Container

Abstract

To provide a container capable of effectively suppressing a cap body mounted on its neck body from rotating together.SOLUTION: A container 1 has a cap body 2 mounted on its neck part 4 when rotated in a closing direction D1 as a cap-side lower screw thread part 32 engages a container-side lower screw thread part 42 after a cap-side upper screw thread part 31 engages a container-side upper screw thread part 41. When force rotating the cap body 2 in an opening direction is applied in the mounted state, the container-side lower screw thread part 42 interferes with the cap-side lower screw thread part 32 to stop the cap body from further rotating, but when the cap body 2 is rotated in the opening direction while being held at a height different from that of the mounted state, the lower screw thread parts 42, 32 are disengaged from each other and the upper screw thread parts 41, 31 are also disengaged from each other, so that the cap body 2 can be taken out of the neck part 4.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to a container including a container body having a neck portion and a cap body attached to the neck portion.

Background Art

[0002] A container for storing a liquid such as a liquid detergent generally includes a container body for storing the liquid and a cap body having a nozzle portion for pouring out the liquid. This cap body is attached to the neck portion of the container body. As a container with a cap body having a nozzle portion attached thereto, Patent Document 1 discloses a container including a cap body having an outer cylinder portion, a suspension cylinder portion located inside thereof, an inward flange-shaped bottom plate provided at the lower end of the suspension cylinder portion, a gutter-shaped pouring portion, and a fitting groove provided around the outer surface of the lower portion of the pouring portion. Patent Document 2 discloses a container including a pouring cap detachably attached to the mouth neck portion of the container body by screwing, and a handle provided on a side surface of the cap body. The handle has a shape bent downward, and a tip portion of the handle can abut against a contact surface of the container body.

[0003] Further, the applicant has previously proposed a container in which engaging portions that engage with each other in the circumferential direction are provided on the container body and the nozzle cap, and when the screwing is attached to and detached from the mouth portion of the container body, the engaging portion of the nozzle cap that is locked in a bidirectional manner along the axial direction engages with and disengages from the engaging portion of the container body (Patent Document 3). Patent Document 4 discloses a container including a container body having a neck portion provided with a biting portion at the base, an outer wall having a screw portion that is screwed to the neck portion and a locking projection that locks to a locking part, the locking part having an insertion portion that is inserted into the locking projection to prevent rotation and a biting projection that is inserted into the biting portion of the container body opening to prevent rotation of the pouring cap. When an overcap is crowned on the pouring cap, a flange abuts against the upper end of the locking part to prevent release of the biting of the locking part.

Prior Art Documents

Patent Document

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0005] A lid cap for opening and closing the opening (nozzle portion) of the cap body is attached to the cap body. When the lid cap is attached to the cap body by screwing, the lid cap is removed by rotating the lid cap in the opening direction around the cap body. When removing the lid cap, in order to prevent the cap body from rotating together with the lid cap and the cap body from coming off from the neck portion, by providing a ratchet mechanism or an undercut shape, the cap body may be detachably attached to the neck portion. In this case, it becomes difficult to check the liquid in the container body, and it becomes difficult to pour out the remaining liquid until the end. Also, the user of the container cannot distinguish between the container body and the cap body. Regarding the containers disclosed in Patent Documents 1 to 4, there was room for improvement in suppressing the rotation of the cap body detachably attached to the neck portion.

[0006] The present invention relates to a container including a container body having a neck portion and a cap body attached to the neck portion.

Means for Solving the Problems

[0007] The present invention relates to a container including a container body having a neck portion and a cap body attached to the neck portion. As one embodiment, it is preferable that the cap body has an outer cylinder portion forming an outer peripheral portion of the cap body, and a lid cap is detachably attached to the outer cylinder portion. As one embodiment, it is preferable that a cap-side upper thread portion and a cap-side lower thread portion positioned below the cap-side upper thread portion are discontinuously formed on the inner peripheral surface of the outer cylinder portion. As one embodiment, it is preferable that a container-side upper thread portion and a container-side lower thread portion positioned below the container-side upper thread portion are discontinuously formed on the outer peripheral surface of the neck portion. As one embodiment, when the cap body is rotated in the closing direction around the neck portion, after the cap-side upper thread portion is screwed with the container-side upper thread portion, the cap-side lower thread portion is screwed with the container-side lower thread portion, and it is preferable that the cap body is attached around the neck portion. As one embodiment, in the attached state, when a force is applied to rotate the cap body in the opening direction, it is preferable that the container-side lower thread portion interferes with the cap-side lower thread portion and further rotation is blocked. As one embodiment, when the cap body is rotated in the opening direction around the neck portion while making the height position of the cap body different from the attached state, the screwing of the cap-side lower thread portion with the container-side lower thread portion and the screwing of the cap-side upper thread portion with the container-side upper thread portion are released, and it is preferable that the cap body can be removed from the neck portion.

Advantages of the Invention

[0008] According to the container of the present invention, the rotation of the cap body attached to the neck portion can be effectively suppressed.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, the container of the present invention will be described with reference to the drawings based on its preferred embodiments. FIG. 1 shows an embodiment of the container of the present invention. The container 1 shown in FIG. 1 includes a container body 10 in which a liquid is contained, a cap body 2 attached to the mouth portion 4 of the container body 10, and a lid cap 6 detachably attached to the cap body 2. The container 1 of the present embodiment is a bottle container, and the container body 10 includes a body portion 13 having a bottom and a mouth portion 4 having a through hole (liquid flow path) communicating with the inside of the body portion 13. The body portion 13 of the present embodiment includes a gripping through hole 12 penetrating the body portion 13 and a gripping portion 11 forming the outer peripheral edge of the gripping through hole 12 at a position away from the central axis of the mouth portion 4.

[0011] The container body 10 of the present embodiment has a liquid storage space inside the body portion 13 including the gripping portion 11. This body portion 13 has a bottom, and by grounding the bottom on a horizontal plane, the container body 10 (container 1) can be made to stand independently in a self-standing state. In the self-standing state, the height direction (central axis direction) of the container 1 coincides with the vertical direction, the mouth neck portion 4 is located above in the vertical direction and is disposed opposite to the bottom of the body portion 13 in the same direction. In the container 1 of the present embodiment, the central axis of the mouth neck portion 4 coincides with the vertical direction in the self-standing state. The height direction (vertical direction) of this container 1 coincides with the central axis direction of the mouth neck portion 4 and the cap body 2. Hereinafter, unless otherwise specified, the description of the mouth neck portion 4 and the cap body 2 of the present embodiment shall be a description in a state where the central axis direction of the mouth neck portion 4 and the cap body 2 coincides with the vertical direction. Also, the central axis direction of the mouth neck portion 4 and the cap body 2 shall be the height direction Z of the mouth neck portion 4 and the cap body 2. Such a height direction Z is also simply referred to as the "height direction Z".

[0012] The type of liquid accommodated in the container 1 of the present embodiment is not particularly limited. Examples of the liquid include liquid hair care agents such as shampoo, hair conditioner, and hair rinse, liquid soaps such as body soap and hand soap, liquid detergents for clothes and tableware, fabric softeners and bleaches, liquid detergents for toilets and floor cleaning, liquid cosmetics, liquid beverages, foods, pharmaceuticals, engine oil, etc. Also, a liquid with a high viscosity such as cream may be used. The liquid is accommodated in the storage space inside the container body 10.

[0013] The mouth neck portion 4 is a cylindrical portion having a liquid flow path inside, and is provided at the upper end of the container body 10. The flow path communicates with the inside of the body portion 13 of the container body 10. The mouth neck portion 4 has a container-side screw thread portion BS formed on its outer peripheral surface (see FIGS. 3 and 4). The container-side screw thread portion BS and a cap-side screw thread portion CS formed on the inner peripheral surface of the lower outer cylinder portion 22 described later are made to be screwable. Thereby, the cap body 2 is detachably attached to the mouth neck portion 4.

[0014] Hereinafter, the thread portion BS formed on the mouth portion 4 is also referred to as the "container-side" thread portion. Further, the thread portion CS formed on the cap body 2 is also referred to as the "cap-side" thread portion. Also, regarding each thread portion and the small thread portion described later, the end at the highest position in the height direction Z is also referred to as the "starting end", and the end at the lowest position in the height direction Z is also referred to as the "ending end".

[0015] On the outer peripheral surface of the mouth portion 4, as the container-side thread portion BS, a container-side upper thread portion 41 and a container-side lower thread portion 42 are formed (see FIGS. 4 and 5(b)). These container-side upper thread portion 41 and container-side lower thread portion 42 are not continuous and are formed discontinuously. In the height direction Z, the container-side lower thread portion 42 is located below the container-side upper thread portion 41.

[0016] The container-side upper thread portion 41 of the present embodiment is composed of a plurality of small thread portions, and has a first small upper thread portion 41a, a second small upper thread portion 41b, and a third small upper thread portion 41c arranged along the circumferential direction of the mouth portion 4 (see FIG. 5(b)). These first to third small upper thread portions 41a, 41b, 41c are spaced apart from each other in the circumferential direction of the mouth portion 4 and are arranged spirally along the outer peripheral surface of the mouth portion 4. In the circumferential direction of the mouth portion 4, the second and third small upper thread portions 41b, 41c have the same length (hereinafter also referred to as the "circumferential length") in the circumferential direction of the mouth portion 4 and are arranged opposite to each other in the circumferential direction. The first small upper thread portion 41a has a shorter circumferential length than the second and third small upper thread portions 41b, 41c and partially overlaps the third small upper thread portion 41c in the circumferential direction of the mouth portion 4. These small upper thread portions 41a, 41b, 41c are arranged in the order of the first, second, and third from above in the height direction Z.

[0017] The lower screw thread portion 42 on the container side of the present embodiment is composed of a plurality of small screw thread portions, and has a first small lower screw thread portion 42a, a second small lower screw thread portion 42b, a third small lower screw thread portion 42c, and a fourth small lower screw thread portion 42d arranged along the circumferential direction of the neck portion 4 [see Fig. 5(b)]. These first to fourth small lower screw thread portions 42a, 42b, 42c, 42d are spaced apart from each other in the circumferential direction of the neck portion 4 and are arranged spirally along the outer peripheral surface of the neck portion 4. In the circumferential direction of the neck portion 4, the first and third small lower screw thread portions 42a, 42c have the same circumferential length in the circumferential direction of the neck portion 4 and are arranged opposite to each other in the circumferential direction. The second and fourth small lower screw thread portions 42b, 42d have the same circumferential length and are arranged opposite to each other in the circumferential direction of the neck portion 4. The first and third small lower screw thread portions 42a, 42c have a longer circumferential length than the second and fourth small lower screw thread portions 42b, 42d. These small lower screw thread portions 42a, 42b, 42c, 42d are arranged in the order of the first, second, third, and fourth from above in the height direction Z.

[0018] The neck portion 4 of the present embodiment has a flange portion 49 that projects radially outward from the outer peripheral surface of the neck portion 4 at the lower end portion. The flange portion 49 is located below the lower screw thread portion 42 on the container side in the height direction Z. In a plan view of the neck portion 4, the flange portion 49 has an annular shape. On the upper surface of the flange portion 49, a rising rib 49a that protrudes upward in the height direction Z is formed (see Fig. 4). The neck portion 4 of the present embodiment has a pair of rising ribs 49a that are opposed to each other in the circumferential direction.

[0019] A lid cap 6 is detachably attached to the cap body 2 of the present embodiment (see FIGS. 1 and 2). The lid cap 6 of the present embodiment is a measuring cap for measuring liquid. This lid cap 6 includes a bottomed cylindrical lid body 60 extending in the height direction Z in a state of being attached to the cap body 2. On the inner peripheral surface of the end portion of the lid body 60 in the height direction Z opposite to the bottom portion, that is, the end portion on the opening side of the bottomed cylinder, a lid-side thread portion (not shown) is formed. The lid-side thread portion is engageable with an upper outer cylinder thread portion 21a formed on the outer peripheral surface of the upper outer cylinder portion 21 described later. Thereby, the lid cap 6 is detachably attached to the outer cylinder portion 20 of the cap body 2. The container 1 of the present embodiment can inject and measure the liquid accommodated in the container body 10 into the lid cap 6 through a nozzle portion 25 described later. The measured liquid is usually discharged to another place such as a washing machine.

[0020] The cap body 2 of the present embodiment has an outer cylinder portion 20 having an attachment portion for the neck portion 4, a nozzle portion 25 formed radially inside the outer cylinder portion 20, an inner cylinder portion 23 located between the outer cylinder portion 20 and the nozzle portion 25, and a bottom wall portion 28 connecting the lower end edges of the inner cylinder portion 23 and the nozzle portion 25 (see FIG. 3).

[0021] The outer cylinder portion 20 of the present embodiment forms the outer peripheral portion of the cap body 2 and includes an upper outer cylinder portion 21 and a lower outer cylinder portion 22. Each of the upper outer cylinder portion 21 and the lower outer cylinder portion 22 has a substantially cylindrical shape, and the lower outer cylinder portion 22 is connected to the lower end of the upper outer cylinder portion 21. The upper end portion of the cap body 2 is formed by the upper outer cylinder portion 21. The upper edge portion of the upper outer cylinder portion 21 forms an annular shape in plan view. An upper outer cylinder thread portion 21a that engages with the lid-side thread portion is formed on the outer peripheral surface of the upper outer cylinder portion 21. The outer diameter of the upper outer cylinder portion 21 corresponds to the inner diameter of the end portion on the opening side of the lid body 60. The lid cap 6 is attached to the upper outer cylinder portion 21 by inserting the upper outer cylinder portion 21 from the opening of the lid body 60 and screwing the lid-side thread portion and the upper outer cylinder thread portion 21a together.

[0022] The inner cylinder part 23 of the present embodiment has a substantially cylindrical shape with a lower end opening inclined obliquely with respect to the horizontal direction, and is located inside the outer cylinder part 20 in the radial direction. The lower end of this inner cylinder part 23 has a height position on the opposite side of the notch part 24 of the nozzle part 25 (to be described later) in the circumferential direction higher than the height position on the side where the notch part 24 is located (see FIG. 3). Also, the inner cylinder part 23 has a height on the opposite side of the notch part 24 of the nozzle part 25 (to be described later) in the circumferential direction lower than the side where the notch part 24 is located (see FIG. 3). The inner cylinder part 23 has the side where the notch part 24 is located in the circumferential direction protruding downward beyond the lower outer cylinder part 22 (see FIG. 3). The upper edge part 23a of the inner cylinder part 23 is connected to the outer cylinder part 20 located outside the inner cylinder part 23 in the radial direction. The outer diameter of the inner cylinder part 23 corresponds to the inner diameter of the neck part 4. In the mounted state where the cap body 2 is attached to the neck part 4, the neck part 4 is disposed between the lower outer cylinder part 22 of the outer cylinder part 20 and the inner cylinder part 23, and the inner cylinder part 23 is inserted and disposed in the neck part 4. In this mounted state, the outer peripheral surface of the inner cylinder part 23 is brought into contact with the inner peripheral surface of the neck part 4. In the mounted state, the outer peripheral surface on the upper end side of the inner cylinder part 23 of the cap body 2 of the present embodiment can be in closer contact with the inner peripheral surface of the neck part 4, thereby further improving the liquid sealing property.

[0023] The bottom wall part 28 is located between the inner cylinder part 23 and the nozzle part 25 located inside the inner cylinder part 23 in the radial direction (see FIG. 3). The bottom wall part 28 connects the lower end edges of the inner cylinder part 23 and the nozzle part 25 and defines the nozzle lower end opening 29 of the nozzle part 25 (see FIG. 3). This bottom wall part 28 has a substantially annular shape in a bottom view seen from below, and a liquid return opening is formed in the portion where the notch part 24 is located in the circumferential direction (not shown).

[0024] The nozzle part 25 is a cylindrical part located inside the inner cylinder part 23 in the radial direction and protruding upward from the bottom wall part 28, and functions as a liquid flow path in the cap body 2. That is, the nozzle part 25 is used to pour out the liquid into the lid cap 6 which is a measuring cap. The nozzle part 25 of the present embodiment protrudes upward beyond the inner cylinder part 23 and further beyond the upper outer cylinder part 21. At the lower end of the nozzle portion 25, a nozzle lower end opening 29 is disposed, and the space inside the nozzle portion 25 communicates with the inside of the container body 10 (neck portion 4) through the nozzle lower end opening 29. The nozzle portion 25 is formed so as to surround the periphery of the nozzle lower end opening 29.

[0025] The nozzle portion 25 has a nozzle lower end opening 29 at the lower end and a nozzle upper end opening at the upper end, and has a cylindrical shape in which both openings communicate. The nozzle portion 25 of the present embodiment has a notch portion 24 formed along the height direction Z of the nozzle portion 25 in a part of the circumferential direction of the nozzle portion 25. In the present embodiment, the notch portion 24 and the nozzle upper end opening are continuous (see FIG. 2). Further, the notch portion 24 of the present embodiment reaches the lower end of the nozzle portion 25 and is continuous with the nozzle lower end opening 29.

[0026] In the present embodiment, a part of the lower end edge of the lower outer cylinder portion 22 is inclined with respect to the horizontal direction in the circumferential direction, so that the lower outer cylinder portion 22 has an inclined step portion 22a in which a part of the lower end edge protrudes downward (see FIG. 2). In a state where the cap body 2 is attached to the neck portion 4, the inclined step portion 22a is a portion that comes into contact with a climbing rib 49a described later. On the inner peripheral surface of the lower outer cylinder portion 22, a cap-side thread portion CS that engages with the container-side thread portion BS is formed (see FIG. 3). The inner diameter of the lower outer cylinder portion 22 corresponds to the outer diameter of the neck portion 4. The cap body 2 inserts the neck portion 4 inside the lower outer cylinder portion 22 and engages the container-side thread portion BS and the cap-side thread portion CS, so that the neck portion 4 is detachably attached to the lower outer cylinder portion 22. That is, the cap-side thread portion CS of the lower outer cylinder portion 22 serves as an attachment portion to the neck portion 4.

[0027] On the inner peripheral surface of the outer cylinder portion 20, more specifically, on the inner peripheral surface of the lower outer cylinder portion 22, there are formed a cap-side upper screw thread portion 31 and a cap-side lower screw thread portion 32 as cap-side screw thread portions CS (see Fig. 5(a)). These cap-side upper screw thread portion 31 and cap-side lower screw thread portion 32 are not continuous and are formed discontinuously. In the height direction Z, the cap-side lower screw thread portion 32 is located below the cap-side upper screw thread portion 31. The cap-side upper screw thread portion 31 of the present embodiment is provided spirally around the outer peripheral surface of the cap body 2 for approximately one turn. The cap-side lower screw thread portion 32 of the present embodiment is composed of a plurality of small screw thread portions, and has a first cap-side small lower screw thread portion 32a, a second cap-side small lower screw thread portion 32b, a third cap-side small lower screw thread portion 32c, and a fourth cap-side small lower screw thread portion 32d (see Fig. 5(a)). These first to fourth cap-side small lower screw thread portions 32a, 32b, 32c, 32d are spaced apart from each other in the circumferential direction of the cap body 2 and are arranged spirally along the outer peripheral surface of the cap body 2. In the circumferential direction of the cap body 2, the first and third cap-side small lower screw thread portions 32a, 32c are arranged opposite to each other. Also, the second and fourth cap-side small lower screw thread portions 32b, 32d are arranged opposite to each other in the circumferential direction. These cap-side small lower screw thread portions 32a, 32b, 32c, 32d have the same circumferential length and are arranged in the order of first, second, third, and fourth from above in the height direction Z.

[0028] In the present embodiment, when the cap body 2 is placed over the neck portion 4 of the container 1 and the cap body 2 is rotated clockwise around the neck portion 4, the cap-side screw thread portion CS can be screwed onto the container-side screw thread portion BS. When the cap body 2 is rotated counterclockwise around the neck portion 4, the screwing engagement between the container-side screw thread portion BS and the cap-side screw thread portion CS can be released. When rotating the cap body 2 around the neck portion 4 (circumferential direction), the rotation direction for screwing the cap-side screw thread portion CS onto the container-side screw thread portion BS is also referred to as the "closing direction D1", and the opposite direction of this closing direction is also referred to as the "opening direction D2". The closing direction D1 coincides with the rotational direction of the lid cap 6 around the cap body 2 when the lid cap 6 is attached to the cap body 2, and the opening direction D2 coincides with the rotational direction of the lid cap 6 around the cap body 2 when the lid cap 6 is removed from the cap body 2.

[0029] The engagement between the container-side thread portion and the cap-side thread portion when the cap body 2 is attached to the neck portion 4 of the present embodiment is shown in FIG. 6. From the viewpoint of ease of explanation, in FIGS. 6(a) to 6(d), the terminal-side portion of the third small upper thread portion 41c and the region including the fourth small lower thread portion 42d in the neck portion 4 are set as fixed positions, and the terminal-side portion of the cap-side upper thread portion 31 and the fourth cap-side small lower thread portion 32d in the lower outer cylinder portion 22 that rotates around the neck portion 4 are extracted and shown.

[0030] When the container 1 of the present embodiment rotates the cap body 2 in the closing direction D1 around the neck portion 4, the cap-side upper thread portion 31 is screwed into the container-side upper thread portion 41 (see FIG. 6(a)). At this time, the cap-side upper thread portion 31 rotates and moves along the small upper thread portions 41a, 41b, and 41c in the first to third order. Along with such rotational movement, the position of the cap body 2 in the height direction Z descends toward the body portion 13 side, and the lower end of the lower outer cylinder portion 22 approaches the flange portion 49 of the neck portion 4. After the screwing of the cap-side upper thread portion 31 into the container-side upper thread portion 41 is completed, that is, after the start end of the cap-side upper thread portion 31 passes the start end of the container-side upper thread portion 41, when the cap body 2 is further rotated in the closing direction D1, the cap-side lower thread portion 32 is screwed into the container-side lower thread portion 42 (see FIG. 6(b)). That is, the first to fourth cap-side small lower thread portions 32a, 32b, 32c, and 32d rotate and move along the first to fourth small lower thread portions 42a, 42b, 42c, and 42d. If the rotation in the closing direction D1 is continued, the fourth cap-side lower small screw thread portion 32d will pass beyond the end of the fourth lower small screw thread portion 42d (see Fig. 6(c)). When the fourth cap-side lower small screw thread portion 32d is at or near the rotational position where it has passed beyond the end of the fourth lower small screw thread portion 42d, the inclined step portion 22a of the lower outer cylinder portion 22 abuts against the rising rib 49a (see Fig. 6(c)). If it is further rotated in the closing direction D1 from there, the inclined step portion 22a rides up on the rising rib 49a (see Fig. 6(d)). As a result, the position of the cap body 2 in the height direction Z rises by the amount of the rising rib 49a, and the position (height position) of the start end of the fourth cap-side lower small screw thread portion 32d in the height direction Z rises to coincide with the height position of the end of the fourth lower small screw thread portion 42d, and the start end of the fourth cap-side lower small screw thread portion 32d and the end of the fourth lower small screw thread portion 42d are brought into contact with each other. That is, the fourth cap-side lower small screw thread portion 32d is circumferentially adjacent to the fourth lower small screw thread portion 42d. In this way, the container 1 is in a mounted state in which the cap body 2 is mounted on the neck portion 4 (see Figs. 2 and 3).

[0031] In the above-described mounted state of the container 1 of the present embodiment, when a force for rotating the cap body 2 in the opening direction D2 is applied, the container-side lower screw thread portion 42 interferes with the cap-side lower screw thread portion 32 and further rotation is blocked. More specifically, the fourth lower small screw thread portion 42d blocks the rotational movement of the fourth cap-side lower small screw thread portion 32d in the opening direction D2 (see Fig. 6(d)). As a result, the rotational movement of the cap body 2 in the opening direction D2 is restricted. Consequently, even if an operation of rotating the lid cap 6 mounted on the cap body 2 in the opening direction D2 to remove the lid cap 6 is performed, it is possible to effectively suppress the cap body 2 from rotating idly, and thus the mounted state of the cap body 2 can be maintained well.

[0032] In the container 1 of this embodiment, when the cap body 2 is rotated in the opening direction D2 while making the height position of the cap body 2 different from the mounted state, the screwing of the lower screw thread portion 32 on the cap side with respect to the lower screw thread portion 42 on the container side and the screwing of the upper screw thread portion 31 on the cap side with respect to the upper screw thread portion 41 on the container side are released. More specifically, when the cap body 2 is rotated in the opening direction D2 around the neck portion 4 while pushing the cap body 2 downward in the height direction Z, as the inclined step portion 22a moves from the riding rib 49a onto the flange portion 49, the height position (position in the height direction Z) of the cap body 2 drops by the amount of the riding rib 49a [see Fig. 6(c)]. As a result, the fourth lower screw thread portion 32d on the cap side moves below the fourth lower screw thread portion 42d, and the above-mentioned interference by the fourth lower screw thread portion 42d is released. Also, the upper end of the upper screw thread portion 31 on the cap side moves downward away from the lower end of the third upper screw thread portion 41c [see Fig. 6(c)]. By arranging the lower screw thread portion 32 and the upper screw thread portion 31 on the cap side at such height positions, the cap body 2 can be rotationally moved in the opening direction D2, and by the rotation in the opening direction D2, the screwing between the lower screw thread portions 32 and 42 and the screwing between the upper screw thread portions 31 and 41 are released. In this way, the cap body 2 can be removed from the neck portion 4. Therefore, the container 1 of this embodiment can effectively suppress the rotation of the cap body 2 accompanying the rotation of the lid cap 6 in the opening direction D2 while being able to detachably attach the cap body 2 to the neck portion 4.

[0033] The upper screw thread portions 41 and 31 on the container side and the cap side that are screwed together, and the lower screw thread portions 42 and 32 on the container side and the cap side that are screwed together have different screw pitches. The screw pitch is the amount of movement (mm / 360°) of the cap body 2 in the height direction Z when rotated 360° in the closing or opening direction. When the number of turns of the screw thread portion is less than 1, the screw pitch is calculated by converting the amount of movement when the number of turns is made 1. Also, when the screw thread portion is composed of small screw thread portions, the screw pitch is the screw pitch of the continuous screw thread portion formed by continuously arranging these small screw thread portions in the circumferential direction. The thread pitches of the lower thread portions 42 and 32 on the container side and the cap side are preferably larger than those of the upper thread portions 41 and 31 on the container side and the cap side (lower thread portions 42 and 32 > upper thread portions 41 and 31). Thereby, the amount of movement of the cap body 2 due to the screwing of the lower thread portions 32 and 42 can be made larger than the amount of movement of the cap body 2 due to the screwing of the upper thread portions 31 and 41. Therefore, the rotation restricting effect of the cap body 2 due to the interference of the lower thread portion 42 on the container side can be obtained more reliably.

[0034] When the thread pitches of the upper and lower thread portions have the above-mentioned size relationship, from the viewpoint of further improving the rotation restricting effect of the cap body 2, the thread pitch of each thread portion is preferably within the following range. The difference in the thread pitches between the lower thread portions 42 and 32 on the container side and the cap side and the upper thread portions 41 and 31 on the container side and the cap side is preferably 0.1 mm or more and 30 mm or less, more preferably 1 mm or more and 20 mm or less. The thread pitch of the lower thread portions 42 and 32 on the container side and the cap side is preferably 1 mm or more and 10 mm or less, more preferably 2 mm or more and 8 mm or less. The thread pitch of the upper thread portions 41 and 31 on the container side and the cap side is preferably 2 mm or more and 12 mm or less, more preferably 5 mm or more and 10 mm or less.

[0035] The upper thread portions 41 and 31 on the container side and the cap side that are screwed together and the lower thread portions 42 and 32 on the container side and the cap side that are screwed together have different numbers of turns. The number of turns is the number of times the thread portion spirally winds around (wraps around) the outer peripheral surface of the neck portion 4 or the lower outer cylindrical portion 22. When the thread portion is composed of small thread portions, the number of turns is the number of turns of the continuous thread portion formed by continuously arranging these small thread portions in the circumferential direction. The lower thread portions 42 and 32 on the container side and the cap side preferably have a smaller number of turns than the upper thread portions 41 and 31 on the container side and the cap side (lower thread portions 42 and 32 < upper thread portions 41 and 31). That is, the lower thread portions 42 and 32 preferably have a shorter circumferential length than the upper thread portions 41 and 31.

[0036] The lower screw threads 42 and 32 on the container side and the cap side in this embodiment are double-threaded, while the lower screw threads 42 and 32 on the container side and the cap side are single-threaded. Such a configuration is preferable in that it can easily align the cap body 2 around the neck portion 14 to a predetermined position in the mounted state. For example, it becomes easy to attach the cap body 2 to the neck portion 14 so that the notch portion 24 of the nozzle portion 25 faces the gripping portion 11 (see FIG. 1). Thereby, when the gripping portion 11 is lifted, the nozzle portion 25 is easily tilted downward, and the pouring operation becomes easy.

[0037] From the viewpoint of more surely performing the interference by the lower screw thread portion 42 on the container side, it is preferable that the end 41f of the upper screw thread portion 41 on the container side is located on the closing direction D1 side in the circumferential direction rather than the end 42f of the lower screw thread portion 42 on the container side (see FIG. 6(d)). From the same viewpoint as above, it is preferable that the small screw thread portion (the fourth small lower screw thread portion 32d on the cap side in this embodiment) constituting the end 32f of the lower screw thread portion 32 on the cap side has a shorter circumferential length than the small screw thread portion (the fourth lower screw thread portion 42d on the container side in this embodiment) constituting the end 42f of the lower screw thread portion 42 on the container side.

[0038] After the screwing of the lower screw thread portion 32 on the cap side with respect to the lower screw thread portion 42 on the container side is completed, when the cap body 2 is rotated in the closing direction D1, it is preferable that the cap body 2 rides on the riding rib 49a and the height positions of the lower screw thread portion 42 on the container side and the lower screw thread portion 32 on the cap side are made to coincide. That is, in the circumferential direction of the cap body 2, it is preferable that the riding rib 49a is located on the closing direction D1 side rather than the position of the end 42f of the lower screw thread portion 42 on the container side. With such a configuration, the alignment of the height positions of the lower screw thread portions 42 and 32 for performing the above-mentioned interference can be performed more smoothly from the screwing of the lower screw thread portions 42 and 32 on the container side and the cap side.

[0039] The climbing rib 49a of the present embodiment has a substantially triangular shape in a side view of the neck portion 4 viewed from the horizontal direction. From the viewpoint of more smoothly raising the height position of the cap body 2 after screwing the lower screw portion 32 on the cap side and the lower screw portion 42 on the container side, it is preferable that the climbing rib 49a has an inclined portion c whose height gradually increases toward the closing direction D1 (see FIG. 4). With such a configuration, it is possible to more easily climb the climbing rib 49a of the inclined step portion 22a.

[0040] On the outer peripheral surface of the neck portion 4 of the present embodiment, the lower portion where the lower screw portion 42 on the container side is formed is an outer large diameter portion 45 having a larger outer diameter than the upper portion where the upper screw portion 41 on the container side is formed (see FIG. 4). Thereby, in a plan view, the lower screw portion 42 on the container side projects radially outward more than the upper screw portion 41 on the container side. The upper edge of the outer large diameter portion 45 is formed in a spiral shape around the outer peripheral surface of the neck portion 4, and the starting end, which is the highest position on the upper edge of the outer large diameter portion 45, is adjacent to the closing direction rib portion 44 described later in the height direction Z. Further, the upper edge of the outer large diameter portion 45 has different height positions at the starting end and the ending end, and there is a step between these starting end and ending end.

[0041] The inner peripheral surface of the cap body 2 of the present embodiment corresponds to the outer peripheral surface of the neck portion 4, and the lower end portion where the lower screw portion 32 on the cap side is formed has a larger inner diameter than the portion where the upper screw portion 31 on the cap side is formed. That is, the upper screw portion 31 on the cap side projects radially inward more than the lower screw portion 32 on the cap side.

[0042] On the outer peripheral surface of the neck portion 4 of the present embodiment, a closing direction rib portion 44 is formed between the upper screw portion 41 on the container side and the lower screw portion 42 on the container side in the height direction Z (see FIG. 5(b)). The closing direction rib portion 44 of the present embodiment is adjacent to the end 41f of the upper screw portion 41 on the container side in the circumferential direction of the neck portion 4. The upper edge of the closing direction rib portion 44 coincides with the lower end of the third small upper screw portion 41c constituting the end 41f of the upper screw portion 41 on the container side in the height direction Z (see FIG. 4). The closing-direction rib portion 44 has the same maximum thickness projecting radially outward as the thickness of the outer large-diameter portion 45 (see Fig. 4). That is, the outer peripheral surface of the closing-direction rib portion 44 that overlaps in the circumferential direction of the neck portion 4 and the outer peripheral surface of the outer large-diameter portion 45 are continuous. A portion 46 that is located between the upper screw-thread portion 41 and the lower screw-thread portion 42 on the container side and where the closing-direction rib portion 44 and the outer large-diameter portion 45 overlap in the circumferential direction of the neck portion 4 is hereinafter also referred to as the "tightening regulation portion 46". The side edge on the opening-direction D2 side of the tightening regulation portion 46 is composed of the side edge on the opening-direction D2 side of the closing-direction rib portion 44 and the side edge connecting the starting end and the ending end of the upper edge of the outer large-diameter portion 45. The said side edges of the closing-direction rib portion 44 and the outer large-diameter portion 45 coincide in the circumferential direction position of the neck portion 4 and are continuous in the height direction Z. The tightening regulation portion 46 protrudes radially outward more than the portion on the opening-direction D2 side of the regulation portion 46, and there is a step between them in the radial direction.

[0043] In this embodiment, in the mounted state, the end portion of the cap-side upper screw-thread portion 31 overlaps with the tightening regulation portion 46 in the height direction Z (see Fig. 6(d)). Thus, when a force is applied to rotate the cap body 2 in the mounted state in the closing direction D1, the tightening regulation portion 46 interferes with the cap-side upper screw-thread portion 31 and further rotation is blocked. From the viewpoint of further improving such a rotation regulation effect, it is preferable that the height width of the tightening regulation portion 46 is larger than the height width of the cap-side upper screw-thread portion 31.

[0044] The cap body 2 of the above-described embodiment is, for example, a mold-formed product using synthetic resins such as polypropylene and polyethylene, or bioplastics such as polylactic acid, and is preferably formed by an injection molding method. Also, the container body 10 can be manufactured by blow molding using synthetic resins such as polyethylene terephthalate, polypropylene, and high-density polyethylene.

[0045] The present invention is not limited to the above-described embodiments and can be appropriately changed. For example, although the upper screw thread portion 41 on the container side in the above-described embodiment was composed of a plurality of small screw thread portions 41a, 41b, and 41c, the upper screw thread portion 41 on the container side may be a screw thread portion continuous in the circumferential direction (see FIG. 8). Also, although the neck portion 4 in the above-described embodiment has the tightening restriction portion 46, the neck portion 4 may not have the tightening restriction portion 46 (see FIG. 8). Further, although the bottom wall portion 28 in the above-described embodiment was inclined with respect to the horizontal direction, the bottom wall portion 28 may be parallel to the horizontal direction.

[0046] Also, in the above-described embodiment, the container 1 was such that the central axis of the neck portion 4 coincided with the vertical direction in the self-standing state. However, in the self-standing state, the central axis of the neck portion 4 may have an angle with respect to the vertical direction. In this case, the central axis of the neck portion 4 has an angle with respect to the central axis of the container body 10, and accordingly, the central axis of the cap body 2 is also mounted on the neck portion 4 in a state of having an angle with respect to the central axis of the container body 10. Further, although the container body 10 in the above-described embodiment includes the gripping through hole 12 and the gripping portion 11 that forms the outer peripheral edge of the through hole 12, the container body 10 may be in a form that does not include the gripping through hole 12 and the gripping portion 11. For example, the container body 10 may have a cylindrical body portion 13 having a bottom and a neck portion 14. Also, in the screw thread portion composed of a plurality of small screw thread portions, some of the small screw thread portions facing each other in the circumferential direction and the other small screw thread portions may be arranged in a state of being divided into one helix and the other helix of a double helix.

Explanation of Reference Numerals

[0047] 1 Container 10 Container body 11 Gripping portion 12 Gripping through hole 13 Body portion 2 Cap body 20 Outer cylinder portion 21 Upper outer cylinder portion 21a Upper outer cylinder screw thread portion 22 Lower outer cylinder portion 22a Inclined step portion 23 Inner cylinder portion 23a Upper edge portion 24 Notch portion 25 Nozzle portion 28 Bottom wall portion 29 Nozzle lower end opening 31 Cap side upper screw stripe portion 32 Cap side lower screw stripe portion 32a, 32b, 32c, 32d Cap side small lower screw stripe portion 4 Neck portion 41 Container side upper screw stripe portion 41a, 41b, 41c Container side small upper screw stripe portion 42 Container side lower screw stripe portion 42a, 42b, 42c, 42d Container side small lower screw stripe portion 44 Closing direction rib portion 45 Outer large diameter portion 46 Tightening regulation portion 49 Flange portion 49a Override rib 6 Lid cap 60 Lid body

Claims

1. A container comprising a container body having a mouth portion and a cap body attached to the mouth portion, wherein the cap body has an outer cylinder portion forming an outer peripheral portion of the cap body, and a lid cap is detachably attached to the outer cylinder portion, on an inner peripheral surface of the outer cylinder portion, a cap-side upper screw thread portion and a cap-side lower screw thread portion positioned below the cap-side upper screw thread portion are discontinuously formed, on an outer peripheral surface of the mouth portion, a container-side upper screw thread portion and a container-side lower screw thread portion positioned below the container-side upper screw thread portion are discontinuously formed, when the cap body is rotated in a closing direction around the mouth portion, after the cap-side upper screw thread portion is screwed with the container-side upper screw thread portion, the cap-side lower screw thread portion is screwed with the container-side lower screw thread portion, and the cap body is attached around the mouth portion, in a mounted state, when a force to rotate the cap body in an opening direction is applied, the container-side lower screw thread portion interferes with the cap-side lower screw thread portion and further rotation is blocked, when the cap body is rotated in the opening direction while making the height position of the cap body different from the mounted state, the screwing of the cap-side lower screw thread portion with the container-side lower screw thread portion and the screwing of the cap-side upper screw thread portion with the container-side upper screw thread portion are released, and the cap body can be removed from the mouth portion.

2. The container according to claim 1, wherein the container-side and cap-side lower screw thread portions have a larger screw pitch than the container-side and cap-side upper screw thread portions.

3. on an outer peripheral surface of the mouth portion, a tightening restriction portion is formed between the container-side upper screw thread portion and the container-side lower screw thread portion in a height direction of the mouth portion, in the mounted state, when a force to rotate the cap body in the closing direction is applied, the tightening restriction portion interferes with the cap-side upper screw thread portion and blocks further rotation.

4. the mouth portion has a flange portion protruding radially outward below the container-side lower screw thread portion, and a rising rib protruding upward in the height direction is formed on an upper surface of the flange portion. After the screwing of the lower screw thread portion on the cap side with respect to the lower screw thread portion on the container side is completed, when the cap body is rotated in the closing direction, the cap body rides on the climbing rib, and the height positions of the lower screw thread portion on the container side and the lower screw thread portion on the cap side are made to coincide. The container according to any one of claims 1 to 3.

5. The container according to claim 4, wherein the climbing rib has an inclined portion whose height gradually increases in the closing direction.

6. When removing the cap body in the mounted state from the neck portion, the cap body is rotated in the opening direction while being pushed downward in the height direction of the neck portion. The container according to claim 4 or 5.

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