Keyswitch and keyboard thereof

Patent metadata

Field	Value
Publication number	US-2020294737-A1
Application number	US-202016814985-A
Country	US
Kind code	A1
Filing date	Mar 10, 2020
Priority date	Mar 15, 2019
Publication date	Sep 17, 2020
Grant date	—

Abstract

A keyswitch includes a bottom board, a cap structure, a lifting mechanism, and an elastic member. The lifting mechanism is detachably connected to the cap structure and the bottom board to make the cap structure movable upward and downward relative to the bottom board. The elastic member is connected to the cap structure so as to be detached from the lifting mechanism together with the cap structure when the cap structure is separate from the lifting mechanism.

First claim

What is claimed is:

1 . A keyswitch comprising:
a bottom board; a cap structure; a lifting mechanism detachably connected to the cap structure and the bottom board to make the cap structure movable upward and downward relative to the bottom board; and an elastic member connected to the cap structure to be detached from the lifting mechanism together with the cap structure when the cap structure is separate from the lifting mechanism.

2 . The keyswitch of claim 1 , wherein the elastic member is a spring or an elastic body with tactile feedback, and the elastic member is attached under the cap structure by glue.

3 . The keyswitch of claim 1 , wherein the lifting mechanism comprises two clamping slot structures and two shaft structures, the two clamping slot structures extend downward from the cap structure toward the bottom board, the two shaft structures protrude from the bottom board corresponding to the two clamping slot structures, and the two shaft structures are movably disposed in the two clamping slot structures to guide the cap structure to move upward and downward relative to the bottom board.

4 . The keyswitch of claim 1 , wherein two clamping slot structures extend from the cap structure toward the bottom board, the lifting mechanism comprises a first support member and a second support member, the first support member and the second support member pivotably intersect with each other and are slidably connected to the bottom board, the first support member and the second support member have a first shaft end portion and a second shaft end portion respectively, and the first shaft end portion and the second shaft end portion are detachably pivoted to the two clamping slot structures.

5 . The keyswitch of claim 1 , wherein the elastic member is a spring, the cap structure has at least one fixing hook, and the elastic member is engaged with the at least one fixing hook and is attached under the cap structure by glue.

6 . The keyswitch of claim 1 further comprising:
a plurality of connection sleeves formed sequentially with gradually decreasing diameters and telescopically connected to each other in a nested configuration, the connection sleeve having a maximum diameter being connected to the cap structure to make the plurality of connection sleeves surround the elastic member; and
a cover sleeve jacketing the elastic member, the cover sleeve being telescopically disposed through the connection sleeve having a minimum diameter to form a telescopic sleeve structure cooperatively with the plurality of connection sleeves, the telescopic sleeve structure abutting against the bottom board and containing the elastic member.

7 . The keyswitch of claim 6 , wherein at least one rib protrudes outwardly from a periphery of the connection sleeve having the maximum diameter, and the keyswitch further comprises:
a fixing ring jacketing the connection sleeve having the maximum diameter, the fixing ring being connected to the cap structure and having a fixing slot formed thereon corresponding to the at least one rib, the fixing slot being engaged with the at least one rib to fix the connection sleeve having the maximum diameter to the cap structure.

8 . The keyswitch of claim 1 , wherein the lifting mechanism comprises a plunger and a hollow pillar, the plunger extends from the cap structure toward the bottom board, the hollow pillar protrudes from the bottom board corresponding to the plunger, the elastic member jackets the plunger, and the plunger is movably disposed through the hollow pillar to make the elastic member abut against the hollow pillar for driving the cap structure away from the bottom board.

9 . The keyswitch of claim 1 further comprising:
a distance sensor disposed on the bottom board for detecting a velocity of the cap structure relative to the bottom board.

10 . The keyswitch of claim 1 , wherein the elastic member is a spring, the cap structure has at least one fixing hook, the elastic member is engaged with the at least one fixing hook and abuts against the bottom board for driving the cap structure away from the bottom board, and the keyswitch further comprises:
a connection ring detachably engaged with the at least one fixing hook to clamp the spring cooperatively with the cap structure.

11 . The keyswitch of claim 10 , wherein the keyswitch further comprises a replaceable cap structure and an elastic body with tactile feedback, an end of the elastic body with tactile feedback is connected to the replaceable cap structure, and the replaceable cap structure is detachably connected to the lifting mechanism to abut the other end of the elastic body with tactile feedback against the bottom board for driving the replaceable cap structure away from the bottom board when the spring is detached from the lifting mechanism together with the cap structure.

12 . The keyswitch of claim 11 , wherein the replaceable cap structure comprises a connection member and a cap body, the connection member is detachably disposed under the cap body and detachably connected to the lifting mechanism, a hole is formed on the connection member corresponding to the elastic body with tactile feedback, and the end of the elastic body with tactile feedback is connected to the cap body corresponding to the hole.

13 . The keyswitch of claim 12 , wherein the connection member has a first magnetic member, the cap body has a second magnetic member corresponding to the first magnetic member, and the first magnetic member magnetically attracts the second magnetic member to make the connection member detachably connected to the cap body.

14 . The keyswitch of claim 13 , wherein a recessed structure is formed on a side of the cap body corresponding to the second magnetic member.

15 . The keyswitch of claim 12 , wherein at least one first positioning structure is formed on at least one edge of the connection member, a second positioning structure is formed on the cap body corresponding to the at least one first positioning structure, and the at least one first positioning structure is engaged with the second positioning structure to make the connection member detachably connected to the cap body.

16 . The keyswitch of claim 10 , wherein the cap structure comprises a connection member, a cap body, and a spring fixing base, the connection member is detachably disposed under the cap body and detachably connected to the lifting mechanism, a hole is formed on the connection member corresponding to the spring, the least one fixing hook is formed on the spring fixing base and connected to the cap body corresponding to hole, and the fixing ring is detachably engaged with the at least one fixing hook to clamp the spring cooperatively with the spring fixing base.

17 . The keyswitch of claim 16 , wherein the spring fixing base is attached under the cap body by glue.

18 . The keyswitch of claim 16 , wherein at least one limiting block is formed on the spring fixing base, and the at least one limiting block laterally abuts against the spring and is arranged in a ring shape cooperatively with the at least one fixing hook for positioning the spring to the spring fixing base.

19 . The keyswitch of claim 16 , wherein the connection member has a first magnetic member, the cap body has a second magnetic member corresponding to the first magnetic member, and the first magnetic member magnetically attracts the second magnetic member to make the connection member detachably connected to the cap body.

20 . The keyswitch of claim 19

Assignees

• Darfon Electronics Corp

Inventors

• Huang Jui-Yi
• Yang sheng-yun
• Lin Chin-Hung

Classifications

• H01H2235/018

  Spring seat · CPC title

• H01H2235/002

  Linear coil spring combined with dome spring · CPC title

• H01H2221/028

  Telescopic guiding · CPC title

• H01H13/84 Primary

  characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback (legends H01H13/83) · CPC title

• H01H3/125

  using a scissor mechanism as stabiliser · CPC title