JPH0248322Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a lid tightening device for fitting a lid onto a container body.

[Conventional technology]

Plastic containers for food packaging, in which the peripheral wall of a recess formed in the lid fits inside the opening of the container body, are usually used for the purpose of maintaining airtightness and preventing the lid from separating during transportation. The outer diameter of the circumferential wall of the recess is larger than the inner diameter of the opening of the container body, or the fitting portion of the two is tapered downward. Therefore, when attaching the lid to the container body, it is necessary to press fit the peripheral wall of the concave portion of the lid into the opening of the container body, making attachment of the lid time-consuming.

Japanese Utility Model Publication No. 51-32751 discloses that a cylindrical protrusion is formed on the lower surface of the elevator plate, and a slideable presser plate placed inside the cylindrical protrusion is pressed downward by a spring, and the above-mentioned elevator A cup lid holding device is disclosed in which the lid is attached to the container by pressing down the center portion of the lid placed on the opening of the container using a pressing plate that descends with the disc.

[The problem that the idea aims to solve]

However, in the above device, the central part of the lid is pressed down by a presser plate, so the circumferential wall of the recess of the lid fits into the opening of the container all around at the same time, and the lid is press-fitted. In containers that need to be attached by screws, a poor fit may occur, and air may be trapped inside the container.

Therefore, this idea solves the above disadvantages,
The technical problem is to make it possible to attach the lid extremely easily and reliably while eliminating air inside the container body.

[Means to solve the problem]

In order to solve the above problems, this invention provides a cylindrical container holder that can support the flange formed at the opening edge of the container body on a support base, and is arranged on the support base so that the end The upper part of the roller arm is connected to the middle of the rotatably supported operating lever, and the rotation of the roller arm in one direction is restricted, and a lid tightening roller is attached to the lower end of the roller arm when the operating lever is pressed down. A stopper is provided for regulating the posture of the roller arm so that it comes into contact with one end on both sides of the upper surface of the container receiver, and a spring is provided for deflecting the roller arm toward the stopper. The structure includes a pressing member that presses and deforms the central portion of the lid placed above downward.

[Effect]

In the device configured as described above, the flange formed on the opening edge of the container body is supported by the upper end of the container receiver, and when the lid is placed on top of the flange and the operating lever is pushed down, the flange attached to the lower end of the roller arm is A pair of lid tightening rollers pressurizes one end on both sides of the upper surface of the lid, and the peripheral wall of the recessed portion of the lid at the pressurized portion is fitted inside the opening of the container body. When the operating lever is pushed down further, the roller arm rotates and the lid tightening roller begins to roll from one end to the other while pressing both sides of the top of the lid, and in the middle of rolling, the pressing member presses against the top of the concave part of the lid. Pressurize and deform downward. Therefore, the circumferential wall of the concave portion of the lid is slightly displaced in the opposite direction, making it easier to fit inside the opening of the container body, and in this state, the lid tightening roller moves on both sides of the lid from one end to the other, so that the lid The entire circumferential wall of the recess is fitted inside the container body, and the lid tightening operation is completed.

〔Example〕

As shown in FIGS. 1 to 3, a cylindrical container holder 2 is detachably attached to the upper surface of the support base 1 by tightening bolts 2', and the upper end of the container holder 2 is attached to the container body. Flange B of A is supported. Further, a support piece 3 stands up on one side of the upper surface of the support base 1, and the ends of a pair of side frames 5, 5 of the U-shaped operation lever 4 are connected to the support piece 3 by a pin 6.

An upper end of a roller arm 7 is connected to the center of each side frame 5 of the operating lever 4 by a pin 8, and a lid tightening roller 9 is connected to the lower end of each roller arm 7.
is rotatably supported. Further, a projecting piece 10 is attached to the side frame 5 on the pin 6 side from the connecting position of the roller arm 7, and a stopper 11 for restricting rotation of the roller arm 7 in one direction is attached to the projecting piece 10. It is provided so that its position can be adjusted.

The spring 12, which is stretched between the midway of the roller arm 7 and the support piece 3, deflects the roller arm 7 toward the stopper 11.
When the operating lever 4 is pushed down in a state in which the roller arm 7 is in contact with the container receiver 2, the lid tightening roller 9 is brought into contact with one end of both sides of the upper surface of the container receiver 2. At this time, roller arm 7
is inclined with respect to a vertical line, and can be rotated in a direction away from the stopper 11 by further pushing down the operating lever 4.

Furthermore, a bar 13 is provided on the side frame 5 of the operating lever 4 from the connecting portion of the roller arm 7 to the operating section side of the operating lever 4, and a block 14 is rotatably supported at the center of the bar 13. ing. A rod 15 is supported by the block 14 so as to be slidable in the vertical direction, and is pushed downward by a spring 16 fitted to the outside of the rod 15.

The rod 15 has a head 1 formed at its upper end.
7 prevents it from coming off. Further, a plate-shaped pressing member 18 is rotatably supported at the lower end of the rod 15 via a pin 19.

The pressing member 18 is preferably provided with a protrusion 20 on its lower surface in order to pressurize and deform the center portion of the upper surface of the lid C placed on the container body A when the operating lever 4 is pressed down.

The lid tightening device shown in the embodiment has the above-mentioned structure, and this lid tightening device supports the flange B of the container body A at the upper end of the container receiver 2, and after placing the lid C on it, operates the operation lever 4. Attach the lid C to the container body A by pressing down.

Here, as shown in FIG. 1, the container to be capped has an outer cylindrical portion E formed on the outside of the concave peripheral wall D of the lid C, and an outer cylindrical portion E formed on the inside of the outer cylindrical portion E at the opening edge of the container body A. The flange B and the bent piece F formed on the outer periphery of the flange B are fitted together, and the outer diameter of the recessed peripheral wall of the lid is larger than the inner diameter of the opening of the container body. Either one may be used, such as one that is press-fitted inside the opening of the container body, or one that has the outer circumferential surface of the peripheral wall of the recess of the lid and the inner circumferential surface of the opening of the container body each formed into a tapered surface that widens downward. Further, the shape of the container may be round, square, or the like.

Now, if the flange B of the container body A is supported by the upper end of the container holder 2, and the lid C is placed on top of the flange B, and the operating lever 4 is pushed down, as shown in FIG.
The lid tightening roller 9 at the lower end of the roller arm 7 pushes down one end of the lid C, and a portion of the recess peripheral wall D fits inside the opening of the container body A. When the operating lever 4 is further pushed down, the roller arm 7 rotates around the pin 8 against the elasticity of the spring 12, and the lid tightening roller 9 presses against both sides of the upper surface of the lid C, and from one end As it begins to roll toward the other end, the pressing member 18 comes into contact with the upper surface of the concave portion of the lid C, pressurizes that portion, and deforms it downward as shown in FIG. Therefore, the concave peripheral wall D of the lid C is slightly displaced inward and becomes easier to fit inside the container body A. In this state, the lid tightening roller 9 moves from one end to the other on both sides of the upper surface of the lid C, and the entire concave peripheral wall D fits inside the container body A, completing the lid tightening work (see Figure 3). .

In the embodiment shown in FIG. 1, a plate-shaped pressing member 18 for pressing and deforming the lid C is provided at the lower end of the rod 15 that is supported so as to be movable up and down. but not limited to.

For example, as shown in FIGS. 4 and 5, the upper part of the arm 21 is connected to the side frame 5 of the operating lever 4, and the pressing member 18 made of a roller is attached to the lower part of the arm 21, and the operating lever 4 is pushed down. The pressing member 18 may be pressed against the upper surface of the lid C to deform it under pressure, and in this state, the pressing member 18 may be made to precede the lid tightening roller 9.

Note that 22 represents a stopper that limits rotation of the arm 21 in one direction, and 23 represents a spring that deflects the arm 21 toward the stopper 22.

By adopting the above-mentioned support method, it is possible to use a single long lid tightening roller 9 that extends between both sides of the lid C. The entire section can be pushed down.

Further, as shown in FIGS. 6 and 7, one end of a support arm 24 is rotatably connected to a support piece 3 that stands up from the support base 1, and a rectangular pressing member 18 is attached to the other end of the support arm 24. The pressing member 18 is placed on the center of the upper surface of the lid C placed on the container body A, and the shaft of the lid tightening roller 9 moves along both sides of the upper surface of the lid C from one end to the other end. The support arm 24 may be pushed down to deform the lid C under pressure.

〔effect〕

As described above, according to this invention, the flange of the container body is supported at the upper end of the container receiver, the lid is placed on top of the flange, and the lid can be tightened by a simple action of pushing down the operating lever. When the lid tightening roller moves the top surface of the lid from one end to the other end, the pressing member deforms the top surface of the lid by pressing downward and slightly displaces the circumferential wall of the recess inward. As a result of this movement, the peripheral wall of the recess fits smoothly inside the opening of the container body, and the lid can be securely closed.

In addition, since the peripheral wall of the recess of the lid is fitted in order from one end to the other, the lid can be tightened while eliminating air inside the container body, and the lid tightening roller is supported by the upper end of the container receiver. Since the flange of the container main body and the upper surface of the lid that overlap the flange are moved, the lid tightening pressure is always constant, and it is possible to prevent leakage of the filling to the outside due to over-tightening of the lid.

In addition, as in the embodiment, by detachably attaching the container receiver to the support base, it is possible to close a container of any size by replacing the container receiver.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view showing an embodiment of the lid tightening device according to this invention, Fig. 2 is a plan view of the same, Fig. 3 is a longitudinal sectional front view showing the same working state, and Fig. 4 is a longitudinal sectional front view showing an embodiment of the lid tightening device according to the invention. FIG. 5 is a longitudinal sectional front view showing another embodiment of the device according to the invention, FIG. 5 is a plan view of the same, FIG. 6 is a longitudinal sectional front view showing still another embodiment of the same, and FIG. be. DESCRIPTION OF SYMBOLS 1...Support stand, 2...Container holder, 4...Operation lever, 7...Roller arm, 9...Lid tightening roller, 11...Stopper, 12...Spring, 1
8...Press member.

Claims (1)

[Scope of utility model registration request] A cylindrical container holder capable of supporting a flange formed at the opening edge of the container body is provided on the support stand, and a roller is installed in the middle of the operating lever, which is placed on the support stand and whose end is rotatably supported. The upper part of the arm is connected, and the rotation of the roller arm in one direction is restricted so that when the operation lever is pressed down, the lid tightening roller attached to the end of the roller arm comes into contact with one end of the upper surface of the container receiver. A stopper is provided to restrict the posture of the container, and a spring is provided to deflect the roller arm toward the stopper, and the central portion of the lid placed on the container body is deformed by pressing downward in conjunction with the downward movement of the operating lever. A container lid tightening device equipped with a pressing member that