JP6033589B2 - Screw cap - Google Patents

Description

  The present invention relates to a screw cap that is removably screwed to a mouth tube portion of a container.

  The outer peripheral surface of the screw cap is generally knurled in order to facilitate screwing and removal (see, for example, Patent Document 1).

JP 2004-231253 A

  On the other hand, in the case of an elderly person or a child, it is preferable that the cap can be easily opened with a small force because the force to grip the cap (grip force) is small. However, in the case of knurling the outer peripheral surface of the cap like a conventional screw cap, there is room for improvement in ease of opening and closing. In addition, when knurling is performed on the outer peripheral surface of the cap, since irregularities are formed on the outer peripheral surface of the cap, the outer shape of the cap is restricted. That is, in the conventional screw cap, the outer shape of the cap is sacrificed in order to increase the grip force when opening and closing.

  An object of the present invention is to provide a novel screw cap capable of selecting various appearance shapes of the cap while ensuring a gripping force with respect to the screw cap.

The present invention has a peripheral wall that hangs down from the outer edge of the top wall, and has an outer cylinder in which a space is formed, and is disposed inside the outer cylinder and is removable from the mouth tube of the container. An inner cylinder having a peripheral wall to be screwed;
While the outer wall of the outer cylinder is formed of a material that can be deformed and restored,
The lower end of the peripheral wall of the outer cylindrical body and the lower end of the peripheral wall of the inner cylindrical body are each provided with a fixing portion that prevents the outer cylinder from coming off and prevents rotation, and the peripheral wall of the inner cylindrical body excluding the fixing portion and the outer cylindrical body An annular gap that circulates around the axis is formed between the circumferential wall and the outer circumferential surface of the circumferential wall of the inner cylinder that forms the gap is locally contacted by crushing the circumferential wall of the outer cylinder. The anti-slip portion is configured to be caught in the circumferential direction by the screwdriver.

  In the present invention, it is sufficient that at least the peripheral wall of the outer cylinder body is made of a material that can be deformed and restored, and preferably, the entire outer cylinder body is made of a material that can be deformed and restored. Such materials include soft materials such as elastomers. The anti-slip portion can be formed, for example, by subjecting the outer peripheral surface of the inner cylindrical body to knurling or spline processing, or configuring the outer peripheral surface of the inner cylindrical body in a polygonal cross section. Further, the anti-slip portion is formed by extending at least one protrusion in the axial direction on the outer peripheral surface of the inner cylindrical body, and of course, the inner cylindrical body has an irregular shape having an asymmetric sectional shape around the axial line. It is also possible to configure by.

  Furthermore, in the present invention, the outer peripheral surface of the outer cylindrical body can be knurled or splined, or the outer cylindrical body can be formed into a polygonal shape. It is preferable to form a cylindrical shape having an outer peripheral surface. Further, the outer peripheral surface of the outer cylindrical body can also have an irregular shape having an asymmetric cross-sectional shape around the axis.

  Moreover, in this invention, it can assemble | attach in the state which formed the clearance gap between the top wall of an inner cylinder, and the top wall of an outer cylinder, or can be assembled | attached in the state which mutually contacted.

  In the present invention, the peripheral wall of the outer cylindrical body is locally squeezed to the engaging portion that constitutes the outer peripheral surface of the inner cylindrical body by squeezing and deforming the peripheral wall of the outer cylindrical body along the external shape of the inner cylindrical body. When the deformed portion is caught in the circumferential direction, the outer cylindrical body becomes familiar with the hand and becomes easy to grasp. For this reason, it is possible to open and close the cap relatively easily even for an elderly person or a child who does not have a large gripping force.

  The outer cylinder is deformed when it is grasped by hand, and the deformation is restored when the grasp is released. For this reason, since it is not always necessary to perform knurling etc. on the outer peripheral surface of the outer cylindrical body, the external shape of the screw cap can be selected in various ways.

  Therefore, according to this invention, the external appearance shape of a cap can be selected variously, ensuring the grip force with respect to a screw cap.

It is a screw cap of one embodiment of the present invention, (a) is a side view showing the state before gripping the cap in a partial cross section, (b) is gripping the cap and an outer cylinder It is a side view which shows the state which deform | transformed the body in a partial cross section. It is a disassembled perspective view which shows the outer cylinder body and inner cylinder body which concern on the screw cap which is the same embodiment from upper direction. It is a screw cap which is other embodiment of this invention, Comprising: (a) is a perspective view which shows the inner cylinder body of the cap from upper direction, (b) is the outer cylinder body which hold | gripped the cap and is It is a perspective view which shows the state which deform | transformed.

  Hereinafter, various embodiments of a screw cap according to the present invention will be described in detail with reference to the drawings.

  In FIG. 1, the code | symbol 10 is a screw cap which is one Embodiment of this invention. Reference numeral 10A denotes an outer cylinder that constitutes a screw cap. The outer cylinder 10 </ b> A has a peripheral wall 12 that hangs down integrally from the outer edge of the top wall 11. The peripheral wall 12 circulates around the axis O. In this embodiment, the peripheral wall 12 is configured in a cylindrical shape having a smooth outer peripheral surface 12f. The outer cylinder 10A is made of a material that can be deformed and restored. Examples of such materials include soft materials such as elastomers.

  Reference numeral 10 </ b> B is a synthetic resin-made inner cylinder that similarly forms a screw cap. The inner cylindrical body 10B also has a peripheral wall 14 that hangs down integrally from the outer edge of the top wall 13 like the outer cylindrical body 10A. The peripheral wall 14 also circulates around the axis O. The inner cylinder 10B can be removably screwed to the mouth tube portion (not shown) of the container. In this embodiment, a threaded portion 10 s is formed on the inner peripheral surface of the peripheral wall 14. Moreover, the top wall 13 of the inner cylinder 10B has a flat upper end surface 13f, and the top wall 11 of the outer cylinder 10A is assembled in contact with each other as shown in FIG. .

  Reference numerals C1 and C2 denote fixing portions that fix the outer cylinder body 10A and the inner cylinder body 10B. In the present embodiment, the outer cylinder body 10A and the inner cylinder body 10B are held against each other by the fixing portion C1. As the fixing portion C1, for example, as shown in the drawing, the inner portion of the outer cylindrical body 10A that circulates around the axis O provided on the inner peripheral surface of the lower end portion of the peripheral wall (hereinafter referred to as “the outer cylindrical peripheral wall lower end portion”) 12a. The annular convex portion p in the direction and the annular concave portion n that circulates around the axis O provided on the outer peripheral surface of the peripheral wall lower end portion (hereinafter referred to as “inner cylindrical peripheral wall lower end portion”) 14a in the inner cylindrical body 10B. The concave-convex fitting fitted from the above is mentioned. As a result, the outer cylindrical body 10A and the inner cylindrical body 10B are joined together without coming out along the axis O. Further, in this embodiment, the outer cylindrical body 10A and the inner cylindrical body 10B are prevented from rotating by the fixing portion C2. As the fixing portion C2, for example, as shown in the figure, a longitudinal groove g provided on the inner peripheral surface of the outer cylindrical peripheral wall lower end portion 12a with a circumferential interval, and an outer peripheral surface of the inner cylindrical peripheral wall lower end portion 14a. And fitting by engagement with vertical ribs r provided at intervals. As a result, the outer cylindrical body 10A and the inner cylindrical body 10B are coupled together without idling around the axis O.

  Further, between the peripheral wall 12 of the outer cylindrical body 10A and the peripheral wall 14 of the inner cylindrical body 10B, an annular gap ΔC that circulates around the axis O is formed in a region excluding the fixing portions C1 and C2. In this embodiment, as shown in FIG. 1 (a), the gap ΔC causes the outer cylindrical peripheral wall lower end 12a to protrude inward to form a step inside the peripheral wall 12, and the inner cylindrical peripheral wall lower end 14a. Is formed outward by projecting outward to form a step on the outer side of the peripheral wall 14. The gap ΔC can also be formed by projecting either the outer cylindrical peripheral wall lower end 12a or the inner cylindrical peripheral wall lower end 14a.

  The peripheral wall 12b of the outer cylindrical body 10A that forms the gap ΔC constitutes a peripheral wall main body (hereinafter, “peripheral wall main body 12b”) that can be deformed and restored. Further, the peripheral wall 14b of the inner cylindrical body 10B that forms the gap ΔC constitutes a non-slip portion (hereinafter referred to as “anti-slip portion 14b”). On the outer peripheral surface of the anti-slip portion 14b, there is provided at least one engaging portion S that is locally contacted by crushing the peripheral wall body 12b and hooked in the circumferential direction by its screwdriver. In this embodiment, as shown in FIG. 2, the outer peripheral surface of the anti-slip portion 14b is configured in a polygonal shape (in this embodiment, a 12-sided shape), and its edges (in this embodiment, 12 edges) S1 are respectively It functions as the locking portion S. In FIG. 2, the reference numeral S <b> 1 is attached to only one place by way of example.

  In this embodiment, the screw cap 10 includes an outer cylindrical body 10A and an inner cylindrical body 10B that can be deformed and restored, and the inner cylindrical body 10B is provided with a non-slip portion 14b. As shown in the cross section of the left half of FIG. 1B, the peripheral wall main body 12b of the outer cylindrical body 10a is deformed by gripping and deforming the peripheral wall main body 12b along the external shape of the inner cylindrical body 10B. As shown in the side view of the right half of the figure, the outer cylindrical body 10A is locally contacted with the plurality of edges S1 constituting the anti-slip portion 14b of 10B, and the outer cylindrical body 10A is caught in the circumferential direction as shown in the side view of the right half of FIG. Become familiar with the hand and easy to grasp. For this reason, even an elderly person or a child who does not have a large gripping force can open and close the screw cap 10 relatively easily. In particular, when the outer cylinder 10A is made of a soft material such as elastomer as in the present embodiment, a large gripping force can be secured on the outer peripheral surface of the outer cylinder 10A that is touched by the hand. That is, when a soft material such as an elastomer is used for the outer cylindrical body 10A, the screw cap 10 can be opened and closed more easily by exhibiting an anti-slip effect.

  Further, the outer cylinder 10A is deformed as shown in FIG. 1 (b) when grasped by hand, and the deformation is restored as shown in FIG. 1 (a) when the grasp is released. For this reason, since the outer peripheral surface of the peripheral wall 12 in the outer cylindrical body 10A does not necessarily need to be knurled or the like as in the present embodiment, various external shapes of the screw cap can be selected.

  Therefore, according to this embodiment, it is possible to select various external shapes of the screw cap 10 while ensuring a gripping force with respect to the screw cap 10.

  In particular, if the peripheral wall 12 of the outer cylindrical body 10A is formed in a cylindrical shape having a smooth outer peripheral surface 12f as in this embodiment, the outer peripheral surface 12f can be decorated such as printing. For this reason, the external appearance of the screw cap 10 can be variously changed without changing the shape of the outer cylindrical body 10 </ b> A, and the external appearance can be given to the screw cap 10.

  Moreover, in this form, as above-mentioned, the top wall 11 of 10 A of outer cylinders, and the top wall 13 of the inner cylinder 10B are assembled | attached in the state which mutually contacted. In this case, since the peripheral wall main body 12b can be largely extended to the whole anti-slip | skid part 14b, it becomes familiar with a hand and becomes easy to grasp. However, according to the present invention, the top wall 11 of the outer cylindrical body 10A and the top wall 13 of the inner cylindrical body 10B can be assembled in a state where they are spaced from each other.

  By the way, the anti-slip | skid part 14b can also be comprised by giving a spline process to the outer peripheral surface of the surrounding wall 14b in the inner cylinder 10B. Fig.3 (a) shows the inner cylinder 20B which concerns on the screw cap 20 which is other embodiment of this invention. Hereinafter, parts substantially the same as those in FIGS. 1 and 2 have the same reference numerals, and the description thereof is omitted.

  In this embodiment, as described above, the anti-slip portion 12b is splined to form the edge S2, and each of the edges S2 functions as the locking portion S. Also in this embodiment, the peripheral wall main body 12b of the outer cylindrical body 10A is crushed and deformed along the external shape of the inner cylindrical body 20B, so that the peripheral wall main body 12b of the outer cylindrical body 10A is provided with a plurality of anti-slip portions 12b. While the edge S2 is locally contacted and the deformed portion is caught in the circumferential direction as shown in FIG. 3B, the outer cylindrical body 10A becomes familiar with the hand and is easily grasped. For this reason, this embodiment can also open and close the cap 10 relatively easily even for elderly people or children who do not have a large gripping force, as in the embodiment shown in FIGS.

  In addition, according to this invention, the latching | locking part S can be comprised by the at least 1 protrusion extended in the axis line O direction. Further, a plurality of protrusions or edges formed by knurling the outer peripheral surface of the inner cylindrical body 10B can be configured as the locking portion S. Further, the locking portion S can be formed by making the inner cylindrical body 10B an asymmetrical shape around the axis O.

  Similarly, the outer cylindrical body 10A can be knurled on the outer peripheral surface of the outer cylindrical body 10A, or the peripheral wall 12 of the outer cylindrical body 10A can be formed into a polygonal shape, or can be splined. is there. In addition, the outer peripheral surface of the outer cylindrical body 10A can also have an irregular shape having an asymmetric cross-sectional shape around the axis O.

  Although the above description shows various embodiments of the present invention, various modifications can be made according to the present invention. Furthermore, items adopted in the configuration of each embodiment can be appropriately transferred to each other.

10 Screw cap (first embodiment)
DESCRIPTION OF SYMBOLS 10A Outer cylinder body 10B Inner cylinder body 11 Top wall 12 Perimeter wall 12a Perimeter wall lower end part 12b Perimeter wall main body 13 Top wall 14 Perimeter wall 14a Perimeter wall lower end part 14b Non-slip part 20 Screw cap (2nd Embodiment)
20B inner cylinder

Claims (3)

An outer cylinder that has a peripheral wall that hangs down from the outer edge of the top wall, and in which a space is formed, and a peripheral wall that is disposed inside the outer cylinder and is removably screwed to the mouth tube of the container An inner cylinder having
While the outer wall of the outer cylinder is formed of a material that can be deformed and restored,
The lower end of the peripheral wall of the outer cylindrical body and the lower end of the peripheral wall of the inner cylindrical body are each provided with a fixing portion that prevents the outer cylinder from coming off and prevents rotation, and the peripheral wall of the inner cylindrical body excluding the fixing portion and the outer cylindrical body An annular gap that circulates around the axis is formed between the circumferential wall and the outer circumferential surface of the circumferential wall of the inner cylinder that forms the gap is locally contacted by crushing the circumferential wall of the outer cylinder. A screw cap characterized in that it is configured as a non-slip portion that is caught in the circumferential direction by the screwdriver.   The screw cap according to claim 1, wherein the outer wall of the outer cylindrical body is formed in a cylindrical shape having a smooth outer peripheral surface.   3. The screw cap according to claim 1, wherein the top wall of the inner cylinder and the top wall of the outer cylinder are assembled in contact with each other.

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