Patent Application
20090101602
1. Field of the Invention
The present invention generally relates to racks, particularly, to a rack used to hold workpieces during ultrasonic washing.
2. Discussion of the Related Art
Ultrasonic washing is widely used for cleaning workpieces. During washing, the workpieces are fixed on racks and the racks are placed into a washing liquid. The washing liquid is then vibrated ultrasonically by an ultrasonic generator and the workpieces are cleaned by the vibration of the washing liquid.
Referring to
However, some workpieces, such as a housing of a mobile phone, generally, includes a polished portion formed on a side of the housing. When the workpiece is being placed on the rack 500, the polished portion comes into contact with the first arms 521 and the second arm 522. Thus, the polished portion may be scratched, by the first arms 521 and/or the second arm 522, when being mounted, removed, or during washing of the workpiece.
Therefore, an improved rack is desired in order to overcome the above-described shortcomings.
In one embodiment thereof, a rack configured for holding workpieces is provided. The rack includes a base and a plurality of fixtures. The base includes two lateral frames and a fixing frame fitted between the two lateral frames. Each of the lateral frames includes a first stopper and a second stopper mounted thereon. The fixing frame has two fixing poles parallel to the two lateral frames. Each of the two fixing poles has a plurality of latching means mounted in a line thereon. The plurality of fixtures rotatably engage with the latching means of the fixing frame and are fitted between the first stopper and the second stopper.
Other advantages and novel features will become more apparent from the following detailed description of preferred embodiments when taken in conjunction with the accompanying drawings.
Many aspects of the housing for an electronic device can be better understood with reference to the following drawing. The components in the drawing are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the housing for an electronic device. Moreover, in the drawing like reference numerals designate corresponding parts throughout the several views.
Referring to the drawings in detail,
Referring to
The bottom frame 12 includes four basal bars 122 and a plurality of crisscrossed first supporting branches 124. The four basal bars 122 are fitted and joined together to define a plane frame. The plurality of crisscrossed first supporting branches 124 are connected to and defined in the plane frame formed by the four basal bars 122.
Each of the two lateral frames 14 includes two parallel standing poles 141, a crossbeam 142 fixing on the two standing poles 141, a plurality of second supporting branches 143, a first stopper 147, a second stopper 148, and a third stopper 149. Each of the two standing poles 141 is perpendicularly fitted to (e.g., welded to) one of the basal bars 122 of the bottom frame 12. The crossbeam 142 is fitted to the two standing poles 141 at an opposite end to the basal bars 122 of the bottom frame 12. The plurality of second supporting branches 143 is joined with the crossbeam 142 and the basal bars 122 of the bottom frame 12, and are configured for supporting the crossbeam 142.
The first stopper 147 includes a first joining branch 1472 and a protruding post 1474 fixed to the first joining branch 1472. The first joining branch 1472 is fitted to, or welded to one of the standing poles 141. One end of the protruding post 1474 is fixed to (e.g., welded to) the first joining branch 1472, with the other end thereof facing to an opposite one of the two lateral frames 14.
The second stopper 148 includes a second joining branch 1482, a first latching nut 1484, and a bolt 1486. The second joining branch 1482 is fitted to, or welded to one of the standing poles 141, especially welded to an opposite one of the two standing poles 141 to that the first stopper 147 is fixed to. The first latching nut 1484 is fixed to the second joining branch 1482. The bolt 1486 is secured in the first latching nut 1484, with one end thereof extending out and facing to an opposite one of the two lateral frames 14.
The third stopper 149 may be a post, with one end thereof being fitted to one of the standing poles 141 and the other end thereof facing to an opposite one of the two lateral frames 14.
The fixing frame 16 includes two parallel bearing poles 162 and two parallel fixing poles 164 respectively joined together with the two parallel bearing poles 162. The two parallel bearing poles 162 are fitted between the two the two lateral frames 14. Each of the two parallel bearing poles 162 has two ends respectively welded to the standing poles 141 of the two lateral frames 14. Each of the two parallel fixing poles 164 has a plurality of second latching nuts 166 welded thereon in line. The parallel fixing poles 164 are welded between the two parallel bearing poles 162, especially arranged in parallel with the bottom frame 12 and the lateral frames 14.
Referring to
The latching pins 24 are respectively welded to the free end 2222 of the supporting poles 223. Each of the hanging hooks 25 has two hooked ends 251 welded to the first holding beam 221. The hanging hooks 25 are configured (i.e., structured or arranged) for holding workpieces. The hanging posts 26 are fitted on the second holding beam 222. Each of the hanging posts 26 is configured for holding workpieces, associating with a corresponding one of the hanging hooks 25. Each of the two spacing bars 27 has two bent ends 271 respectively welded to the two supporting poles 223. The two spacing posts 28 are respectively fitted on the two supporting poles 223 at an opposite side to the two spacing bars 27.
In assembly, the fixtures 20 are rotatably mounted on the fixing frame 16 in a predetermined order, with the latching pins 24 of the fixtures 20 being respectively rotatably inserted into the second latching nuts 166 of the fixing frame 16. The supporting poles 223 of one of the fixture 20 resist the first stoppers 147 of the lateral frames 14. The spacing bars 27 of the fixtures 20 resist the supporting poles 223 of one of the neighboring of the fixtures 20. The spacing posts 28 of the fixtures 20 resist the supporting poles 223 of one of the neighboring of the fixtures 20, except the spacing posts 28 of one of the fixtures 20 resisting the first stoppers 147 of the lateral frames 14. Then, the bolt 1486 is secured into the first latching nut 1484, with one end 1487 thereof extending out and facing to an opposite one of the two lateral frames 14. The supporting poles 223 of one of the fixtures 20 adjacent to the second stopper 148 resist the end 1487 of the bolt 1486 of the second stopper 148. As such, the fixtures 20 are mounted on the base 10 to form the rack 100.
Also referring to
Both two opposite sides of each of the workpieces 30 do not come into contact with the fixtures 20 when the workpieces 30 being fitted onto the fixtures 20. In this way, both the two opposite sides of the workpieces 30 can be prevented from being scratched by the fixtures 20 and thus the quality of the workpieces 30 is maintained.
It should be understood, however, that even though numerous characteristics and advantages of the present embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
| Number | Date | Country | Kind |
|---|---|---|---|
| 200710202152.X | Oct 2007 | CN | national |
