# Patent

## Title
Slide mechanism for slide-type portable electronic device

## Abstract

A slide mechanism used in portable electronic device is described including a main plate, a slide plate, a parallelogrammically-shaped slider, and two guiders. The slider is attached to the slide plate. The guiders are attached to the main plate and configured for deformably guiding the slider to move therealong. The slider is positioned between the guiders. During the sliding process of the slide plate with respect to the main plate, two corners of the slider deform the guiders to slide the slide plate along the main plate.

## Background
CROSS-REFERENCE TO RELATED APPLICATION
This application is related to co-pending U.S. patent application Ser. No. 12/475,679, entitled “SLIDE MECHANISM FOR SLIDE-TYPE PORTABLE ELECTRONIC DEVICE”, by Shui-Jin Dong et al., which has the same assignee as the present application. The above-identified application is incorporated herein by reference.
BACKGROUND
1. Technical Field
The present disclosure generally relates to slide mechanisms and, particularly, to a portable electronic device with two or more housings using a sliding mechanism that allows one housing to slide over another housing in a longitudinal direction.
2. Description of Related Art
Slide-type portable electronic devices have been increasingly used among diverse designs for portable electronic devices. The slide-type portable electronic device has two housings, of which one slides over the other to open/close the portable electronic device.
A slide mechanism is generally used in the slide-type portable electronic device for driving the sliding between the two housings. However, the slide mechanism is typically complex in structure and usually difficult to assemble within the portable electronic device. As a result of the structural complexity and assembling difficulty, production costs can be high.
Therefore, there is room for improvement within the art.



BRIEF DESCRIPTION OF THE DRAWINGS
Many aspects of the new slide mechanism for slide-type portable electronic device can be better understood with reference 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 new slide mechanism for slide-type portable electronic device. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
FIG. 1 is an isometric view of a portable electronic device at an opened state using a slide mechanism according to an exemplary embodiment.
FIG. 2 is an exploded and isometric view of the slide mechanism used in the portable electronic device illustrated in FIG. 1.
FIG. 3 is similar to FIG. 2 but showing another aspect of the slide mechanism.
FIG. 4 is an isometric and assembled view of the slide mechanism shown in FIG. 2.
FIG. 5 is a perspective view of the slide mechanism in FIG. 4 in an opened position.
FIG. 6 is similar to FIG. 5, but in a critical position.
FIG. 7 is similar to FIGS. 5 and 6, but in a closed position.



DETAILED DESCRIPTION
FIGS. 1 and 7 show an exemplary slide mechanism 10 used in a slide-type portable electronic device 20 such as a mobile phone, a personal digital assistant, and etc. The portable electronic device 20 includes a first housing 21 and a second housing 22 engaging with the first housing 21. The slide mechanism 10 generates an elastic force sufficient to slide the first and second housings 21 and 22 relative to each other. The first housing 21 may have a keypad 221. The second housing 22 may have a display 221 and several keys 222. The second housing 22 can slide lengthwise over the first housing 21, thus exposing or covering the keypad 211.
Referring to FIGS. 2 and 3, the slide mechanism 10 includes a main plate 11, a slide plate 12, two guiders 13 fixed to the main plate 11, and a slider 14 fixed to the slide plate 12. The slide plate 12 and the main plate 11 are fixed to the second housing 22 and the first housing 21, respectively. The slider 14 can slide along the guiders 13, thereby driving the sliding of the slide plate 12 relative to the main plate 11.
The main plate 11 includes a main base portion 111 and two generally L-shaped rail portions 112. Two opposite edge ends of the base portion 11 extend the two rail portions 112 upwardly. The slide plate 12 is shorter than the main plate 11. The slide plate 12 includes a slide base portion 121 and two slide portions 122. Two opposite borders of the slide base portion 121 directly fix the two slide portions 122 on a same side of the slide base portion 121. The two slide portions 122 are generally U-shaped bars defining two slide grooves 1221 corresponding to the two rail portions 112. The slide base portion 121 has two positioning columns 1211 protruding from a surface thereof. The two slide portions 122 can be attached to the same surface of the slide base portion 121 adjacent to the two positioning columns 1211.
The guiders 13 each have a generally arcuate guide portion 131 and two fixing portions 132. The guide portion 131 is an elastically deformable sheet. Two opposite ends of the guide portion 131 horizontally extend (e.g., co-molding) along the two fixing portions 132. The two fixing portions 132 are configured for fixing (e.g., hot-melting) the guider 13 to the main base portion 111.
The slider 14 is an enclosed torsion spring having two connecting arms 142 connected in a parallelogrammic shape. The connecting portions of the two connecting arms 142 form two positioning coils 141 at the two opposite corners of the parallelogram. The positioning coils 141 are configured to coil around the two positioning columns 1211 to secure the slider 14 to the slide plate 12. The other two opposite corners of the parallelogrammic shape at the connecting arms 142 are resisting portions 143 resist against the guide portion 131 all the way during the sliding process of the sliding mechanism 10. The slider 14 is provided with a certain rigidity to deform the guide portion 131 during the sliding process.
Referring to FIGS. 4 and 5, when the slide mechanism 10 is assembled, the slide plate 12 covers a part of the main plate 11 and can slide along by the sliding of the slide portions 122 along the rail portions 112. The rail portions 112 are received in and can linearly slide within the slide grooves 1221. The guiders 13 and the slider 14 are located between the slide plate 12 and the main plate 11. The two guide portions 131 are symmetrically arranged on a surface of the main base portion 111 with their convex sides extending towards each other. There is a distance between the guide portions 131 and perpendicular to arrow line A. The distance is initially decreased along a direction designated by the arrow line A, minimized at the middle of the guide portions 131, and then increased further along the line A. The two connecting arms 142 are symmetrically arranged on a surface of the slide base portion 121. The slider 14 face the guiders 13 and the resisting portions 143 abut the guide portions 131 without any compression generated between them. The slider 14 is positioned between the guiders 13. At this time, the guide portions 131 and the slide portions 41 are at their original state. The slide mechanism 10 can be at an opened position and the portable electronic device 20 can be at an opened state accordingly.
Referring to FIG. 7, the slide mechanism 10 is at a closed position and the portable electronic device 20 is at a closed state. The slide plate 12 slides along the main plate 11 to reach the closed position to cover another part of the main plate 11. The second housing 22 covers the keypad 211. The resisting portions 143 engage with the guide portions 131 without any compression generated between them.
Referring back to FIG. 5, when the slide mechanism 10 is driven from the opened position to the closed position, the slide plate 12 slides along the main plate 11 by exerting an external force along line A. During this stage, the resisting portions 143 deform the guide portions 131. Referring to FIG. 6, the slide plate 12 reaches a critical position relative to the main plate 11. At this position, the guide portions 131 are compressed by the resisting portions 143 with a maximized deformation. After that, the slide plate 12 can further automatically slide towards the closed position by returning the guide portions 131 from their compressed states to their original states.
It is to be understood, however, that even through numerous characteristics and advantages of the exemplary invention have been set forth in the foregoing description, together with details of the structure and function of the invention, 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.

## Claims

1. A slide mechanism, comprising: a main plate; a slide plate installed on the main plate and slidable relative to the main plate ̃the slide plate comprising two positioning columns; a parallelogrammically-shaped slider comprising two connecting arms continuously connected to each other, the slider having two opposite corners, and a positioning coil is formed at each of the two opposite corners, each positioning column being coiled around by a respective positioning coil to secure the slider to the slide plate; and two guiders attached to the main plate, the slider movably positioned between the guiders, the guiders configured to be deformed as the slider moves between the guiders; wherein during the sliding process of the slide plate with respect to the main plate, two corners of the slider deform the guiders to slide the slide plate along the main plate.

2. The slide mechanism as claimed in claim 1, wherein the slider is provided with a certain rigidity to deform the guiders during the sliding process.

3. The slide mechanism as claimed in claim 2, wherein:
the slider comprises two resisting portions at two opposite corners thereof; and
each guider comprises an elastic guide portion, the guide portions deformably guiding the slider to move therealong, the resisting portions abut and deform the guide portions only to generate the deformation of the guide portions.

4. The slide mechanism as claimed in claim 3, wherein the guide portions are arcuate sheets.

5. The slide mechanism as claimed in claim 3, wherein the two guide portions are symmetrically arranged on the main plate with one extending outward towards the other.

6. The slide mechanism as claimed in claim 1, wherein the main plate comprises two rail portions, and the slide plate forms two slide portions, the slide portions sliding along the rail portions.

7. The slide mechanism as claimed in claim 6, wherein the slide portions define two slide grooves, the rail portions received in the slide grooves and configured for linearly sliding within the slide grooves.

8. A portable electronic device, comprising: a first housing; a second housing slidably installed on the first housing; a slide mechanism, comprising: a main plate; a slide plate installed on the main plate and slidable relative to the main plate a slide plate installed on the main plate and slidable relative to the main plate, the slide plate comprising two positioning columns; a parallelogrammically-shaped slider comprising two connecting arms continuously connected to each other, the slider having two opposite corners, and a positioning coil is formed at each of the two opposite corners, each positioning column being coiled around by a respective positioning coil to secure the slider to the slide plate; and two guiders attached to the main plate, the slider movably positioned between the guiders, the guiders configured to be deformed as the slider moves between the guiders; and configured for deformably guiding the slider to move therealong, the slider positioned between the guiders; wherein during the sliding process of the slide plate with respect to the main plate, two corners of the slider deform the guiders to slide the slide plate along the main plate.

9. The portable electronic device as claimed in claim 8, wherein the slider is provided with a certain rigidity to deform the guiders during the sliding process.

10. The portable electronic device as claimed in claim 9, wherein:
the slider comprises two resisting portions at two opposite corners thereof; and
each guider comprises an elastic guide portion, the guide portions deformably guiding the slider to move therealong, the resisting portions abut and deform the guide portions only to generate the deformation of the guide portions.

11. The portable electronic device as claimed in claim 10, wherein the guide portions are arcuate sheets.

12. The portable electronic device as claimed in claim 10, wherein the two guide portions are symmetrically arranged on the main plate with one extending outward towards the other.

13. The portable electronic device as claimed in claim 8, wherein the main plate comprises two rail portions, and the slide plate forms two slide portions, the slide portions sliding along the rail portions.

14. The portable electronic device as claimed in claim 13, wherein the slide portions define two slide grooves, the rail portions received in the slide grooves and configured for linearly sliding within the slide grooves.