JPS6152076B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a can opener in which a lid is connected to the upper part of the barrel by a double joint structure.

BACKGROUND OF THE INVENTION In general, many can openers for cans having a double joint structure have been proposed, which use a feeding wheel and a cutting wheel to cut the outer wall of the double joint and open the lid.

An example of this is shown in Japanese Patent Application Laid-open No. 109076/1983.

In this device, the shaft of the feed gear that clamps the double seam of the can and the shaft of the cutter are parallel to each other.

Problems to be Solved by the Invention Since the can opener described above has the shaft of the feed gear and the shaft of the cutter parallel to each other, it is possible to separate the double seam of a can, but it is not possible to push the cut end apart. Therefore, there was a problem in that it was troublesome to manually open the lid after separating the double joint of the can.

Means for Solving the Problems The can opener of the present invention for solving the above problems includes:
A feed wheel that contacts the inner wall and round edge of the double joint of the can, and a cutting wheel that contacts the outer wall of the double joint of the can and pinches the double joint with the feed wheel, The shaft and the axis of the cutting wheel form an acute angle when viewed from the side, and the shafts are configured so that they have a torsional positional relationship when viewed from the front.

Effect: With the above-mentioned configuration, after the double joint portion of the can is separated, the cut end is pushed open, and subsequent opening of the lid by hand can be easily performed.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows in detail the main parts of a can to be cut by a can opener according to an embodiment of the present invention.
is a body part, 2 is a lid, the outer peripheral edge of the lid 2 is continuously folded over the upper edge of the body part 1 from the inside to the outside, and this folded part is further folded,
An outer wall 4 of the lid 2 that encloses the bent portion 3 of the body 1
and an inward folding part 5 and a lid 2 that contacts the inside of the body part 1
The inner wall 6 of the lid 2 and the rounded edge 7 of the lid 2 form a so-called double joint. FIG. 2 shows a cross-sectional side view of a main part of a can opener according to an embodiment of the present invention. Reference numeral 8 denotes a main body case, and the inside thereof is provided with a motor 9 and gears 10 and 11 for transmitting rotation. A recess 12 is formed in one side of the case 8, and a rotating wheel holder 13 is attached to this recess 12. The rotating wheel holding base 13
rotatably holds a feed wheel 14 and a cutting wheel 15 on its outer side. Specifically, the feed wheel 14 is held with its rotating shaft 16 fitted in a bearing 17 provided on the rotating wheel holder 13, and the end of the rotating shaft 16 is connected to the gear 11. A cam mechanism is used in the connection between the rotating shaft 16 and the gear 11. That is, a cam hole 1 is formed in the connection cylinder 18 of the gear 11.
9 and protrudes from the side of the rotating shaft 16.
0 is fitted into the cam hole 19. Therefore, when the gear 11 rotates, the feed wheel 14 rotates around the rotating shaft 16.
It has become possible to be attracted to people through The cutting wheel 15 is pivotally supported by a support shaft 21 fixed to the rotary wheel holder 13, and is provided so as to be independently rotatable.

The feed wheel 14 has a large diameter portion 22 and a large diameter portion 2.
2, and has a conical surface 24 extending from the large diameter portion 22 to the small diameter portion 23. and the conical surface 24
A notch 25 is provided on the outer peripheral surface of the small diameter portion 23. The cutting wheel 15 has a truncated conical shape,
The end portion consisting of the larger surface 26 and the conical surface 27 forms a cutting blade.

The feed wheel 14 and the cutting wheel 15 are arranged in the following relationship. That is, the conical surface 24 of the feed wheel 14 and the cutting blade of the cutting wheel 15 are in a relationship to clamp the double joint of the can, and the rotating shaft 16 of the feeding wheel 14 and the support shaft of the cutting blade 15 when viewed from the side. The angle A formed by 21 is an acute angle as shown in FIG. Furthermore, as shown in FIG. 5, the support shaft 21 of the cutting wheel 15 is tilted by an angle B when viewed from above so that the shaft 21 of the cutting wheel 15 is in a twisted position relative to the rotation shaft 16 of the feed wheel 14, that is, the two are not on the same plane. ing. Note that 28 in the figure is a can pad portion that protrudes to the side of the rotary wheel holder 13.

The can opener according to one embodiment of the present invention is constructed as described above, and the operation of this can opener will now be described. First, the third
As shown in the figure, the conical surface 24 of the feed wheel 14 is
The inner wall 6 of the double joint is brought into contact with the inner wall 6 of the double joint, and the outer periphery of the small diameter portion 23 is brought into contact with the top of the round edge 7 of the double joint.
Further, the cutting blade of the cutting wheel 15 is brought into contact with the outer wall 4 of the double joint. Next, when the motor 9 is rotated, the rotation transmission gears 10 and 11 are rotated. The gear 11
The rotation causes the cam mechanism to pull the feed wheel 14 shown by the broken line in FIG. 3 to the position shown by the solid line. Therefore, the feed wheel 14 and the cutting wheel 15 pinch the double joint of the can,
The notch 25 of the feed wheel 14 presses firmly against the inner wall 6 of the double seam and the top of the rounded edge 7. Further, as the feed wheel 14 rotates, the cutting wheel 15 also rotates, and the outer wall 4 of the double joint is cut all around by the cutting blade of the cutting wheel 15.

Here, as mentioned above, the feed wheel 14 and the cutting wheel 1
5, the angle A between the rotating shaft 16 of the feed wheel 14 and the supporting shaft 21 of the cutting wheel 15 forms an acute angle when viewed from the side, and in particular, the supporting shaft 21 is in a twisted position relative to the rotating shaft 16, that is, both Since it is tilted by angle B when viewed from above so that it is not on the same plane,
As shown in FIG. 4, the cutting blade of the cutting wheel 15 that clamps the outer wall 4 of the double joint has an angle α with respect to the traveling direction a of the can, and the outer wall 4 is cut at the same time. The incision is forcibly expanded, and the portion 1 and lid 2 are opened. Therefore, the lid can be easily opened by hand after the double joint is separated.

Note that if the angle B is not set, the angle α
In order to hold the can, as shown in the figure, it is necessary to forcibly tilt the can by setting the push rod 29 etc. to the inclined position 29' on the side of the case 8, and the frictional force between the push rod 29 and the can is reduced. Therefore, a large amount of rotational force is required to rotate the can. Furthermore, since this friction is not constant, cutting becomes unstable. In this embodiment, the abutting rod 29 is not necessarily required, but is provided to prevent the can from swinging during rotation due to variations in the cans and joints in the same portion. Therefore, the resting rods 29 and 2
The round edge 7 of the heavy joint is only slightly touched when the can is opened, and there is no adverse effect due to the friction.

Furthermore, in this embodiment, the lowest part 30a on the bearing 17 side of the hole 30 for holding the support shaft 21 of the cutting wheel 15 is
and the highest part 30b on the anti-bearing side as shown in FIG. One-way extraction is easily possible, and the rotary holding table 13 can be manufactured easily.

In the above embodiment, the rotational force of the feed wheel is obtained by a motor, but it may also be manually rotated.

Effects of the Invention As explained above, the can opener of the present invention has a simple structure in which the positional relationship between the axis of the feed wheel and the axis of the cutting wheel is devised, and it can obtain cutting force and opening force, and The lid can be cut open reliably and easily, and the lid can then be opened easily by hand, making it extremely useful in practice.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a double joint of a can, Fig. 2 is a sectional view of a can opener according to an embodiment of the present invention, and Figs. 3, 4, and 5 are explanatory diagrams of the can opener state. , FIG. 6 is an enlarged sectional view of the rotating wheel holder 13, and FIG. 7 is a sectional side view showing an example of a mold for forming the rotating wheel holder 13. DESCRIPTION OF SYMBOLS 1... Same part, 2... Lid, 4... Outer wall, 8... Main body case, 13... Rotating wheel holder, 14... Feeding wheel, 15...
Cutting wheel, 16... rotating shaft, 21... supporting shaft.

Claims (1)

[Claims] 1. A feed wheel that contacts the inner wall and round edge of the second type joint of the can, and a cutting ring that contacts the outer wall of the second type joint of the can and pinches the double joint with the feed wheel, and the feed wheel The can opener is characterized in that the shaft of the can opener and the shaft of the cutting ring form an acute angle when viewed from the side, and the shafts have a torsional positional relationship when viewed from the front.