JPS5942392Y2 - can opener - Google Patents

Description

[Detailed description of the invention] The present invention relates to a can opener in which a lid is connected to the upper part of a recessed part by a double joint structure, and has a peripheral surface that engages with the inner wall of the leading edge and the top of the leading edge of the double joint. It consists of a feed wheel and a cutting wheel located outside the leading edge of the double joint, which pinches the double joint with the feed wheel and cuts the outer wall of the double joint, and the positional relationship between the cutting wheel and the can is devised. By doing so, an opening force is applied to the cut portion of the double joint outer wall.

In general, many can openers for cans with a double joint structure have been proposed in which the outer wall of the double joint is cut using a feeding wheel and a cutting wheel to open the lid, but these proposals involve complicated mechanisms. However, since it requires a large rotational force, it is difficult to operate economically and in terms of operation.

The present invention eliminates these conventional drawbacks,
An embodiment will be described below with reference to the drawings.

FIG. 1 shows in detail the main parts of a can to be cut by the can opener of the present invention, 1 is a body, 2 is a lid, and the outer peripheral edge of the lid 2 is attached to the upper edge of the body 1 from the inside. It is continuously folded outward, and this folded part is further folded,
A bent part 3 of the body 1, an outer wall 4 and an inward folded part 5 of the lid 2 which are enclosed in this bent part 3, and a lid 2 which is in contact with the inside of the body 1.
The inner wall 6 of the lid 2 and the leading edge T of the lid 2 form a so-called double joint.

FIG. 2 shows a cross-sectional view of the main parts of a can opener according to an embodiment of the present invention, and 8 is a main body case, which is equipped with a motor 9 and gears 10 and 11 for transmitting rotation.

A recess 12 is formed on one side of the case 8, and the recess 1
A rotary wheel holding stand 13 is attached to 2.

The rotary wheel holder 13 rotatably holds a feed wheel 14 and a cutting wheel 15 on its outer side.

Specifically, the feed wheel 14 is held by fitting its rotating shaft 16 into 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 connecting portion between the rotating shaft 16 and the gear 11, that is, a cam hole is provided in the connecting portion 18 of the gear 11.
9, and a pin 20 protruding from the side of the rotating shaft 16 is fitted into the cam hole 19.

Therefore, when the gear 110 rotates, the feed wheel 14
It is designed 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 includes a large diameter portion 22 and a small diameter portion 23 formed concentrically inside the large diameter portion 22, and has a conical surface 24 extending from the large diameter portion 22 to the small diameter portion 23. There is.

A notch 25 is provided on the outer peripheral surface of the conical surface 24 and the small diameter portion 23.

The cutting wheel 15 has a frustoconical shape, and its end portion formed by a larger surface 26 and a conical surface 27 forms a cutting blade.

The feed wheel 14 and the cutting wheel 15 are arranged in the following relationship.

In other words, the conical surface 24 of the feed wheel 140 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 21 of the cutting wheel 15 when viewed from the side.
The angle A formed by this is an acute angle as shown in FIG.

Further, as shown in FIG. 4, the center of the feed wheel 14 and the cutting wheel 1 are
The shaft 30 of the can is tilted at an angle B by the deflection pin 29 when viewed from the front so that the axis 30 of the can is in a twisted position relative to a line 31 passing through the center of the can 5, that is, the two are not on the same plane.

In addition, 28 in FIG. 2 is a can pad part that protrudes to the side of the rotary wheel holder 13.

The can opener of the present invention is constructed as described above, and the function of the can opener will be explained below.

First, as shown in FIG. 3, the feed single 140 conical surface 24 is brought into contact with the inner wall 6 of the double joint of the can, and the outer periphery of the small diameter portion 23 is brought into contact with the top of the round wire 87 of the double joint.

Also, 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 gear 10.1
1 rotates.

The rotation of the gear 110 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.

The feed wheel 14 and cutting wheel 15 thus clamp the double seam of the can, and the notch 25 of the feed wheel 14 presses firmly against the inside wall 6 of the double seam and the top of the leading edge I.

Furthermore, 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, the positional relationship between the feed wheel 14 and the cutting wheel 15 is as follows: the feed wheel 140 rotation shaft 16 and the support shaft 21 of the cutting wheel 15 when viewed from the side.
The angle A formed by the can is an acute angle, and in particular, the line 31 connecting the center of the feed wheel 14 and the center of the cutting wheel 15 and the axis 30 of the can are in a twisted positional relationship, that is, when viewed from the front so that they are not on the same plane. Since it is tilted by an angle B, the cutting blade portion of the cutting wheel 15 that clamps the outer wall 4 of the double joint has an angle a with respect to the traveling direction a of the can, as shown in FIG. ,
The outer wall 4 is cut and at the same time the cut is forcibly widened, thus opening the barrel 1 and the lid 2.

Furthermore, as a structural effect, in the rotary wheel holding base 13, the hole for press-fitting the bearing 17 of the feed wheel 14 and the hole for holding the support shaft 21 of the cutting wheel 15 are nearly parallel, so that The mold structure allows easy one-way punching, making it easy to manufacture the rotary wheel holder 13.

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 to obtain cutting force and opening force, and it can reliably and easily open the double joint of cans. It is extremely useful as it can be cut open.

In the embodiment described above, the rotational force of the feed wheel is obtained by a motor, but even if it is manually rotated, there will be no difference in the effects of the present invention.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the 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. It is. 1... Body, 2... Lid, 4...
・Outer wall, 6... Inner wall, 1... Leading edge, 8... Main body case, 13... Rotating wheel holder, 14... ... Performance wheel, 15 ... Cutting wheel, 16 ... Rotating shaft, 21 ... Support shaft, 31 ... Center of feed wheel 14 and A line passing through the center of the cutting wheel 15.

Claims (1)

[Scope of utility model registration request] A feed wheel that comes into contact with the inner wall and leading edge of the double joint of the can, and a cutting wheel that comes into contact with the outer wall of the double joint of the can and pinches the double joint with the feed wheel, The axes of the ring and the cutting wheel form an acute angle when viewed from the side, and the can axis has a torsional positional relationship with respect to a line passing through the center of the feed wheel and the center of the cutting wheel. A can opener featuring