KEY STRUCTURE FOR KEYBOARD

Abstract

A key structure may include a lower shell inserted into an insertion opening, where an annular stopper protrudes from the lower shell, which may include transparent grooves arranged on opposite inner sides of the annular stopper, the annular stopper may be formed with elastic arms on outer sides of the grooves, clamping hooks engaged with the top plate extend downwardly from the elastic arms, the annular stopper, and the annular stopper and a top plate stop and locate each other. The key structure may include an upper shell above the lower shell, that may include a through opening. The key structure may include a pressing shaft movably disposed between the lower shell and the upper shell, where a top end of the pressing shaft penetrates the through insertion opening. Moreover, the key structure may include a spring disposed and elastically supported between the lower shell and the pressing shaft.

Claims

1. A key structure for a keyboard, the keyboard having a top plate, and the top plate being provided with an insertion opening, the key structure comprising: a lower shell inserted into the insertion opening, wherein an annular stopper protrudes from the lower shell and the lower shell comprises two transparent grooves arranged on two opposite inner sides of the annular stopper, the annular stopper is formed with two elastic arms on outer sides of the two transparent grooves, two clamping hooks engaged with the top plate extend downwardly from the two elastic arms, the annular stopper is exposed on the top plate, and the annular stopper and the top plate stop and locate each other; an upper shell assembled above the lower shell, wherein the upper shell comprises a through opening; a pressing shaft movably disposed between the lower shell and the upper shell, wherein a top end of the pressing shaft penetrates the insertion opening; and a spring disposed and elastically supported between the lower shell and the pressing shaft.

2. The key structure for the keyboard according to claim 1, wherein the lower shell comprises a bottom wall and an annular peripheral wall surrounding a peripheral edge of the bottom wall, and the annular stopper extends outwardly from the top of an outer peripheral edge of the annular peripheral wall.

3. The key structure for the keyboard according to claim 2, wherein the two transparent grooves are provided on two opposite side walls of the annular peripheral wall.

4. The key structure for the keyboard according to claim 2, wherein the annular stopper and the annular peripheral wall each have a square shape, the annular stopper comprises a pair of first opposite sides and a pair of second opposite sides, and the two clamping hooks are formed at the bottom of the pair of first opposite sides.

5. The key structure for the keyboard according to claim 4, wherein the second opposite sides are provided with two clamping slots, two clamping blocks provided inside the clamping slots extend from the annular stopper, two undercut hooks extend from the upper shell, and the undercut hooks are engaged with the clamping slots and are mutually latched with the clamping blocks.

6. The key structure for the keyboard according to claim 5, wherein a ring protrusion extends from an outer peripheral edge of the upper shell, and the two undercut hooks are molded by extending downwardly from two sides of the bottom of the ring protrusion.

7. The key structure for the keyboard according to claim 6, wherein an outer peripheral edge of the ring protrusion is inwardly provided with two notches located above the two undercut hooks, two protrusions protruding from the top of the annular stopper extend upwardly from the two clamping blocks, and the protrusions are embedded into the notches, so that the ring protrusion and the two protrusions together form an annular outer peripheral wall.

8. The key structure for the keyboard according to claim 2, wherein a protruding column extends upwardly from the bottom wall, and the spring comprises a coil spring sleeved on the protruding column.

9. The key structure for the keyboard according to claim 1, wherein the upper shell comprises a transparent plastic material, two light guide columns extend from the upper shell, and the light guide columns are accommodated in the transparent grooves and can be slidably moved therein.

10. The key structure for the keyboard according to claim 1, wherein the key structure further comprises a cap, and the cap is assembled on the top of the pressing shaft and follows the pressing shaft to rise or fall.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG. 1 is a perspective exploded view of a key structure.

[0019] FIG. 2 is a perspective schematic view of a lower shell.

[0020] FIG. 3 is a perspective assembly view of the key structure.

[0021] FIG. 4 is a cross-sectional assembly view of the key structure.

[0022] FIG. 5 is a perspective view of the key structure in a use state.

[0023] FIG. 6 is a perspective view of the key structure in another use state.

[0024] FIG. 7 is a cross-sectional view of the key structure in a use state.

[0025] FIG. 8 is a cross-sectional view of the key structure in another use state.

[0026] In the figures:

[0027] 10: key structure; 1: lower shell; 11: annular stopper; 111: elastic arm; 112: clamping hook; 113: clamping slot; 114: clamping block; 115: protrusion; 12: transparent groove; 13: bottom wall; 131: protruding column; 14: annular peripheral wall; 2: upper shell; 21: through opening; 22: ring protrusion; 221: undercut hook; 222: notch; 23: light guide column; 3: pressing shaft; 4: spring; 5: cap; 100: keyboard; 101: top plate; 102: insertion opening.

DETAILED DESCRIPTION

[0028] The detailed description and technical content of embodiments of the present invention will be described below in conjunction with the accompanying drawings. However, the accompanying drawings are only for illustrative purposes and are not used to limit the present invention.

[0029] Referring to FIGS. 1 to 8, embodiments provide a key structure for a keyboard. This key structure 10 mainly comprises a lower shell 1, an upper shell 2, a pressing shaft 3, and a spring 4.

[0030] As shown in FIGS. 5 to 6, the key structure 10 of the present invention may be used for a keyboard base 100. The keyboard 100 has a top plate 101, and the top plate 101 is provided with one or more insertion openings 102.

[0031] As shown in FIGS. 1 to 8, the lower shell 1 is inserted into the insertion opening 102. An annular stopper 11 protrudes from the outside of the lower shell 1, and the lower shell 1 is further provided with two transparent grooves 12 arranged on two opposite inner sides of the annular stopper 11. The annular stopper 11 is formed with two elastic arms 111 on outer sides of the two transparent grooves 12. Two clamping hooks 112 engaged with the top plate 101 extend downwardly from the bottom of the two elastic arms 111. The annular stopper 11 is exposed on the top plate 101, and the annular stopper 11 and the top plate 101 stop and locate each other.

[0032] The lower shell 1 has a bottom wall 13 and an annular peripheral wall 14 surrounding a peripheral edge of the bottom wall 13. The annular stopper 11 is molded by extending outwardly from the top of an outer peripheral edge of the annular peripheral wall 14. Two transparent grooves 12 are provided on two opposite side walls of the annular peripheral wall 14. A protruding column 131 extends upwardly from the bottom wall 13.

[0033] In addition, the annular stopper 11 and the annular peripheral wall 14 each have a square shape. The annular stopper 11 has a pair of first opposite sides and a pair of second opposite sides. The two clamping hooks 112 are formed at the bottom of this pair of first opposite sides. The second opposite sides are provided with two clamping slots 113. Two clamping blocks 114 provided inside the clamping slots 113 extend from the annular stopper 11, and two protrusions 115 protruding from the top of the annular stopper 11 extend upwardly from the two clamping blocks 114.

[0034] As shown in FIGS. 1 and 3 to 8, the upper shell 2 is assembled above the lower shell 1. The upper shell 2 is provided with a through opening 21, and two undercut hooks 221 extend from the upper shell 2. The undercut hooks 221 are engaged with the clamping slots 113, and are mutually latched with the clamping blocks 114.

[0035] A ring protrusion 22 extends from an outer peripheral edge of the upper shell 2. The two undercut hooks 221 are molded by extending downwardly from two sides of the bottom of the ring protrusion 22, and two notches 222 located above the two undercut hooks 221 are inwardly provided on an outer peripheral edge of the ring protrusions 22. The protrusions 115 are embedded into the notches 222, so that the ring protrusion 22 and the two protrusions 115 together form an annular outer peripheral wall.

[0036] In addition, the upper shell 2 is made of a transparent plastic material. Two light guide columns 23 extend from the upper shell 2. The light guide columns 23 are accommodated in the transparent grooves 12 and can be slidably moved therein. The light guide columns 23 are arranged to be opposite to a light-emitting source (not shown in the figures) installed on the keyboard 100, so as to guide the light from the light-emitting source to the upper shell 2.

[0037] As shown in FIGS. 1 and 3 to 8, the pressing shaft 3 is movably sandwiched between the lower shell 1 and the upper shell 2, and a top end of the pressing shaft 3 penetrates the through opening 21.

[0038] As shown in FIGS. 1, 4 and 7 to 8, the spring 4 is sandwiched and elastically supported between the lower shell 1 and the pressing shaft 3. The spring 4 of this embodiment is a coil spring and is sleeved on the protruding column 131, but it is not limited thereto.

[0039] As shown in FIGS. 5 to 8, the key structure 10 of the present invention further comprises a cap 5. The cap 5 is assembled on the top of the pressing shaft 3, and the cap 5 follows the pressing shaft 3 to rise or fall.

[0040] As shown in FIGS. 5 to 8, in the use states of the key structure 10 of this embodiment, the lower shell 1 is provided with the two transparent grooves 12 that are arranged on two opposite inner sides of the annular stopper 11, and the two clamping hooks 112 engaged with the top plate 101 extend from the two elastic arms 111. As a result, the outer peripheral wall of the annular stopper 11 does not need to be provided with a concave-convex structure, so that the lower shell 1 can be firmly assembled on the top plate 101. Therefore, compared with the outer peripheral wall of the stopper of the known lower shell presenting unevenness, the outer peripheral wall of the annular stopper 11 is not provided with a concave-convex structure, so that the annular stopper 11 presents the form of an annular outer peripheral wall, thereby improving the appearance and aesthetics of the key structure 10.

[0041] Further, two protrusions 115 extend from the annular stopper 11, and two notches 222 located above the two undercut hooks 221 are inwardly provided on an outer peripheral edge of the ring protrusion 22. The protrusions 115 are engaged with the notches 222, so that the ring protrusion 22 and the two protrusions 115 together present the form of an annular outer peripheral wall, thereby enhancing the appearance and aesthetics of the key structure 10.

[0042] In summary, the key structure for the keyboard can indeed achieve the intended purpose of use and solves the defects of the prior art, and has industrial applicability. Moreover, the embodiments described above are only preferred embodiments for sufficiently explaining the disclosed embodiments, and the scope of protection is not limited thereto. The equivalent substitutions or transformations made by a person skilled in the art on the basis of the present disclosure are all within the scope of protection of the present invention.