Cap body

Abstract

To provide a cap body that improves the ease of setting an inner cap, which has a cylindrical upper part and fits into the outer cap, which is formed in a tapered shape that narrows upwards and is roughly a regular polygon in plan view. [Solution] A cap body B comprising an outer cap B1 formed in a tapered shape that narrows upwards and is a substantially regular polygon in plan view, and an inner cap B2 fitted inside the outer cap, wherein the outer cap has vertical ribs 13 extending vertically along the corners of its inner surface, and the inner cap has a fitting wall portion 15 that fits with the inner circumference of the lower end of the outer cap, and a cylindrical mounting tube portion 17 that is erected from the inside of the fitting wall portion and can contact the vertical ribs, wherein the mounting tube portion has a mounting projection 20 formed at its upper end and shaped to be close to or in contact with the inner surface of the outer cap, an annular projection 21 that protrudes in the circumferential direction of the outer circumference, and a notch 22 recessed in the annular projection into which the vertical ribs fit.

Description

Technical Field

[0001] The present invention relates to a cap body attached so as to cover the mouth cylinder portion of a container body, and particularly relates to a cap body including an outer cap and an inner cap.

Background Art

[0002] A capped container including a container body having a square cross section for storing contents such as various cosmetics and drugs, and a cap body having a square cross section attached so as to cover the mouth cylinder portion of the container body has been conventionally known.

[0003] As this type of capped container, the cap includes an outer cap that is continuous with the outer periphery of the container body and formed in a polygonal shape, and an inner cap that is fixed inside the outer cap and fitted onto the mouth cylinder portion of the container body at its inner periphery, and it has been conventionally known that the inner cap has relief portions formed in a tapered shape at diagonal positions on the inner periphery of the outer cap. (See, for example, Patent Document 1).

Prior Art Literature

Patent Literature

[0004]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0005] In the cap body described in Patent Document 1, the outer cap is substantially square in plan view and has a shape standing upright upward, so it is easy to set the inner cap into the outer cap. However, due to design requirements, the outer cap needs to be tapered, narrowing towards the top. But if the top of the inner cap is cylindrical, and the outer cap is placed over the inner cap without aligning them properly, the top of the inner cap will interfere with the inner circumference of the outer cap, preventing it from being properly fitted.

[0006] The present invention aims to solve the above problems and provides a cap body that improves the ease of setting an inner cap, which has a lower part that fits into the outer cap and an upper part that is cylindrical, to an outer cap that is formed in a tapered shape that narrows upwards and is a substantially regular polygon in a plan view. [Means for solving the problem]

[0007] To solve the above problems, the present invention provides a cap body comprising an outer cap formed in a tapered shape that narrows upwards and is substantially a regular polygon in plan view, and an inner cap fitted inside the outer cap, wherein the outer cap has vertical ribs extending vertically along the corners of its inner surface, and the inner cap has a fitting wall portion that fits with the inner circumference of the lower end of the outer cap, and a cylindrical mounting cylinder portion that is erected from the inside of the fitting wall portion and can contact the vertical ribs, wherein the mounting cylinder portion has a mounting projection formed at its upper end that is close to or in contact with the inner surface of the outer cap, an annular projection that protrudes in the circumferential direction of the outer circumference, and a notch recessed in the annular projection into which the vertical ribs fit.

[0008] As an embodiment of the cap body, the outer cap has an open lower end and a tapered outer wall portion formed from a plurality of side tapered wall portions and a plurality of corner tapered wall portions connecting the side tapered wall portions, a substantially regular polygonal top wall that closes the upper end of the tapered outer wall portion, and vertical ribs that are vertically provided on the inner surface of the corner tapered wall portion. The inner cap has a fitting wall portion whose outer circumference fits onto the inner lower end of the tapered outer wall portion when fitted onto the outer cap, an upper wall portion extending inward from the upper inner circumference of the fitting wall portion, and a circular opening in the center of the upper wall portion. The structure is characterized by having a mounting cylinder portion that is erected at the opening, and the mounting projection portion of the mounting cylinder portion is characterized by having a plurality of high parts and a plurality of low parts that connect the high parts, and is formed in a continuous mountain shape, and the outer cap is characterized in that when it is temporarily set without alignment with the inner cap, the vertical ribs come into contact with the annular projection and stop midway, and when either is rotated the vertical ribs fit into the notches of the annular projection and the setting is completed. [Effects of the Invention]

[0009] By adopting the above configuration, the cap body of the present invention has an outer cap that is formed in a tapered shape that narrows upwards and is a roughly regular polygon in plan view. When setting the inner cap, which has a lower part that fits into the outer cap and a cylindrical upper part, even if the outer cap is temporarily set in a misaligned position relative to the inner cap, the vertical ribs of the outer cap will come into contact with the annular projection of the inner cap, preventing forced fitting. Furthermore, by rotating either one of the caps, the vertical ribs will fit into the notches of the annular projection, allowing for secure setting. [Brief explanation of the drawing]

[0010] [Figure 1] This figure shows an embodiment of the present invention, a cap body, attached to a container body; (a) is a top view, and (b) is a half-side cross-sectional view. [Figure 2] This is a view of a cap body, which is an embodiment of the present invention, from the corner side, where (a) is a side cross-sectional view and (b) is a view of (a) taken along the line X1-X1. [Figure 3]This is a view of a cap body, which is an embodiment of the present invention, from the side, where (a) is a side cross-sectional view and (b) is a view of (a) taken along the line X2-X2. [Figure 4] This figure shows an embodiment of the present invention in which the inner cap is temporarily set inside the outer cap of the cap body without alignment, where (a) is a side cross-sectional view and (b) is a view taken along the Y1-Y1 line in (a). [Modes for carrying out the invention]

[0011] Next, the cap body of the present invention will be described with reference to the drawings shown in the following embodiments. In the following explanation, as seen in Figure 1(b), the upward direction will be referred to as "up" and the downward direction as "down".

[0012] (Examples) In Figure 1, A is a container body that contains and dispenses contents, and B is a cap body attached to the top of container body A, comprising an outer cap B1 and an inner cap B2 fitted inside the outer cap B1. The outer circumferences of the lower ends of container body A and cap body B are formed in a substantially regular polygon (substantially square in this embodiment) consisting of gently curved sides and corners in a plan view, and the outer circumference of cap body B is formed in a tapered shape that narrows upwards. In this embodiment, the container A consists of a container body A1 that holds the liquid contents, a pump member A2 that is attached to the mouth portion 3 of the container body A1 and sucks up and sprays the liquid contents, and a mounting cap A3 that attaches the pump member A2 to the mouth portion 3 of the container body A1.

[0013] As shown in Figure 1, the container body A1 contains the liquid contents and is composed of four outwardly bulging, gently curved side wall portions 1a and four corner wall portions 1b connecting each of the side wall portions 1a, and has a bottomed body portion 1 that is roughly square in plan view, a shoulder portion 2 that extends inward from the upper end of the body portion 1, and a mouth portion 3 that opens in a circular shape in the center of the shoulder portion 2 and extends upward.

[0014] The pump component A2 consists of a pump section A2a, which is inserted into the mouth section 3 of the container body A1 to seal the opening and draw up the contents, and a nozzle section A2b, which is attached to the top of the pump section A2a and, when pressed down, ejects the drawn-up contents from the nozzle opening.

[0015] The mounting cap A3 is formed in a ring shape and comprises an upper wall 5 having an opening, the lower surface of which abuts against the flange of the pump section A2a; an outer cylinder wall 6 extending vertically from the outer edge of the upper wall 5, the inner circumference of which is attached to the outer circumference of the mouth section 3 of the container body A1; a flange section 7 protruding from the lower end of the outer circumference of the outer cylinder wall 6; and a guide cylinder 8 erected from the upper surface of the upper wall 5 to guide the vertical movement of the nozzle section A2b. When mounted, the pump section A2a is clamped and fixed between the lower surface of the upper wall 5 and the upper surface of the mouth section 3 via a packing. Multiple locking protrusions 9 are arranged circumferentially at equal intervals on the lower outer circumference of the outer cylinder wall 6.

[0016] As shown in Figures 1 to 3, the outer cap B1 has an open lower end and is composed of four gently curved side tapered wall sections 10a, four corner tapered wall sections 10b connecting each of the side tapered wall sections 10a, a tapered outer wall section 10 which is formed in a roughly square shape in plan view and tapers upward from the lower end, and a roughly square top wall 11 which closes the upper end of the tapered outer wall section 10. Multiple fitting sections 12 for attaching the inner cap B2 when the cap body B is set are arranged at predetermined intervals on the inner lower end of the tapered outer wall section 10 (near the corners of the corner tapered wall sections 10b). The tapered outer wall portion 10 consists of four corner tapered wall portions 10b, each having a vertical surface portion 13a extending vertically downward from the upper end to a predetermined height, and a lower end surface portion 13b extending horizontally outward from the lower end of the vertical surface portion 13a. Vertical ribs 13, with a plate thickness of α and formed in the shape of a right triangle, are arranged on the inner surface of each portion.

[0017] When the inner cap B2 is fitted onto the outer cap B1, the inner cap B2 comprises: a fitting wall portion (15) formed into a substantially square shape in a plan view, which includes four side portions (15a) whose outer peripheries are aligned and fitted with the inner lower end of the tapered outer wall portion (10), and four corner portions (15b) connecting the respective side portions (15a); an upper wall portion (16) extending inward from the upper end of the inner periphery of the fitting wall portion (15); and a cylindrical mounting cylinder portion (17) which is erected with a circular opening opened at the center of the upper wall portion (16), and is mounted such that its outer periphery abuts against the vertical surface portions (13a) of the vertical ribs (13) of the outer cap B1 at four positions.

[0018] On the outer periphery of the fitting wall portion (15), a plurality of fitting protrusions (18) that fit with the fitting portion (12) formed at the inner lower end of the tapered outer wall portion (10) when the cap body B is assembled are arranged (near the corner portions (15b)). Furthermore, after the cap body B is assembled, when the container body A is closed, the lower end surface of the fitting wall portion (15) is flush with the lower surface of the tapered outer wall portion (10) of the outer cap B1, and covers the upper surface of the shoulder portion (2) of the container main body A1.

[0019] The mounting cylinder portion (17) is formed with such a height that the lower end portion abuts against the upper surface of the flange portion (7) of the mounting cap A3 when the container body A is closed by the cap body B, and a locking portion (19) that engages and locks with the plurality of locking protrusions (9) protruding from the lower outer periphery of the outer cylinder wall (6) is recessed in the lower inner periphery.

[0020] As shown in Fig. 2(a) and Fig. 3(a), the mounting cylinder portion (17) has, at its upper part, a mounting protrusion portion (20) which consists of four high portions (20a) and four low portions (20b) connecting the respective high portions (20a), and protrudes in the shape of four consecutive peaks. The mounting projection 20 is formed such that when the cylindrical mounting tube portion 17 is inserted into the tapered outer wall portion 10 of the outer cap B1, which has a roughly square cross-section and is tapered in a way that narrows upward from the lower end, it does not come into contact with the inner surface near the center of the four tapered side wall portions 10a which have a shorter diameter. The height at which it approaches or comes into contact with the inner surface gradually increases as it moves from the center of the tapered side wall portions 10a which have a shorter diameter towards the corner tapered wall portion 10b which has a gradually increasing diameter, and at the inside of the vertical surface portion 13a of the vertical rib 13 of the corner tapered wall portion 10b which has the longest diameter, the highest point 20a is formed so that it approaches or comes into contact with the lower surface of the top wall 11.

[0021] On the outer circumference of the mounting cylinder portion 17, an annular projection 21 for temporary setting is provided at a predetermined height, and the lower end surface portion 13b of the vertical rib 13 abuts against the upper surface during the setting of the cap body B. Furthermore, the annular projection 21 has four notches 22 that are the same thickness as or slightly wider than the plate thickness α of the vertical rib 13, at the positions where the vertical rib 13 of the outer cap B1 fits when the cap body B is set (either at the center of the corner 15b of the fitting wall portion 15 of the inner cap B2 or at the center of the high portion 20a of the mounting projection 20).

[0022] Next, the usage and effects of the cap body B in this embodiment will be described. In this embodiment, the cap body B is formed by separately molding the outer cap B1 and the inner cap B2, and then, as shown in Figure 4, the outer cap B1 is placed over the inner cap B2 from above. In this embodiment, when the outer cap B1 is fitted by aligning the center of the tapered outer wall portion 10a of the outer cap B1 with the center of the side portion 15a of the fitting wall portion 15 of the inner cap B2 (or the center of the lower portion 20b of the mounting projection 20 of the mounting cylinder portion 17), the vertical rib 13 formed on the corner tapered wall portion 10b of the outer cap B1 passes through the notch 22 recessed in the annular projection 21 on the outer circumference of the mounting cylinder portion 17, and the outer cap B1 descends against the inner cap B2 without resistance. Finally, the lower end surface portion 13b of the vertical rib 13 of the outer cap B1 comes into contact with the upper surface of the upper wall portion 16 of the inner cap B2, stopping the descending of the outer cap B1.

[0023] Furthermore, the mounting projection 20 of the mounting cylinder portion 17 of the inner cap B2 engages with the inner upper part of the tapered outer wall portion 10 of the outer cap B1, and the inner lower end and fitting portion 12 of the tapered outer wall portion 10 of the outer cap B1 engage with the outer circumference and fitting projection 18 of the fitting wall portion 15 of the inner cap B2, thereby forming a cap body B in which the inner cap B2 is set inside the outer cap B1.

[0024] When the cap body B is assembled, the shape of the mounting projection 20 of the mounting cylinder portion 17 of the inner cap B2 is close to or in contact with the inner upper part of the tapered outer wall portion 10 of the outer cap B1. Therefore, when the inside of the mounting cylinder portion 17 is viewed from below, the inside of the cylindrical mounting cylinder portion 17 and the inner upper part and top wall 11 of the tapered outer wall portion 10 appear to be formed in a continuous manner. In particular, the vertical ribs 13 within the tapered outer wall portion 10 of the outer cap B1 are hidden from view by the peaks of the respective high portions 20a of the mounting projection 20.

[0025] Furthermore, in this embodiment, if the outer cap B1 is placed over the outer cap B2 without the central part of the tapered side wall portion 10a of the tapered outer wall portion 10 being aligned with the central part of the side portion 15a of the fitting wall portion 15 (or the central part of the lower portion 20b of the mounting projection 20 of the mounting cylinder portion 17), as shown in Figure 4, the vertical ribs 13 of each corner tapered wall portion 10b of the outer cap B1 will not align with the notches 22 on the outer circumference of the mounting cylinder portion 17, and the lower end surfaces 13b of each vertical rib 13 will come into contact with the upper surface of the annular projection 21, preventing the outer cap B1 from descending and resulting in a temporary set state.

[0026] If the outer cap B1 and inner cap B2 do not have the vertical ribs 13 and annular projections 21, then unless the outer cap B1 and inner cap B2 are aligned and set, the insertion will proceed with the raised portion 20a of the mounting projection 20 of the mounting cylinder portion 17 of the inner cap B2 positioned inside the tapered wall portion 10a of the tapered outer wall portion 10 of the outer cap B1. The tapered wall portion 10a will ride up on the tip of the raised portion 20a, causing the outer cap B1 and inner cap B2 to be forcibly fitted together, resulting in the roughly square shapes of the outer cap B1 and inner cap B2 not matching in plan view, and preventing them from being fully installed. Furthermore, if the tapered side wall portion 10a is forced into place while riding on the raised portion 20a of the mounting projection 20, a large amount of force will be required to remove the outer cap B1 and inner cap B2 in order to correct the fit.

[0027] In this embodiment, if the outer cap B1 and the inner cap B2 are not aligned, as shown in Figure 4, the lower end surface 13b of the vertical rib 13 abuts against the upper surface of the annular projection 21, preventing the outer cap B1 from descending, thus creating a temporary set state that prevents fitting in the wrong position. In a temporary set state where the downward movement of the outer cap B1 is stopped, the outer cap B1 or the inner cap B2 is rotated until their roughly square shapes align in a plan view. At this point, the vertical ribs 13 of the outer cap B1 pass through the notches 22 recessed in the annular projection 21, and the outer cap B1 descends without resistance relative to the inner cap B2. As shown in Figures 2 and 3, this results in a cap body B in which the inner cap B2 is set without any problems inside the outer cap B1.

[0028] Next, in this embodiment, the container body A is constructed by attaching the mounting cap A3 to the pump section A2a, then attaching the nozzle section A2b from above the pump section A2a, and finally attaching the pump member A2 to the mounting cap A3. When the mounting cap A3, to which the pump component A2 is attached, is attached to the container body A1 filled with the liquid, it becomes a container body A containing the liquid.

[0029] In this embodiment, as shown in Figure 1, the outer cap B1 matches the shape of the outer circumference of the container body A1, which is formed to be approximately square in plan view, and is placed over the container body A from above to close the lid. At that time, the mounting cap A3 of container body A comes into contact with the upper surface of the flange portion 7 of the outer cylinder wall 6, and the lower end surface of the mounting cylinder portion 17 of the inner cap B2 comes into contact with it, preventing the cap body B from descending. At the same time, the locking projection 9 of the outer cylinder wall 6 fits into the locking portion 19 of the mounting cylinder portion 17 and locks in place, thereby aligning the cap body B with container body A and closing it so that it does not fall off.

[0030] When using the contents, first grasp the outer circumference of cap body B with your fingers and pull it up. This releases the engagement between the locking portion 19 of the mounting cylinder portion 17 of inner cap B2 and the locking projection 9 of the outer cylinder wall 6 of mounting cap A3, allowing you to easily remove cap body B from container body A and open the lid. When the nozzle A2b of the opened container A is pressed down relative to the pump A2a, the liquid contents inside the container A1 are drawn up and dispensed from the nozzle opening of nozzle A2b for use.

[0031] In this embodiment, the cap body B is attached to the container body A with a pump, but it is not limited to this, and can be used as a so-called overcap, attached to cover the mouth portion 3 of the container body A. [Industrial applicability]

[0032] The cap body of the present invention is formed in a tapered shape that narrows upwards and is roughly a regular polygon in plan view. When setting the inner cap, which has a lower part that fits onto the outer cap and a cylindrical upper part, even if the outer cap is temporarily set in a misaligned position relative to the inner cap, the vertical ribs of the outer cap will contact the annular projection of the inner cap, preventing forced fitting. Furthermore, by rotating either one of the caps, the vertical ribs will fit into the notches of the annular projection, ensuring a secure fit. Therefore, it is suitable as a cap body for a capped container where design is important. [Explanation of Symbols]

[0033] A container A1 Container body A2 Pump component A2a Pump section A2b Nozzle section A3 mounting cap B Cap Body B1 Outer cap B2 Inner Cap α Plate thickness 1 Torso 1a Side wall 1b Corner wall 2 Shoulder 3 Mouth part 5 Upper wall 6. Outer cylinder wall 7. Flange section 8 Guide tube 9 Locking projection 10 Tapered outer wall section 10a Side tapered wall section 10b Corner tapered wall section 11. Summit Wall 12 Fitting part 13 Vertical Ribs 13a Vertical section 13b Lower end surface part 15 Fitting wall section 15a Edge 15b Corner 16 Upper wall 17 Mounting cylinder 18. Fitting projection 19 Locking part 20 Mounting protrusion 20a Takabe 20b lower part 21 Annular projection 22 Notch

Claims

1. A cap body comprising an outer cap formed in a tapered shape that narrows upwards and is approximately a regular polygon in plan view, and an inner cap fitted inside the outer cap, The outer cap has vertical ribs that extend vertically along the inner corners. The inner cap has a fitting wall portion that fits with the inner circumference of the lower end of the outer cap, and a cylindrical mounting tube portion that is erected from the inside of the fitting wall portion and can come into contact with the vertical rib. The cap body is characterized by having a mounting protrusion formed at the upper end, which is shaped to be close to or in contact with the inner surface of the outer cap, an annular projection projecting in the circumferential direction on the outer circumference, and a notch recessed in the annular projection into which a vertical rib fits.

2. The outer cap has an open lower end and a tapered outer wall portion formed from multiple side tapered wall portions and multiple corner tapered wall portions connecting the side tapered wall portions, a substantially regular polygonal top wall that closes the upper end of the tapered outer wall portion, and vertical ribs that are vertically installed on the inner surface of the corner tapered wall portion. The cap body according to claim 1, characterized in that the inner cap has a fitting wall portion whose outer circumference fits onto the inner lower end of the tapered outer wall portion when fitted onto the outer cap, an upper wall portion extending inward from the inner upper end of the fitting wall portion, and a mounting cylinder portion erected with a circular opening in the center of the upper wall portion.

3. The cap body according to claim 1 or 2, characterized in that the mounting projection of the mounting cylinder portion has a plurality of high parts and a plurality of low parts connecting the high parts, and is formed in a continuous mountain shape.

4. The cap body according to claim 1 or 2, characterized in that when the outer cap is temporarily set without alignment with the inner cap, the vertical ribs abut against the annular projection and stop midway, and when either side is rotated, the vertical ribs fit into the notches of the annular projection and the setting is completed.

5. The cap body according to claim 3, characterized in that when the outer cap is temporarily set without alignment with the inner cap, the vertical ribs abut against the annular projection and stop midway, and when either side is rotated, the vertical ribs fit into the notches of the annular projection and the setting is completed.

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