Pump-equipped container

Abstract

To provide a pump-equipped container using a container body having a substantially horizontal shoulder portion, the shoulder portion being unlikely to deform when the pump is used.SOLUTION: A pump-equipped container includes a container body 2 having a storage space capable of storing a liquid, and a pump attached to an opening 21 of the container body 2 and capable of spraying the liquid to the outside. The container body 2 has a substantially horizontal shoulder portion 23. The shoulder portion 23 has a pair of steps 26. One of the pair of steps 26 is located in one region on one side of the shoulder 23. The other of the pair of steps 26 is located in the other region on the other side of the shoulder 23.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a container with a pump. [Background technology]

[0002] 2. Description of the Related Art A conventional pump-equipped container is known in which the shoulder of the container body to which the pump is attached is substantially horizontal (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-105694 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the closer the inclination of the shoulder of the container body is to the horizontal, the more likely the shoulder is to deform when the pump is used.

[0005] An object of the present invention is to provide a pump-equipped container that uses a container body having a substantially horizontal shoulder portion, and in which the shoulder portion is less likely to deform when the pump is used. [Means for solving the problem]

[0006] (1) The pump-equipped container of the present invention comprises a container body having a storage space capable of storing a liquid, and a pump attached to the mouth of the container body and capable of spraying the liquid to the outside world, wherein the container body has a substantially horizontal shoulder portion, and the shoulder portion has a pair of steps, one of the pair of steps being located in one region on one side of the shoulder portion, and the other of the pair of steps being located in the other region on the other side of the shoulder portion.

[0007] (2) In the pump-equipped container described above in (1), it is preferable that the pair of steps are arranged at opposing positions across the mouth.

[0008] (3) In the pump-equipped container of (1) or (2) above, it is preferable that the step has a step bottom surface with a gradient greater than that of the shoulder surface of the shoulder portion.

[0009] (4) In the pump-equipped container described above in (3), the bottom surface of the step may be a slope surface that is inclined circumferentially around the axis of the container body.

[0010] (5) In the pump-equipped container of any one of (1) to (4) above, it is preferable that the step is formed over the entire shoulder portion in the axis direction between the neck portion and the body portion of the container body.

[0011] (6) In the pump-equipped container of any one of (1) to (5) above, the pair of steps may be disposed at diagonal positions when viewed in the axial direction of the container body. Effect of the Invention

[0012] According to the present invention, it is possible to provide a pump-equipped container that uses a container body having a substantially horizontal shoulder portion, and in which the shoulder portion is unlikely to deform when the pump is used. [Brief description of the drawings]

[0013] [Figure 1] 1 is a front view, partially in cross section, showing a pump-equipped container according to one embodiment of the present invention; [Diagram 2] 2 is a side view showing the pump container of FIG. 1, partially in section, in a schematic manner. [Diagram 3] 2 is a front view showing a schematic view of a container body used in the pump-equipped container of FIG. 1. FIG. [Figure 4] FIG. 4 is a side view showing the container body of FIG. 3 in a simplified manner. [Diagram 5]4 is a top view showing the container body of FIG. 3, viewed from the mouth side of the container body. FIG. [Figure 6] 6 is an enlarged cross-sectional view showing a schematic view of the container body of FIG. 3 taken along the line AA of FIG. 5. [Figure 7] 6 is an enlarged cross-sectional view showing a schematic view of the container body of FIG. 3 taken along the line BB of FIG. 5. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, a pump-equipped container 1, which is one embodiment of the present invention, will be described with reference to the drawings. However, in the following description, in order to simplify the description, the meanings of terms are defined as follows.

[0015] The "axial direction" refers to the direction in which the axis O (hereinafter simply referred to as "axis O") of the pump container 1 extends. Additionally, "upper" or "upper side" refers to the side in the axial direction where the mouth of the container body is located, and "lower" or "lower side" refers to the side in the axial direction where the bottom of the container body is located.

[0016] Next, the "direction perpendicular to the axis" refers to a direction perpendicular to the axial direction. The "inner side in the direction perpendicular to the axis" refers to the side closer to the axis O, and the "outer side in the direction perpendicular to the axis" refers to the side farther from the axis O.

[0017] Referring to FIG. 1, a pump container 1 includes a container body 2 having a storage space S2 capable of storing a liquid, and a pump 3 attached to the container body 2 and capable of spraying the liquid to the outside.

[0018] In this embodiment, the pump 3 comprises an attachment cap 31 that is attached to the mouth 21 of the container body 2, a pump body 32 that is placed in the storage space S2 of the container body 2, and a pressing head 33 that operates the pump mechanism built into the pump body 32.

[0019] The pump body 32 generates a pump action by repeatedly pressing and releasing the pressing head 33. In this embodiment, the pump body 32 includes a pump cylinder 32a accommodated in the accommodation space S2 of the container body 2, a pump cover 32b that closes the upper end opening of the pump cylinder 32a, and a stem 32c that is connected to the pressing head 33. In this embodiment, the pump body 32 further includes a piston (not shown) that is axially slidably arranged between the pump cylinder 32a and the pump cover 32b, and a spring (not shown) that elastically supports the piston. In this example, the pump mechanism is composed of the pump cylinder 32a, the pump cover 32b, the stem 32c, the piston, and the spring.

[0020] In this embodiment, the piston is connected to the lower end of the stem 32c (not shown). Meanwhile, the upper end of the stem 32c slidably passes through the pump cover 32b and is connected to the pressing head 33. This allows the piston to move axially together with the pressing head 33 via the stem 32c inside the pump cylinder 32a.

[0021] In this embodiment, the mounting cap 31 includes a mounting tube 31a that is screwed into the male thread 21s provided on the mouth portion 21 of the container body 2. In this embodiment, the mounting cap 31 includes an outer tube 31b that is connected to the mounting tube 31a. In this embodiment, the mounting cap 31 includes an inner tube 31c that is connected to the mounting tube 31a. In this embodiment, the pump cylinder 32a includes a flange 32f. In this embodiment, the pump 3 is sandwiched between the inner tube 31c of the mounting cap 31 and the upper end of the mouth portion 21 of the container body 2, and the flange 32f of the pump cylinder 32a is thereby attached to the mouth portion 21 of the container body 2. In this embodiment, an O-ring 34 is interposed between the flange 32f of the pump cylinder 32a and the mouth portion 21 of the container body 2.

[0022] In this embodiment, when the pressing head 33 is pressed, the piston is pressed downward into the pump cylinder 32a against the elastic force of the spring. Also, in this embodiment, when the pressing of the pressing head 33 is released, the piston moves upward by the elastic force of the spring and automatically returns to the initial position of the pump cylinder 32a. In this way, in this embodiment, the pump 3 can discharge the liquid contained in the storage space S2 of the container body 2 to the outside through the discharge port A3 formed in the pressing head 33 by repeatedly pressing and releasing the pressing of the pressing head 33.

[0023] In this embodiment, the pump 3 includes a pipe 32d for sucking the liquid in the accommodation space S2 of the container body 2. The pipe 32d is connected to the lower end of the pump cylinder 32a.

[0024] In this embodiment, the container body 2 is a bottle container extending in the axial direction. In this embodiment, the container body 2 includes, along the axial direction, a mouth portion 21, a neck portion 22 connected to the mouth portion 21, a shoulder portion 23 connected to the neck portion 22, a body portion 24 connected to the shoulder portion 23, and a bottom portion 25 connected to the body portion 24. In this embodiment, the lower end of the body portion 24 is closed by the bottom portion 15. Inside the container body 2, a storage space S2 is formed for storing liquid as the contents. The storage space S2 is in communication with the outside world through an opening portion A2 formed at the upper end of the mouth portion 21.

[0025] In this embodiment, the axis of the container body 2, together with the axis of the pump 3, is arranged coaxially with the axis O of the pump-equipped container 1.

[0026] Fig. 3 shows the container body 2 from the front (rear) side, and Fig. 4 shows the container body 2 from the left (right) side.

[0027] In this embodiment, the mouth portion 21 is formed with a male thread 21s for mounting the mounting cap 31 of the pump 3. Also, in this embodiment, the neck portion 22 is provided with a neck ring 22a. In this embodiment, the neck ring 22a is formed intermittently around the mouth portion 21.

[0028] The container body 2 has a substantially horizontal shoulder portion 23. The shoulder portion 23 has a pair of steps 26. One of the pair of steps 26 is disposed in one region on one side of the shoulder portion 23. The other of the pair of steps 26 is disposed in the other region on one side of the shoulder portion 23. In this embodiment, the steps 26 are, for example, recesses (grooves) formed in the shoulder portion 23 as shown in FIG. 3.

[0029] Here, Fig. 6 shows the container body 2 in a schematic enlarged view taken along the line AA in Fig. 5, which will be described later, and Fig. 7 shows the container body 2 in a schematic enlarged view taken along the line BB in Fig. 5.

[0030] 6 and 7, in this embodiment, the step 26 has a stepped bottom surface F2 with a larger gradient than the shoulder surface F1 of the shoulder portion 23. For example, referring to FIG. 6, in this embodiment, the shoulder portion 23 has a substantially horizontal shoulder surface F1. The shoulder surface F1 is connected to the outer edge (boundary line between the neck portion 22 and the shoulder portion 23) e3 of the neck portion 22 of the container body 2. The gradient of the shoulder surface F1 is an acute angle α with respect to the horizontal line LH toward the outer side in the axial direction toward the body portion 24. Also, referring to FIG. 7, in this embodiment, the step bottom surface F2 of the step 26 is connected to the neck portion 22 of the container body 2. Furthermore, in this embodiment, the gradient of the step bottom surface F2 of the step 26 is an acute angle β with respect to the horizontal line LH toward the outer side in the axial direction toward the body portion 24. In this embodiment, the angle β is larger than the angle α. Therefore, the step 26 has a step bottom surface F2 that is steeper in slope than the shoulder surface F1 of the shoulder portion 23.

[0031] 5, the container body 2 is shown diagrammatically from the mouth 21 side of the container body. In this embodiment, the container body 2 is a polygonal bottle container as viewed in the axial direction, which includes a body 24 formed by a plurality of side walls arranged around an axis O.

[0032] In this embodiment, the container body 2 is a bottle container having a rectangular shape when viewed in the axial direction, as shown in Fig. 5. In this embodiment, the body 24 of the container body 2 is formed by a wide side wall 24a on the long side and a short side wall 24b that is narrower than the side wall 24a. In this embodiment, the body 24 includes a column wall 24c that connects the side wall 24a and the side wall 24b. In this embodiment, the column wall 24c is curved outward in the axial direction when viewed in the axial direction, as shown in Fig. 5.

[0033] In this embodiment, the shoulder portion 23 has a rectangular outer shape when viewed in the axial direction, as shown in Fig. 5. In this embodiment, the shoulder portion 23 is formed by a wide long side (longer side wall) 23a and a short side (short side wall) 23b that is shorter than the long side 23a. In this embodiment, the shoulder portion 23 has a corner side (pillar wall) 23c that connects the long side 23a and the short side 23b. In this embodiment, the corner side 23c is curved outward in the direction perpendicular to the axis when viewed in the axial direction, as shown in Fig. 5.

[0034] 5, a pair of steps 26 are formed on a shoulder surface F1 of the shoulder portion 23. One of the pair of steps 26 is disposed in one region on one side of the shoulder portion 23. The other of the pair of steps 26 is disposed in the other region on the other side of the shoulder portion 23.

[0035] Here, the one-side region of shoulder portion 23 refers to one of the two regions of shoulder portion 23 divided by a straight line L passing through axis O when viewed in the axial direction, as shown in Fig. 5. Moreover, the other-side region of shoulder portion 23 refers to the other of the two regions of shoulder portion 23 divided by a straight line L passing through axis O when viewed in the axial direction, as shown in Fig. 5.

[0036] In the container body 2, the pair of steps 26 are disposed at positions facing each other across the mouth 21. One of the pair of steps 26 can be disposed at any position in one region on one side of the shoulder portion 23, provided that it is in that region. The other of the pair of steps 26 can also be disposed at any position in the other region on one side of the shoulder portion 23, provided that it is in the other region on that side.

[0037] 5, in this embodiment, the pair of steps 26 are disposed at positions diagonally opposite to each other when viewed in the axial direction of the container body 2. Specifically, the steps 26 are disposed at the positions of a pair of corner sides 23c that sandwich the mouth portion 21 therebetween.

[0038] As shown in FIG. 5, in this embodiment, the step 26 is formed over the entire shoulder portion 23 between the neck portion 22 and the body portion 24 of the container body 2 in the direction perpendicular to the axis.

[0039] In this embodiment, the step bottom surface F2 of the step 26 is a slope surface that is inclined in the circumferential direction around the axis O of the container body 2.

[0040] 5, the reference symbol e1 indicates one circumferential end of the step 26. In this embodiment, the step bottom surface F2 of the step 26 is smoothly connected to the shoulder surface F1 at the one circumferential end e1 of the step 26 without any step. On the other hand, the reference symbol e2 indicates the other circumferential end of the step 26. In this embodiment, the step bottom surface F2 of the step 26 forms a step between the shoulder surface F1 at the other circumferential end e2 of the step 26. In other words, in this embodiment, a step wall surface F3 is formed between the other circumferential end e2 of the step 26 and the step bottom surface F2 of the step 26, connecting the shoulder surface F1 and the step bottom surface F2 of the step 26. That is, in this embodiment, the step 26 includes the step bottom surface F2 and the step wall surface F3, and extends along the outer edge e3 of the neck portion 22. That is, the step bottom surface F2 of the step 26 forms a slope surface that slopes downward from one circumferential end e1 toward the other circumferential end e2. In this embodiment, the step bottom surface F2 of the step 26 forms a slope surface that slopes downward in the clockwise direction when viewed from the mouth portion 21 in the axial direction, as shown in FIG.

[0041] As shown in FIG. 5, in this embodiment, the step wall surface F3 extends parallel to the axial direction. That is, in this embodiment, the step wall surface F3 extends in the up-down direction (direction perpendicular to the horizontal direction) between the shoulder surface F1 of the shoulder portion 23 and the step bottom surface F2 of the step 26. Furthermore, as shown in FIG. 5, in this embodiment, the step wall surface F3 extends in the axial direction. That is, in this embodiment, the step wall surface F3 extends radially from the axis O. In this case, the buckling strength of the shoulder portion 23 can be further improved. However, the step wall surface F3 may extend so as to be inclined with respect to the axial direction, that is, the step wall surface F3 may extend so as to be inclined with respect to the up-down direction (direction perpendicular to the horizontal direction) between the shoulder surface F1 of the shoulder portion 23 and the step bottom surface F2 of the step 26. Furthermore, the step wall surface F3 may extend so as to be inclined with respect to the axial direction. That is, the step wall surface F3 can also extend in a tangential direction centered on the axis O. That is, the step wall surface F3 can be provided with some inclination with respect to various directions in a cross section perpendicular to the axis, the cross section being normal to the axis O.

[0042] 5, the step bottom surfaces F2 of the two steps 26 are inclined downward in a clockwise direction in the axial direction when viewed from the mouth 21. That is, in this embodiment, the step bottom surfaces F2 of the two steps 26 are inclined in the same direction around the axis O.

[0043] When the shoulder surface F1 of the shoulder portion 23 of the container body 2 is made substantially horizontal, for example, as in this embodiment, the shoulder cover 5 can be attached to the shoulder surface F1 of the shoulder portion 23. In this case, a wide attachment margin can be secured when attaching the shoulder cover 5 to the shoulder surface F1 of the shoulder portion 23.

[0044] However, when the shoulder 23 of the container body 2 is made substantially horizontal, the strength against buckling of the shoulder 23 is reduced. Therefore, the closer the inclination of the shoulder 23 of the container body 2 is to the horizontal, the more easily the shoulder 23 is deformed when pressed downward by the pressing head 33 during use of the pump. Furthermore, when the shoulder cover 5 is set on the shoulder 23 of the container body 2 as in this embodiment, a certain buckling strength may be required for the shoulder 23 of the container body 2.

[0045] Therefore, the pump-equipped container 1 of this embodiment is provided with a pair of steps 26 on the substantially horizontal shoulder portion 23 of the container body 2. According to the pump-equipped container 1, the steps 26 are provided on both sides of the shoulder portion 23, thereby increasing the buckling strength of the shoulder portion 23. Therefore, according to the pump-equipped container 1, it is possible to ensure the buckling strength required when using the pump, while the container body 2 remains provided with the substantially horizontal shoulder portion 23.

[0046] Therefore, according to the pump container 1, a pump container can be obtained using the container body 2 having a substantially horizontal shoulder portion 23, in which the shoulder portion 23 is unlikely to deform when the pump is in use.

[0047] In this embodiment, the pair of steps 26 are disposed at positions facing each other across the mouth 21 of the container body 2. In this case, the buckling strength of the shoulder portion 23 can be increased in a well-balanced manner. Therefore, in this case, the shoulder portion 23 can be made less susceptible to deformation when the pump is in use.

[0048] Furthermore, in this embodiment, the step 26 has a step bottom surface F2 with a greater gradient than the shoulder surface F1 of the shoulder portion 23. When the step bottom surface F2 of the step 26 has a greater gradient than the shoulder surface F1 of the shoulder portion 23, the buckling strength can be further increased. Therefore, in this case, it is possible to make the shoulder portion 23 less likely to deform when the pump is in use.

[0049] In this embodiment, the step bottom surface F2 of the step 26 is a slope surface that is inclined in the circumferential direction around the axis O. In this case, it is possible to make the shoulder portion 23 more difficult to deform when the pump is in use.

[0050] In this embodiment, the step 26 is formed over the entire shoulder portion 23 in the axial direction between the neck portion 22 and the trunk portion 24 of the container body 2. In this case, the shoulder portion 23 can be made less susceptible to deformation when the pump is in use.

[0051] In this embodiment, the pair of steps 26 are disposed at diagonal positions when viewed in the axial direction of the container body 2. In this case, the steps 26 can be disposed at the corner side 23c, which has high buckling strength, in the region of the shoulder portion 23. Therefore, in this case, it is possible to make the shoulder portion 23 less likely to deform when the pump is in use.

[0052] The following are test results on the buckling strength of the container body 2. In both Example 1 according to the present invention and a Comparative Example for comparison with Example 1, the container body 2 was a blow molded container using polypropylene (PP). Each of the container bodies 2 had a capacity of 200 ml and a mass of 30 g.

[0053] Example 1 (1) Gradient of shoulder 23 Long side (longitudinal side): α=4.4°, Short side (short side): α=20°, Diagonal (corner side): α=3.6° (2) Gradient of step 26: β=15.1° (3) Buckling strength 336N~410N

[0054] Comparative Example 1 (1) Gradient of shoulder 23 Long side (longitudinal side): α=8.7°, Short side (short side): α=8.7°, Diagonal (corner side): α=4.1° (2) Step 26: None (3) Buckling strength 184N~219N

[0055] From the above analysis results, it is understood that according to Example 1 in which a pair of steps are provided in the shoulder portion, the buckling strength is improved compared to the comparative example in which no steps are provided.

[0056] The above is an exemplary embodiment of the present invention. Therefore, the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the claims. For example, the shoulder portion 23 can have at least one pair of steps 26. That is, two or more pairs of steps 26 can be provided. Also, for example, referring to Figs. 3 to 5, in this embodiment, the axial width of the part where the shoulder cover 5 is attached to the shoulder portion 23 is narrower than the axial width of the body portion 24, but can be the same width as the body portion 24. Also, the shoulder cover 5 can be omitted, and the pump 3 has a pressing head 33, and various pumps can be adopted as long as the pump 3 is configured to press the shoulder portion 23 toward the bottom portion 25 through the mouth portion 21 of the container body 2. Also, the container body 2 can be a round bottle container instead of a polygonal bottle container. [Explanation of symbols]

[0057] 1: container with pump, 2: container body, 21: mouth of container body, 21s: male thread, 22: neck of container body, 22a: neck ring, 23: shoulder of container body, F1: shoulder surface of shoulder, 23a: long side forming part of the outer shape of the shoulder, 23b: short side forming part of the outer shape of the shoulder, 23c: corner side forming part of the outer shape of the shoulder, 24: body of container body, 25: bottom of container body, 26: step, e1: one circumferential end of the step, e2: the other circumferential end of the step, e3: outer edge of the neck of the container body (boundary line between the neck and shoulder), F2: step bottom surface of the step, F3: step wall surface of the step, 3: pump, 31: mounting cap, 32: pump body, 32a: pump cylinder, 32b: pump cover, 32c: stem, 33: pressing head, 5: shoulder cover

Claims

1. A container body having a storage space capable of storing liquid; a pump attached to a mouth of the container body and capable of spraying the liquid to the outside; A pump-equipped container comprising: The container body has a generally horizontal shoulder portion, The shoulder portion includes a pair of steps, one of the pair of steps is disposed in one region on one side of the shoulder portion, A pump-equipped container, wherein the other of the pair of steps is arranged in the other side region of the shoulder portion.

2. The pump-equipped container according to claim 1 , wherein the pair of steps are disposed at positions opposite each other with the mouth portion therebetween.

3. 3. The pump-equipped container according to claim 1, wherein the step has a step bottom surface with a gradient greater than that of a shoulder surface of the shoulder portion.

4. 4. The pump-equipped container according to claim 3, wherein the step bottom surface of the step is a slope surface that is inclined in a circumferential direction around an axis of the container body.

5. 2. The pump-equipped container according to claim 1, wherein the step is formed over the entire shoulder portion between the neck portion and the barrel portion of the container body in a direction perpendicular to the axis of the shoulder portion.

6. The pump-equipped container according to claim 2 , wherein the pair of steps are disposed at diagonal positions when viewed in the axial direction of the container body.

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