JP3041257B2 - Tobacco hinge lid pack with lid unlocking mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge-lid type pack having a lid unlocking mechanism suitable for cigarette packaging.

[0002]

2. Related Background Art A hinge-lid type pack for a cigarette of this type is disclosed, for example, in Japanese Patent Application Laid-Open No. 2-296641. This known pack has a shoulder on the front face of the pack body along the opening edge thereof, and a flap on the front opening edge of the lid, and the flap is pivotally folded into the lid. .

According to such a pack, when the lid is put on the opening end of the pack main body, when the pack main body is closed, the lid flap is further folded so as to ride over the shoulder of the pack main body. It can be locked to the lower edge of the shoulder. Therefore, even if the lid is to be opened with a relatively small force thereafter, the lid flap is locked to the shoulder of the pack body, and the lid is not opened carelessly.

[0004]

However, in the above-mentioned known pack, when the lid is to be opened,
Since the tip of the flap remains locked to the lower edge of the shoulder, the lid must be opened while the flap is largely folded back. For this reason, in situations where the lid cannot be opened properly and the lock between the flap and the shoulder is not completely released, opening the lid will damage the flap and the shoulder, and locking the lid thereafter There is a possibility that it will not be possible to obtain a sufficient amount.

Further, if the flap is largely folded back when the lid is opened, the elasticity of the base of the flap is suddenly reduced only by repeating opening and closing of the lid several times. Therefore, when the lid is opened, the flaps may remain folded back and extend outside the lid, in which case it is necessary to fold the flaps into the lid one by one before closing the lid There is.

The present invention has been made in view of the above circumstances, and aims to prevent the lid from being opened carelessly and to easily open the lid when desired. It is another object of the present invention to provide a hinge-lid type pack capable of reliably maintaining the locking structure of the lid for a long period even when the lid is repeatedly opened and closed.

[0007]

In order to achieve the above object, a hinge-lid type pack according to the first aspect of the present invention comprises a pack body having an open end, and a self-hinge provided at a rear opening edge of the pack body. A box-shaped lid that is rotatably connected and covers the opening end of the pack main body and closes the pack main body, and is provided on the front surface of the pack main body. A lap area where the front opening edge overlaps each other, and this lap area
A tongue protruding from the front wall of the pack body,
When the lid includes an engagement piece provided on the front opening edge of the lid and the lid is in a closed state, the engagement piece is adjacent to the tip of the tongue piece , i.e., contact touch or is slightly away from the tip, when the lid is rotated slightly open direction from the closed state, the lid sandwiched in between the inner surface of the engaging piece and the lid of the tip of the tongue The engagement part to be engaged with the pack body and the front wall of the lid covering the wrap area partially
In order to prevent the tongue from being caught by the engaging portion when the lid is pivoted from the closed state to the slightly opened direction with the pushing, the lid is provided so as to be able to be pushed inward.
A release portion for closing an entrance between the engagement piece and the inner surface of the lid .

According to hinged lid type pack unlocking mechanism with cigarette of claim 1 lid, when about to be slightly opened from a state in which the lid is closed, the lid is between the inner surface and the engaging piece In this state, the tongues are inserted into the end of the tongue, and the tongues and the engaging pieces are engaged with each other to lock the lid to the pack body, thereby preventing the lid from being opened carelessly.

If the release portion is pushed in with the lid closed, the tongue is not pinched even if the lid is rotated in the opening direction, so that the lid is easily opened without engaging with the pack body. Become like Therefore, there is no need to largely fold back the tongue piece and the engagement piece when opening the lid. Claim 2
The opening edge of the lid in the hinge lid type pack of
An inner front flap connected to the lid and folded inward to form a front opening edge of the lid is formed, and the release portion in the hinge lid type pack according to claim 2 is formed on the front surface of the lid. Are formed at the central portion of the inner front flap, and are formed at the central portion of the inner front flap, and are formed so that the front end is directed toward the front opening edge of the lid. And a release piece sectioned into a convex inner cutting line that simultaneously forms a combined piece.

According to the hinge lid type pack of the cigarette of the second aspect, the engaging piece is formed between the inner cutting line and the center of the leading edge of the lid at the inner front flap inside the lid. At this time, the engaging piece is in a state of being separated from the inner surface of the lid, while the releasing piece is in close contact with the inner surface of the lid, and the inner front flap has a step between the engaging piece and the releasing piece. Has occurred. Therefore, when the lid is pivoted in a slightly open direction from the closed state, the tip of the tongue can be relatively inserted between the engagement piece and the inner surface of the lid through the inner cut line, Thereby, the tip of the tongue piece is sandwiched between the engagement piece and the inner surface of the lid.

When the lid is completely closed, the release piece of the inner front flap looks like it covers the tongue when viewed from the front of the pack. On the other hand, on the front face of the lid, the pushing piece becomes a part that can be directly pushed in, and when the pushing piece is pushed in with the lid closed, the release piece of the inner front flap warps into the pack by pushing. At this time, the above-mentioned step is eliminated on the inner surface of the lid. Therefore, even when the lid is rotated from the closed state with such pushing, the tongue piece is not inserted between the engagement piece and the inner surface of the lid, so that the tongue piece is prevented from being pinched.

According to the third aspect of the present invention, there is provided a hinge lid type pack which is provided with the same pushing piece as in the second aspect.
Inner and cut-out opening in the central portion in the front flap is provided, the cutout opening is formed by leaving a predetermined gap between the front opening edge of the lid, the remaining portion is engaging piece . The cutout is tapered from one side of the engagement to the tip of the inner front flap. In this cutout, the tip of the tongue piece is engaged with the engagement piece and the lid inner surface.
The tip is inserted toward the inner surface side of the lid in a state of being sandwiched between the lid.

[0013] In the case of the hinge lid type pack of claim 3,
The locking edge of the engagement piece is formed from the opening edge of the cutout. Also, unlike the second aspect, since there is no release piece, the tip of the tongue is inserted into the gap between the engagement piece and the inner surface of the lid. In this case, when the pushing piece is pushed in, the leading edge of the pushing piece and the locking edge of the engaging piece coincide with each other, and there is no gap between the engaging piece and the inner surface of the lid. The lid is easily opened without being caught between the engagement piece and the inner surface of the lid.

The cutout of the hinge lid type pack according to the fourth aspect is polygonal. In this case, the locking edge of the engagement piece is formed from a polygonal side in the cutout.
According to the hinge lid type packs of claims 1, 2, 3 and 4, when the lid is further opened in a state where the tongue piece and the engagement piece remain engaged, these engagement piece and tongue piece When the engagement is released, the tongue is flipped to generate a clicking sound. When the lid is closed thereafter, the engagement piece of the lid passes over the tongue piece while leaning down the tongue piece of the pack body. When disengaged, the rebound causes the tongue to strike the inner surface of the lid, generating a clicking sound.

[0015]

DETAILED DESCRIPTION OF THE INVENTION Referring to FIG. 1, a hinged lid pack for a filter cigarette is shown. This pack consists of a pack body 2 and a box-shaped lid 4,
It has a size that can accommodate the filter cigarettes of the book. The pack body 2 is composed of a box-shaped outer frame 6 and an U-shaped inner frame 8 whose upper ends are open, and the upper end of the outer frame 6 is cut off obliquely toward its front side. The inner frame 8 is partially inserted into and attached to the upper end of the outer frame 6, and forms an extended portion extending from the front opening edge of the outer frame 6 and the left and right opening edges.

The inner frame 8 exposed from the outer frame 6 is provided with a substantially rectangular notch 10 on the front surface thereof, as is apparent from FIG. It is formed from the edge toward the front opening edge of the outer frame 6. Notch recess 1
Numeral 0 widens the front portion of the inner frame 8 to facilitate removal of the filter cigarette from the pack body 2.

On the other hand, the lid 4 is integrally connected to the rear opening edge of the outer frame 6 via a self-hinge 14, and is rotated around the self-hinge 14 so that the opening end of the pack body 2, The pack body 2 can be closed by covering the exposed portion of the inner frame 8 from the outer frame 6. Therefore, the lower end of the lid 4 is also cut obliquely so as to coincide with the opening end of the outer frame 6.

The front portion of the inner frame 8 is a wrap region where the front portion of the lid 4 overlaps when the lid 4 is closed. A tongue piece 12 cut and raised from the inner frame 8 toward the upper end opening of the pack body 2 is formed in the wrap area. The outer frame 6 and the lid 4 as described above can be formed from a single blank, the blank 16 of which is shown in FIG. The blank 16 has a front area 18 and a rear area 20 that are the front and rear faces of the outer frame 6,
These areas 18 and 20 are connected to each other via a bottom area 22 which is the bottom of the outer frame 6. On both sides of the front area 18 and the rear area 20, a side area 24 and an inner side flap 26, which are left and right sides of the outer frame 6, are connected, respectively, and between the corresponding side area 24 and the inner side flap 26. Are provided with inner bottom flaps 28 which are superimposed on the bottom area 22 respectively.
8 is connected to the inner side flap 26.

The rear area 20 is connected to a rear area 30 which is located on the opposite side of the bottom area 22 and serves as a rear surface of the lid 4. A hinge line 32 serving as a self-hinge 14 is provided between the rear areas 20 and 30. Connected to each other. The rear section 30 is connected to a top section 34 and a front section 36 which are the top and front faces of the lid 4 in sequence. On both sides of the front section 36, side sections 38 serving as left and right side faces of the lid 4 are connected, and on both sides of the rear section 30, inner side flaps 40 for the side sections 38 are connected. And between the side area 38 and the corresponding inner side flap 40,
The inner top flaps 42 for the top section 34 are respectively arranged, and these inner top flaps 42
Are connected to the corresponding inner side flaps 40.

The front area 36 is connected to an inner front flap 44 located on the opposite side of the top area 34 from the front area 36. A cut line is provided in each of the front area 36 and the inner front flap 44, and a semicircular outer cut line C1 protruding toward the inner front flap 44 is provided at a central portion of the front area 36. Also, inner front flap 4
4 is provided with a U-shaped inner cutting line C2 which is convex toward the front area 36. A predetermined distance L1 is provided between the arc vertex of the outer cut line C1 and the front opening edge of the lid 4, and a predetermined distance L1 is provided between the top of the inner cut line C2 and the front area 36. Are respectively secured. Note that these predetermined intervals L
1, L2 is set to be larger at the interval L1 than at the interval L2.

That is, the portion surrounded by the outer cut line C1 in the front area 36 constitutes a pushing piece 45 which can be pushed from the front of the lid as shown in FIG.
Further, a portion 46 of the inner front flap 44 which is surrounded by the inner cut line C2 constitutes a release piece 46 which is simultaneously pushed by the pushing piece 45 being pushed. The portion of the inner front flap 44 between the top side of the inner cut line C2 and the front area 36 constitutes an engagement piece 48 cooperating with the tongue piece 12 of the inner frame 8 described above.

FIG. 2 also shows a blank 50 constituting the inner frame 8, which is shown superimposed and glued on the front area 18 of the blank 16. The blank 50 has side flaps 52 on both sides thereof, which constitute extensions of the side area 24. As is apparent from FIG. 2, the tongue piece 12 of the blank 50 and the engagement piece 48 of the inner front flap 44 are located on the same line. The maximum width W3 of the tongue piece 12 is, for example, 16 mm, and the width W2 of the engagement piece portion 48 (the length of the top of the inner cut line C2) is, for example, 2 mm.
0 mm, and the length L3 of the tongue piece 12 and the length L2 of the engagement piece portion 48 (the distance between the top side of the inner cutting line C2 and the front area 36) are the same (for example, 3mm)
Is set to The width W2 of the engagement piece 48 is also the width of the release piece 46 as it is. On the other hand, the pushing piece 45
Is the distance between both ends of the outer cutting line C1, and the width W1 is smaller than the width W2 of the release piece 46 (for example, 1).
6mm) is set. The distance L4 from the upper edge of the front area 18 serving as the opening edge of the outer frame 6 to the tip of the tongue piece 12 is set longer than the length L2 of the engagement piece portion 48.

[0023] In this embodiment, the blank 16, 50 is made of paper material, their balance amount 180~270g / m ^2,
Their thickness is between 0.2 and 0.5 mm. Specifically, the blanks 16 and 50 are card paper, Manila cardboard,
Any of aluminum deposited paper and the like may be used. The above-mentioned blanks 16 and 50 are respectively folded from folding lines indicated by double lines in FIG. 2 to form the pack body 2 and the lid 4, respectively. By this folding molding, the lid 4 is closed as shown in FIG. A pack is obtained in the closed state.

When the pack is folded and formed, the tongue piece 12 of the inner frame 8 is bent in the direction opposite to the other folding lines, and the tongue piece 12 is separated from the inner frame 8 as shown in FIG. It is formed into a cut and raised state. The side area 24 on the side of the pack body 2 and the corresponding inner side flap 26 are glued together with the side flap 52 of the inner frame 8 interposed therebetween, and the side area 38 on the side of the lid 4 and the corresponding inner side flap. The side flaps 40 are also glued together. Further, on the lid 4 side, the inner front flap 4
4 is folded and glued toward the inner surface of the front area 36.

Here, the inner front flap 44 is
In FIG. 2, it is preferable that the gluing is performed at the position of the circle P indicated by the two-dot chain line, but this gluing position is not essential.
The gluing position of the inner front flap 44 is not limited. However, the engagement piece 48 is not glued to the front area 36, and the inner frame 8 does not adhere to the inner surface of the lid 4.
The tongue piece 12 cut and raised from can be sandwiched. That is, the tip of the tongue piece 12 is inserted between the inner surface of the lid 4 and the engagement piece 48 through the top of the inner cut line C2, and the tongue 12 and the engagement piece 48 are engaged. Can be combined.

Further, as described above, since the distance L1 between the folding line of the inner front flap 44 and the tip of the pushing piece 45 is longer than the length L2 of the engaging piece 48, the inner front flap 44 is folded. When glued
The pushing piece 45 and the engaging piece 48 do not overlap each other. On the other hand, the maximum width W1 of the pushing piece 45 is the releasing piece 4
6 is wider than the maximum width (width W2 in FIG. 2), so that the pushing piece 45 does not overlap the inner front flap 44 outside the area of the release piece 46. Therefore, after the inner front flap 44 is folded and glued, as shown in FIG. 1, the pushing piece 45 overlaps only in the area of the release piece 46, so that the pushing piece 45 is pushed in from the front side of the lid 4. When the inner front flap 44 is released,
Only 6 will be successfully pushed into the pack.

The formation of the pack body 2 and the lid 4 from the blanks 16 and 50 is performed simultaneously with the filling of the 20 filter cigarettes to be packed, and when the formation is completed, as shown in FIG. The lid 4 is put on the open end of the pack body 2 so that the pack body 2 is closed. At this time, the opening edge of the outer frame 6 in the pack body 2 and the front opening edge of the lid 4 are aligned with each other.

As is apparent from FIG. 3, the fold line of the inner front flap 44 forms an opening edge on the front side of the lid 4, and the inner front flap 44
Is folded inside the lid 4 to reinforce the front opening edge of the lid 4 in a double structure. When the lid 4 is in a completely closed state, as described above, the engagement piece 48
The length L2 of the tongue piece 12 from the opening edge of the outer frame 6
Is smaller than the distance L4 to the tip of the inner frame 8, the engaging piece 48 is in contact with or slightly away from the tip of the tongue piece 12 of the inner frame 8, and as shown in FIG. Has its tip in contact with the release piece 46.
In the example shown in the figure, the engagement piece 48 is separated from the tip of the tongue piece 12.

As described above, the engaging piece 48 is not glued to the inner surface of the lid 4 and is in a state of being separated from the inner surface. On the other hand, as a preferred example, the release piece portion 46 is glued to the inner surface of the lid 4 and is in a state of being in close contact with the inner surface. Accordingly, a step is formed between the engagement piece 48 and the release piece 46 on the inner surface of the lid 4 as shown in FIG. Note that, even if the inner front flap 44 is not glued to the front area 36 particularly at the above-described position, it goes without saying that the release piece 46 is in close contact with the inner surface of the lid 4.

When the lid 4 is slightly opened from the state in which the lid 4 is completely closed in accordance with the rotation about the self-hinge 14, the tongue piece 12 returns to the original state by the elastic force of the base. Since the lid 4 is to return to the cut-and-raised posture, the tip of the tongue piece 12 remains in contact with the release piece portion 46 during the slight rotation of the lid 4. On the other hand, the engagement piece portion 48 also tends to be further separated from the inner surface of the lid 4 by the folding back. As a result, the step between the release piece 46 and the engagement piece 48 is further increased.
, The tongue piece 12 is inserted relatively through the top of the inner cut line C2, that is, between the engagement piece portion 48 and the inner surface of the lid 4 from between these steps. It is. Therefore, the tip of the tongue piece 12 is sandwiched between the inner surface of the lid 4 and the engaging portion 48, and the lid 4 is locked to the pack body 2.

In such a state, the lid 4 is completely locked to the pack body 2 due to the engagement between the tongue piece 12 and the engagement piece portion 48, and the lid 4 is further rotated and not locked. It will not be easily opened. On the other hand, when the smoker opens the lid 4 while unlocking the lid 4, that is, rotating the lid 4 while preventing the tongue piece 12 from being pinched, the lid 4 is kept as it is.
Can be easily opened. Hereinafter, the opening of the lid 4 accompanied with the release of the lock will be described.

As shown in FIG. 5, when a pushing force F (arrow in the drawing) is applied to the pushing piece 45 from the front side of the lid 4 with the lid 4 closed, the pushing piece 45 is released together with the pushing piece 45. The piece 46 is also pushed into the pack. At this time, since the release piece 46 is depressed and warped toward the inside of the pack, at this time, the step between the engagement piece 48 and the release piece 46 described above is eliminated. In addition, the tongue piece 12 is pressed via the release piece portion 46, and is brought back from the cut and raised position.

When the lid 4 is slightly rotated in the opening direction with the pushing of the pushing piece portion 45, the inner surface of the lid 4 is separated from the front surface of the inner frame 6 so that the tongue piece 12 has an elastic force. As a result, the step between the engagement piece 48 and the release piece 46 is still eliminated as described above even if the tongue 1
The tip of the second 2 is not inserted between the engagement piece 48 and the inner surface of the lid 4. Thereafter, the engaging piece 48 and the tongue 12
When the lid 4 is rotated to a position where the lids overlap each other,
As shown in FIG. 6, even if the pushing piece 45 is no longer pushed, the engaging piece 48 and the tongue piece 12 are engaged and the lid 4
Is not locked, so that the lid 4 can be easily opened as it is.

When the lid 4 is closed by being turned in the opposite direction from the fully opened state, the engaging piece 48 of the lid 4 engages with the tongue piece 12 of the pack body 2 as shown in FIG.
The engaging piece 48 is pressed against the inner surface of the lid 4 as the tongue piece 12 moves over the tongue piece 12 while being tilted. When the engaging piece 48 completely passes over the tongue piece 12, the engaging piece 48 and the tongue piece 12 are in the state shown in FIG. 3, and the lid 4 is completely closed.

In the pack of this embodiment, the lid 4 can be opened without performing the above-described procedure. That is,
Even if the lid 4 is further rotated from the state shown in FIG. 4 without the above-described pushing, the engagement between the tongue piece 12 and the engagement piece portion 48 can be released. In this case, the tongue piece 12
Is in a state of being inserted between the inner surface of the lid 4 and the engagement piece 48, the engagement piece 48 bends the tongue 12 by turning the lid 4. Thereafter, when the lid 4 is further rotated and the engaging piece 48 gets over the tongue 12, the engagement between the tongue 12 and the engaging piece 48 is released as shown in FIG.

In the pack of this embodiment, when the engagement piece 48 and the tongue piece 12 are disengaged as described above, the tongue piece 12 is folded back as shown by the arrow in FIG. Is clicked, and a click sound indicating that the lid 4 is opened can be generated. Also, when the lid 4 is completely closed from the state shown in FIG. 7, the tongue piece 12 rebounds and strikes the inner surface of the lid 4, that is, the release piece 46, and at this time, a click sound indicating the lid 4 is closed. Can be generated.

According to the pack of the above-described embodiment, when the lid 4 is rotated from the closed state to the slightly opened direction,
Since the lid 4 is locked by the engagement between the tongue piece 12 and the engagement piece portion 48, the lid 4 is not accidentally opened. On the other hand, when desired, the lid 4 can be easily locked by simply opening the lid 4 while pushing the pushing piece 45 from the front side of the lid 4.
Accordingly, when the lid 4 is opened, the tongue piece 12 and the engagement piece 48 are not significantly deformed, so that damage to these parts can be prevented.

When the lid 4 is further rotated and opened from the locked state, a click sound indicating the engagement between the engagement piece 48 and the tongue piece 12, ie, the completion of the unlocking of the lid 4, is generated. As a result, the clicker can surely know that the lock has been released. The push piece 45 and the release piece 46 for unlocking as described above are formed by simply providing the outer cut line C1 or the inner cut line C2 in the front area 36 and the inner front flap 44 of the lid 4, respectively. Lid 4
Can be simplified. In addition, since the inner front flap 44 is provided with the inner cut line C2, not only the release piece 46 but also the engagement piece 48 can be formed, so that the mechanical processing of each of these parts is further facilitated. can do.

Further, since the tongue piece 12 and the engagement piece 48 are provided near the front opening edges of the pack body 2 and the lid 4, respectively, when the lid 4 is opened, the engagement piece 48 becomes The base of the tongue piece 12 can maintain its elasticity for a long time without causing the tongue piece 12 to be greatly bent. As a result, even if the lid 4 is repeatedly opened and closed frequently, when the lid 4 is closed, the tongue piece 12 can be reliably engaged with the engagement piece portion 48.

Since the tongue piece 12 is provided integrally with the inner frame 8, the structure of the pack body 2 does not become complicated. In addition, since the tongue piece 12 is formed by cutting and raising the inner frame 8, mechanical processing of the tongue piece 12 is easier than, for example, the tongue piece glued to the front surface of the inner frame 8. The inner front flap 44 of the lid 4 is glued at a release piece 46, and the width of the release piece 46, that is, the top side length W2 of the inner cut line C2 is determined by the engagement piece. Since it is sufficiently wider than the length L2 of the 48, the peeling of the engagement piece 48 does not expand more than necessary. As a result, the rigidity of the engagement piece 48 is not weakened, and the locking of the lid 4 does not become insufficient.

Next, a description will be given of a second embodiment of a hinge-lid type pack having a structure different from that of the above-described embodiment. First, referring to FIG. 9, the portions centering on the inner front flap 44 and the front area 36 of the blanks 16 and 50, and the inner frame 8 and the tongue piece 12 are respectively shown in an enlarged scale in FIG. 2. In this pack example, the inner front flap 4
No inner cut line is provided at the center of 4, and a cutout 60 is provided instead. Meanwhile, front area 3
6, that is, on the front surface of the lid 4, there is provided a convex outer cut line C1 whose tip is directed toward the front opening edge of the lid 4, and a portion surrounded by the outer cut line C1 is: The push piece portion 45 is configured similarly to the above-described embodiment of the pack. In other words, in the release section of this pack,
The inner front flap 44 has no release piece.

More specifically, the cutout 60 is provided at the center of the inner front flap 44 so as to be opened at the center of the inner front flap 44. It has a shape. In addition, even with such a configuration of the release portion, the interval L2 is secured between the cutout 60 and the front area 36, and the cutout 60 and the front area 36 are formed in the inner front flap 44. Between the engagement pieces 4
8 are configured. In this case, the outer cut line C
An interval L1 between the top side of the first and the inner front flap 44 is set to be the same as the interval L2.

The pentagon in such a cutout 60 is:
The base has a shape in which both base angles of an isosceles triangle adjacent to the engagement piece portion 48 are cut off, and a pair of sides formed by the cut-off portion, that is, both ends of the base are directed toward the vertex. It consists of short open sides. Therefore, in this example, the engagement piece portion 48 is formed between the front side section 36 and the bottom side of the cutout 60 and the short inclined sides at both ends thereof.

In this embodiment, the tongue piece 12 is also formed by cutting and raising the tongue piece provided from the inner frame 8. The minimum width W2 (bottom side of the cutout 60) W2 of the engagement piece 48 is set to be wider than the width W5 of the tip of the tongue piece 12 and narrower than the width (maximum width) W3 of its base. . Referring to FIG. 10, the blanks 16 and 5 described above are used.
A lid portion of a hinged-lid pack formed from 0 is shown. When the lid 4 is completely closed as shown in the figure, the entire tongue piece 12 is positioned in the cutout 60 on the inner surface of the lid 4.

Referring to FIG. 11, a part of the cross section of the front opening edge of the lid 4 in a closed state is shown, and as shown in FIG. 48
Is separated from the tip of the tongue piece 12 as in the embodiment described above, and the tip of the tongue piece 12 abuts on the inner surface of the lid 4, that is, the front area 36. From this state, lid 4
Is slightly opened, as shown in FIG. 12, the tongue piece 12 is inserted from its tip into the cutout 60 toward the inner surface of the lid 4. At this time, as shown in FIG. 11, the engagement piece portion 48 is in a state of being separated from the inner surface of the lid 4, and the tip of the tongue piece 12 is smoothly cut out by rotating the lid 4 in the opening direction. It is relatively inserted into the mouth 60.

That is, the release portion of the hinge lid type pack is formed on the front surface of the lid 4 and has a convex outer cutting line C whose tip is directed toward the front opening edge of the lid 4.
1 and the central front portion of the inner front flap 44 is cut out leaving a portion serving as the engaging piece portion 48, and the tip of the tongue piece 12 is held on the inner surface side of the lid 4 when the tongue piece 12 is sandwiched by the engaging piece portion 48. And a cutout 60 that is inserted through the cutout 60.

As a result, as shown in FIG. 13, the tip of the tongue piece 12 is sandwiched between the inner surface of the lid 4 and the engagement piece 48, and the lid is similar to the above-described embodiment of the pack. 4 is locked to the pack body 2. next,
FIG. 14 shows a state where the pushing piece 45 is pushed in with the lid 4 closed. In this case, unlike the pack of the embodiment, the inner front flap 44 is not provided with a release piece, and the distal end of the push piece 45 is viewed from the front of the lid 4 as shown in FIG. The pushing piece 45 receives the pushing force F and its tip warps into the cutout 60.
At this time, as described above, the interval L1 between the opening edge on the front side of the lid 4 and the tip of the pushing piece 45 and the interval L1 between the locking edge of the engaging piece 48 are the same. As shown in FIG. 14, the leading edge of the pushing piece 45 and the locking edge of the engaging piece 48 substantially match each other. Further, the tongue piece 12 is pressed through the pushing piece portion 46 and is brought back from the cut and raised position.

When the lid 4 is slightly rotated in the opening direction with the pushing of the pushing piece 45, the inner surface of the lid 4 is separated from the front surface of the inner frame 6 so that the tongue 12 has its elastic force. As a result, the leading edge of the pushing piece 45 and the locking edge of the engaging piece 48 substantially coincide with each other even if the tongue piece 1 returns to the original cut-and-raised attitude.
The tip of No. 2 is not inserted into the cutout 60. Therefore, the tip of the tongue piece 12 is not inserted between the engagement piece portion 48 and the inner surface of the lid 4. Thereafter, when the lid 4 is rotated to a position where the engagement piece 48 and the tongue 12 overlap with each other, the engagement piece 48 and the tongue 12 are engaged even if the pushing piece 45 is no longer pushed. Since the lid 4 is not locked at the same time, the lid 4 can be easily opened.

In the hinge lid type pack of the second embodiment, the engagement between the tongue piece 12 and the engagement piece 48 is different from that of the above-described pack. In the above-described embodiment, the tip portion of the tongue piece 12 is entirely engaged with the engagement piece portion 48. In this example, however, in FIG.
As shown in FIG. 5, the both edges of the tongue piece 12 and the engagement edges of the engagement piece portions 48 each having the two short inclined sides of the pentagon overlap each other, so that these tongue pieces 12 and the engagement piece portions 48 are formed. Are engaged. That is, as described above, since the minimum width W2 of the engagement piece 48 is smaller than the width W3 of the base of the tongue 12, the tongue 12 further moves with the engagement piece 48 and the lid 4 as the lid 4 rotates. Even if inserted between them, the tongue piece 12 is not completely sandwiched between the engagement piece 48 and the inner surface of the lid 4 up to its base.

Even when the lid 4 is further rotated from the engagement state of the tongue piece 12 and the engagement piece part 48, the engagement between the tongue piece 12 and the engagement piece part 48 is good. And the tongue piece 12 is flipped to generate a clear click sound. At this time, the engaging edge of the engaging piece 48 does not catch on the base of the tongue piece 12, and the engagement is smoothly released with the rotation of the lid 4. Further, even if the lid 4 is repeatedly opened and closed without such pushing of the pushing piece portion 45, the tongue piece 12 does not break from its base. Also, when the lid 4 is rotated in the opposite direction from the open state and closed, the tongue piece 12 rebounds and strikes the inner surface of the lid 4 as in the above-described embodiment. Is generated.

Here, the hinge lid type pack is usually
When the lid 4 is opened and closed in a state where a relatively large number of filter cigarettes are left in the pack body 2 while the filter cigarette is filled with 20 filter cigarettes, the filter cigarette arranged in the front row is sucked. The end portion is repeatedly rubbed against the inner surface of the lid 4, that is, the inner front flap 44. At this time, if an opening such as a cutout is provided in the inner front flap 44, the opening edge may be strongly caught by the suction end of the filter cigarette depending on the shape of the opening. However, in the pack of this example, the shape of the cutout 60 is a pentagonal shape having a vertex located on the tip side of the inner front flap 60, and two sides sandwiching the vertex are long inclined sides inclined with respect to the opening and closing direction of the lid 4. Therefore, the opening edge of the cutout 60 formed by the pair of inclined sides does not strongly catch on the suction end of the filter cigarette.

The opening shape of the cutout 60 may be any other polygonal shape, for example, any of a triangle and a quadrangle. FIG.
Referring to FIG. 5, there is shown an example in which the opening of the cutout 60 has a triangular shape. Also in this case, an outer cut line C1 similar to that shown in FIG. 9 is provided in the front area 36 to form a pushing piece 45. When the pushing piece 45 is pushed in, the pushing piece 45 shown in FIG.
As in the example shown in FIG. 4, the tongue piece 12 can be effectively prevented from being pinched.

An engaging piece 48 consisting of a triangle base
Is set to be wider than the width W5 of the tip of the tongue piece 12 and narrower than the width W3 of the base of the tongue piece 12.
It is possible to prevent the tongue piece 12 from being damaged when the lid 4 is opened without pushing in the tongue 5. As is apparent from the figure, since the apex of this triangle is located on the tip side of the inner front flap 44, the opening edge of the cutout 60 is formed at the opening end of the filter cigarette when the lid 4 is opened and closed. Does not get caught strongly.

The above-described various shapes of the cutout 60 are all tapered toward the tip of the inner front flap 44 from the engagement piece portion 48 side. That is, the cutout 60 may have such a tapered shape, and the corners of the polygons in each of the above-described examples may be formed in an arc shape, and the sides may be formed from curves. You may.

Next, referring to FIG. 16, as in the case of the two packs described above, the inner front flap 44 is not provided with the cut line C or the cutout 60, and has a cutout at the center thereof. Is provided. In this case, the notch 62 of the inner front flap 44 has an inverted trapezoidal shape extending from the tip of the inner front flap 44 toward the front area 36, and is formed between the bottom thereof and the front area 36. Is formed with an engagement piece 48.

In addition, the present invention can be variously modified without being limited to the above embodiments. For example,
The tongue piece 12 is not only cut and raised by a score line provided in the wrap area of the inner frame 8, but also shown in FIG.
As shown in FIG. 7, a notch 64 is provided by notching a rectangular portion of the inner frame 8 with the outer frame 6, and the tongue piece 12 is protruded and provided in the notch 64. Is also good. Note that, even in this case, the tongue piece 12
Are cut and raised toward the front side of the pack body 12.

The shape of the hinge lid type pack to which the present invention can be applied is not limited to a rectangular parallelepiped as in each embodiment. For example, a longitudinal edge of a rectangular parallelepiped as shown in FIG. 18 is chamfered. It may be a formed box (a so-called octagon box) or a box (a so-called round corner box) whose edges are chamfered in an arc shape as shown in FIG. Others
As shown in FIG. 20, a box body having only one chamfered edge (a so-called bevel edge box) may be used.

Further, the present invention is not limited to the above embodiments, and various modifications are possible. For example, the tongue piece 12 may be a tongue piece that extends integrally from the bottom edge of the cutout recess 10 of the inner frame 8 and is turned back. Further, the shapes of the outer cut line C1 and the inner cut line C2 are not limited to a semi-circular shape or a U-shape as in each embodiment, but can be changed to, for example, a trapezoidal shape or a semi-elliptical shape.

In each embodiment, the pack body 2 is composed of the outer frame 6 and the inner frame 8, but the inner frame may be formed integrally with the outer frame. The inner frame 8 may further be provided with a pair of left and right lid locks.

[0060]

As described above, according to the cigarette hinge type pack having the lid unlocking mechanism of the first aspect,
When the lid is slightly rotated in the open direction from the closed state,
At this time, the lid is securely locked so that it is not opened carelessly. Further, when the lid is opened as desired, the lid can be prevented from being easily locked by the pushing operation from the front of the pack.
The lid can be opened smoothly without large elastic deformation of the base of the tongue piece or the engagement piece. Therefore, since the lid can be prevented from being inadvertently opened and the lid can be easily opened when desired, a hinge-lid type pack useful for smokers can be obtained.

Further, even if the lid is repeatedly opened, the tongue and the engaging piece are not damaged, and the locking structure of the lid can be maintained for a long time. According to the hinge lid type pack with the lid unlocking mechanism of the second and third aspects, when a portion surrounded by the inner cut line of the inner front flap receives a pushing force, the tongue piece should be inserted by this portion. Since the gap is closed,
Locking of the lid can be satisfactorily and reliably prevented.

Further, according to the hinge lid type pack of the third and fourth aspects, even if the lid is repeatedly opened and closed, the mouth end of the cigarette is not damaged, and the quality of the packaged cigarette is not impaired.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a hinge lid type pack for a filter cigarette.

FIG. 2 is a development view of a blank constituting the pack of FIG. 1;

FIG. 3 is a view showing the lid in a closed state with a part cut away.

FIG. 4 is a diagram showing a state when a lid is locked.

FIG. 5 is a view showing a state in which the pushing piece is pushed in from the state of FIG. 3;

FIG. 6 is a view showing a state where a lid is opened without being locked.

FIG. 7 is a diagram showing a state immediately before the lid is completely closed.

FIG. 8 is a diagram illustrating a state where a lid is opened while being locked.

FIG. 9 is a development view of a blank provided with a cutout in the inner front flap.

FIG. 10 is a perspective view of a hinge lid type pack formed from the blank of FIG. 9;

FIG. 11 is a partially broken view showing a state where the lid of the pack of FIG. 10 is closed.

FIG. 12 is a diagram showing a state when the lid is slightly opened.

FIG. 13 is a partially cutaway view of the lid in the state of FIG. 12;

FIG. 14 is a diagram showing a state when a pushing piece is pushed in.

FIG. 15 is a diagram showing an example in which the cutout of FIG. 9 has a triangular shape.

FIG. 16 is a diagram showing an example in which a notch is provided in the inner front flap.

FIG. 17 is a view showing a modification of the tongue piece.

FIG. 18 is a perspective view showing a modified example of a hinge lid type pack to which the present invention can be applied.

FIG. 19 is a perspective view showing a modification of the hinge lid type pack.

FIG. 20 is a perspective view showing a modification of the hinge lid type pack.

[Explanation of symbols]

 2 Pack body 4 Lid 8 Inner frame 12 Tongue piece 14 Self-hinge 44 Inner front flap 45 Push-in piece part 46 Release piece part 48 Engagement piece (engagement piece) 60 Cutout

Claims (4)

(57) [Claims] 1. A pack body having one end opened and rotatably connected to a rear opening edge of the pack body via a self-hinge to cover the open end of the pack body and close the pack body. A cigarette having a box-shaped lid and a wrap area provided on the front surface of the pack body, wherein a front opening edge of the pack body and a front opening edge of the lid overlap each other when the lid is closed. In the hinge lid type pack, the pack is provided in the wrap area of the pack body, and
A tongue piece projecting from the front wall of the lock body, and an engagement piece provided at the opening edge of the lid,
When the lid is in the closed state, pull the engagement piece forward.
Adjacent to the distal end of serial tongue, whereas, when said lid is rotated slightly open direction from the closed state, between the inner surface of the lid and front Symbol engagement piece the tip of the tongue An engagement portion for engaging the lid with the pack body; and partially inside a front wall of the lid covering the wrap area.
Toward provided to be push, when rotated in the opening direction slightly from a state in which the lid is closed with a push-to prevent jamming of the tongue by the engagement portion
To close the entrance between the engagement piece and the inner surface of the lid
Jill hinged lid type pack unlocking mechanism with tobacco lid, characterized by comprising a releasing portion. 2. The opening edge of the lid is formed from an inner front flap which is continuous with the lid and is turned inward to form a front opening edge of the lid, and wherein the release portion is provided on the lid. A push piece formed on the front surface, the tip of which is defined by a convex outer cut line directed to the opening edge on the front side of the lid, and a central portion of the inner front flap, the tip of which is formed by the lid. 2. The unlocking mechanism for a lid according to claim 1, further comprising a releasing piece portion directed to a front opening edge and partitioned by a convex inner cutting line that simultaneously forms the engaging piece. 3. Hinge lid type pack with attached cigarette. 3. The opening edge of the lid is formed from an inner front flap that is continuous with the lid and that is folded inward to form a front opening edge of the lid. A pressing piece formed on the front surface, the tip of which is partitioned into a convex outer cutting line whose front end is directed to the opening edge on the front side of the lid, and the opening edge at the center of the inner front flap. cut out leaving a portion to be the engaging piece, and a cutout opening to be inserted toward the inner surface side of the cut-and-raised tongue tip said lid in said pinching condition of said engaging portion, said cut The hinge-lid type pack with a lid unlocking mechanism according to claim 1, wherein the mouth has a tapered shape from the engagement side to the tip of the inner front flap. 4. The cigarette hinge-type pack according to claim 3, wherein the cutout has a polygonal shape.