JP2013166588A - Opening structure of plastic container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily open a cover body and allow contents to be taken out without any time and effort.SOLUTION: An opening structure is provided with a substantially parallelepiped body 1 having a port for taking out contents, and a plate-like cover body 2 which is integrally formed on an upper part of the body by injection molding. The body 1 includes a pressure part 11 which is pressurized and transmits stress to the cover body 2, and a pressure part pocket 12 having an opening 12a for housing at least an upper part of the pressure part during pressurization. The cover body 2 is rotatably connected to the pressure part 11 via a bend part 13. When the cover body 2 is opened, the stress is concentrated on an upper part of the pressurized pressure part 11, and the bend part 13 starts warping. When the amount of warp of the bend part 13 increases, the stress is applied to the cover body 2 to start warping. When the amount of warpage of the cover body 2 increases, the cover body is raised to form a truss together with the pressure part 11.

Description

  The present invention relates to an opening structure of a plastic container that opens a lid with one hand, and more particularly to an opening structure of a plastic container that can maintain a state in which the lid is raised even if the hand is released.

  Conventionally, cigarettes and straws are sold in small cases that are easy to carry. The consumer opens the take-out port provided in this case and takes out the contents. However, if the take-out port is left unsealed, the contents not only go out of the case when being carried, but also easily deteriorated due to easy contact with air. Therefore, these cases are provided with a lid for closing the opened portion.

  By the way, the above-described lid body includes, for example, a cover for covering the content extraction port from the top and a lock for the extraction port. However, in the case of such a lid, the user must open and close the lid with the other hand while holding the case body with one hand, which is troublesome. The contents may not be taken out if one hand is blocked, especially if you have a baggage, and if you try to open the lid with the finger of the hand that is grabbing the case body, the balance may be lost and the case may fall is there.

  Therefore, a part of the back surface of the case main body is provided with a pressing operation portion having a groove that is connected to the lid and bends inward at the center, and the lid is interlocked and released by pressing the pressing operation portion with a finger ( For example, see Patent Document 1).

Republished WO95 / 09777

  However, according to the conventional idea described above, it is impossible to keep the lid open by hand. That is, unless the pressing operation unit is continuously pressed with a finger, the pressing operation unit returns to its original shape, and the lid is closed. Therefore, it is difficult to take out the contents.

  In recent years, tablet-like oral foods are sold in small plastic containers. In general, a plastic container that slides an oral food outlet and an opening / closing outlet on the side of the container are used. However, even in such a container, the above-described problems of the prior art are not solved. For example, a businessman who eats oral food while carrying a portable terminal with one hand or operating a mouse on a personal computer. And inconvenient for students.

  Accordingly, an object of the present invention is to provide an open structure of a plastic container that can easily form an open state of a lid and take out contents without trouble.

  In order to solve the above-mentioned problems, the open structure of the plastic container according to the present invention is characterized in that a truss is formed by bending of the lid when the lid is opened and standing.

  That is, the open structure of the plastic container according to the present invention includes a main body and a plate-like lid integrally injection-molded on the upper portion of the main body, and the main body forms part of the side wall of the main body and pressurizes. A pressure unit that transmits stress to the lid, and a pressure unit pocket that accommodates at least the upper part of the pressure unit and is open at the upper end when the pressure is applied, and the lid is an upper part of the main body. The pressurizing part is pivotally connected via a bent part that forms a part of the outer edge. When the lid is opened, stress concentrates on the pressurized portion above the pressurized portion and the bent portion begins to bend, and when the amount of bending of the bent portion increases, the stress is applied to the lid and bends. First, when the amount of bending of the lid increases, the lid rises and forms a truss integrally with the pressure member.

  By the way, if the pressurizing unit is pressurized without limit, the pressurizing unit and the lid may be damaged. Therefore, when the pressurizing unit is pressurized, the upper side of the pressurizing unit collides with the inner wall of the pressurizing unit pocket facing the pressurizing unit.

  Moreover, when the said pressurization part is a part of side wall of the said main body, it is difficult to form the said truss, and there exists a possibility that a cover body may close. Therefore, a slit is provided in each of the left and right sides of the pressurizing unit in the vertical direction, and the slit passes through the bent portion and enters a part of the lid, and the lid includes the slit. A lid leg portion having a groove portion provided in parallel with the bent portion is formed from near the upper side to the outer side. When the lid is closed, the bent portion side of the lid leg is recessed and inclined from the surface of the lid. Further, in a state where the lid body stands up, the bent portion side of the lid body leg portion is positioned inward from the side wall of the main body.

  In addition, since the truss formed integrally with the pressurizing portion with the lid standing is not fixed, the lid may be closed depending on how it is used. Therefore, a concave groove is provided in the vertical direction from above the back surface of the pressure unit. On the inner wall of the pressurizing portion pocket, a convex portion is provided at a position facing the concave groove. When the pressurizing part is pressurized, the convex part is fitted into the concave groove.

  In addition, the concave groove is not limited to the one in which the back surface of the pressurizing portion is recessed, and may have another shape. Therefore, the concave groove is formed by a pair of protrusions protruding from the back surface of the pressure part.

  Further, the position and number of the concave grooves are not limited to the center of the back surface or the single number of the pressing portion. Therefore, the concave groove is provided in the vicinity of the left and right ends of the back surface of the pressure unit.

  Moreover, there is no limitation in the shape of the said main body, What is necessary is just to be able to possess the contents. Therefore, the shape of the main body is rectangular or cylindrical.

  A packing-like member is provided on the periphery of the outlet of the main body.

  The “pressurizing part” means a button that is pressed to open the lid, and corresponds to a part that is pressed by one of the fingers of the hand holding the plastic container. The size of the pressurizing part is not limited, and may be wider or narrower than the lid. The “pressurized pocket” corresponds to a box-shaped one provided inside the main body. The “opening” at the upper end of the pressurizing pocket is not limited to a rectangular shape, but also includes a shape in which one side is curved.

  The “bending portion” means a hinge that allows the lid body to easily rotate, and corresponds to, for example, a V shape.

  “The lid rises and forms a truss integrally with the pressurizing part” means that when the lid rises, the lid and the pressure part become a single plate-like body. This means that a bent portion located near the center of the plate-like body bends inward to form a substantially triangular shape when viewed from above.

  The “slit” means a cut that partially separates the pressurizing portion and the side wall of the main body, and there is no limitation on the length, width, or interval at which the slit is provided.

  The “groove portion” means a hinge that makes it easy for the lid leg portion to rotate. For example, the groove portion is not limited to a V shape, and corresponds to a rectangular shape or a simple crack. The “lid body leg part” means an object that promotes a truss formed integrally with the pressurizing part by raising the lid body, and is not limited in length or width.

  In the opening structure of the plastic container according to the present invention, when the lid is opened, stress concentrates on the upper side of the pressurized pressurizing portion and the bent portion starts to bend. When the stress begins to bend and the amount of bending of the lid increases, the lid rises and forms a truss together with the pressurizing part, so the lid can be easily opened with one push. In addition, the lid can hold upright. Therefore, the contents can be easily ingested or distributed to a third party without continuing to pressurize the pressurizing unit.

  Furthermore, when the pressurizing unit is pressurized, the upper side of the pressurizing unit collides with the inner wall of the pressurizing unit pocket, so that not only the pressurization limit can be recognized by the sound at the time of the collision, You can enjoy the feeling of opening the lid.

  Further, when the lid is closed, the bent portion side of the lid leg formed on the lid is recessed and inclined from the surface of the lid, and when the lid is upright, the lid leg is bent. Since the part side is located inward from the side wall of the main body, not only the stress is easily transmitted from the pressurizing part to the lid, but also because it is easy to match the truss shape of the lid with the lid leg standing, Can be held.

  In addition, the convex part of the inner wall of the pressurizing part pocket is fitted into the concave groove on the back surface of the pressurizing part, so that the pressurizing part is fixed. Therefore, the lid closes even if the plastic container is shaken or tilted vigorously. hard. By forming the concave groove with a pair of projecting portions, the convex portion can be fitted deeply into the concave groove. Since the concave grooves are provided near the left and right ends of the back surface of the pressurizing unit, the vicinity of both ends of the pressurizing unit is fixed, so that the pressurizing unit can be more strongly fixed.

It is a perspective view in the state where the lid of a plastic container was opened. It is the front view and back view in the state where the lid of the plastic container was opened. It is a figure which shows the operation | movement at the time of opening of the cover body of a plastic container. It is a partial cross section figure in the state where the lid of a plastic container was opened. It is a perspective enlarged view of the state where the lid of a plastic container provided with a ditch and a convex part was opened. It is a partial perspective enlarged view of the state where the lid of the plastic container provided with another concave groove and a convex part was opened. It is sectional drawing which shows the operation | movement at the time of the cover body open | release of the plastic container provided with the ditch | groove and the convex part. It is a perspective enlarged view in the state where the lid of a plastic container provided with a packing-like member was opened. It is a perspective enlarged view of the state where the lid of the plastic container provided with another packing-like member is opened.

  Hereinafter, the opening structure of the plastic container according to the present invention will be described with reference to FIGS. First, the basic structure of this plastic container will be described with reference to FIG. FIG. 1 shows a perspective view of a state in which a lid of a plastic container is standing.

  As shown in FIG. 1, the plastic container includes a substantially rectangular parallelepiped main body 1 having a content outlet, and a lid 2 integrally injection-molded at the upper end of the main body. The main body 1 includes a pressurizing unit 11 that pressurizes and transmits stress to the lid body 2 and a pressurizing unit pocket 12 provided with an opening 12a that accommodates at least the upper part of the pressurizing unit at the time of pressurization. The lid 2 is rotatably connected to the pressurizing unit 11 via the bent portion 13. When the lid 2 is opened, stress concentrates above the pressurized pressure part 11 and the bent part 13 begins to bend. When the amount of bending of the bent portion 13 increases, the stress is applied to the lid 2 and the bending starts. When the amount of bending of the lid body 2 increases, the lid body stands up and forms a truss together with the pressure unit 11.

  The lid 2 is connected to the upper edge of the back wall of the main body 1. When the lid body 2 is closed, the lid body coincides with the concave portion provided on the upper end surface of the main body 1 and is thus flush with the upper end surface. A hook is provided inside the bent distal end portion of the lid body 2, and the hook is hooked on an elongated projecting portion provided in front of the concave portion of the main body 1 to close the lid. In order to prevent the hook from being damaged at the time of injection molding, a step of slightly retracting and lifting one of the molds is performed.

  Here, each part of the open structure of the plastic container will be described with reference to FIG. FIG. 2A shows a state in which the lid of the plastic container stands up, and FIG. 2B shows a state in which the lid is viewed from the back.

  The pressure unit 11 is narrower than the lid 2 and is a part of the back wall of the main body 1, and is flush with the side wall when the lid is closed.

  The pressurizing portion pocket 12 is provided on the back side of the back wall of the main body 1 and has a trapezoidal shape that becomes deeper as it goes upward. The inner wall of the pressurizing portion pocket 12 is inclined. The opening 12a provided at the upper end of the pressurizing portion pocket 12 can be visually recognized when the lid 2 is open.

  The bent portion 13 is a V-shaped groove, and when the lid body 2 is closed, the inner side surfaces of the V-shape are in contact with each other, and the lid body rotates around the V-shaped valley portion.

  Further, slits 14 and 14 are provided in the vertical direction on both sides of the pressurizing part 11, and the slits enter the one end of the lid 2 beyond the bent part 13. Lid legs 21, 21 having V-shaped grooves 21 a, 21 a provided in parallel with the bent part 13 from the upper part of the slits 14, 14 toward the outside of the lid 2 on both sides of the lid 2. Is formed.

  The slits 14 and 14 are provided in the main body 1 at intervals and lengths in which, for example, the upper part of the thumb or index finger can be accommodated. That is, the pressurizing unit 11 is connected to the main body 1 only at the lower end portion, and is easy to pressurize inward.

  The lid legs 21 and 21 are inclined when the lid 2 is closed because the bent portion side of the lid legs is slightly recessed from the surface of the lid. . The lower ends of the lid leg portions 21 and 21 are connected to the main body 1.

  Next, the operation from the state in which the lid of the plastic container is closed to the state in which the lid is opened and stood will be described with reference to FIG. In addition, the arrow on a figure shows the direction of pressurization.

  As shown in FIG. 3A, when the lid 2 is closed, the pressurizing unit 11 is flush with the back wall of the main body 1, and the lid 2 is the top surface of the main body 1 except for the lid leg 21. And become the same. On the other hand, the bent leg 13 side of the lid leg 21 is recessed, and the lid leg is slightly inclined with respect to the upper surface of the main body 1.

  Next, as shown in FIG. 3B, when the pressurizing unit 11 is pressed with a finger and pressed, the lower end of the pressurizing unit is connected to the main body 1 and is fixed. Concentrating on the upper side of the pressure portion, the bent portion 13 begins to bend and curves inward. When the amount of bending of the bent portion 13 increases, the stress is applied to the lid body 2 and starts to bend. Therefore, the hook of the lid body comes off from the protruding portion of the main body 1 and the lid body 2 starts to open.

  And as shown in FIG.3 (c), if the pressurization part 11 is continued to be pressurized, the bending amount of the cover body 2 will increase, and this cover body and a pressurization part will become a dogleg shape. At this time, the lid body leg portion 21 rotates with respect to the lid body 2 with the groove portion 21a serving as a hinge. Therefore, after the inclination of the lid body becomes 90 ° or more, stress is applied to the lid body leg portion. It is hard to be transmitted and stays at an obtuse angle. Further, the upper portion of the pressurizing unit 11 is stored in the pressurizing unit pocket 21 and the pressurizing unit collides with the inner wall of the pressurizing unit pocket, so that a collision sound is generated.

  Thereafter, as shown in FIG. 3D, when the pressurization is stopped, the pressurizing part 11 tries to return to the original shape by a reaction force, but the pressurizing part and the lid 2 warp inward due to the characteristics of the plastic. Stand still. At this time, the lower end of the lid body leg portion 21 is located behind the lid body 2 and ahead of the back wall of the main body 1 and therefore substantially matches the shape of the warped lid body.

  Therefore, as shown in FIG. 4, the lid body 2 stands up and is integrated with the pressurizing unit 11, and when viewed from above, the lid body forms a substantially triangular truss, so that the standing body is kept stationary. Can do.

  As described above, in the open structure of the plastic container, when the lid 2 is opened, stress concentrates above the pressurized pressurizing portion 11 and the bent portion 13 starts to bend, and the amount of flexure of the bent portion increases. Then, the stress starts to be applied to the lid, and when the amount of deflection of the lid increases, the lid rises and forms a truss integrally with the pressurizing part. In addition to being able to open the lid, the lid can hold upright. Therefore, the contents can be easily ingested or distributed to a third party without continuing to pressurize the pressurizing unit 11.

  When the pressurizing unit 11 is further pressurized, the upper side of the pressurizing unit collides with the inner wall of the pressurizing unit pocket, so that not only the pressurization limit can be recognized by the sound at the time of the collision. , You can enjoy the feeling of opening the lid.

  When the lid body 2 is closed, the bent portion 13 side of the lid body leg portion 21 formed on the lid body is inclined and recessed from the surface of the lid body, and when the lid body stands up, the lid body The bent portion side of the leg portion is positioned inward from the side wall of the main body, so that not only the stress is easily transmitted from the pressurizing portion to the lid body, but also the truss shape of the lid body where the lid body leg portion stands. Since it is easy to do, it can hold a stationary state.

  Also, when the lid is opened by the pressure operation of the fingertip, the lid tends to move in the closing direction when the pressurized finger is released, which is inconvenient for taking out the contents. The cause is that the inertia of the container, the cap hinge portion, and the like returns to the original state when it is placed in a state during molding or in a closed state for a long time.

  The lid opens when the container or cap user pressurizes the pressurizing part with a finger, and expects the inertia to close when the finger is released, or the lid remains open even when the finger is released. Whether a mechanism that facilitates the removal of objects is expected or not, if a container or cap is provided with a lid-holding mechanism, it will be easier to use and more convenient.

  In the one-push open cap, pill case, etc., in order to realize the above-mentioned opening and holding mechanism, in order to avoid productivity and cost increase, it is realized by integral molding without adding new processing and parts, It is possible to realize sharpness and crispness in opening and closing operations.

  Then, the open structure of the plastic container provided with the ditch | groove and the convex part is demonstrated using FIG. As shown in FIG. 5, a concave groove 111 a is provided in the vertical direction from the upper end of the back surface of the pressure member 111 of the main body 101. On the inner wall of the pressurizing portion pocket 112, a convex portion 112b is provided at a position facing the concave groove. When the pressurizing part 111 is pressurized, the convex part 112b fits into the concave groove 111a. Therefore, since the pressurizing unit 111 is fixed to the inner wall of the pressurizing unit pocket 112, the lid 102 is difficult to close even if the main body 101 of the plastic container is vigorously shaken or tilted.

  Moreover, the open structure of the plastic container provided with another ditch | groove and a convex part is demonstrated using FIG. 6A shows a state before the convex portion is fitted in the concave groove, and FIG. 6B shows a state where the convex portion is fitted in the concave groove. Note that lids and bent portions that are not necessary for the description are not shown.

  As shown in FIG. 6A, concave grooves 211a and 211a formed by a pair of protrusions 211b and 211b protruding from the back surface of the pressure member 211 of the main body 201 are provided near the left and right ends of the back surface. Yes. The depth and width of the concave grooves 211a and 211a are determined according to the dimensions of the protruding portions 211b and 211b. Therefore, as shown in FIG. 6B, when the pressurizing portion 211 is pressurized, not only the convex portions 212b and 212b opposed to the concave grooves 211a and 211a are fitted deeply, but also near both ends of the pressurizing portion 211. Because it is fixed with, it can be fixed more strongly.

  Here, the operation when the lid of the plastic container provided with the concave groove and the convex portion shown in FIG. 6 is opened will be described with reference to FIG. The protruding portion 211b becomes narrower toward the lower portion and becomes zero at the lowermost end portion so as not to prevent deformation of the pressing portion 211 during pressurization. The convex portion 212b conforms to the size and shape of the concave groove 212a and is slightly narrower than the concave groove, and the projecting width becomes narrower toward the lower portion and becomes zero at the lowermost end portion.

  The pressurizing part 211 having the projecting part 211b disposed inside is bent and deformed around a point (point O) fixed to the main body 201 by pressurization, and has an arc shape with a radius up to the bent part 213. The lid 202 is pressed in the direction of rotation around the trajectory. On the other hand, the lid body leg portions 221 arranged on the left and right sides via the bent portion 213 move to prevent the lid body 202 from being deformed in the rotation direction. These two different forces are accumulated in the groove portion 221a where the lid body 202 and the lid body leg portion 221 are connected, and the lid body and the lid body leg portion connected to the groove portion are opened upwardly in response to the opening. .

  At this time, the bent portion 213 where the lid body 202 and the pressurizing portion 211 are connected has a radius L1 shown in the drawing centering on the place where the pressurizing portion 211 is fixed to the main body 201 by the pressurizing operation (point O). A circular arc is drawn and moved from the point M1 in FIG. 7A to the point M2 shown in FIG. 7B. Further, one end of the lid leg 221 is connected to the body 201 and the bent portion 213, and the other end is connected to the lid 202 via the groove portion 221a. A circular arc having a radius L2 around the point is drawn and moved from the point N1 in FIG. 7A to the point N2 in FIG. 7B. In addition, along with these operations, the bent portion 213 where the lid 202 and the pressurizing portion 211 are connected draws an arc having a radius L3 with the point N2 in FIG. 7B as the center, and FIG. It moves from point M1 to point M2 in FIG.

  That is, the trajectory of the pressurizing unit 211 and the trajectory of the lid body 202 operate by drawing arcs that are opposite to each other. At the intersection (vertex) where the arcs intersect each other, resistance is generated in each other's movement, and the movement becomes extremely light after passing this vertex. This feeling of resistance and lightness is accompanied by a slight accent when the lid is opened, and the engagement between the concave groove 211a and the convex portion 212b for maintaining the open state of the lid by collecting the applied pressure. To make it easier. And the convex part 212b is settled in the ditch | groove 211a formed in the cover body 202, and a cover open state can be maintained. That is, since the pressurizing part 211 side and the lid leg part 221 side are stable in a triangle-type facing state, the opening of the lid is maintained.

  By using two different arc motions during pressurization, and by arranging concave and convex male and female ribs on the inside of the pressurization part and the main body side to maintain the open state of the lid more reliably , The resistance when passing the top of two different arcs when opening and closing the lid, and the fact that these fit past the top are interlocked, and it can realize a crispness when opening and closing, the content of the contents inside the container Easy to take out.

  When the lid 202 is closed, if the end of the lid on the rotation side (opening side) is pushed, the principle acts by using the N2 point in FIG. 7B as a fulcrum. While being easily released from the clamping state by the protruding portion 211b, the point M2 moves back to the position of the point M1. Then, after the intersection (vertex) where the arcs intersect each other, the lid 202 is closed again with a refreshing feeling.

  The protruding portion 211b and the protruding portion 212b may be formed on the opposite sides. By making it parallel to the X1-X1 axis shown in the figure, it becomes easy to come off during formation.

  The packing-like member provided in the plastic container will be described with reference to FIG. As shown in FIG. 8A, a packing member 315 is provided on the periphery of the take-out port 314 of the main body 301. FIG. 8B is a view of the CC cross section of FIG. 8A as viewed obliquely from above. A groove portion for disposing the packing member 315 is provided on the peripheral edge 314a of the take-out port 314, and the packing member 315 is packed in the groove portion. FIG. 8C shows a plastic container in which the periphery of the takeout port 414 is covered with a packing member 415.

  Further, a lid-like packing-like member provided on the plastic container will be described with reference to FIG. FIG. 9B is a view of the DD cross section of FIG. 9A as viewed obliquely from above. As shown in FIGS. 9A and 9B, the takeout port 514 is provided with a lid packing member 515 having a base 515a that sandwiches the peripheral edge 514a of the takeout port.

  The open structure of the plastic container in the present invention is not limited to the industry such as oral food, and can be widely used in industries related to stationery such as business cards and cards.

DESCRIPTION OF SYMBOLS 1 Main body 11 Pressurization part 12 Pressurization part pocket 12a Opening 13 Bending part 2 Lid

Claims (8)

A main body and a plate-like lid integrally injection-molded on the upper portion of the main body;
The main body is located on the back side of the pressurizing part and is applied at the time of pressurization. A pressure part pocket that houses at least the upper part of the pressure part and has an upper end opened;
The lid body is rotatably connected to the pressurizing part through a bent part that forms a part of the upper outer edge of the main body,
When the lid opens, the stress concentrates on the pressurized part and the bent part begins to bend,
When the amount of bending of the bent portion increases, the stress is applied to the lid body and begins to bend,
When the amount of bending of the lid increases, the lid rises and forms a truss integrally with the pressurizing portion. 2. The plastic container opening structure according to claim 1, wherein when the pressurizing unit is pressurized, an upper side of the pressurizing unit collides with an inner wall of the pressurizing unit pocket facing the pressurizing unit. . On both the left and right sides of the pressure unit, there are slits in the vertical direction,
The slit enters the part of the lid body beyond the bent portion,
The lid body is formed with a lid leg portion having a groove portion provided in parallel with the bent portion from the vicinity above the slit toward the outside.
In the state where the lid is closed, the bent portion side of the lid leg is recessed and inclined from the surface of the lid,
3. The plastic container opening structure according to claim 1, wherein, in a state in which the lid body is erected, the bent portion side of the lid body leg portion is positioned inward from the side wall of the main body. A concave groove is provided in the vertical direction from above the back surface of the pressure unit,
On the inner wall of the pressurizing portion pocket, a convex portion is provided at a position facing the concave groove,
The plastic container opening structure according to any one of claims 1 to 3, wherein when the pressurizing part is pressurized, the convex part is fitted into the concave groove. The open structure of the plastic container according to claim 4, wherein the concave groove is formed by a pair of projecting portions projecting from the back surface of the pressurizing unit. The plastic container opening structure according to claim 4 or 5, wherein the concave groove is provided in the vicinity of the left and right ends of the back surface of the pressurizing portion. The plastic container open structure according to any one of claims 1 to 6, wherein the main body is rectangular or cylindrical. The opening structure of the plastic container according to any one of claims 1 to 7, wherein a packing-like member is provided at a peripheral edge of the outlet of the main body.

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