Dispensing container

Abstract

The aim is to provide a dispensing container that reduces the cost of creating molding dies by minimizing the number of components, thereby lowering manufacturing costs, without reducing the volume of viscous coating material, and without hindering the dispensing function even when the viscosity of the viscous coating material is low. [Solution] The device consists of a cap 1, an outer cylinder 2, an inner cylinder 3, and a receiving cylinder 4. The outer cylinder 2 has ratchet teeth 24 on its inner circumferential wall and a support column 26 with screw threads 25 on its bottom surface. The inner cylinder 3 has a ratchet pawl 36 at its lower end, and the receiving cylinder 4 has a screw cylinder 43 at its lower end, supporting the lower part of the viscous coating material M. The screw cylinder 43 has a screw groove 45 on its inner circumferential wall, into which the screw threads 25 on the support column 26 of the outer cylinder 2 are screwed. The outer cylinder 2 is rotated by the ratchet teeth 24 and ratchet pawl 36 only in the direction of dispensing the viscous coating material M, thereby raising the receiving cylinder 4 and dispensing the viscous coating material M.

Description

Technical Field

[0001] The present invention relates to a feeding container configured to feed viscous coating substances such as lip cream, lipstick, paste, and the like.

Background Art

[0002] Conventionally, as a feeding container of this type, for example, as shown in FIG. 8, it is a synthetic resin molded product, which includes a bottomed outer cylinder 51, a cap 52 detachably attached to the upper outer wall of the outer cylinder 51, an inner cylinder 53 detachably inserted into the upper inner wall of the outer cylinder 51, a guide cylinder 55 detachably inserted into the lower inner wall of the inner cylinder 53 and having a thread 54 formed on its inner wall, and a tray 57 having a screw cylinder 56 screwed onto the thread 54 of the guide cylinder 55 at the lower part (Patent Document 1).

[0003] Such a conventional feeding container is configured to move up and down the viscous coating substance supported by the tray 57 along the inner cylinder 53, and thus it is stated that even if the viscosity of the viscous coating substance is low, it will not interfere with the feeding function.

[0004] Also, as a feeding container of this type, for example, as shown in FIG. 9, it is a synthetic resin molded product, which includes a main body part 61, a cap 62 detachably attached to the upper outer wall of the main body part 61, an operating member 63 rotatably inserted into the lower inner wall of the main body part 61, a shaft member 64 inserted into the main body part 61, and a middle tray member 65 screwed onto the shaft member 64 and configured to move up and down within the main body part 61 (Patent Document 2).

[0005] Such a conventional feeding container is configured to move up and down the viscous coating substance placed on the middle tray member 65 along the shaft member 64, and thus it is stated that it can effectively feed a viscous coating substance with a high viscosity.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

[0007] However, the dispensing container described in Patent Document 1 consists of five components: an outer cylinder 51, a cap 52, an inner cylinder 53, a guide cylinder 55, and a receiving tray 57. Since it is made of molded synthetic resin, it has the problem of high manufacturing costs due to the high cost of creating the molding die.

[0008] Furthermore, the dispensing container described in Patent Document 2 is composed of five parts: a main body 61, a cap 62, an operating member 63, a shaft member 64, and a middle tray member 65. Since it is made of molded synthetic resin, it has the problem of high manufacturing costs due to the high cost of creating the molding die.

[0009] Furthermore, the dispensing container described in Patent Document 1 has a problem in that, in order to move the viscous coating material supported in the receiving tray 57 up and down, if the viscosity of the viscous coating material is low, there is no problem when raising it, but when lowering it the viscous coating material sticks to the inner wall of the inner cylinder 53 and does not peel off, causing the viscous coating material to break off midway and hindering the dispensing function again.

[0010] Furthermore, the dispensing container described in Patent Document 2 has the problem that, because a shaft member 64 is inserted inside the main body 61, the volume of the main body 61 decreases due to this shaft member 64, which in turn reduces the amount of viscous coating material inside. In addition, if the viscosity of the viscous coating material is low, the viscous coating material may break off midway, which can impair the dispensing function.

[0011] Therefore, the present invention aims to solve these conventional problems by reducing the cost of creating a molding die, thereby lowering manufacturing costs, without reducing the amount of viscous coating material, and without causing any problems with the dispensing function, even when the viscosity of the viscous coating material is low. [Means for solving the problem]

[0012] Therefore, the dispensing container of the present invention is a synthetic resin molded product composed of a cap 1, an outer cylinder 2, an inner cylinder 3, and a receiving cylinder 4. The cap 1 is a cylindrical body having a top surface 11, and its lower end is detachably attached to the upper end of the outer cylinder 2. The outer cylinder 2 is a cylindrical body having a bottom surface 21, and its inner circumferential wall is provided with a ratchet pawl 36 provided on the inner cylinder 3 and ratchet teeth 24 constituting a ratchet mechanism, and a vertically elongated support column 26 with screw threads 25 on its outer circumferential wall is erected in the center of the bottom surface 21. The inner cylinder 3 is rotatably inserted into the outer cylinder 2, and its lower part is provided with ratchet teeth 24 provided on the inner circumferential wall of the outer cylinder 2 and ratchet pawl 36 constituting a ratchet mechanism. The receiving cylinder 4 has a receiving tray 41 at the top and a screw cylinder 43 at the bottom. The receiving tray 41 supports the lower part of the viscous coating substance M filled in the inner cylinder 3. The screw cylinder 43 has a screw groove 45 on its inner circumferential wall. The screw threads 25 on the outer circumferential wall of the support column 26 of the outer cylinder 2 are screwed into this screw groove 45, and the ratchet mechanism rotates the outer cylinder 2 only in the direction of dispensing the viscous coating material M, thereby raising the receiving cylinder 4 and dispensing the viscous coating material M.

[0013] In the dispensing container of the present invention, the ratchet teeth 24 of the outer cylinder 2 are provided with numerous elongated teeth, each having a sliding surface 24a inclined at an obtuse angle and a locking surface 24b inclined at an acute angle, on the inner circumferential wall of the inner cylinder 3 at a position corresponding to the ratchet pawl 36 provided on the inner cylinder 3. The ratchet pawl 36 of the inner cylinder 3 consists of a pair of opposing elastic curved pieces 36a provided at the bottom and a pawl portion 36b that protrudes radially outward from the tip of the elastic curved piece 36a. When the outer cylinder 2 is to be rotated in the direction of dispensing the viscous coating substance M, the pawl portion 34b of the ratchet pawl 34 slides on the sliding surface 24a of the ratchet teeth 24, thereby allowing the outer cylinder 2 to rotate. Even if an attempt is made to rotate the outer cylinder 2 in the direction in which the viscous coating substance M is fed in, the pawl portion 34b of the ratchet pawl 34 strikes the locking surface 24a of the ratchet teeth 24, preventing the outer cylinder 2 from rotating.

[0014] In the dispensing container of the present invention, the inner cylinder 3 has a horizontal cross-sectional shape of the lower inner circumferential wall that is not a perfect circle, and the receiving cylinder 4 has a horizontal cross-sectional shape of the outer circumferential wall of the screw cylinder 43 that matches the horizontal cross-sectional shape of the inner circumferential wall of the inner cylinder 3. [Effects of the Invention]

[0015] As described above, the dispensing container of the present invention is composed of four components: a cap 1, an outer cylinder 2, an inner cylinder 3, and a receiving cylinder 4. Therefore, compared to conventional dispensing containers, the cost of creating the molding die is reduced, resulting in lower manufacturing costs.

[0016] Furthermore, since the internal volume of the inner cylinder 3 does not decrease in the dispensing container of the present invention, the content volume of the viscous coating substance M also does not decrease.

[0017] Furthermore, since the dispensing container of the present invention is designed so that the outer cylinder 2 cannot be rotated in the direction in which the viscous coating material M is dispensed, even when the viscosity of the viscous coating material M is low, the viscous coating material M will not detach from the receiving tray 41, and the dispensing function will not be hindered. [Brief explanation of the drawing]

[0018] [Figure 1] This is an external perspective view showing an embodiment of the payout container of the present invention. [Figure 2] This is an exploded perspective view of the payout container of the present invention shown in FIG. 1 as seen obliquely from above (excluding the viscous coating substance). [Figure 3] This is an exploded perspective view of the payout container of the present invention shown in FIG. 1 as seen obliquely from below (excluding the viscous coating substance). [Figure 4] This is an exploded cross-sectional view of the payout container of the present invention shown in FIG. 1 (excluding the viscous coating substance). [Figure 5] This is a longitudinal sectional view of the payout container of the present invention shown in FIG. 1. [Figure 6] This is a longitudinal sectional view showing a state where the viscous coating substance is paid out from the payout container of the present invention. [Figure 7] This is a horizontal sectional view taken along line A-A in FIG. 6. [Figure 8] This is a longitudinal sectional view showing an example of a conventional payout container. [Figure 9] This is a longitudinal sectional view showing another example of a conventional payout container.

Embodiments for Carrying out the Invention

[0019] Hereinafter, embodiments for implementing the payout container of the present invention will be described in detail based on the drawings.

[0020] The payout container of the present invention is a synthetic resin molded product, and as shown in FIGS. 1 to 5, it is composed of a cap 1, an outer cylinder 2, an inner cylinder 3, and a receiving cylinder 4.

[0021] As shown in the drawing, the cap 1 is a cylindrical body having a top surface 11, and an engaging rib 12 is provided on the inner peripheral wall at the lower end, and its lower end is detachably attached to the upper end of the outer cylinder 2.

[0022] As shown in the figure, the outer cylinder 2 is a cylindrical body having a bottom surface 21, and its outer diameter is the same as the outer diameter of the cap 1. A stepped cylinder 22 with a smaller diameter is provided at the upper end of the outer cylinder 2. By inserting the lower end of the cap 1 into the stepped cylinder 22 of the outer cylinder 2, the boundary between the cap 1 and the outer cylinder 2 becomes flush. Furthermore, a circumferential groove 23 is provided on the inner circumferential wall of the upper end of the outer cylinder 2, and ratchet teeth 24 that constitute a ratchet mechanism with a ratchet pawl 36 provided on the inner cylinder 3, which will be described later, are provided on the inner circumferential wall below the circumferential groove 23. As shown in Figures 4 and 7, the ratchet teeth 24 are elongated teeth having a sliding surface 24a inclined at an obtuse angle and a locking surface 24b inclined at an acute angle, and are provided in large numbers on the inner circumferential wall of the outer cylinder 2 at a position corresponding to the ratchet pawl 36 provided on the second stepped cylinder 35 of the inner cylinder 3, which will be described later. The ratchet teeth 24 only need to be provided on the inner circumferential wall of the outer cylinder 2 at a position corresponding to the ratchet pawl 36 provided on the second stepped cylinder 33 of the inner cylinder 3. However, due to the molding process of the synthetic resin, they are provided from that corresponding position downwards. This ratchet mechanism allows the outer cylinder 2 to rotate when the outer cylinder 2 is to be rotated in the direction of the arrow in Figure 7 (the direction in which the viscous coating substance M will be dispensed, as described later). The pawl portion 36b of the ratchet pawl 36 slides on the sliding surface 24a of the ratchet teeth 24, allowing the outer cylinder 2 to rotate. When the outer cylinder 2 is to be rotated in the opposite direction of the arrow in Figure 7 (the direction in which the viscous coating substance M will be dispensed, as described later), the pawl portion 36b of the ratchet pawl 36 hits the locking surface 24a of the ratchet teeth 24, preventing the outer cylinder 2 from rotating. Furthermore, a vertically elongated support column 26, with screw threads 25 on its outer circumferential wall, is erected in the center of the bottom surface 13 of the outer cylinder 2.

[0023] As shown in the figure, the inner cylinder 3 is a cylindrical body with a smaller diameter than the outer cylinder 2, and its lower part is rotatably inserted into the outer cylinder 2. A first stepped cylinder 32 with a smaller diameter is provided at the lower part via a first stepped portion 31, and an engaging rib 33 is provided on the outer circumferential wall of the first stepped cylinder 32. Furthermore, the horizontal cross-sectional shape of the inner circumferential wall of the first stepped cylinder 32 of the inner cylinder 3 is a shape other than a perfect circle, such as a drum shape, D shape, oval shape, or polygon. In addition, a second stepped cylinder 35 with an even smaller diameter is provided at the lower part of the first stepped cylinder 32 of the inner cylinder 3 via a second stepped portion 34, and a ratchet pawl 36 constituting a ratchet mechanism is provided at the lower part of this second stepped cylinder 35, along with ratchet teeth 24 provided on the inner circumferential wall of the outer cylinder 2. The ratchet pawl 36 consists of a pair of opposing elastic curved pieces 36a provided at the lower part of the second stepped cylinder 35, and a pawl portion 36b that protrudes radially outward from the tip of the elastic curved piece 36a. By loosely fitting the engaging rib 33 of the inner cylinder 3 into the circumferential groove 23 of the outer cylinder 2, the lower part of the inner cylinder 3 is made rotatable, and by inserting it into the upper part of the outer cylinder 2, the ratchet pawl 36 of the inner cylinder 3 engages with the ratchet teeth 24 of the outer cylinder 2, thereby forming a ratchet mechanism.

[0024] As shown in the figure, the receiving cylinder 4 has a receiving tray 41 at its upper end, the outer diameter of which is the same as the inner diameter of the inner cylinder 3, and a screw cylinder 43 at its lower end, which has a smaller diameter via a stepped portion 42. The receiving tray 41 has multiple vertical ribs 44 arranged radially on its inner circumferential wall, which firmly support the lower part of the viscous coating material M filled in the inner cylinder 3 by pressing it into these vertical ribs 44, causing the viscous coating material M to rise along the inner circumferential wall of the inner cylinder 3. The screw cylinder 43 has a horizontal cross-sectional shape on its outer circumferential wall that matches the horizontal cross-sectional shape on the inner circumferential wall of the inner cylinder 3, and a screw groove 45 is provided on its inner circumferential wall. The screw threads 25 provided on the outer circumferential wall of the support column 26 of the outer cylinder 2 are screwed into this screw groove 45, and the outer cylinder 2 is rotated by the ratchet mechanism only in the direction in which the viscous coating material M is dispensed, thereby causing the receiving cylinder 4 to rise. As a result, the viscous coating substance M supported in the receiving tray 41 of the receiving cylinder 4 rises along the inner circumferential wall of the inner cylinder 3 and is dispensed.

[0025] The dispensing container of the present invention, configured in this manner, is assembled according to the following procedure.

[0026] First, the receiving cylinder 4 is inserted from above the inner cylinder 3 so that the horizontal cross-sectional shape of the inner circumferential wall of the first stepped cylinder 32 of the inner cylinder 3 matches the horizontal cross-sectional shape of the outer circumferential wall of the threaded cylinder 43 of the receiving cylinder 4.

[0027] Next, the screw groove 45 provided on the inner circumferential wall of the screw cylinder 43 of the receiving cylinder 4, which is inserted into the inner cylinder 3 from above the outer cylinder 2, is screwed into the screw threads 25 provided on the outer circumferential wall of the support column 26 of the outer cylinder 2 until the lower end of the screw cylinder 43 abuts against the bottom surface 21 of the outer cylinder 2.

[0028] As a result, the pawl portion 36b of the ratchet pawl 36 of the inner cylinder 3 slides and rotates downward along the sliding surface 24a of the ratchet teeth 24 of the outer cylinder 2, causing the first stepped portion 31 of the inner cylinder 3 to come into contact with the upper end of the stepped cylinder 22 of the outer cylinder 2, and the engaging rib 33 of the inner cylinder 3 to be loosely fitted into the circumferential groove 23 of the outer cylinder 2.

[0029] Then, by filling the inner cylinder 3 with the viscous coating substance M from above up to the upper end of the inner cylinder 3, the viscous coating substance M is supported in the receiving tray 41 of the receiving cylinder 4.

[0030] Furthermore, by inserting the cap 1 from above the inner cylinder 3 and attaching the cap 1 to the outer cylinder 2 so that the engaging rib 12 at the lower end of the cap 1 contacts the outer peripheral wall of the stepped cylinder 22 at the upper end of the outer cylinder 2, the assembly can be completed as shown in Figures 1 and 5.

[0031] The dispensing container of the present invention, assembled using the procedure described above, is used as follows.

[0032] First, hold the outer cylinder 2 of the dispensing container of the present invention in the state shown in Figures 1 and 5, and pinch the cap 1 with your fingers to remove the cap 1 from the outer cylinder 2.

[0033] Next, by pinching the inner cylinder 3 with the fingers of one hand and the outer cylinder 2 with the fingers of the other hand, and attempting to rotate the outer cylinder 2 in the direction of the arrow in Figure 7 (the direction in which the viscous coating material M is dispensed), the pawl portion 36b of the ratchet pawl 36 slides along the sliding surface 24a of the ratchet teeth 24, allowing the outer cylinder 2 to rotate. As the screw groove 45 provided on the inner circumferential wall of the screw cylinder 43 of the receiving cylinder 4 rises along the screw thread 25 provided on the outer circumferential wall of the support column 26 of the outer cylinder 2, the receiving tray 41 of the receiving cylinder 4 also rises, and as shown in Figure 6, the upper end of the viscous coating material M is exposed above the inner cylinder 3, and the device can be used in this state. When the outer cylinder 2 is rotated, the horizontal cross-sectional shape of the inner circumferential wall of the first stepped cylinder 32 of the inner cylinder 3 matches the horizontal cross-sectional shape of the outer circumferential wall of the screw cylinder 41 of the receiving cylinder 4. Therefore, the receiving cylinder 4 also rises without rotating in accordance with the rotation of the outer cylinder 2, and the upper end of the viscous coating material M supported by the receiving tray 41 of the receiving cylinder 4 can be smoothly exposed.

[0034] After use, the cap 1 removed from the outer cylinder 2 can be reattached to the outer cylinder 2, returning it to its original state as shown in Figures 1 and 5, allowing the viscous coating substance M to be stored in a state where it is less likely to dry out or become contaminated.

[0035] Furthermore, even if one attempts to rotate the outer cylinder 2 in the opposite direction to the arrow in Figure 7 (the direction in which the viscous coating material M is fed in) before reattaching the cap 1 to the outer cylinder 2 after use, the pawl portion 36b of the ratchet pawl 36 will hit the locking surface 24a of the ratchet teeth 24, preventing the outer cylinder 2 from rotating. Consequently, the screw groove 45 provided on the inner circumferential wall of the screw cylinder 43 of the receiving cylinder 4 cannot be lowered along the screw thread 25 provided on the outer circumferential wall of the support column 26 of the outer cylinder 2, and the receiving tray 41 of the receiving cylinder 4 cannot be lowered either. Therefore, even if the viscosity of the viscous coating material M supported by the receiving tray 41 is low, the viscous coating material M will not break off midway.

[0036] Therefore, as mentioned earlier, the dispensing container of the present invention is composed of four components: a cap 1, an outer cylinder 2, an inner cylinder 3, and a receiving cylinder 4. Compared to conventional dispensing containers, the cost of creating the molding die is reduced, resulting in lower manufacturing costs. Furthermore, since there is no shaft member inserted inside the inner cylinder 3 as in conventional containers, the internal volume of the inner cylinder 3 does not decrease, nor does the amount of viscous coating material contained within it.

[0037] Furthermore, the dispensing container of the present invention is designed so that even when the viscosity of the viscous coating material M is low, the outer cylinder 2 cannot be rotated in the direction in which the viscous coating material M is dispensed. As a result, the viscous coating material M does not detach from the receiving tray 41, and the dispensing function is not impaired. [Explanation of symbols]

[0038] 1 cap 2 Outer cylinder 3 Inner cylinder 4 Receiver 11 Top surface 21 Bottom 24 ratchet teeth 24a Sliding surface 24b Locking surface 25 screw threads 26 Posts 36 Ratchet pawls 36a Elastic curved piece 36b Claw part 41 Saucer 43 Screw tube 45 Screw grooves M Viscous coating substance

Claims

1. It is a molded product made of synthetic resin, consisting of a cap, an outer cylinder, an inner cylinder, and a receiving cylinder. The aforementioned cap is a cylindrical body having a top surface, and its lower end is detachably attached to the upper end of the outer cylinder. The outer cylinder is a cylindrical body having a bottom surface, and the inner circumferential wall is provided with ratchet pawls and ratchet teeth that constitute a ratchet mechanism provided on the inner cylinder, and a vertically elongated support column with screw threads on its outer circumferential wall is erected in the center of the bottom surface 21. The inner cylinder is rotatably inserted into the outer cylinder, and the lower part is provided with ratchet teeth and ratchet pawls that constitute a ratchet mechanism, which are provided on the inner circumferential wall of the outer cylinder. The aforementioned receiving cylinder has a receiving tray at the top and a screw cylinder at the bottom. The receiving tray supports the lower part of the viscous coating material filled in the inner cylinder. The aforementioned screw cylinder has a screw groove on its inner circumferential wall, and a screw thread provided on the outer circumferential wall of the support column of the outer cylinder is screwed into this screw groove. The outer cylinder is rotated by the ratchet mechanism only in the direction of dispensing the viscous coating substance, thereby raising the receiving cylinder and dispensing the viscous coating substance.

2. The ratchet teeth of the outer cylinder consist of numerous elongated teeth, each having a sliding surface inclined at an obtuse angle and a locking surface inclined at an acute angle, provided on the inner circumferential wall of the inner cylinder 3 at a position corresponding to the ratchet pawl. The ratchet pawl of the inner cylinder consists of a pair of opposing elastic curved pieces provided at the bottom and a pawl portion that protrudes radially outward from the tip of these elastic curved pieces. When attempting to rotate the outer cylinder in the direction of dispensing the viscous coating substance, the pawl portion of the ratchet pawl slides on the sliding surface of the ratchet teeth, thereby allowing the outer cylinder to rotate. The dispensing container according to claim 1, characterized in that even if the outer cylinder is to be rotated in the direction in which the viscous coating substance is dispensed, the pawl portion of the ratchet pawl contacts the locking surface of the ratchet teeth, thereby preventing the outer cylinder from rotating.

3. The dispensing container according to claim 1 or 2, characterized in that the inner cylinder has a horizontal cross-sectional shape of the lower inner circumferential wall other than a perfect circle, and the receiving cylinder has a horizontal cross-sectional shape of the outer circumferential wall of the screw cylinder that matches the horizontal cross-sectional shape of the inner circumferential wall of the inner cylinder.

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