Lid opening / closing device

Abstract

To provide a lid opening / closing device capable of easily opening / closing a lid of a can.SOLUTION: A lid opening / closing device 1 for opening / closing a lid 120 of a 18-liter can 100 comprises a main body part 11, and a pressing part 41. The main body part 11 has a first face 21, a recess part 23, an abutting part 24, and an opening part 30. The first face 21 opposes the 18-liter can 100 during opening / closing of the lid 120. The recess part 23 is formed on the first face 21, to which the lid 120 is fitted. The abutting part 24 is provided inside the recess part 23, and is capable of abutting on an edge part 124 of a top face 121 of the lid 120. The opening part 30 opposes an inside part 125 which is further inside than the edge part 124 of the lid 120 while the edge part 124 of the lid 120 is abutted on the abutting part 24. A depth d1 from the first face 21 to the abutting part 24 is shallower than a thickness d2 of the lid. The pressing part 41 is movably provided in the main body part 11, and is capable of pressing a central part 123 of the lid 120 fitted in the recess part 23, via the opening part 30.SELECTED DRAWING: Figure 6A

Description

Technical Field

[0001] The present invention relates to a lid opening / closing device.

Background Art

[0002] In the construction industry, chemical industry, food industry, etc., 18-liter cans are used as containers for storing and transporting the content liquid and for using the internal liquid.

[0003] When using a large amount of the content liquid at once, the upper surface of the 18-liter can is cut open using a can-opening tool, and the content liquid is transferred to another container (see, for example, Patent Document 1).

[0004] However, when the upper surface is cut open in this way, it is necessary to use up the content liquid in the can at once. Therefore, when using the content liquid in the can in multiple portions, the lid of the can is opened and closed by hand. The lid can be opened by pushing the center of the lid with a finger to warp the lid. Also, after manually returning the warp of the lid, the lid is closed by pushing the lid into the edge of the opening of the can body.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, a considerable amount of force was required when pushing the lid with a finger to open the lid and when returning the warp to close the lid.

[0007] An object of the present disclosure is to provide a lid opening / closing device capable of easily opening and closing the lid of a can.

Means for Solving the Problems

[0008] The lid opening and closing device according to the first disclosure is a lid opening and closing device for opening and closing the lid of a can, and includes a main body portion and a pressing portion. The main body portion has a first surface, a concave portion, a contact portion, and an opening portion. The first surface faces the can when the lid is opened and closed. The concave portion is formed on the first surface and the lid fits therein. The contact portion is disposed inside the concave portion and can contact the edge portion of the upper surface of the lid. The opening portion faces the portion of the upper surface of the lid that is inside the edge portion when the edge portion of the lid contacts the contact portion. The depth from the first surface to the contact portion is shallower than the thickness of the lid. The pressing portion is movably disposed on the main body portion and can press the central portion of the lid fitted into the concave portion through the opening portion.

Advantages of the Invention

[0009] According to the present disclosure, it is possible to provide a lid opening and closing device that can easily open and close the lid of a can.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6A

Figure 6B

Figure 7A

Figure 7B

Figure 8

Figure 9A

Figure 9B

Figure 9C

Figure 9D

Figure 9E

Mode for Carrying Out the Invention

[0011] The lid opening / closing device according to the embodiment of the present disclosure will be described.

[0012] FIG. 1 is a perspective view showing the appearance of the lid opening / closing device 1 of the present embodiment and a part of the 18 - liter can 100. The lid opening / closing device 1 of the present embodiment is used for opening and closing the lid 120 of the 18 - liter can 100 (a one - bucket can). As shown by the arrow in FIG. 1, the lid opening / closing device 1 of the present embodiment is arranged and used so as to cover the lid 120 from above.

[0013] (Structure of Lid 120) First, the structure of the lid 120 will be described. FIG. 2(a) is a side view of the lid 120. FIG. 2(b) is a plan view of the lid 120. FIG. 3(a) is a figure for explaining the operation of opening the lid 120, and FIG. 3(b) is a figure for explaining the operation of closing the lid 120.

[0014] As shown in FIGS. 1, 3(a), and 3(b), the 18-liter can 100 has a can body 110 and a lid 120 disposed on the upper surface 110s of the can body 110. The can body 110 has a pouring spout 111. The pouring spout 111 has a portion bulging outward. The lid 120 fits into the pouring spout 111 so as to close the pouring spout 111.

[0015] As shown in FIGS. 2(a) and 2(b), the lid 120 has an upper surface 121 and a side surface 122. The upper surface 121 is circular in plan view. The side surface 122 extends from the periphery of the upper surface 121 in a direction perpendicular to the upper surface 121. The upper surface 121 has a central portion 123 and an edge portion 124. The central portion 123 is the raised portion of the upper surface 121. The edge portion 124 is the portion near the edge of the upper surface 121. The edge portion 124 is, for example, the portion outside the dotted line 121a shown in FIG. 2(b). Also, the portion inside the edge portion 124 of the upper surface 121 (the portion inside the dotted line 121a) is shown as an inner portion 125. The central portion 123 is included in the inner portion 125.

[0016] As shown by the arrow A in FIG. 3(a), when the central portion 123 of the lid 120 is pushed toward the can body 110, the lid 120 warps so that the end 122e on the can body 110 side of the side surface 122 opens (see arrow B). Thereby, the lid 120 can be removed from the pouring spout 111 of the can body 110.

[0017] Also, as shown in FIG. 3(b), when the warped lid 120 is placed over the pouring spout 111 and the edge portion 124 is pushed toward the can body 110 as shown by the arrow C, the warp of the lid 120 is restored so that the end 122e closes (see arrow D). Thereby, the lid 120 fits into the pouring spout 111 and the lid 120 can be closed. The edge portion 124 can be said to be the portion that can restore the warp of the lid 120 by pushing. In FIG. 3(b), for clarity, the warp of the lid is exaggeratedly shown.

[0018] In the lid opening / closing device 1 of the present embodiment, the lid 120 can be opened by pressing the central portion 123 and can be closed by pressing the edge portion 124, and the lid is opened and closed using this structure.

[0019] (Configuration of the lid opening / closing device 1) FIG. 4(a) is a top view showing the configuration of the lid opening / closing device 1 of the present embodiment. FIG. 4(b) is a bottom view showing the configuration of the lid opening / closing device 1 of the present embodiment.

[0020] As shown in FIGS. 1, 4(a) and 4(b), the lid opening / closing device 1 includes a main body portion 11 and an operation portion 12. The operation portion 12 is disposed movably with respect to the main body portion 11. FIG. 5 is a view showing the internal configuration by transmitting the front half of the main body portion 11 shown in FIG. 1. As shown in FIG. 5, the lid opening / closing device 1 further includes a first biasing member 13, a holding portion 14, a support body 15, a second biasing member 16, a needle member 17, a third biasing member 18, and a fourth biasing member 19 (see FIG. 7A described later). In FIG. 5, the fourth biasing member 19 is omitted for easy viewing of the drawing.

[0021] (Main body portion 11) The main body portion 11 is a columnar member. The outer shape of the main body portion 11 is a teardrop shape in a plan view of FIG. 4(a). The outer shape of the main body portion 11 includes a circular portion 11a and a protruding portion 11b as shown in FIG. 4(a). The protruding portion 11b is substantially triangular and protrudes outward from the circular portion 11a. When opening and closing the lid, the lid opening / closing device 1 is disposed on the upper surface 110s so that the tip of the protruding portion 11b faces the corner of the upper surface 110s as shown in FIG. 1.

[0022] FIG. 6A is a cross-sectional view of the lid opening / closing device 1 between EE' in FIG. 2(a), and only the main body 11 is shown in cross-section. FIG. 6B is a partially enlarged view of FIG. 6A, and the lid 120 is also shown. FIG. 7A is a cross-sectional view of the lid opening / closing device 1 at the position of FF' in FIG. 6A. As shown in FIGS. 6A and 7A, the main body 11 has a first surface 21, a second surface 22, a side surface 20, a recess 23, a contact portion 24, an opening 30, a through hole 25, a needle operating portion moving space 26, a biasing member arrangement space 27, a support body insertion hole 28, and a needle arrangement hole 29.

[0023] As shown in FIG. 9A described later, the first surface 21 is the surface facing the 18-liter can 100 when removing the lid 120 from the can body 110. The first surface 21 is the surface facing downward when removing the lid 120 from the can body 110.

[0024] The second surface 22 is the surface on the opposite side of the first surface 21. The second surface 22 faces the first surface. The second surface 22 is parallel to the first surface 21. The second surface 22 is the surface facing upward when removing the lid 120 from the can body 110.

[0025] The side surface 20 is disposed between the periphery of the first surface 21 and the periphery of the second surface 22. The side surface 20 is disposed perpendicular to the first surface 21 and the second surface 22.

[0026] The recess 23 is formed in the first surface 21. As shown in FIG. 6B, the lid 120 is fitted into the recess 23. Assuming that the central axis of the through hole 25 is O, the recess 23 is formed in a circular shape centered on the central axis O in a plan view as shown in FIG. 4(b). The recess 23 has an upper surface 23a and a side surface 23b. The upper surface 23a is formed parallel to the first surface 21 and the second surface 22. The side surface 23b is formed around the upper surface 23a. The side surface 23b is formed perpendicular to the first surface 21 and the second surface 22. The side surface 23b is provided over one circumference in the circumferential direction centered on the central axis O. The side surface 23b is formed from the first surface 21 toward the upper surface 23a.

[0027] When the abutting portion 24 is such that when the lid 120 is disposed in the recess 23, the edge portion 124 of the lid 120 can be abutted. In FIG. 6B, a state where the edge portion 124 of the upper surface 121 of the lid 120 is abutted against the abutting portion 24 is shown. The abutting portion 24 protrudes inward from the side surface 23b. The abutting portion 24 is disposed at the corner between the side surface 23b and the upper surface 23a. The abutting portion 24 is formed in an annular shape centered on the central axis O as shown in FIG. 4(b). The abutting portion 24 is disposed outside the opening 31 of the through hole 25 described later. The abutting surface 24a on the first surface 21 side of the abutting portion 24 is formed parallel to the first surface 21 and the second surface 22 as shown in FIG. 6A.

[0028] If the depth from the abutting surface 24a of the abutting portion 24 to the first surface 21 is d1, then as shown in FIG. 6B, the depth d1 is formed shallower than the thickness d2 of the lid 120. The thickness d2 of the lid portion is the length of the side surface 122. When the lid 120 is disposed in the recess 23 such that the edge portion 124 of the lid 120 abuts against the abutting portion 24, the lid 120 protrudes from the first surface 21.

[0029] As shown in FIG. 6B, the opening 30 faces the inner portion 125 of the edge portion 124 of the upper surface 121 in the direction along the central axis O in a state where the lid 120 is disposed on the abutting portion 24 (see FIG. 9C described later). As shown in FIG. 6B, the central portion 123 of the lid 120 is disposed inside the opening 30. The opening 30 is disposed inside the abutting portion 24 in the radial direction. Note that the radial direction is the direction approaching and moving away from the central axis O in a plane perpendicular to the central axis O.

[0030] As shown in FIG. 6A, the through hole 25 penetrates the main body portion 11. The through hole 25 is formed from the second surface 22 to the recess 23 of the first surface 21. The through hole 25 has an opening 31, a small diameter portion 32, a large diameter portion 33, and an opening 34. The opening 31 is disposed inside the recess 23. The opening 31 is disposed on the upper surface 23a of the recess 23. The opening 31 is circular in plan view. The opening 31 is disposed at the center of the upper surface 23a. The periphery of the opening 31 is surrounded by the upper surface 23a.

[0031] The small-diameter portion 32 is formed from the opening 31 toward the second surface 22. The small-diameter portion 32 is formed in a circular shape in plan view and is a cylindrical space. The diameter of the small-diameter portion 32 is the same as the diameter of the opening 31. The diameter of the small-diameter portion 32 is approximately the same as the diameter of the cylindrical portion 51 of the operation portion 12 described later, but is formed slightly larger than the diameter of the cylindrical portion 51 so that the cylindrical portion 51 can move.

[0032] The large-diameter portion 33 is formed from the end of the small-diameter portion 32 on the second surface 22 side toward the second surface 22. The large-diameter portion 33 is formed in a circular shape in plan view and is a cylindrical space. The diameter of the large-diameter portion 33 is formed larger than the diameter of the small-diameter portion 32. The diameter of the large-diameter portion 33 is approximately the same as the diameter of the flange portion 52 of the operation portion 12 described later, but is formed slightly larger than the flange portion 52 of the operation portion 12 so that the flange portion 52 can move.

[0033] The opening 34 opens to the second surface 22. The opening 34 is formed from the end of the large-diameter portion 33 on the second surface 22 side toward the second surface 22. The opening 34 is circular in plan view. The diameter of the opening 34 is formed smaller than the large-diameter portion 33. The diameter of the opening 34 is approximately the same as the diameter of the pressing operation portion 53 of the operation portion 12, but is formed slightly larger than the diameter of the pressing operation portion 53 so that the pressing operation portion 53 can move.

[0034] The needle operating portion moving space 26 is a space in which the needle operating portion 43 of the operation portion 12 can move in order to project the needle member 17 described later. As shown in FIG. 7A, the needle operating portion moving space 26 is connected to the large-diameter portion 33 in the radial direction. It is formed outside the large-diameter portion 33. The needle operating portion moving space 26 is substantially fan-shaped along the outer circumference of the large-diameter portion 33.

[0035] The biasing member placement space 27 is a space where the fourth biasing member 19 is placed. As shown in Fig. 7A, the biasing member placement space 27 is connected to the large-diameter portion 33 in the radial direction. The biasing member placement space 27 is formed outside the large-diameter portion 33. The biasing member placement space 27 has a substantially sector shape along the outer circumference of the large-diameter portion 33. The biasing member placement space 27 is connected to the needle operating portion movement space 26 in the circumferential direction. The needle operating portion movement space 26 protrudes more outward than the biasing member placement space 27. The surface of the needle operating portion movement space 26 on the biasing member placement space 27 side is shown as 26a. The surface 26a is arranged on the radially outer side of the biasing member placement space 27. In the needle operating portion movement space 26, the surface facing the surface 26a in the circumferential direction is shown as 26b. The circumferential direction is the circumferential direction centered on the central axis O.

[0036] As shown in Fig. 6A, the support body insertion hole 28 is for inserting the support body 15 described later. The needle placement hole 29 is for placing the needle member 17 described later. The support body insertion hole 28 and the needle placement hole 29 will be described in detail later.

[0037] (Operation portion 12) The operation portion 12 is operated by an operator. The operation portion 12 is arranged in the through hole 25 and the needle operating portion movement space 26, and a part of it is exposed from the main body portion 11. The operation portion 12 is movable along the through hole 25.

[0038] As shown in Figs. 5 and 6A, the operation portion 12 has a pressing portion 41, a rotation operation portion 42, and a needle operating portion 43. The pressing portion 41 is movably arranged in the through hole 25. Although it will be described in detail later, the pressing portion 41 presses the central portion 123 of the lid 120 arranged in the recess 23.

[0039] As shown in FIG. 6A, the pressing part 41 has a cylindrical part 51, a flange part 52, and a pressing operation part 53. The cylindrical part 51 is inserted into the small-diameter part 32 of the through-hole 25. The flange part 52 is arranged at the end of the cylindrical part 51 on the second surface 22 side. The flange part 52 is disk-shaped. The flange part 52 protrudes outward from the cylindrical part 51. The flange part 52 is formed with a diameter larger than that of the cylindrical part 51. The pressing operation part 53 is arranged at the end of the flange part 52 on the second surface 22 side. The pressing operation part 53 is cylindrical. The pressing operation part 53 protrudes from the second surface 22 through the opening 34. The pressing operation part 53 is the part pressed by the operator.

[0040] The rotation operation part 42 is operated by the operator when rotating the operation part 12 around the central axis O. The rotation operation part 42 is arranged on the outer peripheral surface of the pressing part 41. The rotation operation part 42 is formed radially outward from the outer peripheral surface of the pressing operation part 53. The rotation operation part 42 is exposed outside the main body part 11. The rotation operation part 42 is substantially plate-shaped. A through-hole 42a is formed in the rotation operation part 42 in a direction parallel to the central axis O. This through-hole 42a is formed so that the operator can easily grip the rotation operation part 42, but it is not necessarily formed.

[0041] The needle operating part 43 can contact the needle member 17 and moves together with the movement of the pressing part 41 on the first surface 21 side to project the needle member 17 from the first surface 21. The needle operating part 43 is arranged on the outer peripheral surface of the pressing part 41. The needle operating part 43 is formed radially outward from the outer peripheral surface of the flange part 52. In a plan view, the needle operating part 43 overlaps with the rotation operation part 42. The needle operating part 43 is substantially plate-shaped. The needle operating part 43 is rotatably arranged around the central axis O within the above-described needle operating part movement space 26. One end of a fourth biasing member 19 described later is locked to the needle operating part 43. When the operator rotates the rotation operation part 42 counterclockwise (see arrow L in FIG. 7A), the pressing part 41 rotates around the central axis O, and the needle operating part 43 also rotates counterclockwise within the needle operating part movement space 26.

[0042] (First biasing member 13) The first biasing member 13 biases the operation unit 12 toward the second surface 22 side. The first biasing member 13 is, for example, a coil spring as shown in FIG. 6A. The first biasing member 13 is disposed around the cylindrical portion 51. The first biasing member 13 is disposed between the bottom surface 33a on the first surface 21 side of the large-diameter portion 33 and the flange portion 52. One end of the first biasing member 13 on the first surface 21 side is in contact with the bottom surface 33a, and the other end on the second surface 22 side is in contact with the flange portion 52.

[0043] In a state where the operator is not pressing the operation unit 12, the operation unit 12 is biased toward the second surface 22 side by the first biasing member 13, and the flange portion 52 is in contact with the ceiling surface 33b on the second surface 22 side of the large-diameter portion 33. The operator can move the operation unit 12 toward the first surface 21 side by pressing the pressing operation unit 53 toward the first surface 21 side against the biasing force of the first biasing member 13.

[0044] (Holding portion 14) The holding portion 14 holds the state in which the lid 120 is fitted in the recess 23. The holding portion 14 is, for example, a magnet. The holding portion 14 is disposed on the pressing portion 41. The holding portion 14 is disposed, for example, at the tip on the first surface 21 side of the cylindrical portion 51. The lid 120 can be held in the recess 23 by the magnetic force of the holding portion 14.

[0045] (Support 15, second biasing member 16) A plurality of supports 15 are arranged on the first surface 21 side of the main body portion 11. When the lid opening and closing device 1 is placed on the upper surface 110s of the can body 110 or a placement surface such as a workbench with the first surface 21 facing downward, the plurality of supports 15 support the main body portion 11 so as to be separated from the placement surface. In the present embodiment, as shown in FIG. 4(b), four supports 15 are provided. The four supports 15 are arranged around the recess 23.

[0046] As shown in FIG. 6A, the support 15 has a support body 61 and an end portion 62. The support body 61 is cylindrical. The end portion 62 is disposed at the end on the second surface 22 side of the support body 61. The end portion 62 is cylindrical. The end portion 62 is formed to have a larger diameter than the support body 61.

[0047] On the first surface 21 of the main body portion 11, four support member insertion holes 28 are formed. Each support member insertion hole 28 extends from the first surface 21 toward the second surface 22. Each support member insertion hole 28 has a first hole portion 28a and a second hole portion 28b. The first hole portion 28a is a columnar space. The first hole portion 28a opens to the first surface 21. The inner diameter of the first hole portion 28a is approximately the same as the diameter of the support portion main body 61, but is formed slightly larger than the diameter of the support portion main body 61 so that the support portion main body 61 can move. The second hole portion 28b is connected to the end of the first hole portion 28a on the second surface 22 side. The inner diameter of the second hole portion 28b is formed larger than the inner diameter of the first hole portion 28a. The inner diameter of the second hole portion 28b is approximately the same as the diameter of the end portion 62, but is formed slightly larger than the diameter of the end portion 62 so that the end portion 62 can move. On the surface 28c of the second hole portion 28b on the second surface 22 side, a columnar boss 281 is disposed toward the first surface 21.

[0048] The end portion 62 is disposed in the second hole portion 28b so as to be movable in a direction parallel to the central axis O. The support portion main body 61 protrudes from the first surface 21 through the first hole portion 28a. Since the inner diameter of the first hole portion 28a is formed smaller than the outer diameter of the end portion 62, the support member 15 is restricted from falling out of the support member insertion hole 28.

[0049] The second biasing member 16 biases the support member 15 in a direction protruding from the first surface 21. The second biasing member 16 is disposed in each second hole portion 28b. The second biasing member 16 is, for example, a coil spring. The second biasing member 16 is disposed around the boss 281. One end of the second biasing member 16 on the first surface 21 side abuts against the end portion 62 of the support member 15, and the other end of the second biasing member 16 on the second surface 22 side abuts against the surface 28c of the second hole portion 28b.

[0050] By the second biasing member 16, the support member 15 is biased in a direction protruding from the first surface 21.

[0051] In this embodiment, four second biasing members 16 are provided. The combined elastic force of the four second biasing members 16 can support the self-weight of the lid opening / closing device 1. It should be noted that the elastic force of the first biasing member 13 described above is preferably smaller than the combined elastic force of the four second biasing members 16. Thereby, when the lid opening / closing device 1 is placed on the mounting surface by a plurality of supports 15 and the operation unit 12 is pushed toward the first surface 21 side, the support 15 does not move toward the main body unit 11 side, and the operation unit 12 can move toward the first surface 21 side.

[0052] (Needle member 17, third biasing member 18, fourth biasing member 19) The needle member 17 is used when making a hole in the can body 110. As shown in FIG. 6A, the needle member 17 is housed in the main body unit 11. The needle member 17 is disposed in the needle arrangement hole 29 of the main body unit 11. The needle arrangement hole 29 has an opening on the first surface 21 and is formed parallel to the central axis O from the first surface 21 to the needle operating portion movement space 26. The needle arrangement hole 29 has a first hole portion 81, a second hole portion 82, and a third hole portion 83.

[0053] The first hole portion 81 is formed from the first surface 21 toward the second surface 22. The first hole portion 81 opens on the first surface 21. The first hole portion 81 is a cylindrical space. The second hole portion 82 is formed from the end of the first hole portion 81 on the second surface 22 side toward the second surface 22. The second hole portion 82 is a cylindrical space. The inner diameter of the second hole portion 82 is formed larger than the inner diameter of the first hole portion 81. The third hole portion 83 is formed from the end of the second hole portion 82 on the second surface 22 side to the needle operating portion movement space 26. The third hole portion 83 is a cylindrical space. The third hole portion 83 opens into the needle operating portion movement space 26. The inner diameter of the third hole portion 83 is formed larger than the inner diameter of the second hole portion 82.

[0054] The needle member 17 has a needle body 71, a protruding portion 72, and an end portion 73. The needle body 71 is formed in a columnar shape with a pointed end on the first surface 21 side.

[0055] The needle body 71 is disposed in the first hole portion 81, the second hole portion 82, the third hole portion 83, and the needle operating portion moving space 26. The needle body 71 protrudes from the needle placement hole 29 into the needle operating portion moving space 26. The inner diameter of the third hole portion 83 is formed to be slightly larger than the maximum diameter of the needle body 71 so that the needle body 71 can move.

[0056] The protruding portion 72 protrudes outward from around the side surface of the needle body 71. The protruding portion 72 is formed in an annular shape. The protruding portion 72 is movably disposed in the second hole portion 82. The end portion 73 is disposed at the end on the second surface 22 side of the needle body 71. The end portion 73 is disposed in the needle operating portion moving space 26. The end portion 73 is cylindrical. The outer diameter of the end portion 73 is formed to be larger than that of the needle body 71. The inner diameter of the second hole portion 82 is substantially the same as the outer diameter of the protruding portion 72, but is formed to be slightly larger than the outer diameter of the protruding portion 72 so that the protruding portion 72 can move.

[0057] The third biasing member 18 biases the needle member 17 in the direction of housing the needle member 17 in the main body portion 11, that is, toward the second surface 22 side. The third biasing member 18 is, for example, a coil spring. The third biasing member 18 is disposed around the needle body 71. The third biasing member 18 is disposed between the surface 82a on the first surface 21 side of the second hole portion 82 and the protruding portion 72. One end of the third biasing member 18 on the first surface 21 side abuts against the surface 82a, and the other end of the third biasing member 18 on the second surface 22 side abuts against the protruding portion 72. By the third biasing member 18, the needle member 17 is biased toward the second surface 22 side. Since the inner diameter of the third hole portion 83 is formed to be smaller than the outer diameter of the protruding portion 72, the movement of the protruding portion 72 toward the second surface 22 side is restricted.

[0058] As shown in Fig. 7A, the fourth biasing member 19 is disposed in the biasing member placement space 27. In the biasing member placement space 27, a protrusion 27a is disposed parallel to the central axis O. One end of the fourth biasing member 19 is locked to the protrusion 27a. The other end of the fourth biasing member 19 is locked to a hole 43a formed in the needle actuating portion 43. The fourth biasing member 19 biases the needle actuating portion 43 toward the biasing member placement space 27 side, and the needle actuating portion 43 abuts against the surface 26a of the needle actuating portion movement space 26. The position P1 of the needle actuating portion 43 in the state of abutting against the surface 26a corresponds to an example of a non-extrudable position. The rotation of the operating portion 12 by the fourth biasing member 19 is restricted by the abutment of the needle actuating portion 43 against the surface 26a.

[0059] When the above-described rotation operating portion 42 is rotated in the counterclockwise direction (see arrow L) in Fig. 7A, the needle actuating portion 43 also rotates in the counterclockwise direction. Fig. 7B is a view showing a state in which the needle actuating portion 43 has rotated counterclockwise from the state of Fig. 7A. As shown in Fig. 7B, the movement of the needle actuating portion 43 in the counterclockwise rotation is restricted by abutting against the surface 26b. The position P2 of the needle actuating portion 43 in the state of abutting against the surface 26b corresponds to an example of an extrudable position. At the position P2, the needle actuating portion 43 is disposed on the second surface 22 side of the needle member 17.

[0060] Therefore, when the operator presses the operating portion 12 toward the first surface 21 side with the needle actuating portion 43 disposed at the position P2, as shown in Fig. 8, the end portion 73 of the needle member 17 is pushed toward the first surface 21 side by the needle actuating portion 43. When the end portion 73 is pushed toward the first surface 21 side, the tip of the needle member 17 protrudes from the first surface 21, and a hole is formed in the can body 110. Note that, when the needle actuating portion 43 is disposed at the position P1, since the needle actuating portion 43 is not located on the second surface 22 side of the needle member 17, the needle member 17 cannot be pushed even if the pressing portion 41 is moved toward the first surface 21 side.

[0061] (Operation of the lid opening and closing device 1) The operation of the lid opening and closing device 1 of the present embodiment will be described.

[0062] (Opening operation) First, the operation of opening the lid using the lid opening and closing device 1 of the present embodiment will be described.

[0063] As shown in FIG. 9A, the lid opening / closing device 1 is disposed on the upper surface 110s of the can body 110 so as to cover the lid 120 of the 18-liter can 100. At this time, the lid opening / closing device 1 is disposed on the upper surface 110s such that the recess 23 is disposed above the lid 120 and the lid 120 fits into the recess 23. In this embodiment, the lid 120 fitting into the recess 23 includes a state where the lid 120 is not in contact with the contact portion 24 as shown in FIG. 9A. The protruding amount d3 of the support 15 protruding from the first surface 21 is preferably set smaller than the height d4 from the upper surface 110s to the upper end 122g of the side surface 122. In this case, the lid opening / closing device 1 can be aligned with the lid 120 so that the lid 120 is disposed inside the side surface 23b. The inner diameter of the side surface 23b of the recess 23 is formed to generally match the outer diameter of the lid 120.

[0064] Next, as shown in FIG. 9B, the operation portion 12 of the lid opening / closing device 1 is pushed toward the first surface 21 side by an operator, and the operation portion 12 moves toward the lid 120 side with respect to the main body portion 11. As a result, the pressing portion 41 of the operation portion 12 pushes the central portion 123 of the lid 120 toward the can body 110 side, and as shown in FIG. 3(a), the lid 120 warps and the lid 120 can be opened.

[0065] Next, when the operator releases the hand from the operation portion 12, the operation portion 12 is biased by the first biasing member 13 and moves toward the second surface 22 side. Along with the movement of the operation portion 12, as shown in FIG. 9C, the lid 120 is lifted by the magnetic force of the holding portion 14 disposed at the tip of the operation portion 12 and is held in the recess 23. When the lid 120 is held in the recess 23, the edge portion 124 is in contact with the contact portion 24 in the recess 23.

[0066] In this way, when the lid opening / closing device 1 is placed on the placement surface 200s such as a workbench while being held in the recess 23, the elastic forces of the four second biasing members 16 are set so that the protruding amount d5 of the support body 15 from the first surface 21 is larger than the amount d6 (= d2 - d1) by which the lid 120 protrudes from the first surface 21. Thereby, even when the lid opening / closing device 1 is placed on the workbench 200, the lid 120 can be held in the recess 23 so as not to contact the placement surface 200s.

[0067] (Closing operation) Next, the operation of closing the lid using the lid opening / closing device 1 of the present embodiment will be described.

[0068] As shown in FIG. 9D, the lid opening / closing device 1 holding the lid 120 is placed on the upper surface 110s so as to cover the pouring port portion 111 of the can body 110.

[0069] Next, as shown in FIG. 9E, the main body portion 11 of the lid opening / closing device 1 is pushed down by the operator toward the can body 110. As a result, the contact portion 24 of the main body portion 11 presses the edge portion 124 of the lid 120. At this time, since the opening 30 is provided inside the contact portion 24 in the radial direction of the main body portion 11, the inner portion 125 of the lid 120 is not pressed. Therefore, as shown in FIG. 3(b), the warp of the lid 120 can be restored and the lid 120 can be closed.

[0070] (Puncturing operation) Next, the puncturing operation of the can body 110 using the lid opening / closing device 1 of the present embodiment will be described.

[0071] By gripping and rotating the rotation operation portion 42 counterclockwise, as shown in FIG. 7B, the needle operation portion 43 rotates counterclockwise, contacts the surface 26b, and is disposed at the position P2.

[0072] When the operator presses the operation portion 12 toward the first surface 21 while the needle operation portion 43 is disposed at the position P2, as shown in FIG. 8, the end portion 73 of the needle member 17 is pushed toward the first surface 21 by the needle operation portion 43, the tip of the needle member 17 protrudes from the first surface 21, and a hole is pierced in the can body 110.

[0073] (Features, etc.) In the lid opening / closing device 1 of the present embodiment, there are provided a contact portion 24 that can contact the edge portion 124 of the upper surface 121 of the lid 120, and a pressing portion 41 that is movably disposed in the main body portion 11 and can press the central portion 123 of the lid 120 fitted into the recess 23 through the opening 30. By pressing the central portion 123 of the lid 120 with the pressing portion 41, the lid 120 is warped, and the lid 120 can be opened. Further, by pushing the main body portion 11 toward the can body 110 with the contact portion 24 in contact with the edge portion 124 of the lid 120, the warp of the lid 120 is restored, and the lid 120 can be closed.

[0074] In the lid opening / closing device 1 of the present embodiment, the main body portion 11 has a through hole 25 facing the opening 30, and the pressing portion 41 is disposed in the through hole 25. Thereby, the pressing portion 41 can move along the through hole 25 to press the central portion 123 of the lid 120.

[0075] The lid opening / closing device 1 of the present embodiment includes a first biasing member 13 that biases the pressing portion 41 toward the second surface 22 side, and a holding portion 14 that is disposed on the pressing portion 41 and holds the lid 120 in the recess 23. Thereby, after the lid 120 is opened from the can body 110, it can be held by the lid opening / closing device 1 without the operator having to move the lid 120 from the can body 110 and store it elsewhere.

[0076] The lid opening / closing device 1 of the present embodiment includes a support body 15 that protrudes from the first surface 21 so as to support the main body portion 11, and a second biasing member 16 that biases the support body 15 in the direction in which it protrudes from the first surface 21. Thereby, the lid 120 held by the holding portion 14 can be separated from the placement surface. Further, since the lid 120 is separated from the placement surface, it is possible to reduce the adhesion of dust, dirt, etc. to the lid 120.

[0077] In the lid opening / closing device 1 of the present embodiment, the elastic force by the first biasing member 13 is smaller than the total elastic force of the plurality of second biasing members 16. Thereby, in a state where the main body portion 11 is placed on the upper surface 110s of the can main body 110, when the pressing portion 41 is pushed downward, the main body portion 11 does not sink and only the pressing portion 41 can be pushed down.

[0078] In the lid opening / closing device 1 of the present embodiment, the needle operating portion 43 moves between a position P1 where the needle member 17 can be pushed out and a position P2 where the needle member 17 cannot be pushed out by the rotation of the pressing portion 41. In a state where the needle operating portion 43 is disposed at the position P2, when the pressing portion 41 is moved toward the first surface 21 side, the needle operating portion 43 moves toward the first surface 21 side and pushes out the needle member 17 from the opening. Thereby, by simply placing the lid opening / closing device 1 on the can main body 110, rotating the pressing portion 41 and then pushing it, the needle member 17 can be pushed out to form a hole in the can main body 110.

[0079] (Other embodiments) As described above, one embodiment of the present invention has been described. However, the present invention is not limited to the above embodiment, and various modifications are possible without departing from the gist of the invention. In particular, the plurality of embodiments and modification examples described in this specification can be arbitrarily combined as necessary.

[0080] (A) The lid opening / closing device 1 of the above embodiment is provided with a needle member 17 for puncturing an air hole in the can main body 110, but the needle member 17 may not be provided.

[0081] (B) The lid opening / closing device 1 of the above embodiment is used when opening and closing the lid of an 18 - liter can, but it is not limited to an 18 - liter can, and it can be applied to a container provided with a lid that opens when the central portion is pushed and closes when the edge portion is pushed.

[0082] (C) In the above-described embodiment, as shown in FIG. 9C, in the state where the lid 120 is held in the recess 23, the holding portion 14 is separated from the lid 120, but the holding portion 14 may be in contact with the lid 120 together with the pressing portion 41.

[0083] (D) In the lid opening / closing device 1 of the above-described embodiment, four supports 15 are provided, but the number is not limited to four. As long as the main body portion 11 can be supported on the placement surface, three supports may be provided, or five or more supports 15 may be provided.

[0084] (E) In the lid opening / closing device 1 of the above-described embodiment, the contact portion 24 is formed over the entire circumference, but it is not limited thereto. As long as the warp of the lid 120 can be restored, it may be divided into a plurality of portions.

[0085] (F) In the lid opening / closing device 1 of the above-described embodiment, the first biasing member 13, the second biasing member 16, the third biasing member 18, and the fourth biasing member 19 all use coil springs, but as long as they can bias, they are not limited to coil springs, and leaf springs or the like may be used.

[0086] (G) In the lid opening / closing device 1 of the above-described embodiment, the contact portion 24 is connected to the upper surface 23a of the recess 23, but it is not limited thereto, and a space may be provided between the contact portion 24 and the upper surface 23a.

Industrial Applicability

[0087] The lid opening / closing device of the present disclosure can easily open and close the lid, and is useful for, for example, opening and closing the lid of an 18-liter can.

Explanation of Reference Numerals

[0088] 1: Lid opening / closing device 11: Main body portion 24: Contact portion 30: Opening 41: Pressing portion 100: 18-liter can 120: Lid 121: Upper surface 122: Side surface 123: Central part 124: Edge part 125: Inner part

Claims

1. A lid opening and closing device for opening and closing a lid of a can, comprising: a first surface facing the can when the lid is opened and closed; a recess formed in the first surface into which the lid fits; a contact portion disposed on a side surface of the recess and capable of contacting an edge portion of an upper surface of the lid; and an opening facing a portion of the upper surface of the lid inside the edge portion when the edge portion of the lid is in contact with the contact portion, wherein a depth from the first surface to the contact portion is shallower than a thickness of the lid, a main body portion; a pressing portion movably disposed on the main body portion and capable of pressing a central portion of the lid fitted into the recess through the opening. A lid opening and closing device.

2. The main body portion includes: a second surface facing the first surface; a through hole formed from the second surface to the recess and facing the opening, wherein the pressing portion is disposed in the through hole. The lid opening and closing device according to claim 1.

3. a first biasing member that biases the pressing portion toward the second surface side; a holding portion disposed on the pressing portion and holding the lid in the recess. The lid opening and closing device according to claim 2.

4. a plurality of supports protruding from the first surface so as to support the main body portion; a second biasing member that biases each of the supports in a direction protruding from the first surface. The lid opening and closing device according to claim 3.

5. An elastic force of the first biasing member is smaller than an elastic force of the plurality of second biasing members. The lid opening and closing device according to claim 4.

6. a needle member built in the main body portion and capable of protruding from an opening disposed on the first surface; a needle actuating portion fixed to the pressing portion and capable of pushing out the needle member from the opening, wherein the needle actuating portion moves between a pushable position where the needle member can be pushed out and a non-pushable position where the needle member cannot be pushed out by rotation of the pressing portion, and when the pressing portion is moved toward the first surface side in a state where the needle actuating portion is disposed at the pushable position, the needle actuating portion moves toward the first surface side and pushes out the needle member from the opening. The lid opening and closing device according to claim 1.

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