1. Technical Field
The present disclosure relates to a paper delivery device.
2. Description of Related Art
Paper delivery devices are widely used in electronic devices, such as printers, scanners, etc. A typical paper delivery device includes a paper delivery wheel, a first paper guide module, and a second paper guide module. The first paper guide module and the second paper guide module both abut the paper delivery wheel. When the paper delivery wheel delivers a paper, the first paper guide module and the second paper guide module abut on the paper. However, a distance between the first paper guide module and the second paper guide module is not adjustable. The paper delivery device is not suitable to deliver papers of different sizes.
Therefore, there is room for improvement in the art.
Many aspects of the embodiments can be better understood with references to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one.
The driving module 10 comprises a driving motor 11, a driving cap 13, a plurality of first caps 14, and a plurality of second caps 15. A band 16 is attached to and surrounds the driving cap 13, the plurality of first caps 14, and the plurality of second caps 15. A pivot rod 131 is connected to and located between the driving motor 11 and the driving cap 13. The pivot rod 131 is substantially perpendicular to the mounting shaft 20. Each of the plurality of first caps 14 is connected to a first wheel 60 via a first connecting rod 50. Each of the plurality of second caps 15 is connected to a second wheel 80 via a second connecting rod 70. Each of the first wheel 60 and the second wheel 80 includes a circular-arc shaped portion and a protruding portion located at an opposite side relative to the circular-arc shaped portion. The first wheel 60 and the second wheel 80 are parallel to the plurality of first caps 14 and the plurality of second caps 15. The driving cap 13, the plurality of first caps 14, and the plurality of second caps 15 lie on the same row that is substantially parallel to the mounting shaft 20.
The paper guide assembly 30 includes a first guide module and a second guide module. The first guide module includes a plurality of first guide units 31, e.g., three first guide units. The second guide module includes a plurality of second guide units 33, e.g., three second guide units. A spring 311 is attached to each of the plurality of first guide units 31. A second spring 331 is attached to each of the plurality of second guide units 33. In one embodiment, a first end of the spring 311 is fixed to each of the plurality of first guide units 31. A second end of the spring 311 resists against a first metal tab 313. A first end of the second spring 331 is fixed to each of the plurality of second guide units 33. A second end of the second spring 331 resists against a second metal tab 333. The first metal tab 313 extends perpendicularly from a first metal plate 310, fixed in the paper delivery device. The second metal tab 333 extends perpendicularly from a second metal plate 330, fixed in the paper delivery device. Each of the plurality of first guide units 31 has the same structure as each of the plurality of second guide units 33. Each of the plurality of first guide units 31 and the plurality of second guide units 33 includes a paper guide wheel 90 abutting on the paper delivery wheel 40. A notch 100 is defined in each of the plurality of first guide units 31 and the plurality of second guide units 33. A torque spring 200 is mounted in the notch 100 and abuts opposite sides of the notch 100. The torque spring 200 brings pressure to each of the plurality of first guide units 31 and the plurality of second guide units 33. Thus, the paper guide wheel 90 abuts on the paper delivery wheel 40 closely.
The plurality of first guide units 31 and the plurality of second guide units 33 are rotated away from the paper delivery wheel 40, before moving the plurality of first guide units 31 and the plurality of second guide units 33 along the mounting shaft 20. Thus, preventing the first resisting module and the second resisting module from rubbing against the paper delivery wheel 40.
It is to be understood, however, that even though numerous characteristics and advantages have been set forth in the foregoing description of embodiments, 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 disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Number | Date | Country | Kind |
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101122895 | Jun 2012 | TW | national |