One-handed can opener

Abstract

The utility model relates to household devices for the rehabilitation of disabled people and to hand-held devices for opening cans and can be used in household conditions for opening cans by people with one healthy hand. The device contains two hingedly connected levers 1 and 2, a spring for extending them 3 and a plate guillotine knife 4. The first lever 1 is made in the form of a rocker 11, and the second lever is made in the form of a frame 12 formed by two cheeks 5 rigidly connected to each other by means of three spacers 13, 14 and 15. On the end surfaces of the cheeks 5 there are grips 6 for the seaming seam 7 of the can 8, formed by cutouts combined with pointed stops 9, which are made with the possibility of their being brought under the lower end of the seaming seam 7 of the can 8 being opened, and end stops 10 contacting with the side surface of the can.Between the cheeks 5 are mounted: on the first spacer 13, located in the lower part of the cheeks in contact with the side surface of the can, the handle 16 is pivotally mounted, on the second spacer 14, located in the upper part of the frame 12, the rocker 11 and the upper rotation limiter 17 of the handle 16 are pivotally mounted, and on the third spacer 15, installed on the protruding remote end of the frame 12, the lower rotation limiter 18 of the handle 16. The rocker 11 and the handle 16 are connected to each other by a rod 19 pivotally fixed at one end to the rocker 11 between the plate knife 4 and its pivot connection with the frame 12, and at the second end to the handle 16 between its pivot connection with the frame 12 and the rotation limiters of the handle 17 and 18, and the spring 3 for extending the levers is mounted between the handle 16 and its lower limiter 18. 1 z.p. f-ly, 11 ill.

Description

[0001] The utility model relates to household devices for the rehabilitation of disabled people and to manual devices for opening closed sealed vessels.

[0002] The utility model can be used mainly in domestic conditions for opening cans with a seal, which are designed mainly according to GOST 263 84-84, by people with one healthy hand, and can also be used in various fields of industry for manually opening closed cans with a seal.

[0003] The important values ​​for devices designed for opening cans in household conditions, used by people with one healthy hand, are their low cost, compactness, convenience and ease of use.

[0004] The BOJ 00111304 tabletop can opener (listed in the online source - https: / / www.entero.ru) is designed for opening tin cans in food service establishments. This opener comprises a stand for placing cans and a can opener, both mounted on a stand. The opener is secured to the workbench with a clamp. The can opener comprises a knife, a can gripper, and a mechanical can rotator, which is operated by a handle.

[0005] This opener is designed to allow you to open cans with one hand.

[0006] The disadvantages of this opener are its large size, complex design, and the need to firmly attach the opener to the work table, which presents certain inconveniences when using it at home.

[0007] A manual key for opening the lids of steel barrels with a lever-operated principle is known (given in the information source on the Internet - https: / / www.promnagrev.ru).

[0008] This manual wrench comprises a housing on which a hinged, extended handle (grip) with a rod, a knife, and a clamp with a barrel lid-sealing grip and a screw-driven clamping mechanism are mounted. The extended handle (grip) is positioned tangentially to the cylindrical surface of the barrel.

[0009] Using a key of a similar design in a domestic environment to open cans, primarily in accordance with GOST 26384-84, by people with one healthy hand is not possible, since in the process of opening the can it will be necessary to use the wrist of one hand to swing the extended handle (grip), ensuring that the knife cuts into the lid of the can, and simultaneously move it around the circumference of the top of the can, and use the wrist of the other hand to hold the can from tipping over.

[0010] The closest in its technical essence to the claimed device is a device for opening seamed cans with one hand (Patent RU No. 240537, IPC B67B 7 / 54), which is made in the form of two intersecting hinged levers, the long ends of which are made with the possibility of gripping and closing them with a hand and are provided with a spring for extending them, while at the end of the rectangular shape of the upper short end of the first lever, a plate guillotine knife with a double-sided sharpening of the blade is mounted by means of fasteners, and the lower short end of the second lever is made in the form of two plate cheeks, on the end surfaces of which grips of the seaming seam are made from its inner side in the form of cutouts - shaped, having at the entrance to the cutouts a size exceeding the thickness of the seam by fractions of a millimeter, and in the recess of the cutouts a size allowing the free placement of the seam in them in any position, combined with pointed stops with the possibility of the latter being fed under the lower end of the seam of the opened can, in addition, on the end surfaces of the cheeks in the upper part there are rounded protrusions with a radius corresponding to the height of the seam, starting from the vertical rectilinear part of the cutouts - shaped and not exceeding the height of the seam, and at the bottom of the ends of the cheeks there are end stops beveled at a slight angle with the possibility of their contact with the side surface of the can, while when placing the seam in the cutouts - shaped, when the beveled end stops of the cheeks are pressed against the side surface of the can and when the long ends of the levers are closed by the force of the hand, the knife has the ability to move between the cheeks and cut into the lid of the can in the area of ​​the inner surface of the seaming seam.

[0011] The disadvantage of this device is that it is designed mainly for opening the most commonly used household seaming cans according to GOST 26384-84 with an outer diameter of ~ 63, 76, (77.4), 87 and 95 mm., having almost the same height and thickness of the seaming seam and a lid tin thickness within 0.18 ... 0.22 mm. When using this device to open cans according to GOST 26384-84 with an outer diameter of ~ 104, 158, 220 and 228 mm, having a lid tin thickness within 0.25 ... 0.36 mm, it is necessary to apply significant squeezing forces to the long ends of the levers with the hand, which is not always possible for weakened people. In addition, with the thickness of the lid sheet metal within the range of 0.25...0.36 mm, the thickness of the seam will vary within the range of 1.25...1.9 mm, and make cutouts on the cheeks - shaped, having a size at the entrance to the cutouts that exceeds the thickness of the seam by fractions of a millimeter, the same for all cans with an outer diameter equal to ~ 104, 158, 220 and 228 mm, is not desirable, since the capture of the seam may not be reliable.

[0012] The essence of the proposed utility model is that, unlike the closest in its technical essence device for opening cans with one hand (Patent RU No. 240537, IPC B67B 7 / 54), in the proposed device:

[0013] - the first lever is made in the form of a rocker, and the second lever is made in the form of a frame formed by two cheeks rigidly connected to each other by means of three spacers;

[0014] - on the frame between the cheeks are mounted: on the first spacer, located in the lower part of the cheeks in contact with the side surface of the can, a hinged handle, the free end of which rises above the upper end of the can being opened, on the second spacer located in the upper part of the frame, a hinged rocker and an upper limiter of rotation of the handle, and on the third spacer, installed on the protruding remote end of the frame, a lower limiter of rotation of the handle;

[0015] - the rocker and the handle are connected to each other by a rod pivotally fixed at one end by means of the upper axle with the rocker between the plate knife and its pivot connection with the frame, and at the other end by means of the lower axle with the handle between its pivot connection with the frame and the handle rotation limiters;

[0016] - the lever extension spring is mounted on the lower axis of the rod between the handle and its lower stop;

[0017] - the pointed stops are designed with the possibility of their removal and changing the size at the entrance by installing pointed stops of different sizes.

[0018] This design of the device allows you to replace the compressive force of the hand levers with a rocking movement of the handle with the hand, thereby significantly facilitating the process of opening cans, and also ensure the functionality of one device for opening cans with an outer diameter of ~ 104, 158, 220 and 228 mm by replacing the pointed stops of one size with others.

[0019] The main task that the claimed utility model is aimed at solving is to facilitate the process of opening cans with increased thickness of the tin lid of the can with one hand.

[0020] The technical result is achieved in that in a device for opening seamed cans with one hand, containing two hingedly connected levers, a spring for extending them, a plate guillotine knife mounted on the end of the first lever, two plate cheeks at the second lever, on the end surfaces of which grips of the seaming seam are made, formed by cutouts combined with pointed stops, which are made with the possibility of their being fed under the lower end of the seaming seam of the can being opened, wherein the rectilinear parts of the cutouts are made with the possibility of resting against the inner part of the seaming seam of the can being opened and the end stops with the possibility of their contact with the side surface of the can:

[0021] - the first lever is made in the form of a rocker, and the second lever is made in the form of a frame formed by two cheeks rigidly connected to each other by means of three spacers, while between the cheeks are mounted: on the first spacer, located in the lower part of the cheeks in contact with the side surface of the can, a hinged handle, the free end of which rises above the upper end of the can being opened, on the second spacer, located in the upper part of the frame, a hinged rocker and an upper limiter of rotation of the handle, and on the third spacer, installed on the protruding remote end of the frame, a lower limiter of rotation of the handle, while the rocker and the handle are connected to each other by a rod pivotally fixed at one end by means of the upper axis with the rocker between the plate knife and its hinged connection with the frame, and at the second end by means of the lower axis with the handle between its hinged connection with the frame and the limiters of rotation of the handle,and the lever extension spring is mounted on the lower axis of the rod between the handle and its lower stop;

[0022] - the pointed stops are designed with the possibility of their removal and changing the size at the entrance by installing pointed stops of different sizes.

[0023] The claimed utility model is explained by drawings, where Fig. 1 and 2 show a general view of a device for opening rolled-up cans with one hand with the can placed on a table with a horizontal stop, Fig. 3, 4, 5, 6, 7 and 8 show the design elements of the device, Fig. 9 shows the installation of the device on a can, Fig. 10 shows the final position of the device levers when cutting the knife into the lid, and Fig. 11 shows the rotation of the device on the can during the process of cutting off the lid.

[0024] A device for opening seamed cans with one hand comprises two hingedly connected levers 1 and 2, a spring 3 for extending them, a plate guillotine knife 4 mounted on the end of the first lever 1 (Fig. 1), two plate cheeks 5 at the second lever 2 (Fig. 5), on the end surfaces of which grips 6 are made for the seaming seam 7 of the can 8 formed by cutouts combined with pointed stops 9, which are made with the possibility of their being fed under the lower end of the seaming seam 7 of the can being opened, wherein the rectilinear parts of the cutouts 6 are made with the possibility of resting against the inner part of the seaming seam 7 of the can being opened, and end stops 10 with the possibility of their contact with the side surface of the can 8 (Fig. 4).

[0025] The first lever 1 is made in the form of a rocker 11, and the second lever is made in the form of a frame 12 formed by two cheeks 5 rigidly connected to each other by means of three spacers 13, 14 and 15 (Fig. 3, 5 and 7).

[0026] Between the cheeks 5 there are mounted: on the first spacer 13, located in the lower part of the cheeks 5 in contact with the side surface of the can, a hinged handle 16, the free end of which rises above the upper end of the can 8 being opened (Fig. 3), on the second spacer 14, located in the upper part of the frame 12, a hinged rocker and an upper rotation limiter 17 of the handle 16, and on the third spacer 15, installed on the protruding remote end of the frame 12, a lower rotation limiter 18 of the handle 16 (Fig. 3, 5 and 7).

[0027] The rocker 11 and the handle 16 are connected to each other by a rod 19, pivotally fixed at one end by means of the upper axis 20 with the rocker 11 between the plate knife 4 and its pivot connection with the frame 12, and at the second end by means of the lower axis 21 with the handle 16 between its pivot connection with the frame 12 and the handle rotation limiters 17 and 18, and the spring 3 for extending the levers is mounted on the lower axis 21 between the handle 16 and its lower limiter 18 (Fig. 3, 6 and 7).

[0028] The pointed stops 9 are designed with the possibility of being removed and changing the size L at the entrance to the cutouts 6 by installing pointed stops of different sizes depending on the thickness S of the seaming seam 7 (Fig. 4).

[0029] Implementation of a device for opening cans with one hand.

[0030] In the proposed utility model, the rocker 11 and handle 16 of the device are made of a U-shaped steel profile. The cheeks 5 of the frame 12 and the rod 19 are made of sheet steel.

[0031] The lever extension spring 3 is made of spring wire. The plate guillotine knife 4 and pointed stops 9 are made of hardened steel.

[0032] Before opening a can, in accordance with GOST 26384-8 4, the required size of pointed stops 9 is installed:

[0033] - for cans with an outer diameter D equal to ~ 63, 76, (77.4) and 87 mm, having almost the same thickness S of the seaming seam equal to ~ 1.2 mm, the first standard size of pointed stops 9 is installed, ensuring the size L at the entrance to the cutouts of the grippers 6 within the range of 1.25...1.35 mm;

[0034] - for cans with an outer diameter D equal to ~ 95 and 104 mm, having almost the same thickness S of the seam equal to ~ 1.5 mm, a second standard size of pointed stops 9 is installed, ensuring the size L at the entrance to the cutouts of the grippers 6 within the range of 1.55...1.65 mm;

[0035] - for cans with an outer diameter D equal to ~ 158 mm, having a seam thickness S equal to ~ 1.7 mm, the third size of pointed stops 9 is installed, ensuring the size L at the entrance to the cutouts of the grippers 6 within the range of 1.75...1.85 mm;

[0036] - for cans with an outer diameter D equal to ~ 220 and 228 mm, having almost the same thickness S of the seam equal to ~ 1.9 mm, the fourth standard size of pointed stops 9 is installed, ensuring the size L at the entrance to the cutouts of the grippers 6 within the range of 1.95 ... 2.05 mm.

[0037] Opening a can 8 using a device is carried out as follows.

[0038] The can 8 is placed on the edge of the table 22, which has a rough working surface and a stop 23 for the can in the horizontal direction (Fig. 1, 2).

[0039] The device is installed on the can 8 by holding it with the wrist of one hand (Fig. 9) and turning it to a position in which the seaming seam 7 of thickness S enters the notches of the grips 6. After which the device is turned to a position in which the end stops 10 touch the side surface of the can 8 (Fig. 10). In this case, the straight parts of the notches of the grips 6 rest against the inner part of the seaming seam 7, and the pointed stops 9 are brought under the lower end of the seaming seam 7 of the can 8 being opened (Fig. 4).

[0040] Next, when the end stops 10 of the cheeks 5 are pressed against the side surface of the can 8 and when the handle 16 is rocked downwards by the force of the hand until it stops against the lower limiter 18, the rod 19, pivotally fixed on the handle, pulls the rocker 11 downwards and at the same time the knife 4 moves between the cheeks 5, cuts into the lid 24 of the can 8 in the area of ​​the inner surface of the seaming seam 7 and the lid 24 is cut (Fig. 10). During the piercing process with the knife 4 and the cutting, an overturning moment acts on the can 8 in the direction of the arrow K (Fig. 1), therefore, to prevent the can 8 from overturning, it is pressed by the device to the working surface of the table 22 and to the stop 23 in the horizontal direction.

[0041] After cutting the lid 24 to the width of the knife 4, levers 1 and 2 are released by removing the force of the hand from the handle 16 and, under the action of the spring 3, the handle 16 returns to its original position and rests against the upper stop 17. Then, the device is slightly turned in the vertical direction until contact between the end stops 10 and the side surface of the can 8 is excluded and a horizontal turn of the device is made in the direction of the arrow L, by an angle α corresponding to the width of the guillotine part of the knife 4 (Fig. 11), while slightly pressing the device towards the can 8 and, accordingly, towards the working surface of the table 22. Then, the end stops 10 of the cheeks 5 are again pressed towards the side surface of the can 8 and the device is used to turn the can by an angle α to the initial horizontal position of the device (Fig. 11).

[0042] Then the process of cutting the lid 24 of the can 8 is repeated and continues until it is cut off, after which the device is removed by turning it in the vertical direction from the can 8 (Fig. 9).

[0043] Thus, the proposed device, despite the complexity of the described process of its use, but with a little skill, will allow you to open cans with an increased thickness of tin lid with one hand easily and quickly.

Claims

1. A device for opening seamed cans with one hand, comprising two hingedly connected levers, a spring for extending them, a plate guillotine knife mounted on the end of the first lever, two plate cheeks at the second lever, on the end surfaces of which grips for the seaming seam are made, formed by cutouts combined with pointed stops, which are made with the possibility of their being fed under the lower end of the seaming seam of the can being opened, wherein the rectilinear parts of the cutouts are made with the possibility of resting against the inner part of the seaming seam of the can being opened and end stops with the possibility of their contact with the side surface of the can, characterized in that the first lever is made in the form of a rocker, and the second lever is made in the form of a frame formed by two cheeks rigidly connected to each other by means of three spacers, while between the cheeks are mounted: on the first spacer located in the lower part of the cheeks,contacting the side surface of the can, a hinged handle, the free end of which rises above the upper end of the can being opened, on a second spacer located in the upper part of the frame, a rocker and an upper limiter of rotation of the handle are hinged, and on a third spacer installed on the protruding remote end of the frame, a lower limiter of rotation of the handle, wherein the rocker and the handle are connected to each other by a rod, pivotally fixed at one end by means of an upper axle with the rocker between the plate knife and its hinged connection with the frame, and at the second end by means of a lower axle - with the handle between its hinged connection with the frame and the limiters of rotation of the handle, and the spring for extending the levers is mounted on the lower axle of the rod between the handle and its lower limiter.

2. A device for opening cans with one hand according to paragraph 1, characterized in that the pointed stops are designed with the possibility of being removed and changing the size at the entrance by installing pointed stops of different sizes.

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