Portable electronics device having keypad and removable bezel

Information

  • Patent Grant
  • 6488425
  • Patent Number
    6,488,425
  • Date Filed
    Tuesday, October 10, 2000
    24 years ago
  • Date Issued
    Tuesday, December 3, 2002
    22 years ago
Abstract
An electronics device having a removable bezel to facilitate cleaning of a keypad structure. The electronics device includes a housing that defines and encloses an interior of the electronics device. Keys included in a keypad structure are formed on a surface of the housing in a manner such that spaces may exist between the keys and the housing. A pliable structure is positioned over and substantially conforms to the keys and the adjacent portions of the housing so as to cover the opening near the keys and to further seal the housing. A removable bezel covers the keypad structure, including at least a portion of the pliable structure. The bezel has openings through which the keys extend, permitting users to depress keys while the bezel is positioned on the electronics device. The bezel, in combination with the keys, provides a keypad surface that enables users to conveniently enter information into the electronics device. In response, for example, to water, dirt, or dust being exposed to the electronics device, the bezel can be removed to allow access to the keys and the pliable structure, which can then be cleaned as needed.
Description




BACKGROUND OF THE INVENTION




1. The Field of the Invention




The present invention relates to portable electronics devices, such as handheld computers. Specifically, the present invention relates to removable bezels that can be selectively removed from a keypad structure of the portable electronics device so as to facilitate convenient cleaning of the electronics device.




2. The Prior State of the Art




During recent decades, electronics devices have become smaller, more lightweight, and more widely used in a variety of industries and endeavors. Early computers used vacuum tubes and other large-scale components and, accordingly, were large devices that were immovable fixtures and at times could fill an entire room. With the advent of liquid crystal display devices, integrated circuits and silicon semiconductor chips, computers and other electronics devices have steadily increased in computing power and decreased in size.




In recent years, the demand for access to computing power, coupled with the significant decrease in computer size has yielded portable electronics devices, such as laptop computers, which enable users to carry computing resources that previously were limited to relatively fixed, desktop computers. Special-purpose computing and communication devices have also been developed, including digital personal assistants, cellular phones, global positioning system receivers, and any number of other electronics devices.




This proliferation has taken computers and electronics devices from the relatively sterile conditions of the laboratory and the office to environments and industries where the devices are more likely to experience dirty or adverse conditions, including transportation environments, manufacturing, agriculture, natural resource industries, etc. Some electronics devices have been designed specifically for use outdoors and in other dirty or unpredictable environments. These devices are typically rugged, and can withstand some amount of vibration and shock, dust, dirt, and exposure to water or foreign material.




Most rugged electronics devices include keyboards or other keypad structures that enable users to input information or to manipulate the information displayed on a display device. Practically all keypads share a common feature of movable keys that are depressed by the user to input information. The interface between the movable keys and the fixed housing of the electronics devices causes dirt to accumulate, which can eventually interfere with the operation of the keys or other parts of the device. Moreover, there are often gaps or spaces between movable keys and the housing that can allow water, dust, or dirt to enter the interior of an electronics device. Lettering and/or numbering is also typically printed or formed on keypad structures, on or near the keys. Providing surfaces on which lettering and numbering can be printed increases the complexity of the keypad structure, thereby further complicating the process of cleaning the device. In addition, the need to clearly view lettering and numbering on keypad structures increases the importance of providing devices that can be conveniently cleaned when they become dirty.




Conventional portable electronics devices often have keypad structures that are difficult to clean. The movable keys and the associated housing sometimes represent the weak link that prevents electronics devices from being fully resistant to water, dust, and other adverse environmental conditions. This problem is made more serious by the increasing demand for rugged electronics devices that allow computing resources to be accessed in any environment.




SUMMARY OF THE INVENTION




The present invention relates to a removable bezel assembly associated with a keypad structure for use with electronics devices, particularly portable devices that are intended to be used in environments where exposure water, dust, dirt, or other adverse conditions can be expected. The bezel is removable so as to permit convenient cleaning of both the bezel and the keypad structure with which it is associated.




According to one aspect of the invention, an electronics device, such as a handheld computer or another portable electronics device, has a set of keys arrayed on a keypad structure. The keys can be depressed by users to allow the users to input information. In order to cause the electronics device to withstand exposure to dust, dirt, or the like, the movable keys of the keypad structure and the housing in which they are arrayed are covered with a pliable protective structure, such as one formed from a polymeric material. The pliable protective structure substantially conforms to the housing and the keys in a manner such that users can distinguish individual keys and can depress the keys by pushing on the surface of the pliable material situated atop the ends of the keys.




A removable bezel, typically formed from a substantially rigid material, is removably positioned over the housing and the polymeric material over the region of the display device associated with the keypad structure. The bezel has openings formed therethrough, and the openings are arrayed on the bezel to align with the keys when the bezel is positioned on the electronics device. When the bezel is in position, the keys extend through the openings and can be accessed by the user. The bezel, in combination with the keys, presents the user with a keypad surface that enables the user to conveniently depress keys and input information. Lettering and/or numbering can be formed on either the keys, the bezel, or both.




During normal operation of the electronics device, the bezel is in position on the housing. As the electronics device is used and exposed to conditions where dust or dirt is present, the dust or dirt can accumulate on the exposed surface of the bezel, on the exposed keys, on the backside of the bezel, and on the pliable protective structure under the bezel. The conforming nature of the polymeric material substantially prevents dirt, water, or other foreign materials from entering the inside of the housing through the keypad structure.




The keypad structure, along with the remaining portions of the electronics device, can be cleaned by removing the removable bezel from the housing. The front surface, the back surface, and the openings of the bezel can be cleaned when it has been removed from the housing. Removing the bezel also exposes the pliable protective structure conforming to the keys and the housing so that it can also be conveniently cleaned. After cleaning, the bezel can be repositioned so that the electronics device can be used again.




The removable bezel of the invention facilitates cleaning of electronics devices in ways that have not been possible in the prior art. Moreover, the use of the bezel in combination with the pliable protective structure that covers and conforms to the keys and the housing prevents water, dirt, or dust from entering the housing in the spaces that would otherwise exist between the keys and the housing in the absence of the invention. Thus, the present invention can prolong the use of electronics devices in adverse environments and can make existing electronics devices more adaptable to any desired conditions.




Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The features and advantages of the invention may be realized and obtained by means of the instruments and combinations particularly pointed out in the appended claims. These and other features of the present invention will become more fully apparent from the following description and appended claims, or may be learned by the practice of the invention as set forth hereinafter.











BRIEF DESCRIPTION OF THE DRAWINGS




In order that the manner in which the above-recited and other advantages and features of the invention are obtained, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Understanding that these drawing depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:





FIG. 1

is a perspective view of a handheld computer that includes a removable bezel according to the invention.





FIG. 2

illustrates the bezel of the handheld computer of

FIG. 1

having been removed from the keypad structure to facilitate cleaning of various portions of the computer.





FIG. 3

illustrates a portion of a pliable protective structure that conforms to the keypad structure of the handheld computer.





FIG. 4

illustrates a touch sensitive screen associated with the handheld computer, wherein the touch sensitive screen can be selectively disabled to facilitate cleaning of the screen.





FIG. 5

is a back perspective view of the handheld computer of FIG.


1


.





FIG. 6A

shows a user holding the handheld computer of

FIG. 1

using one hand in a first grip.





FIG. 6B

illustrates a user holding the handheld computer of

FIG. 1

using one hand in a second grip.





FIG. 6C

illustrates a user holding the handheld computer of

FIG. 1

using two hands in a third grip.





FIG. 7

is a perspective view of the handheld computer of

FIG. 1

showing an expansion port in relation to a sealed interface between a front portion and a back portion of the housing.





FIG. 8

is a side view of the handheld computer of

FIG. 1

, showing the angular position of the screen with respect to the keypad structure.











DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS




The present invention relates to electronic devices having housings with selectively removable bezels that can be removed to provide access to a keypad structure for cleaning. The removable bezel is positioned generally over the keypad structure when attached to the housing and has holes through which keys of the keypad structure can be depressed by a user. When dirt, dust, water, or the like, is exposed to the electronics device, the bezel can be removed so that the interior of the keypad structure, as well as the bezel, can be cleaned. In this manner, the keypad structure of the electronics device can be kept free of dirt or other material that could otherwise interfere with its operation.




The removable bezel assemblies of the invention are described herein in the context of a handheld, portable computer. The handheld computer specifically disclosed herein represents handheld electronics devices in which the invention can be practiced. The removable bezel assembly can exist with or without the other novel features described in reference to the portable computer. An electronics device that has the removable bezel assembly disclosed herein can be conveniently cleaned when the electronics device becomes dirty. When combined with the other features disclosed herein, an electronics device with the removable bezel can be comfortably held for long periods and can withstand harsh environmental conditions in other ways.





FIG. 1

is a perspective view of a handheld computer having the bezel that can be selectively removed according to one embodiment of the invention. The computer


10


has a housing


12


that encases the processing components of the computer and protects the computer from environmental conditions. Housing


12


is an example of housing means for defining and enclosing an interior of an electronics device. Computer


10


has a display device, the screen of which is shown in

FIG. 1

at reference number


14


. A keypad structure


16


with alphanumeric keys


18


is positioned on the front surface


20


of housing


12


, and represents an example of key means for generating input to an electronics device upon being manipulated by a user. Computer


10


has a removable bezel that will be disclosed in greater detail below.




1. Removable Bezel




A removable bezel that facilitates the cleaning of the keypad structure of computer


10


of

FIG. 1

is illustrated in greater detail in FIG.


2


. Bezel


22


is illustrated in

FIG. 2

as having been removed from housing


12


. When positioned on housing


12


, bezel


22


is snap-fitted or otherwise removably attached to front surface


20


of housing


12


generally over keypad structure


16


. Bezel


22


has an array of holes


24


that are in registry with the corresponding keys


18


of keypad structure


16


, such that when the bezel is positioned on housing


12


, the keys


18


extend through the corresponding holes


24


. With bezel


22


positioned on housing


12


, keys


18


are accessible and keypad structure


16


can be used in a normal manner to input data to computer


10


. The front surface of bezel


22


and the exposed portion of keys


18


represent a keypad surface to which the user can input data. Lettering and/or numbering can be printed on bezel


22


, on keys


18


, or both. In the embodiment illustrated in

FIG. 2

, bezel


22


is a substantially rigid structure formed of a polymeric material or another material that is readily cleaned.




A removable bezel assembly illustrated in

FIG. 2

is particularly useful where computer


10


is used in environments where exposure to water, dust, dirt, or other adverse conditions can be expected. Bezel


22


is removable to allow both the front and back surfaces of the bezel to be cleaned when it is exposed to dust, dirt, or other adverse environmental conditions. Moreover, removing bezel


22


from computer


10


allows the keypad structure


16


to be conveniently cleaned. While removable bezel


22


can be attached to housing


12


in substantially any manner, constructing bezel


22


such that it can be removed manually and without tools can be advantageous in many situations.




In this embodiment, keypad structure


16


includes a pliable protective structure


26


, shown in both

FIGS. 2 and 3

, formed from a polymeric material that conforms to keys


18


and to housing


12


in a manner that seals the interior of housing


12


and also presents a surface with relatively few intricacies for cleaning. The periphery of pliable protective structure


26


is sealingly fitted against the inside surface of housing


12


to prevent water or other material from entering the interior of the housing. In particular, in one embodiment, the pliable protective structure


26


covers spaces that would otherwise exist between keys


18


and housing


12


and prevents foreign materials from entering the interior of the housing through such spaces. Moreover, the pliable protective structure


26


provides protection for keys


18


and a substantially non-slip surface for contact with the user's fingers when the user depresses the keys to the keypad structure.




Pliable protective structure


26


is an example of protective means for covering the keypad structure and a portion of the housing and for preventing foreign material from entering the interior of the housing through the keypad structure. Moreover, bezel


22


is an example of a structure that corresponds to removable means for covering the keypad structure and the pliable protective structure and for being removed to expose the keypad structure and the pliable protective structure to facilitate cleaning of these structures.




When portable computer


10


is exposed to dirt, dust, or other adverse environmental conditions, the removable bezel


22


is removed to expose pliable protective structure


26


. In this manner, keypad structure


16


can be easily wiped clean of any dirt or dust and can remove any foreign material that would otherwise be trapped within the keypad structure of the computer. Moreover, pliable protective structure


26


seals the interior of housing


12


such that water or other cleaning agents do not enter the interior of housing


12


and potentially damage the processing components of computer


10


.




The foregoing selectively removable bezels can be used with portable electronics devices that have any type of display device, housing, or expansion ports and, indeed, can be used with portable electronics devices that have no display device or expansion ports. Thus, the invention can be practiced with or without the other novel structures disclosed hereinafter, including the selectively disabled touch sensitive screen, the expansion port, and the ergonomic features of the housing. However, including some or all of these other novel structures in addition to the removable bezel can result in a portable electronics device that can be both held comfortably and conveniently used in adverse environmental conditions. Thus, the description will now proceed to these additional novel features.




2. Touch Sensitive Screen





FIG. 4

illustrates a touch sensitive screen, the touch sensitivity of which can be selectively disabled to permit the user to clean the touch sensitive screen without causing input to be inadvertently entered to computer


10


. Touch sensitive screen


14


can be any desired touch sensitive screen, including those that are currently used in consumer electronics devices. Touch sensitive screen


14


can be used in combination with or in place of a keypad structure. While touch sensitive screens are one of the most intuitive forms of input devices, conventional touch sensitive screens can be cleaned only when the entire electronics device or the entire display device is disabled or powered down.




Rather than requiring the entire computer


10


or the entire display device to be disabled or powered down, only the touch sensitivity of screen


14


is disabled. Thus, when computer


10


is exposed to dust, dirt, water, or other adverse environmental conditions, and the user wishes to wipe or clean off screen


14


, the user can merely disable the touch sensitivity of the screen prior to cleaning. Once the touch sensitivity is disabled, the user can clean the screen


14


using a hand or any object as desired without the risk of applying pressure to screen


14


that would cause input to be inadvertently entered to computer


10


. Moreover, because the entire computer


10


or the entire display device is not disabled, the user can continue to view information on screen


14


while the touch sensitivity of the screen is disabled. In this manner, users can find that the screen can be cleaned more quickly and more conveniently than has been possible in conventional devices. After the user has cleaned screen


14


as desired, the touch sensitivity of the screen can be re-enabled so that the screen can again be used as an input device.




Disabling the touch sensitivity of screen


14


can be performed in one of a variety of ways. For instance, touch sensitive screen


14


can include a pressure sensitive region and an associated portion of a displayed image


28


that, when touched, responds by disabling the touch sensitivity. Alternatively, a key


29


located in a keypad structure or any other position on computer


10


can be used to disable the touch sensitivity of screen


14


. Those skilled in the art will recognize that there are a variety of structures that can be used to receive input from the user requesting that the touch sensitivity be enabled or disabled. Computer


10


includes hardware circuitry, software logic, or a combination thereof that responds to input requesting enablement and disablement of the touch sensitivity. For example, a hardware mechanism for disabling the touch sensitivity can cause electrical signals generated by touch sensitive screen


14


to not be generated, can cause the screen to not react to pressure, or can interfere with such electrical signals such that computer


10


fails to respond thereto. Software mechanisms can interfere with the ability of software associated with touch sensitive screen


14


to operate in response to pressure or can cause other software operating on computer


10


(i.e., operating systems, applications) to fail to respond to signals generated by the screen. Thus, “disabling” touch sensitivity, as used herein, refers to acts associated with causing touch sensitive screen


14


to fail to respond to applied pressure and also refers to acts associated with causing computer


10


to not respond to input signals generated by touch sensitive screen


14


. Those skilled in the art will recognize, upon learning of the disclosure made herein, that other mechanisms and structures for disabling touch sensitivity can be used.




3. Ergonomic Features of Housing





FIG. 5

is a back perspective view of computer


10


of

FIG. 1

, showing several of the ergonomic features that can allow the computer to be held comfortably by a user.

FIG. 5

illustrates a back surface


30


of housing


12


and lateral surface


32


. Another later surface is positioned on an opposite side of housing


12


from lateral surface


32


shown in FIG.


5


. As one part of the ergonomic features, back surface


30


has formed therein a shallow depression


34


for engaging the fingers portions of the palm of a hand of a user who holds computer


10


. Depression


34


can take any of a variety of shapes, so long as the user's fingers or a portion of the palm can be received therein or can grip housing


12


in the depression. In the embodiment illustrated in

FIG. 5

, depression


34


has an oblong shape with the major axis aligned with the longitudinal axis of computer


10


and situated at the midline


36


of housing


12


. A depression


34


having this position and shape enables the computer


10


to be held equally well with either hand and permits several fingers to potentially grip housing


12


within depression


34


. In another embodiment, depression


34


takes the form of elongate channel formed on back surface


12


along midline


36


, which also enables the fingers or the palm of the hand to grip the housing.





FIG. 5

also illustrates how housing


12


and the body of computer


10


can be described conceptually in terms of three regions or sections, which together form a unitary or integrated device. In particular, housing


12


can be described as having a middle gripping region


38


positioned between a top section


40


and a bottom section


42


. As shown in

FIG. 5

, the conceptual boundaries between these portions


38


,


40


, and


42


can be generally defined by dotted lines


43


, which are presented for illustration purposes. Middle gripping region


38


can be narrower than the adjacent top section


40


and bottom section


42


, so that the user's hand does not tend to slip upwards or downwards away from gripping region


38


.




Yet another ergonomic feature of this embodiment relates to rounded corners


44


at the portion of housing


12


where lateral surfaces


32


meet back surface


30


. Rounded comers


44


, in contrast to relatively sharp comers of housings found in other portable electronics devices, allow computer


10


to be comfortably held in a user's hand or hands for extended periods of time without causing discomfort.




Other ergonomic features, in addition to those described above in reference to

FIG. 5

, are illustrated in FIG.


1


. For instance housing


12


can have rounded corners


60


where front surface


20


and lateral surface


32


meet. These rounded comers further enhance the comfort of the user when computer


10


is held for extended periods of time.




Another ergonomic feature of computer


10


according to one embodiment is the angular position of screen


14


with respect to the position of the remainder of front surface


20


, as illustrated in

FIG. 8

, which is a side view of computer


10


. In this embodiment, the screen, the position of which is indicated by reference number


14


, defines a plane


70


and a line


72


normal thereto that extends away from screen


14


. Similarly, the keypad structure, the position of which is indicated by reference number


16


, defines another plane


74


and a line


76


normal thereto that extends away from the keypad structure


16


. Rather than the plane


74


defined by keypad structure


16


and the plane


70


defined by screen


14


being coplanar or parallel, these two planes are angularly displaced relative to one another. Stated another way, the two normal lines


76


and


72


are nonparallel and can intersect one with another at a position above keypad structure


16


.




The result of the geometry illustrated in

FIG. 8

is that screen


14


is tilted upwards from the plane


74


defined by keypad structure


16


so that it can be more easily viewed by the user while the user hold computer


10


. Positioning screen


14


in this manner avoids the situation where the user is required to repeatedly rotate the wrist as the user alternates between using keypad structure


16


and viewing screen


14


. Moreover, the user can simultaneously view screen


14


and use keypad structure


16


, with both being in a comfortable position.





FIGS. 6A-6C

illustrate computer


10


of

FIG. 5

being held by a user in three different positions that take advantage of the shape of housing


12


. These three positions are not exhaustive of the ways in which a user can hold computer


10


, but do illustrate that the user can shift between positions and can select a position according to the particular task that is being performed with computer


10


.

FIGS. 6A-6C

also illustrate other ergonomic features of computer


10


.




Turning first to

FIG. 6A

, the user is grasping the gripping region


38


of housing


12


with one hand, with the upper portion of the palm being positioned on the depression of the back surface. For instance, the depression


34


, shown in

FIG. 5

, can engage the rounded portion of the palm that is opposite the knuckles of the fingers, particularly the index and middle fingers. Positioning this portion of the palm of hand in the depression inhibits slippage of housing


12


with respect to the user's hand.




As further illustrated in

FIG. 6A

, fingers


52


are wrapped around one lateral surface of gripping region


38


and thumb


50


is wrapped around the other lateral surface. With the hand in this position, the user can view screen


14


and to have the other hand free to enter information into the keypad structure


16


or to engage in other activities.





FIG. 6B

illustrates computer


10


being grasped by the user with one hand in another position. In this position, one or more of the fingertips or another portion of the fingers are positioned in the depression on the back surface of housing


12


. Positioning the fingertips or another portion of the fingers within the depression in this manner allows the user to firmly grasp computer


10


. The center portion of the palm is positioned at lateral surface


32


of gripping portion


38


as illustrated in

FIG. 6B

, with the thumb of the hand and the nearby portions of the palm being positioned at or near the front surface


20


. This position enables the user to have one free hand and to enter data to keypad structure


16


using the free hand or thumb


50


of hand


54


.





FIG. 6C

illustrates a user grasping computer


10


using two hands. In this position, the fingertips or another portion of one of more fingers of both hands


54


engage the depression on the back surface of housing


12


. Portions of the palms of the hands rest on the lateral surfaces


32


of gripping section


38


. Both thumbs


50


are positioned on or over keypad structure


16


and are available to depress keys


18


to enter information into computer


10


. Using both thumbs


50


enables faster keying of data than is possible using only one thumb


50


. This position also allows the user to grasp computer


10


in a highly secure manner while simultaneously enter information into the computer.




4. Expansion Port





FIGS. 7 and 8

illustrate one embodiment of computer


10


having an expansion port that accepts expansion cards, peripheral devices, communication devices, or any other structure that currently exists or that will be developed in the future to enhance the capabilities of computer


10


. In

FIGS. 7 and 8

, computer


10


is a rugged portable computer that has features adapted to protecting processing components housed in housing


12


from adverse conditions, dirt, water, dust, etc. Housing


12


is formed from a front portion


84


and a back portion


86


that are connected at or by a gasket or another sealing structure at seal


88


. In order to enhance the watertight nature of seal


88


, the associated gasket can be formed of a pliable material that conforms to both front portion


84


and back portion


86


. As shown in

FIGS. 7 and 8

, seal


88


and the associated gasket do not lie in a single plane, but are displaced upwards in the portion of seal


88


that is included in the top section


40


of computer


10


.




Seal


88


is positioned so that an expansion port, which is shown generally at reference number


90


, can be formed in top section


40


without straddling or interfering with the integrity or the operation of seal


88


and the associated gasket or other sealing structure. In this embodiment, expansion port


90


is positioned within back portion


86


of housing


12


and behind seal


88


. Expansion port


90


is exposed when door


92


is opened (as shown by the phantom lines), thereby allowing an expansion device to be inserted into expansion port


90


.




Positioning seal


88


and expansion port


90


in the manner depicted in

FIGS. 7 and 8

allows computer


10


to be a rugged, substantially watertight computer that can be used in a variety of environmental conditions without being damaged. Moreover, seal


88


and the associated gasket can be relatively simple compared to that which would be necessary if expansion port


90


were to be aligned with, straddle, or interfere with the gasket.




While the location of the expansion port is shown generally at reference number


90


, a specific example of hardware associated with an expansion port is illustrated in

FIG. 7

, which depicts a user-accessible PC card slot


102


and a card


104


having been inserted therein. Card


104


can be mass data storage, an input/output device, or any other expansion device that enhances the capabilities of computer


10


, thereby enabling computer


10


to take advantage of any of a variety existing or future technologies. For instance, computer


10


can be fitted with a global positioning system receiver, a laser bar code scanner, telecommunication devices, or any other such devices.




It should be appreciated that as computer


10


is fitted with various hardware components that the shape and size of door


92


can be modified accordingly to accommodate the storage and configuration requirements of the various hardware components. By modifying the design of door


92


, expansion port


90


is likewise modified, enabling various expansion devices to be inserted into expansion port


90


without affecting the watertight nature of seal


88


. It should also be appreciated that door


92


can be configured so as to be selectively removable and replaceable with alternative embodiments of door


92


in order to accommodate the various storage space requirements of current and future expansion device technologies.




The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.



Claims
  • 1. An electronics device that can be conveniently cleaned, comprising:a housing; a keypad structure including keys positioned at a surface of the housing; a pliable protective structure that covers and substantially conforms to the keys and to the surface, the pliable protective structure sealing an interior of the housing to prevent material from entering the interior of the housing; and a bezel removably positioned over the keypad structure, the bezel having openings through which the keys extend, the bezel being removable to permit the keypad structure to be cleaned, wherein the pliable protective structure seals the interior of the housing when the bezel is removed.
  • 2. The electronics device as recited in claim 1, wherein the keys are positioned at the surface of the housing such that spaces extending into an interior of the housing exist between the keys and the housing, the pliable protective structure further covering the spaces.
  • 3. The electronics device as recited in claim 1, wherein the pliable protective structure comprises a pliable material such that the keys can be depressed through the pliable protective structure.
  • 4. The electronics device as recited in claim 3, wherein the pliable material comprises a polymeric material.
  • 5. The electronics device as recited in claim 1, wherein the pliable protective structure is attached to the housing such that the pliable protective structure and the housing substantially prevent foreign material from entering the interior of the housing through the keypad structure.
  • 6. The electronics device as recited in claim 1, wherein the bezel has printed thereon at least one of lettering and numbering.
  • 7. An electronics device that can be conveniently cleaned, comprising:a housing having a front surface; a keypad structure including keys positioned at the front surface of the housing; a pliable protective structure formed from a polymeric material, the pliable protective structure covering and substantially conforming to the keys and to a portion of the front surface such that the keys can be depressed through the pliable protective structure and an interior of the housing is sealed from an exterior of the housing; and a bezel removably positioned over the keypad structure, the bezel having openings through which the keys extend, the bezel being removable to permit the pliable protective structure to be cleaned, wherein a keypad surface including a front surface of the bezel and a portion of the pliable protective structure that covers the ends of the keys is presented to a user and the pliable protective structure seals the interior of the housing when the bezel is removed.
  • 8. The electronics device as recited in claim 7, wherein the bezel is formed from a substantially rigid material.
  • 9. The electronics device as recited in claim 7, wherein the pliable protective structure covers the keys to the extent that the keypad structure is substantially watertight such that water cannot enter the interior of the housing through the keypad structure.
  • 10. The electronics device as recited in claim 7, wherein the pliable protective structure and the housing are sealingly engaged about a periphery of the keypad structure.
  • 11. An electronics device having a keypad that can be conveniently cleaned, comprising:housing means for defining and enclosing an interior of the electronics device; key means for generating input to the electronics device upon being manipulated by a user; protective means for covering the key means and a portion of the housing means and for sealing the interior of the housing means to prevent foreign material from entering the interior through the key means; and removable means for covering the key means and the protective means and for being removed to expose the key means and the protective means to facilitate cleaning of the key means and the protective means, wherein the protective means seals the interior of the housing when the removable means is removed; and wherein the removable means comprises a bezel removably attached to the housing means, the bezel having an array of holes through which the key means extend when the bezel is attached to the housing means.
  • 12. The electronics device as recited in claim 11, wherein the housing means comprises a housing having a front portion and a back portion having a sealed interface therebetween.
  • 13. The electronics device as recited in claim 11, wherein the protective means comprises a protective pliable structure formed from a polymeric material.
US Referenced Citations (6)
Number Name Date Kind
4075465 Funk et al. Feb 1978 A
4555600 Morse Nov 1985 A
4621373 Hodsdon Nov 1986 A
5219067 Lima et al. Jun 1993 A
6172620 Brick et al. Jan 2001 B1
6180895 Hutchinson et al. Jan 2001 B1