JPH04121237U - Lid for food storage containers - Google Patents

Abstract

(57) [Summary] [Purpose] By reducing the maximum force required to open the lid, the lid can be opened more smoothly, accurately, and stably with a moderate amount of force. The goal is to [Structure] A plurality of connection pieces 11 are connected to a ring plate 5 having a claw piece 7 attached to a handle piece 10 at the tip, and an assembly cylinder piece 12 located at a narrow interval on the outer periphery of this ring plate 5. It is composed of a lid body 2 connected to each other, and an aluminum laminated sheet tightly welded to cover the entire lower surface of this lid body 2. By arranging a plurality of connecting pieces asymmetrically in the front-back direction, the connecting pieces Breaks are accomplished individually in sequence, thereby reducing the maximum opening force.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a food product that seals and stores foods that are heat-treated after being sealed, such as retort foods. This invention relates to a lid attached to a product storage container.

0002

[Conventional technology]

For containers that store foods that are heat-treated after being sealed, such as retort foods, First of all, it ensures a tight seal until the package is opened, and the operation when opening is easy and reliable. It is hoped that this can be achieved.

0003 This type of container is easy to mold and handle, and is inexpensive. It is often molded from synthetic resin because it can be obtained from For a hermetic seal, an aluminum laminated sheet is welded to the bottom of the lid body, so that when the lid is opened, A configuration has been considered in which this aluminum laminated sheet is broken and removed along with part of the lid body. Ru.

0004 For example, the food storage container shown in Japanese Utility Model Application Publication No. 2-111623 is of this type. This is a typical type of container, and the lid that fits into the opening of the container is made of synthetic resin. The lid member is welded to the lower surface of the lid member, and the peripheral edge is attached to the rim of the opening of the container. It consists of laminated aluminum sheets that are welded together.

[0005] The lid member of this lid body has a tip edge with a pointed protrusion, and a handle piece that is aligned rearward. A claw piece extending from the body is attached to the periphery of the ring plate integrally formed at the tip, and to the rim of the container. The assembled cylindrical pieces to be fitted are connected in series via multiple easily breakable connecting pieces. ing.

[0006] To open this lid, the first step is to pull up the handle piece of the lid member, and the tip of the claw piece is opened. The prongs formed on the edge are moved downward to break the aluminum laminated sheet directly below, and the The second step, which is the subsequent pulling up of the handle piece, breaks the connecting piece and removes the ring plate. While separating it from the assembled cylinder piece, place the broken part of the aluminum laminated sheet on the ring plate. This is achieved by expanding along the outer periphery of.

[0007]

[Problem that the idea aims to solve]

However, in the above-mentioned conventional technology, the connection piece is broken when the lid is opened. However, when the aluminum laminated sheet was broken, the multiple broken pieces were larger than expected. Questions that require force, especially at the beginning of the second stage, require a large amount of operating force. There was a problem.

[0008] In other words, in the conventional technology, six connecting pieces were provided symmetrically and at equal central angles. is the first stage of the lid opening operation, as shown in characteristic curve b showing the lid opening characteristics in Figure 5. The first stage requires 2.47Kgf of operating force, and the second stage requires 7.12Kgf of force at the beginning. The operating force required to open the package is nearly three times that of the first stage. Compared to the operating force required to break the last part of the Lumi laminated sheet, 1.78Kgf. There was a problem in that all values were extremely large, and the actual opening operation did not feel good.

[0009] Therefore, the present invention was devised to solve the problems in the conventional technology mentioned above. This is the reason why a large opening operation force is required at the beginning of the second stage of the opening operation. At the beginning of the second stage, the entire ring plate is tilted upward relative to the assembled cylinder piece. The aluminum laminated sheet has begun to break, and the first pair of connection pieces has broken. Focusing on the fact that this is necessary, we have increased the opening force required to break the connection piece. The technical challenge is to reduce the amount of damage, so that the lid can be opened with a small amount of force. The aim is to be able to achieve this with a good feel.

0010

[Means to solve the problem]

The means of the present invention to solve the above technical problems are as follows: a claw piece whose tip edge is a pointed barb and is integrally provided with a handle piece that extends rearward; A ring plate with this claw piece integrally formed at the tip and a continuous connection on the periphery of this ring plate. There is an assembled tube piece that fits on the rim of the opening of the container, and this assembled tube piece is attached to the circumference of the ring plate. In order to connect to the edge, there are a plurality of asymmetrically located between the assembled cylinder piece and the ring plate. having a lid body made of synthetic resin consisting of a connection piece that is easy to break; It is located to cover the entire lower surface of the lid body, and is located between the lower surface of the ring plate of the lid body and the assembled cylinder piece. It has an aluminum laminated sheet that is closely welded to the bottom surface and the entire circumference of the opening rim of the container. thing, It is in.

[0011] Three connecting pieces are provided, and the first connecting piece is located close to the front edge line on one side of the left and right side of the claw piece. and position the second connecting piece on the other side of the left and right side with a center angle of 90° in the front-rear direction. Furthermore, the third connecting piece is oriented at an angle of 90° or more to each of the first and second connecting pieces. It is best to position it at the top center corner.

0012 In addition, the claw piece and the ring plate body are bent in a position perpendicular to the front-rear direction. It is best to connect them through a groove.

[0013]

[Effect]

The entire periphery of a container containing food must be tightly fused to the entire periphery of the opening rim of the container. The aluminum laminated sheet that seals this container is held tightly. The laminated sheet can be applied through this aluminum laminated sheet or directly to the opening rim of the container. Mechanically protected by a welded lid body.

[0014] To open the container, hook the handle piece onto your fingertip and pull up, then remove the nail piece. The connecting part with the main plate body is used as a fulcrum for tilting downward displacement, and the tilting downward displacement of this claw piece As a result, the tip edge of the claw breaks the aluminum laminated sheet directly below. child The first stage of the rupture of the aluminum laminated sheet is when the connecting part of the claw piece with the ring plate body is This is achieved by tilting using the lever action, so the first aluminum laminated sheet Despite the breaking action, the aluminum laminated sheet can be broken with a relatively weak operating force. Can be done.

[0015] In addition, if a bending groove is formed in the connecting part between the claw piece and the ring plate body, this bending groove can be prevented. Since the groove part is easily bent and deformed, it is easy to tilt and displace the claw piece with respect to the ring plate body. Since the two bending grooves provide a rotation axis for the tilting displacement of the claw piece with respect to the ring plate body, the claw piece The tilting displacement will be accurate.

[0016] Following the first stage of breaking the aluminum laminated sheet by this claw piece, the handle In the second stage of breaking the aluminum laminated sheet by continuing to pull up the piece, this ring plate The lifting force acting on the The aluminum laminated sheet part is ruptured by concentrating its action on the top part.

[0017] The second aluminum laminated sheet is made by tilting this ring plate upward relative to the assembled cylinder piece. In the staged breaking operation, the breaking force acts equally on the left and right aluminum laminated sheet parts. However, at the beginning of this second stage of breakage, the nail piece is The aluminum laminated sheet part, excluding the opposing parts, connected the ring plate and the assembled cylinder piece. Since the ring plate is in this condition, the upward tilting of the ring plate relative to the assembled cylinder piece does not tilt to the left or right. will be achieved.

[0018] At this time, since the multiple connection pieces are arranged asymmetrically, the one closest to the claw piece The connection piece that is located is only on one side, either the left or right, and the ring plate that tilts and rises. Since it is regulated to tilt its posture from side to side with respect to the assembled cylinder piece, A portion of the pulling force acting on the ring plate is applied to the one located closest to this claw piece. It acts concentratedly on the connecting piece, and breaks this connecting piece with a relatively weak force.

[0019] There is a second stage of rupture of the aluminum laminated sheet part between the ring plate and the assembled cylinder piece. As the degree progresses, the angle of inclination of the ring plate with respect to the assembled cylinder piece increases, so The lifting force acting on the holding plate effectively breaks the aluminum laminated sheet part. Therefore, the subsequent breakage of the aluminum laminated sheet part is caused by a relatively weak pulling force. It will be achieved.

[0020] In addition, in the second step of the opening operation by breaking the aluminum laminated sheet mentioned above, Even though it is easy to break, it requires a relatively large operating force to break the connection piece. Therefore, the number of connecting pieces is determined so that the mutual posture of the ring plate and the assembled cylinder piece can be stably aligned. It is desirable that the number of connection pieces be as small as possible within the range that can be maintained at a constant level. The number of connecting pieces is preferably three, arranged at a central angle of 90° or more, and the first connecting piece Connect the remaining two connections so that they are located closer to the front edge line on either side of the claw piece. Place one of the pieces on the other side of the center angle of 90° with respect to the front-back direction. It's good.

[0021] In this way, by setting the number and arrangement of the connecting pieces, it is possible to To increase the distance along the front-rear direction between the connecting piece being located and the next closest connecting piece. , and thus the connection piece closest to the claw piece at the beginning of the second stage of rupture. This increases the concentration of rupture force at the beginning of the second stage of rupture. It is possible to further reduce the operating force required to apply the

[0022]

【Example】

Embodiments of the present invention will be described below with reference to the drawings. The container 16 is made of synthetic resin and has a bottom, with a bottom wall 18 connected to the lower end of a cylindrical wall 17. The lid 1 of the present invention, which has a cylindrical shape, is tightly fitted and assembled onto the rim of the opening of this container 16. be kicked.

[0023] The lid body 2 of the lid body 1 connects a ring plate 5 having a claw piece 7 and an assembled cylinder piece 12 with a connecting piece 11. The ring plate 5 is an integral piece made of synthetic resin that is connected in series with a top plate that is approximately half-ring plate-shaped. From the outer periphery of 3, the outer flange is passed through a vertical wall piece 4 in the form of a short semi-cylindrical piece with an extremely low height. The ring plate 5 has an assembly connected to the outer peripheral edge of the ring plate 5 via a connecting piece 11. The cylindrical piece 12 has a lid attached to the upper end of the inner cylindrical part, which has a narrow inner flange piece attached to the lower end of the inner peripheral surface. The outer cylinder part is connected to hang down through the narrow outer flange piece located at the uppermost part of the main body 2. It has a double cylinder structure, and the opening edge of the container 16 is firmly secured between the inner cylinder part and the outer cylinder part. By fitting the lid 1 into the container 16, the lid 1 is fitted into the container 16.

[0024] Since the top plate 3 is approximately in the shape of a half-ring disk, there are five ring plates connected to the claw pieces 7. The front half of the body is shaped like a thin ring plate with a cavity 13 formed inside. Therefore, it is easy to bend and deform in the vertical direction, and the top plate 3 and ring plate 5 are A window hole 14 is provided at the rear end of the connecting vertical wall piece 4, and the lid body 2 and the aluminum laminated Water accumulated between the seat 15 and the seat 15 can be discharged.

[0025] The claw piece 7 formed at the tip of the ring plate 5 has a second-class shape with a pointed tip 8. It has a triangular plate shape, and the left and right sides of the rear edge, which are connected to the main body of the ring plate 5, are The side portions are provided to facilitate tilting and downward displacement of the claw pieces 7 relative to the ring plate 5 body. In order to make the downward tilting displacement stable and constant, the tilting movement of the claw piece 7 is controlled. A bending groove 6 that provides an axis is formed along a direction perpendicular to the front-rear direction, Further, at the center of the rear edge of this claw piece 7, a fingertip is provided at the center of the tip extending through the stepped part 9. Fit the handle piece 10, which has a through hole for hanging it, into the center part of the top plate 3. It extends backwards.

[0026] A slight gap is created between the outer circumferential edge of the ring plate 5 and the inner circumferential edge of the assembled cylinder piece 12, Three connecting pieces 11 are provided to connect the ring plate 5 and the assembled cylinder piece 12. The first connecting piece 11 is located near the tip edge of one side of the inclined linear shape of the claw piece 7. The second connecting piece 11 is located on the other side at a central angle of 90° with respect to the front-rear direction. The third connecting piece 11 is located on one side opposite to the claw piece 7.

[0027] In other words, the three connecting pieces 11 are adjacent to each other at a center angle of 90° or more, so that Connecting the ring plate 5 to the assembled cylindrical piece 12 by the connecting piece 11 with a smaller number of connecting pieces 11 The posture should be stable, and the second connecting piece 11 should be at a central angle α in the front-rear direction. That is, the first connecting piece 11 is located at a central angle of 90°, whereas the first connecting piece 11 is located at a central angle of 90°. Since it is located at a sufficiently small center angle β, the aluminum plate 5 is tilted upward. At the beginning of the second stage of breaking the laminated sheet 15, a breaking force is applied to this first connection piece 11. You can concentrate well.

[0028] The aluminum laminated sheet 15, which forms the lid body 1 in combination with the lid body 2, has a peripheral edge thereof. The entire lower surface of the ring plate 5 including the claw piece 7 and the entire lower surface of the inner cylinder of the assembled cylinder piece 12 and is tightly welded to the entire inner peripheral surface, and for the container 16, it is fitted with the assembled cylindrical piece 12. The outside of the part welded to the inner circumferential surface of the inner cylinder part of the assembled cylinder piece 12 is applied to the entire inner circumferential surface of the opening rim. The circumferential surface is tightly welded, thereby achieving sealing of the container 16.

[0029] In addition, the tight welding of the aluminum laminated sheet 15 to the lid body 2 and the container 16 is achieved by ultrasonic This is advantageously achieved using wave welding means.

[0030] To open the bag by pulling up the handle piece 10, as shown in FIG. Pulling operation A diagonally forward and upward using the axis of rotation, that is, the aluminum laminated sheet Due to the first stage of breaking the 15 parts, the 15 parts of the aluminum laminated sheet directly below are damaged by the piercing 8. After the nail piece 7 is pierced and broken, it is cut directly below along the straight edge of the claw piece 7 that slopes to the left and right. Break 15 parts of the aluminum laminated sheet, then pull up the handle piece 10 diagonally backwards and upwards. By the second stage of breaking operation B, that is, the breaking of 15 parts of the aluminum laminated sheet, the ring plate is 5.Place the aluminum laminated sheet 15 part between the main body and the assembled cylinder piece 12 from the front side to the rear side. The container 16 is opened by breaking the container 16 in order.

[0031] At the beginning of the second stage of the aluminum laminated sheet 15 partial breakage of this container 16 opening operation, Since the first half of the ring plate 5 that is continuous with the claw piece 7 has a simple flat plate structure, the handle Due to the action of pulling force through the piece 10, it is easily bent upwards, which causes the aluminum stack to The pulling force is concentrated as a breaking force on the part where the layer sheet 15 is breaking and the first connection piece 11. A small pulling force was applied to break the 15 parts of the aluminum laminated sheet and the first connection piece 11. to achieve this easily, reliably, and in a stable manner.

[0032] FIG. 5 shows the opening operation characteristics of the embodiments of the present invention shown in FIGS. 1 to 4. Characteristic curve a of the conventional technology with six connecting pieces symmetrically provided, and characteristic curve b of the conventional technology. are shown side by side, and according to actual measurements, the pulling force as the opening force required for operation A is is 2.47Kgf in the conventional example, while it is the same in the case of the present invention as 2.47Kgf. However, the pulling force at the beginning of operation B is 7.12 kgf in the conventional example. In contrast, in the case of the present invention, it is small at 5.56Kgf, and there is no residue left at the final stage of opening. The pulling force required to break the aluminum laminated sheet part was 1.78 in the conventional example. Kgf, whereas in the case of the present invention it was the same as 1.78 Kgf.

[0033] Based on this, the present invention can increase the maximum value of the opening force by the difference S, compared to the conventional example. S=7.12-5.56=1.56 can be made smaller, which means less force is required to open the package. Reduce the difference between the initial operating force for operation B and the operating force for operation A and the final operation. This reduces the degree to which the package gets caught during the opening operation. It is light and has an extremely good feel when opening the package.

[0034]

[Effect of the idea]

Since the present invention has the above-described configuration, it has the following effects. Multiple connection pieces are arranged asymmetrically with respect to the front-rear direction where the unsealing operation force is applied. Therefore, the second stage of breaking the aluminum laminate sheet after breaking the aluminum laminate sheet with the nail piece was At the beginning of the disconnection operation, part of the unsealing operation force is concentrated on one connection piece, so this maximum Reduce the operating force at the beginning of the second-stage breaking operation, which requires a high operating force. This reduces the overall operating force required to open the package, making the opening process itself easier. It can be made easier to achieve.

[0035] It is possible to reduce the operating force in the opening operation process, which requires the largest operating force. This reduces the degree of change in operating force from the start of opening to the completion of opening. This will reduce the feeling of getting stuck when actually opening the package. This allows for a smooth and stable opening operation, as well as a good opening feeling. You can get touch.

[0036]

[Brief explanation of drawings]

FIG. 1 is an overall plan view showing an embodiment of a lid according to the present invention.

FIG. 2 is a longitudinal sectional side view of the embodiment shown in FIG. 1 taken along line A--A in FIG. 1;

FIG. 3 is an overall vertical sectional side view of the embodiment shown in FIG. 1 in a state where it is assembled into a container.

FIG. 4 is an explanatory sectional view showing the procedure for opening the lid body according to the present invention.

FIG. 5 is a characteristic diagram showing the opening operation force characteristics of the embodiment of the present invention shown in FIG. 1 and the opening operation force characteristics of the conventional example.

[0037]

[Explanation of symbols]

1; Lid body 2; Lid body 3; Top plate 4; Standing wall piece 5 ; Ring plate 6 ; Bend groove 7; Claw piece 8; Piercing 9; Stepped portion 10; Handle piece 11; Connection piece 12; Assembled cylinder piece 13; Vacancy 14; Window hole 15; Aluminum laminated sheet 16; Container 17; Peripheral wall 18; Bottom wall

Claims (3)

[Scope of utility model registration request] [Claim 1] A ring plate (5) whose distal end is integrally formed with a claw piece (7) whose distal edge is a pointed barb (8) and which is integrally provided with a handle piece (10) that extends rearward. ) is made of synthetic resin, in which an assembled cylinder piece (12) that fits on the mouth edge of the container (16) is connected via a plurality of asymmetrically located connecting pieces (11) that are easy to break. It is located to cover the entire lower surface of the lid body (2) and the lower surface of the ring plate (5), the lower surface of the assembled cylinder piece (12), and the entire mouth edge of the container (16). A lid for a food storage container consisting of an aluminum laminated sheet (15) that is closely welded to the surrounding surface. [Claim 2] Three connecting pieces (11) are provided, and the first connecting piece (1
1) near the front edge line on either left or right side of the claw piece (7),
The second connecting piece (11) is located on the other side of the left and right side making a center angle of 90° with respect to the front-rear direction, and the third connecting piece (11) is located between the first and second connecting pieces (11). 90 for each
The lid for a food storage container according to claim 1, wherein the lid is positioned at a central angle of .degree. or more. [Claim 3] The claw piece (7) and the ring plate (5) main body are connected to each other via a bending groove (6) formed at right angles to the front-rear direction. Lid for food storage containers.