1. Field of the Invention
The present invention relates to a lifting apparatus for lid, and more particularly to a lifting apparatus for lifting a container lid of the dust collector.
2. Description of the Prior Art
A conventional dust collector, as shown in US Publication No. 20090158549, provides a lifting apparatus to lift a lid of a container of the dust collector. However, the lifting apparatus is fixed on one side of the lid, so that the lid is slanted when being lifted up. Further, the slanted lid is difficult to horizontally and completely cover the container when it is pushed downward, so it even needs to be pressed evenly by hand. That is because the force point of a pushing rod of the lifting apparatus is located out of the lid, so that the lifting force is focused on one side of a pressing bar of the lifting device. In this way, the pressing bar is prone to break. In addition, said lifting apparatus needs to be further disposed with the pressing bar on said dust collector, so it will occupy more space and increase the production cost.
Another dust collector, as shown in U.S. Pat. No. 5,089,037, provided a lifting apparatus which includes a pulley set, a reel unit, and a plurality of slidable holders for evenly lifting up a lid of the dust container. However, said dust collector requires many pulleys and holders on its main body. Moreover, to make the force applied completely and efficiently to lifting the lid, the pulleys of the lifting apparatus need a long distance between each other. Consequently, said dust collector occupies large space and has a heavy weight.
There are other conventional lifting apparatuses like U.S. Pat. No. 3,885,700 which is applied to lifting the lid of a garbage can. However, the lifting apparatus neither can horizontally lift the lid, and the lifting apparatus needs to be fixed on a wall in order to lever the lid.
Therefore, the present invention is arisen to obviate or at least mitigate the above mentioned disadvantages.
The main object of the present invention is to provide a dust collector which has a lifting apparatus for lid, and the lifting apparatus can horizontally lift a lid. In addition, the force point of the lifting apparatus is located on the lid, and the lifting apparatus has a small volume without occupying too much space.
To achieve the above and other objects, a dust collector of the present invention includes a main body, a first dust container, and two lifting apparatus. The main body includes a shell, an expandable pipe, and a lid. The shell comprises a suction apparatus, an inlet pipe, and an outlet pipe. The suction apparatus is adapted to suck outside air through the inlet pipe to inside of the shell, and discharge the air from the outlet pipe. The expandable pipe, which is vertically expandable, is connected between the shell and the lid. The first dust container is detachably disposed on the main body, and adapted to be selectively covered by the lid. The two lifting apparatuses respectively include a base, a linking up mechanism, and an operating rod. The bases are respectively fixed on two sides of an outside wall surface of the shell. The operating rod is movably disposed on the base. One end of the linking up mechanism is disposed on the operating rod, and the other end is fixed on the lid. The operating rod can pivot on an axis with respect to the base between a first position and a second position, and the operating rod brings the mechanism up and down so as to move the lid with respect to the first dust container between an open position and a closed position.
Thereby, the lid can be horizontally lifted up by the two lifting apparatuses. And when the lid is pressed downward, it can evenly and completely cover the opening of the first dust container. Further, force point of the lifting apparatus focuses on the lid, so the linking up mechanism will not break. Moreover, the base of the lifting apparatus is directly disposed on the shell without increasing the volume of the dust collector.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment(s) in accordance with the present invention.
Please refer to
The main body 10 includes a shell 11, an expandable pipe 12, and a lid 13. The shell 11 comprises a suction apparatus 111, an inlet pipe 112, and an outlet pipe. The suction apparatus 111 is adapted to suck outside air through the inlet pipe 112 to inside of the shell, and discharge the air from the outlet pipe. The expandable pipe 12, which is vertically expandable, is connected between the shell 11 and the lid 13.
The first dust container 20 is detachably disposed on the main body 10, and the first dust container is adapted to be selectively covered by the lid 13. Specifically, the lid 13 includes a hole which communicates with the expandable pipe 12. Thereby, when the lid 13 is covered on the first dust container 20 and the suction apparatus 11 is activated, the heavy dust or chips outside will pass through the hole and fall off to the first dust container 20.
Please refer to
Preferably, the seat includes a plate 311 and a pair of wing portions 312. The plate 311 radially extends from two sides of the outside wall surface of the shell, and the two plates 311 are symmetrical. The pair of wing portions 312 is disposed on one side of the plate 311. The operating rod 33 is disposed on the pair of wing portions 312. The linking up mechanism includes two V-shaped members 321, a rod 322, and a seat. One end of the two V-shaped members 321 is respectively disposed on two sides of the operating rod 33, and the other end of the two V-shaped members 321 is respectively disposed on two sides of one end of the rod 322. The other end of the rod 322 is disposed on the seat, and the seat is fixed on the lid 13. In the present embodiment, the base includes a sleeve 313 which is adapted for the rod 322 passing therethrough. The seat includes two end portions 323 and a connecting section 324. The two end portions 323 extend downward from the connecting section 324 to the lid 13, and the two end portions 323 are fixed on the lid 13. Preferably, the rod 322 includes a threaded section 325. The seat comprises a screwed mechanism 326. The threaded section 325 is screwed to the mechanism 326. Thereby, the rod 322 can be adjusted to correspond with the expandable distance of the expandable pipe 12 and the height of the dust collector 20.
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In addition, the bases of the two lifting apparatus are directly fixed on the shell, so there is no need for other components, like a wall or a plate in the prior art, to fix the bases. In this way, the dust collector of the present invention has a small volume and a light weight, and does not require extra cost for installing extra components. Further, the position of the two seats makes the force point of the lifting apparatus focused on the lid, so that the two seats do not break.
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Number | Date | Country | |
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20120272631 A1 | Nov 2012 | US |