JP2021116123A - Hinge cap - Google Patents

Abstract

To provide a hinge cap that has simple constitution, can open and close a container mouth part easily, and eliminates the need to finely adjust a rotation-directional position relative to the container mouth part, and is usable even for a container mouth part of a general article.SOLUTION: A hinge cap 100 has a cap body 110, and an upper lid 120 formed on the cap body 110 across hinges 130. The cap body 110 has a skirt wall 111 covering a circumference of the container mouth part C, and a female screw 112. The upper lid 120 is provided with an upper lid top face 121, an upper lid wall part 124, and a mouth part closing plug part 125. A lock piece 126 extending downward from the upper lid wall part 124 and a lock projection part 127 which is provided below the lock piece 126 and can engage a male screw part S of the container opening part C are formed on the opposite side from the place of the upper lid wall part 124 where the hinges 130 are connected.SELECTED DRAWING: Figure 1

Description

The present invention relates to a hinge cap that is fitted to a container mouth portion and is configured so that the container mouth portion can be opened and closed.

Conventionally, hinge caps that are fitted to the container mouth and open / close the container mouth are well known.
For example, in Patent Document 1, a cap body 2 fitted to a container mouth portion (mouth portion 31) and a container mouth portion (container mouth portion 21) integrally formed via a hinge (hinge portion 21) provided on the upper portion of the cap body 2 are integrally formed. A hinge cap (cap 1) having an upper lid (closing body 3) capable of opening and closing the mouth portion 31) is described.

The hinge cap (cap 1) described in Patent Document 1 has a container mouth portion (mouth portion 31) by locking a locking portion 11 provided on the inner surface of the cap body 2 to a bulging step portion 33 of the container 30. ), And the inner seal protrusion 12 provided on the inner surface of the top plate portion 4 of the closing body 3 is inserted into the container mouth portion (mouth portion 31) and brought into contact with the inner surface 31a to bring the container mouth portion (mouth portion) into contact with the container mouth portion (mouth portion 31). The part 31) is sealed.
Further, the closing body 3 is attached to the upper end of the cap body 2 via a cuttable bridge 7, and a closing screw portion 17 that can be engaged with the male screw portion 34 of the tubular portion is formed on the inner surface thereof. ..
The male screw portion 34 is composed of three single screw portions 34a formed by discontinuing portions 38 at predetermined intervals in the circumferential direction of the container mouth portion (mouth portion 31).

The hinge cap (cap 1) described in Patent Document 1 is such that the closing portion 3 is separated from the cap main body 2 along the single screw portion 34a by rotating the hinge cap (cap 1) in the opening direction. It rises and breaks the bridge 7.
Further, when the closing screw portion 17 reaches above the discontinuous portion 38 or the single screw portion 34a, the engagement between the closing screw portion 17 and the male screw portion 34 is released, and then the closing body 3 is centered on the hinge. By lifting the closing body 3 so as to be able to separate the closing body 3 from the container mouth portion (mouth portion 31), the seal of the container mouth portion (mouth portion 31) can be released.

Japanese Unexamined Patent Publication No. 2008-222249

However, the hinge caps known in the above patent documents and the like still have room for improvement.
That is, the hinge cap known in Patent Document 1 and the like needs to carry out two steps, a step of rotating the hinge cap and a step of lifting the hinge so as to be the center of rotation at the time of opening the cap, and the closing screw portion. Since it is difficult to confirm the timing at which the engagement between the screw and the male screw portion is released, there is a risk that the cap cannot be opened properly.
Further, the closing operation also needs to be performed in the reverse process of the opening operation, and there is a risk that the opening / closing operation may take time and effort.

Further, depending on the positional relationship between the hinge cap and the container mouth in the rotation direction, the engagement between the closing screw portion and the male screw portion may be insufficient, or it may be necessary to rotate the closing body in the closing direction. was there.
In addition, since the closing screw part engages with the single screw part formed by placing a discontinuous part in the circumferential direction of the container mouth part, only the container having a special container mouth part dedicated to the hinge cap can be used. It could not be used for the mouth of a container having a threaded portion of the above, and there was a risk that versatility would be poor.

The present invention solves these problems, has a simple configuration, can easily open and close the container mouth, does not require fine adjustment of the position in the rotation direction with the container mouth, and is versatile. It is an object of the present invention to provide a hinge cap that can also be used for the container mouth of a product.

The hinge cap of the present invention is integrally formed with a cap body fitted to a container mouth portion having a male screw formed on the outer peripheral surface via a hinge provided on the upper part of the cap body, and the container mouth portion can be opened and closed. A hinge cap having an upper lid, the cap body has a tubular skirt wall that covers the periphery of the container mouth portion, and a female screw provided on the skirt wall, and the upper lid has an upper lid. A top surface, an upper lid wall portion hanging from the upper lid top surface, and a mouth closing portion hanging from the upper lid top surface inside the upper lid wall portion are provided, and the hinge of the upper lid wall portion is connected. A locking piece extending downward from the upper lid wall portion and a locking convex portion provided below the locking piece and engaging with the male screw of the container mouth portion are formed on the opposite side of the portion. By doing so, the above-mentioned problem is solved.

According to the hinge cap of the invention according to claim 1, a locking piece extending downward from the upper lid wall portion and a male container mouth portion provided below the locking piece are provided on the opposite side of the portion where the hinge is connected. Since a locking convex portion that can be engaged with the screw is formed, the locking piece is elastically deformed and engaged so that the locking convex portion gets over the male screw only in the process of lifting the upper lid with the hinge as the center of rotation. The container mouth can be easily opened by releasing the opening, and the locking protrusion can be easily engaged with the male screw in the reverse procedure of opening to complete the closing operation.
Further, since it is not necessary to provide a discontinuous portion in the middle of the male screw portion for engaging the locking convex portion, it can also be used for the container mouth portion in which the general-purpose male screw portion is formed.
Further, the position where the locking convex portion engages with the male screw portion is not particularly limited as long as the upper lid can sufficiently close the container mouth portion. No need to make fine adjustments.

According to the configuration according to claim 2, the skirt wall is provided with a notch portion in which the skirt wall is opened upward, and the locking piece is configured to extend downward from the upper lid wall portion to the inside of the notch portion. Therefore, when the winding is tightened, the locking piece comes into contact with the skirt wall even if a tightening force is applied to the cap body in the closing direction after the winding is completed, and the upper lid and the cap body rotate relatively. It can be prevented and the hinge etc. can be prevented from being damaged.
According to the configuration according to claim 3, the locking convex portion is formed on the extension of the female screw and can be engaged with the upper part of the male screw of the container mouth portion, so that the conventional screwed container mouth portion can be used. The hinge cap can be attached using a conventional screw cap winding device.
In addition, even with the conventional hinge cap attached to the container mouth with a screw, by switching only the engagement state between the locking protrusion and the upper part of the male screw, the cap body is screw-engaged with the container mouth. Only the upper lid can be opened and closed in the same way as the hinge cap of.

According to the configuration according to claim 4, since the upper lid fixing portion for restricting the movement of the upper lid in the closing direction when the container mouth is opened is provided in the vicinity of the hinge, the opened container is provided. It is possible to prevent the upper lid from moving in the closing direction and closing the container mouth when the contents are taken out by tilting.
According to the configuration according to claim 5, the upper lid fixing portion is formed with a fixing rib extending upward from the upper end portion of the skirt wall and protruding outward in the radial direction from the outer peripheral surface of the upper lid wall portion, and engages with the fixing rib. Since it is composed of possible fixing protrusions, when the container mouth is opened, the upper lid is fixed at a position that does not interfere with the opening of the container mouth by rotating the top lid to the position where the fixing protrusions get over the fixing ribs. This makes it possible to reliably prevent the upper lid from closing the container mouth when the opened container is tilted to take out the contents.

According to the configuration according to claim 6, since the cap body and the upper lid are connected to the skirt wall, the locking piece and the upper lid wall portion by a weakening portion, when the hinge cap is attached to the container mouth portion, it is attached. , The cap body and the upper lid can be handled in an integrated state.
In addition, it can be determined whether or not the hinge cap has been opened based on the presence or absence of breakage of the weakened portion.
According to the configuration according to claim 7, since the upper lid top surface has a wide portion formed wider than the outer peripheral surface of the upper lid wall portion, the container with the hinge cap is held in an inverted state. This can be easily carried out, and even when the container mouth is opened, the upper lid can be easily opened with a light force by holding the wide portion and lifting the upper lid in the opening direction.
Further, since the wide portion has a relief portion cut out above the hinge, the wide portion does not interfere with the container mouth or the cap body when the upper lid is lifted in the opening direction, and the container mouth does not interfere with the container mouth. The top lid can be rotated to a position where the lid is sufficiently opened.

The perspective view from the upper side of the hinge cap 100 which concerns on one Embodiment of this invention. FIG. 5 is a side view of the hinge cap 100 according to the embodiment of the present invention on the locking piece 126 side. The side view of the hinge cap 100 which concerns on one Embodiment of this invention on the hinge 130 side. A side sectional view of a hinge cap 100 according to an embodiment of the present invention. The bottom view of the hinge cap 100 which concerns on one Embodiment of this invention. A side sectional view showing a state at the time of closing when the hinge cap 100 according to the embodiment of the present invention is attached to the container mouth portion C. A side sectional view showing a state at the time of opening when the hinge cap 100 according to the embodiment of the present invention is attached to the container mouth portion C.

Hereinafter, the hinge cap 100 according to the embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 5, the hinge cap 100 has a cap main body 110 and an upper lid 120 integrally formed via a hinge 130 provided on the upper portion of the cap main body 110.

The cap body 110 has a tubular skirt wall 111, a female screw 112 is formed on the inner surface side of the skirt wall 111, and a notch 115 that opens the skirt wall 111 upward is provided. There is.
An over-tightening prevention stopper 113 and a ratchet 114 are provided below the skirt wall 111.

The upper lid 120 has an upper lid top surface 121, an upper lid wall portion 124 hanging from the upper lid top surface 121, and an inner ring-shaped mouth closing portion 125 hanging from the upper lid top surface 121 inside the upper lid wall portion 124. is doing.
In the present embodiment, the upper lid wall portion 124 is flush with the skirt wall 111 in the axial direction.
A wide portion 122 formed wider than the outer peripheral surface of the upper lid wall portion 124 is provided on the outer peripheral surface of the upper lid top surface 121, and the wide portion 122 is cut in the vicinity where the hinge 130 is connected to the upper lid 120. The missing escape portion 123 is provided.

A locking piece 126 extending downward from the upper lid wall portion 124 is provided on the side of the upper lid wall portion 124 opposite to the portion to which the hinge 130 is connected, and the lower portion of the locking piece 126 is within the radial direction of the upper lid 120. A locking convex portion 127 projecting toward the direction is provided.
The side opposite to the location where the hinge 130 of the upper lid wall portion 124 is connected is the range in which the locking piece 126 does not interfere with the skirt wall 111 during the opening / closing plug operation described later, that is, left and right from the center of the hinge 130 when viewed in the circumferential direction. It means that it is located at a distance of 90 ° or more.

The locking piece 126 extends downward from the lower end of the upper lid wall portion 124 and is installed so as to enter the notch portion 115.
In this embodiment, the skirt wall 111 and the locking piece 126 are flush with each other.

The locking protrusion 127 is formed on an extension of the starting end 112a of the female screw 112.
Further, the upper surface of the locking convex portion 127 is the upper surface of the female screw 112 so that it can be screw-engaged with the male screw portion S of the container mouth portion C, which will be described later, and can be engaged with the male screw portion S when resealed. It is formed in the same shape as.

The upper end of the skirt wall 111 and the lower end of the upper lid wall portion 124 are connected by a pair of hinges 130 and a bridge-shaped weakening portion 131, and the upper end of the portion where the notch portion 115 of the skirt wall 111 exists and the locking piece 126. Is connected to the lower end of the skirt by a bridge-shaped locking one-side weakening portion 132.
Further, between the pair of hinges 130, a fixing rib 134 extending upward from the upper end portion of the skirt wall 111 and a fixing protrusion 135 formed so as to protrude outward in the radial direction from the outer peripheral surface of the upper lid wall portion 124 are provided. , The fixing rib 134 and the fixing protrusion 135 are configured to function as the upper lid fixing portion 133, which will be described in detail later.

Next, the procedure for attaching the hinge cap 100 according to the embodiment of the present invention to the container opening C and the opening / closing plug procedure for the container opening C with the hinge cap 100 attached to the container opening C. , 5 to 7 will be described.
The container mouth portion C has a tubular portion T communicating with the container side at the upper portion of the flange F, and a male screw portion S and an expansion formed below the male screw portion S on the outer peripheral surface of the tubular portion T. A diameter portion B is provided.
Further, a rotation locking portion D is provided on the outer peripheral surface of the enlarged diameter portion B.

To attach the hinge cap 100 to the container mouth C, the tubular portion T is covered with the cap body 110, and then the hinge cap 100 is rotated so that the female screw 112 and the male screw portion S are screw-engaged.
The hinge cap 100 gradually descends toward the flange F side as the female screw 112 and the male screw portion S engage with each other, and the mouth closing portion 125 penetrates into the tubular portion T to meet the inner peripheral surface of the tubular portion T. After fitting, the attachment of the hinge cap 100 to the container mouth C is completed.

At this time, even if the hinge cap 100 is further rotated to be lowered toward the flange F side, if the over-tightening prevention stopper 113 comes into contact with the upper end of the enlarged diameter portion B, the hinge cap 100 cannot be lowered any further and the mounting direction. Cannot rotate to.
As a result, it is possible to prevent the hinge cap 100 from being excessively lowered with respect to the container mouth portion C.
Further, the locking piece 126 that enters the notch 115 of the skirt wall 111 brings the locking piece 126 into contact with the side surface of the notch 115 even if a tightening force is further applied to the cap body 110 in the closing direction after the winding is completed. Therefore, it is possible to prevent the upper lid 120 and the cap body 110 from rotating relatively, and to prevent the weakening portion 131, the locking one-side weakening portion 132, and the hinge 130 from being damaged.

Further, when the attachment of the hinge cap 100 and the container mouth portion C is completed, the engagement between the ratchet 114 and the rotation locking portion D is also completed.
As a result, even if an attempt is made to rotate the hinge cap 100 and the container mouth portion C in a direction in which the attachment is released, the ratchet 114 and the rotation locking portion D restrict each other's rotation only in the attachment direction, so that the hinge cap 100 Does not come off from the container mouth C.
Since the locking convex portion 127 is formed on the extension of the female screw 112, when the hinge cap 100 is attached to the container mouth portion C, the locking convex portion 127 also becomes the male screw portion S following the female screw 112. Can be engaged.

Next, the opening / closing plug of the container mouth C after the hinge cap 100 according to the embodiment of the present invention has been attached to the container mouth C will be described.
First, when a finger or the like is hooked on the wide portion 122 of the upper lid top surface 121 on the locking piece 126 side and the upper lid 120 is lifted upward in the opening direction of the container mouth portion C, the upper lid 120 is centered on the hinge 130. Attempts to separate from the container mouth C so as to rotate.
At this time, the weakening portion 131 and the locking one-side weakening portion 132 gradually start to break, and the locking convex portion 127 that has been engaged with the male screw portion S gets over the male screw portion S and becomes a male screw portion S. It disengages and enables rotation around the hinge 130.

When the upper lid 120 advances the rotation, the mouth closing portion 125 also separates from the inner peripheral surface of the cylinder portion T, and the container mouth portion C is opened.
When the upper lid 120 is further rotated, the relief portion 123 causes the upper lid 120 to rotate without interfering with the cap body 110, the fixing protrusion 135 of the upper lid 120 comes into contact with the fixing rib 134 of the cap body 110, and the upper lid 120 remains as it is. As the rotation continues, the fixing protrusion 135 gets over the fixing rib 134.
As a result, even if the upper lid 120 tries to move freely in the closing direction due to vibration, tilt, restoring force of the hinge 130, etc. after opening the container mouth portion C, the fixing protrusion 135 overcoming the fixing rib 134 becomes the fixing rib 134. Since it interferes and functions as the upper lid fixing portion 133, the upper lid 120 can maintain the opened state as shown in FIG. 7, and when the contents are taken out from the container opening portion C, the upper lid 120 suddenly closes the container opening portion C. There is no such thing as a mess.

When the container mouth portion C is closed again, the upper lid 120 is rotated in the closing direction by hooking the wide portion 122 with a finger, so that the fixing protrusion 135 overcomes the fixing rib 134 again and functions as the upper lid fixing portion 133. It is released, the mouth closing portion 125 is inserted into the cylinder portion T, and the locking convex portion 127 is engaged with the male screw portion S to complete the closing of the container mouth portion C.
That is, the hinge cap 100 according to the embodiment of the present invention can open and close the container mouth C only by rotating the upper lid 120 around the hinge 130 as the center of rotation.

The locking convex portion 127 is formed on an extension of the start end 112a of the female screw 112, and in order to engage with the male screw portion S that is screw-engaged with the female screw 112, the hinge cap 100 is attached to the container mouth portion C. Even if the direction of rotation of the hinge cap 100 and the container mouth C is slightly deviated within the range of the distance between the ratchet 114 and the rotation locking portion D when the upper lid 120 is attached or opened / closed. The positional relationship in the height direction between the stop convex portion 127 and the male screw portion S where the locking convex portion 127 engages does not change, and the locking convex portion 127 can easily get over the male screw portion S. There is no risk that the locking convex portion 127 and the male screw portion S will be tightly engaged and deformed.

Further, since the locking convex portion 127 is located below the rotation center of the upper lid 120 by the hinge 130, the locking convex portion 127 is formed by the cylinder portion T due to the rotation of the upper lid 120 when the container mouth portion C is opened. Since the engagement with the male screw portion S is released while moving outward in the radial direction of, the male screw portion is not deformed due to an excessive load applied to the locking convex portion 127 and the male screw portion S. The locking convex portion 127 that has been disengaged from S does not come into contact with the tubular portion T again during the rotation of the upper lid 120.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the claims. It is possible.

In the above-described embodiment, the cap body and the upper lid are described as being connected by a bridge-shaped weakening portion and a locking one-side weakening portion, but the connection relationship between the cap body and the upper lid is not limited to this. For example, the weakening portion and the locking one-side weakening portion may not be provided, and the weakening portion and the locking one-side weakening portion may be connected by a thin-walled portion instead of the weakening portion and the locking one-side weakening portion.
Further, in the above-described embodiment, it has been described that the upper lid fixing portion composed of the fixing ribs formed on the cap body and the fixing protrusions formed on the upper lid is provided, but the configuration of the upper lid fixing portion is Not limited to this, for example, it is not necessary to provide the upper lid fixing portion, a fixing concave portion is formed on the cap body side, and a fixed convex portion that can be inserted into the fixing concave portion is formed on the upper lid to function as the upper lid fixing portion. May be good.

Further, in the above-described embodiment, the cap body and the upper lid are described as being connected by a pair of hinges, but the connection relationship between the cap body and the upper lid is not limited to this, and for example, the cap is capped by one hinge. The main body and the upper lid may be connected, or three or more hinges may be provided.
Further, in the above-described embodiment, the cap body is attached to the container mouth portion by screw-engaging the female screw with the male screw portion formed in the container mouth portion, but the cap body to the container mouth portion is described. The mounting method is not limited to this, and for example, the cap body may be press-fitted into the container mouth portion, and a fixing claw that is hooked on the enlarged diameter portion of the container mouth portion or the flange is provided at the lower end of the cap body to lock the cap body. You may let me.

Further, in the above-described embodiment, the locking convex portion is formed on the extension of the starting end of the female screw, and the female screw and the locking convex portion are configured to engage with the same male screw portion. However, the method of engaging the female screw and the locking convex portion with the container mouth portion is not limited to this, and for example, the portion where the female screw engages and the portion where the locking convex portion engages are different. It may be a male threaded portion, a locking convex portion may be formed in the middle of continuous female threads, and there may be no locking convex portion on the extension of the female thread.
Further, in the above-described embodiment, a wide portion formed wider than the outer peripheral surface of the upper lid wall portion is provided on the outer peripheral surface of the upper lid top surface, and the wide portion is provided in the vicinity where the hinge is connected to the upper lid. Although it has been described that the relief portion is provided by cutting out the above, the configuration of the wide portion and the relief portion is not limited to this, and for example, the wide portion may be formed only in the vicinity of the locking piece. The wide portion may not be provided, and a relief portion may be formed in a region other than the vicinity where the hinge is connected to the upper lid.

Further, in the above-described embodiment, the mouth closing portion has been described as being formed in an inner ring shape that fits with the inner peripheral surface of the cylinder portion, but the configuration of the mouth closing portion is not limited to this. For example, the mouth closing portion may be formed in an outer ring shape that fits with the outer peripheral surface of the cylinder portion, or the mouth closing portion may be configured to be in close contact with the upper end of the cylinder portion.
Further, in the above-described embodiment, the rotation locking portion of the container mouth is engaged with the ratchet of the cap body so that the hinge cap after being attached to the container mouth does not rotate in the opening direction. However, the configuration of the cap body and the container mouth portion is not limited to this, and for example, the ratchet and the rotation locking portion may not be provided.

Further, in the above-described embodiment, the hinge cap is prevented from being excessively lowered toward the container mouth portion by contacting the overtightening prevention stopper of the cap body with the upper surface of the rotation locking portion of the container mouth portion. However, the configuration of the cap body and the container mouth portion is not limited to this, and for example, the over-tightening prevention stopper and the rotation locking portion may not be provided.

100 ・ ・ ・ Hinge cap 110 ・ ・ ・ Cap body 111 ・ ・ ・ Skirt wall 112 ・ ・ ・ Female screw 112a ・ ・ ・ Starting end of female screw 113 ・ ・ ・ Stop over-tightening stopper 114 ・ ・ ・ Ratchet 115 ・ ・ ・Notch 120 ・ ・ ・ Top lid 121 ・ ・ ・ Top lid top surface 122 ・ ・ ・ Wide part 123 ・ ・ ・ Relief part 124 ・ ・ ・ Top lid wall part 125 ・ ・ ・ Mouth closure part 126 ・ ・ ・ Locking piece 127・ ・ ・ Locking convex part 130 ・ ・ ・ Hinge 131 ・ ・ ・ Weakening part 132 ・ ・ ・ Locking one side weakening part 133 ・ ・ ・ Top lid fixing part 134 ・ ・ ・ Fixed rib 135 ・ ・ ・ Fixed protrusion B ・ ・ ・Enlarged diameter part C ・ ・ ・ Container mouth part D ・ ・ ・ Rotation locking part F ・ ・ ・ Flange S ・ ・ ・ Male screw part T ・ ・ ・ Cylinder part

Claims (7)

A hinge cap having a cap body fitted to a container mouth portion having a male screw formed on an outer peripheral surface and an upper lid integrally formed via a hinge provided on the upper portion of the cap body and capable of opening and closing the container mouth portion. And
The cap body has a tubular skirt wall that covers the periphery of the container mouth portion, and a female screw that is provided on the inner surface of the skirt wall and can be engaged with the male screw of the container mouth portion.
The upper lid includes an upper lid top surface, an upper lid wall portion hanging from the upper lid top surface, and a mouth closing portion hanging from the upper lid top surface inside the upper lid wall portion.
On the side opposite to the place where the hinge is connected, a locking piece extending downward from the upper lid wall portion and a locking convex provided below the locking piece and capable of engaging with a male screw of the container mouth portion. A hinge cap characterized in that a portion is formed. The skirt wall is provided with a notch that opens the skirt wall upward.
The hinge cap according to claim 1, wherein the locking piece is configured to extend downward from the upper lid wall portion to the inside of the notch portion. The hinge cap according to claim 1 or 2, wherein the locking convex portion is formed on an extension of the female screw and can be engaged with an upper portion of a male screw of a container mouth portion. One of claims 1 to 3, wherein an upper lid fixing portion for restricting the movement of the upper lid in the closing direction when the container mouth portion is opened is provided in the vicinity of the hinge. Hinge cap described in. The upper lid fixing portion is composed of a fixing rib extending upward from the upper end portion of the skirt wall and a fixing protrusion formed so as to project outward in the radial direction from the outer peripheral surface of the upper lid and engage with the fixing rib. The hinge cap according to claim 4, wherein the hinge cap is provided. The hinge according to any one of claims 1 to 5, wherein the cap body and the upper lid are connected to the skirt wall, the locking piece, and the upper lid wall portion by a weakening portion. cap. One of claims 1 to 6, wherein the upper lid has a wide portion formed wider than the outer peripheral surface of the skirt wall, and has a relief portion cut out above the hinge. Hinge cap described in.

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