Dispensing container

Abstract

We propose a dispensing container that offers excellent assembly capabilities and prevents malfunctions during operation involving the male and female threaded sections. [Solution] The dispensing container 100 comprises a screw shaft member 3 having a first male screw portion 3a on its outer circumference, a hollow screw member 4 having an inner hollow portion 4a with a first female screw portion 4c on its inner circumference and a slit 4e that cuts out the inner hollow portion 4a along the central axis O, an extrusion member 5 having a seal portion 5c that slidably contacts the inner circumference of the case cylinder 1, a movable cylinder member 6 that moves the extrusion member 5 in a direction along the central axis O while restricting its rotation around the central axis O relative to the case cylinder 1, and an annular body 7 attached to the radially outer side of the inner hollow portion 4a to prevent elastic deformation of the inner hollow portion 4a radially outward when the first female screw portion 4c and the first male screw portion 3a are screwed together, the annular body 7 having a projection 7b that is inserted into the slit 4e to prevent elastic deformation of the inner hollow portion 4a radially inward.

Description

Technical Field

[0001] The present invention relates to a feeding container.

Background Art

[0002] There is known a feeding container in which a pushing member is accommodated inside a case cylinder, and when an operating portion is rotated with respect to the case cylinder, the pushing member advances with respect to the case cylinder, and thereby the contents accommodated inside the case cylinder are fed out by the pushing member (see, for example, Patent Document 1).

[0003] The feeding container shown in Patent Document 1 includes a case cylinder and an operating portion (operating member) rotatably held with respect to the case cylinder. Inside the case cylinder, a screw shaft member, a hollow screw member (hollow screw shaft), a pushing member, and a movable cylinder member (engaging cylinder) are provided. The screw shaft member, the hollow screw member, and the pushing member are provided with male screw portions and female screw portions. When the operating portion is rotated, the screw shaft member rotates together with the operating portion, whereby the hollow screw member advances while rotating, and further the movable cylinder member and the pushing member are configured to advance while being prevented from rotating.

[0004] The hollow screw member shown in Patent Document 1 includes a slit extending along a central axis, and the hollow screw member can be elastically deformed radially outward by this slit. When assembling the above-described feeding container, the male screw portion of the screw shaft member and the female screw portion of the hollow screw member must be screwed together, and for this purpose, it is usually necessary to repeatedly rotate the hollow screw member with respect to the screw shaft member. However, in the above-described feeding container, since the female screw portion can be fitted into the male screw portion by elastically deforming the hollow screw member radially outward, it is not necessary to repeatedly rotate the hollow screw member with respect to the screw shaft member, and it can be easily assembled.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

[0006] Incidentally, when the contents contained in the case tube are in close contact with the inner surface of the case tube, a strong load is applied to the male and female threaded parts when the operating part is rotated to dispense the contents from the case tube. This may cause the hollow screw member with a slit to elastically deform radially outward, raising concerns that the screwed-in male and female threaded parts may come apart. To prevent the hollow screw member from expanding radially outward, one possible method is to attach a ring-shaped member to the radially outer side of the hollow screw member. However, if such a member is used, for example, if the outer diameter of the hollow screw member becomes large due to variations during molding, this member may cause the hollow screw member to bend radially inward. In this case, there are concerns that the male and female threaded parts will press strongly against each other, requiring a large force during operation.

[0007] In view of these points, the present invention aims to propose a dispensing container that is easy to assemble and can prevent malfunctions during operation involving the male and female threaded portions. [Means for solving the problem]

[0008] The present invention relates to a hollow screw portion comprising: a case cylinder; an operating part rotatably held relative to the case cylinder around the central axis of the case cylinder; a screw shaft member rotatable with the operating part and having a first male screw portion on its outer circumference; an inner hollow portion having a first female screw portion on its inner circumference that screws into the first male screw portion and a second male screw portion on its outer circumference; and a slit cut out along the central axis of the inner hollow portion to allow radial elastic deformation of the inner hollow portion and to allow the first female screw portion and the first male screw portion to fit together. An extrusion member having a material, an outer hollow portion having a second female thread portion that screws into the second male thread portion on its inner circumferential surface, and a sealing portion that slidably contacts the inner circumferential surface of the case cylinder, and a movable cylinder member located between the outer hollow portion and the case cylinder, which moves the extrusion member in a direction along the central axis while restricting its rotation around the central axis relative to the case cylinder, wherein when the operating part is rotated to one side in the circumferential direction relative to the case cylinder, the extrusion member advances relative to the case cylinder, Furthermore, the device includes an annular body attached to the radially outer side of the inner hollow portion, which prevents elastic deformation of the inner hollow portion radially outward when the first female thread portion and the first male thread portion are screwed together, wherein the annular body has a projection that is inserted into the slit and prevents elastic deformation of the inner hollow portion radially inward. [Effects of the Invention]

[0009] According to the dispensing container of the present invention, the hollow screw member can be elastically deformed radially outward by the slit, and the first male thread portion of the screw shaft member and the first female thread portion of the hollow screw member can be easily fitted together, resulting in excellent assembly performance. Furthermore, this dispensing container is equipped with an annular body, and by attaching the annular body to the hollow screw member combined with the screw shaft member, the elastic deformation of the hollow screw member radially outward is prevented by this annular body, thereby preventing the first male thread portion and the first female thread portion from coming apart. In addition, the annular body is equipped with a projection, and this projection is inserted into the slit, preventing the elastic deformation of the hollow screw member radially inward, so that the first male thread portion and the first female thread portion do not press strongly against each other. In other words, the annular body and the projection prevent malfunctions during operation involving the male and female thread portions. [Brief explanation of the drawing]

[0010] [Figure 1] This is a half-cross-sectional view showing one embodiment of the dispensing container according to the present invention. [Figure 2A] Figure 2C is a semi-cross-sectional view of the hollow screw member shown in Figure 1, along line AA. [Figure 2B] Figure 2C is a semi-cross-sectional view of the hollow screw member shown in Figure 1, along the BB shown. [Figure 2C] Figure 1 is a bottom view of the hollow screw member. [Figure 3A] Figure 3C is a semi-cross-sectional view of the extruded member shown in Figure 1, along the CC line. [Figure 3B] Figure 3C is a semi-cross-sectional view of the extruded member shown in Figure 1, along the line DD shown in Figure 3C. [Figure 3C] Figure 1 is a bottom view of the extruded member. [Figure 4A] This is a plan view of the movable cylindrical member shown in Figure 1. [Figure 4B] Figure 4A shows a semi-cross-sectional view of the movable cylindrical member shown in Figure 1, along the line EE. [Figure 4C] Figure 4A shows a semi-cross-sectional view of the movable cylindrical member shown in Figure 1, along the FF shown in Figure 4A. [Figure 4D] It is a bottom view of the movable cylinder member shown in FIG. 1. [Figure 5A] It is a half-sectional view in side view in a state where the hollow screw member and the extrusion member shown in FIG. 1 are combined. [Figure 5B] It is a bottom view of FIG. 5A. [Figure 6] It is a view showing a state where an annular body is pressed by a jig after further combining a movable cylinder member with what is shown in FIG. 5A. [Figure 7A] It is a cross-sectional view in side view in a state where an annular body is attached to the outer side in the radial direction of the inner hollow part after the state shown in FIG. 6. [Figure 7B] It is a cross-sectional view taken along G-G shown in FIG. 7B.

Mode for Carrying Out the Invention

[0011] Hereinafter, an embodiment of the feeding container according to the present invention will be described with reference to the drawings. In this specification and the like, the vertical direction is the direction along the illustrated central axis O, the side where the tip of the case cylinder 1 to be described later is located is "up", and the side where the operation unit main body 10 is located is "down". In this specification and the like, the movement from the operation unit main body 10 toward the tip of the case cylinder 1 may be referred to as forward movement, the side where the tip of the case cylinder 1 is located may be referred to as "front", and the side where the operation unit main body 10 is located may be referred to as "rear". And the radial direction is the direction orthogonal to the central axis O in a plane perpendicular to the central axis O, and the circumferential direction is the direction that circulates around the central axis O in this plane.

[0012] FIG. 1 is a view showing a feeding container 100 which is an embodiment of the feeding container according to the present invention. As shown in FIG. 1, the feeding container 100 includes a case cylinder 1, a unit 2, and an operation unit 8. The unit 2 is composed of a screw shaft member 3, a hollow screw member 4, an extrusion member 5, a movable cylinder member 6, and an annular body 7, and the operation unit 8 is composed of a connecting member 9, an operation unit main body 10, and an inner tool 11. Although not shown, the feeding container 100 includes a lid body in a covered cylindrical shape that covers the case cylinder 1 and is detachably held by the inner tool 11.

[0013] The contents stored in the dispensing container 100 are, for example, cosmetics, which are relatively soft and highly viscous, and are stored in the space partitioned by the case cylinder main body 1a and the seal part 5c described later. In a general dispensing container, it has a function of dispensing the contents and a function of rewinding them. However, when trying to rewind the contents by retracting the seal part 5c when storing relatively soft and highly viscous contents, such contents tend to stick to the inner peripheral surface of the case cylinder main body 1a, etc., so there is a risk that only the seal part 5c will retract without the contents moving. Therefore, the dispensing container 100 of the present embodiment is configured so that the function of rewinding the contents does not act. Further, each member constituting the dispensing container 100 is formed of a synthetic resin, and in the present embodiment, polypropylene having excellent moisture barrier properties is used. For this reason, even when storing contents with a large amount of moisture, the amount of moisture contained in the contents can be effectively maintained.

[0014] The case cylinder 1 includes a case cylinder main body 1a that is cylindrical about the central axis O. An engaging convex portion 1b that projects radially inward is provided at an intermediate portion in the vertical direction on the inner peripheral surface of the case cylinder main body 1a. The engaging convex portion 1b engages with the second longitudinal groove portion 6c shown in FIG. 4C and is located at a position shifted 90° about the central axis O with respect to the side view shown in FIG. 1. Therefore, the engaging convex portion 1b is shown by a virtual line in FIG. 1. Further, on the inner peripheral surface of the case cylinder main body 1a, there are provided a stopper convex portion 1c that is located below the engaging convex portion 1b and projects radially inward, and a gear portion 1d that is located below the stopper convex portion 1c and is composed of a plurality of protrusions spaced apart in the circumferential direction. Also, at the lower end portion of the case cylinder main body 1a, an engaging holding portion 1e having a semi-circular cross-sectional shape is provided.

[0015] As shown in Figure 1, the screw shaft member 3 is cylindrical with a central axis O as its center, and includes a screw shaft 3b with a male thread portion (first male thread portion 3a) on its outer circumferential surface. Below the screw shaft 3b, a cylindrical lower shaft 3c is provided. Multiple protrusions are provided on the outer circumferential surface of the lower shaft 3c, located below the first male thread portion 3a and spaced apart in the circumferential direction. These protrusions function as a rotation stopper between the screw shaft member 3 and the operating part 8. Hereinafter, these protrusions will be referred to as the unit-side rotation stopper portion 3d. Below the unit-side rotation stopper portion 3d on the outer circumferential surface of the lower shaft 3c, a unit-side detachment stopper portion 3e is provided, which protrudes radially outward and holds the screw shaft member 3 in place relative to the operating part 8.

[0016] As shown in Figures 1 and 2A to 2C, the hollow screw member 4 is cylindrical with respect to a central axis O and has a hollow inner hollow portion 4a located radially outward from the screw shaft 3b. A disc-shaped top wall portion 4b is provided at the upper end of the inner hollow portion 4a. A female screw portion (first female screw portion 4c) that screws into the first male screw portion 3a is provided on the inner circumferential surface of the inner hollow portion 4a. In this embodiment, the first female screw portion 4c is provided only near the lower end of the inner hollow portion 4a. A male screw portion (second male screw portion 4d) is provided on the outer circumferential surface of the inner hollow portion 4a.

[0017] Furthermore, the hollow screw member 4 is provided with a first slit 4e that cuts out the inner hollow portion 4a from below to above. The first slit 4e corresponds to the "slit" as described herein. In this embodiment, the first slit 4e cuts out the inner hollow portion 4a from the lower end of the inner hollow portion 4a to the middle of the inner hollow portion 4a in the vertical direction. A pair of first slits 4e are provided on either side of the central axis O, and the hollow screw member 4 is elastically deformable so that the lower part of the inner hollow portion 4a expands radially outward. At the lower end of the inner hollow portion 4a, there is a retaining engagement portion 4f that protrudes radially outward and is claw-shaped. Above the retaining engagement portion 4f, there is a convex portion (contact convex portion 4g) that protrudes radially outward on the outer circumferential surface of the inner hollow portion 4a. The contact convex portion 4g contacts the inner circumferential surface of the annular body 7 when the annular body 7 is attached to the hollow screw member 4, as will be described later.

[0018] As shown in Figures 1 and 3A to 3C, the extruded member 5 is cylindrical with respect to a central axis O and includes a hollow outer hollow portion 5a located radially outside the inner hollow portion 4a. A top wall portion 5b is provided at the upper end of the outer hollow portion 5a. A seal portion 5c is provided on the outer edge of the top wall portion 5b, which extends upward while expanding in diameter, and whose tip is slidably in contact with the inner circumferential surface of the case cylinder body 1a. A female thread portion (second female thread portion 5d) that screws into the second male thread portion 4d is provided on the inner circumferential surface of the outer hollow portion 5a. In this embodiment, the second female thread portion 5d is provided only near the lower end of the outer hollow portion 5a.

[0019] The outer hollow portion 5a is provided with a second slit 5e that cuts out the outer hollow portion 5a from below to above. In this embodiment, the second slit 5e cuts out the outer hollow portion 5a from the lower end to the middle of the outer hollow portion 5a in the vertical direction. A pair of second slits 5e are provided on either side of the central axis O, and the extruded member 5 is elastically deformable so that the lower part of the outer hollow portion 5a expands radially outward.

[0020] Furthermore, the extruded member 5 of this embodiment is provided with a guide projection 5g that protrudes radially outward from the outer peripheral surface at the lower end of the outer hollow portion 5a.

[0021] As shown in Figures 1 and 4A to 4D, the movable cylinder member 6 is cylindrical with respect to a central axis O and includes a movable cylinder body 6a located radially outward from the outer hollow portion 5a. The inner circumferential surface of the movable cylinder body 6a is provided with a vertical groove (first vertical groove 6b) extending in the vertical direction. The guide projection 5g engages with the first vertical groove 6b. The outer circumferential surface of the movable cylinder body 6a is provided with a vertical groove (second vertical groove 6c) extending in the vertical direction. As shown in Figures 4A to 4D, the second vertical groove 6c is located at a position offset by 90° from the first vertical groove 6b with respect to the central axis O, and in the half cross-sectional view shown in Figure 1, the second vertical groove 6c is indicated by a dashed line. The engaging projection 1b provided on the case cylinder 1 engages with the second vertical groove 6c. As shown in Figure 4C, in this embodiment, a through opening 6d is provided at the lower part of the movable cylinder member 6, which cuts out the movable cylinder body 6a in a semicircular shape.

[0022] In this embodiment, the annular body 7 is circular and, as shown in Figure 1, is located radially outward from the inner hollow portion 4a. As shown in Figure 4B, the inner circumferential surface of the annular body 7 is provided with a retaining engagement portion 7a that protrudes radially inward and engages with the retaining engagement portion 4f.

[0023] The annular body 7 is also provided with projections 7b that protrude radially inward. As will be described later, the projections 7b are inserted into the inside of the first slit 4e, and in this embodiment, a pair of projections 7b are provided on either side of the central axis O (see Figure 4D).

[0024] Figures 4A to 4D show the initial state of the movable cylinder member 6 and the annular body 7 in this embodiment. The annular body 7 is integrally connected to the inner circumferential surface of the movable cylinder body 6a via a thin-walled weakened portion 6e provided on the movable cylinder member 6. As shown in Figure 4D, the annular body 7 is integrally connected to the movable cylinder member 6 at a position where the projection 7b is offset by 90° in the circumferential direction from the first longitudinal groove portion 6b.

[0025] The connecting member 9 has an inner circumferential wall portion 9a that is roughly cylindrical. Above the inner circumferential wall portion 9a, there is an operating part side anti-rotation portion 9b, which is made up of a plurality of protrusions provided at intervals in the circumferential direction and engages with the unit side anti-rotation portion 3d to prevent the screw shaft member 3 from rotating relative to the connecting member 9. On the inner circumferential surface of the inner circumferential wall portion 9a, there is an operating part side anti-detachment portion 9c that protrudes radially inward and prevents the screw shaft member 3 from coming loose relative to the connecting member 9.

[0026] The connecting member 9 also includes a connecting wall portion 9d that extends radially outward from the inner peripheral wall portion 9a. The lower surface of the connecting wall portion 9d is provided with a first connecting member engaging portion 9e located radially outward from the inner peripheral wall portion 9a and having a portion that protrudes radially inward from the inner peripheral surface, and a second connecting member engaging portion 9f that extends downward from the outer edge of the connecting wall portion 9d and then extends radially outward, and has a shape on its outer peripheral surface that has a recess into which the engaging holding portion 1e engages.

[0027] An elastic piece 9h is provided on the upper surface of the connecting wall 9d, which extends upward from the upper surface and then extends circumferentially. The elastic piece 9h is elastically deformable so that its tip is radially inward. A stopper portion 9j is provided on the tip of the elastic piece 9h, which protrudes radially outward. The stopper portion 9j engages with the gear portion 1d, which is composed of multiple projections spaced apart in the circumferential direction, by fitting between these projections. The gear portion 1d and the stopper portion 9j engage like a ratchet, and in this embodiment, when the stopper portion 9j attempts to rotate in one direction relative to the gear portion 1d, it acts to move radially inward relative to the gear portion 1d, causing the elastic piece 9h to elastically deform radially inward and disengage from the gear portion 1d and the stopper portion 9j, thus allowing rotation in this direction. On the other hand, when the stopper portion 9j rotates in the other direction relative to the gear portion 1d, the two remain engaged, thus preventing rotation in this direction. In this embodiment, the dispensing container 100 is configured such that when the stopper portion 9j rotates in one direction relative to the gear portion 1d, the push member 5 moves forward relative to the case cylinder 1.

[0028] The operating unit body 10 comprises a disc-shaped bottom wall portion 10a and a cylindrical outer peripheral wall portion 10b extending upward from the outer edge of the bottom wall portion 10a. The upper surface of the bottom wall portion 10a is provided with a main body engaging portion 10c that extends upward from the radially inward side of the connecting member first engaging portion 9e, has a portion that protrudes radially outward from the outer peripheral surface, and engages with the connecting member first engaging portion 9e.

[0029] The internal component 11 is cylindrical and includes an internal component body 11a whose lower end is inserted into and held by the outer peripheral wall portion 10b. The outer peripheral surface of the internal component body 11a is provided with a flange portion 11b that protrudes radially outward. Above the flange portion 11b on the outer peripheral surface of the internal component body 11a, there is a retaining portion 11c which has a shape that bulges radially outward on its outer peripheral surface and engages with and holds a lid (not shown).

[0030] The dispensing container 100, composed of such components, can be assembled as follows. Note that the following explanation is just one example, and the order can be changed as appropriate as long as assembly is possible.

[0031] First, when assembling Unit 2, the screw shaft member 3 and the hollow screw member 4 are combined. At this time, the screw shaft member 3 may be rotated relative to the hollow screw member 4, thereby screwing the first male thread portion 3a and the first female thread portion 4c together. However, since the hollow screw member 4 of this embodiment has a first slit 4e, the inner hollow portion 4a is elastically deformable so that its lower part expands radially outward. That is, when the screw shaft 3b is inserted into the inner hollow portion 4a, the lower part of the inner hollow portion 4a expands radially outward and inward, allowing the first male thread portion 3a and the first female thread portion 4c to be screwed together. Furthermore, the extrusion member 5 is combined with the hollow screw member 4. At this time, the hollow screw member 4 may be rotated relative to the extrusion member 5, thereby screwing the second male screw portion 4d and the second female screw portion 5d together. However, in this embodiment, the extrusion member 5 is elastically deformable so that the lower part of the outer hollow portion 5a expands radially outward due to the second slit 5e. Therefore, when the hollow screw member 4 is inserted into the outer hollow portion 5a, the lower part of the outer hollow portion 5a expands radially outward and inward, allowing the second male screw portion 4d and the second female screw portion 5d to be screwed together.

[0032] When the hollow screw member 4 and the extruded member 5 are combined, the extruded member 5 is positioned so that the first slit 4e and the second slit 5e are aligned in the circumferential direction, as shown in Figures 5A and 5B (in other words, the first slit 4e and the second slit 5e are offset by 90° in the circumferential direction with respect to the guide projection 5g). Note that the screw shaft member 3 is omitted in Figures 5A and 5B.

[0033] Then, in order to combine the movable cylinder member 6 with the extrusion member 5, the guide projection 5g is inserted from above into the first vertical groove 6b as shown in Figure 1. The annular body 7, which is integrally connected to the movable cylinder member 6, has a projection 7b as described above, and this projection 7b is provided at a position offset by 90° in the circumferential direction from the first vertical groove 6b (see Figure 4D). Furthermore, when combining the movable cylinder member 6 with the extrusion member 5, the hollow screw member 4 is positioned so that the first slit 4e and the second slit 5e are aligned in the circumferential direction with respect to the extrusion member 5 (see Figure 5B). That is, when the guide projection 5g shown in Figure 5B is inserted into the first vertical groove 6b shown in Figure 4D, the projection 7b is inserted into the first slit 4e, so that the unit 2 can be assembled as shown in Figure 6 without placing a large load on the weakened portion 6e.

[0034] Next, the annular body 7, which is integrally connected to the inner circumferential surface of the movable cylinder body 6a by the weakened portion 6e, is separated from the movable cylinder member 6 by breaking the weakened portion 6e. In this embodiment, a cylindrical jig J shown in Figure 6 is prepared, and the lower end of the screw shaft member 3 is inserted into the opening of the jig J, while the unit 2 is pressed against the jig J. As shown in the figure, the jig J is located below the annular body 7, and when the unit 2 is pressed against the jig J, the annular body 7 is pressed against the inside of the movable cylinder member 6, so a force acts on the weakened portion 6e from below, causing the weakened portion 6e to break, thereby separating the annular body 7 from the movable cylinder member 6. The annular body 7, which has separated and moved upward relative to the hollow screw member 4, is held by the hollow screw member 4 because the retaining engagement portion 7a engages with the retaining engagement portion 4f. In this state, the annular body 7 is located radially outward from the lower end of the inner hollow portion 4a. When the annular body 7 is in this position, it can be easily seen through the through-opening 6d shown in Figure 4C, making it easy to confirm that the annular body 7 is held by the hollow screw member 4. In this embodiment, when the retaining engagement portion 7a is engaged with the retaining engagement portion 4f, the contact projection 4g provided on the outer circumferential surface of the inner hollow portion 4a contacts the inner circumferential surface of the annular body 7. This prevents the annular body 7 from moving up and down relative to the hollow screw member 4.

[0035] In this embodiment, the screw shaft member 3, hollow screw member 4, extrusion member 5, movable cylinder member 6, and annular body 7 can be assembled in advance as unit 2. Therefore, even if there is a defect in the shape of these members that affects the rotational movement or forward and backward movement of each member, this can be known before assembling the dispensing container 100.

[0036] Subsequently, unit 2 is inserted into the case cylinder body 1a from the front end, and the connecting member 9 is inserted into the case cylinder body 1a from the rear end. Then, the lower shaft 3c of the screw shaft member 3 is inserted into the inner peripheral wall portion 9a of the connecting member 9. As a result, the unit-side anti-rotation portion 3d and the operating portion-side anti-rotation portion 9b engage, and the unit-side anti-dislodgement portion 3e and the operating portion-side anti-dislodgement portion 9c engage, thereby preventing the screw shaft member 3 from rotating and holding it in place relative to the connecting member 9. At this time, the second engaging portion 9f of the connecting member 9 engages with the engaging holding portion 1e of the case cylinder 1, so that the connecting member 9 can be rotatably held relative to the case cylinder 1. When the connecting member 9 is attached to the case cylinder 1, the toothed portion 9j of the elastic piece 9h of the connecting member 9 engages with the gear portion 1d of the case cylinder 1.

[0037] Subsequently, the lower end of the inner part body 11a of the inner part 11 is inserted into the inside of the operating part body 10 to fit and hold the two together. Then, the case cylinder 1 with the connecting member 9 attached is inserted into the inner part body 11a. This engages the first engaging part 9e of the connecting member and the engaging part 10c of the main body, preventing the connecting member 9 and the operating part body 10 from coming loose and holding them together. A rotation-preventing part (not shown) is provided between the connecting member 9 and the operating part body 10, preventing them from rotating relative to each other. Finally, by placing a lid (not shown) over the case cylinder body 1a, the lid can be held in place by the inner part 11.

[0038] To use the contents contained in the dispensing container 100, the lid (not shown) held by the inner part 11 is removed, and then the operating unit body 10 is rotated circumferentially to one side relative to the case cylinder 1. This causes the connecting member 9 to rotate in the same direction. The stopper portion 9j provided on the connecting member 9 is engaged with the gear portion 1d of the case cylinder 1, but when the connecting member 9 rotates in this direction, the engagement between the two is released and rotation is permitted. When the connecting member 9 rotates, the screw shaft member 3, which is held in place by the connecting member 9, also rotates in the same direction, and as a result the hollow screw member 4, the push-out member 5, and the movable cylinder member 6 move forward, allowing the contents to be dispensed from the opening at the front end of the case cylinder 1.

[0039] Incidentally, the inner hollow portion 4a is elastically deformable so that its lower part expands radially outward by the first slit 4e, and the screw shaft member 3 and the hollow screw member 4 can be combined by inserting the screw shaft 3b into the inner hollow portion 4a, thus offering excellent assembly. However, if a load is applied to, for example, the first male screw portion 3a and the first female screw portion 4c, the inner hollow portion 4a will elastically deform radially outward, and there is a risk that the screwed-together first male screw portion 3a and first female screw portion 4c will come apart. In this embodiment, the dispensing container 100 is equipped with an annular body 7 located radially outward from the lower end of the inner hollow portion 4a. That is, when the annular body 7 is attached to the hollow screw member 4 combined with the screw shaft member 3, the annular body 7 prevents the elastic deformation of the inner hollow portion 4a radially outward, thus preventing the first male screw portion 3a and the first female screw portion 4c from coming apart. Furthermore, as shown in Figure 7B, the projection 7b provided on the annular body 7 is inserted into the first slit 4e, preventing elastic deformation of the inner hollow portion 4a radially inward. As a result, the first male thread portion 3a and the first female thread portion 4c do not press strongly against each other, and no great force is required during operation. Also, in this embodiment, as shown in Figure 1, when the retaining engagement portion 7a is engaged with the retaining engagement portion 4f, the contact projection 4g provided on the outer circumferential surface of the inner hollow portion 4a contacts the inner circumferential surface of the annular body 7, preventing the annular body 7 from moving up and down relative to the hollow screw member 4. Therefore, problems such as the annular body 7 moving up and down during use and generating abnormal noise can be prevented. Although a force acts radially inward on the inner hollow portion 4a when the contact projection 4g contacts the inner circumferential surface of the annular body 7, the projection 7b is inserted into the first slit 4e, so the first male thread portion 3a and the first female thread portion 4c do not press strongly against each other.

[0040] Although one embodiment of the present invention has been described above with reference to the drawings, this embodiment may be modified as follows.

[0041] For example, in the embodiment described above, the contact projection 4g was provided on the outer circumferential surface of the inner hollow portion 4a and in contact with the inner circumferential surface of the annular body 7, but it may also be provided on the inner circumferential surface of the annular body 7 and in contact with the outer circumferential surface of the inner hollow portion 4a.

[0042] (Note) This specification discloses the following technologies in one aspect. The reference numerals listed below correspond to those used in the accompanying drawings, but are provided as examples only and are not intended to limit the inventions of this application.

[0043] (Technology 1) Case tube (1), An operating part (8) is held in a position so as to be rotatable around the central axis (O) of the case cylinder (1), A screw shaft member (3) that is rotatable together with the operating part (8) and has a first male threaded portion (3a) on its outer circumferential surface, A hollow screw member (4) having an inner hollow portion (4a) having a first female screw portion (4c) on its inner circumferential surface that screws into the first male screw portion (3a) and a second male screw portion (4d) on its outer circumferential surface, and a slit (4e) that is cut out of the inner hollow portion (4a) along the central axis (O) to allow elastic deformation of the inner hollow portion (4a) in the radial direction and to allow the fitting of the first female screw portion (4c) and the first male screw portion (3a), An extruded member (5) having an outer hollow portion (5a) having a second female thread portion (5d) that screws into the second male thread portion (4d) on its inner circumferential surface, and a sealing portion (5c) that slidably contacts the inner circumferential surface of the case cylinder (1), The system includes a movable cylindrical member (6) located between the outer hollow portion (5a) and the case cylinder (1), which moves the extrusion member (5) in a direction along the central axis (O) while restricting its rotation around the central axis (O) relative to the case cylinder (1), In a dispensing container (100) in which the extrusion member (5) advances relative to the case cylinder (1) when the operating part (8) is rotated to one side in the circumferential direction relative to the case cylinder (1), Furthermore, it includes an annular body (7) attached to the radially outer side of the inner hollow portion (4a) to prevent elastic deformation of the inner hollow portion (4a) radially outward when the first female thread portion (4c) and the first male thread portion (3a) are screwed together, The annular body (7) is a dispensing container (100) having a projection (7b) that is inserted into the slit (4e) and prevents the inner hollow portion (4a) from undergoing elastic deformation radially inward.

[0044] This technology allows the hollow screw member to be elastically deformed radially outward by the slit, making it easy to fit the first male thread portion of the screw shaft member with the first female thread portion of the hollow screw member, thus contributing to improved assembly. Furthermore, by attaching an annular body to the hollow screw member combined with the screw shaft member, the elastic deformation of the hollow screw member radially outward is prevented by the annular body, thus preventing the first female thread portion and the first male thread portion from coming apart. Moreover, the projection of the annular body is inserted into the slit, preventing the elastic deformation of the hollow screw member radially inward, so that the first female thread portion and the first male thread portion do not press strongly against each other. Therefore, the annular body and projection prevent malfunctions during operation involving the male and female thread portions.

[0045] (Technology 2) The dispensing container (100) according to Technical 1, wherein the outer circumferential surface of the inner hollow portion (4a) and the inner circumferential surface of the annular body (7) have a contact projection (4g) that contacts the other of the outer circumferential surface of the inner hollow portion (4a) and the inner circumferential surface of the annular body (7).

[0046] This technology prevents the annular body 7 from moving up and down relative to the hollow screw member 4, thereby preventing problems such as the annular body 7 moving during use and generating abnormal noise.

[0047] (Technology 3) The annular body (7) is integrally connected to the inner circumferential surface of the movable cylindrical member (6) via a weakened portion (6e), and when the annular body (7) is pressed inward against the movable cylindrical member (6), the weakened portion (6e) breaks and is attached to the radially outer side of the inner hollow portion (4a), as described in Technical 1, in the dispensing container (100).

[0048] This technology allows the movable cylindrical member and the annular body to be formed as a single component, thus reducing the number of parts and suppressing cost increases.

[0049] Although one embodiment of the present invention has been described above, the present invention is not limited to such specific embodiments, and unless otherwise specifically limited in the above description, various modifications and changes are possible within the scope of the spirit of the present invention as described in the claims. For example, the configuration of the above-described embodiment can be added or deleted as appropriate, and the configuration of one embodiment can be provided in other embodiments. Furthermore, the effects in the above-described embodiment are merely illustrative of the effects that may result from the present invention. In other words, the effects of the present invention are not limited to the above-described effects, and additional effects may also be produced in addition to the above-described effects. [Explanation of symbols]

[0050] 1: Case tube 1a: Case cylinder body 1b: Engagement convex part 1c: Stopper protrusion 1d: Gear section 1e: Engagement holding part 2: Unit 3: Screw shaft member 3a: First male threaded portion 3b: Screw shaft 3c: Lower axis 3d: Unit side anti-rotation part 3e: Unit-side retaining part 4: Hollow screw member 4a: Inner hollow part 4b: Ceiling wall part 4c: First female thread section 4d: Second male thread section 4e: First slit (slit) 4f: Retaining engagement part 4g: Contact protrusion 5: Extruded member 5a: Outer hollow part 5b:Top wall part 5c: Seal part 5d: Second female thread section 5e: Second slit 5g: Guide protrusion 6: Movable cylindrical member 6a: Movable tube body 6b: First longitudinal groove 6c: Second longitudinal groove 6d: Through opening 6e: Weakened part 7: Ring-shaped body 7a: Retaining engagement portion 7b:Protrusion 8:Operation section 9: Connecting member 9a: Inner peripheral wall part 9b: Anti-rotation part on the operating section side 9c: Retaining part on the operating section side 9d: Connecting wall section 9e: First engaging portion of connecting member 9f: Second engaging part of connecting member 9h: Elastic piece 9j: Wheel stop 10: Main unit of the control panel 10a: Bottom wall part 10b: Outer wall 10c: Main body engagement part 11: Filling 11a: Inner tool body 11b: Flange section 11c: Holding part 100: Dispenser J: Jig O: Central axis

Claims

1. The case tube and An operating part is held in relation to the case cylinder so as to be rotatable around the central axis of the case cylinder, A screw shaft member that is rotatable together with the operating part and has a first male threaded portion on its outer surface, A hollow screw member having an inner hollow portion having a first female screw portion on its inner circumferential surface that screws into the first male screw portion and a second male screw portion on its outer circumferential surface, and a slit that cuts out the inner hollow portion along the central axis, allowing for radial elastic deformation of the inner hollow portion and facilitating the fitting of the first female screw portion and the first male screw portion, An extruded member having an outer hollow portion having a second female thread portion that screws into the second male thread portion on its inner circumferential surface, and a sealing portion that slidably contacts the inner circumferential surface of the case cylinder, The system includes a movable cylindrical member located between the outer hollow portion and the case cylinder, which moves the extrusion member in a direction along the central axis while restricting its rotation around the central axis relative to the case cylinder, In a dispensing container in which the extrusion member advances relative to the case cylinder when the operating part is rotated to one side in the circumferential direction relative to the case cylinder, Furthermore, it includes an annular body attached to the radially outer side of the inner hollow portion, which prevents elastic deformation of the inner hollow portion radially outward when the first female thread portion and the first male thread portion are screwed together, The annular body has a projection that is inserted into the slit and prevents the inner hollow portion from undergoing elastic deformation radially inward, and is used as a dispensing container.

2. The dispensing container according to claim 1, wherein either the outer circumferential surface of the inner hollow portion or the inner circumferential surface of the annular body has a contact projection that contacts the other of the outer circumferential surface of the inner hollow portion or the inner circumferential surface of the annular body.

3. The dispensing container according to claim 1, wherein the annular body is integrally connected to the inner circumferential surface of the movable cylindrical member via a weakened portion, and when the annular body is pressed inward against the movable cylindrical member, the weakened portion breaks and is attached to the radially outer side of the inner hollow portion.

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