion 102 of the mouth and neck section 100. Then, when the upper lid 8 is turned to the required degree in the opening direction, as shown in FIG. , the upper cover 8 pivots using the bulge 94 as a pivot point. Since the upper lid 8 uses the outer surface of the mounting wall 4 as a pivot point, the upper lid 8 can stably pivot. The bulging portion 94 bulges upward on the upper surface of the mounting wall 4, and as a result, the outer surface of the mounting wall 4 is also expanded upward, so that the lower protruding piece 92 easily extends over the outer surface of the mounting wall 4, that is, the bulge. It can come into contact with the outer surface of the protrusion 94 .

The upper cover 8 reaches the open position shown in FIG. 12-4 by being further turned in the opening direction from the state shown in FIG. 12-3. When the upper lid 8 is turned to the open position, the engaged means 78 provided on the upper lid 8 elastically overcomes the engaging means 76 of the mounting wall 4 and enters the inside of the mounting wall 4 through the opening 80. After that, it is elastically locked by the engaging means 76, and the outer surface of the skirt wall 52 of the upper cover 8 is supported by the outer surface of the upper frame 82b of the opening 80 formed in the mounting wall 4. In the illustrated embodiment, when the engaged means 78 passes over the engaging means 76, the free end edge of the engaging means 76 is elastically displaced radially inward. In this way, the upper lid 8 is prevented from being pivoted from the open position toward the closed position.

When the top lid 8 is turned to the open position, the top surface of the mouth and neck part 100 of the container is exposed. Therefore, if the container is tilted appropriately with the top lid 8 turned to the open position, , the contents within the container are discharged from the top surface of the mouth and neck section 100. At this time, since the upper lid 8 is prevented from turning in the closing direction by the engagement between the engaging means 76 and the engaged means 78, the upper lid 8 does not turn in the closing direction when the container is tilted. The user can easily empty the contents.

According to the one-piece cap of the present invention, when the upper lid 8 is turned to the open position, the engaged means 78 of the upper lid 8 climbs over the engaging means 76 of the mounting wall 4 and exits from the opening 80 inside the mounting wall 4. The upper lid 8 is engaged with the engaging means 76 after entering the upper lid 8, and the outer surface of the skirt wall 52 of the upper lid 8 is supported by the outer surface of the upper frame 82b of the opening 80 formed in the mounting wall 4. It is held securely enough in the open position.

After the required amount of contents has been discharged, the upper lid 8 is rotated in the closing direction from the open position to the closed position using the strap band 6 as the rotation center. At this time, the engagement is released as the engaged means 78 elastically overcomes the engaging means 76. As shown in FIG. 12-2, the seal piece 56 of the upper lid 8 enters the inside of the mouth and neck part 100, thereby temporarily sealing the top surface of the mouth and neck part 100. Then, the first lower protrusion 70 and the second lower protrusion 72 of the top lid 8 elastically ride over the annular locking protrusion 102 formed on the mouth and neck part 100 of the container and are positioned below this. By doing so, the upper lid 8 is held in the closed position.

Although the one-piece cap constructed according to the present invention has been described in detail with reference to the attached drawings, the present invention is not limited to the embodiments described above, and various modifications may be made without departing from the scope of the present invention. Variations are possible. For example, in the illustrated embodiment, the engaging means 76 is an extending piece that extends upward from the upper surface of the lower frame 82a of the opening 80, but this extending piece is omitted and the lower frame 82a itself is used. It may also be used as an engagement means 76. In that case, the protective wall 88 of the engaged means 78 is omitted. Further, in the illustrated embodiment, the engaging means 76 is formed on the lower frame 82a of the opening 80, but the engaging means may be formed on the upper frame 82b of the opening 80. In that case, the engaged means 78 is formed on the lower surface of the protruding piece (upper protruding piece 84). Furthermore, in the illustrated embodiment, the one-piece cap 2 is screwed onto the neck 100 of the container, but the female thread 32 formed on the inner peripheral surface of the mounting wall 4 and the neck of the container The male thread 112 formed on the outer peripheral surface of the portion 100 may be omitted, and a one-piece cap may be attached to the mouth and neck of the container.

2: 1-piece cap 4: Mounting wall 6: Strap band 8: Top lid 50: Top wall 52: Skirt wall 76: Engagement means 78: Engaged piece 80: Opening 82a: Lower frame (of the opening) 82b: Upper frame (of the opening) 84: Projecting piece (upper projecting piece)
100: Mouth and neck of container

Claims (11)

It comprises a cylindrical mounting wall that is attached to the mouth and neck of the container, and an upper lid that has a top wall and a skirt wall that hangs down from the periphery of the top wall,
The top cover is hingedly connected to the mounting wall and the skirt wall by a strap band, so that the top cover can freely pivot between a closed position that covers the top surface of the mounting wall and an open position that exposes the top surface of the mounting wall. can be,
When the top cover is pivoted to the open position, the engaging means provided on the mounting wall and the engaged means provided on the top cover engage, and the top cover moves from the open position to the closed position. In a one-piece cap that is prevented from being pivoted toward the
An opening having a four-sided frame is formed on the outer surface of the mounting wall on the hinged side, and the engaging means is provided on a lower frame or an upper frame of the opening,
An upper protruding piece that protrudes radially outward is formed on the outer surface of the upper lid, and the engaged means is provided on the upper or lower surface of the upper protruding piece,
When the top cover is pivoted to the open position, the engaged means passes over the engaging means and enters the inside of the mounting wall through the opening, and then is engaged with the engaging means. A one-piece cap characterized in that the outer surface of the skirt wall is supported by the outer surface of the upper frame. 2. The one-piece cap according to claim 1, wherein the engagement means is an extending piece extending upwardly from the upper surface of the lower frame of the opening or downwardly from the lower surface of the upper frame. 3. The one-piece cap according to claim 1, wherein the engaged means is a protrusion provided on the upper surface or lower surface of the upper protruding piece. When the engaging means is provided in the lower frame of the opening, the engaged means is formed on the upper surface of the upper protruding piece, and the lower surface of the upper protruding piece extends radially outward. A one-piece cap according to any one of claims 1 to 3, which slopes upwardly. 5. The one-piece cap according to claim 4, wherein both circumferential sides of the upper protruding piece are closed by protective walls connected to the outer surface of the upper lid. The one-piece cap according to any one of claims 1 to 5, wherein the radially outer end of the upper protruding piece is located on the circumference of an imaginary circle that defines the outer peripheral surface of the mounting wall or inside the imaginary circle. 7. The one-piece cap according to claim 1, wherein the outer surface of the skirt wall is formed with a lower protruding piece that protrudes radially outward below the engaged means. 8. The one-piece cap according to claim 7, wherein when the upper lid is pivoted from the closed position to the open position, the lower protruding piece abuts the outer surface of the mounting wall and uses this as a pivot point. 9. The one-piece cap according to claim 8, wherein an upwardly protruding bulge is formed on the upper surface of the mounting wall, and the lower protrusion is brought into contact with the outer surface of the bulge. The one-piece cap according to any one of claims 7 to 9, wherein the radially outer end of the lower projecting piece is located on the circumference of an imaginary circle that defines the outer peripheral surface of the mounting wall or inside the imaginary circle. . A combination of a container and a one-piece cap according to any one of claims 1 to 10,
A male thread is formed on the outer peripheral surface of the mouth and neck of the container, and a female thread is formed on the inner peripheral surface of the mounting wall to be screwed into the male thread,
When the one-piece cap moves upward with respect to the mouth and neck of the container and reaches the raised position due to the screw engagement between the female thread and the male thread, a cap is formed on the inner circumferential surface of the mounting wall. The one-piece cap is held in the raised position by the locking means formed on the outer peripheral surface of the mouth and neck of the container, and the top lid is pivoted relative to the mounting wall. Any combination you want.

Images