Harsh environment key panel and bezel structures
11558973 · 2023-01-17
Assignee
Inventors
- Clint L. Gosch (Cedar Rapids, IA, US)
- Matthew W. Ahrens (Marion, IA, US)
- Brandon J. Cormier (Marion, IA, US)
Cpc classification
G06F1/1671
PHYSICS
G06F1/1601
PHYSICS
G06F3/0202
PHYSICS
H01H13/063
ELECTRICITY
G06F1/182
PHYSICS
H01H13/06
ELECTRICITY
H05K5/061
ELECTRICITY
H01H13/83
ELECTRICITY
G06F1/1637
PHYSICS
International classification
H01H13/83
ELECTRICITY
H01H13/06
ELECTRICITY
Abstract
Harsh environment key panel and bezel structures for a user interface device are disclosed. In embodiments, a user interface device includes a printed board, a switch mounted to the printed board, and a key panel disposed upon the printed board. The key panel includes a plurality of printed device layers forming a bezel, a button configured to actuate the switch, and a deformable interface between the bezel and the button. The plurality of printed device layers can include at least one continuous printed device layer that forms portions of the bezel, the button, and the deformable interface. The continuous printed device layer may include at least one rigid device material that forms a portion of the bezel and a portion of the button and a deformable device material that forms a portion of the deformable interface between the bezel and the button.
Claims
1. A user interface device, comprising: a touchscreen display; a bezel surrounding at least a portion of the touchscreen display; a gasket interfacing between the touchscreen display and the bezel; a plurality of printed device layers that form a hand stabilizer disposed upon the bezel, the plurality of printed device layers including a continuous printed device layer that includes a first rigid device material that forms an outer portion of the hand stabilizer and a second rigid device material that forms a portion of a light guide embedded within the hand stabilizer, wherein the second rigid device material is transparent or translucent; and a printed board with a light source mounted to the printed board, the light source configured to direct illumination through the light guide embedded within the hand stabilizer; wherein the plurality of printed device layers further includes a discontinuous printed device layer that forms portions of the bezel and a cavity, the cavity configured to receive the light source; wherein the discontinuous printed device layer is formed from at least one rigid-when-cured device material.
2. The user interface device of claim 1, wherein the plurality of printed device layers also forms at least a portion of the bezel.
3. The user interface device of claim 1, wherein the bezel includes a recess configured to receive at least a portion of the hand stabilizer, wherein the hand stabilizer is at least partially embedded within the bezel.
4. The user interface device of claim 1, wherein the first rigid device material is opaque.
5. The user interface device of claim 1, wherein the gasket is formed at least in part by the plurality of printed device layers.
6. The user interface device of claim 1, wherein the gasket is formed at least in part by a deformable-when-cured device material.
7. The user interface device of claim 1, wherein the printed board comprises at least one of a printed wiring board or a printed circuit board.
8. The user interface device of claim 1, wherein the discontinuous printed device layer is supported by a support material during deposition of additional printed device layers on the discontinuous printed device layer.
9. The user interface device of claim 1, wherein the cavity is formed following the support material being removed by a solvent.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) Implementations of the inventive concepts disclosed herein may be better understood when consideration is given to the following detailed description thereof. Such description makes reference to the included drawings, which are not necessarily to scale, and in which some features may be exaggerated and some features may be omitted or may be represented schematically in the interest of clarity. Like reference numerals in the drawings may represent and refer to the same or similar element, feature, or function. In the drawings:
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DETAILED DESCRIPTION
(19) Before explaining at least one embodiment of the inventive concepts disclosed herein in detail, it is to be understood that the inventive concepts are not limited in their application to the details of construction and the arrangement of the components or steps or methodologies set forth in the following description or illustrated in the drawings. In the following detailed description of embodiments of the instant inventive concepts, numerous specific details are set forth in order to provide a more thorough understanding of the inventive concepts. However, it will be apparent to one of ordinary skill in the art having the benefit of the instant disclosure that the inventive concepts disclosed herein may be practiced without these specific details. In other instances, well-known features may not be described in detail to avoid unnecessarily complicating the instant disclosure. The inventive concepts disclosed herein are capable of other embodiments or of being practiced or carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein is for the purpose of description and should not be regarded as limiting.
(20) As used herein a letter following a reference numeral is intended to reference an embodiment of the feature or element that may be similar, but not necessarily identical, to a previously described element or feature bearing the same reference numeral (e.g., 1, 1a, 1b). Such shorthand notations are used for purposes of convenience only, and should not be construed to limit the inventive concepts disclosed herein in any way unless expressly stated to the contrary.
(21) Further, unless expressly stated to the contrary, “or” refers to an inclusive or and not to an exclusive or. For example, a condition A or B is satisfied by any one of the following: A is true (or present) and B is false (or not present), A is false (or not present) and B is true (or present), and both A and B are true (or present).
(22) In addition, use of the “a” or “an” are employed to describe elements and components of embodiments of the instant inventive concepts. This is done merely for convenience and to give a general sense of the inventive concepts, and “a’ and “an” are intended to include one or at least one and the singular also includes the plural unless it is obvious that it is meant otherwise.
(23) Finally, as used herein any reference to “one embodiment,” or “some embodiments” means that a particular element, feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the inventive concepts disclosed herein. The appearances of the phrase “in some embodiments” in various places in the specification are not necessarily all referring to the same embodiment, and embodiments of the inventive concepts disclosed may include one or more of the features expressly described or inherently present herein, or any combination of or sub-combination of two or more such features, along with any other features which may not necessarily be expressly described or inherently present in the instant disclosure.
(24) Broadly, embodiments of the inventive concepts disclosed herein are directed to harsh environment key panel and bezel structures and techniques for manufacturing the same. The traditional approaches for making harsh environment key panel and bezel structures have worked well for various applications, but improvements in additive manufacturing (e.g., 3D printing) technology have opened up new possibilities for creating more robust user interface devices. In embodiments of this disclosure, a key panel is formed as a continuous 3D printed structure so that moisture and debris (e.g., sand, dust, chemical debris, caustic gas, etc.) cannot penetrate the key panel to cause errant behavior or damage to the key panel switches and other underlying components or circuitry. 3D printing technology can produce assemblies using multiple materials and/or multiple durometers in the same print. The material properties can range from a hard plastic to a soft rubber while printing in a high enough resolution to produce a usable surface finish. Furthermore, different colors and material transparencies can be selected. Consequently, forming key panels with 3D printing technology allows for harsh environment key panels and user interface devices to be made in an affordable manner with less process constraints than traditional techniques for making harsh environment key panels. This is because the buttons, the bezel, and the deformable interface materials that keep out moisture and debris can all be printed together rather than having to be individually manufactured and then assembled.
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(26) Example embodiments of a harsh environment key panel 200 are illustrated in
(27) The key panel 200 includes a plurality of printed device layers (e.g., 3D printed device layers) that form a bezel 202, at least one button 204, and a deformable interface 206 between the bezel 202 and the button 204. The button 204, when pressed, is configured to actuate (e.g., depress) the switch 210. Typically, push-button events are when a key panel is most vulnerable to moisture or debris entering the switch cavity. For example, in some key panels, a push-button event may displace the gasket material around a button and temporarily break the seal between the button and the bezel as a result. The deformable interface 206 is configured to prevent moisture or debris from entering the switch cavity 220 of the key panel 200. The deformable interface 206 is formed from at least one continuous printed device layer 214 that also forms portions of the bezel 202 and the button 204. Thus, the continuous printed device layer 214, as a whole, prevents moisture or debris from entering the cavity 220. For example, the deformable interface 206 (i.e., a portion of the continuous printed device layer 214) flexes or otherwise deforms so that the button 204 can be pressed to trigger the switch 210, but the seal between the bezel 202 and the button 204 is never broken.
(28) In embodiments, the continuous printed device layer 214 includes at least one rigid device material that forms a portion of the bezel 202 and a portion of the button 204, and the continuous printed device layer 214 further includes a deformable device material that forms at least a portion of the deformable interface 206 between the bezel 202 and the button 204. The key panel 200 may include a plurality of continuous device layers. The printed device layers of the key panel 200 further include a plurality of discontinuous device layers. For example, the key panel 200 includes at least one discontinuous printed device layer 216 that forms portions of the bezel 202, the button 204, and an airgap 218 between the bezel 202 and the button 204. The plurality of discontinuous printed device layers also forms portions of the bezel 202 that define the switch cavity 220 and portions of the button 204 that protrude from the bezel 202.
(29) The switch cavity 220 is configured to receive the switch 210 so that the switch 210 is at least partially disposed within the switch cavity 220 and is adjacent to (e.g., positioned right below and/or against) the button 204. For example, the printed board 208 can be fully or partially disposed within the switch cavity 220 or disposed adjacent to the switch cavity 220. In embodiments, the printed board 208 may be adhered or otherwise mounted to the bezel 202 so that the printed board 208 is at least partially disposed within the within the switch cavity 220 or secured to the bezel 202 at a fixed position that is adjacent to the switch cavity 220.
(30) The discontinuous printed device layers 216 may include the same rigid material or materials as the continuous printed device layers 214 that form portions of the bezel 202 and/or button 204. In embodiments, the portions of the switch cavity 220 and/or air gap 218 that are defined by a discontinuous printed device layer 216 may be formed by printing a support material in a temporarily continuous layer with the rigid and/or deformable device materials. The support material can then be removed after the rigid and deformable materials are cured (e.g., dried and/or hardened) to produce the discontinuous printed device layer 216 including portions of the bezel 202 and/or button 204 and defining portions of the switch cavity 220 and/or air gap 218.
(31) In some embodiments, the bezel 202 and button 204 portions of one or more printed device layers (e.g., continuous printed device layers 214 or discontinuous printed device layers 216) include a plurality of rigid device materials. For example, the bezel 202 portions may include a first rigid device material and the button 204 portions may include a second rigid device material. In other embodiments, the bezel 202 and the button 204 are formed from the same rigid device material. In some embodiments, the bezel 202 portion can include multiple rigid device materials, and/or the button 204 portions can include multiple rigid device materials.
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(33) In another example embodiment (
(34) In some embodiments, the second rigid device material (e.g., a transparent or translucent device material) forms a light guide 222 embedded within the button 204 and a light guide 232 embedded within the bezel 202. The deformable material that forms the deformable interface 206 may also be a transparent or translucent device material. For example, the deformable interface 206 may be configured to light up the air gap 218 between the bezel 202 and the button 204. The deformable interface 206 can also be configured to optically couple the light guide 222 embedded within the button 204 and the light guide 232 embedded within the bezel 202. In some embodiments, a shared light source (e.g., light source 226) can be configured to direct illumination into any of light guide 222, light guide 232, or the deformable interface 206 to illuminate both of the light guides 222 and 232 and the deformable interface 206 and/or indicia (e.g., indicia 224 and/or 234) on a top surface of the button 204 and/or bezel 202.
(35) In embodiments, the key panel 200 is adjacent to a display 104. For example, the user interface device 102 can include a display 104 that is at least partially surrounded by the bezel 202. The bezel 202 may be mounted (e.g., adhered or otherwise coupled) to the display 104, or to a device that supports the display 104, with a gasket 212 disposed between the display 104 and the bezel 202. In some embodiments, the gasket 212 is formed by the plurality of printed device layers. For example, at least one of the printed device layers that form that key panel 200 can include rigid device material that forms a portion of the bezel 202 and deformable device material that forms a portion of the gasket 212. In other embodiments, the gasket 212 is separate from the bezel 202 and may be adhered or otherwise coupled to the bezel 202.
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(37) The plurality of printed device layers 302 include a plurality of printed device materials. For example, the printed device layers 302 include one or more continuous printed device layers 322 that include a first rigid device material (e.g., an opaque device material) that forms outer portions of the bezel 304 and the hand stabilizer 306 and a second rigid device material (e.g., a transparent or translucent device material) that forms a portion of a light guide 316 embedded within the bezel 304 and the hand stabilizer 306. The light guide 316 may be configured to receive illumination from a light source 314 (e.g., a light-emitting diode (LED)) that is mounted to a printed board 312. For example, the light source 314 may be configured to direct illumination into the light guide 316 in order to illuminate at least a portion of the hand stabilizer 306 and/or indicia 318 (e.g., a pattern, symbol, character, etc.) on a planar surface of the hand stabilizer 306.
(38) The printed device layers 302 further include a plurality of discontinuous devices layers. For example, the printed device layers 302 include at least one discontinuous printed device layer 320 that forms portions of the bezel 304 and defines portions of a cavity 324 for the light source 314. In some embodiments, the bezel 304 is mounted (e.g., adhered or fastened) to the printed board 312 so that moisture and debris cannot enter the cavity 324. For example, the bezel 304 and the printed board 312 may have a gasket material or other seal disposed between them to prevent moisture and debris from entering the cavity 324. In other embodiments the printed board 312 forms a portion of the bezel 304 structure. For example, the printed board 312 can be formed from one or more printed device layers that make up portions of the bezel 304.
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(40) In embodiments, the touchscreen display 420 is at least partially surrounded by the bezel 402. The bezel 402 may be mounted (e.g., adhered or otherwise coupled) to the touchscreen display 420, or to a device that supports the touchscreen display 420, with a gasket 418 disposed between the touchscreen display 420 and the bezel 402. The gasket 418 may be adhered or otherwise coupled to the bezel 402. The bezel 402 can also include a cavity 412 for a light source 416 (e.g., a LED) that can be at least partially disposed within the cavity 412. The bezel 402 may further include a light path 422 (e.g., an airway or light guide) defined or embedded within the bezel 402 so that the light source 416 can direct light along the light path 422 towards the hand stabilizer 404. The light source 416 may be mounted to a printed board 414 that is coupled to the bezel 402. For example, the bezel 402 can be mounted (e.g., adhered or fastened) to the printed board 414 so that moisture and debris cannot enter the cavity 412. In embodiments, the bezel 402 and the printed board 414 may have a gasket material or other seal disposed between them to prevent moisture and debris from entering the cavity 412.
(41) The plurality of printed device layers 406 include a plurality of printed device materials. For example, the printed device layers 406 include a plurality of continuous printed device layers that include a first rigid device material (e.g., an opaque device material) that forms outer portions of the hand stabilizer 404 and a second rigid device material (e.g., a transparent or translucent device material) that forms a portion of a light guide 408 embedded within the hand stabilizer 404. The light guide 408 may be configured to receive illumination from the light source 416. For example, the light source 416 may be configured to direct illumination into the light guide 408 in order to illuminate at least a portion of the hand stabilizer 404 and/or indicia 410 (e.g., a pattern, symbol, character, etc.) on a planar surface of the hand stabilizer 404.
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(44) The method 600 includes printing a plurality of device layers with a 3D printer (e.g., 3D printer 500) to form a bezel, a button configured to actuate a switch, and a deformable interface between the bezel and the button (block 602). For example,
(45) The process of printing the plurality of device layers to form the bezel 728, the button 730, and the deformable interface 732 (block 602) can include forming at least one discontinuous printed device layer that includes portions of the bezel 728 and the switch cavity 736 (block 604). For example,
(46) The process of printing the plurality of device layers to form the bezel 728, the button 730, and the deformable interface 732 (block 602) can also include forming at least one discontinuous printed device layer that includes portions of the bezel 728, the button 730, and an airgap 734 between the bezel 728 and the button 730 (block 606). For example,
(47) The process of printing the plurality of device layers to form the bezel 728, the button 730, and the deformable interface 732 (block 602) can also include forming a continuous printed device layer that includes portions of the bezel 728, the button 730, and the deformable interface 732 between the bezel 728 and the button 730 (block 608). For example,
(48) Any of the operations (e.g., blocks 604 through 608) described herein may be repeated any number of times during the process of printing the plurality of device layers to form the bezel 728, the button 730, and the deformable interface 732 (block 602). For example,
(49) After the printed device layers 702, 708, 716, and 724 are cured (e.g., dried and/or hardened), the key panel 700 may be exposed to (e.g., submerged within) a solvent (e.g., water, alcohol, acetone, limonene, or the like) to remove the support material (e.g., device material 706 and 712). Removing the support material produces discontinuous printed device layers 702 and 708 that form portions of the bezel 728 and the button 730 and also define the switch cavity 736 and the airgap 734 between the bezel 728 and the button 730. An example embodiment of the resulting key panel 700 is illustrated in
(50) The method 600 is described with respect to the key panel 700 illustrated in
(51) It is to be understood that embodiments of the methods according to the inventive concepts disclosed herein may include one or more of the steps described herein. Further, such steps may be carried out in any desired order and two or more of the steps may be carried out simultaneously with one another. Two or more of the steps disclosed herein may be combined in a single step, and in some embodiments, one or more of the steps may be carried out as two or more sub-steps. Further, other steps or sub-steps may be carried in addition to, or as substitutes to one or more of the steps disclosed herein.
(52) From the above description, it is clear that the inventive concepts disclosed herein are well adapted to carry out the objects and to attain the advantages mentioned herein as well as those inherent in the inventive concepts disclosed herein. While presently preferred embodiments of the inventive concepts disclosed herein have been described for purposes of this disclosure, it will be understood that numerous changes may be made which will readily suggest themselves to those skilled in the art and which are accomplished within the broad scope and coverage of the inventive concepts disclosed and claimed herein.