JPH0716600Y2 - Folding case for storing spare blades - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The popularization of cutter knives, which saves the trouble of grinding the blades by updating the cutting edge by breaking it off, is supported by its easy and abundant supply of spare blades. Since the spare blade is originally supplied in a finely ground state, it can be stored without any risk of scattering or scattering even if it is handled roughly roughly for safe handling. It needs to be secured during shipping, transportation, display, and even storage at the user.

The present invention proposes a case for accommodating a spare blade, which is convenient for such storage and of course suitable for mass production, and which is devised so as to be easy to use.

(Prior art) This type of replacement blade, that is, a folding blade type blade that renews the cutting edge by breaking off each time the wear of the cutting edge is changed is a representative example, and a replaceable type that replaces a stopped cutting edge each time Blades, etc. are shipped, transported, and transported in the form of a package that is stored in a storage case as multiple blade stacks with their outer shapes aligned.
It is used for display, storage and carrying, and its storage case has traditionally been
By so-called blow molding of polyethylene resin,
In many cases, a hollow bag-shaped case main body and a cap are individually made, and the replaceable blade laminated body is put into the case main body to cover the cap to form a package.

(Problems to be solved by the invention) Since the bag-shaped case body and cap made by blow molding can only be made one by one in each molding process, productivity is difficult, and a replacement blade laminated body is used as a case body. Since the mouth of the opening is too small for the work to be stored, it was difficult to automate it, and there was a risk of injury by touching the exposed cutting edge when manually.

Overcoming all of these difficulties in an advantageous manner, of course, including handling of the replacement blade stack, including handling, it is also easy and safe to take out the replacement blade in actual use.
It is an object of the present invention to propose a folding case for accommodating a spare blade, which can be formed by injection molding, which is capable of simultaneously molding a large number of pieces in one molding process and is excellent in productivity.

(Means for Solving the Problem) In this invention, a stack (5) of a plurality of replaceable blades having the same outer shape is piled up in a width corresponding to the thickness and the three sides are enclosed in a U-shape. Side wall (1b), end wall (1c),
A flat bottom wall (1a) extending over the entire length of the laminated body (5), and a meat on the outer surface of the side wall (1'b) corresponding to the shorter end part of the flat bottom wall (1a) unequally bisected A case main body (1) having a thick step, and an ultra-thin hinge part integrally molded with the upper edge of the end wall (1c) and the end edge of the flat bottom wall (1a) at both ends of the case main body (1), respectively. (3a), (3b)
All are foldable plate-like closure lids (2a) interconnected via
And a nesting type fitting opening / closing lid (2b), and the plate-like closing lid (2a) is a side wall (1b) of the case body (1).
At the upper edge of the case, the telescopic snap stopper is fitted, and the telescoping fitting opening / closing lid (2b) has a thickness corresponding to the thickness difference of the outer surface of the side wall (1'b) of the case body (1) ( It has a surrounding wall (2c) that encloses the three shorter sides of 1) and a top wall whose top surface is aligned with the plate-like closing lid (2a), so that it can be removed from the case body (1). A folding case for storing a replacement blade, characterized by being hooked and locked.

There are two hooks that can be removed from the telescoping fitting opening / closing lid.
It is useful in practice that it is step-locked, and that the case body and each of the foldable lids are made of an injection-molded body of synthetic resin, especially polypropylene resin in the unfolded posture at their hinges. Is.

1 (a) to 1 (e) show a folding case for storing a spare blade according to the present invention, in which 1 is a case body and 2a and 2b.
Both are folding plate-like closing lids and telescopic fitting and closing lids, 3a and 3b are ultra-thin hinges, and 4a and 4b are locking claws.

Each of the foldable lids 2a, 2b is 180 °, 90 ° or more at the ultra-thin hinges 3a, 3b, respectively, as shown in the unfolded state (that is, the inner shape of the injection-molded mold) in FIG. It is possible to unveil over an angle of 0.15 ~
The case body 1 is interconnected with a minimum wall thickness of about 0.2 mm.

The case body 1 has a flat bottom wall 1a and a pair of side walls 1b as shown in FIG.
And the one end wall 1c forms a recess 6 for receiving the stack 5 of a plurality of replaceable blades having the same outer shape. That is, the stack 5 of a plurality of replacement blades is received in the recess 6 over the height corresponding to the thickness of the stack 5, and the side wall is received.
Enclose the three sides with 1b and the end wall 1c and store them tightly.

In this example, the ultra-thin hinge part 3a is the end wall 1c or the ultra-thin hinge part
Reference numeral 3b interconnects the foldable lids 2a and 2b with the flat bottom wall 1a.

On the upper edge of the side wall 1b of the case body 1, three pairs of locking claws 4a facing each other are provided in a protruding manner, and correspondingly, the plate-like closing lid 2a is fitted and killed by these locking claws 4a. The locking holes 7 are provided in a row, which is useful for holding the elasticity. In this example, two pairs of guide ribs 8 slightly inclined inward are provided between the adjacent locking claws 4a, and correspondingly, guide grooves 9 may be provided in a row in the plate-like closing lid 2a. To do.

Further, the side wall 1b of the case body 1 is provided with the opening / closing lid 2b shown in FIG.
Has a thin-walled portion 1b 'that fits the inner surface of the surrounding wall 2c of the lid 2b in the closed posture, and the outer wall of the thin-walled portion 1b' has an engaging projection 10 inclined toward the ultra-thin hinge portion 3b, and a bottom wall. 1a has a locking groove 11 that is cut out at the protruding corner, while the opening / closing lid 2b has an engaging groove 12 for the engaging protrusion 10 and an engaging claw 4b for the engaging groove 11. To do.

(Operation) The folding case for accommodating a spare blade according to the present invention is preferably made of a synthetic resin material such as polypropylene resin that is resistant to repeated bending in the deployed position shown in FIG. 2, and is suitable for mass production such as injection molding. By the resin molding method, a plurality of moldings can be formed at one time in one molding process.

Since the above-mentioned developed posture is maintained even when taken out from the molding mold, even if a plurality of replacement blade laminated bodies 5 are left with their cutting blades exposed, there is no particular danger as shown in FIG.
It can be easily loaded on the flat bottom wall 1a.

Therefore, first, the opening / closing lid 2a is placed on the case body 1 and the ultra-thin hinge portion 3a.
Are folded and overlapped with each other, and the locking claw 4a is pushed into the locking hole 7 between the fitting of the guide rib 8 and the guide groove 9 so that the opening / closing lid 2a is fitted to the case body 1 by the snap action of the locking claw 4a. The shot is held for murder.

Next, by rotating the opening / closing lid 2b around the ultra-thin hinge portion 3b, the locking claw 4b first surpasses the engaging projection 10 and the locking groove.
At the same time as falling into 11, the engaging protrusion 10 is housed in the engaging groove 12,
Obviously, the opening / closing lid 2b can be detachably locked by an opening operation that is caused by an external force against the elastic holding of the locking claw 4b.

(Embodiment) In addition to the specific examples illustrated in FIGS. 1 and 2, the folding case for accommodating a replacement blade of the present invention is, for example, an ultra-thin hinge portion 3b.
Can be modified so as to be moved to the free end side of the closing lid 2a and interconnected with the top wall of the opening / closing lid 2b.

(Effects of the Invention) The folding case for storing a spare blade according to the present invention has a foldable closing lid 2a and an opening / closing lid whose case body 1 is formed with a recess 6 for receiving a stack of a plurality of spare blades having the same outer shape. In addition to 2b, in their deployment position, not only is it excellent in productivity in that it is possible to perform a large number of moldings at once in one molding process such as injection molding, which is suitable for mass production. Since the upper part of the recess 6 is greatly opened in the posture, the replacement blade and the laminated piece 5 in which the sharpened cutting blades are lined up side by side can be automatically or manually loaded into the recess 6 without any particular danger. Since it can be easily carried out, it is convenient for packaging, and in use, it is possible to safely take out the replacement blade for one sheet by opening only the opening / closing lid 2b.

[Brief description of drawings]

FIG. 1 is a perspective view of a folding case for storing a replacement blade to which the present invention is applied, and an enlarged end view of each of AA and BB cross-sections, and FIG. 2 is a side view, a plain view, and a CC in a deployed position. It is a cross-sectional enlarged end view. 1 ... Case body, 2a, 2b ... Folding lid 3a, 3b ... Ultra-thin hinge part, 4a, 4b ... Locking claw 5 ... Replacement blade stacking piece, 6 ... Dimple

Claims (3)

[Scope of utility model registration request] Claims: 1. A side wall (1b) and an end wall (3b) which enclose a stack (5) of a plurality of replaceable blades having the same outer shape and overlap each other in a width corresponding to the thickness of the stack (3). 1c),
A flat bottom wall (1a) extending over the entire length of the laminated body (5), and a meat on the outer surface of the side wall (1'b) corresponding to the shorter end part of the flat bottom wall (1a) unequally bisected A case main body (1) having a thick step, and an ultra-thin hinge part integrally formed on the upper edge of the end wall (1c) and the end edge of the flat bottom wall (1a) at both ends of the case main body (1), respectively. (3a) and (3b) are interconnected with each other, each of which is composed of a foldable plate-like closing lid (2a) and a nesting type fitting opening / closing lid (2b), and the plate-like closing lid (2a) is a case body ( In contrast to 1), the upper edge of the side wall (1b) is elastically hooked to kill, and the telescoping fitting opening / closing lid (2b) is the thickness of the outer surface of the side wall (1'b) of the case body (1). The case body (1) has a thickness corresponding to a step and surrounds three sides of the shorter end of the case body (2c) and covers the plate-like closing lid (2a). Top wall and replacement blade accommodating folding case, characterized by comprising seals hook-stopping engagement as detachable fitted to the case body (1) has a to align the. 2. The case according to claim 1, wherein the hooks which can be disengaged from the telescopic fitting opening / closing lid (2b) are two-stage locking. 3. A body case (1) and foldable lids (2)
The case according to claim 1 or 2, wherein a) and (2b) are made of an injection-molded product of synthetic resin, especially polypropylene resin, in the unfolded posture at the hinge portions (3a) and (3b).