JPS6114466Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an opening device that extends the life of cutlery and facilitates its replacement.

This type of opening device has a structure in which an opening knife is fixed to the inside of one free end of a U-shaped curved plate with restoring elasticity, and a convex part is formed inside the opposite free end. is conventionally known from Japanese Utility Model Application Publication No. 53-129675, etc., and a structure in which the blade cover is slidably attached to the outside of the blade mounting part via an elastic member without coming out is also disclosed in Japanese Utility Model Application Publication No. 54-49369. This method is conventionally known from, for example, Japanese Patent Publication No. The former has the advantage that when the bag to be opened is held between the blade and the protrusion and then slid laterally, the contact area that causes sliding friction resistance can be reduced and the bag can be opened with light force, but the blade is fixed. Since cutting is always performed at the same point on the blade, the sharpness deteriorates relatively quickly. In addition, although the latter is safe in that the blade protrudes only when necessary and is not exposed all the time, the installation structure of the blade cover is relatively troublesome, and the potential drawbacks of fixing the blade described above also occur. Summer.

In order to eliminate the above-mentioned drawbacks, this invention allows the cutter to move freely within the range of distance regulated by the blade cover, thereby making it possible to change the location where the cutter is used and extending its service life. The purpose was to make it easy to install and replace.

The configuration of this invention will be explained as follows with reference to the embodiment shown in the drawings.

A hole 3 is bored in the middle of a plate-like blade body 1 having a straight blade. This hole 3 is for attaching a cylindrical sliding body 4 below the plate-shaped blade 1 in a detachable manner.
In the cylindrical sliding body 4, two half-cut cylindrical parts 5.5a are connected via a flaky connecting part 6, and if a protrusion 7 that fits into the hole 3 is formed on the plane part of one half-cut cylindrical part 5, then the other half-cylindrical part 5. The above-mentioned protrusion 7 is formed on the flat surface of the half-cut cylindrical portion 5a.
(see Figure 2), and after inserting the hole of the plate-shaped blade 1 into the protrusion 7, the protrusion 7 is fitted into the engagement hole 8 and overlapped to form a plate-shaped blade. The blade part 2 of the blade body 1 is integrally attached so as to protrude from the cylindrical sliding body 4 (see FIG. 4). Further, by disengaging the engagement between the protrusion 7 and the engagement hole 8, the plate-shaped blade 1 can be removed and replaced.

Next, the cutter body 9 has a lower plate 10 and a center hole 1.
1 and an upper plate 12, at the tip of the lower plate 10 there is an inner surface 13 that slidably guides the cylindrical sliding body 4, and a split 14 that guides the blade part 2 that can protrude upward. A guide portion 15 having openings at both ends is formed. 16 indicates a side opening. Both the length of the inner surface 13 and the length of the split 14 are longer than those of the cylindrical sliding body 4 (see FIG. 3). When the plate-shaped blade body 1 and the cylindrical sliding body 4 are inserted into one body through one opening 16 of the guide part 15, the blade part 2 protrudes beyond the outer surface of the guide part 15 (see FIG. 4). ).

A safety cover 17 is formed on the free end side of the intermediate plate 11, and under normal conditions, the side plate portions 18, 18 of the safety cover 17 prevent the cylindrical sliding body 4 inserted into the guide portion 15 from slipping out. The blade portion 2 is prevented from being exposed from the blade opening 19 (see FIG. 4). However, when the safety cover 17 is pulled up, the openings 16, 16 at both ends of the guide section 15 are completely defined, and the integrated plate-shaped blade 1 and cylindrical sliding body 4 can be freely taken in and out. However, when applying a pressing force above the safety cover 17, the blade portion 2 is inserted into the blade opening 1.
It will appear from 9 onwards. This pressing force is transmitted via the hemispherical convex portion 20 of the upper plate 12 facing the plate-shaped blade 1. The dashed line and solid line in FIG. 3 show the state before and after pressing. In the figure, 21 is a magnet;
22 is a bag to be opened.

As described above, this invention has a cylindrical sliding body 4 removably attached to the lower part of the plate-shaped blade 1, which can be inserted from the side and moved from side to side, and a guide that allows the blade part 2 to protrude upward. Since the section 15 is provided on the lower plate 10 of the cutter body 9 having a three-pronged structure, the integrated plate-like blade 1 and cylindrical sliding body 4 can be attached to the cutter body 9 very easily, and the blade section The sliding in the lateral direction to make the location of use in 2 variable is:
Since the protruding blade portion 2 prevents movement in the rotational direction, the rotation can be performed very smoothly. Furthermore, not only is it easy to replace one plate-shaped blade,
Further, the intermediate plate 11 of the cutter body 9 has the guide portion 1
Since the side plate portion 18 facing the side opening 16 of 5 and the blade opening 19 are bored, the cylindrical sliding body 4
The blade part 2 can be easily prevented from slipping out from the guide part 15, and on the contrary, can be easily lifted and extracted, and the blade part 2 can be prevented from being exposed unnecessarily when not in use, making it safe. Since the upper plate 12 of the cutter body 9 is formed with a hemispherical convex portion 20 facing the blade portion 2, the bag body 2 to be opened is
The blade 2 is pressed in a dotted manner to the blade part 2, and has good sharpness when moving the clamped cutter main body 9 laterally, and since the cutting location of the blade part 2 is variable each time it is used, its sharpness can be maintained for a long time.

[Brief explanation of the drawing]

Figure 1 is an overall perspective view of the opening device of this invention, Figure 2
The figure is a perspective view of the plate-shaped blade and the cylindrical sliding body before assembly. FIG. 3 is a sectional view in an unsealed state, and FIG. 4 is a longitudinal sectional view in a normal state. DESCRIPTION OF SYMBOLS 1... Plate-shaped blade body, 2... Blade part, 4... Cylindrical sliding body, 9... Cutter main body, 10... Lower plate, 11
... middle plate, 12 ... upper plate, 15 ... guide section,
16... Side opening, 17... Safety cover, 18... Side plate portion, 19... Blade opening, 20... Hemispherical convex portion.

Claims (1)

[Scope of utility model registration request] A cylindrical sliding body 4 is removably attached to the lower part of the plate-shaped blade body 1 and can be inserted from the side and moved from side to side, and the guide part 15 that causes the blade part 2 to protrude upward has a three-pronged structure. Lower plate 1 of eggplant cutter body 9
0, and the intermediate plate 11 of the cutter body 9 has a side plate portion 18 facing the side opening 16 of the guide portion 15.
A safety cover 17 is formed with an opening 19 for the cutter body, and the upper plate 12 of the cutter body 9 has a blade portion 2.
An opening device formed by forming a hemispherical convex portion 20 facing the.