# Patent

## Title
Electronic apparatus and connector

## Abstract

According to one embodiment, an electronic apparatus includes a connector into which a plug of a USB cable is insertable. The connector includes a housing and a terminal portion provided in the housing. The housing includes an insertion opening part which exposes the terminal portion outside, a back part positioned at an end part opposite to the insertion opening part in the housing, and a side part provided between the insertion opening part and the back part and configured to oppose to the plug when the plug is inserted into the connector. The side part includes an inclined part which continues to the insertion opening part and is inclined such that a distance between the inclined part and the plug increases in a direction from the back part toward the insertion opening part to form a gap between the inclined part and the plug.

## Background
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2008-139554, filed May 28, 2008, the entire contents of which are incorporated herein by reference.
BACKGROUND
1. Field
One embodiment of the invention relates to a connector to which a USB cable is connectable, and an electronic apparatus comprising the connector.
2. Description of the Related Art
An electronic apparatus such as a portable computer is provided with a Universal Serial Bus (USB) connector to which a USB cable is connectable. Such a USB connector generally comprises a metal housing (i.e., shell) and a terminal portion provided in the housing. At a distal end portion of the USB cable, a plug (i.e., a terminal portion) insertable into the housing of the USB connector is provided.
Jpn. Pat. Appln. KOKAI Publication No. 2005-353517 discloses a memory card socket which prevents inclined insertion of a memory card. The memory card socket comprises entrance guide tapers at an open end of a base shell. The memory card socket further comprises stoppers covering the entrance guide tapers.
In the case where a housing of a connector is formed of metal, even if the user pulls a USB cable connected to the connector in a lateral direction, a plug of the USB cable is damaged, but a terminal portion of the connector often avoids being damaged.
In the case where the housing of the connector is formed of synthetic resin, however, if the user pulls a USB cable connected to the connector in a lateral direction, the housing is deformed and heavy load is applied to a terminal portion of the connector. This may cause damage to the terminal portion of the connector.



BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
A general architecture that implements the various feature of the invention will now be described with reference to the drawings. The drawings and the associated descriptions are provided to illustrate embodiments of the invention and not to limit the scope of the invention.
FIG. 1 is an exemplary perspective view of a portable computer according to an embodiment of the invention;
FIG. 2 is an exemplary perspective view of a portable computer according to the embodiment of the present invention;
FIG. 3 is an exemplary perspective view in enlarged detail of a region surrounded by line F3 of the portable computer shown in FIG. 2;
FIG. 4 is an exemplary front view of a connector according to the embodiment of the present invention;
FIG. 5 is an exemplary front view of a connector according to the embodiment of the present invention;
FIG. 6 is an exemplary front view of a connector according to the embodiment of the present invention;
FIG. 7 is an exemplary cross-sectional view along line F7-F7 of the connector shown in FIG. 4;
FIG. 8 is an exemplary cross-sectional view showing a normal state of the connector shown in FIG. 7, in which a USB cable is connected;
FIG. 9 is an exemplary perspective view of a state in which a lateral force is applied to the USB cable of the connector shown in FIG. 7; and
FIG. 10 is an exemplary perspective view schematically showing a load test of a connector.



DETAILED DESCRIPTION
Various embodiments according to the invention will be described hereinafter with reference to the accompanying drawings. In general, according to one embodiment of the invention, an electronic apparatus comprises a case comprising an opening part, and a connector contained in the case and exposed outside of the case through the opening part and into which a plug of a USB cable is insertable. The connector comprises a housing and a terminal portion provided in the housing. The housing comprises an insertion opening part which exposes the terminal portion outside of the housing, a back part positioned at an end part opposite to the insertion opening part in the housing, and a side part provided between the insertion opening part and the back part and configured to oppose to the plug of the USB cable when the plug is inserted into the connector. The side part comprises an inclined part which continues to the insertion opening part and is inclined such that a distance between the inclined part and the plug increases in a direction from the back part toward the insertion opening part to form a gap between the inclined part and the plug.
In general, according to one embodiment of the invention, a connector into which a plug of a USB cable is insertable, comprises a housing and a terminal portion provided in the housing. The housing comprises an insertion opening part which exposes the terminal part outside of the housing, a back part positioned at an end part opposite to the insertion opening part in the housing, and a side part provided between the insertion opening part and the back part and configured to oppose to the plug of the USB cable when the plug is inserted into the connector. The side part comprises an inclined part which continues to the insertion opening part and is inclined such that a distance between the inclined part and the plug increases in a direction from the back part toward the insertion opening part to form a gap between the inclined part and the plug.
Hereinafter, an embodiment of the present invention will be described with reference to the drawings in which the present invention is applied to a portable computer. FIGS. 1-9 disclose a portable computer 1 as an electronic apparatus according to an embodiment of the present invention. As shown in FIG. 1, a portable computer 1 comprises a main unit 2 and a display unit 3.
As shown in FIG. 1, the main unit 2 comprises a case 4. The case 4 is formed in a flat-box shape and comprises an upper wall 4a, a peripheral wall 4b, and a lower wall 4c. The upper wall 4a supports a keyboard 5. The case 4 contains, for example, a circuit board as a mother board.
The display unit 3 comprises a display housing 6 and a display device 7 contained in the display housing 6. An example of the display device 7 is a liquid crystal display. The display device 7 comprises a display screen 7a. The display screen 7a is exposed to the outside through an opening part 6a provided on a front wall of the display housing 6.
As shown in FIG. 1, a hinge part 8 is provided at the rear edge of the main unit 2. The hinge part 8 swingably couples the display unit 3 to the main unit 2. The display unit 3 is thereby swingable between a first position in which the display unit 3 is bent covering the upper wall 4a and a second position in which the display unit 3 is raised from the upper wall 4a. 
As shown in FIGS. 2 and 3, the main unit 2 comprises a connector 11. The connector 11 is an example of a “connector” as referred to by the present invention. The present invention refers to a socket as a “connector”, which denotes a receptacle for a plug (i.e., a terminal portion) of a cable.
As shown in FIGS. 2 and 3, the connector 11 is mounted on the circuit board, for example, and contained in the case 4. The peripheral wall 4b of the case 4 comprises an opening part 12 which faces the connector 11. The connector 11 is exposed to the outside of the case 4 through the opening part 12. A plug 15 of a USB cable 14 is insertable (i.e., connectable) into the connector 11.
Next, a connector 11 according to the embodiment will be described in detail.
As shown in FIG. 2, the connector 11 according to an embodiment of the present invention is an eSATA/USB combo connector which is selectively connectable to the USB cable 14 or an External Serial ATA (eSATA) cable.
As shown in FIG. 4, the connector 11 according to the present embodiment comprises a housing 21 and a terminal portion 22 provided in the housing 21. The housing 21 is formed of synthetic resin. As shown in FIG. 7, the housing 21 comprises an insertion opening part 23, a back part 24, and first and second side parts 25, 26, forming a pair of side parts, and has an open-ended U-shaped horizontal section.
As shown in FIG. 7, the insertion opening part 23 is provided at one of the end portions (such as a front-end portion) of the housing 21, and is exposed to the outside of the housing 21. The insertion opening part 23 exposes the terminal portion 22 to the outside of the housing 21. In the housing 21, the back part 24 is positioned at the other end portion (such as a back-end portion) opposite to the insertion opening part 23. The back part 24 links back-end portions of the first and second side parts 25, 26, and forms a bottom of the housing 21.
Each of the first and second side parts 25, 26 is provided between the insertion opening part 23 and the back part 24. Further, the first and second side parts 25, 26 separately extend on either side of the terminal portion 22 to interpose the terminal portion 22 therebetween.
The side parts 25, 26 are guide portions which guide the plug 15 of the USB cable 14 or a plug 18 of the eSATA cable 17 from the insertion opening part 23 to the back part 24, and are support members which support the plug 15 or 18 inserted into the connector 11. The plug 15 (i.e., the USB plug 15) of the USB cable 14 comprises a metal shell, for example. The plug 18 (i.e., the eSATA plug 18) of the eSATA cable 17 comprises a shell formed of synthetic resin, for example.
As shown in FIGS. 5, 6 and 8, the first and second side parts 25, 26 are configured to laterally oppose to the plug 15 of the USB cable 14 when the plug 15 is inserted into the connector 11. Further, the first and second side parts 25, 26 are configured to laterally oppose to the plug 18 of the eSATA cable 17 when the plug 18 is inserted into the connector 11.
The width W2 (see FIG. 6) of the plug 18 of the eSATA cable 17 is greater than the width W1 (see FIG. 5) of the plug 15 of the USB cable 14. The connector 11, which is an eSATA/USB combo connector, deals with the difference in width by means of the synthetic-resin housing 21, instead of providing a metal shell suited to the outer size of the USB plug 15. That is, the housing 21 is formed larger than the outer size of the plug 18 of the eSATA cable 17 such that the plug 18 of the eSATA cable 17 is insertable thereinto.
As shown in FIGS. 4 and 7, the terminal portion 22 of the connector 11 comprises a mold portion 27, a plurality of first terminals 28, and a plurality of second terminals 29. The mold portion 27 is formed in a flat shape, for example, and extends from the back part 24 to the vicinity of the insertion opening part 23 in the housing 21. The mold portion 27 is formed of synthetic resin and is integrally formed with the housing 21, for example.
The first terminals 28 are configured to connect to terminals 31 (see FIG. 8) of the plug 15 of the USB cable 14, for example. The number of the first terminals 28 is four, for example. As shown in FIG. 4, the first terminal 28 are provided on one surface (such as an upper surface) of the mold portion 27. The second terminals 29 are configured to connect to terminals (not shown) of the plug 18 of the eSATA cable 17, for example. The number of the second terminals 29 is seven, for example. The second terminals 29 are provided on another surface (such as a lower surface) of the mold portion 27 opposite to the surface on which the first terminals 28 are provided.
As shown in FIGS. 4 and 7, the connector 11 further comprises a shell member 34 formed of metal. The shell member 34 is attached to the housing 21 and covers an upper surface and right and left sides of the housing 21, for example.
Next, an inclined part 37 according to the present embodiment will be described.
As shown in FIG. 7, each of the first and second side parts 25, 26 comprises the inclined part 37. The inclined part 37 is provided in a region close to the insertion opening part 23 in each of the first and second side parts 25, 26, and continues to the insertion opening part 23. As shown in FIG. 8, the inclined part 37 is inclined such that the distance between the inclined part 37 and the plug 15 of the USB cable 14, inserted into the connector 11, increases in the direction from the back part 24 toward the insertion opening part 23 of the housing 21.
That is, the inclined part 37 is inclined such that the distance between the first and second side parts 25, 26 increases in the direction from the back part 24 toward the insertion opening part 23. When the plug 15 of the USB cable 14 is inserted into the connector 11, the inclined part 37 of each of the first and second side parts 25, 26 forms a gap S (i.e., clearance) between the inclined part 37 and the plug 15.
As shown in FIG. 7, the inclined part 37 of each of the first and second side parts 25, 26 is formed longer than half the length of each of the side parts 25, 26 in the direction from the insertion opening part 23 toward the back part 24. That is, the inclined part 37 of each of the first and second side parts 25, 26 extends along a length of more than L/2 from the insertion opening part 23, where L denotes the length (i.e., the distance between the insertion opening part 23 and the back part 24) of each of the side parts 25, 26 in a direction from the insertion opening part 23 toward the back part 24. As an example, the inclined part 37 according to the present embodiment has half the length (i.e., L/2) of the side parts 25, 26.
As shown in FIG. 4, each of the first and second side parts 25, 26 of the housing 21 comprises first and second guide portions 41, 42. As shown in FIGS. 5 and 8, the first guide portions 41 configured to guide the plug 15 of the USB cable 14 from the insertion opening part 23 to the back part 24. The gap between the first guide portion 41 of the first side part 25 and the first guide portion 41 of the second side part 26 is set to suit the width W1 of the plug 15 of the USB cable 14.
As shown in FIG. 6, the second guide portions 42 guide the plug 18 of the eSATA cable 17 from the insertion opening part 23 to the back part 24. The second guide portion 42 is formed to suit the outer size of the plug 18 of the eSATA cable 17.
That is, each of the second guide portions 42 comprises first to third portions 42a, 42b, 42c. The first portion 42a is adjacent to the first guide portion 41 and is configured to guide the first portion 18a of the plug 18 having a width W3. The second portion 42b is configured to guide the second portion 18b of a plug having a maximum width W2. The third portion 42c is configured to guide the third portion 18c of the plug 18 having a width W4.
The gap between the second guide portion 42 of the first side part 25 and the second guide portion 42 of the second side part 26 is set to suit the width of the plug 18 of the eSATA cable 17. That is, the second guide portion 42 is positioned nearer to a rim portion of the housing 21 than the first guide portion 41.
Further, each of the first and second side parts 25, 26 of the housing 21 comprises first and second regions 43, 44. As shown in FIG. 5, the first regions 43 are to be laterally opposed to the plug 15 of the USB cable 14 when the plug 15 of the USB cable 14 is inserted into the connector 11. As shown in FIG. 6, the second regions 44 are to be laterally opposed to the plug 18 of the eSATA cable 17 when the plug 18 of the eSATA cable 17 is inserted into the connector 11.
As shown in FIG. 4, each of the first regions 43 comprises a first guide portion 41 and most of a second guide portion 42. Each of the second region 44 comprises the second guide portion 42. That is, the first and second regions 43, 44 are partially overlapped with each other.
The inclined part 37 of each of the first and second side parts 25, 26 is provided in the first region 43. More specifically, the inclined part 37 of each of the first and second side parts 25, 26 is provided in a part (i.e., the first guide portion 41) of the first region 43 away from the second region 44. That is, the inclined part 37 of each of the first and second side parts 25, 26 is provided in a region to be away from a side of the plug 18 of the eSATA cable 17 when the plug 18 of the eSATA cable 17 is inserted into the connector 11. The inclined part 37 is formed over the overall height of the first guide portion 41.
As shown in FIG. 4, a step portion 45 provided by difference between the width W1 of the plug 15 of the USB cable 14 and the width W3 of the plug 18 of the eSATA cable 17 exists between the first guide portion 41 and the second guide portion 42. The inclined part 37 is provided in the step portion 45. That is, the amount of taper (i.e., the amount of lateral variation from one end to the other end of the inclined part 37) of the inclined part 37 according to the present embodiment is set to be the same as the width of the step portion 45.
Next, the operation of the connector 11 according to the present embodiment will be described.
FIG. 9 shows the action of a lateral force F on the USB cable 14 with the plug 15 of the USB cable 14 inserted into the connector 11. As shown in FIG. 9, the plug 15 of the USB cable 14 to which the lateral force F is applied is inclined from the normal position along the gap S formed by the inclined part 37, and thereby easily withdraws from the connector 11. When the lateral force F applied to the USB cable 14 exceeds a predetermined level, the plug 15 withdraws from the connector 11 spontaneously.
On the other hand, the plug 18 of the eSATA cable 17, having a shell formed of synthetic resin, is more flexible than metal. This causes little damage to the terminal portion 22 of the connector 11 even when the lateral force F is applied to the eSATA cable 17.
With the connector 11 with the above-described configuration, the terminal portion 22 of the connector 11 can be prevented from being damaged. FIG. 10 shows an example of a load test on the connector 11. The load test on the connector 11 is performed by applying the lateral force F to the USB cable 14 with the plug 15 is inserted into the connector 11, and checking the state of the connector 11.
The present inventor conducted the load test on a connector (i.e., a connector in which the side parts 25, 26 are formed straight) not comprising the inclined part 37. The present inventor then confirmed that the plug 15 of the USB cable 14 does not withdraw from the connector 11 even when the lateral force F exceeds 30 N, and that the synthetic-resin housing 21 is deformed rather significantly. The present inventor further confirmed that the terminal portion 22 reaches the critical limit and the mold portion 27 of the terminal portion 22 is damaged when the lateral force F exceeds approximately 40 N.
In the case where the inclined part 37 configured to form the gap S (i.e., clearance or looseness) between the inclined part 37 and the plug 15 is provided as in the present embodiment, the plug 15 of the USB cable 14 to which the lateral force F is applied is inclined from the normal position and becomes easy to withdraw from the connector 11. The plug 15 then withdraws from the connector 11 spontaneously before the lateral force F reaches the level (i.e., threshold) at which the terminal portion 22 is damaged. The terminal portion 22 of the connector 11 is thereby prevented from being damaged even when a user excessively pulls the USB cable 14 inserted into the connector 11 in a lateral direction.
The present inventor conducted the load test on the connector 11 in which the inclined part 37 is provided. As a result, the present inventor has confirmed that the plug 15 withdraws from the connector 11 spontaneously when the lateral force F applied to the USB cable 14 reaches a level (such as 30 N).
In the case where the inclined part 37 is formed with a length of more than half the length of the side parts 25, 26 in a direction from the back part 24 toward the insertion opening part 23, the plug 15 easily withdraws from the connector 11 when the lateral force F is applied to the USB cable 14. This further prevents the terminal portion 22 of the connector 11 from being damaged. In the case where the inclined part 37 is formed in a length of half the length of the side parts 25, 26 in the direction from the insertion opening part 23 toward the back part 24, looseness between the USB plug 15 and the connector 11 can be made reasonably small, thereby preventing damage to the terminal portion 22 and making the connector 11 easy to use.
In the connector 11 to which both the eSATA cable 17 and the USB cable 14 are selectively connectable, the housing 21 must be larger than the outer size of the plug 18 of the eSATA cable 17. This makes it difficult to provide a metal shell suited to the outer size of the plug 15 of the USB cable 14. By providing the inclined part 37 in such an eSATA/USB combo connector, however, the terminal portion 22 of the connector 11 can be prevented from being damaged.
When each of the side parts 25, 26 of the housing 21 comprises a first region 43 to be opposed to the plug 15 of the USB cable 14 and a second region 44 to be opposed to the plug 18 of the eSATA cable 17, and the inclined part 37 is formed in the first region 43, since the inclined part 37 is provided only in a necessary part, the connector 11 can be easily miniaturized as a whole.
In the case where the first and second regions 43, 44 are partially overlapped with each other and the inclined part 37 is provided in a part of the first region 43 which is to be away from the second region 44, the inclined part 37 can be formed by utilizing the step portion 45 generated by the difference between the width W1 of the plug 15 of the USB cable 14 and the width W3 of the plug 18 of the eSATA cable 17. That is, the inclined part 37 is formed by utilizing regions difficult to be effectively used in the eSATA/USB combo connector. This contributes to miniaturization of the connector 11.
In the case where the inclined part 37 is formed in a region to be away from the side of the plug 18 of the eSATA cable 17, the inclined part 37 can be formed by utilizing the step portion 45 generated by difference between the width W1 of the plug 15 of the USB cable 14 and the width W3 of the plug 18 of the eSATA cable 17. Thereby, the connector 11 can be miniaturized.
The present invention is not limited to the above-described portable computer 1 and the connector 1 according to an embodiment of the present invention. The present invention may be practically embodied by modifying the constituent elements without departing from the scope and spirit of the invention.
In the above-described embodiment, an eSATA/USB combo connector is taken as an example, but a connector to which the present invention is applicable is not limited thereto. The present invention may be applied to a connector dedicated to a USB cable comprising a synthetic-resin housing, for example.
While certain embodiments of the inventions have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the inventions. Indeed, the novel methods and systems described herein may be embodied in a variety of other forms; furthermore, various omissions, substitutions and changes in the form of the methods and systems described herein may be made without departing from the spirit of the inventions. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the inventions.

## Claims

1. An electronic apparatus comprising:
a case comprising an opening portion; and,
a connector which is contained in the case, exposed outside of the case through the opening portion, and into which a plug of a Universal Serial Bus (USB) cable is insertable,
wherein the connector comprises:
a plastic housing formed larger than an outer size of a plug of an external Serial Attachment (eSATA) cable; and
a terminal portion provided in the housing,

the eSATA cable and the USB cable being both selectively connectable to the connector,
wherein the housing comprising an insertion opening portion configured to expose the terminal portion outside of the housing, a back portion positioned opposite to the insertion opening portion in the housing, and a side portion provided between the insertion opening portion and the back portion and configured to laterally oppose to the plug of the USB cable when the plug of the USB cable is inserted into the connector,
wherein the side portion comprising a taper portion which continues to the insertion opening portion and is inclined such that a distance between the taper portion and the plug of the USB cable increases in a direction from the back portion toward the insertion opening portion in order to form a gap between the taper portion and the plug of the USB cable, and
wherein the taper portion is formed with a length equal to or larger than half of a length of the side portion in a direction from the insertion opening portion toward the back portion.

2. The electronic apparatus of claim 1, wherein the taper portion is formed in a region away from a side of the plug of the eSATA cable when the plug of the eSATA cable is inserted into the connector.

3. The electronic apparatus of claim 1, wherein the side portion of the housing comprises a first region laterally opposite to the plug of the USB cable when the plug of the USB cable is inserted into the connector, and a second region laterally opposite to the plug of the eSATA cable when the plug of the eSATA cable is inserted into the connector, and
the taper portion is formed in the first region.

4. The electronic apparatus of claim 3, wherein the first region and the second region are partially overlapped with each other, and
the taper portion is formed in a part of the first region, the part being away from the second region.

5. A connector into which a plug of a USB cable is insertable, comprising:
a plastic housing formed larger than an outer size of a plug of an external Serial Attachment (eSATA) cable; and
a terminal portion provided in the housing, the eSATA cable and the USB cable being both selectively connectable to the connector,
wherein the housing comprises an insertion opening portion exposing the terminal portion outside of the housing, a back portion positioned opposite to the insertion opening portion in the housing, and a side portion between the insertion opening portion and the back portion configured to laterally oppose to the plug of the USB cable when the plug of the USB cable is inserted into the connector,
wherein the side portion comprises a taper portion which continues to the insertion opening portion and is inclined such that a distance between the taper portion and the plug of the USB cable increases in a direction from the back portion toward the insertion opening portion in order to form a gap between the taper portion and the plug of the USB cable, and
wherein the taper portion is formed with a length equal to or larger than half of a length of the side portion in a direction from the insertion opening portion toward the back portion.