Stack key structure and balance-shaft seat thereof

Patent metadata

Field	Value
Publication number	US-12586740-B2
Application number	US-202218559612-A
Country	US
Kind code	B2
Filing date	May 4, 2022
Priority date	May 10, 2021
Publication date	Mar 24, 2026
Grant date	Mar 24, 2026

Abstract

A key structure may include a switch shaft sleeve seat and a switch shaft accommodated in the switch shaft sleeve seat, where an end of the switch shaft penetrates the switch shaft sleeve seat and is movable relative to the switch shaft sleeve seat; two balance shaft sleeve seats on sides of the switch shaft sleeve seat, where each of the balance shaft sleeve seats may include a sleeve body and a top of each sleeve body may include a through hole. Moreover, the key structure may include two balance shafts respectively accommodated disposed in the sleeve bodies, where top ends of the balance shafts penetrate the through holes. Also, the key structure may include a key cap arranged above the switch shaft sleeve seat and the two balance shaft sleeve seats and fixedly connected to the switch shaft and the two balance shafts.

First claim

The invention claimed is:

1 . A key structure, comprising:
a switch shaft sleeve seat; a switch shaft accommodated in the switch shaft sleeve seat, wherein a top end of the switch shaft penetrates a top of the switch shaft sleeve seat and is movable relative to the switch shaft sleeve seat; two balance shaft sleeve seats arranged on two sides of the switch shaft sleeve seat, wherein each of the balance shaft sleeve seats comprises a sleeve body, a side of each of the sleeve bodies comprises an adjacent side edge arranged adjacent to the switch shaft sleeve seat, and a top of each of the sleeve bodies comprises a through hole located in the middle of the adjacent side edge, each of the through holes defines a central axis and a minor axis plane and a major axis plane intersecting at the central axis, wherein the minor axis planes are arranged perpendicular to the adjacent side edges, the major axis planes are arranged perpendicular to the minor axis planes, and an appearance of each of the sleeve bodies is symmetrically set with the minor axis plane as a reference and asymmetrically set with the major axis plane as a reference; two balance shafts respectively disposed in the sleeve bodies, wherein top ends of the balance shafts penetrate the through holes; and a key cap arranged above the switch shaft sleeve seat and the two balance shaft sleeve seats and fixedly connected to the switch shaft and the two balance shafts.

2 . The key structure according to claim 1 , wherein the key structure further comprises a fixing plate, the switch shaft sleeve seat and the sleeve bodies are connected to the fixing plate in a penetrating manner, an annular stopper extends from each of the sleeve bodies, and the annular stoppers are arranged below the fixing plate and are stopped and limited by the fixing plate.

3 . The key structure according to claim 2 , wherein each of the sleeve bodies comprises two transverse side walls and a longitudinal side wall connected on a side of the two transverse side walls, and is provided with a transparent indentation formed on an other side of the two transverse side walls, and each of the two transverse side walls are symmetrically set with the minor axis planes as a reference.

4 . The key structure according to claim 3 , wherein each of the annular stoppers comprises two transverse sections and a first longitudinal section and a second longitudinal section connected on two sides of the two transverse sections, an interval space is formed between the transverse sections and the transverse side walls, each of the two transverse sections are symmetrically set with the minor axis planes as a reference, the first longitudinal sections are molded by extending integrally with the longitudinal side walls, and the second longitudinal sections are arranged corresponding to the transparent indentations and are molded by extending integrally with each two transverse side walls.

5 . The key structure according to claim 4 , wherein the key structure further comprises a balance rod, a top of each of the second longitudinal sections is recessed with two concave furrows that are symmetrically set with the minor axis planes as a reference, each of the two transverse side walls are provided with two penetrating holes that are symmetrically set with the minor axis planes as a reference, and the balance rod penetrates one of each two concave furrows and one of each two penetrating holes, and is pivotally connected to the two balance shafts at two ends.

6 . The key structure according to claim 5 , wherein the balance rod comprises a transverse rod and two longitudinal rods extending from two ends of the transverse rod, and two ends of the transverse rod each penetrate one of each two concave furrows, and the longitudinal rods each penetrate one of each two penetrating holes.

7 . The key structure according to claim 4 , wherein an embedding groove is provided on an outer side of each of the second longitudinal sections, the embedding grooves comprise a shape that is symmetrically set with the minor axis planes as a reference, two clamping hooks embedded into the embedding grooves extend from two sides of the switch shaft sleeve seat, and the two clamping hooks are arranged below the fixing plate and are stopped and limited by the fixing plate.

8 . The key structure according to claim 3 , wherein two first protrusions that are symmetrically set with the minor axis planes as a reference extend from inner sides of each two transverse side walls, two second protrusions extend from two sides of the balance shafts, and the second protrusions are arranged below the first protrusions and are stopped and limited by the first protrusions.

9 . The key structure according to claim 3 , wherein two inclined protruding pieces that are symmetrically set with the minor axis planes as a reference extend from outer sides of each two transverse side walls, each two inclined protruding pieces gradually increase in distance toward the annular stoppers, and each two inclined protruding pieces are arranged above the fixing plate and are stopped and limited by the fixing plate.

10 . A balance shaft sleeve seat of a key structure, wherein the key structure has a switch shaft sleeve seat, and the balance shaft sleeve seat comprises:
a sleeve body, a side of which has an adjacent side edge arranged adjacent to the switch shaft sleeve seat, and a top of which is provided with a through hole located in a middle portion of the adjacent side edge, wherein the through hole defines a central axis and a minor axis plane and a major axis plane intersecting at the central axis, the minor axis plane is arranged perpendicular to the adjacent side edge, the major axis plane is arranged perpendicular to the minor axis plane, and an appearance of the sleeve body is symmetrically set with the minor axis plane as a reference and asymmetrically set with the major axis plane as a reference.

11 . The balance shaft sleeve seat of the key structure according to claim 10 , wherein the sleeve body comprises two transverse side walls and a longitudinal side wall connected on a side of the two transverse side walls, and is provided with a transparent indentation formed on an other side of the two transverse side walls, and the two transverse side walls are symmetrically set with the minor axis plane as a reference.

12 . The balance shaft sleeve seat of the key structure according to claim 11 , wherein an annular stopper extends from the sleeve body, the annular stopper comprises two transverse sections and a first longitudinal section and a second longitudinal section connected on two sides of the two transverse sections, an interval space is formed between the transverse sections and the transverse side walls, the two transverse sections are symmetrically set with the minor axis plane as a reference, the first longitudinal section is integrally extended and molded with the longitudinal side wall, and the second longitudinal section is arranged corresponding to the transparent indentation and is integrally extended and molded with the two transverse side walls.

13 . The balance shaft sleeve seat of the key structure according to claim 12 , wherein a top of the second longitudinal section is recessed with two concave furrows that are symmetrically set with the minor axis plane as a reference, the two transverse side walls are provided with two penetrating holes that are symmetrically set with the minor axis plane as a reference, an embedding groove is provided on an outer side of the second longitudinal section, and a shape of the embedding groove is symmetrically set with the minor axis plane as a refer

Assignees

• Voyetra Turtle Beach Inc

Inventors

• Wang Wei Chuan

Classifications

• H01H13/14

  Operating parts, e.g. push-button · CPC title

• H01H2217/004

  Larger or different actuating area · CPC title

• H01H13/705

  characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys · CPC title

• H01H2221/026

  Guiding or lubricating nylon · CPC title

• H01H3/06

  Means for securing to shaft of driving mechanism · CPC title