Retractable keyboard keys

• US 9,490,087 B2
• Filed: 11/05/2015
• Issued: 11/08/2016
• Est. Priority Date: 04/19/2013
• Status: Active Grant

• Current Assignee: Synaptics Incorporated
• Original Assignee: Synaptics Incorporated
• Inventors: Weber, Chris, Krumpelman, Doug, Tan, Yeh-Cheng
• Primary Examiner(s): COLILLA, DANIEL JAMES
• Application Number:
  US14/934,022
• Publication Number:
  US 20160055990A1
• Time in Patent Office: 369 Days
• US Class Current: 1/1
• CPC Class Codes: G06F 1/1662 Details related to the integrated keyboard
• CPC Class Codes: G06F 1/1666 Arrangements for reducing the size of the integrated keyboard for transport, e.g. foldable keyboards, keyboards with collapsible keys G06F1/1664 takes precedence
• CPC Class Codes: G06F 3/0221 Arrangements for reducing keyboard size for transport or storage, e.g. foldable keyboards, keyboards with collapsible keys G06F3/0216 takes precedence; for keyboards integrated in a laptop computer G06F1/1666
• CPC Class Codes: H01H 13/14 Operating parts, e.g. push-button
• CPC Class Codes: H01H 13/7065 characterised by the mechanism between keys and layered keyboards
• CPC Class Codes: H01H 13/85 characterised by tactile feedback features
• CPC Class Codes: H01H 13/86 characterised by the casing, e.g. sealed casings or casings reducible in size
• CPC Class Codes: H01H 2221/036 Return force
• CPC Class Codes: H01H 2223/052 reductible in size, e.g. for transportation
• CPC Class Codes: H01H 2231/042 Briefcase; Note-book
• CPC Class Codes: H03K 17/9622 using a plurality of detectors, e.g. keyboard
• CPC Class Codes: H03K 17/975 using a capacitive movable element
• CPC Class Codes: H03K 2217/960755 Constructional details of capacitive touch and proximity switches

Abstract

A laptop computer comprising a keyboard including a bezel having a plurality of key openings and a plurality of key holding features configured adjacent to the plurality of key openings on a bottom side of the bezel. The laptop computer also includes a plurality of keycaps having a touch surface for receiving a press force, each keycap positioned within a respective one of the plurality of key openings. The laptop computer also includes a chassis having a plurality of planar-translation effecting mechanisms each supporting a respective one of the plurality of keycaps such that, in response to receiving the press force, the respective keycap moves in a press direction and a second direction orthogonal to the press direction from an unpressed position toward a pressed position.

Claims

1. A laptop computer comprising a keyboard, the keyboard comprising:

a bezel having a plurality of key openings and a plurality of key holding features configured adjacent to the plurality of key openings on a bottom side of the bezel;

a plurality of keycaps having a touch surface for receiving a press force, each keycap positioned within a respective one of the plurality of key openings;

a chassis having a plurality of planar-translation effecting mechanisms each supporting a respective one of the plurality of keycaps such that, in response to receiving the press force, the respective keycap moves in a press direction and a second direction orthogonal to the press direction from an unpressed position toward a pressed position; and

a key retraction mechanism configured to move the chassis relative to the bezel such that, in response to movement of the chassis relative to the bezel, the key holding features limit movement of the plurality of keycaps in the second direction and the plurality of keycaps moves in the press direction from the unpressed position toward a retracted position.

2. The laptop computer of claim 1, wherein:

each of the plurality of keycaps includes a first magnetic component;

the chassis includes a second magnetic component for each respective keycap of the plurality of keycaps; and

the first and second magnetic components form a ready-return mechanism that biases the respective keycap toward the unpressed position.

3. The laptop computer of claim 2, wherein one of the first and second magnetic components comprises a non-magnetized ferrous material.

4. The laptop computer of claim 1, further comprising a biasing mechanism coupled to the chassis and configured to bias the plurality of keycaps toward the retracted position.

5. The laptop computer of claim 4, wherein a magnitude of a biasing force provided by the biasing mechanism is greater than a magnetic force provided by a ready-return mechanism.

6. The laptop computer of claim 1, wherein each of the planar-translation effecting mechanisms comprise a four-bar mechanism between the chassis and each respective key-cap.

7. The laptop computer of claim 1, wherein the key retraction mechanism comprises one of a cam, an arm, a latch, a strap, a ribbon, and a motor.

8. The laptop computer of claim 1, wherein each of the planar-translation effecting mechanisms comprise ramp features on the chassis for each respective keycap and the plurality of keycaps include ramp contacting features that move along the ramp features as the respective keycap moves from the unpressed position toward the pressed position.

9. The laptop computer of claim 8, wherein the planar-translation effecting mechanism further comprises inverted ramp features on the chassis for each respective keycap and the plurality of keycaps include inverted ramp contacting features, the key holding features of the bezel hold the plurality of keycaps during movement to a retracted position.

10. The laptop computer of claim 9, wherein movement of the keycaps toward the retracted position comprises movement substantially in the press direction relative to the key holding features.

11. The laptop computer of claim 1, wherein each of the plurality of keycaps are substantially flush with a top surface of the bezel when the plurality of keycaps are in the retracted position.

12. The laptop computer of claim 1, further comprising a display coupled to the key retraction mechanism, wherein, in response to movement of the display toward the bezel, the key retraction mechanism moves the chassis relative the bezel thereby moving the plurality of keycaps to the retracted position.

13. The laptop computer of claim 12, wherein, in response to movement of the display away from the bezel, the key retraction mechanism moves the chassis relative to the bezel thereby moving the plurality of keycaps to the unpressed position.

14. The laptop computer of claim 1, further comprising a capacitive sensor configured to sense the position of each respective keycap from one of, the pressed position, the unpressed position, and the retracted position.

15. The laptop computer of claim 14, wherein the key retraction mechanism is configured to move the bezel relative to the chassis in response to a determination that the user is in proximity to the plurality of keycaps.

16. A keyboard, comprising:

a bezel having a plurality of key openings and a plurality of key holding features adjacent to the plurality of key openings;

a plurality of keycaps each positioned within one of the plurality of key openings and each keycap having a touch surface for receiving a press force from a user that moves the keycap from an unpressed position toward a pressed position, the unpressed position and pressed position separated in a vertical press direction and a second direction orthogonal to the vertical press direction;

a chassis having a plurality of planar-translation effecting mechanisms to guide the respective keycap in the vertical press direction and the second direction as the keycap moves from the unpressed position toward the pressed position; and

a key retraction mechanism configured to cause movement between the chassis and the bezel;

wherein the key holding features of the bezel are configured to limit movement of the keycaps in the second direction in response to movement of the chassis relative to the bezel.

17. The keyboard of claim 16, further comprising a biasing mechanism coupled to the chassis and configured to bias the plurality of keycaps toward the retracted position.

18. The keyboard of claim 17, wherein a magnitude of a biasing force provided by the biasing mechanism is greater than a magnetic force provided by a ready-return mechanism.

19. The keyboard of claim 16 further comprising a display coupled to the key retraction mechanism, wherein movement of the display toward the bezel causes the key retraction mechanism to move the chassis relative to the bezel thereby moving the plurality of keys to the retracted position.