Patent Application
20100031832
1. Field of Invention
The invention relates to a can presser and, in particular, to a can presser structure that presses an empty can to reduce its storage space.
2. Related Art
The purpose of resource recycling is to recycle certain trashes after classification and to reuse them. After continual propaganda, the concept of classifying and recycling trashes has, been established among citizens. The amount of trashes has largely reduced.
Among recycled trashes, empty cans made of iron and aluminum usually occupy a lot of space because of their sizable volumes. This is particularly inconvenient in transportation. Therefore, people often step empty cans flat to reduce the space occupied by them. However, such flattened empty cans do not have a uniform shape. Moreover, people may get hurt when stepping them flat.
In view of the foregoing, an objective of the invention is to provide a can presser that presses an empty can to reduce its size.
To achieve the above-mentioned objective, the disclosed can presser has a frame, a movable pressing board, and a driving component. The frame has a front fixing board, a back fixing board, and several guiding posts extended and disposed between the front and back fixing boards. The movable pressing board is disposed between the front and back fixing boards of the frame via the guiding posts. The driving component drives the movable pressing board to perform a reciprocal displacement between the front and back fixing boards.
When the movable pressing board moves toward the back fixing board and reaches a back stop point, the space between the front fixing board of the frame and the movable pressing board accommodates an empty can. As the movable pressing board moves toward the front fixing board to a front stop point, the empty can is gradually squeezed to reduce its volume. After the movable pressing board reaches the front stop point, the driving component drives the movable pressing board to move toward the back fixing board. Afterwards, the squeezed empty can is taken out.
The invention will become more fully understood from the detailed description given herein below illustration only, and thus is not limitative of the present invention, and wherein:
The present invention will be apparent from the following detailed description, which proceeds with reference to the accompanying drawings, wherein the same references relate to the same elements.
As shown in
The frame 10 has a front fixing board 11 and a back fixing board 12. Besides, several guiding posts 13 extend between the front and back fixing boards 11, 12. In practice, the frame 10 further has several supporting rods 14 on the back fixing board 12 extending toward the front fixing board 11 to support an empty can 50. Each supporting rod 14 preferably keeps a distance from the front fixing board 11, so that the squeezed empty can 50 can fall through the space between the supporting rods 14 and the front fixing board 11.
The movable pressing board 20 is disposed between the front and back fixing boards 11, 12 of the frame 10 using the guiding posts 13. Several conic protrusions 21 are formed on the surface of the movable pressing board 20 that faces the front fixing board 11 for piercing the empty can 50.
The driving component 30 makes the movable pressing board 20 perform a reciprocal displacement between the front and back fixing boards 11, 12 along the guiding posts 13. In practice, the driving component 30 has chain gears 31 at the front and back fixing boards 11, 12 of the frame 10, respectively. A chain 32 connected with the movable pressing board 20 winds around the two chain gears 31. A motor 33 and a speed reducing gear set 34 are provided to rotate the chain gears forward and backward, achieving the goal of making the movable pressing board 20 perform the reciprocal displacement between the front and back fixing boards 11, 12 along the guiding posts 13.
Furthermore, the driving component 30 has a front magnetic switch 35 and a back magnetic switch 36 on both ends of the guiding posts 13 near the front and back fixing boards 11, 12. The front and back magnetic switches 35, 36 act under the influence of a magnet on the movable pressing board 20 as it approaches them. They control the driving component 30 so that the movable pressing board 20 stops at those positions. By changing the positions of the front and back magnetic switches 35, 36, one can adjust the front and back stop points of the movable pressing board 20.
When the movable pressing board 20 moves toward the back fixing board 12 to the back stop point, the space between the front fixing board 11 of the frame 10 and the movable pressing board 20 accommodates the empty can 50. As the movable pressing board 20 moves toward the front fixing board 11 to reach the front stop point, the empty can 50 is gradually squeezed to reduce its size. After the movable pressing board 20 moves toward the front fixing board and reaches the front stop point, the driving component 30 brings the movable pressing board 20 backward toward the back fixing board 12. The squeezed empty can is then taken out.
In addition to the front and back stop points, the disclosed can presser has a plurality of buffer pads 15 on the surfaces of the front and back fixing boards 11, 12 that face the movable pressing board 20. They prevent the movable pressing board 20 from colliding with the front and back fixing boards 11, 12.
Moreover, the movable pressing board 20 further has a ball protrusion 22 on the surface facing the front fixing board 11 in addition to the conic protrusions 21, as shown in
Please refer to
The upper shell 41 has an opening 411 for the insertion of the empty can 50. The lower shell 42 has an exit opening 421 for the empty can 50 to exit. The flip cover 43 is provided at the opening 411 on the upper shell 41, covering the opening 411. A button 412 that determines whether the flip cover 43 can be opened is provided on the upper shell 41.
Besides, two sliding bases 44 connecting with the flip cover 43 are provided in the case 40 correspondingly below the opening 411 of the upper shell 41. More explicitly, the two sliding bases 44 are provided on both sides below the opening 411 of the upper shell 41 and connected by a spring 45. The sliding base 44 closer to the axis of the flip cover 43 is provided with a saw bar 441. The flip cover 43 has a corresponding semi-circular gear 431 extending to the inner side of the upper shell 41 matching with the saw bar 441 of the sliding base 44. A cable 461 goes around a pulley 462 to form the semi-circular gear 441 and connects with the other sliding base 44.
Therefore, when the user presses the button 412 to open the flip cover 43, the sliding base 44 matching with the flip cover 43 is displaced toward the center of the opening 411 by the pulling force of the spring 45. At the same time, the flip cover 43 opens up. In the meantime, the cable 461 is concurrently released so that the other sliding base 44 is also pulled toward the center of the opening 411 by the spring 45. In other words, as the flip cover 43 opens up, the two sliding bases 44 simultaneously enter the region right below the opening 411. In addition to receiving the empty can 50, they also separate the parts inside the case 40 from the exterior. This increase the safety of the invention.
When the flip cover 43 closes, as shown in
Although the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments, will be apparent to persons skilled in the art. It is, therefore, contemplated that the appended claims will cover all modifications that fall within the true scope of the invention.
