JPH0523485Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a sealed plastic container that is used, for example, in a lunch box carried when commuting to kindergarten or school.

BACKGROUND TECHNOLOGY Conventionally, in order to prevent the contents from leaking out of the container, containers of this type have integrally molded a bearing part along the outer periphery of the lid, as shown in Japanese Utility Model Application Publication No. 60-4449, for example. , by overlapping both ends of a clamp lever for opening and closing the lid on the bearing part, and passing the mandrel through a shaft hole that is common to both ends of the clamp lever and the bearing part, There is one in which the above-mentioned clamp lever, which tightens the container body and the lid, is rotatably supported.

In addition, as in Japanese Utility Model Application Publication No. 58-5948, in the bearing hole that opens on the side of the bearing part that is integrally formed with the lid,
There was also one in which shaft parts formed at both ends of a clamp lever made of metal wire were fitted.

In addition, as in Utility Model Application Publication No. 7177 of 1945, a bearing part with semicircular bearing grooves at both ends is provided on the side of the container body as a hinge device between the container body and the lid. A protruding portion having shaft portions facing each other is provided on the side surface, and a cover member having a shaft hole having a semicircular cross section is placed so as to cover the shaft portion placed in the bearing groove and the upper surface of the bearing portion. There was also a device in which the bearing part was covered by screwing a set screw inserted from the lower surface of the bearing part into a female screw seat protruding from the back surface of the member.

Problems to be Solved by the Invention In the above-mentioned conventional sealed container, the shaft portion that serves as the rotational fulcrum of the clamp lever and its bearing are exposed on the side of the bearing portion, so water that has passed down the lever can easily enter the bearing. There are drawbacks such as the possibility of intrusion and unsanitary conditions, the large number of parts, and the large amount of effort required to attach the lever.The bearing structure of the clamp lever in this type of sealed container has been improved. Therefore, it has been a challenge to minimize the number of parts to make it easier to install the clamp lever, and to improve the adhesion between the parts so that they can be used hygienically.

On the other hand, in the conventional hinge structure, the bearing part and the cover member are connected by screws, so the screw head is exposed on the back side, and the joint between the bearing part and the cover member is exposed on the side face, which spoils the appearance. Moreover, there are technical difficulties in using the screw-fastening structure for plastic products. In addition, fixing the cover with screws is a structure that is difficult to adopt for containers such as lunch boxes that are frequently washed with water, as it tends to cause distortion in the joint surfaces and become unsanitary.

In addition, as in Publication of Utility Model Publication No. 53-483 or U.S. Patent No. 3,384,208, a hollow latching part is provided in the bearing part, and an arrow-shaped latching protrusion is inserted, thereby eliminating the need for screws. Some did, but
These structures also lacked watertightness and could not be immediately adopted as containers for lunch boxes.

Means for Solving the Problems Therefore, the present invention provides bearing grooves having a semicircular cross section at both ends along the sides of the lid, which is also made of plastic and is superimposed on the top surface of the container body made of plastic. It has oblong latching holes provided vertically along the sides and rectangular latching holes extending through it, and has a notch-shaped latching part on the lower edge of the side surface, which protrudes into an approximately rectangular shape. A plastic clamp lever is mounted by integrally molding a bearing part with a shaft part that protrudes from both ends facing each other into the bearing groove, and the upper surface of the bearing part and the shaft part of the clamp lever are placed on top of each other. A plastic cover member formed into an L-shaped cross section is placed to cover the side surface, and the shaft portion is rotatably supported between the inner surface of the cover member and the above-mentioned bearing groove, and the clamp lever is rotated on the bearing portion. A latching piece that can be attached freely and has a horizontally long latching piece formed vertically along the front edge of the cover member, and a latching piece that is formed into a bifurcated shape by cutting off the center part from the lower end and has non-return claws that protrude on both sides. The pieces are elastically fitted into the latching holes of the bearing part, respectively, and the latching pieces, which also protrude inward from the lower edge of the cover member, are elastically fitted into the latching parts of the lower edge of the bearing part. The L-shaped inner surface of the cover member and the upper and side surfaces of the bearing part are fitted in close contact with each other. A plastic container characterized in that a clamp edge provided at the front end of the upper surface of the edge is engaged from below with the upper edge of the container body formed in an inverted U shape to tighten the container body and the lid together. The present invention provides a sealed container with a lid.

Function The present invention configured as described above includes a container body made of a plastic molded product, a lid having a bearing part, a clamp lever having a shaft part, and a cover member that covers the bearing part and the shaft part of the clamp lever. Consisting of 4 parts, the bearing part of the clamp lever can be assembled in one step. In other words, the shaft of the clamp lever is placed over the bearing groove of the bearing, the cover member is placed on top of that, and the horizontally long locking piece on the front edge and the locking piece with the non-return claw are attached to the side of the lid. In parallel with the fitting operation in which the cover member is fitted into horizontally elongated latching holes provided perpendicularly along the latching holes and rectangular latching holes passing through the cover member, the elasticity of the cover member having an L-shaped cross section is used to expand the cover member. This is done in a nearly one-touch manner in which the locking pieces protruding inward from the lower edge of the cover member are fitted into the locking portions on the lower edge of the bearing and are respectively locked.

The shaft portion of the clamp lever is held between the bearing groove of the bearing portion and the inner surface of the cover member having an L-shaped cross section, is rotatably supported, and is shielded by the surface of the cover member. Ru.

By joining the lid, clamp lever, and cover member together in this way, the shaft hole, etc. is not exposed on the surface, and the front edge and lower edge of the L-shaped cross section of the cover member are separated from each other. Each of the protruding hook pieces utilizes the elastic restoring force of the cover member,
Since it is assembled in a square shape with one corner of the lower side of the square missing in a bearing section that is approximately square in cross section, the connection is strong and the parts have high adhesion to each other.

Furthermore, the clamp edge provided on the front edge of the upper surface of the latching edge that protrudes along the length direction of the inner surface of the clamp lever is attached to the upper edge of the container body, which is formed in an inverted U shape, in a click motion. Since the lid engages elastically from the bottom side, the lid can be easily clamped and tightened stably, and it can also be easily opened from the container body.

The present invention solves the conventional problems associated with sealed containers as described above.

Embodiments Examples of the present invention will be described below with reference to the drawings.

In the figure, A is a container body, B is a lid that is superimposed on the top surface of the container body A, and C is a packing material that fits on the back surface of the peripheral edge of the lid B and presses against the upper edge a of the container body A. Both the container body A and the lid B are made of plastic and are shaped into rectangles with rounded corners.

The lid B has bearing portions 1 integrally formed and having a substantially rectangular cross section along both long sides.

The bearing part 1 has a bearing groove 2 with a semicircular cross section formed at each end, and a shaft part 4 protruding oppositely from both ends is stacked on the bearing part 1, and a plastic clamp lever 3 is placed thereon. do. Moreover, this bearing part 1 has horizontally long latching holes 7 vertically provided along the sides of the lid B, and rectangular latching holes 7'' passing through the lid B.
The lower edge of the side surface is provided with a notched hook 7'.

Reference numeral 5 designates a plastic cover member formed to have an L-shaped cross section so as to cover the upper and side surfaces of the bearing portion 1 together with the shaft portion 4 of the clamp lever 3.

The cover member 5 includes horizontally long latching pieces 6 formed vertically along the front edge, and a latching piece that is formed into a bifurcated shape by cutting off the center part from the lower end and has non-return claws protruding from both sides. 6'' are elastically fitted into the latching holes 7 and 7'' of the bearing part 1, respectively, and the latching pieces 6', which also protrude inward from the lower edge, are attached to the lower edge of the bearing part 1. By elastically engaging the retaining portion 7', the bearing portion 1 is covered, and the shaft portion 4 of the clamp lever 3 is freely rotatable between the inner surface of the L-shaped cross section and the bearing groove 2 of the bearing portion 1. It supports the shaft and shields the bearing portion with its surface.

The clamp lever 3 is attached to the lid B in the above manner.

The connection between the bearing part 1 and the clamp lever 3 by the cover member 5 is performed on the upper surface of the overlapping bearing part 1, with each of the latching pieces 6, 6'' on the front edge and the latching hole 7 on the bearing part 1 side. In parallel with fitting into the latching hole 7″,
While expanding the cover member 5 in an obtuse angle direction by utilizing the elasticity of the cover member 5 having an L-shaped cross section, a hooking piece 6' on the cover member 5 side protruding inward from the lower edge is provided in the shape of a notch. By fitting into the locking portion 7' on the bearing portion 1 side and elastically returning the cover member 5, it is possible to perform the operation with almost a one-touch operation.

In addition, the lower end of the latch piece 6'' on the front edge of the cover member 5 is compressed from both sides when it is fitted into the rectangular latch hole 7'', and returns to its original position at the same time as it passes through the latch hole 7''. Since it is reverse-locked to the back surface of the hole 7'', the cover member 5 is brought into closer contact with the bearing portion 1 side. Further, the above-mentioned locking piece 6'' with a non-return claw cooperates with the fitting between the locking piece 6' and the locking part 7' at the lower edge of the bearing part 1, and fixes the cover member 5 upwardly so that it is difficult to remove. .

As mentioned above, this hooking piece 6'' is attached to the cover member 5.
Utilizing the flexibility of the plastic product, use pliers or the like to hold the tip of the hooking piece 7'' on the back side, and while pushing it up, expand the cover member 5 with the other hand. It is also possible to disassemble the device without damaging it by removing the locking piece 6' from the lower edge on the bearing portion 1 side.

The clamp lever 3 attached as described above is formed into a horizontally elongated U-shape with the shaft portions 4 facing each other on the upper side, and as shown in FIG. The clamp edge b, which has a locking edge 8 that projects inward and is provided at the front end of the upper surface of the locking edge 8, is clicked from below onto the upper edge a of the container body A, which is formed into an inverted U shape. The lid B is tightened to the container body A via the bearing part 1 while compressing the packing member C by engaging the lid B with the bearing part 1.

The height of the clamp edge b is set to a very small height as shown in the figure, so it can be easily clamped due to the elasticity unique to plastic, and it can be hung by entering inside the upper edge a of the container body A. The upper surface of the sealing edge 8 and the lower edge of the upper edge part a come into close contact, and the tightness that keeps the container sealed is stable. Moreover, opening from the container body A can be made easier.

Effects of the invention As described above, the present invention consists of four parts, each made of plastic: the container body, the lid, the clamp lever, and the cover member, which eliminates the use of metal products, creates a product that does not rust, and is suitable for washing with water. At the same time, the number of parts is small and the number of steps and labor required for assembly is also small.

In addition, semicircular bearing grooves are provided at both ends of the bearing part that is integrally molded along the side surface of the lid.
A clamp lever is placed with the shaft portions protruding from opposite ends stacked on top of each other, and the shaft portion and the bearing portion are covered with a cover member having an L-shaped cross section, and the shaft portion is placed between the inner surface of the cover member and the bearing groove of the bearing portion. Since it is rotatably supported on a shaft, it is easy to install the crank lever that rotatably tightens the lid, and the shaft support is shielded by the cover member from two directions, the top and the side, so that the overlapping surface is hidden, giving an elegant appearance and preventing the intrusion of washing water, etc.

Furthermore, the cover member that covers the bearing part has horizontally long hanging pieces formed vertically along the front edge of the cover member.
A latching piece formed in a bifurcated shape and equipped with non-return claws on both sides of the lower end is elastically inserted into a horizontally long latching hole provided vertically along the side of the lid and a rectangular latching hole that passes through it. Since the locking pieces protruding inwardly from the lower edge of the cover member are elastically hooked to the locking portions on the lower edge of the bearing, the cover member can be attached in one-touch manner, and Since it is fitted in a rectangular shape with one corner of the lower side missing on the bearing part, which has a nearly square cross section, it has good adhesion to the bearing part.
The latching piece with a non-return claw also works as a fitting latching action, so it is firmly fixed in any direction, up, down, left or right, and there is little chance of water or fine dust getting into the joint with the bearing. This allows for sanitary use of sealed containers mainly used for food containers such as lunch boxes. In addition, by pinching the lower end of the latch piece equipped with a non-return claw with pliers, etc., and expanding the cover member using its elasticity, each latch piece is disengaged, and the cover member is attached to the bearing. It is also possible to disassemble it from part to part.

Furthermore, in the present invention, the crank edge protruding along the length direction from the inner surface of the clamp lever is engaged with the upper edge of the inverted U-shaped container body to tighten the container body and the lid. , the container can be kept tightly sealed, and opening and sealing operations can be performed easily.

The present invention has excellent practical effects as described above.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway exploded perspective view showing an embodiment of the present invention, and FIG. 2 is a vertical sectional elevation view when one crank lever is tightened. A... Container body, a... Upper edge, B... Lid, C
... Packing member, 1 ... Bearing section, 2 ... Bearing groove, 3 ... Clamp lever, 4 ... Shaft section, 5 ......
Cover member, 6...hanging piece, 6'...hanging piece,
6″...Latching piece, 7...Latching hole, 7'...Latching part,
7″...Latching hole, 8...Latching edge, b...Clamp edge.

Claims (1)

[Scope of utility model registration request] Bearing grooves 2 having a semicircular cross section are provided at both ends along the sides of a lid B, also made of plastic, which is superimposed on the top surface of the container body A made of plastic, and are provided vertically along the sides of the lid B, respectively. The bearing part is provided with a horizontally elongated latching hole 7 and a rectangular latching hole 7'' extending through it, and a latching part 7' formed in a notch shape at the lower edge of the side surface, protruding into a substantially rectangular shape. A clamp lever 3 made of plastic is placed on the bearing shaft 2 with a shaft portion 4 which is integrally molded and has opposite ends protruding from both ends. A plastic cover member 5 formed into an L-shaped cross section is placed so as to cover the top and side surfaces of the shaft 4, and the shaft portion 4 is rotatably supported between the inner surface and the bearing groove 2 and covered in a hermetically sealed manner. A clamp lever 3 is rotatably attached to the bearing part 1, and a horizontally long hanging piece 6 is formed vertically along the front edge of the cover member 5, and a two-pronged hanging piece 6 is formed on both sides by cutting off the central part from the lower end. A locking piece 6″ having a non-return claw protruding from the bearing portion 1
The latching pieces 6', which are elastically fitted into the latching holes 7 and 7'' of the bearing part 1 and protrude inwardly from the lower edge of the cover member 5, are elastically fitted into the latching holes 7 and 7'' of the bearing part 1. ' of the cover member 5.
A clamp is provided at the front end of the upper surface of the latching edge 8 that protrudes along the length direction of the inner surface of the clamp lever 3, while the inner surface of the shape and the upper surface and side surface of the bearing part 1 are fitted closely together. A seal with a plastic lid characterized in that the edge b is configured to engage the upper edge a of the container body A formed in an inverted U shape from below, thereby tightening the container body A and the lid B to each other. container.