Special receptacle or package – For spark plug
Reexamination Certificate
2001-09-07
2003-03-18
Bui, Luan K. (Department: 3728)
Special receptacle or package
For spark plug
C206S485000
Reexamination Certificate
active
06533115
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a packaging box for spark plugs which houses and holds a plurality of spark plugs. The present invention, more particularly, relates to a packaging box suitable for spark plugs that is displayed and sold in a suspended state in an automobile parts store etc.
Conventionally, a packaging box for spark plugs that is sold in an automobile parts store is configured in a manner as shown in FIG.
19
. For example, the packaging box
100
includes a cover member
101
and a base plate member
103
. The cover member
101
is made of plastics formed by die-molding a plurality of plug holding portions
105
so as to match to the shapes of a plurality of spark plugs
3
, respectively. The base plate member
103
is made of paper at which a suspending hole
102
is formed. The cover member
101
is adhered to the base plate member
103
in a state that the plurality of spark plugs
3
are held by the plug holding portions
105
. Then, the packaging box
100
is suspended on a hook of a sales display rack through the hole
102
when they are sold in an automobile parts store etc.
In recent years, in the industrial society, it has been grappled with the selection of materials which are small in environmental load in view of environmental protection. However, the aforesaid conventional packaging box for spark plugs are not suitable for the environmental protection since the cover member made of plastics is used. Thus, it is proposed to form the cover member by paper like the base plate member. However, even if the cover member is merely formed by paper, when the packaging box suspended on the sales display rack is erroneously fallen, there arises a problem that the spark plugs can not be protected sufficiently and so may be broken and further the breakage of the packaging box can not be prevented.
SUMMARY OF THE INVENTION
Accordingly, the invention has been made in view of the aforesaid problem of the prior art. It is an object of the invention to provide a packaging box for spark plugs which is suitable for such a sales style that the packaging boxes are displayed in suspended states in an automobile parts store etc. Namely, the packaging box according to the present invention is formed in view of the environmental protection and which has sufficient strength upon being fallen.
The above-mentioned object can be achieved by a packaging box for a spark plug, the spark plug including a center electrode, a terminal portion, a metallic shell having a large diameter portion at a center thereof and an engine engagement portion, an outer side electrode having one end coupled to the metallic shell, and an insulation member placed between the center electrode and the metallic shell for holding the center electrode at one end thereof and also holding the terminal portion at the other end thereof, the packaging box according to the present invention comprising:
an inner box body made of paper for holding the spark plug, the inner box body including a protection box portion that is configured by a front side protection wall, a rear side protection wall, a top side protection wall and a bottom side protection wall for protecting the outer side electrode and the engine engagement portion of the spark plug; and
an outer box body made of paper and having an inner box body housing space that is formed into a rectangular parallelepiped shape,
wherein the top side protection wall has a bendable tab that is bent into an inner side of the protection box portion, the bendable tab in its bent state forms an engine engagement portion insertion part capable of inserting therein the engine engagement portion of the spark plug, and
wherein a bent edge of the bendable tab in its bent state supports a lower surface of the large diameter portion when the engine engagement portion of the spark plug is inserted into the engine engagement portion insertion part.
In the packaging box, it is advantageous that the bendable tab is defined by a cut line that comprises:
an arc cut line formed along an outer periphery of the engine engagement portion insertion hole,
a split cut line for dividing a surface area corresponding to the engine engagement portion insertion hole into two areas, and
an auxiliary cut line extending from the arc cut line toward the bent edge of the top side protection wall.
In the packaging box, it is advantageous that a width of the bottom side protection wall in a front-rear direction of the inner box body is determined in accordance with a width of the inner box body housing space in a front-rear direction of the outer box body.
In the packaging box, it is advantageous that one of the front side protection wall and the rear side protection wall has a projection piece which extended beyond a bending line relative to the bottom side protection wall and extended in flush with the one of the walls.
In the packaging box, it is advantageous to further comprises:
a reinforcement plate made of paper and having an insertion slit formed by cutting an arc area having a diameter smaller than that of the engine engagement portion insertion part, wherein the reinforcement plate has a portion inserted between the large diameter portion of the spark plug and the top side protection wall of the protection box portion.
In the packaging box, it is advantageous that the reinforcement plate comprises:
a horizontal reinforcement part in which the insertion slit is formed; and
a vertical reinforcement plate extending downward from one side edge of the horizontal reinforcement plate.
In the packaging box, it is advantageous that a paper fiber direction of the reinforcement plate intersects a paper fiber direction of the inner box body by a predetermined angle.
In the packaging box, it is advantageous that the inner box body further comprises:
a main body wall extending upward from the protection box portion; and
a terminal holding portion connected to the main body wall and having a terminal portion insertion hole that is capable of inserting therein and holding the terminal portion of the spark plug.
In the packaging box, it is advantageous that the terminal holding portion comprises:
a slanted holding wall extending in a slanted upward direction from an upper end edge of the main body wall and having a free end edge that engages with a corner portion of the inner box body housing space of the outer box body in a state that the inner box body is housed in the outer box body, and
wherein the main body wall is brought in surface-contact with a wall of the outer box body that defines a part of the inner box body housing space.
In the packaging box, it is advantageous that the terminal holding portion comprises:
an auxiliary wall extending in a direction normal to the main body wall from an end edge of the main body wall; and
a slanted wall extending in a slanted downward direction from an end edge of the auxiliary wall and having the terminal portion insertion hole,
wherein the terminal holding portion is configured in a box shape that is defined by the main body wall, the auxiliary wall, and the slanted wall.
In the packaging box, it is advantageous that the terminal holding portion comprises:
a cut line extending along an outer periphery of the terminal portion insertion hole, and
a pressing tab which is bent in insertion direction and made in contact with pressure to the terminal portion of the spark plug when the terminal portion of the spark plug is inserted into the terminal portion insertion hole.
In the packaging box, it is advantageous that the terminal portion of the spark plug has a screw portion, and the packaging box further comprises:
a screw terminal holding plate made of paper and having a terminal holding portion for holding the screw portion.
In the packaging box, it is advantageous that the top side protection wall further comprises:
an insulation member insertion part which is capable of inserting therein the insulation member of the spark plug and disposed in adjacent to the engine engagement portion insertion part, to thereby hold the adjacent two s
Aoki Tomoaki
Kawahara Yoshihiko
Saiki Yoshiaki
Sanoi Hisaki
Bui Luan K.
Morgan & Lewis & Bockius, LLP
NGK Spark Plug Co., LTD
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