# Patent

## Title
Positioning structure for USB connector

## Abstract

An exemplary positioning structure is used for a USB connector assembled with an electronic device including a main body. The positioning structure includes a through hole defined in the main body, and a guiding portion configured on a periphery of an inner sidewall of the through hole.

## Background
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a division application of U.S. patent application Ser. No. 12/141,092, filed on Jun. 18, 2008, now U.S. Pat. No. 7,699,633 and titled, POSITIONING STRUCTURE FOR USB CONNECTOR, which claims the benefit of priority under 35 USC 119 from Chinese Patent Application 200710203479.9, filed on Dec. 27, 2007. The disclosure of the above identified application is incorporated herein by reference.


BACKGROUND
1. Field of the Invention
The present invention generally relates to positioning structures, and particularly to a positioning structure for a USB connector to an electronic device.
2. Discussion of the Related Art
In recent years, there has been an increasing demand for electronic devices, such as personal computers, personal digital assistants (PDAs), mobile phones, MP3 players, and MP4 players. Commonly, the electronic devices use a variety of techniques for providing input and output. A universal serial bus (USB) device may provide for ease of use of peripheral expansion, thus USB connectors are widely used on the electronic devices recently.
For example, in the personal computers, before the USB devices is used, socket/male portions of the USB connectors of the USB devices are commonly assembled in a through hole defined on a housing of the personal computers.
However, a process of engaging the socket/male portions of the USB connectors in the through hole of the electronic devices requires high precision. Thus, this process of connecting a USB connector cannot completed as quick as desired.
What is needed, therefore, is a positioning structure for a USB connector that can overcome the above-mentioned shortcomings.
SUMMARY
A positioning structure is used for a USB connector assembled with an electronic device including a main body. The positioning structure includes a through hole defined in the main body, and a guiding portion configured on a periphery of an inner sidewall of the through hole.
Other novel features will become more apparent from the following detailed description, when taken in conjunction with the accompanying drawings.



BRIEF DESCRIPTION OF THE DRAWINGS
The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present positioning structure for assembling the USB connector. Moreover, in the drawings, like reference numerals designate corresponding parts throughout several views, and all the views are schematic.
FIG. 1 is an isometric view of a positioning structure for a USB connector in accordance with a first exemplary embodiment of the present invention.
FIG. 2 is side, cross-sectional view of the positioning structure for assembling the USB connector of FIG. 1, taken along line II-II thereof.
FIG. 3 is an isometric view of a positioning structure for a USB connector in accordance with a second exemplary embodiment of the present invention.
FIG. 4 is an isometric view of a positioning structure for a USB connector in accordance with a third exemplary embodiment of the present invention.
FIG. 5 is an isometric view of a positioning structure for a USB connector in accordance with a fourth exemplary embodiment of the present invention.



DETAILED DESCRIPTION OF THE EMBODIMENTS
Reference will now be made to the drawings to describe exemplary embodiments of the present positioning structure for the USB connector in detail.
Referring to FIGS. 1 and 2, a positioning structure 10 for a USB connector (not shown) assembled with an electronic device (not labeled) according to a first exemplary embodiment is shown. The positioning structure 10 includes a main body 11 of the electronic device. The main body 11 has an inner surface 12, a through hole 13 defined in the main body 11, and a guiding portion 15 configured on an inner sidewall of the through hole 13. A socket/female portion of the USB connector may be assembled from a side of the inner surface 12.
In this embodiment, a ledge 131 is formed on the inner sidewall of the through hole 13. The guiding portion 15 is positioned on a part of the ledge 131 adjacent to the inner surface 12. The guiding portion 15 consists of two blocks facing each other. Each block includes a restricting surface 151, and a guiding surface 153. The restricting surface 151 is coplanar with the inner sidewall of the first hole 13. The guiding surface 153 is a slanted surface that interconnects the restricting surface 151 and the inner surface 12. A distance between the guiding surfaces 153 of the blocks increases along a direction from the ledge 131 to the inner surface 12. In another words, the distance between the guiding surfaces 153 of the blocks decreases along a direction towards which the socket/female portion of the USB connector is inserted.
In assembling, the socket/female portion of the USB connector is assembled to the through hole 13 from the side of the inner surface 12 guided by the positioning structure 10. Therefore, the socket/female portion of the USB connector may be easily engaged in the through hole 13. In addition, the restricting surface 151 and the ledge 131 may restrict positioning of the socket/female portion of the USB connector and enable a space between the socket/female portion of the USB connector and the sidewall of the through hole 13 uniform, thereby preserving the desired appearance of the computer.
In addition, to improve a performance of connection between the socket/female portion of the USB connector and the sidewall of the through hole 13, edges of the sidewall of the through hole 13 and the guiding portion 15 are rounded. The guiding portion 15 may be made of rubber.
Referring to FIG. 3, a positioning structure 20 for a USB connector according to a second exemplary embodiment is shown. The positioning structure 20 is similar in principle to the positioning structure 10 of the first embodiment. The positioning structure 20 includes a main body 21 of an electronic device. The main body 21 has an inner surface 22, a through hole 23 defined in the main body 21, and a guiding portion 25. However the guiding portion 25 consists of two protrusions extending from an inner surface 22 at a periphery of the through hole 23. Each bottom surface of the guiding portion 25 is coplanar with the inner surface 22. Each guiding surface 253 connects to the restricting surface 251. A distance between the guiding surfaces 253 decreases along a direction from the guiding portions 25 to the through hole 23.
Referring to FIG. 4, a positioning structure 30 for a USB connector according to a third exemplary embodiment is shown. The positioning structure 30 is similar in principle to the positioning structure 10 of the first embodiment. The positioning structure 30 includes a main body 31 of an electronic device. The main body 31 has an inner surface 32, a through hole 33 defined in the inner surface 32. However, the positioning structure 30 further includes two fixing elements 36 on the inner surface 32 adjacent to the through hole 33. Each fixing element 36 includes a fixing board 361, and a fixing hole 363 defined on the fixing board 361. The fixing holes 363 are used for engaging with protrusions on the USB connector, thereby preventing the USB connector from breaking off from the main body 31.
Referring to FIG. 5, a positioning structure 40 for a USB connector according to a fourth exemplary embodiment is shown. The positioning structure 40 is similar in principle to the positioning structure 10 of the first embodiment. The positioning structure 40 includes a main body 41 of an electronic device. The main body 41 has an inner surface 42, a through hole 43 defined in the inner surface 42. However, the positioning structure 40 includes a clamp 47 located on the inner surface 42 beside the through hole 43. The clamp 47 includes two elastic curved boards 471. The elastic curved boards 471 cooperatively define a receiving hole 473 for receiving an electrical wire of the USB connector. In use, the electrical wire of the USB connector may be fixed by the clamp 47, thereby preventing the electrical wire from breaking away from a weld.
It is noted that the scope of the present positioning structure is not limited to the embodiments described above. For example, in the positioning structure 10, a number of the guiding portion 15 may be two, or more. The USB connector may be fixed on the main body 11 by an adhesive. In addition, the socket/female portion of the USB connector may be configured on the outer side of the main body 11, and a plug/male portion of the USB connector may be configured to inserting and pass through the through hole 13 to engage with the socket/female portion from the side of the inner surface 12.
It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the examples hereinbefore described merely being preferred or exemplary embodiments of the invention.

## Claims

1. A positioning structure for a USB connector assembled with an electronic device including a main body, the positioning structure comprising:
a through hole defined in the main body, and a guiding portion configured on a periphery of an inner sidewall of the through hole, wherein the main body comprises a surface, the through hole passing through the surface, the guiding portion extending from the surface of the main body at the periphery of the through hole; and the guiding portion comprises a slanted guiding surface;
the guiding portion comprises two protrusions, a restricting surface of each protrusion being coplanar with an inner sidewall of the through hole.

2. The positioning structure for a USB connector as claimed in claim 1, wherein the guiding portion is made of rubber.

3. The positioning structure for a USB connector as claimed in claim 1, wherein the guiding portion further comprises a restricting surface connected to the slanted guiding surface.

4. The positioning structure for a USB connector as claimed in claim 1, wherein the slanted guiding surface is defined in each protrusion, a distance between the slanted guiding surfaces decreases along a direction from the two protrusions to the through hole.