JPH0433280Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to an electric can opener for cutting can lids of canned goods.

[Conventional technology]

A conventional electric can opener is, for example,
As shown in the publication, there is provided a lever part that is rotatably supported and has a cutting blade attached thereto, a seesaw type switch, and a feed gear located on the side of the cutting blade that rotates the canned food in a desired direction. There is also known a spring that is partially abuttable to the lever portion and partially abuttable to the switch. In this electric can opener, the brim of a canned food is sandwiched between the feed gear and the cutting section, and the spring is elastically deformed by a lever section that is pushed down by the cutting force acting on the cutting blade when the switch is turned on. By bringing the switch into contact with the switch, the switch is kept in the ON state, and when the cutting force disappears as the can opener is finished, the spring is released from contact with the switch, turning the switch OFF. I'm letting you do it.

[Problem that the idea aims to solve]

However, in order to make the cutting blade cut into the can lid, the can itself must be rotated in the required direction and the cutting blade must be brought into pressure contact with the can. Since there is no elastic member for biasing the lever part in the cutting direction, the switch must be turned on while maintaining the lever part in a rotationally biased state. For this reason, when opening cans, both hands had to be used, making it difficult to keep the cans stuck between the cutting blade and the feed gear in a stable state, making it difficult to open cans smoothly. .

[Purpose of invention]

The present invention was devised to solve the above-mentioned conventional drawbacks, and its purpose is to make it possible to hold a canned food in one hand while turning the switch on with the other hand. Automatically turns off the switch when the can opener is finished.
An object of the present invention is to provide an electric can opener that can be operated and can efficiently perform can opener work.

[Means to solve the problem]

Therefore, the present invention comprises a feed gear that engages with the lower end surface of the curl of the can lid and rotates the can in a desired direction, an electric motor that rotationally drives the feed gear, and a can that is supported by the feed gear. It is rotatably supported between a cutting position corresponding to the lid and a non-cutting position spaced apart from the can, and a cutting blade is attached to the tip corresponding to the feed gear, and a cutting blade is attached to the shaft at the base end. , an operating lever having a cam and a locking portion that gradually becomes larger in diameter in a direction opposite to the direction of rotation with respect to the cutting position; and the operating lever is moved to a non-cutting position where the cutting blade and the can lid are separated from each other. When rotated, one end of the cam comes into contact with the outer circumferential surface of the cam which is in a substantially horizontal state due to its elastic force, thereby placing the operating lever in a non-rotating biased state, while the operating lever moves between the cutting blade and the can lid. When the one end is rotated to a cutting position where the two ends come into contact with each other, one end is elastically deformed as it comes into sliding contact with the cam, and then engages with the engaging portion, and the elastic force accompanying the elastic deformation cuts the operating lever. The cutting blade is urged to rotate toward the position side to maintain the state of contact between the cutting blade and the can lid, and when the operating lever is further rotated in the non-cutting direction, one end engages as it slides into contact with the engaging part. a first elastic member that is elastically deformed in the direction of engagement and disengaged from the engagement portion and positioned on the outer peripheral surface of the cam by its elastic force; a power switch that drives the electric motor; and a power switch that drives the electric motor; The operating lever is rotatably supported between the ON position where the power switch is turned ON and the OFF position where the power switch is turned OFF, and the tip thereof touches the lever, and the operating lever is not always connected to the power source.
a second elastic member biasing toward the OFF position;
In the middle of cutting the can lid, the operating lever is rotated to the cutting position by the cutting load acting on the cutting blade, and the operating lever is rotated to the power ON position to maintain the power switch ON and to stop the can lid. When the cutting of the lid is finished and the cutting load acting on the cutting blade disappears, the power switch is turned off via an actuation lever that is rotated to the power off position by the elastic force of the second elastic member. It is characterized by

[Effect of invention]

In the present invention, when the operating lever is rotated toward the non-cutting position, the first elastic member maintains the non-biased state. When the operating lever is rotated toward the cutting position in the above state, the operating lever is elastically deformed as it comes into sliding contact with the cam, and is cut by the elastic force of the first elastic member engaged with the engaging portion. The cutting blade is urged toward the position side, and the state of pressure contact of the cutting blade against the can is maintained. When the power switch is operated in this state, the operating lever that comes into contact with the tip of the operating lever is rotated toward the power ON position. When the cutting blade is brought into pressure contact with the top surface of the can while the can is rotated in a predetermined direction by the rotationally driven electric motor, the cutting blade automatically bites into the can and then cuts the can. At this time, the rotational state of the operating lever relative to the cutting position is maintained by the load acting on the cutting blade, so that the ON state is maintained even when the power switch is not operated. When the cutting of the canned food is finished, the load on the cutting blade is removed, and the operating lever automatically rotates to the power OFF position by the elastic force of the second elastic member.
Turn off the power switch and stop the rotation of the canned food. When the operating lever is rotated toward the non-cutting position after cutting is completed, the first elastic member is elastically deformed in the direction in which the engagement with the engagement portion is released due to contact with the engagement portion. After releasing the engaged state by
Due to its elastic force, it is elastically returned to be located on the outer peripheral surface of the cam. As a result, the operating lever is rotated and held toward the non-cutting position.

【Example】

An embodiment of the present invention will be described below. Fig. 1 is a perspective view schematically showing the electric can opener, Fig. 2 is an exploded perspective view showing the structure of the electric can opener with the rear case removed, and Fig. 3 shows the supported state of the operating lever. FIG. 4 is a perspective view showing the interlocking state of the operating lever. A case 3 of the electric can opener 1 is composed of a front case 5 and a rear case 7 made of synthetic resin. Inside the front case 5 is a drive gear 9.
It is rotatably supported by a boss 11 formed integrally with the front case 5. The drive gear 9 includes an electric motor 13 built in the front case 5, and gears 15,
17, and as the electric motor 13 is driven, the driving gear 9 is rotated in a desired direction at a desired reduction ratio. A feed gear 19 is attached to the shaft end of the drive gear 9 protruding from the front surface of the front case 5. A step portion 5a is formed in the upper part of the front case 5, and an opening (not shown) is formed in the flat surface of the step portion 5a. A push button 23, which constitutes a part of a power switch, is loosely fitted into the opening. A lever 25a of a power switch 25 fixed to the front case 5 is connected to the push button 23, and the power switch 25 is turned on by pressing the push button 23.
be done. An operating lever 29 is pivotally supported on the inner surface of the front case 5 so as to be rotatable around a pin 27 integrally formed with the front case 5. The operating lever 29 has its free end connected to the lever 2 of the power switch 25.
5a. A compression spring 71 as a second elastic member is attached between the power switch 25 and an actuation piece 35 to be described later, and the elastic force of the compression spring 71 always keeps the actuation lever 29 in the power OFF position. Rotation is biased. Further, an elongated hole 31 that is elongated in the vertical direction is formed in the middle portion of the operating lever 29, and a support shaft 33 provided on the front case 5 is slidably supported in the elongated hole 31. Further, an actuating piece 35 is provided on the front surface of the intermediate portion of the actuating lever 29, and an opening 37 provided in the front case 5 is provided.
It is integrally formed so as to protrude to the front of the front case 5 with a required width through the front case 5. The front case 5 has an operating lever 45 which will be described later.
A bearing portion 39 is provided. The bearing portion 39 is a locking piece 4 integrally formed on the shaft end of the operating lever 45.
5c, and a small diameter recess 39b with an inner diameter corresponding to the shaft of the operating lever 45.
and a support portion 39 that comes into contact with the shaft end of the operating lever 45.
c, a notch 39d for enabling the locking piece 45c to be hooked in the small diameter recess 39b, and a protrusion 39e integrally formed on the support portion 39c corresponding to the small diameter recess 39b. . Further, a spring 43 as a first elastic member whose one end is hooked to the boss 41 is attached to the front case 5.
The other end is attached so as to extend to the cam portion 45f of the operating lever 45. That is, as shown in FIG. 3, one end is connected to the boss 4.
The spring 43 that is locked to the boss 11 extends upward.
The cam portion 45 of the operating lever 45 is turned left and right by the lever, then turned upward by the boss 12, and the other end is rotated to the non-cutting position.
It is bent and formed so as to be located on f. An operating lever 45 is supported by the bearing portion 39 so as to be rotatable about 90 degrees horizontally from above. The operating lever 45 has a shaft portion 45a and an operating piece 45.
A locking piece 45c having a diameter larger than that of the shaft portion 45a is integrally formed at the end of the shaft portion 45a. Further, a cam portion 45 is provided on a part of the hooking piece 45c.
The cam portion 45f has an engaging portion 45 on the large-diameter end surface.
d is provided. and the operating lever 45
When the lever 45 is rotated toward the non-cutting side, the other end of the spring 43 comes into contact with the outer peripheral surface of the cam portion 45f, and when the operating lever 45 is rotated toward the cutting side, the other end of the spring 43 comes into contact with the outer peripheral surface of the cam portion 45f. The operating lever 45 is urged to rotate toward the cutting side via the engaging portion 45d that engages with elastic force due to elastic deformation. A pressing piece 45e is integrally formed at the tip of the operating piece 45b. The pressing piece 45e is activated when the operating lever 45 is rotated in the horizontal direction.
The actuating lever 29 is moved to the second position by pressing against the actuating piece 35.
Rotate it counterclockwise as shown in the figure. Note that a cover 47 is provided on the front side of the case 5.
It is integrally formed to allow entry of the pressing piece 45e and to cover the actuating piece 35. A cutting blade 49 is attached to the operation piece 45b, and when the operation lever 45 moves to the cutting side, the feed gear 1
It is fixed so that it is located on the front side of 9. In addition, an elastic piece 51 is attached to the operating piece 45b at a point in front of the cutting blade 49 in the direction of rotation of the canned food 53.
It is attached so as to be in contact with the upper end surface of the curled portion 53a of No. 3. An arm 55 is rotatably supported on the front surface of the operating piece 45b, and a support shaft 57 is attached to the tip of the arm 55. A suction cup 59 is attached to the support shaft 57 via a coil spring 61. The suction cup 59 attracts the can lid 53b when the can lid 53b is cut. A large number of guide protrusions 63 are integrally formed on the front surface of the front case 5 with a protrusion width corresponding to the front surface of the feed gear 19, and are brought into contact with the outer peripheral surface of the can body 53c when the can 53 is cut. The canned food 53 is rotationally guided. Next, electric can opener 1 configured as described above
The operation will be explained with reference to FIGS. 5 to 12. When the operating lever 45 is rotated to the non-cutting position, the other end of the spring 43 is in contact with the cam portion 45f which is deviated in a substantially horizontal state, as shown in FIG. Therefore, the operating lever 45 is rotatably held in the non-cutting position by the elastic force of the spring 43. Next, in the above state, the curl portion 5 is attached to the feed gear 19.
When the operating lever 4 is engaged with the lower end surface of 3a,
5 is rotated toward the cutting position side (clockwise as shown in FIG. 6), the other end of the spring 43 slides into contact with the cam portion 45f and the boss 12 is rotated as shown in FIG.
It is elastically deformed upwards with the other end moving toward the left side as shown in FIG. When the operating lever 4 is further rotated toward the cutting position, the other end of the spring 43 is elastically deformed and overcomes the engaging portion 45d, as shown in FIG. The accompanying elastic force urges the operating lever 45 to rotate toward the cutting position. As a result, the cutting blade 49 of the operating lever 45 is pressed against the can lid 53b of the can 53. When the push button 23 is pressed after the suction cup 59 is attracted to the can lid 53b in the above state, the feed gear 19 is rotated in a predetermined direction by the driven electric motor 13 to rotate the can 53. As the can 53 rotates, the cutting blade 49, which is biased by the elastic force of the spring 43, bites into the can lid 53b, and then cuts the can lid 53b. When cutting the can lid 53b described above, a cutting load acts on the cutting blade 49, causing the operating lever 45 to further rotate clockwise as shown in FIGS. 5 and 9. Due to the above action, the pressing piece 45e and the actuating piece 35 come into pressure contact with each other to rotate the actuating lever 29. This maintains the rotating state of the operating lever 29, so that the ON operating state of the power switch 25 is maintained. When the can lid 53b is cut by the above operation, the cutting load acting on the cutting blade 49 is reduced, so the operating lever 45 is slightly returned counterclockwise. As a result, as shown in FIG. 8, the pressure contact between the pressing piece 45e and the actuating piece 35 is released, and the actuating lever 29, which rotates in the opposite direction, turns off the power switch 25, thereby stopping the rotation of the canned food 53. interrupt. Next, after cutting the can lid 53b, the operating lever 4
The case of returning 5 to the non-cutting position will be explained. When the operating lever 45 is rotated from the cutting position to the non-cutting position, the other end of the spring 43 is engaged with the engaging portion 45d, as shown in FIG.
It is elastically deformed counterclockwise around the boss 11.
As shown in FIG. 11, when the other end of the spring 43 is positioned on the outer circumferential side of the engaging portion 45d, the locking state between the other end and the engaging portion 45d is released, and then as shown in FIG. As shown in FIG. 3, the other end comes into contact with the cam portion 45f due to the elastic force accompanying the elastic deformation. As a result, the spring 43 holds the operating lever 45 in the non-cutting position by the other end that contacts the cam portion 45f. In this way, in this embodiment, the actuating piece 35 is activated by the cutting load acting on the cutting blade 49 when cutting the can lid 53b.
The power switch 25 is kept in the ON state by rotating the operating lever 29 with the push button 45e in contact with the push button 45e, and the rotation of the can 53 is continued even when the push button 23 is not pressed. The lid 53b can be cut. Then, when the can lid 53b is cut, the cutting blade 49
Since the cutting load acting on the actuating lever 29 is reduced and the contact between the actuating piece 35 and the pressing piece 45e is released, the power switch 25 is turned on by the actuating lever 29 returning to its original position.
Activate OFF. As a result, after cutting the can lid 53b, the power switch 25 is automatically turned on.
The rotation of the canned food 53 can be interrupted by turning OFF.

[Effect of the idea]

In this way, this invention allows you to hold the canned food in one hand while turning the switch on with the other hand, and also automatically turns the switch off when the can opener is finished. Accordingly, it is possible to provide an electric can opener that can efficiently perform can opener work.

[Brief explanation of the drawing]

Fig. 1 is a perspective view schematically showing the electric can opener, Fig. 2 is an exploded perspective view showing the structure of the electric can opener, Fig. 3 is a perspective view showing the support state of the operating lever, and Fig. 4 is a perspective view showing the structure of the electric can opener.
The figure is a perspective view showing the interlocking state of the power switch.
Figures 1 to 12 are explanatory diagrams showing the operation. In the figure, 1 is an electric can opener, 3 is a case, 13 is an electric motor, 19 is a feed gear, 25 is a power switch as a switching means, 45 is an operating lever, 45
d is an engaging part, 49 is a cutting blade, 53 is a canned food, 53a
53b is a curled portion, and 53b is a can lid.

Claims (1)

[Scope of Claim for Utility Model Registration] A feed gear that engages with the curled lower end surface of a can lid and rotates the can in a desired direction, an electric motor that rotationally drives the feed gear, and a can supported by the feed gear. It is rotatably supported between a cutting position corresponding to the can lid and a non-cutting position separated from the can, and a cutting blade is attached to the tip corresponding to the feed gear, and a shaft at the base end an operating lever having a cam and an engaging portion that gradually becomes larger in diameter in a direction opposite to the direction of rotation with respect to the cutting position; When the lever is rotated, one end of the lever comes into contact with the outer circumferential surface of the cam which is in a substantially horizontal state due to its elastic force, causing the operating lever to be in a non-rotating biased state, while the operating lever is not connected to the cutting blade. When the can lid is rotated to the cutting position in contact with the can lid, one end is elastically deformed as it comes into sliding contact with the cam and then engages with the engaging portion, and the elastic force accompanying the elastic deformation causes the operating lever to close. is rotated toward the cutting position to maintain the state of contact between the cutting blade and the can lid, and when the operating lever is rotated in the non-cutting direction, one end slides into contact with the engaging part. a first elastic member that is positioned on the outer circumferential surface of the cam by the elastic force of the first elastic member after the first elastic member is elastically deformed in the disengagement direction to release the engagement state with the engagement portion; and a power switch that drives the electric motor; an operating lever whose tip abuts the operating lever and is rotatably supported between an ON position where the power switch is turned ON and an OFF position where the power switch is turned OFF; and a second elastic member biased toward the OFF position, and during cutting of the can lid, the power is turned to the ON position via the operating lever that is rotated toward the cutting position due to the cutting load acting on the cutting blade. The power switch is kept in the ON state by the rotating operating lever, and when the cutting load on the cutting blade is removed after cutting the can lid, the power is turned off by the elastic force of the second elastic member. An electric can opener characterized in that the power switch is turned off via an operating lever that rotates to a position.