Keycap lifting mechanism

Abstract

The utility model discloses a keycap lifting mechanism. The stability of supporting a keycap is improved through the structural design of a bracket. For example, the vertical projections of the sliding hole, the grabbing hole and the bottom hole on the bracket are overlapped in the short side direction. For example, the vertical projections of the sliding hole, the grabbing hole and the pivot hole on the bracket are overlapped in the short edge direction. For example, the bracket does not have a structure connected with other members within the coverage area of the dome hole jointly formed by the bracket in the long side direction. For example, in the coverage range of the supporting arms on the two sides of the dome hole in the long edge direction, the support is provided with more than eight connecting parts used for being connected with the key cap and the bottom plate. For example, the width of the supporting arms on the two sides of the dome hole is 0.8-2 times of the length of the supporting arms.

Description

TECHNICAL FIELD

[0001] The utility model relates to a key structure, especially to a key cap lifting mechanism of long rectangular key structure. BACKGROUND

[0002] With the miniaturization of the key structure, the space available for each component is greatly reduced, and the structural strength of the component is difficult to maintain, which causes the stability of the overall operation of the key structure to decline. For example, the stability of the transmission of the support and other components (such as another support, a key cap, or a bottom plate, etc.) declines, and the stability of the support supporting the key cap also declines. For another example, after using the key structure for a period of time or during the assembly of the support, the support may also produce some permanent deformation, which affects the stability of the operation, and even causes the key structure to be unable to use. SUMMARY

[0003] In view of the problems in the prior art, the purpose of the utility model is to provide a key cap lifting mechanism for a long rectangular key structure. The vertical projections of the sliding hole, the grabbing hole, and the bottom hole on the support overlap in the short side direction, which helps to increase the stability of the transmission of the support in the short side direction between the key cap and the bottom plate, and further improves the stability of the overall operation of the key structure.

[0004] According to the keycap lifting mechanism of the embodiment of the utility model, it is used for long rectangular key structure. The long rectangular key structure has long side direction and short side direction. The keycap lifting mechanism contains bottom plate, first support and second support. The bottom plate contains bottom hook. The first support contains bottom shaft, bottom hole formed on the side of the bottom shaft, sliding shaft and sliding hole formed on the side of the sliding shaft. The bottom shaft is rotatably clamped in the bottom hook, the bottom hook extends into the bottom hole, the first support is slidably and rotatably connected with the keycap of the long rectangular key structure through the sliding shaft. The second support and the first support are pivotally connected with each other around a pivot shaft, and the pivot shaft is parallel to the long side direction. The second support contains grabbing shaft and grabbing hole formed on the side of the grabbing shaft. The second support is rotatably connected with the keycap of the long rectangular key structure through the grabbing shaft. Wherein, the projection of the bottom hole, the sliding hole and the grabbing hole in a vertical direction overlaps each other in the short side direction. Therefore, the force of the keycap of the long rectangular key structure to the floor of the long rectangular key structure through the first support can be transmitted in a shorter path, the stability of force transmission can be increased, and the stability of supporting the keycap can be increased. Similarly, the force of the keycap to the bottom plate through the second support and the first support can also be transmitted in a shorter path, and the stability of force transmission can also be increased, and the stability of supporting the keycap can also be increased. In addition, the arrangement of the bottom hole, the sliding hole and the grabbing hole also helps to reduce the torque perpendicular to the long side direction generated by the force transmission to the first support and the second support, thereby reducing the structural torsion of the first support and the second support when transmitting the force. Therefore, the keycap lifting mechanism can improve the stability of the overall operation of the key structure.

[0005] As an optional technical solution, the first support contains a pivot hole, the second support contains a pivot shaft, the pivot shaft is inserted into the pivot hole to make the first support and the second support rotate relative to the pivot shaft, and the projection of the pivot hole, the sliding hole and the grabbing hole in the vertical direction overlaps each other in the short side direction.

[0006] Another purpose of the utility model is to provide a keycap lifting mechanism for long rectangular key structure. The vertical projection of the sliding hole, the grabbing hole and the pivot hole on the support of the keycap lifting mechanism overlaps in the short side direction, which helps to increase the stability of the force transmission between the supports in the short side direction from the keycap, thereby improving the stability of the overall operation of the key structure.

[0007] According to the keycap lifting mechanism of the embodiment of the utility model, for long rectangular key structure. The long rectangular key structure has long side direction and short side direction. The keycap lifting mechanism contains first support and second support. The first support contains pivot hole, sliding axle and sliding hole formed in the side of sliding axle. The first support is slidably and rotatably connected with the keycap of long rectangular key structure through sliding axle. The second support contains pivot axle, grab axle and grab hole formed in the side of grab axle. The second support is rotatably connected with the keycap of long rectangular key structure through grab axle. The pivot axle is inserted into the pivot hole to make the first support and the second support relatively rotate around a pivot axle, and the pivot axle is parallel to the long side direction. The projection of the pivot hole, the sliding hole and the grab hole in a vertical direction overlaps in the short side direction. Therefore, the first support can transfer force from the keycap of long rectangular key structure to the second support through a shorter path, which can increase the stability of force transmission and the stability of supporting the keycap. The second support is the same. In addition, the arrangement of the pivot hole, the sliding hole and the grab hole also helps to reduce the torque perpendicular to the long side direction generated by the force transmission to the first support and the second support, thereby reducing the structural torsion of the first support and the second support when transmitting force. Therefore, the keycap lifting mechanism can improve the stability of the overall operation of the key structure.

[0008] Another purpose of the utility model is to provide a keycap lifting mechanism for long rectangular key structure. The keycap lifting mechanism is covered in the long side direction by the dome hole formed by the supports together, and the supports do not have structures connected to other components. This helps to increase the structural strength of the supports in this coverage range, thereby improving the stability of the overall operation of the key structure.

[0009] According to the keycap lifting mechanism of the embodiment of the utility model, for long rectangular key structure. The long rectangular key structure has long side direction and short side direction. The keycap lifting mechanism contains first support and second support, and the second support is pivotally connected with the first support around a pivot axle. The first support and the second support form a dome hole together. Among them, the first support and the second support are defined as dome hole coverage range in the long side direction by the dome hole; the first support and the second support do not have structures connected to the keycap and bottom plate of the long rectangular key structure, the first support or the second support in the dome hole coverage range. Therefore, the structural strength of the first support and the second support in this dome hole coverage range can be maintained, thereby improving the stability of the overall operation of the key structure.

[0010] Another purpose of the utility model provides a key cap lifting mechanism for long rectangular key structure. The support of the key cap lifting mechanism defines a branch arm coverage range on both sides of the dome hole. The support has more than 8 connection parts for connecting the key cap and the bottom plate in the branch arm coverage range. This can increase the stable support of the key cap and the bottom plate in the branch arm coverage range, and further improve the stability of the overall operation of the key structure.

[0011] The key cap lifting mechanism according to an embodiment of the utility model is used for long rectangular key structure. The long rectangular key structure has a long side direction and a short side direction. The key cap lifting mechanism includes a first support and a second support, and the first support and the second support are pivotally connected around a pivot shaft. The first support includes a long arm, a first sub-branch arm and a second sub-branch arm. The long arm extends parallel to the long side direction, and the first sub-branch arm and the second sub-branch arm protrude and extend from the long arm non-parallel to the long side direction. The first sub-branch arm and the second sub-branch arm form a dome hole. Wherein, the first sub-branch arm and the second sub-branch arm are used as boundaries to define a branch arm coverage range in the long side direction for the first support and the second support; the first support includes a plurality of first connection parts in the branch arm coverage range. The first support is connected with the second support, the key cap and the bottom plate of the long rectangular key structure through the plurality of first connection parts. The second support includes a plurality of second connection parts in the branch arm coverage range. The second support is connected with the first support, the key cap and the bottom plate of the long rectangular key structure through the plurality of second connection parts. The number of the plurality of first connection parts and the plurality of second connection parts is greater than or equal to 8. Therefore, although the branch arm coverage range covers the dome hole, the first support and the second support have more than a certain number of connection parts in the branch arm coverage range. The key cap lifting mechanism can still provide stable support for the key cap and the bottom plate in the branch arm coverage range, and further improve the stability of the overall operation of the key structure.

[0012] Another purpose of the utility model provides a key cap lifting mechanism for a long rectangular key structure. The width of the branch arm on both sides of the dome hole of the key cap lifting mechanism is 0.8 to 2 times the length. This can increase the structural strength of the branch arm, and further improve the stability of the overall operation of the key structure.

[0013] According to the keycap lifting mechanism of the embodiment of the utility model, it is used for long rectangular key structure. The long rectangular key structure has long side direction and short side direction. The keycap lifting mechanism contains first support and second support, the first support and the second support are pivoted to each other around a pivot axis. The first support contains first long arm, first sub support arm and second sub support arm, the first long arm extends parallel to the long side direction. The first sub support arm and the second sub support arm protrude and extend from the first long arm non-parallel to the long side direction, a dome hole is formed between the first sub support arm and the second sub support arm. The first support contains second long arm, third sub support arm and fourth sub support arm. The second long arm extends parallel to the second long side direction, the third sub support arm and the fourth sub support arm protrude and extend from the second long arm non-parallel to the long side direction. Wherein, in the long side direction, the first sub support arm and the second sub support arm are located between the third sub support arm and the fourth sub support arm; each of the first to fourth sub support arms has a width along the long side direction and a length perpendicular to the long side direction, the width is 0.8 to 2 times the length. Therefore, the first to fourth sub support arms can maintain a certain structural strength, which is beneficial to the structural strength of the first support and the second support near the dome hole, thereby improving the stability of the overall operation of the key structure.

[0014] As an optional technical solution, the first support contains a support body and a reinforcing member, the reinforcing member is embedded in the support body, and the reinforcing member passes through the sliding shaft. As an optional technical solution, the reinforcing member surrounds the sliding hole. As an optional technical solution, the shaft diameter of the sliding shaft is greater than the shaft diameter of the grabbing shaft. As an optional technical solution, the first support contains a support body and a reinforcing member, the reinforcing member is embedded in the support body, the first support has a sliding shaft and a sliding hole formed beside the sliding shaft, the reinforcing member passes through the sliding shaft, and the first support is slidably and rotatably connected with the keycap of the long rectangular key structure through the sliding shaft. As an optional technical solution, the reinforcing member surrounds the sliding hole. As an optional technical solution, the first support has a sliding shaft and a sliding hole formed beside the sliding shaft, the second support has a grabbing shaft and a grabbing hole formed beside the grabbing shaft, the shaft diameter of the sliding shaft is greater than the shaft diameter of the grabbing shaft, the first support is slidably and rotatably connected with the keycap of the long rectangular key structure through the sliding shaft, and the second support is rotatably connected with the keycap of the long rectangular key structure through the grabbing shaft.

[0015] The utility model is described in detail below in combination with the drawings and specific embodiments, but is not limited to the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] FIG. 1 It is a partial explosion schematic view of long rectangular key structure according to the first embodiment.

[0017] FIG. 2 It is FIG. 1Exploded view of the medium-long rectangular key structure.

[0018] FIG. 3 For FIG. 1 Top view of the first bracket, the second bracket and the bottom plate of the medium-long rectangular key structure.

[0019] FIG. 4 For FIG. 2 Front view of the first bracket.

[0020] FIG. 5 For FIG. 2 Front view of the second bracket.

[0021] FIG. 6 For FIG. 2 Enlarged view of the first semi-open pivot hole of the first bracket from another perspective.

[0022] FIG. 7 For FIG. 2 Enlarged view of the second semi-open pivot hole of the first bracket from another perspective.

[0023] FIG. 8 For FIG. 2 Enlarged view of the fully open pivot hole of the first bracket from another perspective.

[0024] FIG. 9 For FIG. 2 Exploded view of the first bracket.

[0025] FIG. 10 For FIG. 2 Exploded view of the second bracket.

[0026] FIG. 11 For Part exploded view of the long rectangular key structure according to the second embodiment.

[0027] FIG. 12 FIG. 11 For Exploded view of the medium-long rectangular key structure.

[0028] FIG. 13 FIG. 11 For Top view of the first bracket, the second bracket and the bottom plate of the medium-long rectangular key structure.

[0029] FIG. 14 FIG. 12 For Front view of the first bracket.

[0030] FIG. 15 FIG. 12 For Front view of the second bracket.

[0031] FIG. 16 FIG. 12Enlarged view of the first semi-open pivot hole of the first bracket from another perspective.

[0032] FIG. 17 For FIG. 12 Enlarged view of the second semi-open pivot hole of the first bracket from another perspective.

[0033] FIG. 18 For FIG. 12 Enlarged view of the fully open pivot hole of the first bracket circled by a chain line from another perspective.

[0034] FIG. 19 For FIG. 12 Exploded view of the first bracket.

[0035] FIG. 20 For FIG. 12 Exploded view of the second bracket.

[0036] FIG. 21 For FIG. 13 Left side view of the structure shown.

[0037] FIG. 22 For Partial exploded view of the long rectangular key structure according to the third embodiment.

[0038] FIG. 23 For FIG. 22 Exploded view of the long rectangular key structure.

[0039] FIG. 24 For FIG. 22 Top view of the first bracket, the second bracket and the bottom plate of the long rectangular key structure.

[0040] FIG. 25 For FIG. 23 Front view of the first bracket.

[0041] FIG. 26 For FIG. 23 Front view of the second bracket.

[0042] FIG. 27 For FIG. 23 Enlarged view of the first semi-open pivot hole of the first bracket from another perspective.

[0043] FIG. 28 For FIG. 23 Enlarged view of the second semi-open pivot hole of the first bracket from another perspective.

[0044] FIG. 29 For FIG. 23 Enlarged view of the fully open pivot hole of the first bracket circled by a chain line from another perspective.

[0045] FIG. 30 ForFIG. 24 Left side view of the structure shown. DETAILED DESCRIPTION

[0046] The directional terms mentioned in the following embodiments are only the directions of the attached drawings. The prefix of the component name is only for separating the components for the purpose of description, and it does not give other limitations to the components; moreover, the components with the same prefix in each embodiment do not necessarily correspond. The correspondence of the components in each embodiment should be determined according to the specific structure described in each embodiment.

[0047] The utility model provides a key cap lifting mechanism for long rectangle key structure, this long rectangle key structure has long side direction and short side direction, this key cap lifting mechanism contains bottom plate, first support and second support. The bottom plate contains bottom hook, the first support contains bottom axle, forms bottom hole in the side of bottom axle, sliding axle and forms slide hole in the side of sliding axle, bottom axle is held in bottom hook rotatably, bottom hook extends into bottom hole, first support is slidably and rotatably connected with the key cap of long rectangle key structure through sliding axle, second support and first support are pivotally connected with each other around pivot axle, pivot axle is parallel to long side direction, second support contains catch axle and forms catch hole in the side of catch axle, second support is rotatably connected with the key cap of long rectangle key structure through catch axle, wherein the projection of bottom hole, slide hole and catch hole in a vertical direction overlaps in short side direction.

[0048] The utility model also provides a key cap lifting mechanism for long rectangle key structure, this long rectangle key structure has long side direction and short side direction, this key cap lifting mechanism contains first support and second support. The first support contains pivot hole, sliding axle and forms slide hole in the side of sliding axle, first support is slidably and rotatably connected with the key cap of long rectangle key structure through sliding axle, second support contains pivot axle, catch axle and forms catch hole in the side of catch axle, second support is rotatably connected with the key cap of long rectangle key structure through catch axle, pivot axle is inserted into pivot hole to make first support and second support relatively rotate around pivot axle, pivot axle is parallel to long side direction, wherein the projection of pivot hole, slide hole and catch hole in a vertical direction overlaps in short side direction.

[0049] The utility model also provides a key cap lifting mechanism for long rectangle key structure, this long rectangle key structure has long side direction and short side direction, this key cap lifting mechanism contains first support and second support. Second support and first support are pivotally connected with each other around pivot axle, first support and second support jointly form dome hole, wherein, for first support and second support, define dome hole coverage range in long side direction with dome hole as boundary, wherein, one support and second support do not have the structure connected with the key cap and bottom plate of long rectangle key structure in dome hole coverage range.

[0050] The utility model discloses still propose a key cap lifting mechanism for long rectangle button structure, this long rectangle button structure has long side direction and short side direction, this key cap lifting mechanism contains first support and second support. The first support contains long arm, first sub support arm and second sub support arm, the long arm parallels the long side direction extension, the first sub support arm and the second sub support arm from the long arm do not parallel the long side direction protruding extension, the first sub support arm and the second sub support arm between form the dome hole, the first support and the second support around a pivot axis each other pivot connection, wherein, to the first support and the second support, with the first sub support arm and the second sub support arm as the long side direction definition support arm coverage range, wherein, the first support in the support arm coverage range contains a plurality of first connecting portion, and the first support passes through a plurality of first connecting portion and the second support and the long rectangle button structure's key cap and bottom plate are connected, and the second support in the support arm coverage range contains a plurality of second connecting portion, and the second support passes through a plurality of second connecting portion and the first support and the long rectangle button structure's key cap and bottom plate are connected, and the number of a plurality of first connecting portion and a plurality of second connecting portion is greater than or equal to 8.

[0051] The utility model discloses still propose a key cap lifting mechanism for long rectangle button structure, this long rectangle button structure has long side direction and short side direction, this key cap lifting mechanism contains first support and second support. The first support contains first long arm, first sub support arm and second sub support arm, the first long arm parallels the long side direction extension, the first sub support arm and the second sub support arm from the first long arm do not parallel the long side direction protruding extension, the first sub support arm and the second sub support arm between form the dome hole, the first support and the second support around a pivot axis each other pivot connection, the first support contains second long arm, third sub support arm and fourth sub support arm, the second long arm parallels the second long side direction extension, the third sub support arm and the fourth sub support arm from the second long arm do not parallel the long side direction protruding extension, wherein, in the long side direction, the first sub support arm and the second sub support arm are between the third sub support arm and the fourth sub support arm, wherein, the first sub support arm to fourth sub support arm every sub support arm has along the long side direction's width and perpendicular to the long side direction's length, and the width is the length's 0.8-2 times.

[0052] Please refer to FIG. 1 And FIG. 2The long rectangular key structure 1 according to the first embodiment has a long side direction D1 and a short side direction D2 (both represented by double-headed arrows in the figures), and the long side direction D1 is perpendicular to the short side direction D2. In actual operation, the long rectangular key structure 1 can be, but is not limited to, a space bar. The ratio of the size of the key structure 1 in the long side direction D1 to the size of the key structure 1 in the short side direction D2 can be between 1.2 and 6, preferably between 1.5 and 5. In other embodiments, the key structure 1 can be other shaped key structures, in which case the long side direction D1 and the short side direction D2 are the extension directions of two mutually perpendicular sides of the key structure 1. The following embodiments are similar and will not be described again. The long rectangular key structure 1 comprises a key cap 10, a bottom plate 12, a first support 14, a second support 16, a switch circuit board 18, and an elastic dome 20. The key cap 10 is disposed above the bottom plate 12. The first support 14 and the second support 16 are pivotally connected to each other about a pivot axis A1 (represented by a chain line in the figures), which is parallel to the long side direction D1. The first support 14 and the second support 16 are respectively connected to the key cap 10 and the bottom plate 12 to support the key cap 10 above the bottom plate 12, so that the key cap 10 can move relative to the bottom plate 12 (for example, move up and down or be referred to as move parallel to a vertical direction Dv1) via the first support 14 and the second support 16. The vertical direction Dv1 (represented by a double-headed arrow in the figures) is perpendicular to the long side direction D1 and the short side direction D2. The switch circuit board 18 is disposed on the bottom plate 12. The switch circuit board 18 can be, but is not limited to, a thin film circuit board, which has a switch 182 (represented by a hatched circle in the figures) substantially corresponding to the center of the key cap 10. The elastic dome 20 is disposed on the switch circuit board 18 corresponding to the switch 182 and below the key cap 10. The key cap 10 can be pressed to move towards the bottom plate 12, thereby pressing the elastic dome 20 to trigger the switch 182 downward. Therefore, logically, the combination of the first support 14 and the second support 16 or the combination of the first support 14, the second support 16, and the bottom plate 12 can be regarded as a key cap lifting mechanism.

[0053] Please also refer to FIGS. 3-5 ; wherein, in FIG. 3 , the outline of the key cap 10 is shown by a dashed line in FIG. 3 . The first support 14 has a frame structure as a whole, mainly comprising a rectangular outer frame portion and a plurality of connecting portions connecting the two long sides (parallel to the long side direction D1) of the rectangular outer frame portion inside the rectangular outer frame portion. The first support 14 is connected to the key cap 10 and the bottom plate 12 via the two long sides of the rectangular outer frame portion. The second support 16 comprises a long arm 162 and a plurality of branch arms 164 extending from the long arm 162 non-parallel to the long side direction D1 (in the first embodiment, perpendicular to the long side direction D1); the ranges of the long arm 162 and the branch arms 164 are both shown by a dashed box in FIG. 5The second bracket 16 is connected with the keycap 10 via the long arm 162 and connected with the bottom plate 12 via the end of the arm 164. The ends of all the arms 164 of the second bracket 16 are connected with the bottom plate 12, and the second bracket 16 has no arm 164 with a free end, so all the arms 164 of the second bracket 16 substantially contribute to the overall structural strength of the second bracket 16. The second bracket 16 is pivotally connected inside the first bracket 14; in another aspect, the first bracket 14 is located on two opposite outer sides of the second bracket 16 on the pivot axis A1. Logically, the first bracket 14 can be regarded as an outer bracket, and the second bracket 16 can be regarded as an inner bracket.

[0054] As shown in FIG. 4 , the first bracket 14 comprises pivot holes, for example, the first bracket 14 comprises a first semi-open pivot hole 142, a second semi-open pivot hole 144, and six fully open pivot holes 146. In this embodiment, there are six fully open pivot holes 146, but this is not limited in other embodiments. The six fully open pivot holes 146 are arranged between the first semi-open pivot hole 142 and the second semi-open pivot hole 144 along the pivot axis A1. Please also refer to FIG. 6 . The first semi-open pivot hole 142 comprises two first hook portions 1422 and a first blind hole 1424, and the two first hook portions 1422 and the first blind hole 1424 are arranged adjacent to each other along the pivot axis A1. The two first hook portions 1422 are oppositely arranged to form a first gripping space 1422a, and the first gripping space 1422a is in communication with the first blind hole 1424. Please refer to FIG. 4 and FIG. 7 . The second semi-open pivot hole 144 comprises two second hook portions 1442 and a second blind hole 1444, and the two second hook portions 1442 and the second blind hole 1444 are arranged adjacent to each other along the pivot axis A1. The two second hook portions 1442 are oppositely arranged to form a second gripping space 1442a, and the second gripping space 1442a is in communication with the second blind hole 1444. As shown in FIG. 4 , the first semi-open pivot hole 142 and the second semi-open pivot hole 144 are structurally symmetrical. Please refer to FIG. 4 and FIG. 8 , wherein FIG. 8 shows an enlarged schematic view of one of the fully open pivot holes 146. This fully open pivot hole 146 comprises two third hook portions 1462, and the two third hook portions 1462 are oppositely arranged to form a third gripping space 1462a. The structures of the other fully open pivot holes 146 are also the same, but the orientations can be the same or opposite (which can be judged according to FIG. 4 ), which will not be described in detail.

[0055] In addition, as shown in FIG. 6As shown, the front end of the first hook portion 1422 near the bottom connecting side of the first support 14 (i.e. the side near the bottom plate 12) is spaced apart from the bottom connecting side by a distance 1422b in the short side direction D2, which is greater than the width 1422c of the first hook portion 1422 in the long side direction D1, for example, the distance 1422b is 1 to 4 times the width 1422c, but the actual operation is not limited thereto. This structure helps to maintain the structural strength of the first hook portion 1422 and the gripping force of the two first hook portions 1422.

[0056] As shown in FIG. 5 , the second support 16 includes pivots, for example, the second support 16 includes first pivots 166, second pivots 168, and intermediate pivots 170. In this embodiment, there are 6 intermediate pivots 170, but in other embodiments, the number is not limited thereto. The 6 intermediate pivots 170 are arranged between the first pivots 166 and the second pivots 168 along the pivot axis A1. Please also refer to FIG. 3 . By connecting the first pivots 166, the second pivots 168, and the 6 intermediate pivots 170 with the first semi-open pivot hole 142, the second semi-open pivot hole 144, and the 6 fully open pivot holes 146 respectively, the first support 14 and the second support 16 are pivotally connected to each other about the pivot axis A1. As shown in FIG. 3 , the first pivots 166 are gripped by the two first hook portions 1422 in the first gripping space 1422a and extend into the first blind hole 1424, the second pivots 168 are gripped by the two second hook portions 1442 in the second gripping space 1442a and extend into the second blind hole 1444, and the intermediate pivots 170 are gripped by the two third hook portions 1462 in the third gripping space 1462a. Among them, in the first semi-open pivot hole 142, the first pivot 166 is simultaneously structurally constrained by the two first hook portions 1422 and the first blind hole 1424; the same applies to the second semi-open pivot hole 144 and the second pivot 168. In the fully open pivot hole 146, the intermediate pivot 170 is mainly structurally constrained by the two third hook portions 1462. Therefore, in principle, the connection strength of the first semi-open pivot hole 142 and the first pivot 166 (or the second semi-open pivot hole 144 and the second pivot 168) is greater than that of the fully open pivot hole 146 and the intermediate pivot 170.

[0057] Please refer to FIGS. 3-5 . In the first support 14, there is a spacing 145a between the bottom of the first blind hole 1424 (of the first semi-open pivot hole 142) and the bottom of the second blind hole 1444 (of the second semi-open pivot hole 144) along the pivot axis A1, and there is a spacing 145b between the opening of the first blind hole 1424 and the opening of the second blind hole 1444 along the pivot axis A1; wherein the first blind hole 1424 and the second blind hole 1444 are FIG. 4The hidden outline in FIG is shown with dashed lines. In the second bracket 16, a spacing 169 is defined between the distal ends of the first pivot 166 and the distal ends of the second pivot 168 along the pivot axis A1. Spacing 169 is greater than spacing 145b and smaller than spacing 145a. During the actual assembly of the first bracket 14 and the second bracket 16, force can be applied to the second bracket 16 to slightly arch it, reducing the linear distance between the first pivot 166 and the second pivot 168 to less than the linear distance between the first and second half-open pivot holes 142 and 144. Next, the second bracket 16 is maintained arched, with the first and second pivots 166, 168 engaging the first and second half-open pivot holes 142 and 144, respectively. The second bracket 16 is then released. At this point, the intermediate pivot 170 should, in principle, contact the corresponding fully-open pivot hole 146. Next, the second bracket 16 is pressed toward the first bracket 14, causing the intermediate pivot 170 to engage with the fully open pivot hole 146. Finally, the first half-open pivot hole 142, the second half-open pivot hole 144, and the fully open pivot hole 146 are fully engaged with the first pivot 166, the second pivot 168, and the intermediate pivot 170, respectively. Furthermore, in the connection structure between the first bracket 14 and the second bracket 16, the first half-open pivot hole 142 and the second half-open pivot hole 144 are located at the outermost sides of the first bracket 14 along the pivot axis A1. Therefore, during assembly of the first and second brackets 14, 16, the second bracket 16 can be deformed minimally to allow the first and second pivots 166, 168 to engage with the first and second half-open pivot holes 142, 144. In other words, this connection structure design balances ease of assembly between the first and second brackets 14, 16 with overall connection strength between the two brackets. Furthermore, the first half-open pivot hole 142 and the second half-open pivot hole 144 being located at the outermost sides along the pivot axis A1 also help maintain the stability of the pivot connection between the first bracket 14 and the second bracket 16 .

[0058] In addition, if FIGS. 6-8 As shown, in the first embodiment, one side of the two first hooks 1422, the two second hooks 1442 or the two third hooks 1462 in the direction of the pivot axis A1 is open, and the other side has a side wall (perpendicular to the pivot axis A1; for example FIG. 6 Middle side wall 1426, FIG. 7 Middle side wall 1446, FIG. 8 The hooks 1422, 1442, and 1462 are connected to the middle sidewall 1464. This structural design helps increase the structural strength and gripping strength of the hook itself. However, this is not a limitation in practice. For example, the two first hooks 1422, the two second hooks 1442, or the two third hooks 1462 can be modified so that both sides in the direction of the pivot axis A1 are open (i.e., without sidewall connections). This structural design increases their flexibility and facilitates assembly with the first pivot 166, the second pivot 168, and the middle pivot 170.

[0059] Please refer to FIGS. 1-4 . The first bracket 14 has slide shafts and bottom shafts. In this embodiment, the first bracket 14 has six slide shafts 148a, 148b and six bottom shafts 150, but the number of the slide shafts and the bottom shafts is not limited in other embodiments. The six slide shafts 148a, 148b are arranged parallel to the pivot axis A1, and four slide shafts 148a are arranged between two slide shafts 148b. The slide shafts 148b can be formed as protruding columns extending parallel to the pivot axis A1. The first bracket 14 further has slide holes 149 formed beside each slide shaft 148a. The first bracket 14 is slidably and rotatably connected to the keycap 10 (the slide hooks 102) via the slide shafts 148a, 148b, with the slide hooks 102 extending into the corresponding slide holes 149. In addition, the six bottom shafts 150 are also arranged parallel to the pivot axis A1. The first bracket 14 further has bottom holes 151 formed beside each bottom shaft 150. The first bracket 14 is rotatably connected to the bottom plate 12 (the bottom hooks 122) via the bottom shafts 150, with the bottom shafts 150 rotatably hooked by the corresponding bottom hooks 122, and the bottom hooks 122 extending into the corresponding bottom holes 151. In addition, the bottom plate 12 further includes a plurality of stoppers 123. The stoppers 123 limit the first bracket 14 so that the bottom shafts 150 remain hooked by the corresponding bottom hooks 122.

[0060] Please refer to FIGS. 1-3 and FIG. 5 . The second bracket 16 has grab shafts and bottom shafts. In this embodiment, the second bracket 16 has eight grab shafts 172 and eight bottom shafts 174, but the number of the grab shafts and the bottom shafts is not limited in other embodiments. The eight grab shafts 172 and the eight bottom shafts 174 are arranged parallel to the pivot axis A1. The eight grab shafts 172 are arranged on the long arms 162, and two bottom shafts 174 are arranged on each branch arm 164. The second bracket 16 further has grab holes 173 formed beside each grab shaft 172. The second bracket 16 is rotatably connected to the keycap 10 (the grab hooks 104) via the grab shafts 172, with the grab hooks 104 extending into the corresponding grab holes 173. In addition, the second bracket 16 further has bottom holes 175 formed beside each bottom shaft 174. The second bracket 16 is slidably and rotatably connected to the bottom plate 12 (the bottom hooks 124) via the bottom shafts 174, with the bottom shafts 174 slidably and rotatably hooked by the corresponding bottom hooks 124, and the bottom hooks 124 extending into the corresponding bottom holes 175.

[0061] In addition, please refer to FIG. 1 and FIG. 3 . The keycap 10 has a first long side 10a and a second long side 10b, both of which are parallel to the long side direction D1. In FIG. 3 , the vertical direction Dv1 is perpendicular to the paper surface, so the structural outline shown in the figure is equivalent to the projection of the outline on the paper surface; in addition, the outline of the keycap 10 is shown in FIG. 3The projection of the sliding hole 149 of the first bracket 14 on the vertical direction Dv1 has a first distance L1 with the projection of the first long side 10a of the keycap 10 on the vertical direction Dv1 in the short side direction D2, and the projection of the grabbing hole 173 of the second bracket 16 on the vertical direction Dv1 has a second distance L2 with the projection of the second long side 10b of the keycap 10 on the vertical direction Dv1 in the short side direction D2. The first distance L1 is greater than the second distance L2. This structural configuration provides a larger space for the structural and operational design of the sliding shaft 148a of the first bracket 14. In addition, the shaft diameter of the sliding shaft 148a of the first bracket 14 is greater than the shaft diameter of the grabbing shaft 172 of the second bracket 16. This structural configuration helps to increase the stability of the rotation and sliding of the sliding shaft 148a.

[0062] In addition, in the first embodiment, the first bracket 14 and the second bracket 16 both have structural reinforcement design. Please refer to FIG. 4 and FIG. 9 wherein FIG. 9 is an exploded view of the first bracket 14. The first bracket 14 includes a bracket body 140 and a reinforcing member 141 embedded in the bracket body 140. The reinforcing member 141 passes through the sliding shaft 148a and completely surrounds the sliding hole 149. Both of these structural features can increase the structural strength of the sliding shaft 148a, thereby helping to increase the stability of the rotation and sliding of the sliding shaft 148a. In addition, the reinforcing member 141 also partially surrounds (surrounds three sides of) the first semi-open pivot hole 142 and the second semi-open pivot hole 144, which helps to increase the structural strength of the first semi-open pivot hole 142 and the second semi-open pivot hole 144, thereby helping to increase the stability of the pivot connection of the first bracket 14 and the second bracket 16. In addition, the reinforcing member 141 itself also has multiple bending structures extending parallel to the pivot axis A1. This structural feature helps to increase the structural strength of the reinforcing member 141 itself, thereby increasing the structural strength of the first bracket 14. In the first embodiment, the reinforcing member 141 is not distributed on the entire rectangular frame portion of the first bracket 14 (for example, the reinforcing member 141 is present on one of the two short sides and the two long sides of the rectangular frame portion), but the reinforcing member 141 still has a structural connection between the two long sides of the rectangular frame portion (by passing through the connecting portion connecting the two side edges on the inside of the rectangular frame portion), so that the reinforcing member 141 still has the effect of structural reinforcement on the entire rectangular frame portion. In actual operation, the reinforcing member 141 can also be designed to exist on both long sides.

[0063] Similarly, please refer to FIG. 5 and FIG. 10 wherein FIG. 10The second support 16 comprises a support body 160 and a reinforcing member 161 embedded in the support body 160 to reinforce the structural strength of the second support 16. In addition, the reinforcing member 161 itself also has multiple bending structures to help increase the structural strength of the reinforcing member 161 itself, thereby increasing the structural strength of the second support 16. In addition, in actual operation, the support bodies 140, 160 can be, but are not limited to, plastic, and the reinforcing members 141, 161 can be, but are not limited to, metal. In addition, in actual operation, it is not limited that both the first support 14 and the second support 16 are structurally reinforced by the reinforcing members 141, 161.

[0064] The second support and the first support are pivotally connected around a pivot axis. In addition, as shown in FIG. 3 In the first embodiment, the first support 14 and the second support 16 jointly form the dome hole 22 (in which the elastic circular protrusion 20 is accommodated, as shown in FIG. 1 For the first support 14 and the second support 16, the dome hole 22 defines a dome hole coverage range R1 in the long edge direction D1 (the range is indicated by a chain line in the figure). The first support 14 and the second support 16 do not have structures (such as the sliding shaft 148a / slide hole 149, the grabbing shaft 172 / grabbing hole 173) connected to the keycap 10 and the bottom plate 12 within this dome hole coverage range R1. This structural design can avoid weakening the structure of the first support 14 and the second support 16 at this location due to the arrangement of the connecting structure. In an embodiment, the aforementioned multiple support arms 164 comprise a first sub-support arm and a second sub-support arm, and the dome hole 22 is formed between the first sub-support arm and the second sub-support arm. For the first support and the second support, the first sub-support arm and the second sub-support arm define an arm coverage range in the long edge direction D1. The first support comprises a plurality of first connecting portions within the arm coverage range, and the first support is connected to the second support and the keycap and the bottom plate of the long rectangular key structure through the plurality of first connecting portions. The second support comprises a plurality of second connecting portions within the arm coverage range, and the second support is connected to the first support and the keycap and the bottom plate of the long rectangular key structure through the plurality of second connecting portions. The number of the plurality of first connecting portions and the plurality of second connecting portions is greater than or equal to 8.

[0065] Please refer to FIG. 11 and FIG. 12The long rectangular key structure 3 according to the second embodiment has a long side direction D3 and a short side direction D4 (both represented by double-headed arrows in the figure), and the long side direction D3 is perpendicular to the short side direction D4. In actual operation, the long rectangular key structure 3 can be, but is not limited to, a space bar. The long rectangular key structure 3 includes a key cap 30, a bottom plate 32, a first support 34, a second support 36, a switch circuit board 38, and an elastic round protrusion 40. The key cap 30 is disposed above the bottom plate 32. The first support 34 and the second support 36 are pivotally connected to each other about a pivot axis A3 (represented by a chain line in the figure), and the pivot axis A3 is parallel to the long side direction D3. The first support 34 and the second support 36 are respectively connected to the key cap 30 and the bottom plate 32 to support the key cap 30 above the bottom plate 32, so that the key cap 30 can move (for example, move up and down or be referred to as move parallel to a vertical direction Dv3) relative to the bottom plate 32 via the first support 34 and the second support 36. The vertical direction Dv3 (represented by a double-headed arrow in the figure) is perpendicular to the long side direction D3 and the short side direction D4. The switch circuit board 38 is disposed on the bottom plate 32. The switch circuit board 38 can be, but is not limited to, a thin film circuit board, and has a switch 382 (represented by a hatched circle in the figure) corresponding to the center of the key cap 30. The elastic round protrusion 40 is disposed on the switch circuit board 38 corresponding to the switch 382 and below the key cap 30. The key cap 30 can be pressed to move towards the bottom plate 32, thereby pressing the elastic round protrusion 40 to trigger the switch 382 downward. Therefore, logically, the combination of the first support 34 and the second support 36 or the combination of the first support 34, the second support 36, and the bottom plate 32 can be regarded as a key cap lifting mechanism.

[0066] Please also refer to FIGS. 13-15 ; wherein, in FIG. 13 , the outline of the key cap 30 is shown by a dashed line in FIG. 13 . The first support 34 includes a first long arm 342 and a plurality of first branch arms 344 extending from the first long arm 342 non-parallel to the long side direction D3 (in the second embodiment, perpendicular to the long side direction D3); the ranges of the first long arm 342 and the first branch arms 344 are both shown by a dashed box in FIG. 14 . The first support 34 is connected to the key cap 30 via the first long arm 342, and is connected to the bottom plate 32 via (the end of) the first branch arm 344. The second support 36 includes a second long arm 362 and a plurality of second branch arms 364 extending from the second long arm 362 non-parallel to the long side direction D3 (in the second embodiment, perpendicular to the long side direction D3); the ranges of the second long arm 362 and the second branch arms 364 are both shown by a dashed box in FIG. 15The second bracket 36 is connected with the keycap 30 via a second long arm 362 and connected with the bottom plate 32 via (the end of) a second short arm 364. The first bracket 34 and the second bracket 36 are pivotally connected with each other via the plurality of first short arms 344 and the plurality of second short arms 364. The plurality of first short arms 344 and the plurality of second short arms 364 are substantially staggered along the pivot axis A3; wherein the outermost short arms on the pivot axis A3 are the first short arms 344, and at least one of the first short arms 344 is located between two of the second short arms 364 in the longitudinal direction D3, and one of the second short arms 364 is located between two of the first short arms 344 in the longitudinal direction D3. In another aspect, the first bracket 34 extends to the two opposite outer sides of the second bracket 36 on the pivot axis A3. Logically, the first bracket 34 can be regarded as an outer bracket, and the second bracket 36 can be regarded as an inner bracket. In addition, the ends of all the first short arms 344 of the first bracket 34 are connected with the bottom plate 32, and the first bracket 34 does not have a first short arm 344 with a free end, so all the first short arms 344 of the first bracket 34 substantially contribute to the overall structural strength of the first bracket 34. Similarly, the ends of all the second short arms 364 of the second bracket 36 are connected with the bottom plate 32, and the second bracket 36 does not have a second short arm 364 with a free end, so all the second short arms 364 of the second bracket 36 substantially contribute to the overall structural strength of the second bracket 36. This structural configuration can increase the stability of the first bracket 34 and the second bracket 36 in operation.

[0067] As shown in FIG. 14 , the first bracket 34 comprises pivot holes, for example, the first bracket 34 comprises a first semi-open pivot hole 346, a second semi-open pivot hole 348, and six full-open pivot holes 350. In the present embodiment, there are six full-open pivot holes 350, but this is not limited in other embodiments. The first semi-open pivot hole 346, the second semi-open pivot hole 348, and the six full-open pivot holes 350 are all arranged on the plurality of first short arms 344. The six full-open pivot holes 350 are arranged between the first semi-open pivot hole 346 and the second semi-open pivot hole 348 along the pivot axis A3. Please also refer to FIG. 16 . The first semi-open pivot hole 346 comprises two first hook portions 3462 and a first blind hole 3464, which are arranged adjacent to each other along the pivot axis A3. The two first hook portions 3462 are oppositely arranged to form a first gripping space 3462a, and the first gripping space 3462a is in communication with the first blind hole 3464. Please refer to FIG. 14 and FIG. 17 . The second semi-open pivot hole 348 comprises two second hook portions 3482 and a second blind hole 3484, which are arranged adjacent to each other along the pivot axis A3. The two second hook portions 3482 are oppositely arranged to form a second gripping space 3482a, and the second gripping space 3482a is in communication with the second blind hole 3484. AsFIG. 14 As shown, the first half open pivot hole 346 and the second half open pivot hole 348 are symmetrical in structure. FIG. 14 and FIG. 18 ,in FIG. 18 An enlarged schematic diagram of one of the fully open pivot holes 350 is shown. This fully open pivot hole 350 includes two third hooks 3502, which are arranged opposite to each other to form a third gripping space 3502a. The other fully open pivot holes 350 have the same structure, but may face the same direction or the opposite direction (depending on the FIG. 14 and judged it), I will not elaborate on it separately.

[0068] In addition, if FIG. 16 As shown, the distance 3462b between the front end of the first hook portion 3462, which is closer to the bottom plate connection side edge of the first bracket 34 (i.e., the side edge closer to the bottom plate 32), and the bottom plate connection side edge in the short direction D4 is greater than the width 3462c of the first hook portion 3462 in the long direction D3. For example, the distance 3462b is 1 to 4 times the width 3462c, but this is not limited to actual operation. This structural design helps maintain the structural strength of the first hook portion 3462 and the gripping force of the two first hook portions 3462.

[0069] like FIG. 15 As shown, the second bracket 36 includes a pivot, for example, the second bracket 36 includes a first pivot 366, a second pivot 368 and an intermediate pivot 370. In this embodiment, there are six intermediate pivots 370, but this is not limited to other embodiments. The six intermediate pivots 370 are arranged between the first pivot 366 and the second pivot 368 along the pivot axis A3. FIG. 13 The first pivot 366, the second pivot 368 and the six intermediate pivots 370 are connected to the first half-open pivot hole 346, the second half-open pivot hole 348 and the six fully open pivot holes 350 respectively, so that the first bracket 34 and the second bracket 36 are pivotally connected to each other around the pivot axis A3. FIG. 13As shown, the first pivot 366 is held by the two first hooks 3462 in the first holding space 3462a and extends into the first blind hole 3464, the second pivot 368 is held by the two second hooks 3482 in the second holding space 3482a and extends into the second blind hole 3484, and the intermediate pivot 370 is held by the two third hooks 3502 in the third holding space 3502a. Among them, in the first semi-open pivot hole 346, the first pivot 366 is simultaneously structurally constrained by the two first hooks 3462 and the first blind hole 3464; the same is true for the second semi-open pivot hole 348 and the second pivot 368. In the fully open pivot hole 350, the intermediate pivot 370 is mainly structurally constrained by the two third hooks 3502. Therefore, in principle, the connection strength of the first semi-open pivot hole 346 and the first pivot 366 (or the second semi-open pivot hole 348 and the second pivot 368) is greater than that of the fully open pivot hole 350 and the intermediate pivot 370.

[0070] Please refer to FIGS. 13-15 In the first support 34, there is a spacing 349a between the bottom of the first blind hole 3464 (of the first semi-open pivot hole 346) and the bottom of the second blind hole 3484 (of the second semi-open pivot hole 348) along the pivot axis A3, and there is a spacing 349b between the opening of the first blind hole 3464 and the opening of the second blind hole 3484 along the pivot axis A3; among them, the first blind hole 3464 and the second blind hole 3484 are located on the same side of the pivot axis A3. FIG. 14The hidden contour in the second bracket 36 is shown by a dotted line. In the second bracket 36, there is a spacing 367 between the end of the first pivot 366 and the end of the second pivot 368 along the pivot axis A3. The spacing 367 is greater than the spacing 349b and smaller than the spacing 349a. In the actual assembly of the first bracket 34 and the second bracket 36, the second bracket 36 can be first forced to be slightly arched, so that the linear distance between the first pivot 366 and the second pivot 368 is reduced to be smaller than the linear distance between the first semi-open pivot hole 346 and the second semi-open pivot hole 348. Then, the second bracket 36 is kept arched and the first pivot 366 and the second pivot 368 of the second bracket 36 are clamped into the first semi-open pivot hole 346 and the second semi-open pivot hole 348. After that, the second bracket 36 is released. At this time, the intermediate pivot 370 will in principle contact the corresponding full-open pivot hole 350. Then, the second bracket 36 is pressed towards the first bracket 34, so that the intermediate pivot 370 is clamped into the full-open pivot hole 350. Finally, the first semi-open pivot hole 346, the second semi-open pivot hole 348 and the full-open pivot hole 350 are respectively connected with the first pivot 366, the second pivot 368 and the intermediate pivot 370. In addition, in the connection structure of the first bracket 34 and the second bracket 36, the first semi-open pivot hole 346 and the second semi-open pivot hole 348 are located at the outermost side of the first bracket 34 along the pivot axis A3, so that in the process of assembling the first bracket 34 and the second bracket 36, the second bracket 36 can be connected with the first semi-open pivot hole 346 and the second semi-open pivot hole 348 with a small degree of deformation. In other words, this connection structure design can balance the assembly convenience of the first bracket 34 and the second bracket 36 and the overall connection strength between the first bracket 34 and the second bracket 36. In addition, the location of the first semi-open pivot hole 346 and the second semi-open pivot hole 348 at the outermost side along the pivot axis A3 also helps to maintain the stability of the pivot connection between the first bracket 34 and the second bracket 36.

[0071] In addition, as shown in FIG. 6, in the second embodiment, the two first hooks 3462, the two second hooks 3482 or the two third hooks 3502 are open on one side in the direction of the pivot axis A3 and connected by a side wall (perpendicular to the pivot axis A3; for example, the side wall 3466 in the first hook 3462, the side wall 3486 in the second hook 3482 and the side wall 3504 in the third hook 3502) on the other side. This structure design helps to increase the structural strength of the hooks themselves and the gripping strength of the hooks. However, in actual operation, this is not limited. For example, the structure of the two first hooks 3462, the two second hooks 3482 or the two third hooks 3502 is modified so that both sides in the direction of the pivot axis A3 are open (i.e., no side wall is connected). This structure design can increase the structural flexibility, which is beneficial for assembly with the first pivot 366, the second pivot 368 and the intermediate pivot 370. FIGS. 16-18 FIG. 16 FIG. 17 FIG. 18 ​​​​

[0072] Referring to FIGS. 11-14 The first bracket 34 has slide shafts and bottom shafts. In this embodiment, the first bracket 34 has six slide shafts 352a, 352b and eight bottom shafts 354, but the number of the slide shafts and the bottom shafts is not limited to this in other embodiments. The six slide shafts 352a, 352b are arranged parallel to the pivot axis A3 and disposed on the first long arms 342, wherein four slide shafts 352a are located between two slide shafts 352b. The slide shafts 352b can be formed by protruding columns extending parallel to the pivot axis A3. The first bracket 34 also has a slide hole 353 formed beside each slide shaft 352a. The first bracket 34 is slidably and rotatably connected to the keycap 30 (the slide hook 302) via the slide shafts 352a, 352b, wherein the slide hook 302 extends into the corresponding slide hole 353. In addition, the eight bottom shafts 354 are also arranged parallel to the pivot axis A3 and disposed on the first arms 344. The first bracket 34 also has a bottom hole 355 formed beside each bottom shaft 354. The first bracket 34 is rotatably connected to the bottom plate 32 (the bottom hook 322) via the bottom shafts 354, wherein the bottom shafts 354 are rotatably hooked to the corresponding bottom hook 322, and the bottom hook 322 extends into the corresponding bottom hole 355. In addition, the bottom plate 32 also includes a plurality of stop portions 323. The stop portions 323 limit the first bracket 34 so that the bottom shafts 354 remain hooked to the corresponding bottom hook 322. In addition, in the second embodiment, the stop portions 323 are aligned with the first hook portion 3462, the second hook portion 3482, or the third hook portion 3502 in the short direction D4, and this structure can provide structural restraint for the first hook portion 3462, the second hook portion 3482, or the third hook portion 3502, which is beneficial to the gripping force of the first hook portion 3462, the second hook portion 3482, or the third hook portion 3502.

[0073] Referring to FIGS. 11-13 and FIG. 15 The second bracket 36 has grab shafts and bottom shafts. In this embodiment, the second bracket 36 has six grab shafts 372 and eight bottom shafts 374, but the number of the grab shafts and the bottom shafts is not limited to this in other embodiments. The six grab shafts 372 and the eight bottom shafts 374 are arranged parallel to the pivot axis A3, the six grab shafts 372 are disposed on the long arms 362, and each second arm 364 is provided with two bottom shafts 374. The second bracket 36 also has a grab hole 373 formed beside each grab shaft 372. The second bracket 36 is rotatably connected to the keycap 30 (the grab hook 304) via the grab shafts 372, wherein the grab hook 304 extends into the corresponding grab hole 373. In addition, the second bracket 36 also has a bottom hole 375 formed beside each bottom shaft 374. The second bracket 36 is slidably and rotatably connected to the bottom plate 32 (the bottom hook 324) via the bottom shafts 374, wherein the bottom shafts 374 are slidably and rotatably hooked to the corresponding bottom hook 324, and the bottom hook 324 extends into the corresponding bottom hole 375.

[0074] In addition, please refer to FIG. 11 and FIG. 13 , the keycap 30 has a first long side 30a and a second long side 30b, both of which are parallel to the long side direction D3. In FIG. 13 , the vertical direction Dv3 is perpendicular to the paper surface, so the structural profile shown in the figure is equivalent to the projection of its vertical projection on the paper surface; in addition, the profile of the keycap 30 is shown in dashed lines in FIG. 13 . In the second embodiment, the projection of the sliding hole 353 of the first support 34 on the vertical direction Dv3 has a first distance L3 on the short side direction D4 between the projection of the first long side 30a of the keycap 30 on the vertical direction Dv3, and the projection of the grabbing hole 373 of the second support 36 on the vertical direction Dv3 has a second distance L4 on the short side direction D4 between the projection of the second long side 30b of the keycap 30 on the vertical direction Dv3, the first distance L3 is greater than the second distance L4. This structural configuration provides a larger space for the structure and actuation design of the sliding shaft 352a of the first support 34. In addition, the shaft diameter of the sliding shaft 352a of the first support 34 is greater than the shaft diameter of the grabbing shaft 372 of the second support 36; this structural configuration helps to increase the stability of the rotation and sliding of the sliding shaft 352a.

[0075] In addition, in the second embodiment, both the first support 34 and the second support 36 have a structural reinforcement design. Please refer to FIG. 14 and FIG. 19 , wherein FIG. 19 is an exploded schematic view of the first support 34. The first support 34 includes a support body 340 and a reinforcing member 341, and the reinforcing member 341 is embedded in the support body 340. The reinforcing member 341 passes through the sliding shaft 352a and completely surrounds the sliding hole 353. Both of these structural features can increase the structural strength of the sliding shaft 352a, thereby helping to increase the stability of the rotation and sliding of the sliding shaft 352a. In addition, the reinforcing member 341 also partially surrounds (surrounds three sides of) the first semi-open pivot hole 346 and the second semi-open pivot hole 348, which helps to increase the structural strength of the first semi-open pivot hole 346 and the second semi-open pivot hole 348, thereby helping to increase the stability of the pivot connection of the first support 34 and the second support 36. In addition, the reinforcing member 341 itself also has multiple bending structures that extend parallel to the pivot axis A3. This structural feature helps to increase the structural strength of the reinforcing member 341 itself, thereby increasing the structural strength of the first support 34.

[0076] Similarly, please refer to FIG. 15 and FIG. 20 , wherein FIG. 20The exploded view of the second bracket 36. The second bracket 36 comprises a bracket body 360 and a reinforcing member 361 embedded in the bracket body 360 to reinforce the structural strength of the second bracket 36. In addition, the reinforcing member 361 itself also has multiple bending structures to help increase the structural strength of the reinforcing member 361 itself, and in turn, the structural strength of the second bracket 36. In addition, in actual operation, the bracket bodies 340, 360 can be but are not limited to plastic, and the reinforcing members 341, 361 can be but are not limited to metal. In addition, in actual operation, it is not limited that both the first bracket 34 and the second bracket 36 are structurally reinforced by the reinforcing members 341, 361.

[0077] The second bracket and the first bracket are pivotally connected to each other around a pivot axis. In addition, as shown in FIG. 13 , in the second embodiment, the first bracket 34 and the second bracket 36 jointly form the dome hole 42 (in which the elastic circular protrusion 40 is accommodated, as shown in FIG. 11 ). The first bracket 34 and the second bracket 36 are defined by the dome hole 42 in the long direction D3 to define a dome hole coverage range R3 (the range of which is indicated by a chain line in the figure). The first bracket 34 and the second bracket 36 do not have structures (such as the sliding shaft 352a / slide hole 353, the grabbing shaft 372 / grabbing hole 373) connected to the keycap 30 and the bottom plate 32 within this dome hole coverage range R3. This structural design can avoid weakening the structure of the first bracket 34 and the second bracket 36 at this location due to the arrangement of the connecting structure.

[0078] In addition, as shown in FIG. 14 , in the first bracket 34, the dome hole 42 is formed between the two first arms 344 (or said two first arms 344 form the dome hole 42, and no second arm 364 is arranged between the two first arms 344, and the two first arms 344 can be defined as a first sub-arm and a second sub-arm, i.e., the first sub-arm and the second sub-arm form the dome hole 42 between them). The distance 356 from the bottom hole 355 on the first arm 344 to the dome hole 42 in the long direction D3 is greater than or equal to 0.25 times the aperture 42a of the dome hole 42 in the long direction D3. This structural design helps to maintain the structural strength of the arms (i.e., the aforementioned two first arms 344) adjacent to the dome hole 42.

[0079] In addition, please refer to FIG. 13 and FIG. 21 ; wherein FIG. 21 is FIG. 13the left side view of the first bracket 34, the pivot axis A3 is marked with a cross in the figure, the hidden profile of the first pivot 366 (on the second bracket 36) is drawn with chain lines, the hidden profile of the first blind hole 3464 of the first semi-open pivot hole 346 (on the first bracket 34) coincides with the hidden profile of the first pivot 366, the hidden profile of the bottom hooks 322, 324 (of the bottom plate 32) is drawn with chain lines, the hidden profile of the bottom hole 355 (on the first bracket 34) is also drawn with dotted lines, and the hidden profile of the bottom hole 375 (on the second bracket 36) is also drawn with dotted lines. As shown in FIG. 21 the projection of the first pivot 366 on the long direction D3 (i.e. corresponding to that shown by the hidden profile of the first pivot 366 in the figure) overlaps with the projection of the bottom hook 322 or the bottom hole 355 on the long direction D3 (i.e. corresponding to that shown by the hidden profile of the bottom hook 322 or the bottom hole 355 in the figure); the projection of the first pivot 366 on the long direction D3 overlaps with the projection of the bottom hook 324 or the bottom hole 375 on the long direction D3 (i.e. corresponding to that shown by the hidden profile of the bottom hook 324 or the bottom hole 375 in the figure). This structural configuration reduces the distance from the first pivot 366 to the bottom hooks 322, 324, i.e. reduces the force arm from the first pivot 366 to the bottom hooks 322, 324, which can reduce the degree of deformation of the first bracket 34 and the second bracket 36 when force is transmitted, thereby increasing the stability of the first bracket 34 and the second bracket 36 in operation. The foregoing description also applies to the structural features of the second semi-open pivot hole 348 and the fully open pivot hole 350 on the first bracket 34, the second pivot 368 and the intermediate pivot 370 on the second bracket 36, other bottom hooks 322, 324 on the bottom plate 32, other bottom holes 355 on the first bracket 34, other bottom holes 375 on the second bracket 36, etc., and will not be described in detail.

[0080] In addition, as shown in FIG. 13As shown, in the second embodiment, the connecting structure of the first support 34 and the second support 36 is exemplified by the chain-dotted frame in the figure, where the slide shaft 352a, the slide hole 353, the full-open pivot hole 350, the bottom shaft 354 and the bottom hole 355 of the first support 34 and the grip shaft 372, the grip hole 373, the middle pivot shaft 370, the bottom shaft 374 and the bottom hole 375 of the second support 36 are arranged relatively close to each other, and the first support 34 and the second support 36 transfer force between them and between the keycap 30 and the bottom plate 32 through the aforementioned structure. The aforementioned structure is arranged relatively close to the pivot axis A3, which helps to reduce the torque component perpendicular to the pivot axis A3 when transferring force, which helps to stabilize the linkage between the first support 34 and the second support 36 and between the keycap 30 and the bottom plate 32, thereby increasing the stability of the first support 34 and the second support 36. In one embodiment, the projections of the bottom hole, the slide hole and the grip hole on the vertical direction Dv3 overlap each other in the short side direction D4. In the second embodiment, the bottom hole 355 and the slide hole 352a of the first support 34 and the grip hole 373 of the second support 36 overlap each other in the short side direction D4. In the FIG. 13 In one embodiment, the pivot shaft of the second support is inserted into the pivot hole of the first support to allow the first support and the second support to rotate relative to the pivot axis, and the projections of the pivot hole, the slide hole and the grip hole on the vertical direction Dv4 overlap each other in the short side direction D4. In the second embodiment, the slide hole 352a and the full-open pivot hole 350 of the first support 34 and the grip hole 373 of the second support 36 also overlap each other in the short side direction D4. In addition, in the second embodiment, the first support 34 and the second support 36 have many other connecting structures arranged relatively close to each other, which also have the aforementioned projection overlap feature, so they also have corresponding effects, which will not be described in detail.

[0081] In addition, as FIG. 13As shown, for the first support 34 and the second support 36, the arm coverage range R4 (its range is indicated by chain lines in the figure) is defined in the long direction D3 by the two first arms 344 of the first support 34 that are immediately adjacent to the dome hole 42 (or said two first arms 344 form the dome hole 42, and no second arm 364 is arranged between the two first arms 344). The arm coverage range R4 covers the dome hole 42, the first support 34 and the second support 36, and a plurality of connection structures in the first support 34 (including the two slide shafts 352 / slide holes 353, the two bottom shafts 354 / bottom holes 355, and the two fully open pivot holes 350) and the second support 36 (including the two catch shafts 372 / catch holes 373, and the two intermediate pivot shafts 370). The number of the connection structures in the arm coverage range R4 is a certain value (for example, but not limited to, greater than or equal to 8. In an embodiment, the first support includes a plurality of first connection portions in the arm coverage range R4, the first support is connected to the second support, the keycap and the bottom plate of the long rectangular key structure through the plurality of first connection portions, the second support includes a plurality of second connection portions in the arm coverage range R4, the second support is connected to the first support, the keycap and the bottom plate of the long rectangular key structure through the plurality of second connection portions, and the number of the plurality of first connection portions and the plurality of second connection portions is greater than or equal to 8; in a second embodiment, the number of the connection structures is 10), which can increase the structural strength of the first support 34 and the second support 36 at this position (in another aspect, compensate for the decrease in the structural strength of the first support 34 and the second support 36 due to the existence of the dome hole 42), improve the transmission effect (including transmission along the pivot axis A3) of the first support 34 and the second support 36 at this position, and further increase the stability of the first support 34 and the second support 36.

[0082] In addition, as shown in FIG. 6, the first support 34 and the second support 36 are arranged in the long direction D3, and the first support 34 and the second support 36 are arranged in the long direction D3. FIG. 14 and FIG. 15As shown, the two first arms 344 (i.e. the first and second sub-arms) adjacent to the dome hole 42 have a width 344a along the longitudinal direction D3 and a length 344b perpendicular to the longitudinal direction D3, the width 344a being 0.8 to 2 times the length 344b. This structural design helps to maintain the structural strength of the first arms 344 to a certain extent. Also, the two second arms 364 (which can be defined as the third and fourth sub-arms) adjacent to the two first arms 344 have a width 364a along the longitudinal direction D3 and a length 364b perpendicular to the longitudinal direction D3, the width 364a also being 0.8 to 2 times the length 364b. In other words, in the longitudinal direction, the first and second sub-arms are located between the third and fourth sub-arms, each of the first to fourth sub-arms has a width along the longitudinal direction D3 and a length perpendicular to the longitudinal direction D3, the width being 0.8 to 2 times the length. Similarly, this structural design helps to maintain the structural strength of the second arms 364 to a certain extent. In addition, the second arms 364 adjacent to the two first arms 344 are two, and the two second arms 364 are located outside the two first arms 344 along the pivot axis A3.

[0083] Please refer to FIG. 22 and FIG. 23 . The long rectangular key structure 5 according to the third embodiment has a longitudinal direction D5 and a transverse direction D6 (both represented by double-headed arrows in the figure), the longitudinal direction D5 being perpendicular to the transverse direction D6. In actual operation, the long rectangular key structure 5 can be, but is not limited to, a blank key. The long rectangular key structure 5 includes a keycap 50, a bottom plate 52, a first support 54, a second support 56, a switch circuit board 58, and a resilient dome 60. The keycap 50 is disposed above the bottom plate 52. The first support 54 and the second support 56 are pivotally connected to each other about a pivot axis A5 (represented by a chain line in the figure), the pivot axis A5 being parallel to the longitudinal direction D5. The first support 54 and the second support 56 are respectively connected to the keycap 50 and the bottom plate 52 to support the keycap 50 above the bottom plate 52, so that the keycap 50 can move relative to the bottom plate 52 (e.g. move up and down or be referred to as move parallel to a vertical direction Dv5) via the first support 54 and the second support 56. The vertical direction Dv5 (represented by a double-headed arrow in the figure) is perpendicular to the longitudinal direction D5 and the transverse direction D6. The switch circuit board 58 is disposed on the bottom plate 52. The switch circuit board 58 has a switch 582 (represented by a hatched circle in the figure) substantially corresponding to the center of the keycap 50. The resilient dome 60 is disposed on the switch circuit board 58 corresponding to the switch 582 and below the keycap 50. The keycap 50 can be pressed to move towards the bottom plate 52, thereby pressing the resilient dome 60 to trigger the switch 582 downward. Therefore, logically, the combination of the first support 54 and the second support 56 or the combination of the first support 54, the second support 56, and the bottom plate 52 can be regarded as a keycap lifting mechanism.

[0084] See also FIGS. 24-26 Among them, FIG. 24 In FIG, the outline of the key cap 50 is shown in dotted lines. FIG. 24 The first bracket 54 includes a first long arm 542 and a plurality of first support arms 544 extending from the first long arm 542 non-parallel to the long side direction D5 (extending perpendicular to the long side direction D5 in the third embodiment); the ranges of the first long arm 542 and the first support arms 544 are indicated by dotted lines. FIG. 25 The first bracket 54 is connected to the keycap 50 via the first long arm 542, and is connected to the base plate 52 via (the end of) the first support arm 544. The second bracket 56 includes a second long arm 562 and a plurality of second support arms 564 extending from the second long arm 562 non-parallel to the longitudinal direction D5 (extending perpendicular to the longitudinal direction D5 in the third embodiment); the ranges of the second long arm 562 and the second support arms 564 are indicated by dotted lines. FIG. 26 The second bracket 56 is connected to the keycap 50 via the second long arm 562 and to the base plate 52 via (the end of) the second arm 564. The first bracket 54 and the second bracket 56 are pivotally connected to each other via the plurality of first arms 544 and the plurality of second arms 564. The plurality of first arms 544 and the plurality of second arms 564 are arranged in a staggered manner substantially along the pivot axis A5; the outermost arms on the pivot axis A5 are the first arms 544, and at least one of the first arms 544 is located between two second arms 564 in the longitudinal direction D5, and one of the second arms 564 is located between two first arms 544 in the longitudinal direction D5. In other words, the first bracket 54 extends to two opposite outer sides of the second bracket 56 on the pivot axis A5. Logically, the first bracket 54 can be considered an outer bracket, and the second bracket 56 can be considered an inner bracket. Furthermore, the ends of all first arms 544 of the first bracket 54 are connected to the base plate 52. The first bracket 54 does not have a first arm 544 with a free end. Therefore, all first arms 544 of the first bracket 54 contribute substantially to the overall structural strength of the first bracket 54. Similarly, the ends of all second arms 564 of the second bracket 56 are connected to the base plate 52. The second bracket 56 does not have a second arm 564 with a free end. Therefore, all second arms 564 of the second bracket 56 contribute substantially to the overall structural strength of the second bracket 56. This structural configuration enhances the operational stability of the first and second brackets 54, 56.

[0085] like FIG. 25As shown, the first support 54 comprises pivot holes, for example, the first support 54 comprises first semi-open pivot holes 546, second semi-open pivot holes 548, and full open pivot holes 550. In this embodiment, there are six full open pivot holes 550, but the number of full open pivot holes 550 is not limited to six in other embodiments. The first semi-open pivot holes 546, the second semi-open pivot holes 548, and the six full open pivot holes 550 are arranged on the plurality of first support arms 344. The six full open pivot holes 550 are arranged between the first semi-open pivot holes 546 and the second semi-open pivot holes 548 along the pivot axis A5. Please also refer to FIG. 27 . The first semi-open pivot holes 546 comprise two first hook portions 5462 and a first blind hole 5464. The two first hook portions 5462 and the first blind hole 5464 are arranged adjacent to each other along the pivot axis A5. The two first hook portions 5462 are oppositely arranged to form a first gripping space 5462a, and the first gripping space 5462a is in communication with the first blind hole 5464. Please refer to FIG. 25 and FIG. 28 . The second semi-open pivot holes 548 comprise two second hook portions 5482 and a second blind hole 5484. The two second hook portions 5482 and the second blind hole 5484 are arranged adjacent to each other along the pivot axis A5. The two second hook portions 5482 are oppositely arranged to form a second gripping space 5482a, and the second gripping space 5482a is in communication with the second blind hole 5484. As shown in FIG. 25 , the first semi-open pivot holes 546 and the second semi-open pivot holes 548 are structurally symmetrical. Please refer to FIG. 25 and FIG. 29 , wherein FIG. 29 shows an enlarged view of one of the full open pivot holes 550. This full open pivot hole 550 comprises two third hook portions 5502, and the two third hook portions 5502 are oppositely arranged to form a third gripping space 5502a. The structures of the other full open pivot holes 550 are the same, but the orientations can be the same or opposite (which can be determined according to the actual operation), which will not be described in detail. FIG. 25

[0086] In addition, as shown in FIG. 27 , the front end of the first hook portion 5462 closer to the bottom plate connecting side of the first support 54 (i.e., the side closer to the bottom plate 52) in the two first hook portions 5462 is arranged at a distance 5462b from the bottom plate connecting side in the short side direction D6, which is greater than the width 5462c of the first hook portion 5462 in the long side direction D5, for example, the distance 5462b is 1 to 4 times the width 5462c, but the actual operation is not limited thereto. This structural design helps to maintain the structural strength of the first hook portion 5462 and the gripping force of the two first hook portions 5462.

[0087] As shown in FIG. 26 ​As shown, the second bracket 16 comprises pivots, for example, the second bracket 56 comprises a first pivot 566, a second pivot 568, and six intermediate pivots 570. In this embodiment, there are six intermediate pivots 570, but the number of intermediate pivots 570 is not limited to six in other embodiments. The six intermediate pivots 570 are arranged between the first pivot 566 and the second pivot 568 along the pivot axis A5. Please also refer to FIG. 24 The first pivot 566, the second pivot 568, and the six intermediate pivots 570 are connected to the first semi-open pivot hole 546, the second semi-open pivot hole 548, and the six fully open pivot holes 550, respectively, so that the first bracket 54 and the second bracket 56 are pivotally connected to each other around the pivot axis A5. As shown, FIG. 24 The first pivot 566 is held by the two first hook portions 5462 in the first holding space 5462a and extends into the first blind hole 5464, the second pivot 568 is held by the two second hook portions 5482 in the second holding space 5482a and extends into the second blind hole 5484, and the intermediate pivot 570 is held by the two third hook portions 5502 in the third holding space 5502a. In the first semi-open pivot hole 546, the first pivot 566 is structurally constrained by the two first hook portions 5462 and the first blind hole 5464 at the same time; the same applies to the second semi-open pivot hole 548 and the second pivot 568. In the fully open pivot hole 550, the intermediate pivot 570 is mainly structurally constrained by the two third hook portions 5502. Therefore, in principle, the connection strength of the first semi-open pivot hole 546 and the first pivot 566 (or the second semi-open pivot hole 548 and the second pivot 568) is greater than that of the fully open pivot hole 550 and the intermediate pivot 570.

[0088] Please refer to FIGS. 24-26 In the first bracket 54, there is a spacing 549a between the bottom of the first blind hole 5464 (of the first semi-open pivot hole 546) and the bottom of the second blind hole 5484 (of the second semi-open pivot hole 548) along the pivot axis A5, and there is a spacing 549b between the opening of the first blind hole 5464 and the opening of the second blind hole 5484 along the pivot axis A5; wherein the first blind hole 5464 and the second blind hole 5484 are FIG. 25The hidden outline in FIG is shown with dashed lines. In the second bracket 56, a spacing 567 is defined between the ends of the first pivot 566 and the second pivot 568 along the pivot axis A5. Spacing 567 is greater than spacing 549b and smaller than spacing 549a. During the actual assembly of the first bracket 54 and the second bracket 56, force can be applied to the second bracket 56 to slightly arch it, reducing the linear distance between the first pivot 566 and the second pivot 568 to less than the linear distance between the first and second half-open pivot holes 546 and 548. Next, the second bracket 56 is maintained arched, and the first and second pivots 566 and 568 of the second bracket 56 are engaged with the first and second half-open pivot holes 546 and 548, respectively. The second bracket 56 is then released. At this point, the intermediate pivot 570 should, in principle, contact the corresponding fully-open pivot hole 550. Next, the second bracket 56 is pressed toward the first bracket 54, so that the intermediate pivot 570 engages with the fully open pivot hole 550. Finally, the first half-open pivot hole 546, the second half-open pivot hole 548, and the fully open pivot hole 550 are fully engaged with the first pivot 566, the second pivot 568, and the intermediate pivot 570, respectively. Furthermore, in the connection structure between the first bracket 54 and the second bracket 56, the first half-open pivot hole 546 and the second half-open pivot hole 548 are located at the outermost sides of the first bracket 54 along the pivot axis A5. Therefore, during the assembly of the first and second brackets 54, 56, the second bracket 56 can deform minimally to allow the first and second pivots 566, 568 to engage with the first and second half-open pivot holes 546 and 548. In other words, this connection structure design balances the ease of assembly of the first and second brackets 54, 56 with the overall connection strength between the first and second brackets 54 and 56. Furthermore, the first half-open pivot hole 546 and the second half-open pivot hole 548 being located at the outermost sides along the pivot axis A5 also help maintain the stability of the pivot connection between the first bracket 54 and the second bracket 56 .

[0089] In addition, if FIGS. 27-29 As shown, in the third embodiment, one side of the two first hooks 5462, the two second hooks 5482 or the two third hooks 5502 in the direction of the pivot axis A5 is open, and the other side has a side wall (perpendicular to the pivot axis A5; for example FIG. 27 Middle side wall 5466, FIG. 28 Middle side wall 5486, FIG. 29 The hooks 5462, 5482, and 5502 are connected to the middle sidewall 5504. This structural design helps increase the structural strength and gripping strength of the hook itself. However, this is not a limitation in practice. For example, the two first hooks 5462, the two second hooks 5482, or the two third hooks 5502 can be modified so that both sides in the direction of the pivot axis A5 are open (i.e., without sidewall connections). This structural design increases their structural flexibility and facilitates assembly with the first pivot 566, the second pivot 568, and the middle pivot 570.

[0090] Referring to FIGS. 22-25 The first bracket 54 has slide shafts and bottom shafts. In this embodiment, the first bracket 54 has six slide shafts 552a, 552b and eight bottom shafts 554, but the number of the slide shafts and the bottom shafts is not limited to this in other embodiments. The six slide shafts 552a, 552b are arranged parallel to the pivot axis A5 and disposed on the first long arms 542, wherein four slide shafts 552a are located between two slide shafts 552b. The slide shafts 552b can be formed as protrusions extending parallel to the pivot axis A5. The first bracket 54 further has a slide hole 553 formed beside each slide shaft 552a. The first bracket 54 is slidably and rotatably connected with the keycap 50 (the slide hook 502) via the slide shafts 552a, 552b, wherein the slide hook 502 extends into the corresponding slide hole 553. In addition, the eight bottom shafts 554 are also arranged parallel to the pivot axis A5 and disposed on the first arms 544. The first bracket 54 further has a bottom hole 555 formed beside each bottom shaft 554. The first bracket 54 is rotatably connected with the bottom plate 52 (the bottom hook 522) via the bottom shafts 554, wherein the bottom shafts 554 are rotatably hooked by the corresponding bottom hook 522, and the bottom hook 522 extends into the corresponding bottom hole 555. Furthermore, the bottom plate 52 further comprises a plurality of stop portions 523. The stop portions 523 limit the first bracket 54 so that the bottom shafts 554 are kept hooked by the corresponding bottom hook 522. In addition, in the third embodiment, the stop portions 523 are disposed in alignment with the first hook portion 5462, the second hook portion 5482 or the third hook portion 5502 in the short direction D6, and this structure can provide structural restraint for the first hook portion 5462, the second hook portion 5482 or the third hook portion 5502, which is conducive to the gripping force of the first hook portion 5462, the second hook portion 5482 or the third hook portion 5502.

[0091] Referring to FIGS. 22-24 and FIG. 26 The second bracket 56 has grab shafts and bottom shafts. In this embodiment, the second bracket 56 has six grab shafts 572 and eight bottom shafts 574, but the number of the grab shafts and the bottom shafts is not limited to this in other embodiments. The six grab shafts 572 and the eight bottom shafts 574 are arranged parallel to the pivot axis A5, the six grab shafts 572 are disposed on the long arms 562, and each second arm 564 is provided with two bottom shafts 574. The second bracket 56 further has a grab hole 573 formed beside each grab shaft 572. The second bracket 56 is rotatably connected with the keycap 50 (the grab hook 504) via the grab shafts 572, wherein the grab hook 504 extends into the corresponding grab hole 573. In addition, the second bracket 56 further has a bottom hole 575 formed beside each bottom shaft 574. The second bracket 56 is slidably and rotatably connected with the bottom plate 52 (the bottom hook 524) via the bottom shafts 574, wherein the bottom shafts 574 are slidably and rotatably hooked by the corresponding bottom hook 524, and the bottom hook 524 extends into the corresponding bottom hole 575.

[0092] Furthermore, please refer to FIG. 22 and FIG. 24 , the key cap 50 has a first long side 50a and a second long side 50b, both of which are parallel to the long side direction D5. In FIG. 24 , the vertical direction Dv5 is perpendicular to the paper surface, so the structural profile shown in the figure is equivalent to the projection of its vertical projection on the paper surface; in addition, the profile of the key cap 50 is shown in dashed lines in FIG. 24 . In the third embodiment, the projection of the sliding hole 553 of the first support 54 on the vertical direction Dv5 has a first distance L5 on the short side direction D6 between the projection of the first long side 50a of the key cap 50 on the vertical direction Dv5, and the projection of the second long side 50b of the key cap 50 on the vertical direction Dv5 has a second distance L6 on the short side direction D6 between the projection of the grabbing hole 573 of the second support 56 on the vertical direction Dv5, the first distance L5 is greater than the second distance L6. This structural configuration provides more space for the structure and actuation design of the sliding shaft 552a of the first support 54. In addition, the shaft diameter of the sliding shaft 552a of the first support 54 is greater than the shaft diameter of the grabbing shaft 572 of the second support 56; this structural configuration helps to increase the stability of the rotation and sliding of the sliding shaft 552a.

[0093] The second support and the first support are pivotally connected around a pivot shaft, and as shown in FIG. 24 , in the third embodiment, the first support 54 and the second support 56 jointly form a dome hole 62 (in which the elastic circular protrusion 60 is accommodated, as shown in FIG. 22 ). For the first support 54 and the second support 56, the dome hole 62 defines a dome hole coverage range R5 on the long side direction D5 (the range is indicated by a chain line in the figure). The first support 54 and the second support 56 do not have structures connected to the key cap 50 and the bottom plate 52 (such as sliding shaft 552a / sliding hole 553, grabbing shaft 572 / grabbing hole 573) within this dome hole coverage range R5. This structural design can avoid weakening the structure of the first support 54 and the second support 56 at this point due to the arrangement of the connecting structure.

[0094] In addition, as shown in FIG. 25 , in the first support 54, the dome hole 62 is formed between the two first support arms 544 (or the two first support arms 544 form the dome hole 62, and the two first support arms 544 are not provided with the second support arm 564, and the two first support arms 544 can be defined as a first sub-support arm and a second sub-support arm, i.e. the first sub-support arm and the second sub-support arm form the dome hole 62 between them). The distance 556 from the bottom hole 555 on the first support arm 544 to the dome hole 62 on the long side direction D5 is greater than or equal to 0.25 times the hole diameter 62a of the dome hole 62 on the long side direction D5. This structural design helps to maintain the structural strength of the support arms (i.e. the aforementioned two first support arms 544) adjacent to the dome hole 62.

[0095] In addition, please refer to FIG. 30 and FIG. 30 ; wherein FIG. 24 is FIG. 30 a left side view, the pivot axis A5 is marked with a cross in the figure, the hidden profile of the first pivot 566 (on the second bracket 56) is also shown with chain lines, the hidden profile of the first blind hole 5464 of the first semi-open pivot hole 546 (on the first bracket 54) coincides with the hidden profile of the first pivot 566, the hidden profile of the bottom hooks 522, 524 (of the bottom plate 52) is shown with chain lines, the hidden profile of the bottom hole 555 (on the first bracket 54) is shown with dotted lines, and the hidden profile of the bottom hole 575 (on the second bracket 56) is also shown with dotted lines. As shown in FIG. 24 , the projection of the first pivot 566 on the long direction D5 (i.e. corresponding to that shown by the hidden profile of the first pivot 566 in the figure) overlaps with the projection of the bottom hook 522 or the bottom hole 555 on the long direction D5 (i.e. corresponding to that shown by the hidden profile of the bottom hook 522 or the bottom hole 555 in the figure); the projection of the first pivot 566 on the long direction D5 overlaps with the projection of the bottom hook 524 or the bottom hole 575 on the long direction D5 (i.e. corresponding to that shown by the hidden profile of the bottom hook 524 or the bottom hole 575 in the figure). This structural configuration reduces the distance from the first pivot 566 to the bottom hooks 522, 524, i.e. reduces the force arm from the first pivot 566 to the bottom hooks 522, 524, which can reduce the degree of deformation of the first bracket 54 and the second bracket 56 when force is transmitted, thereby increasing the stability of the first bracket 54 and the second bracket 56 in operation. The foregoing description also applies to the structural features of the second semi-open pivot hole 548 and the fully open pivot hole 550 on the first bracket 54, the second pivot 568 and the intermediate pivot 570 on the second bracket 56, other bottom hooks 522, 524 on the bottom plate 52, other bottom holes 555 on the first bracket 54, other bottom holes 575 on the second bracket 56, etc., and will not be described in detail.

[0096] In addition, as shown in FIG. 24As shown in the third embodiment, the connection structure of the first bracket 54 and the second bracket 56 is illustrated by the chain line frame in the figure. Here, the sliding shaft 552a, sliding hole 553, fully open pivot hole 550, bottom shaft 554, and bottom hole 555 of the first bracket 54 are relatively adjacent to the grasping shaft 572, grasping hole 573, intermediate pivot shaft 570, bottom shaft 574, and bottom hole 575 of the second bracket 56. Through the aforementioned structure, the first bracket 54 and the second bracket 56 transmit force and coordinate between them, and between the keycap 50 and the base plate 52. The relative concentration of the aforementioned structures on the pivot axis A5 helps reduce the torque component perpendicular to the pivot axis A5 during force transmission. This promotes stable coordination between the first bracket 54 and the second bracket 56, and between the keycap 50 and the base plate 52, thereby increasing the stability of the operation of the first bracket 54 and the second bracket 56. In the second embodiment, the projections of the bottom hole 555 and the sliding hole 552a of the first bracket 54 and the gripping hole 573 of the second bracket 56 in the vertical direction Dv5 overlap with each other in the short side direction D6; FIG. 24 In the figure, the vertical direction Dv5 is perpendicular to the paper, so the structural outline shown in the figure corresponds to its vertical projection onto the paper. Furthermore, in the third embodiment, the projections of the sliding hole 552a and the fully open pivot hole 550 of the first bracket 54, and the gripping hole 573 of the second bracket 56 along the vertical direction Dv5 also overlap along the short-side direction D6. Furthermore, in the third embodiment, the first bracket 54 and the second bracket 56 have multiple adjacent connecting structures that also exhibit the aforementioned overlapping projection characteristics, thus providing corresponding functionalities. This description will not be elaborated upon.

[0097] In addition, if FIG. 25As shown, for the first bracket 54 and the second bracket 56, the arm coverage range R6 (its range is indicated by chain lines in the figure) is defined in the long direction D5 by the two first arms 544 of the first bracket 54 that are immediately adjacent to the dome hole 62 (or said two first arms 544 form the dome hole 62, and no second arm 564 is arranged between the two first arms 544). The arm coverage range R6 covers the dome hole 62, the first bracket 54 and the second bracket 56, and a plurality of connection structures in the first bracket 54 (including the two slide shafts 552 / slide holes 553, the two bottom shafts 554 / bottom holes 555, and the two fully open pivot holes 550) and the second bracket 56 (including the two catch shafts 572 / catch holes 573, and the two intermediate pivot shafts 570). The number of the connection structures in the arm coverage range R6 is a certain value (for example, but not limited to, greater than or equal to 8. In an embodiment, the first bracket includes a plurality of first connection portions in the arm coverage range R6, the first bracket is connected to the second bracket and the keycap and the bottom plate of the long rectangular key structure through the plurality of first connection portions, the second bracket includes a plurality of second connection portions in the arm coverage range R6, the second bracket is connected to the first bracket and the keycap and the bottom plate of the long rectangular key structure through the plurality of second connection portions, and the number of the plurality of first connection portions and the plurality of second connection portions is greater than or equal to 8; in a third embodiment, the number of the connection structures is 10), which can increase the structural strength of the first bracket 54 and the second bracket 56 at this position (in another aspect, compensate for the decrease in the structural strength of the first bracket 54 and the second bracket 56 due to the existence of the dome hole 62), improve the transmission effect (including transmission along the pivot axis A5) of the first bracket 54 and the second bracket 56 at this position, and further increase the stability of the first bracket 54 and the second bracket 56.

[0098] In addition, as FIG. 26 and ​As shown, the first arms 544 (i.e. the first and second sub-arms) adjacent to the dome hole 62 have a width 544a along the lengthwise direction D5 and a length 544b perpendicular to the lengthwise direction D5, the width 544a being 0.8 to 2 times the length 544b. This structural design helps maintain the structural strength of the first arms 544 to a certain extent. Also, the two second arms 564 (which can be defined as third and fourth sub-arms) adjacent to the two first arms 544 have a width 564a along the lengthwise direction D5 and a length 564b perpendicular to the lengthwise direction D5, the width 564a also being 0.8 to 2 times the length 564b. In other words, in the lengthwise direction, the first and second sub-arms are located between the third and fourth sub-arms, and each of the first to fourth sub-arms has a width along the lengthwise direction D3 and a length perpendicular to the lengthwise direction D3, the width being 0.8 to 2 times the length. Similarly, this structural design helps maintain the structural strength of the second arms 564 to a certain extent. In addition, there are two second arms 564 adjacent to the two first arms 544, and the two second arms 364 are located outside the two first arms 544 along the pivot axis A5.

[0099] The utility model discloses still can have other various embodiments, under the condition of not departing from the utility model spirit and its essence, the skilled person of this field can make various corresponding changes and deformation according to the utility model, but these corresponding changes and deformation all should belong to the protection scope of the utility model attached claim.

Claims

1. A keycap lifting mechanism for a long rectangular key structure having a long side direction and a short side direction, characterized by The keycap lifting mechanism comprises: a bottom plate comprising a bottom hook; a first support comprising a bottom shaft rotatably held by the bottom hook, a bottom hole formed beside the bottom shaft, a sliding shaft, and a sliding hole formed beside the sliding shaft, the bottom hook extending into the bottom hole, the first support being slidably and rotatably connected with the keycap of the long-rectangular key structure via the sliding shaft and the sliding hole; and a second support pivotally connected with the first support about a pivot shaft parallel to the long-side direction, the second support comprising a grabbing shaft and a grabbing hole formed beside the grabbing shaft, the second support being rotatably connected with the keycap of the long-rectangular key structure via the grabbing shaft and the grabbing hole; wherein the projections of the bottom hole, the sliding hole, and the grabbing hole in a vertical direction overlap each other in the short-side direction.

2. The keycap lift mechanism of claim 1, wherein, The first support comprises a pivot hole, the second support comprises a pivot shaft inserted into the pivot hole to allow the first support and the second support to rotate relative to each other about the pivot shaft, and the projections of the pivot hole, the sliding hole, and the grabbing hole in the vertical direction overlap each other in the short-side direction.

3. A keycap lifting mechanism for a long rectangular key structure having a long side direction and a short side direction, characterized by The keycap lifting mechanism comprises: a first support comprising a pivot hole, a sliding shaft, and a sliding hole formed beside the sliding shaft, the first support being slidably and rotatably connected with the keycap of the long-rectangular key structure via the sliding shaft and the sliding hole; and a second support comprising a pivot shaft, a grabbing shaft, and a grabbing hole formed beside the grabbing shaft, the second support being rotatably connected with the keycap of the long-rectangular key structure via the grabbing shaft and the grabbing hole, the pivot shaft being inserted into the pivot hole to allow the first support and the second support to rotate relative to each other about a pivot shaft parallel to the long-side direction; wherein the projections of the pivot hole, the sliding hole, and the grabbing hole in a vertical direction overlap each other in the short-side direction.

4. A keycap lifting mechanism for a long rectangular key structure having a long side direction and a short side direction, characterized by The keycap lifting mechanism comprises: a first support; and a second support pivotally connected with the first support about a pivot shaft, the first support and the second support collectively forming a dome hole; wherein, for the first support and the second support, a dome hole coverage range is defined in the long-side direction with the dome hole as a boundary; wherein the first support and the second support do not have structures connected with the keycap of the long-rectangular key structure and the bottom plate within the dome hole coverage range. The first support comprises a support body and a reinforcing member embedded in the support body, and the reinforcing member passes through the sliding shaft.

5. The keycap lift mechanism of any one of claims 1, 3, 4, wherein, The reinforcing member surrounds the sliding hole.

6. The keycap lift mechanism of claim 5, wherein, The shaft diameter of the sliding shaft is greater than the shaft diameter of the grabbing shaft.

7. The keycap lift mechanism of any one of claims 1, 3, 4, wherein, The keycap lifting mechanism comprises:

8. A keycap lifting mechanism for a long rectangular key structure having a long side direction and a short side direction, characterized by a first support comprising a long arm extending parallel to the long-side direction, a first sub-support arm, and a second sub-support arm protruding and extending from the long arm non-parallel to the long-side direction, a dome hole being formed between the first sub-support arm and the second sub-support arm; and a second support pivotally connected with the first support about a pivot shaft; wherein, for the first support and the second support, a support arm coverage range is defined in the long-side direction with the first sub-support arm and the second sub-support arm as a boundary. ​ The first support includes a plurality of first connecting portions within the coverage of the support arm, the first support is connected with the second support and the keycap and the bottom plate of the long rectangular key structure through the plurality of first connecting portions, the second support includes a plurality of second connecting portions within the coverage of the support arm, the second support is connected with the first support and the keycap and the bottom plate of the long rectangular key structure through the plurality of second connecting portions, the number of the plurality of first connecting portions and the plurality of second connecting portions is greater than or equal to 8.

9. The keycap lift mechanism of claim 8, wherein, The first sub-support arm and the second sub-support arm each have a width along the long direction and a length perpendicular to the long direction, the width is 0.8 to 2 times the length.

10. A keycap lifting mechanism for a long rectangular key structure having a long side direction and a short side direction, characterized by The keycap lifting mechanism includes: A first support including a first long arm, a first sub-support arm and a second sub-support arm, the first long arm extends parallel to the long direction, the first sub-support arm and the second sub-support arm protrude and extend from the first long arm non-parallel to the long direction, a dome hole is formed between the first sub-support arm and the second sub-support arm; And A second support, the first support and the second support are pivotally connected to each other around a pivot axis, the first support includes a second long arm, a third sub-support arm and a fourth sub-support arm, the second long arm extends parallel to the long direction, the third sub-support arm and the fourth sub-support arm protrude and extend from the second long arm non-parallel to the long direction; Wherein, in the long direction, the first sub-support arm and the second sub-support arm are located between the third sub-support arm and the fourth sub-support arm; Wherein, each of the first sub-support arm to the fourth sub-support arm has a width along the long direction and a length perpendicular to the long direction, the width is 0.8 to 2 times the length.

11. The keycap lift mechanism of any one of claims 8, 10, wherein, The first support includes a support body and a reinforcing member embedded in the support body, the first support has a sliding shaft and a sliding hole formed beside the sliding shaft, the reinforcing member passes through the sliding shaft, the first support is slidably and rotatably connected with the keycap of the long rectangular key structure through the sliding shaft.

12. The keycap lift mechanism of claim 11, wherein, The reinforcing member surrounds the sliding hole.

13. The keycap lift mechanism of any one of claims 8, 10, wherein, The first support has a sliding shaft and a sliding hole formed beside the sliding shaft, the second support has a grabbing shaft and a grabbing hole formed beside the grabbing shaft, the shaft diameter of the sliding shaft is greater than the shaft diameter of the grabbing shaft, the first support is slidably and rotatably connected with the keycap of the long rectangular key structure through the sliding shaft, the second support is rotatably connected with the keycap of the long rectangular key structure through the grabbing shaft.

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