JP2003221053A - Hinge structure of synthetic resin-made cap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hinge structure of a synthetic resin-made cap causing no twisting phenomenon during operations of opening and closing the cap and keeping the hinge from protruding on the circumferential surface of the cap main body when a lid is fitted with the cap main body. <P>SOLUTION: The hinge member has the hinge and outer connecting pieces arranged on its both sides, notch step portions are arranged on each of the cap main body side and the lid side for housing the hinge in the concave portion, and the length of the hinge and the position of the upper surface of the hinge are specified to keep the hinge from protruding to the circumferential surface of the cap main body. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin cap fitted to the mouth of a container or the like, and more particularly to a hinge structure of a synthetic resin cap integrally connecting a cap body and a lid. Is.

[0002]

2. Description of the Related Art Various conventional hinge structures for synthetic resin caps have been proposed, such as the one described in Utility Model Registration No. 2528797. What is described in the publication is that a pair of connecting plate pieces are integrally connected with a gap between the cap body side and the lid body,
In addition, a recess is formed in the attachment part of the connecting plate piece,
In the closed posture of the lid, the connecting plate piece is fitted in the recess so that the connecting plate piece does not project onto the outer periphery of the cap.

[0003]

However, in the above structure, the pair of connecting plate pieces, which are hinge members, are arranged with a space therebetween, and in general, the hinge members are formed to be relatively thin. Therefore, there is a problem that the lid body is easily twisted with respect to the vertical direction when the hinge member is viewed from a plane during the opening / closing operation, and thus the hinge member is easily damaged. SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, it is an object of the present invention to prevent the hinge from being broken during the opening and closing operation of the lid, thereby preventing the hinge from being damaged. In addition, a concave surface that can accommodate the connecting pieces on both sides and the central hinge is provided on the cap body side and the lid side,
By specifying the position of the upper surface of the hinge and the length of the hinge, it is an object to provide a hinge structure in which the hinge does not project onto the outer peripheral surface of the cap body when the lid is closed.

[0004]

In order to achieve the above object, the present invention provides a cap body having a spout and an outer peripheral cylindrical wall continuously provided outside the spout, a top plate, and the top plate. And a lid member having a cylindrical wall provided upright at the outer peripheral edge of the cap body, both outer connecting pieces for connecting the cap body and the lid body, and a hinge member having a hinge between them, and the lid is provided via the hinge member. When the body is attached to the cap body, in the hinge structure of the synthetic resin cap, the lower surface of the cylindrical wall of the lid body is grounded to the upper surface of the outer peripheral wall of the cap body,
A first notch step portion is formed over a predetermined width on the rear end edge of the upper surface of the outer peripheral cylindrical wall of the cap body, and the first notch is formed on the rear end edge of the lower surface of the cylindrical wall of the lid body. Second corresponding to the step
The hinge is integrally connected to the outer peripheral edge of the first notch step and the other end is integrally connected to the outer peripheral edge of the second notch step. However, the cut-out step portion has a recessed surface having a width length wider than at least the width of the hinge in the thickness direction, and the upper surface of the outer peripheral cylindrical wall of the cap body and the lower surface of the cylindrical wall of the lid are provided with It is characterized in that it is located above the upper surface.

Further, the height dimension from the upper surface of the first notched step portion of the outer peripheral tubular wall to the recessed surface and the height dimension from the lower surface of the tubular wall to the recessed surface of the second notched step portion are respectively The outer dimension of the hinge is at least ½ or more. Furthermore, the hinge is characterized in that it has a substantially inverted U-shaped cross-section with both side portions serving as connecting portions being thin and the central portion being thick.

According to the present invention having the above-described structure, the connecting piece on both sides and the hinge at the center do not cause a twisting phenomenon during the opening / closing operation of the lid body, and thus the hinge is twisted. Can prevent damage. In addition, a concave surface that can accommodate the connecting pieces on both sides and the central hinge is provided on the cap body side and the lid side,
By specifying the position of the upper surface of the hinge and the length of the hinge, it is possible to provide a hinge structure in which the hinge does not project onto the outer peripheral surface of the cap body when the lid is closed.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to the drawings. 1 to 6 show a hinge structure of a synthetic resin cap according to an embodiment of the present invention. FIG. 1 is a plan view, FIG. 2 is a side view, and FIG. 3 is a sectional view taken along line AA in FIG. FIG. 4A is a sectional view taken along line BB in FIG.
B is an enlarged sectional view of the hinge portion, and FIG. 5 is a sectional view of the lid body in the closed state. FIG. 6 is an enlarged sectional view of a hinge portion.

As shown in FIG. 1, the cap body 1 and the lid body 2 are connected by a hinge member 3 which is integrally connected. As shown in FIGS. 1 and 4, the cap body 1 includes an outer peripheral cylindrical wall 4, a spout 5 continuously provided near the center of the upper surface thereof, and a fitting formed so as to rise around the outer periphery of the spout 5. When the lid 2 is closed, the fitting wall 6 is in close contact with the inner peripheral surface of the lid 2 so that the cap body and the lid are fitted in an appropriate holding state. It is configured. The lid 2 is composed of a top plate 7 and a cylindrical wall 8 standing on the outer peripheral edge of the top plate 7.

As shown in the figure, the hinge member 3 comprises a hinge 9 and outer connecting pieces 10 and 10. When the lid 2 is opened, the hinge 9 has a substantially horizontal upper surface, and the outer connecting piece 10 is provided. , 10 are generally inclined downward and outward. Then, as shown in FIG. 3, a notch 20 is provided between the hinge 9 and the outer connecting pieces 10 and 10 to improve the reversing movement when the lid is opened and closed, and also when the lid is closed, the outer side is opened. Connect the connecting pieces 10 and 10 to the outer peripheral cylindrical wall 4 of the cap body.
It is possible to follow along.

On the other hand, at the rear end edge of the outer peripheral cylinder wall upper surface 11 of the cap body 1, a first notch step portion 12 is formed along the outer periphery with an appropriate width. The first notch step portion 12 has a recessed surface 13 whose center is horizontal and both sides are inclined obliquely downward so as to correspond to the hinge member 3. On the other hand, the lid 2
At the rear end edge of the lower surface of the tubular wall 8, a second notch step portion 14 is formed corresponding to the first notch step portion 12 on the cap body side, and the second notch step portion is It has a similar recessed surface 17.

One end of the hinge member 3 is the outer peripheral edge of the first notch step portion 12, and the other end is the second notch step portion 1.
4 are integrally connected to the outer peripheral edges of the cap body 1 and the cap body 1
And the lid 2 are integrally connected. If a bent groove is provided in each of the connecting portions, the hinge portion smoothly rotates when the lid body 2 is fitted into the cap body.

As shown in FIG. 4, the hinge 9 has a substantially inverted U-shaped cross section with a thick central portion and thin side portions.
One lower end is integrally connected to the cap body 1 side, and the other lower end is integrally connected to the lid side. By making the center portion of the hinge 9 thick, the pulling resistance is sufficient. The upper surface 15 of the hinge 9 is located below the upper surface 11 of the outer peripheral cylindrical wall 4 of the cap body 1 and the lower surface 16 of the cylindrical wall 8 of the lid body 2 when the lid 9 is opened. When the lower side surface 21 of the hinge 9 is viewed in the open state of the lid,
It is located above the respective lower surfaces 13 and 15 of the first and second cutout steps 12 and 13.

Further, as shown in FIGS. 4 to 6, a concave surface 13 from the upper surface 11 of the outer peripheral cylindrical wall 4 to the first cutout step portion 12 is formed.
The height width C from the lower surface 16 of the lid body 2 to the recessed surface 17 of the second notch step portion 14 is the total length L of the inside of the hinge 3 in the open state of the lid body 2, that is, It is not less than half the overall length L of the hinge in the up-down direction when the lid is closed.

The first notch step portion 12 and the second notch step portion 14
The recessed surfaces 13 and 17 of the hinges on both sides 18 and 1 of the hinge 9.
The thickness is made wider than the thickness D of 8 so that when the lid 2 is closed, the hinge 9 is inserted into the notch step portion.

The operation of the hinge structure having the above structure will be described. When the lid body 2 is rotated about the hinge with respect to the cap body 1, the hinge 9 is bent at the connection portion with the cap body side, and further, the central portion of the hinge 9 has the cutout step portion 12 of the outer peripheral cylindrical wall 4. It rises in the vertical direction, then the hinge 9 is bent at the connecting portion on the lid side, and the lower surface 16 of the cylindrical wall of the lid body 2 abuts on the upper surface 11 of the outer peripheral cylindrical wall 4 of the cap body 1 so that the lid body 2 is capped. Fit into the main body 1. In the fitted state, the inner peripheral surface of the cylindrical wall 8 of the lid 2 is in contact with the outer peripheral surface of the fitted wall 6 of the cap body 1 to maintain the fitted state.

In the fitting of the lid body 2, the height C to the recessed surface 13 of the first notch step portion 12 and the height C to the recessed surface 17 of the second notch step portion 14 are the same as the lid body. In the closed state shown in FIG. 5, the hinge 9 is pulled toward the outer peripheral cylinder wall side of the cap body 1 and the hinge 9 in the closed state shown in FIG.
Enter into the first and second notch steps 12, 14.

7 and 9 show another embodiment of the hinge. In the structure shown in FIG. 7, the hinge 9 has a thin central part and both side parts are thickened to increase the breakage resistance of the connecting part of the hinge to the cap body and the lid. Further, the one shown in FIG. 9 is formed in a thin-walled dome shape in cross section so that the lid body can be smoothly rotated. Other structural actions of the embodiment shown in FIGS. 7 and 9 are similar to those of the first embodiment.

The embodiment shown in FIG. 11 is a modification of the hinge portion, in which the hinge 9 is formed to have a substantially inverted L-shaped cross section, and one end portion of the flat surface portion thereof has a notched step portion 12 of the cap body 1. The other end of the vertical portion is integrally connected to the outer peripheral edge of the top plate 7 of the lid body 2. In the hinge 9, the dimension from the lower surface 16 of the tubular wall 8 of the lid body 2 to the connecting portion of the hinge 9, that is, the height dimension E of the tubular wall 8 is the width of the lower surface 22 of the plane portion of the hinge 9. It is set wider than the sum F of the dimension and the width dimension of the lower surface 23 of the vertical portion. Other components and operations than the above are the same as those in the first embodiment. According to this embodiment, the lid can be rotated with a large angle, and therefore can be fitted into the cap body without difficulty.

[0019]

As described above, in the hinge structure of the synthetic resin cap of the present invention, since the hinge member has the hinge and the outer connecting piece, the lid body twists during the opening / closing operation of the lid body. It is possible to prevent the hinge from being damaged. Further, by providing a recessed surface capable of accommodating the hinge member on the cap body side and the lid body side, and by specifying the length of the hinge and the position of the upper surface of the hinge, when the lid body is closed, the hinge body is closed. The present invention has an effect that the outer appearance of the cap does not project and the appearance of the cap main body can be improved, and obstacles when the cap main body is conveyed by a belt conveyor or the like can be avoided.

[Brief description of drawings]

FIG. 1 is a plan view of a hinge structure of a synthetic resin cap according to an embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a sectional view taken along the line AA in FIG.

FIG. 4A is a sectional view taken along line BB in FIG.

FIG. 4B is an enlarged cross-sectional view of a hinge portion.

FIG. 5 is a cross-sectional view showing a state in which a lid is fitted to the cap body.

FIG. 6 is an enlarged sectional view of a hinge portion in FIG.

FIG. 7 is a cross-sectional view showing another example of the hinge shape.

FIG. 8 is a cross-sectional view of a state in which a lid body is fitted to the cap body in the embodiment of FIG.

FIG. 9 is a cross-sectional view showing still another example of the hinge shape.

FIG. 10 is a cross-sectional view showing a state in which a lid body is fitted to the cap body in the embodiment of FIG.

FIG. 11 is a cross-sectional view showing another modification of the hinge structure.

FIG. 12 is a cross-sectional view showing a state in which the lid body is fitted to the cap body in the embodiment of FIG.

[Explanation of symbols]

1 cap body 2 lid 3, hinge member 4 Outer peripheral wall of cap body 5 outlets 6 Mating wall 7 Top plate 8 Cylindrical wall of lid 9 hinges 10 Outer connecting piece 11 Upper surface of outer peripheral wall 12 First notch step 13 Recessed surface of first notch step 14 Second notch step 15 Hinge upper surface 16 Lower surface of tubular wall 17 Recessed surface of second notch step 18 Both sides of hinge 20 Hinge and notch on outer connecting piece 21 Lower side of hinge 22 Bottom surface of hinge flat surface 23 Bottom surface of vertical hinge

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[Procedure amendment]

[Submission date] April 11, 2002 (2002.4.1)
1)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a plan view of a hinge structure of a synthetic resin cap according to an embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a sectional view taken along the line AA in FIG.

FIG. 4A is a sectional view taken along line BB in FIG.

FIG. 4B is an enlarged cross-sectional view of a hinge portion.

FIG. 5 is a cross-sectional view showing a state in which a lid is fitted to the cap body.

FIG. 6 is a cross-sectional view showing another example of the hinge shape.

FIG. 7 is a cross-sectional view showing another example of the hinge shape.

FIG. 8 is a sectional view showing another embodiment of the hinge shape.

[Explanation of symbols] 1 cap body 2 lid 3 Hinge member 4 Outer peripheral wall of cap body 5 outlets 6 mating 7 Top plate 8 Cylindrical wall of lid 9 hinges 10 Outer connecting piece 11 Upper surface of outer peripheral wall 12 First notch step 13 Recessed surface of first notch step 14 Second notch step 15 Hinge upper surface 16 Lower surface of tubular wall 17 Recessed surface of second notch step 18 Both sides of hinge 20 Notch on the outer connecting piece of the hinge 21 Lower side of hinge 22 Bottom surface of hinge flat surface 23 Bottom surface of vertical hinge

Claims (6)

[Claims] 1. A lid body having a cap body having a spout, an outer peripheral cylindrical wall continuously provided outside the spout, a top plate, and a cylindrical wall erected on an outer peripheral edge of the top plate. And both outer connecting pieces for connecting the cap body and the lid body and a hinge member having a hinge between them, and when the lid body is attached to the cap body via the hinge members, In a hinge structure of a synthetic resin cap in which a lower surface of the cylindrical wall is grounded to an upper surface of the outer peripheral cylindrical wall of the cap body, a rear end edge of an upper surface of the outer peripheral cylindrical wall of the cap main body extends over a predetermined width. Forming a first notch step, and forming a second notch step corresponding to the first notch step at the rear end edge of the lower surface of the tubular wall of the lid body, the hinge The end portion is the outer peripheral edge of the first notch step portion, and the other end portion is the outer peripheral edge of the second notch step portion. The first notch step portion and the second notch step portion each have an indented surface having a width length wider than the width of the hinge in the thickness direction, and the upper surface of the outer peripheral cylinder wall of the cap body and the lid. A hinge structure of a synthetic resin cap, characterized in that the lower surface of the tubular wall of the body is positioned above the upper surface of the hinge. 2. The height dimension from the upper surface of the first notched step portion of the outer peripheral tubular wall to the recessed surface and the height dimension from the lower surface of the tubular wall to the recessed surface of the second notched step portion, respectively. The synthetic resin cap having a hinge according to claim 1, wherein an outer dimension of the hinge is at least ½ or more. 3. The synthetic resin according to claim 1 or 2, wherein the hinge has a substantially U-shaped cross section in which both side portions serving as a connection portion are thin and a central portion is thick. Hinge structure of cap made. 4. The synthetic resin according to claim 1 or 2, wherein the hinge has a substantially inverted U-shaped cross section in which both side portions serving as a connecting portion are thick and a central portion is thin. Hinge structure of cap made. 5. The synthetic resin cap hinge structure according to claim 1, wherein the hinge has a thin dome shape. 6. A lid body having a cap body having a spout and an outer peripheral cylindrical wall continuously provided outside the spout, a top plate, and a cylindrical wall erected on an outer peripheral edge of the top plate. And both outer connecting pieces for connecting the cap body and the lid body and a hinge member having a hinge between them, and when the lid body is attached to the cap body via the hinge members, In a hinge structure of a synthetic resin cap in which the lower surface of the cylindrical wall is in contact with the upper surface of the outer peripheral cylindrical wall of the cap body, a notched step portion is formed on the rear end edge of the upper surface of the outer peripheral cylindrical wall of the cap body. The hinge has one end portion integrally connected to an outer peripheral edge of the cutout step portion and the other end portion integrally connected to an outer peripheral edge edge of a top plate of the lid, and the cutout step portion is at least the hinge. The cap body has a recessed surface with a width length wider than the width in the thickness direction, The hinge structure of a synthetic resin cap, wherein the upper surface of the outer peripheral cylindrical wall and the lower surface of the cylindrical wall of the lid are positioned above the upper surface of the hinge.