JP2002225985A - Can opener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a can opener which is simple in structure and easily accommodative to cans having different thickness at a double-seamed part to be cut with cutting-in and opening made simply and certainly, and is easily handled by any one for quick and stabilized opening of the can. SOLUTION: The can opener main body 42 comprises a guide ring 66 provided at a main shaft 65 which is capable of turning and being displaced in the axial direction, and rolls along the inner circumferential surface and the top of the double-seamed part around the drum and lid of a can, a cutter ring 67 which is arranged almost at a right angle against the guide ring and executes cutting while rolling around the outer circumferential surface of the double- seamed part, a clasping pressure-releasing mechanism 70 which is provided at the main shaft 65 and displaces the guide ring 66 in a manner of drawing and puts the cutting ring 67 in the position of cutting and displaces the guide ring in a manner of thrusting out and releases the clasping, and a rotary driving mechanism 41 which drives the main shaft 65 in rotary motion for execution of cutting. An adjustment mechanism 88 which adjusts positions for drawing-in for the guide ring 66 is provided at the clasping pressure-releasing mechanism 70.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a can opener, and more particularly, to a can opener for large or heavy cans.

[0002]

2. Description of the Related Art Conventionally, cans have been used for storing foods and the like. As shown in FIG. 4, a can body 1 and a can lid 2 are hermetically sealed by a double tightening portion 3. .

In order to take out the contents from such a sealed can, it is necessary to separate the can lid 2 from the can body 1 or to make a hole in the can lid 2. For this reason, a can opener is used.

[0004] Many conventional can openers cut the top surface of a can lid 2 inside a can body 1, and cut powder may be mixed into the contents or dust adhered to the surface of the can lid 2. May be mixed, and the cut may have sharp irregularities, possibly damaging the hands, and there is a problem that it is difficult to remove the contents.

[0005] Therefore, the double-tightened portion 3 of the can body 1 and the can lid 2
A household can opener 4 for cutting the outer peripheral surface 3a of the car is proposed. The guide car 5 and the cutting wheel 6 are used. Rolling along the inner side surface 3b and the top portion 3c of the wind-up portion 3 and pulling the guide wheel 5 by the cam mechanism 8 and pressing it with the cutting wheel 6, the outer peripheral surface of the double wind-up portion 3 The cutting wheel 6 is cut into the cutting wheel 3a and cut (for example, Japanese Patent Publication No. 52-21938).

Therefore, by using the can opener 4, the cutting powder generated by the cutting of the can lid 2 does not fall into the can body 1, and the cut end does not protrude due to sharp irregularities. And safe.

In view of the above, various can openers have been proposed which can cope with large-sized cans and can cut the outer peripheral surface 3a of the double winding portion 3. For example, FIG. 5 discloses Japanese Patent Application Laid-Open No. 7-300195. As shown in the vertical cross-sectional structure of the can opener, the opener 10 includes a block 13 that is vertically movable along a guide rod 12 erected on a fixed frame 11. A main shaft 14 is horizontally mounted on the block 13 so as to be rotatable and displaceable in the axial direction (left-right direction in the drawing). A guide wheel 15 is attached to an end of the main shaft 14 and double-tightened. Inner peripheral surface 3 of part 3
It has a conical surface that rolls along b and a column that rolls along the top 3c, and each surface has a notch. Further, a cutting wheel 16 having a rotating shaft disposed substantially perpendicular to the guide wheel 15 is provided in a concave portion below the guide wheel 15 of the block 13, and an upper edge of the double wound portion 3 is provided on a side surface of the block 13. An L-shaped can guide 17 is provided in contact with.

In order to draw the guide wheel 15 and cut the cutting wheel 16, a cam body 18 is rotatably provided at the other end (the left end in the figure) of the main shaft 14.
An end face cam 19 is formed on the surface (left end surface) of the concave portion at the center of the cam body 18, and a driven pin 20 mounted perpendicularly to the main shaft 14 comes into contact with the cam body 18 to rotate the cam body 18 by about 90 degrees in the normal rotation direction. The inter-spindle 14 is displaced so as to be retracted, and an end cam 19 is formed so that the cam body 18 and the main shaft 14 rotate integrally with each other in forward rotation. Also, two drive pins 21 are mounted on the outer periphery of the end face of the cam body 18 so as to protrude diagonally, and are mounted orthogonally to the distal end of a drive shaft 22 of a drive mechanism such as a motor with a speed reducer or a manual handle. The connecting pin 23 is positioned between the driving pins 21 and the cam body 18 can be driven to rotate by rotating the driving shaft 22 of the driving mechanism.

Therefore, even if the cam body 18 having the drive pin 21 attached to the drive shaft 22 of the fixed drive mechanism moves up and down together with the block 13, the rotational drive force can be transmitted through the connection pin 23. .

The cam body 18 includes a ratchet gear 2.
4, the ratchet 26 is attached to a handle lever 25 that rotates concentrically with the main shaft 14. The ratchet 26 is not engaged when the cam body 18 rotates forward, and the ratchet 26 is used when the handle lever 25 is rotated reversely. Is engaged with the ratchet gear 24 so that the cam body 18 can be reversely rotated integrally with the handle lever 25. The reverse rotation releases the end shaft 19 from pulling in the main shaft 14.

Next, an eccentric cam 28 is rotatably mounted on the intermediate portion of the main shaft 14 via a cylindrical body 27 as a lifting mechanism of the block 13 and is mounted above and below a plate 29 erected on the fixed frame 11. The eccentric cam 28 is located between the plate-like cam followers 30. And this eccentric cam 2
8 is attached to the handle lever 25, and by rotating the handle lever 25, the entire block 13 can be moved up and down via the main shaft 14 and the cylindrical body 27.

Further, the can opener 10 is provided with a turntable (not shown) on which the can is placed beside the fixed frame 11.

The can opener using the can opener 10 is performed as follows. First, the handle 13 is rotated to the most reversed horizontal position to raise the block 13 with the eccentric cam 28, and the main shaft 14
Release the retracted state of the guide wheel 1 from the block 13
5 is protruded, and a gap is formed between the cutting wheel 16 and the double-fastened portion 3.

In this state, the can is placed on a turntable (not shown), and the can is placed between the guide wheel 15 and the cutting wheel 16 below.
After the double winding tightening portion 3 is positioned, the handle lever 25 is rotated forward and turned to a horizontal position through a 90-degree position, and the block 13 is lowered by the eccentric cam 28, and the double winding tightening portion of the can is formed. The cylindrical portion of the guide wheel 15 comes into contact with the top 3c of the guide wheel 3, and the conical surface of the guide wheel 15 comes into contact with the inner peripheral surface 3b of the double wound portion 3, so that the can guide 17 is also double wound. It contacts the top 3c and the upper edge of the part 3.

In this state, when the drive shaft 22 of the drive mechanism is driven, the cam body 18 is rotated via the connecting pin 23 and the drive pin 21, the main shaft 14 is pulled in by the end cam 19, and the cutting wheel 16 is rotated by two. When the drive shaft 22 is further rotated after the outer peripheral surface 3a of the double-wound fastening portion 3 has been bitten, the cam 1
The spindle 8 and the main shaft 14 are integrally driven to rotate, and the guide wheel 15 and the cutting wheel 16 are rotated by the frictional force of the guide wheel 15 so as to rotate the can while relatively revolving along the double winding portion 3. Cutting is performed.

When the can has made one revolution and the entire circumference has been cut, the drive by the drive shaft 22 of the drive mechanism is stopped, and the handle lever 25 is reversed to engage the ratchet 26 with the ratchet gear 24. The cam body 18 is reversed to release the retraction of the main shaft 14 by the end face cam 19, and the block 13 is raised by the reverse rotation of the eccentric cam 28, and the guide wheel 15 and the cutting wheel 16 are raised to take out the cut can. To complete the can opener.

According to such a can opener 10, cans can be opened only by rotating the drive shaft 22 with a motor with a speed reducer or one hand while setting the can on the turntable without lifting the can. There is no need to open large cans or heavy cans for business use.

[0018]

However, in this can opener 10, since the guide wheel 15 and the cutting wheel 16 cut the double wound portion 3 while pressing it, the cutting state by the pressing is changed to the cam body 18. While the main shaft 14 is obtained by being pulled in by the end face cam 19 and the driven pin 20 of the main shaft 14, the cut state is released by reversing the cam body 18 with the ratchet gear 24 and the ratchet 26. Due to the large clamping pressure required for cutting, there is a problem that the main shaft 14 and the guide wheel 15 cannot be easily returned even if a gap is formed between the end face cam 19 and the driven pin 20. In that case it is a problem.

There is a method in which a spring is interposed to push back the main shaft and an urging force is used. However, in the case of a cutting state, a large clamping pressure is required against this urging force. There is.

In the can opener 10, the main shaft 14
The cam body 1 and the driven pin 20 carry out the drawing and release of the motor and the transmission of the driving force to the main shaft 14.
8 requires a ratchet gear 24 and a ratchet 26 as a reversing mechanism, and has a problem that the structure is complicated and the number of parts is large.

Further, the can opener 10 can open small to large cans. However, in the case of a can having different thicknesses of the double winding portion 3 serving as a cutting portion,
The position of the guide wheel 15 to be attached to the main shaft 14 needs to be adjusted by adjusting the thickness of the shim, which cannot be easily dealt with, and if this is to be confirmed, the cutting wheel 16 will be cut into the handle. After operating the lever 25, it is the same as the start of the cutting in which the drive shaft 22 is driven.
There is also a problem that skill is required for the can opener work such as the position adjustment.

The present invention has been made in view of the above-mentioned problems of the prior art, and can easily and reliably cut and release, and can easily cope with cans having different thicknesses of a double wound portion to be cut. The mechanism can be simplified,
An object of the present invention is to provide a can opener capable of performing a stable and quick opener operation.

[0023]

According to a first aspect of the present invention, there is provided a can opener provided on a main shaft which is rotatable and axially displaceable. A guide wheel that rolls along the inner circumferential surface and the top of the tightening portion, a cutting wheel that is disposed substantially at right angles to the guide wheel and cuts while rolling the outer circumferential surface of the double-tightening portion, The guide wheel provided on the main shaft is displaced so as to be retracted, the cutting wheel is pressed with the double wound portion to make the cutting wheel into a cut state, and the cutting wheel is displaced so as to push out the guide wheel. And a rotary drive mechanism for rotating and driving the main shaft to perform the can opener operation.

According to this can opener, the can shaft is provided on the main shaft which is rotatable and axially displaceable, and is provided around the can body and the can lid.
A guide wheel that rolls along the inner peripheral surface and the top of the double-wound portion, and a cutting wheel that is disposed substantially at right angles to the guide wheel and cuts while rolling the outer peripheral surface of the double-wound portion. The guide wheel provided on the main shaft is displaced so as to be retracted, the cutting wheel is pressed against the double wound portion to make the cutting wheel into a cut state, and the guide wheel is displaced so as to be pushed out to perform the cutting. It has a can opener body consisting of a press release mechanism that releases the press by the wheel and a rotary drive mechanism that drives the main shaft to rotate to open the can. Even in the case of extrusion, it can be forcibly displaced, so that cutting and release can be performed easily and reliably.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the double winding having a different thickness is adjusted by adjusting a retracted position of the guide wheel to the clamping release mechanism. It is characterized in that an adjusting mechanism that can correspond to the fastening portion is provided.

According to this can opener, the clamping release mechanism is provided with an adjusting mechanism that can adjust the retracted position of the guide wheel to accommodate the double-wound tightening portion having a different thickness. The retracting position of the guide wheel can be adjusted by the adjusting mechanism provided in the pressure releasing mechanism, and can be easily adapted to cans having different thicknesses.

According to a third aspect of the present invention, in addition to the structure of the first or second aspect, the clamping release mechanism comprises a feed screw mechanism for displacing the main shaft. The adjustment mechanism can be adjusted by a stopper mechanism that regulates the rotation position of the feed screw mechanism.

According to this can opener, the pressure releasing mechanism is constituted by a feed screw mechanism for displacing the main shaft, and the adjusting mechanism is adjusted by the stopper mechanism for regulating the rotational position of the feed screw mechanism. It is possible to forcibly perform both reciprocal displacements with the feed screw, simplify the structure, and adjust the amount of displacement easily by regulating the rotation position with the stopper mechanism. Can be easily handled, and can openers can be cut in an appropriate cutting state.

According to a fourth aspect of the present invention, in addition to the configuration according to the first to third aspects, the can opener main body is mounted on a fixed frame between a can take-out position and a can opener position. A vertically movable mechanism is provided between the main body of the can opener and the fixed frame, and the up and down drive mechanism and the pressure release mechanism are linked to each other to cut and open the can open position and the open state. This is characterized in that it is set at a can take-out position.

According to this can opener, the can opener can be vertically moved between the can take-out position and the can opener on the fixed frame, and the can opener can be moved vertically between the can opener and the fixed frame. While the mechanism is provided, the up-down drive mechanism and the pressure release mechanism are interlocked so as to be in a cutting state, a can cutting position, a release state, and a can take-out position. This makes it easier to install and take out the can, and by linking this vertical movement with the release of the clamping pressure, the can opener can be performed more easily and quickly.

According to a fifth aspect of the present invention, in addition to the configuration of the fourth aspect, the up-down drive mechanism of the can opener body comprises an eccentric cam and a cam follower. It is characterized by being linked to a feed screw mechanism.

According to this can opener, the vertical drive mechanism of the main body of the can opener is constituted by an eccentric cam and a cam follower, and this eccentric cam is interlocked with the feed screw mechanism. Can be
The eccentric cam can be operated using the rotation of the feed screw, and the can opener can be easily and quickly performed.

According to a sixth aspect of the present invention, in addition to the configuration according to any one of the first to fifth aspects, the thickness release of the double-wound tightening portion is controlled by the clamping release mechanism. It is characterized in that a shock absorbing member is provided.

According to this can opener, the clamping release mechanism is provided with a buffer member for absorbing a variation in the thickness of the double wound portion. By providing a buffer member such as a disk spring, The change in the thickness of the double-wound portion can be absorbed to smoothly perform the can opener.

Further, a can opener according to a seventh aspect of the present invention has the structure according to any one of the first to sixth aspects,
A table on which a can is placed below the can opener is rotatably provided following the cut.

According to this can opener, the table on which the can is placed is provided below the main body of the can opener so as to be rotatable following the cut, so that there is no need to lift the can and the contents can be tilted. Without spilling, it is also possible to open large and heavy cans.

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 3 relate to an embodiment of a can opener according to the present invention. FIG. 1 is an overall configuration diagram, FIG. 2 is a longitudinal sectional view partially omitted, and FIG. 3 is a schematic right side view.

The basic structure of the can opener 40 is the same as that of the can opener 10 already described with reference to FIG.
As shown in FIG. 7, a can opener main body 42 driven by a drive mechanism 41 with a manual handle, a support device 43 for supporting them, and a turntable device 44 for mounting a can are provided. 42 is provided on a fixed frame, and the fixed frame is fixed to a worktable or the like via a support device 43 by adjusting the height, and a turntable device 44 is attached to the support device 43, Of the cans placed on the turntable located at.

First, the support device 43 for fixing the can opener 40 to a worktable or the like is provided with a U-shaped fixing bracket 52 sandwiching the working table 51 up and down, and is screwed into a lower plate 53 of the fixing bracket 52. The work table 51 is sandwiched and fixed by a holding plate 55 at the top of the fixing bolt 54. A column 56 is slidably mounted on the end of the fixing bracket 52 so as to be slidable up and down. The clamp lever 57 is screwed in to adjust the height and can be fixed. A fixed frame 58 provided with the drive mechanism 42 and the drive mechanism 41 is attached.

A slit 59 is formed on the upper surface of the fixing bracket 52, and a slide block 60 of the turntable device 44 is slidably mounted thereon. A support shaft 61 is vertically attached to the slide block 60. A turntable 62 is rotatably mounted on the upper end of the support shaft 61 via a bearing.

Therefore, this turntable 62
By sliding the support shaft 61, the center of rotation can be moved, so that cans of different sizes can be accommodated.

As shown in FIG. 2, the can opener main body 42 provided on the fixed frame 58 whose height can be adjusted includes a guide rod 63 erected on the fixed frame 58.
A block 64 mounted so as to be able to move up and down along,
The main shaft 65 is mounted horizontally on the block 64, and is rotatable and displaceable in the axial direction (the left-right direction in the figure).

A male screw is formed at the end of the main shaft 65 so that a guide wheel 66 can be attached via a female screw, and two fastening tool mounting holes formed in the guide wheel 66 are used. And tighten it.

The guide wheel 66 has a conical surface 66a rolling along the inner peripheral surface 3b of the double tightening portion 3 and a cylindrical portion 66b rolling along the top 3c, and slides on each surface. Notches are formed so that they roll without any trouble.

A recess is formed below the guide wheel 66 of the block 64 and a cutting wheel 67 is provided.

The cutting wheel 67 is formed in a substantially columnar shape, and has a cutting blade 67a formed on the outer periphery of the upper portion thereof.
7b is disposed substantially at right angles to the main shaft 65, which is the rotation axis of the guide wheel 66, and is attached to the cutter holder 68.
A part of the side of 7 protrudes from the cutter holder 68 and faces the guide wheel 66 at an interval. The interval between the cutting wheel 67 and the guide wheel 66 is such that the conical surface 66a of the guide wheel 66 abuts on the inner peripheral surface 3b of the double wound portion 3 and the cylindrical portion 66b abuts on the top 3c. 6
7, the cutting blade 67a cuts into the outer peripheral surface 3a of the double wound portion 3 so that the can lid 2 can be cut.

A notch is formed on the outer periphery of the cutting blade 67a of the cutting wheel 67, so that the cut piece does not form a cut piece.

An L-shaped can guide 69 is provided on the side surface of the block 64 adjacent to the cutting wheel 67 arranged substantially at right angles to the guide wheel 66 so as to be in contact with the upper edge of the double wound portion 3. The can on the turntable 62 can be rotated in a stable state.

A pressure releasing mechanism 70 is provided in the main body 42 of the can opener in order to pull the guide wheel 66 in such a manner that the cutting wheel 67 is cut into a pressure state, or to release the pressure by the cutting wheel 67. .

The clamping release mechanism 70 enables the main shaft 65 to be forcibly displaced in both directions of pulling in and pushing out, and is constituted by, for example, a feed screw mechanism 71 as shown in FIG. .

Then, a trapezoidal screw member 72 having a trapezoidal screw formed on the outer periphery thereof constituting the feed screw mechanism 71 is rotatably mounted at an intermediate portion of the main shaft 65, and a trapezoidal screw meshing with the trapezoidal screw member 72 is formed. The feed nut 73 is fixed to the block 64 so as not to rotate.
By rotating 2, the trapezoidal screw member 72 itself can be displaced so as to reciprocate with respect to the block 64 to which the feed nut 73 is fixed.

In order to transmit the reciprocating displacement of the trapezoidal screw member 72 to the main shaft 65, a cylindrical portion is formed on a flange portion 65a formed integrally with the end (left end in the drawing) of the main shaft 65 opposite to the guide wheel 66. The left side of the center portion of the coupling 74 is connected and integrated, and a thrust bearing 75 receiving a thrust load is mounted on the inner periphery of the right side of the center portion of the coupling 74, and a disc spring 76 is mounted, The left end surface of the trapezoidal screw member 72 is in contact with the disk spring 76 via the disk spring 76.

As a driving mechanism 41 for driving the main shaft 65 to rotate, a bearing base 77 is fixed to the rear part of the fixed frame 58, and a driving shaft 79 rotatably supported by two bearings 78 is connected to the main shaft 65 in a lowered state. They are arranged to be coaxial. At the right end of the drive shaft 79, a coupling 80 that is paired with the coupling 74 at the end of the main shaft 65 is attached, and a drive pin 80a protruding at a right angle to the coupling 80 is integrally attached. On the other hand, a coupling 74 at the left end of the main shaft 65 facing the coupling 80 has two driven pins 74a at diagonal positions on the outer periphery of the end surface.
Are mounted so as to protrude rearward, and a drive pin 80a is located between these two driven pins 74a.
Can be transmitted to the main shaft 65.

The left end of the drive shaft 80 has a handle 8
1 is attached and is manually driven to rotate. Instead of a manual handle, a motor with a speed reducer may be connected and driven.

A spring plunger 82 is attached to the center of the left end of the main shaft 65, and the base end is connected to the drive shaft 79.
The main shaft 65 is constantly urged in the direction in which the main shaft 65 is pushed out of the block 64 (to the right in the drawing) by being brought into contact with and constrained by the right end surface of the main shaft 65.

Accordingly, the displacement of the trapezoidal screw member 72 in the drawing direction and the displacement in the pushing direction are transmitted to the coupling 74 via the disc spring 76 and the thrust bearing 75, and the main shaft 65 integrated therewith is moved in the drawing and pushing directions. Will be forcibly displaced.

As the vertical drive mechanism 83 for rotating the trapezoidal screw member 72 of the feed screw mechanism 71 and moving the block 64 up and down, the block 6 of the trapezoidal screw member 72 is used.
An eccentric cam 84 is rotatably mounted on a main shaft 65 located outside the frame 4, and is integrally connected to the trapezoidal screw member 72, and is a plate-like cam follower 86 mounted above and below a plate 85 erected on the fixed frame 58. The eccentric cam 84 is located between them. The eccentric cam 84 is attached to the handle lever 8.
7, the block 64 can be moved up and down together with the main shaft 65 by rotating the handle lever 87, and the trapezoidal screw member 72 of the pressure release mechanism 70 integrated with the eccentric cam 84 is rotated by the handle lever 87. Moved, spindle 6
5 can be pressed and pulled out and released by pushing.

Further, in the can opener 40, an adjusting mechanism 88 for adjusting the retracted amount of the guide wheel 66 so as to easily cope with the case where the thickness of the double winding portion 3 of the can is different.
Is provided. As shown in FIG. 3, for example, the adjustment mechanism 88 includes a handle lever 8 for rotating the trapezoidal screw member 72.
7 is constituted by a stopper bolt 89 for restricting the rotation end of
The height of the stopper bolt 89 is adjusted to a nut 90 attached to the fixing frame 58 so that the stopper bolt 89 can be fixed with a lock nut 91.

Therefore, if the height of the stopper bolt 89 is increased to reduce the amount of rotation of the trapezoidal screw member 72, the amount of the guide wheel 66 to be drawn in can be reduced to accommodate the thick double-wound portion 3, and conversely. If the height of the stopper bolt 89 is reduced, the amount by which the guide wheel 66 is drawn in can be increased, so that the guide bolt 66 can be adapted to the thin double wound portion 3.

The can opener using the can opener 40 constructed as described above is performed as follows.

First, the handle lever 87 is turned to the most reversed horizontal position on the right side in FIG.
To raise the block 64, and the trapezoidal screw member 7
2 to release the retracted state of the main shaft 65 and block 6
The guide wheel 66 is made to protrude from the cutting wheel 4, and a gap is formed between the cutting wheel 67 and the cutting wheel 67.

In this state, the can is placed almost on the center of rotation of the turntable 62 of the turntable device 44, and then the slide block 60 is moved along the slit 59 so that the lower portion between the guide wheel 66 and the cutting wheel 67 is moved downward. Is set so that the double-wound portion 3 is located at the position.

Thereafter, the handle lever 87 is rotated forward,
The stopper bolt 89 on the left side shown in FIG.
, The block 64 is lowered by the eccentric cam 84, the cylindrical portion 66b of the guide wheel 66 comes into contact with the top 3c of the double winding portion 3 of the can, and the inside of the double winding portion 3 The conical surface 66a of the guide wheel 66 comes into contact with the peripheral surface 3b, and the can guide 69 also contacts the top 3c and the upper edge of the double wound part 3.

Since the trapezoidal screw member 72 is rotated simultaneously with the lowering of the block 64, the trapezoidal screw member 72 itself is displaced with respect to the block 64, the main shaft 65 is retracted, and the cutting wheel 67 is double-tightened. The cutting edge 67 is engaged with the outer peripheral surface 3a of the portion 3 and cutting is started by the cutting blade 67a, and the cutting wheel 67 and the guide wheel 66 sandwich the double wound portion 3 therebetween.

In this state, the cutting blade 67a of the cutting wheel 67 is engaged with the outer peripheral surface 3a of the double wound portion 3 as required, and the thickness of the double wound portion 3 is determined. If the cutting blade 67a does not bite properly, the height of the stopper bolt 89 is changed and adjusted.

After the setting of the can and the setting of the guide wheel 66 and the cutting wheel 67 are completed, the handle 81 of the drive mechanism 41 is rotated by hand to rotate the drive shaft 79, and the drive pin 80a of the coupling 80 and Coupling 74
The main shaft 65 is rotationally driven via the driven pin 74a, and the guide wheel 66 and the cutting wheel 67 rotate relative to each other along the double winding portion 3 while rotating by rotating the can by the frictional force of the guide wheel 66. Orbiting and can opener.

Even if there is a change in the thickness of the double winding portion 3 of the can in the middle of the can opener, the change is absorbed by the deformation of the two disk springs 76, and the can is opened smoothly.

When the can has made one rotation and the entire circumference has been cut, the rotation of the handle 81 of the drive mechanism 41 is stopped to stop the drive of the drive shaft 79, and then the handle lever 87 is rotated in the reverse direction. The screw member 72 is reversed, the main shaft 65 is displaced in the pushing direction to release the guide wheel 66, and at the same time, the block 64 is raised by the reverse rotation of the eccentric cam 84, and the guide wheel 66, the cutting wheel 67 and the like are raised. Then, the cut can is taken out from the turntable 62 to complete the can opener.

According to the can opener 40, the guide lever 66 and the cutting wheel 67 can be moved up and down by the handle lever 87 and the pressure can be released from the double-wound tightening portion 3. In particular, only the operation of the handle lever 87 can be performed. Since the cutting blade 67a can be set up to the cutting start state, the preparation before the start of the can opening can be easily performed, and it is easy to judge whether or not the proper state is in a stationary state, and anyone can easily do without skill. Can opener work can be performed.

Also, even when the thickness of the double wound portion 3 is different, the rotating end of the handle lever 87 is
It is possible to change the retracted position of the guide wheel 66 simply by changing it at 9, and it is possible to easily cope with it, and it is possible to easily and quickly adjust to a proper state as compared with the case of adjusting with a shim.

Further, in the can opener 40, since the pressure release mechanism 70 is constituted by the feed screw mechanism 71, displacement in both directions of pressure release and release can be easily performed, so that the conventional cam body and ratchet mechanism can be used. In comparison, the mechanism can be simplified, the number of parts is small, and the cost is low.

Further, in the can opener 40, the can can be opened only by rotating the drive shaft 79 with the handle 81 in a state where the can is set on the turntable 62 without lifting the can. Even large and heavy cans can be easily opened.

In the above-described embodiment, the clamping release mechanism for forcing displacement in both the retracting and pushing directions is constituted by a feed screw mechanism using a trapezoidal screw. Other mechanisms capable of forcing displacement in both directions, such as a cam mechanism such as a cam or a gear mechanism such as a worm gear, may be used.

The vertical drive mechanism for moving up and down between the can opener position and the can take-out position is constituted by an eccentric cam. However, the present invention is not limited to this, and may be constituted by other vertical drive mechanisms such as other cam mechanisms and link mechanisms. You can also.

[0075]

According to the can opener according to the first aspect of the present invention, as described above in detail together with one embodiment, the can body and the can provided on the rotatable and axially displaceable main shaft are provided. A guide wheel that rolls along the inner peripheral surface and the top of the double-tightened portion around the lid, and cuts while rolling the outer peripheral surface of the double-tightened portion that is disposed substantially at right angles to the guide wheel; A cutting wheel, and the guide wheel provided on the main shaft is displaced so as to be retracted, and the cutting wheel is pressed with the double winding tightening portion to bring the cutting wheel into a cut state,
It has a can opener body consisting of a pressure release mechanism for displacing the guide wheel so as to push it out to release the pressure by the cutting wheel, and a rotary drive mechanism for rotating and driving the main shaft to open the can. The guide wheel can be forcibly displaced both when the guide wheel is pulled in and when it is pushed out by the pinching release mechanism, so that the can is cut easily and reliably by cutting and releasing.

According to the second aspect of the present invention, the retracting position of the guide wheel is adjusted by the clamping release mechanism so as to be able to cope with the double wound portion having a different thickness. Since the mechanism is provided, the retracting position of the guide wheel can be adjusted by the adjusting mechanism provided in the pressure release mechanism.
It can easily handle cans with different thicknesses, and can be cut in appropriate cutting conditions.

Further, according to the third aspect of the present invention, the clamping release mechanism comprises a feed screw mechanism for displacing the main shaft, and the adjusting mechanism comprises a feed screw mechanism. Rotational position can be adjusted by a stopper mechanism that regulates it, so that both displacements in both directions can be forcibly performed with the feed screw, and the structure can be simplified, and the amount of displacement can be reduced by restricting the rotation position with the stopper mechanism. Can be easily adjusted, can easily cope with cans having different thicknesses, and can be cut in an appropriate cutting state.

According to the fourth aspect of the present invention, the main body of the can opener is mounted on the fixed frame so as to be vertically movable between the can take-out position and the can opener position. An up-down drive mechanism is provided between the fixed frame and the up-down drive mechanism. The up-down drive mechanism and the pressure release mechanism are interlocked so that the cut-out state, the can-cutting position, the released state, and the can-take-out position are provided. The main body is moved up and down by an up-down drive mechanism to facilitate the installation and removal of the can. By linking this up-and-down movement with the release of the pressure, the can opener can be performed more easily and quickly.

Further, according to the can opener of the present invention, the vertical drive mechanism of the main body of the can opener is constituted by an eccentric cam and a cam follower, and the eccentric cam is interlocked with the feed screw mechanism. Therefore, the vertical drive mechanism can be simplified, the eccentric cam can be operated using the rotation of the feed screw, and the can opener can be performed easily and quickly.

Further, according to the can opener of the sixth aspect of the present invention, since the pressure release mechanism is provided with a cushioning member for absorbing a variation in the thickness of the double winding portion.
By providing a buffer member such as a disk spring,
Variations in the thickness of the double-wound portion can be absorbed to smoothly open the can.

Further, according to the can opener of the present invention, the table on which the can is placed is provided below the main body of the can opener so as to be rotatable following the cut, so that the can is lifted. It is not necessary, and can open large or heavy cans without tilting and spilling the contents.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram according to an embodiment of a can opener of the present invention.

FIG. 2 is a longitudinal sectional view in which a part of the can opener according to one embodiment of the present invention is omitted.

FIG. 3 is a schematic right side view according to an embodiment of the can opener of the present invention.

FIG. 4 is an explanatory view showing a can open state on the outer peripheral surface of a double-wound fastening portion by a conventional guide wheel and cutting wheel.

FIG. 5 is a longitudinal sectional view of a conventional can opener.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Can body 2 Can lid 3 Double winding part 3a Outer peripheral surface 3b Inner peripheral surface 3c Top 40 Can opener 41 Drive mechanism 42 Can opener main body 43 Support device 44 Turntable device 58 Fixed frame 62 Turntable 63 Guide rod 64 Block 65 Main shaft 66 Guide wheel 66a Conical portion 66b Column portion 67 Cutting wheel 67a Cutting blade 67b Rotating shaft 69 Can guide 70 Nipping release mechanism 71 Feed screw mechanism 72 Trapezoidal screw member 73 Feed nut 74 Coupling 75 Thrust bearing 76 Disk spring 79 Drive Shaft 80 Coupling 81 Handle 82 Spring plunger 83 Vertical drive mechanism 84 Eccentric cam 86 Cam follower 87 Handle lever 88 Adjustment mechanism 89 Stopper bolt

Claims (7)

[Claims] 1. A guide wheel provided on a rotatable, axially displaceable main shaft and rolling along an inner peripheral surface and a top portion of a double wound portion around a can body and a can lid, and a guide wheel. A cutting wheel arranged substantially at right angles to the outer peripheral surface of the double wound portion while rolling, and a cutting wheel provided on the main shaft and displaced so as to pull in the guide wheel. A clamping release mechanism for clamping the tightening portion to make the cutting wheel into a cut state, displacing the guide wheel so as to push it out, and releasing the clamping by the cutting wheel, and rotating the main shaft to can open the can. A can opener comprising a rotary drive mechanism for performing a can opener. 2. An adjusting mechanism according to claim 1, wherein said clamping release mechanism has an adjusting mechanism capable of adjusting a retracted position of said guide wheel to accommodate said double-wound tightening portion having a different thickness. Can opener. 3. The pressure release mechanism comprises a feed screw mechanism for displacing the main shaft, and the adjusting mechanism comprises:
3. The can opener according to claim 1, wherein the feed screw mechanism can be adjusted by a stopper mechanism that regulates a rotation position of the feed screw mechanism. 4. The can opener main body is mounted on a fixed frame so as to be vertically movable between a can take-out position and a can opener position, and a vertical drive mechanism is provided between the can opener main body and the fixed frame. The can opener according to any one of claims 1 to 3, wherein the up / down drive mechanism and the pressure release mechanism are linked to each other to set the cutting state and the can open position and the released state and the can take out position. 5. The can opener according to claim 4, wherein said vertical drive mechanism of said can opener main body comprises an eccentric cam and a cam follower, and said eccentric cam is linked to said feed screw mechanism. 6. The can opener according to claim 1, wherein the clamping release mechanism is provided with a cushioning member for absorbing a variation in the thickness of the double wound portion. 7. The can opener according to claim 1, wherein a table on which the can is mounted is rotatably provided below the main body of the can opener following the cut.