KR20150110692A - Electrical contacts and connectors - Google Patents

Abstract

Electrical contact and connector technology will be described. In one or more embodiments, a computing system includes a protrusion configured to be disposed within a channel, a communication contact configured to contact a contact in the channel to support a communicative connection, and a communication contact disposed on the protuberance, And a computing device and an input device that are configured to be physically and communicatively coupled using a protrusion configured to be received within a cavity formed as a part. The protrusion includes an electrical contact configured to be self-cleaning by movement of the protrusion relative to the cavity and configured to transfer power between the input device and the computing device.

Description

[0001] ELECTRICAL CONTACTS AND CONNECTORS [0002]

Background of the Invention Mobile computing devices are being developed to increase the functionality that users can use in mobile settings. For example, a user may interact with a mobile phone, tablet computer, or other mobile computing device to check email, surf the web, write text, interact with the application, and so on. Because the mobile computing device is configured as a mobile, it may be difficult to interact with a user in any situation, such as supporting a user focused on data entry.

Thus, input devices are being developed to extend the functionality of computing devices, e.g., using auxiliary keyboards, track pads, and the like. However, conventional techniques for detaching an input device for a computing device are intertwined in that it is difficult to isolate, but provides good protection, or relatively easy to isolate, but provides limited protection.

In addition, since the functions available through these devices continue to expand, a significant amount of power and / or data may be involved in transferring between devices. However, since conventional connections typically have a limited amount of power that can be transferred between devices, the functionality supported by these devices is limited.

Electrical contact and connector technology will be described. In at least one embodiment, the input device includes an input configured to generate a signal to be processed by the computing device, and a connection attached to the input. The connection is configured to be physically connected to the computing device and communicatively coupled to the computing device for communicating the generated signal.

The connection includes a projection configured to be disposed in a channel formed in the housing of the computing device and a protrusion disposed on the projection. The protrusion is configured to be received in a cavity formed as part of the channel. The protrusion includes an electrical contact configured to be self-cleaning by movement of the protrusion relative to the cavity and configured to transfer power between the input device and the computing device.

In one or more embodiments, a computing system includes a protrusion configured to be disposed within a channel, a communication contact configured to contact a contact in the channel to support a communicative connection, and a communication contact disposed on the protuberance, And a computing device and an input device that are configured to be physically and communicatively coupled using a protrusion configured to be received within a cavity formed as a part. The protrusion includes an electrical contact configured to initiate a wiping motion when the protrusion moves within the cavity and to transmit power between the input device and the computing device.

In one or more embodiments, a computing system includes a communication contact disposed on the protrusion configured to provide a communicative connection between a protrusion configured to be disposed within a channel and a contact within a channel, And an input device configured to physically and communicatively connect using an electrostatic discharge device configured to protect the communication contact from electrostatic discharge by providing a path from the protrusion to ground the electrostatic discharge.

This summary is provided to introduce in a simplified form certain aspects of the concepts described below and in the following detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter and should not be used as an aid in determining the scope of the claimed subject matter.

Will be described in detail with reference to the accompanying drawings. In the drawings, the leftmost digits of reference numerals indicate the drawings in which the reference numerals first appear. By using the same reference numerals in different examples in the text and in the drawings, it is possible to indicate similar or identical items. As the entities depicted in the figures may represent more than one entity, they may be referred to interchangeably for the singular or plural forms of the entities in the text.
1 is a diagram illustrating an environment within an implementation that is operable to employ the techniques described herein.
2 is a diagram illustrating an embodiment of the input device of FIG. 1, showing the flexible hinge in more detail.
Figure 3 is an illustration of an example of an orientation of an input device relative to a computing device when covering the display device of the computing device.
4 is a diagram showing an example of the orientation of an input device for a computing device when assuming a typing orientation.
5 is an illustration of an example of an orientation of an input device relative to a computing device when covering the back housing of the computing device and exposing the display device of the computing device.
6 is a diagram illustrating an example of an orientation of an input device that is configured to cover the back side of a computing device, in this case including a portion that is used to support a kick stand of a computing device.
Fig. 7 is a diagram showing an example of alignment when an input device including the portion of Fig. 6 is used to cover both the front and back sides of a computing device; Fig.
Fig. 8 is a view showing an embodiment showing a perspective view of the connection of Fig. 2 including a mechanical coupling protrusion and a plurality of communication contacts. Fig.
Figure 9 is a more detailed view of a cross-section taken along an axis showing communication contacts and a cross-sectional view of a cavity of a computing device.
10 is a cross-sectional view of the input device, the flexible hinge, and the computing device when the input device is oriented as shown in FIG. 3, in the case where it serves as a cover for a display device of a computing device.
11 is a more detailed view of a cross-section taken along an axis showing a magnetic coupling device and a cross-sectional view of a cavity of a computing device.
Figure 12 is an illustration of an example of a magnetic coupling that may be employed by an input device or a computing device to implement a flux fountain.
13 is a diagram illustrating another example of a magnetic coupling portion that may be employed by an input device or a computing device to implement a flux fountain.
Figure 14 is a more detailed view of a cross-section taken along an axis showing the mechanical engaging projection and a cross-sectional view of a cavity of a computing device.
15 is a perspective view of a protrusion when configured for signal transmission and / or power transmission between an input device and a computing device;
Figure 16 is a plan view of a protrusion with a surface divided to support a plurality of different contacts.
17 is a cross-sectional view of the protrusion of Fig. 16 when disposed within a cavity of a computing device.
18 is a view showing an embodiment showing an exploded view of a self-made electrical contact formed as a part of a mechanical coupling protrusion.
19 is a view showing an embodiment in which the magnetic coupling protrusions of Fig. 18 are shown on a quadrilateral cut road.
20 is a view showing an embodiment showing a top view of one of the mechanical coupling protrusions and an electrical contact formed thereon.
21 is a diagram illustrating an embodiment seen through a cross section of a mechanical interlock feature supported by a mechanical engaging projection including an electrical connection between an input device and a computing device.
22 is a diagram showing an embodiment showing an isometric cut-away view illustrating the mid-air function of an electrical contact due to movement with respect to each other.
23 is a diagram illustrating an implementation in which an input device and a computing device are configured to support non-arcing access.
24 is an exploded isometric view showing a technique for manufacturing an assembly.
25 is a diagram illustrating an embodiment that illustrates the electrical contact of FIG. 24 in greater detail.
26 is a view showing an embodiment in which the electrical contact is formed to have a round shape.
27 and 28 are diagrams illustrating an implementation of an alternative design combination in which mobility electrical contacts are included on a computing device and non-active electrical contacts are included on the input device.
29 and 30 are diagrams illustrating an embodiment of an electrostatic discharge device configured to protect a communication contact of a computing device.
Figs. 31 and 32 are diagrams showing an exploded view of the components of the electrostatic discharge device.
33 is a diagram illustrating an embodiment in which a connector utilized to support a communications contact of a computing device serves as a structural support.
Figure 34 illustrates an example system that includes various components of an exemplary device that may be implemented as any type of computing device described with reference to Figures 1-33 for implementing embodiments of the techniques described herein FIG.

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A variety of different devices may be physically attached to a mobile computing device to provide various functions. For example, the device can be configured to protect against damage by installing a cover for at least a display device of the computing device. Other devices, such as an input device that provides input to the computing device (e.g., a keyboard with a trackpad), may also be physically attached to the mobile computing device. In addition, these devices may involve power transfer with the computing device. However, conventional techniques that have been used to support power transmission have an impact on the overall form factor of the device and / or computing device because of the limited amount of power supported and difficult handling.

Electrical contact and connector technology will be described. In at least one embodiment, an electrical contact configured to transmit power and / or data between the input device and the computing device is configured to support a midnight function. This can be achieved through wiping movement that can eliminate at least some of the oxide layer on the input device and / or the electrical contact of the computing device.

This wiping movement may be performed as part of the removal of the input device relative to the computing device. In this way, as described with respect to FIG. 23, a large amount of power and / or data transfer between the computing device and the input device can be supported by physically reducing the resistance at the contact interface. This may be achieved, for example, in the case where the input device comprises an auxiliary power supply for the computing device, to the input device in order to support a significant amount of power consuming function (e.g. charging the input device, supporting haptic feedback, May be used to support various functions, such as transmitting power and supporting transmission of power and / or data from an input device to a computing device. Further description of the construction of such electrical contacts can be found for the first time in connection with FIG.

Various other functions may also be considered, such as supporting an electrostatic discharge device configured to protect components of a computing device and / or input device from electrostatic discharge, and a further description thereof may be found in connection with Figures 29-32 have. As another example, a support used to guide a communication contact as part of a computing device may also be used as a support for a display device, and further explanation thereof can be found in connection with FIG.

In the following, an exemplary environment in which the techniques described herein may be employed is first described. An illustrative procedure that can then be performed in an environment other than that exemplary environment is described. Thus, the performance of the exemplary procedures is not limited to the exemplary environment, and the exemplary environment is not limited to the performance of the exemplary procedures. It is also possible to consider other devices, such as covers, which describe the input device but do not include the input function. For example, these techniques may also be applied to a passive device configured and disposed within a cover to be attracted to a magnetic coupling device of a computing device, such as the use of a cover having one or more materials (e.g., magnet, steel, etc.) The same can be applied, which will be described later.

An exemplary environment

Figure 1 is a diagram illustrating an environment 100 within an implementation operable to employ the techniques described herein. The illustrated environment 100 includes an example of a computing device 102 that is physically and communicatively coupled to the input device 104 via a flexible hinge 106. The computing device 102 may be configured in a variety of ways. For example, the computing device 102 may be configured for mobile, such as a mobile phone, a tablet computer as shown. Thus, the computing device 102 may vary in memory and processor resources from substantial full resources to memory and / or low resource devices with limited processing resources. The computing device 102 may also be associated with software that causes the computing device 102 to perform one or more operations.

The computing device 102 is shown, for example, to include an input / output module 108. The input / output module 108 represents the functions related to input processing and output rendering of the computing device 102. A key of the input device 104, for example, to identify a gesture and to perform a touch screen function of the display device 110 and / or an action corresponding to the gesture that may be recognized through the input device 104, Various different inputs may be processed by the input / output module 108, such as an input relating to a function corresponding to a key of a virtual keyboard displayed by the display device 110. Accordingly, the input / output module 108 can support various different input techniques by recognizing and utilizing the distinction between input types including key presses, gestures, and the like.

In the illustrated example, the input device 104 is configured as having an input including a keyboard having a QWERTY key arrangement and a trackpad, but other key arrangements may be considered. In addition, other unconventional configurations, such as a game controller, a configuration to mimic a musical instrument, and the like, may be considered. Thus, the input device 104 and the keys embedded in the input device 104 may represent a variety of different configurations to support a variety of different functions.

As discussed above, the input device 104 is physically and communicatively coupled to the computing device 102 in this example using the flexible hinge 106. Flexible (e.g., bendable) flexure of the material forming the hinges, as opposed to mechanical rotation, which is supported by a pin - of course this embodiment may also be considered - So that the rotational movement supported by the hinge is achieved. This flexible rotation also supports movement in one or more directions (e.g., vertical in the figure) but is configured to inhibit movement in other directions, such as lateral movement of the input device 104 relative to the computing device 102 . This can be used to support consistent alignment of the input device 104 to the computing device 102, for example, to align sensors used to alter power conditions, application state, and the like.

For example, the flexible hinge 106 may be formed using one or more fabric layers and may be formed of a conductive material, such as a conductor, formed as a flexible trace to communicateably connect the input device 104 to the computing device 102 and vice versa. . ≪ / RTI > This communication may be used, for example, to convey the result of a keypress to the computing device 102, receive power from the computing device, perform authentication, provide auxiliary power to the computing device 102, and the like. The flexible hinge 106 can be configured in a variety of ways, and further description thereof can be found in connection with subsequent drawings.

2 is a diagram illustrating an embodiment 200 of the input device 104 of FIG. 1, showing the flexible hinge 106 in greater detail. In this example, a connection 202 of an input device configured to provide a communication or physical connection between the input device 104 and the computing device 102 is shown. The depicted connection 202 has a cross section and a height configured to be received within a channel within the housing of the computing device 102, but this configuration may be reversed without departing from the spirit and scope of the present invention.

The connection 202 is flexibly connected to an input device 104 that includes a key using a flexible hinge 106. Thus, when the connection 202 is physically connected to a computing device, the combination of the connection 202 and the flexible hinge 106 can be used to move the input device 104 relative to the computing device 102, .

Through this rotational movement, various different orientations of the input device 104 to the computing device 102 may be supported. For example, the rotational movement may be supported by the flexible hinge 106 such that the input device 104 may be positioned relative to the display device 110 of the computing device 102, It can serve as a cover as shown. Thus, the input device 104 may serve to protect the display device 110 of the computing device 102 from damage.

As shown in the orientation example 400 of FIG. 4, a typing configuration may be supported. In this orientation, the input device 104 is laid flat against the surface, and the computing device 102 may be configured to display on the display device 110 (e. G., Using a kick stand 402 disposed on the back of the computing device 102) At an angle so as to be seen.

In the example orientation 500 of FIG. 5, the input device 104 is coupled to the back side of the computing device 102, for example, to a computing device 102 that is disposed on the opposite side of the display device 110 on the computing device 102, With respect to the rear housing of Fig. In this example, through the orientation of the connection 202 to the computing device 102, the flexible hinge 106 connects the connection 202 to position the input device 104 at the back of the computing device 102 "Wrap around."

By this wrapping, a portion of the back surface of the computing device 102 is exposed. This means that even though a significant portion of the back surface of the computing device 102 in this alignment example 500 is covered by the input device 104, a camera 502 disposed on the back surface of the computing device 102 may be used And the like. Although described above with respect to the configuration of the input device 104 that always covers one side of the computing device 102, other configurations are also contemplated.

In the orientation example 600 of FIG. 6, the input device 104 is shown as including a portion 602 configured to cover the back surface of the computing device. This portion 602 is also connected to the connection portion 202 using the flexible hinge 604.

6 also shows a typing configuration in which the computing device 104 is positioned at an angle such that the input device 104 is laid flat against the surface and the display device 110 is visible. This is supported using a kick stand 402 disposed on the back side of the computing device 102 to contact the portion 602 in this example.

7 illustrates an example in which an input device 104 including a portion 602 covers both surfaces of the computing device 102 (e.g., the display device 110) and the back surface (e.g., opposite the display device of the housing) The orientation example 700 is used. In one or more embodiments, electrical and other connectors may also be disposed along the sides of computing device 102 and / or input device 104, for example, to provide auxiliary power at the time of closure.

Of course, various other orientation examples may be supported. For example, the computing device 102 and the input device 104 may represent a configuration in which both devices lie flat against the surface, as shown in Fig. Other examples, such as a tripod configuration, a conference configuration, a presentation configuration, and the like, may also be considered.

Referring again to Figure 2, the connection 202 is shown as including magnetic coupling devices 204 and 206, mechanical coupling protrusions 208 and 210, and a plurality of communication contacts 212 in this example. The magnetic coupling devices 204 and 206 are configured to magnetically couple to the complementary magnetic coupling device of the computing device 102 using one or more magnets. In this way, the input device 104 can be physically fixed to the computing device 102 using magnetic force.

The connection 202 also includes a mechanical coupling protrusion 208, 210 for forming a mechanical physical connection between the input device 104 and the computing device 102. The mechanical coupling protrusions 208 and 210 are shown in more detail in Fig. 8, which will be described later. Further, the protrusions 208 and 210 may be configured to support communication and / or power transmission of data, and a further description thereof may be found first in connection with FIG.

8 is a diagram showing an embodiment 800 showing a perspective view of the connection 202 of FIG. 2 including the mechanical coupling protrusions 208, 210 and a plurality of communication contacts 212. FIG. As shown, the mechanical coupling protrusions 208, 210 are configured to extend perpendicularly in this case away from the surface of the connection 202, but other angles can be considered.

The mechanical engaging protrusions 208, 210 may be configured to be received within a complementary cavity within the channel of the computing device 102. When so accommodated, the mechanical coupling protrusions 208 and 210 provide mechanical coupling between the devices when a non-aligned force is applied to the axis defined as corresponding to the height of the protrusion and the depth of the cavity, Further explanation can be found with reference to FIG.

The connection portion 202 is also shown as including a plurality of communication contacts 212. The plurality of communication contacts 212 are configured to contact a corresponding communication contact of the computing device 102 to form a communicative connection between the devices, as shown and described in greater detail with respect to subsequent figures .

9 is a diagram illustrating in greater detail a cross-sectional view of a cavity of the computing device 102 and a cross-sectional view 900 taken along the axis of FIGS. 2 and 8 showing one of the communication contacts 212. FIG. The connection 202 includes a protrusion 902 configured to complement the channel 904 of the computing device 102 so that the movement of the protrusion 902 within the cavity 904 is restricted, .

The communication contact 212 may be configured in a variety of ways. In the illustrated example, the communication contact 212 of the connection 202 is formed as a spring mounting pin 906 that is caught within the cylinder 908 of the connection 202. The spring mounting pin 906 is biased outwardly from the cylinder 908, for example, to the contact 910 of the computing device 102, to provide a continuous communication contact between the input device 104 and the computing device 102 . Thus, the contact and the communication therewith can be maintained during the movement or jostling of the devices. Various other examples are also contemplated, including placement of pins on the computing device 102 and contacts on the input device 104.

The flexible hinge 106 is shown in greater detail in the example of FIG. The flexible hinge 106 in this section is a conductor (not shown) configured to communicatively connect the communication contact 212 of the connection 202 with the input 914 of the input device 104, e.g., 912). The conductors 912 may be variously shaped, such as copper traces having an operational flexibility to permit operation as part of the flexible hinge, for example, to support repeated bending of the hinge 106. [ However, the flexibility of the conductor 912 can be limited, for example, it can be maintained in an operative state to conduct the signal for deflection that is made greater than the minimum bending radius.

The flexible hinge 106 can be configured to support a minimum bending radius based on the operational flexibility of the conductor 912 so that the flexible hinge 106 will resist bending down to a minimum radius. Various other techniques may be employed. For example, the flexible hinge 106 may be configured to include first and second outer layers 916, 918, which may be fabric, microfiber cloth, or the like. The flexibility of the material used to form the first and / or second outer layers 916 and 918 is such that the conductor 912 does not break or otherwise become inoperable during movement of the input device 914 relative to the connection 902 , It can be configured to support the flexibility as described above.

In another example, the flexible hinge 106 may include an intermediate mid-spine 920 disposed between the connection 202 and the input 914. The intermediate spine 920 includes a first flexible portion 922 that flexibly connects the input 904 to the intermediate spine 920 and a second flexible portion 932 that flexibly connects the intermediate spine 920 to the connection 902, And a second flexible portion 924.

The first and second outer layers 916 and 918 extend from the input 914 through the first and second portions 922 and 924 of the flexible hinge 106 For example, clamping, adhesive, or the like. A conductor 912 is disposed between the first and second outer layers 916 and 918. The intermediate spine 920 may be configured to provide mechanical stiffness at a particular location on the flexible hinge 106 to support the desired minimum bending radius, and further discussion thereof can be found in connection with the subsequent figures.

Figure 10 shows an example in which the input device 104 serves as a cover for the display device 110 of the computing device 102 and when it is oriented as shown in Figure 3 the connection 902 of the input device 104, A sex hinge 106, and a computing device 102. As shown in FIG. As shown, the flexible hinge 106 is bent in this orientation. However, through the sizing of the first and second flexible portions 922 and 924 including the intermediate spiral portion 920, the bending does not exceed the operating bending radius of the conductor 912 as described above. In this way, the mechanical stiffness provided by the intermediate spine 920 (which is greater than the mechanical stiffness of the other portion of the flexible hinge 106) can protect the conductor 912.

The intermediate spine 920 may also be used to support a variety of other functions. For example, the intermediate spine 920 may limit movement along the longitudinal axis, which may otherwise be encountered due to the flexibility of the flexible hinge 106, while supporting movement along the longitudinal axis, Can help.

Other techniques may also be used to provide the desired flexibility at a particular point along the flexible hinge 106. For example, using embossing, an area that imitates the size and orientation of the embossed area, e.g., the intermediate spine 920, can be embossed in at least one of the first and second outer layers 916, 918 , And may be configured to increase the flexibility of the material. An example of an embossing line 214 that enhances the flexibility of the material along a particular axis is shown in FIG. However, it is evident that various shapes, depths, and orientations of the embossed area may also be considered to provide the desired flexibility of the flexible hinge 106.

11 is a more detailed view of a section view 1100 taken along an axis showing the magnetic coupling device 204 and a cross-sectional view of the cavity 904 of the computing device 102. FIG. In this example, the magnet of the magnetic coupling device 204 is shown as being disposed in the connection portion 202.

The connecting portion 202 and the channel 904 move together so that the magnet 1102 is attracted to the magnet 1104 of the magnetic coupling device 1106 of the computing device 102 so that the computing device 102 housing Lt; RTI ID = 0.0 > 904 < / RTI > In one or more embodiments, the flexibility of the flexible hinge 106 may cause the connection 202 to "snap into " the channel 904. This also causes the connection 202 to "line up" with the channel 904 such that the mechanical coupling protrusions 208 are aligned to be inserted into the cavity 1002, Lt; RTI ID = 0.0 > 910 < / RTI >

The magnetic coupling devices 204 and 1106 may be configured in various ways. For example, the magnetic coupling device 204 may employ a backing 1108 (e.g., steel, etc.) to allow the magnetic field generated by the magnet 1102 to extend outwardly from the backplate 1108 have. Therefore, the range of the magnetic field generated by the magnet 1102 can be widened. Various other configurations may also be employed by the magnetic coupling device 204, 1106, examples of which are shown and described with respect to subsequent reference figures.

12 is an illustration of an example of a magnetic coupling portion 1200 that may be employed by input device 104 or computing device 102 to implement a flux fountain. In this example, alignment of magnetic fields is displayed for each of a plurality of magnets using arrows.

The first magnet 1202 is disposed in a magnetic coupling device having a magnetic field aligned along the axis. The second and third magnets 1204 and 1206 are disposed on both sides of the first magnet 1202. The alignment of the respective magnetic fields of the second and third magnets 1204 and 1206 is substantially perpendicular to the axis of the first magnet 1202 and is generally opposite to each other.

In this case, the magnetic fields of the second and third magnets are directed toward the first magnet 1202. Thus, as the magnetic field of the first magnet 1202 is further expanded along the indicated axis, the range of the magnetic field of the first magnet 1202 increases.

The influence can be further extended by using the fourth and fifth magnets 1208 and 1210. [ In this example, the fourth and fifth magnets 1208 and 1210 have a magnetic field that is aligned substantially opposite to the magnetic field of the first magnet 1202. Further, the second magnet 1204 is disposed between the fourth magnet 1208 and the first magnet 1202. The third magnet 1206 is disposed between the first magnet 1202 and the fifth magnet 1210. Accordingly, the magnetic fields of the fourth and fifth magnets 1208 and 1210 are further expanded along their respective axes, so that these magnets as well as the strength of the other magnets in the assembly can be further increased. The arrangement of these five magnets may be suitable for forming a magnetic flux. Although five magnets have been described, another odd number of magnets greater than 5 can repeat this relationship to form a much greater intensity flux.

To magnetically attach to other magnetic coupling devices, a similar magnet array can be placed "on top" or "below" the exemplary arrangement, for example, first, fourth, fifth The magnetic fields of the magnets 1202, 1208, and 1210 can be aligned with the corresponding magnets above or below the magnets. Also, in the illustrated example, the strength of the first, fourth, and fifth magnets 1202, 1208, and 1210 is stronger than that of the second and third magnets 1204 and 1206, but other embodiments may be considered. Other examples of the self-flux will be described with reference to the following figures.

13 is a diagram illustrating an example of a magnetic coupling portion 1300 that may be employed by input device 104 or computing device 102 to implement a flux fountain. In this example as well, alignment of magnetic fields is displayed for each of a plurality of magnets using arrows.

As in the example 1200 of FIG. 12, the first magnet 1302 is disposed in a magnetic coupling device having a magnetic field aligned along the axis. The second and third magnets 1304 and 1306 are disposed on both sides of the first magnet 1302. The alignment of the magnetic fields of the second and third magnets 1304 and 1306 is substantially perpendicular to the axis of the first magnet 1302 and is generally opposite to each other as in the example 1200 of Fig.

In this case, the magnetic fields of the second and third magnets are directed toward the first magnet 1302. Thus, as the magnetic field of the first magnet 1302 is further expanded along the indicated axis, the range of the magnetic field of the first magnet 1302 increases.

The influence can be further extended by using the fourth and fifth magnets 1308 and 1310. [ In this example, the fourth magnet 1308 has a magnetic field that is aligned substantially opposite to the magnetic field of the first magnet 1302. The fifth magnet 1310 has a magnetic field that is aligned substantially corresponding to the magnetism of the second magnet 1304 and is substantially opposite to the magnetic field of the third magnet 1306. The fourth magnet 1308 is disposed between the first magnet and the fifth magnet 1306, 1310 in the magnetic coupling device.

The arrangement of these five magnets may be suitable for forming a magnetic flux. Although five magnets are described, another odd number of magnets greater than 5 can repeat this relationship to form a much greater intensity of magnetism. Accordingly, the magnetic fields of the first magnet 1302 and the fourth magnet 1308 are further expanded along their respective axes, so that the strength of the magnets can be further increased.

A similar magnet array may be placed "on top" or "below" the exemplary arrangement for magnetically attaching to other magnetic coupling devices, for example, first and fourth magnets 1302 , 1308 can be aligned with the corresponding magnets above or below the magnets. Further, in the illustrated example, the (individual) intensities of the first and fourth magnets 1308 and 1307 are stronger than those of the second, third and fourth magnets 1304, 1306 and 1310, but other embodiments may be considered .

Also, the example 1200 of FIG. 12, which uses magnets of similar size, may have an increased magnetic coupling in contrast to the example 1300 of FIG. For example, example 1200 of FIG. 12 uses three magnets (e.g., first, fourth and fifth magnets 1202, 1208, 1210) to provide primarily magnetic coupling, and two Magnets, such as second and third magnets 1204 and 1206, are used to "steer " the magnetic field of the magnet. However, example 1300 of FIG. 13 uses two magnets (e.g., first and fourth magnets 1302 and 1308) primarily to provide magnetic coupling, and three magnets, 3, and fifth magnets 1304, 1306, 1310 are used to "tune" the magnetic field of the magnet.

Thus, the example 1300 of FIG. 13, which uses magnets of similar size, may have magnetic alignment properties that are elevated in contrast to the example 1200 of FIG. For example, the example 1300 of FIG. 13 may include three magnets (e. G., A second magnet) to "tune" the magnetic fields of the first and fourth magnets 1302 and 1308, Third, and fifth magnets 1304, 1306 and 1310. The magnetic field alignment of the magnets in example 1300 of FIG. 13 is therefore more closely aligned with the magnetization of the example 1200 of FIG. )can do.

Regardless of the technique employed, the "steering" or "aiming" of the magnetic field being described is to determine the effective distance of the magnets, for example in comparison with using magnets of similar intensity in the normal alignment state . ≪ / RTI > In one or more embodiments, this may result in an increase from a few millimeters using a constant amount of magnetic material to a few centimeters using the same amount of magnetic material.

14 is a more detailed view of a cross-sectional view of the cavity 904 of the computing device 102 and a cross-sectional view 1400 taken along the axes of FIGS. 2 and 8 showing the mechanical coupling protrusion 208. FIG. As before, the protrusions 902 and channels 904 can be configured to have complementary sizes and shapes to limit movement of the connection 202 to the computing device 102.

A mechanical engaging projection 208 configured to be received in a complementary cavity 1402 disposed in the channel 904 is also disposed and included on the projection 902 of the connection portion 202. [ For example, the cavity 1402 may be configured to receive the protrusion 1002 when configured as a substantially elliptical post, as shown in Fig. 8, although other examples are contemplated.

When a force is applied that coincides with the height of the mechanical engaging projection 208 and the longitudinal axis along the depth of the cavity 1402 the user is only required to separate the input device 104 from the computing device 102 It can win the magnetic coupling force. However, when a force is applied along another axis (i.e., another angle), the mechanical coupling protrusions 208 are configured to mechanically bind within the cavity 1002. [ Thus, along with the magnetic forces of the mechanical coupling devices 204 and 206, a mechanical force is generated that resists separation of the input device 104 from the computing device 102.

In this manner, the magnetic coupling protrusions 208 can be used to bias the separation of the input device 104 from the computing device 102 and mimic the release of the page from the book, Can be prohibited. Referring again to FIG. 1, in this relatively "flat" orientation, for example mimicking the removal of a page from a book, a user may place the input device 104 on one hand and the computing device 102 on the other hand You can grab it and pull it away from each other. The bendability of the flexible hinge 106 allows the axes of the protrusion 208 and the cavity 1402 to be generally aligned to be separable.

However, in other orientations as shown in Figs. 3 to 7, as the surfaces of the protruding portions 208 are combined with the surfaces of the cavity 1402, separation can be prevented and a firm connection between these devices can be achieved. The protrusions 208 and the cavities 1402 may be oriented relative to one another in various other manners as described above to facilitate separation along the desired axis and to provide a firm connection along the other axis without departing from the spirit and scope of the present invention. have. The protrusion 208 can also be used to provide various other functions in addition to mechanical holding, examples of which will be described with reference to the subsequent drawings.

15 is a perspective view 1500 of a protrusion when configured for signal transmission and / or power transmission between the input device 104 and the computing device 102. As shown in FIG. In this example, the top surface 1502 of the protrusion is configured to be communicatively connectable with a contact disposed within the cavity 1402 of the computing device 1402, and vice versa.

The contact may be any of a variety of ways, such as transferring power from the computing device 102 to the input device, from the auxiliary power source of the input device 104 to the computing device, or conveying signals (e.g., Can be used for the purpose. Also, as shown in top view 1600 of FIG. 16, surface 1502 can be divided to support a plurality of different contacts, e.g., first and second contacts 1602 and 1604, And size can also be considered.

17 is a cross-sectional view 1700 of the protrusion 208 of FIG. 16 when disposed within the cavity 1402 of the computing device 102. FIG. In this example, the first and second contacts 1702 and 1704 include a spring feature that biases the contact outwardly from the cavity 1402. The first and second contacts 1702 and 1704 are configured to contact each of the first and second contacts 1602 and 1604 of the protrusion. The first contact 1707 is configured as a ground and contacts the first contact 1602 of the protrusion 208 before the second contact 1704 touches the second contact 1604 of the protrusion 208 . In this way, input device 140 and computing device 102 can be protected against shorting. Various other examples may be considered without departing from the spirit and scope of the invention.

18 is a view showing an embodiment 1800 showing an exploded view of a self-formed electrical contact 1802 formed as a part of the mechanical coupling protrusions 208, 210. As shown in FIG. As described above, the magnetic coupling devices 204 and 206 of the connection 202 are configured to provide a physical connection between the input device 104 and the computing device 102, which is manually detachable by one or both hands of the user .

The magnetic fields of the magnetic coupling devices 204 and 206 may be adjusted by for example pulling the connection into the alignment so that the mechanical coupling protrusions 208 and 210 locate the corresponding cavity 1402 of Figure 14 within the slot of the computing device 102 May act in conjunction with the magnetic field of the magnet disposed within the cavity of the computing device 102. The mechanical engaging protrusions 208 and 210 also facilitate the formation of a physical connection by inhibiting disengagement by mechanical engagement as described above and thus provide a mechanical advantage created using the input device 104 as a lever You can react.

The mechanical coupling protrusions 208 and 210 are also shown as including an electrical contact 1802. [ The electrical contact 1802 of the present example and subsequent examples may be configured to be self-configurable to remove the oxide layer formed on the contact. In this manner, the electrical contact 1802 can support transmission of more power or data than the prior art, for example, approximately four times more than the amp in the prior art, in contrast to the 1/2 amp transmission. Further explanation of the midnight function using, for example, the wiping motion can be found for the first time in connection with FIG. As before, in another example of this example, although mechanical coupling protrusions 208 and 210 are shown disposed on input device 104 and cavity 1402 and the channel is disposed on computing device 102, The configuration can be reversed without departing from the spirit and scope of the invention, which will be described with reference to FIG.

19 is a view showing an embodiment 1900 in which the magnetic coupling protrusions 210 of FIG. 18 are shown on a level cutting road. 20 is a view showing an embodiment 2000 showing a top view of one of the mechanical coupling protrusions 210 and an electrical contact 1802 disposed thereon. In these examples 1900 and 2000, the electrical contact 1802 is disposed on the face of the mechanical coupling protrusion 210, coinciding with the detachment axis of the connection portion 202 with respect to the channel of the computing device 102.

Although the electrical contact 1802 in Fig. 19 is shown as a leaf spring, the electrical contact 1802 in Fig. 20 is shown as having a shape formed in a round shape. Various other shapes may be considered without departing from the spirit and scope of the present invention.

Each of the mechanical engaging protrusions 208, 210 in these examples is shown as including four electrical contacts 1802. This can be used to support various functions, including redundancy, to support transmission of power or data even in the event of loss of one or more of the electrical contacts 1802. [ For example, the individual electrical contacts 1802 on the mechanical coupling protrusions 208 may be configured such that the use of the electrical contact by each of the mechanical coupling protrusions 208, 210, respectively, And so on.

In this way, including the electrical contact 1802 as part of the mechanical coupling protrusions 208, 210 can be used to support various functions. For example, the molding feature of the plastic housing of the connection 202 can be configured to precisely align the mechanical coupling protrusions 208, 210 with the cavity of the channel of the computing device 102, as described above. The electrical contact 1802 may be configured to support this alignment and not interfere with the physical connection of the input device 104 to the computing device 102. Further, the electrical contact 1802 can be disposed on the surface of the mechanical coupling protrusion 210, which is disposed opposite to the input surface of the input device 104, which is, for example, a keyboard. In this way, the contacts can be protected from contact by the user and can also maintain aesthetic design goals.

Figure 21 illustrates an embodiment 2100 shown through a cross section of a mechanical interlock feature supported by a mechanical coupling protrusion 208 including an electrical connection between the input device 104 and the computing device 102 to be. In this example, the mechanical engaging projection 208 is disposed in the cavity 1402, as described above with respect to FIG. 4, so that it can resist rotation and off-axis movement as shown.

The electrical contact 1802 is configured to support movement biased away from the protrusion 208 to contact the face of the cavity 1402 including the electrical contact 2102. [ In this way, the electrical contact 1802 is configured to be biased against contact with the electrical contact 2101 in the plane of the cavity 1402. [ This biasing can also contribute to the self-cleaning function of the electrical contacts 1802 and 2102, which will be further described below in the corresponding figures.

22 is a view showing an embodiment 2200 showing an isometric cutaway view illustrating the midrange functions of electrical contacts 1802 and 2102 by movement relative to each other. The oxide layer formed on the metal conductor serves to increase the resistance of the electrical contacts 1802 and 2102, thereby lowering the connection efficiency. Energy is lost due to heat generation, which is undesirable for electronic components.

Thus, the electrical contacts 1802 and 2102 are self-configuring using the wiping motion in this example. For example, due to the relatively small contact surface and a relatively high current load (e.g., about 4A per electrical contact 1802, 2102), the wiping motion is such that the detachment movement (shown by the arrows in Figure 22) Metal contact surfaces to slide against each other to remove the oxide layer. Biasing of the electrical contacts 1802 and 2102 along with movement due to removal of the mechanical coupling protrusion 208 with respect to the cavity 1402 can support the self-cleaning function of the electrical contacts 1802 and 2102, Data transmission and data transmission are improved.

23 is a diagram illustrating an implementation 2300 in which the input device 104 and the computing device 102 are configured to support non-arcing connections. In this example, the electrical contact 1802 is arranged to make a connection with the electrical contact 2102 in the cavity 1402 before a connection is made between the communication contacts 212, 910. This ensures that no power is present at the time of connection or disconnection, since the data connection in this example adjusts the power flow between the input device 104 and the computing device 12. [

This can be achieved by staggering the electrical contacts 1802 and 1102 of the mechanical coupling protrusions 208 and 210 and the communication contacts 212 and 910 along the detachment axis (e.g., the gap can be approximately 0.5 mm). Other examples of allowing a power-assisted connection to occur before a data transfer support connection between the computing device 102 and the input device 104 may also be considered.

The design considers several techniques for manufacturing assemblies. The electrical contact 1802 pushes the plastic carrier 2402 into the plastic housing 2404, as shown in the exploded view 2400 of FIG. Thereafter, a wire or a flexible printed circuit (FPC) may be attached. Similarly, the carrier 2406 and the plastic carrier 2402 may be formed as a single assembly. In addition, after the electrical contact 1802 and the communication contact 212 are assembled, the FPC can be attached before being inserted into the plastic housing 2404. Other modifications and combinations of parts shown may be understood by one of ordinary skill in the art and are otherwise apparent.

25 is a view showing an embodiment 2500 showing the electrical contact 1802 of FIG. 24 in more detail. The electrical contact 1802 of the present example is configured to support a number of cycles involving detachment, e.g., at least a full turn. Further, each of the electrical contacts 1802 and 2102 in this example is configured to transmit a current of at least 4.5 A without appreciable temperature rise. Base material, material thickness, spring strain, spring length (L), physical shape, beam cross-section, surface finish, etc., to increase and decrease the amount of power or communication that can be supported by the contact, A change in the surface coating or the like can be made in the electrical contact.

26 is a view showing an embodiment 2600 in which the electrical contact 1802 is formed to have a round shape. As shown, the electrical contact 1802 is rounded and has a base, which is formed at the same height as the housing of the mechanical coupling protrusion 208 to prevent inadvertent snagging of the electrical contact 1802 .

The tight spacing between the housing of the mechanical engaging projection 208 and the electrical contact 1802 can also help prevent plastic deformation of the electrical contact at the time of side loading. Moreover, the housing of the mechanical engaging projection 208 can function to prevent the electrical contact 1802 from being deformed more than the distance "d" as shown. For example, deformation greater than the distance "d " can sustain contact deformation and reduce or eliminate electrical contact interference used for conduction.

Figures 27 and 28 illustrate embodiments 2700 and 2800 of alternative design combinations in which electrical contact 1802 is included on computing device 102 and electrical contact 2102 is included on input device 104. [ Fig. As shown, the electrical contact 2102 on the input device 104 is stationary or fixed and not flexible. On the other hand, the electrical contact 1802 on the computing device 102 is configured to move and is biased using a spring-like movement. It should also be appreciated that although a cavity is formed as part of the computing device 102 and a mechanical engaging projection is formed as part of the input device 104, this design may be reversed without departing from the spirit and scope of the present invention.

29 and 30 are diagrams illustrating embodiments 2900 and 3000 of an electrostatic discharge device 2902 that are configured to protect the communication contact 910 of the computing device 102. [ Electrostatic discharge can adversely affect components of the computing device 102, such as integrated circuits, memory devices, processors, and the like. For example, while providing a path through which data is communicated to components of computing device 102, communication contacts 910 may also provide the same path through which electrostatic discharge reaches these components.

Thus, the electrostatic discharge device 2902 may be configured to provide a path 2904 through which the electrostatic discharge is grounded without reaching the components of the computing device 102. For example, the electrostatic discharge device 2902 may include a metal contact 2906 (e.g., formed as a sheet metal or other metal configuration) disposed proximate the communication contact 910 of the computing device.

The metal contacts 2906 may be electrically connected to the plate 2906 (which may be constructed using one or more wires) through an electrical connection configured as a screw 2910 in this example. In addition, the plate 2908 may be connected to the printed circuit board 3002 of the computing device 102 to provide grounding. In this manner, the static charge that may be formed on the user's body is lost using the path 2904 provided by the electrostatic discharge device 2902, thereby avoiding potential damage to the components of the computing device 102 . Figures 31 and 32 illustrate an exploded view of the components of the electrostatic discharge device 2902 (3100, 3200). In FIG. 32, pins 1, 2, 9, and 10 include electrical contacts 2102, and pins 3-8 are configured as communication contacts 910.

33 is a diagram illustrating an embodiment 3300 in which the connector utilized to support the communication contact 910 of the computing device 102 serves as a structural support. The connector 3302 used to hold the communication contact 910 (and available for the electrical contact 2102) is in this case the bezel 3306 of the display module and the housing 3308 of the computing device 102, To generate a direct load path 3304 therebetween.

As a result, this enables a continuous joining perimeter between the glass 3310 and the adhesive 3312 used to bond the glass 3310 to the glass bezel 3306. [ And also provides a continuous perimeter between the bezel 3306 of the display module and the housing 3308, which in turn includes the communication contact 910 due to space constraints, thereby causing the periphery to break.

Examples of systems and devices

FIG. 34 illustrates an exemplary system with an entirety 3400 including an example of a computing device 3402 representing one or more computing systems and / or systems capable of implementing the various techniques described herein. The computing device 3402 may be configured to illustrate a mobile configuration using a housing formed, for example, in a size that can be held by one or both hands of a user, examples of which are mobile phones, mobile games and music devices, Tablet computers are included, but other examples can be considered.

As shown, exemplary computing device 3402 includes a processing system 3404, one or more computer readable storage media 3406, and one or more I / O interfaces 3408 communicatively coupled to one another . Although not shown, computing device 3402 may further include a system bus or other data and command transmission system for coupling various components together. The system bus may include any one or combination of different bus structures, such as a memory bus or memory controller, a peripheral bus, a universal serial bus (USB), and / or a process utilizing any of a variety of bus architectures . Various other examples such as control and data lines are also contemplated.

Processing system 3404 represents the ability to perform one or more operations using hardware. Accordingly, the processing system 3404 is shown as including a hardware element 3410 that can be configured as a processor, functional block, and the like. This may include an implementation in hardware as an application specific integrated circuit (ASIC) or other logic device formed using one or more semiconductors. The hardware element 3410 is not limited by the material being formed or the processing mechanism employed therein. For example, the processor may be comprised of semiconductors and / or transistors (e.g., electronic integrated circuits (ICs)). In such situations, the processor executable instructions may be electronically executable instructions.

The computer readable storage medium 3406 is shown as including a memory / storage 3412. Memory / storage 3412 represents memory / storage capacity associated with one or more computer-readable media. The memory / storage component 3412 may include volatile media (such as random access memory (RAM)) and / or non-volatile media (read only memory (ROM), flash memory, optical disk, magnetic disk, The memory / storage component 3412 may include fixed media (e.g., RAM, ROM, fixed hard drive, etc.) and removable media (e.g., flash memory, removable hard drive, optical disk, etc.). The computer-readable storage medium 3406 can be configured in a variety of ways as described further below.

The input / output interface 3408 represents a function that allows a user to enter commands and information into the computing device 3402, and the ability of the information to be provided to the user and / or other components or devices using various input / output devices . Examples of input devices include a keyboard, a cursor control device (e.g., a mouse), a microphone, a scanner, a touch function (e.g., capacitive or other sensor configured to detect a physical touch), a camera (e.g., And non-visible or visible wavelengths such as infrared frequencies capable of recognizing the same motion can be adopted). Examples of output devices include display devices (e.g., monitors or projectors), speakers, printers, network cards, tactile-response devices, and the like. Accordingly, the computing device 3402 may be configured in a variety of ways that can support user interaction.

Computing device 3402 is also shown as being physically and communicatively coupled to input device 3414, which is physically and communicatively detachable from that computing device 3402. In this way, the various input devices can be coupled to a computing device 3402 having various configurations capable of supporting various functions. In this example, the input device 3414 includes one or more keys 3416 that may be configured as decompression keys, mechanical switch keys, and the like.

The input device 3414 is shown as including one or more modules 3418 that can be configured to support various functions. For example, one or more modules 3418 may determine whether a keystroke is intended, determine whether the input represents resting pressure, and provide authentication of the input device 3414 for operation to computing device 3402 Or to process analog and / or digital signals received from key 3416, for example.

Various techniques may be described herein in the general context of software, hardware elements, or program modules. In general, such modules include routines, programs, objects, elements, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The terms "module", "functionality", and "component" as used herein generally refer to software, firmware, hardware, The features of the techniques described herein are platform-independent, which means that the technology can be implemented on a variety of commercial computing platforms with various processors.

Implementations of the above-described modules and techniques may be stored on or transmitted via some form of computer readable media. Computer readable media can include a variety of media that can be accessed by computing device 3402. [ By way of example, and not limitation, computer readable media may comprise "computer readable storage media" and "computer readable media".

"Computer-readable storage medium" may refer to a medium and / or device that enables permanent and / or non-transient storage of information, in contrast to a simple signal transmission, a carrier wave, or the signal itself. Thus, a computer-readable storage medium may refer to non-signal bearing media. Computer readable storage media includes volatile and nonvolatile, removable and non-removable storage media implemented in any method or technology suitable for storing information such as computer readable instructions, data structures, program modules or logic element (s) / circuitry And / or storage devices. Examples of computer-readable storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical storage, hard disk, magnetic cassette, magnetic tape, Magnetic storage devices, or other storage devices, tangible media, or manufactured articles suitable for storing the desired information and accessible by a computer.

May refer to, for example, a signal-bearing medium that is configured to transmit instructions to the hardware of computing device 3402 over the network. Typically, the signal medium may include computer readable instructions, data structures, program modules, or other data within a modulated data signal such as a carrier wave, a data signal or other delivery mechanism. The signal medium also includes any information delivery media. A "modulated data signal" means a signal that has one or more of its distinctive sets or that is changed in such a way as to encode information in the signal. By way of example, and not limitation, communication media includes wired media such as a wired network or direct-wired connection, and wireless media such as acoustic, RF, infrared, and other wireless media.

As described above, hardware element 3410 and computer readable medium 3406 may be embodied in some embodiments for implementation in at least some aspects of the techniques described herein, such as performing one or more instructions Programmable device logic and / or fixed device logic, implemented in hardware form. The hardware may include integrated circuits or on-chip systems, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), components of CPLDs (complex programmable logic devices) . In this context, the hardware is a processing device that performs platform tasks defined by the instructions and / or logic contained in the hardware, and hardware used to store instructions for execution, such as the above-described computer readable storage medium As shown in FIG.

Combinations of the foregoing may also be employed to implement the various techniques described herein. Thus, the software, hardware, or executable module may be implemented as one or more instructions and / or logic contained on one or more hardware elements 3410 on some form of computer readable storage medium. Computing device 3402 may be configured to implement specific instructions and / or functions corresponding to software and / or hardware modules. Thus, an implementation of a module executable by the computing device 3402, such as software, may be implemented at least partially within hardware, for example, using the hardware elements 3410 and / or the computer readable storage medium of the processing system 3404 . The instructions and / or functions may be executable / operable by one or more manufactures (e.g., one or more computing devices 3402 and / or processing system 3404) to implement the techniques, modules and examples described herein .

conclusion

Structural features and / or methodological steps Although the embodiments have been described in language specific, it should be understood that the implementations set forth in the appended claims are not necessarily limited to the specific features or steps described above. Rather, the specific features and steps are disclosed as embodiments that implement the claimed features.

Claims (10)

In an input device,
An input configured to generate a signal to be processed by the computing device;
A connection attached to the input using a flexible hinge and configured to be communicatively coupled to the computing device for communicating the generated signal and to be physically connected to the computing device;
Wherein the connection comprises:
A projection configured to be disposed within a channel formed in the housing of the computing device;
A protrusion disposed on the protrusion and configured to be received in a cavity formed as part of the channel,
Wherein the protrusions comprise an electrical contact configured to be self-cleaning by movement of the protrusion relative to the cavity and configured to transfer power between the input device and the computing device Lt; / RTI > The electrical contact of claim 1, wherein the electrical contact is self-contained by a wiping motion sufficient to remove at least a portion of the oxide disposed on the electrical contact through movement to at least a portion of the computing device. -cleaning). The electronic device of claim 1, wherein the electrical contact comprises: a wiping motion configured to be biased to contact an edge of the cavity, thereby performing the midnight function; and an ability to transmit power between the input device and the computing device To the input device. The input device according to claim 1, wherein the protrusion includes a plurality of the electrical contacts. 5. The input device of claim 4, wherein at least some of the plurality of electrical contacts are configured to transmit more than one amp of electricity. 2. The apparatus of claim 1 wherein the protrusions are configured to be separated from the cavity along an axis defined by the height of the protrusion from the protrusion and coinciding with the wiping motion and to resist movement along at least one different axis Input device. 7. The input device of claim 6, wherein the protrusions are configured to mechanically bind within the cavity to resist movement along the at least one different axis. 2. The input device of claim 1, wherein the connection is further configured to form a physical connection using magnetism. In a computing system,
A computing device and an input device configured to physically and communicatively coupled,
A protrusion configured to be disposed within the channel,
A communication contact configured to contact a contact in the channel to support a communicative connection;
A projection disposed on the projection and configured to be received in a cavity configured as part of the channel;
Wherein the protrusion is configured to engage wiping motion when the protrusion moves within the cavity and to transfer power between the input device and the computing device. In a computing system,
A computing device and an input device configured to physically and communicatively coupled,
A protrusion configured to be disposed within the channel,
A communication contact disposed on the protrusion and configured to provide a communicative connection with a contact in the channel;
An electrostatic discharge device configured to protect the communication contact from electrostatic discharge by providing a path from the protrusion to ground an electostatic discharge,
Lt; / RTI >

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