JP3071689B2 - Plastic container lid clamp - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp for a lid of a plastic container (a bottomed body having an upper opening), for example, a clamp for a lid of a plastic trash container.

[0002]

2. Description of the Related Art In recent years, beautiful and large-sized trash containers made of plastic have become available. Especially, in order to prevent crows and cats and to prevent odors, the lids must be closed and not opened unnecessarily. ing.

[0003] As one of the sealing means, there is known one in which the lid is sealed with a pair of clamps (clamps) provided on both sides of the container or the lid. The clamp-type sealing means (hereinafter, simply referred to as a clamp) is generally constituted by a curved rectangular plate (corresponding to a clamp main body) of a size that can be gripped, and the rectangular base is covered with a lid or a container. It has a structure that engages and disengages with the flange-shaped locking part (clamp receiving part) provided on the container or lid of the partner using elastic strain. It requires a slight pressing force and a pulling force just to utilize the strain.

In order to facilitate this engagement and disengagement, for example, in Japanese Utility Model Laid-Open Publication No. 4-60904, a clamp provided on a lid is constituted by a clamp having a so-called turning jaw (hook), that is, a hook having a rounded tip is used. The hook is formed at the front end side of the back surface of the rectangular plate, and is engaged with the counterpart clamp receiving portion by the elastic strain of the hook.

[0005]

However, in the case of a clamp having such a turning jaw, if the clamp is made of plastic, it is disengaged and disengaged due to the resin elastic distortion of the hook.
Clamp receiving part formed by hook of small projection and small projection,
Although it tends to be tightened at the beginning of use and requires a strong pressing force and the like, there has been a problem that the resin is deteriorated or aged after use for many years and the resin is loosened.

Accordingly, the present invention solves the common problem in a clamp having a general turning jaw (this is also referred to as a clamp with a hook in the present specification). It is not a concept to provide strength etc. to the clamp receiving part of the strip to improve durability,
Focusing on the relationship between the movement of the hook-equipped clamp and the shape of the hook and the clamp receiving portion, the hook is disengaged without using as much as possible the resin elastic strain.

[0007]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve these problems. The gist of the present invention is as follows. 1) A downward-facing piece constituting a flap formed on the outer periphery of an opening of a plastic container. The lower end side is slightly bent outward to form a clamp receiving portion, and the base of the plastic clamp body is swingably pivotally supported and hung from the opening of the plastic lid covering the container. An upwardly formed hook is integrally provided inside the distal end of the clamp body, and the hook is swung about the clamp pivot point on the clamp receiving portion, and can be disengaged without using resin elasticity. , While keeping its disengagement function constant over time,
When the hook is locked in the clamp receiving portion, the clamp body is locked in a vertical state so as not to come off spontaneously. The clamp receiver according to claim 1 is constituted by a pair of brackets integrally projecting from the flap and the side of the container body, and is used as a large trash container formed by injection molding of the plastic container. 3) The method according to claim 1 or 2, wherein
The hook has a substantially T-shaped cross section, and a small projection is provided on the side surface of the T-shaped foot portion to cause a slight resin elastic strain on the hook when brought into contact with the inner surface of the clamp receiving portion. In the clamp.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to embodiments shown in the accompanying drawings. FIG. 1 shows an embodiment of the present invention, and is a partially cut front view with a center line a as a boundary, FIG. 2 is a plan view of FIG. FIG.
4 is a partial cross-sectional view of the side view of FIG. 1; FIG. 4 is a detailed view of the main part of FIG. 1; FIG. FIG. 6 is another use state diagram of FIG. 4.

The embodiment of the present invention is a large-sized garbage container injection-molded using a thermoplastic resin such as polypropylene. The overall size is about 600 mm in front view width, about 400 mm in side view width, and high. It is about 500 mm, which is convenient for use in, for example, a business cafeteria. Therefore,
For example, a lid having a thickness of 3 mm weighs about 0.8 kg.

First, the trash container will be outlined. Mainly in FIGS. 1 and 3, the container body 1 has a rectangular shape slightly narrowed down in a front view and a side view, and has a substantially rectangular shape in a plan view. Make up. A folded peripheral edge (also referred to as a flap) 2 is formed in an upper opening of the container body 1, and the lid 3 is covered on the folded peripheral edge 2.

The lid 3 has an inverted shallow dish shape, and an annular flap 4 is formed at the opening edge. Handles 5 are integrally formed on both sides of the container body 1.
The handle 5 comprises a bracket 6 and a grip portion 7, and the bracket 6 is constituted by a pair of triangular plate members integrally projecting from the folded peripheral portion (flap) 2 and the side surface of the main body. Reference numeral 7 denotes a pipe provided at the triangular vertex of the bracket 6.

Corner recesses 2 at four corners of bottom 8 of container body 1
A caster 10 or a sliding plate (not shown) is attached to 7.

The caster 10 will be outlined. The caster 10 is a commercially available general type, and is mounted on the thick plastic mounting plate 21 which covers and is fixed to the corner recess 27. The mounting plate 21 is fitted to a leg wall 28B of the container body 1, a reinforcing rib 8A provided on the bottom portion 8, and the like, and is fixed by a plurality of push bolts 30, 30.

The caster 10 is a caster.
The position of the support shaft 33 of the wheel 32 and the caster mounting shaft (not shown) erected on the caster 10 are eccentric, and this support shaft is supported by a caster bracket 34, and the caster bracket 34 is -It is mounted on a mounting shaft so as to be freely rotatable.

Here, in this embodiment, in order to seal the lid 3, a clamp 12 with a hook made of a curved rectangular plate having a long side of 105 mm and a short side of 45 mm and made of PP injection molding as follows. Is provided.

The clamp with hook 12 is provided on the side of the flap 4 of the lid 3, and swings between brackets 6, 6 provided on the handle 5 in a state where the lid 3 is covered with the container body 1. It has come out. Therefore, even if the clamp 12 with a hook is provided, it can be formed in a preferable design without being hidden in the handle 5 and independently protruding to the side surface of the container body 1.

On the other hand, the main body side engaging piece 13 to which the hooked clamp 12 is disengaged (this is also called a clamp receiving portion).
Is formed by a folded piece extending downward from the opening between the brackets 6 and 6, and the lower end side of the folded piece is slightly bent outward. That is, the downward piece (the lower end side of the folded peripheral portion 2) constituting the flap is slightly bent outward to form the main body side locking piece 13, and the bending angle is determined by the triangular ridge line of the bracket 6 and the side view. Is matched.

Therefore, the clamp receiving portion does not increase the number of parts, and furthermore, in the container body 1 to be injection-molded,
Even if it is far from the gate, no projections or ridges are formed, so there is no fear of supply resin shortage.

If the hooked clamp 12 is in a vertical state, the hook 13 can be locked to the main body side locking piece 13 without utilizing the resin elastic distortion of the hook. Of course, the lid 3 can be sealed by its own weight because it is a large-sized lid 3 without using elastic strain.

The hook clamp 12 will be further described.
On the flap 4 of the lid 3, a bulging portion 4A large enough to be loosely fitted between the brackets 6 and 6 is formed.
Both side surfaces of A are configured as lid brackets 14 and 14. The lid bracket 14 has an uneven surface 22 so that the pin hole 24 can be easily formed.

The hooked clamp 12, which is pivotally supported by the lid brackets 14, 14, has a pair of inwardly curved arms 16, 16 whose bases are pivotably supported, and these arms. A hook (referred to as a well-known key) having a substantially T-shaped cross section integrally connected to the tip of the arm 16 and an inside of the base of the arm 16; The arm 16 is generally constituted by a head-supported pivot pin 23 which is protruded from the arm (this arm 16 is also referred to as a clamp body in this specification). The pivot pin 23 with the head is pushed into the pin hole 24 opened in the bracket 14 for the lid as described above, and the clamp 12 with the hook is pivotally supported by the pivot pin 23 with the head. (The position of the head-supported pivot pin 23 is also referred to as a clamp pivot point in this specification).

The outer surface of the T-shaped horizontal portion 18 of the hook 17 substantially matches the outer edge (ridge) of the arm 16.
The T-shaped foot 19 is inclined upward on the clamp pivot point side. A foot side surface 19A on the clamp pivot point side of the T-shaped foot portion 19 forms a hook hook portion, and is locked to the main body side locking piece 13.

The hook 17 is connected to the main body side locking piece 13.
When the hook 17 is locked, the hook 17 is located inside (on the container body 1 side) from the clamp pivot point, and the upward inclination angle α of the hook 17 is greater than the bending angle β of the body side locking piece 13. It's big. That is, the upward inclination angle (90 ° -α) with respect to the horizontal is smaller than the inclination angle (90 ° -β) due to bending.

Therefore, when the lid 3 is covered with the container body 1 and the container is to be hermetically closed, the clamp 12 with the hook is swung about the pivot point of the clamp, so that the T-shaped foot portion 19 is formed.
When the clamp with hooks 12 is in a horizontal state and passes without interfering with the lower end of the main body side locking piece 13 and the hooked clamp 12 is in a vertical state, the T-shaped foot 19 is placed inside the main body side locking piece 13. It is positioned upward and stops with the main body side locking piece 13 scooped. Therefore, the T-shaped foot portion 19 can be locked without generating elastic strain, and does not come off naturally.

It should be noted that the small projection 2 is formed only on the foot side surface 19A.
6 is provided and brought into contact with the inner surface of the main body side locking piece 13,
The engagement and disengagement becomes more reliable. In this case, a slight resin elastic distortion occurs in the hook 17. Reference numeral 25 denotes a non-slip recess.

In the folded peripheral portion 2, for example, the folded depth (flap length) is 20 to 25 mm, and the distance to the container body 1 by folding, that is, the width is 10 to 15 mm.
If the size of the container body, the handling of the operator's finger enters between the container body 1 and the folded peripheral portion 2 to facilitate handling such as movement, and a plastic bag larger than the opening of the container body 1 is stored in advance, When garbage is put into the garbage (commonly used in a garbage container for a cafeteria), the open end can be folded back and pushed into the back side of the peripheral portion 2 to fix it.

Next, another method of using the clamp with hook 12 will be described. As shown in FIG. 6, with the lid 3 leaning against the side of the container body 1, the clamp 12
Is swung by θ with respect to the flap 4 of the lid 3, and the foot side surface 19 </ b> A is used so as to be hooked on the stepped portion 20 shown in the figure.

That is, the step portion 20 is formed inside the folded peripheral edge portion 2 of the container body 1 and has a circumferential length substantially equal to the interval between the brackets 6 and 6. Therefore, since the clamp 12 with the hook is sandwiched between the brackets 6 and 6, and the foot side surface 19A of the hook 17 is hooked on the step 20, the lid 3 opened at the time of putting dust is set (lightly attached). Things).

Therefore, in the container body 1 of the present embodiment, a pair of brackets 6 and 6 are formed on both side surfaces thereof.
Since the lid 3 is also provided with the clamps 12 with hooks on both sides, for example, when handling dust, the two clamps 12 with hooks are released from swinging, and the lid 3 is attached to the container body 1 when dust is introduced. When the lid 3 is opened by lifting it up to one side and displacing it obliquely and opening the lid 3, the clamp 12 with one hook coming upward is sandwiched between the brackets 6 and 6, and the foot side surface 19 A of the hook 17 is brought into contact with the step portion 20. Hooked on
The lid 3 can be set in a state of leaning against the container body 1. As a result, the opened lid 3 does not hinder the dust input operation.

When closing the lid 3, for example, after removing the foot side surface 19 A of the hook 17 from the step portion 20,
Can be lifted and closed.

As described above, the step portion 20 is simply formed,
Since the hook 17 is configured to be hooked thereon, as one preferable handling, the lid 3 can be opened and closed while being shifted to the left or right of the container body 1 and can be set when the lid 3 is leaned.

Therefore, the handling of the operator's arm becomes natural during the handling, and the handling of the heavy lid 3 of the large-sized garbage container can be facilitated.
The lid 3 is not provided on the front surface of the rectangular container body 1, and
It can be convenient, for example, without getting in the way.

It should be noted that the T-shaped hook 17 has a section L
Even if the container body 1 does not have the handle 5 and the lid 3 does not have the bulging portion 4A, the clamp 12 with the hook may be provided on the outer periphery of the lid 3. It only needs to be suspended.

[0034]

According to the first aspect of the present invention, the lower end of the downwardly directed piece on the outer periphery of the container is slightly bent outward to form a clamp receiving portion (a locking portion of a clamp having a turning jaw). To
Since the hooks suspended from the lid are disengaged with the hooks facing upward, they can be disengaged without causing elastic deformation of the resin. The quality of the function (quality that disengages in the same state over time) can be given, and thus the handling can be facilitated. In particular, since the hook is engaged with the clamp body in a vertical state, it does not come off naturally.

In particular, even if the lid is opened and closed violently,
The clamp is not damaged, and the pressing force and the pulling force required for the operation are not required.

According to the second aspect, the clamp receiving portion can be easily formed, and even if the large trash container is left outdoors and the resin is deteriorated or aged, a certain engagement / disengagement function can be provided.

According to the third aspect, in addition to the effects described above, the hook can be more reliably engaged with and disengaged from the clamp receiving portion.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention and is a partially cut front view with a center line a as a boundary.

2 is a plan view of FIG. 1 on the left side with respect to a center line b, and a bottom view of FIG. 1 is a right side.

FIG. 3 is a partial cross-sectional view of a main part of the side view of FIG. 1;

FIG. 4 is a detailed view of a main part of FIG. 1 and is a view as seen from arrows A to A in FIG. 5;

FIG. 5 is a detailed view of a main part of FIG. 3;

FIG. 6 is another use state diagram of FIG. 4;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Container main body, 3 ... Lid, 13 ... Main body side locking piece, 16 ... Arm, 17 ... Hook

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B65D 45/16 B65F 1/16

Claims (3)

(57) [Claims] 1. A plastic container is formed on the outer periphery of an opening.
The lower end side of the downward piece constituting the flap is slightly bent outward to form a clamp receiving portion, and the base of the plastic clamp body is pivotably supported by the opening of the plastic lid covering the container. And an upwardly formed hook is integrally provided inside the distal end of the clamp body, and the hook is attached to the clamp receiving portion by a clamp pivot point.
Can be disengaged without using resin elasticity.
As a noh, while keeping the disengagement function constant over time,
When the hook is locked in the clamp receiving portion,
Lock the clamp body vertically so that it does not come off naturally.
A clamp for a lid of a plastic container, characterized in that: 2. A clamp receiving part according to claim 1 ,
And a pair of bras projecting integrally from the
In addition to the configuration between the brackets,
Clamp for lid of plastic container as large shaped trash container . 3. A process according to claim 1 or a substantially T-shaped two hooks
The T-shaped foot is provided with a small projection on the side
When it comes into contact with the inner surface of the part, the hook has some resin elasticity
A clamp for the lid of a plastic container that generates distortion .