TW201812816A - Key structure with mechanical switch and mechanical switch thereof - Google Patents

Abstract

A key structure with mechanical switch includes a keycap, a base board, an elevation unit, a receiving housing, a guiding outer cylinder, a rotating inner cylinder and an elastic element. The base board is disposed under the keycap. The elevation unit is disposed between the keycap and the base board to guide the keycap up or down along a pressing direction. The receiving housing has a plurality of sectional boards which are arranged in an annular manner and a plurality of sectional cutout between the sectional boards at intervals. The guiding outer cylinder is movably received in the receiving housing along the pressing direction of keycap, and abuts against a bottom surface of the keycap. The guiding outer cylinder has a plurality of positioning bumps protruded outward therefrom, and a plurality of concaved ports. The rotating inner cylinder is received in the guiding outer cylinder and has a plurality of sliding bumps. The elastic element is located in the rotating inner cylinder to provide elasticity toward the keycap. The invention also provides a mechanical switch.

Description

Button structure with mechanical switch and its mechanical switch

The invention relates to a button structure with a mechanical switch and a mechanical switch thereof, in particular to a signal input or a command by means of a mechanical switch with a mechanical switch, which can be applied to a computer keyboard.

The keyboard is already a very popular computer peripheral device, which can be divided into "mechanical keyboard" and "thin film keyboard". The membrane keyboard is provided with a scissor foot support, an elastic element, and a thin film circuit layer under the key cap at the bottom of the keyboard. After the keycap is pressed, the elastic element is driven by the keycap and triggers the thin film circuit layer downward to generate a signal, that is, an output signal is completed. The disadvantage of the membrane keyboard is that when the trigger circuit under the single button is damaged, the membrane circuit layer must be replaced or even impossible to repair, and cannot be replaced for a single button. The handling feel depends on the elastic element, and the short stroke of the button results in a poor hand feel and is inferior to the mechanical keyboard.

The "mechanical keyboard" is mainly a mechanical switch (switch) to trigger the signal. It is characterized by the feel of the button when tapped, and durability.

At present, a common mechanical keyboard usually has a spring below the intermediate shaft and is a spring-type structure. Its height is usually higher than the "film keyboard". In addition, the elastic curve of the pressing curve is a downward point to the bottom of the valley as an Operating Point after crossing the Peak Point, and then gradually increases in a diagonal line. The feel is less obvious than the paragraph.

The technical problem to be solved by the present invention is to provide a mechanical switch structure which can reduce the overall height of the mechanical switch structure and improve the stability of its operation.

The technical problem to be solved by the present invention is also to provide a mechanical switch structure which can provide a more obvious paragraph feel of the mechanical switch structure.

In order to solve the above technical problem, according to one aspect of the present invention, a button structure having a mechanical switch includes a keycap, a substrate, a lifting unit, a receiving housing, a guiding outer tube, and a guiding structure. Rotating the inner cylinder and an elastic element. The substrate is placed under the keycap and has an opening. The lifting unit is disposed between the keycap and the substrate to guide the keycap to rise or fall along a pressing direction. The accommodating case is located under the substrate, and the accommodating case has a plurality of segment plates arranged in an annular shape, and a plurality of segment recessed regions formed at intervals between the plurality of segment plates. The guiding outer tube is movably received in the accommodating case along the pressing direction of the key cap, and the guiding outer tube protrudes from the opening and abuts against the bottom surface of the key cap. Wherein the guiding outer cylinder has an outer cylinder body, a plurality of positioning protrusions protruding outward from a bottom of the outer cylinder body, and a plurality of recesses formed at intervals between the plurality of positioning protrusions unit. The guiding outer cylinder has a hollow receiving space facing downward. The rotating inner cylinder is received in the hollow receiving space of the guiding outer cylinder, the rotating inner cylinder has an inner cylinder body and a plurality of sliding protrusions protruding outward from the bottom of the inner cylinder body . The elastic member is located at a bottom end of the rotating inner cylinder to provide an elastic force of the rotating inner cylinder toward the keycap. Where the keycap is not pressed, the plurality of sliding protrusions are correspondingly located at the bottom end of the plurality of positioning protrusions and located in the plurality of segment recessed regions; wherein the keycap is pressed And the plurality of positioning protrusions are separated from the plurality of segment recessed areas along the pressing direction, and the plurality of sliding protrusions are correspondingly slid to the plurality of recesses by the bottom ends of the plurality of positioning protrusions Inside the docking portion; wherein the plurality of sliding protrusions are slid from the bottom surface of the plurality of position plates to the bottom ends of the plurality of positioning protrusions after the keycap is released.

In order to solve the above technical problem, according to one aspect of the present invention, a mechanical switch includes a receiving housing, a guiding outer cylinder, a rotating inner cylinder, and an elastic member. The accommodating case has a plurality of segment plates arranged in an annular shape, and a plurality of segment recessed regions formed at intervals between the plurality of segment plates. The guiding outer tube is movably received in the accommodating case along a pressing direction, and the guiding outer tube abuts against a bottom surface of the key cap; wherein the guiding outer tube has an outer tube a body, a plurality of positioning protrusions protruding outward from a bottom of the outer tube body, and a plurality of recessed stops formed at intervals between the plurality of positioning protrusions; the guiding outer tube has a facing Hollow accommodating space under. The rotating inner cylinder is received in the hollow receiving space of the guiding outer cylinder, the rotating inner cylinder has an inner cylinder body and a plurality of sliding protrusions protruding outward from the bottom of the inner cylinder body . The elastic member is located at a bottom end of the rotating inner cylinder to provide an elastic force of the rotating inner cylinder toward the guiding outer cylinder. Where the guiding outer cylinder is not pressed, the plurality of sliding protrusions are correspondingly located at the bottom ends of the plurality of positioning protrusions and located in the plurality of segment recessed regions; wherein the guiding outer portions When the tube is pressed, the plurality of positioning protrusions are separated from the plurality of segment recessed areas along the pressing direction, and the plurality of sliding protrusions are correspondingly slid by the bottom ends of the plurality of positioning protrusions to the The plurality of recessed stops are disposed; wherein the plurality of sliding protrusions are slid by the bottom surfaces of the plurality of position plates to the bottom ends of the plurality of positioning protrusions after the guide outer cylinder is released.

The invention has the following beneficial effects: in the process of being pressed and released by the key cap, the rotating inner cylinder slides along the bottom surface of the position plate along the guiding outer cylinder, wherein the sliding protrusion is at the bottom of the positioning protrusion The end and the segment depression zone are alternately slid, thereby providing a more pronounced sense of the feel of the paragraph. The paragraph pressure of the button pressure of this embodiment is approximately equal to 50% of CR%.

In order to further understand the technology, method and effect of the present invention in order to achieve the intended purpose, reference should be made to the detailed description and drawings of the present invention. However, the drawings and the annexes are provided for reference and description only, and are not intended to be used in the present invention. Limiter.

10‧‧‧Key Cap

11, 12‧‧‧ Connection Department

20‧‧‧Substrate

21‧‧‧Substrate body

210‧‧‧ openings

23a, 23b‧‧‧Restrictions

30‧‧‧ Lifting unit

31‧‧‧ first frame

311, 312‧‧‧ first shaft

321, 322‧‧‧ second shaft

32‧‧‧second framework

40‧‧‧ boards

50‧‧‧ housing

51‧‧‧Upper casing

52, 52'‧‧‧ lower casing

520‧‧‧through hole

521‧‧‧Protruding Positioning Department

524‧‧‧卡合块

526‧‧‧ Identifying the bump

53‧‧‧ Segment board

530‧‧‧Segment depression

531‧‧‧ first side

532‧‧‧Bottom bevel

533‧‧‧Second side

55‧‧‧ Guide ribs

56‧‧‧ring top

57‧‧‧The outer edge

570‧‧‧Snap hole

59‧‧‧ escaping holes

60‧‧‧Guided outer tube

61‧‧‧Outer tube body

62‧‧‧ positioning bump

621‧‧‧Extended slope

622‧‧‧Lower bevel

63‧‧‧ guiding groove

64‧‧‧ recessed dock

70‧‧‧Rotating inner cylinder

71‧‧‧Inner tube body

72‧‧‧Sliding projections

722‧‧‧Upper slope

80‧‧‧Flexible components

90‧‧‧ Trigger Module

91‧‧‧ containment shell

93‧‧‧Spring

92‧‧‧Touching Department

1 is an exploded perspective view of a key structure of a mechanical switch of the present invention.

1A is an exploded perspective view of a mechanical switch of the present invention.

2 is another perspective exploded view of the key structure of the mechanical switch of the present invention.

2A is another perspective exploded view of the mechanical switch of the present invention.

3 is an exploded perspective view of the keycap, the lifting unit, and the mechanical switch of the present invention.

4 is a cross-sectional view showing the key structure of the mechanical switch of the present invention without pressing the keycap.

Figure 5 is a cross-sectional view showing the key structure of the mechanical switch having the mechanical switch of the present invention pressed.

Fig. 6 is a graph showing the elastic force of the key structure of the mechanical switch according to the present invention during pressing.

Fig. 7 is a cross-sectional view showing the key structure and the conduction mechanism of the mechanical switch of the present invention.

[First Embodiment]

Please refer to FIG. 1 to FIG. 2A , wherein FIG. 1 and FIG. 2 are exploded perspective views of a key structure of a mechanical switch according to the present invention, and FIGS. 1A and 2A are exploded perspective views of the mechanical switch of the present invention. The key structure of the mechanical switch of the present invention comprises a keycap 10, a substrate 20 is placed under the keycap 10, a lifting unit 30, a receiving housing 50, a guiding outer cylinder 60, and a rotation. The cartridge 70 and an elastic member 80. The accommodating case 50, the guide outer tube 60, the rotating inner tube 70, and the elastic member 80 constitute the mechanical switch of the present invention.

The substrate 20 of the present embodiment may be stamped from a metal plate. The substrate 20 has a substrate body 21 and a plurality of restricting portions 23a, 23b that are bent upward by the substrate body 21 and protrude toward the keycap 10. The substrate 20 has an opening 210 formed on the substrate body 21.

As shown in FIG. 2, the lifting unit 30 of the embodiment is a scissor structure and is placed. The keycap 10 and the substrate 20 are used to guide the keycap 10 to rise or fall along a pressing direction (in the vertical direction of FIG. 1). The bottom surface of the keycap 10 has a plurality of connecting portions 11, 12. The lifting unit 30 has a first frame 31 and a second frame 32 rotatably coupled to the first frame 31. The two sides of the first frame 31 and the two sides of the second frame 32 are connected to the plurality of restricting portions 23a and 23b and the plurality of connecting portions 11 and 12. As shown in FIG. 1 , the upper and lower sides of the first frame 31 respectively have a plurality of first shaft portions 311 and 312 respectively pivotally connected to the connecting portion 11 of the keycap 10 and the restricting portion 23b of the substrate 20; Each of the upper and lower sides of the second frame 32 has a plurality of second shaft portions 321 and 322 respectively pivotally connected to the connecting portion 12 of the keycap 10 and the regulating portion 23a of the substrate 20. Thereby, the present embodiment can reduce the overall height of the mechanical switch structure and improve the stability of its operation.

Referring to FIG. 1A , in this embodiment, the accommodating case 50 is located under the substrate 20 , and the accommodating case 50 has a plurality of segment plates 53 arranged in an annular shape and a plurality of intervals formed on the plurality of A segment recessed region 530 between the segment plates 53. This embodiment has four segment plates 53, however the number is not limited thereto, and may be at least two or more. The accommodating case 50 of this embodiment has an upper case 51 and a lower case 52. The upper casing 51 has an outer edge portion 57 that is engaged with the lower casing 52. In this embodiment, the outer edge portion 57 forms a plurality of engaging holes 570, and the outer surface of the lower casing 52 forms a plurality of engaging blocks 524, and the plurality of engaging blocks 524 are correspondingly engaged therein. A plurality of engaging holes 570 are described.

Please refer to FIG. 3. FIG. 3 is a perspective view showing the mechanical switch of the present invention and the substrate 20 and the circuit board 40. A circuit board 40 can be placed on the bottom surface of the substrate 20. As shown in FIG. 2, the lower casing 52 has a plurality of projections 526 that sandwich the substrate 20 and the circuit board 40 together with the plurality of engagement blocks 524, as shown in the cross-sectional view of FIG.

The upper casing 51 of the present embodiment includes the outer edge portion 57, a plurality of the land plates 53, and an annular top portion 56 connecting the outer edge portion 57 and the plurality of the land plates 53. An annular top 56 covers the top edge of the lower housing 52. A plurality of the position plate 53 are located inside the outer edge portion 57 in parallel with the outer edge portion 57. The annular top 56 is substantially vertical The segment plate 53 and the outer edge portion 57.

As shown in FIG. 1A and FIG. 2A, each of the position plates 53 has a first side 531, a second side 533, and a bottom connecting the first side 531 and the second side 533. Bevel 532, wherein the first side 531 is shorter than the second side 533.

The guiding outer tube 60 is movably received in the accommodating case 50 along the pressing direction of the keycap 10, and the guiding outer tube 60 protrudes from the opening 210 of the substrate 20 and abuts the key The bottom surface of the cap 10. The guiding outer cylinder 60 has an outer cylinder body 61, a plurality of positioning protrusions 62 projecting outward from the bottom of the outer cylinder body 61, and a plurality of recessed stops formed between the plurality of positioning protrusions 62 at intervals Department 64. The guide outer cylinder 60 is substantially cylindrical and has a hollow receiving space facing downward (see FIG. 2A, not labeled). This embodiment has four positioning projections 62 and four recessed parking portions 64, however the number is not limited thereto, and may be at least two or more. The four positioning projections 62 are arranged at equal angles and equidistant distances and are located on the same plane.

As shown in FIG. 2 and FIG. 2A, the lower casing 52 forms a plurality of relief holes 59, and the positions of the plurality of relief holes 59 correspond to the plurality of positioning projections 62 of the guiding outer cylinder 60.

As shown in FIGS. 1A and 2A, the guide outer cylinder 60 of the present embodiment moves in the pressing direction without rotating. The inner surface of each of the bit plates 53 forms a guiding rib 55 parallel to the pressing direction, and the outer surface of the guiding outer tube 60 forms a plurality of guiding grooves 63 in the parallel pressing direction to correspondingly receive a plurality of The guiding rib 55 is described. Preferably, the guiding rib 55 is adjacent to the second side 533 of the position plate 53. Since the second side 533 is long, a longer guiding rib 55 may be provided. The guiding rib 55 is substantially semi-cylindrical.

The rotary inner cylinder 70 is housed in the hollow accommodation space of the guide outer cylinder 60, and the rotary inner cylinder 70 can be moved in the guide outer cylinder 60 in the pressing direction or can be rotated. The rotary inner cylinder 70 has an inner cylinder body 71 and a plurality of sliding projections 72 projecting outward from the bottom of the inner cylinder body 71. This embodiment has four sliding projections 72, however the number is not limited thereto and may be at least two or more. Four sliding projections 72 are isometric Degrees and equidistant alignment, and located on the same plane.

The elastic member 80 is located at the bottom end of the rotating inner cylinder 70 to provide an elastic force of the rotating inner cylinder 70 toward the keycap 10. The elastic member 80 of this embodiment is a compression spring. A bottom positioning portion 521 is provided at the bottom of the lower casing 52 to position the elastic member 80.

Please refer to FIG. 4 and FIG. 5 , which are cross-sectional views of the button structure with the mechanical switch and the pressed key cap and the pressed key cap respectively. As shown in FIG. 4, when the keycap 10 is not pressed, it can also be considered that when the guide outer cylinder 60 is not pressed, the plurality of sliding projections 72 are correspondingly located at the bottom of the plurality of positioning projections 62. And being located within the plurality of segment recessed regions 530.

As shown in FIG. 5, in the detailed structure of the embodiment, the bottom of the positioning protrusion 62 of the guiding outer tube 60 has a lower inclined surface 622, and the lower inclined surface 622 is inclined with respect to the pressing direction. The top of the sliding protrusion 72 of the rotating inner cylinder 70 has an upper inclined surface 722 which is inclined with respect to the pressing direction, and the upper inclined surface 722 abuts against the lower inclined surface 622.

When the keycap 10 is pressed, it can also be considered that when the guide outer cylinder 60 is pressed, especially when the sliding projection 72 of the rotating inner cylinder 70 is guided downward by the positioning projection 62 of the outer cylinder 60 to the above The two sides 533 are abutting the oblique thrust generated by the lower inclined surface 622 by the upper inclined surface 722, and the plurality of positioning protrusions 62 are separated from the plurality of segment recessed areas 530 along the pressing direction, The sliding projections 72 are correspondingly slid by the bottom ends of the plurality of positioning projections 62 into the plurality of recessed seating portions 64 of the guide outer cylinder 60. At this time, the positions of the plurality of sliding protrusions 72 are temporarily located below the bottom oblique sides 532 of the plurality of position plates 53.

After the keycap 10 is released, the rotating inner cylinder 70 and the guiding outer cylinder 60 are pushed upward by the force of the elastic member 80 located inside the rotating inner cylinder 70, and a plurality of sliding projections 72 are recovered during the upward recovery. First, the bottom bevel 532 of the plurality of land plates 53 is touched, the outer cylinder 60 is guided to continue upward, and the plurality of positioning projections 62 are returned to the plurality of segment recessed regions 530. The plurality of sliding tabs 72 then exit the plurality of recessed stops 64 and slide along a plurality of bottom beveled edges 532, the plurality of sliding projections 72 is slid to the bottom end of the plurality of positioning projections 62 by the bottom surface of the plurality of segment plates 53, that is, the bottom bevel 532. Go back to the state shown in Figure 4.

Referring to FIG. 4 , in the present embodiment, the guiding outer cylinder 60 has an extending inclined surface 621 extending from the lower inclined surface 622 to the recessed stopping portion 64 . Wherein, when the keycap 10 is released, the bottom bevel 532 of the segment plate 53, the lower bevel 622 of the positioning protrusion 62, and the extended bevel of the guiding outer tube 60 621 is located substantially on the same slope or the same curved surface. Therefore, the sliding projections 72 smoothly move in the same arc surface as described above.

Please refer to FIG. 6 , which is a graph showing the elastic force of the button structure of the mechanical switch during pressing according to the embodiment. The button is changed by the action of the finger force and can be expressed using the elastic curve. The horizontal axis (or X-axis) of the elastic curve represents the stroke distance (Stroke) of the pressed button action, and the unit is mm; the vertical axis (or the Y-axis) represents the force (Force) to be pressed by the finger. The unit is gf (gram weight). Where O is the starting point (Original Point); P is the Peak Point; C is the Contact Point; and E is the End Point. One of the features of the present invention is that the rotating inner cylinder 70 slides along the bottom surface of the position plate 53 along the guide outer cylinder 60 during the process of being pressed and released by the keycap 10, thereby providing a more pronounced sense of passage. The feel of the press.

The peak point P and the contact point C in Fig. 6 affect the pressing feel of the mechanical switch structure. The starting point O corresponds to the keycap 10 not being pressed, corresponding to a stroke distance of 0 mm; the peak point P corresponds to a pressing stroke in which the keycap 10 is pressed to a maximum force, corresponding to a stroke distance of about 1.3 mm, in this embodiment About two-thirds of the total stroke. The elastic force curve from the starting point O to the peak point P changes substantially linearly, and the process mainly overcomes the resistance of the elastic member 80, similar to the elastic force diagram of the compression spring.

Referring to FIG. 4 at the same time, during the process of pressing the keycap 10, the guiding outer cylinder 60 is simultaneously pushed downward, and the stroke is also equivalent to the displacement distance of the positioning protrusion 62 moving downward along the second side 533. From the above, it is known that the longer the length of the second side 533, the more the elastic member 80 is compressed, while generating a greater elastic force. Thereby, the embodiment The peak point P can be adjusted by changing the design length of the second side 533. The force value of the peak point P of this embodiment can also be adjusted by the elastic modulus of the elastic member 80.

Referring to FIG. 6, in the present embodiment, the pressing stroke from the peak point P to the contact point C is significantly reduced by the user's finger, and the contact point C corresponds to a stroke distance of about 1.6 mm. Referring to FIG. 4 at the same time, when the sliding protrusion 72 is pushed down by the guiding outer tube 60 until it passes over the second side 533 of the position plate 53, the sliding protrusion 72 is along the bottom of the positioning protrusion 62. The end starts to slide. First, the corners of the second side 533 and the bottom bevel 532 are slid, and then, as shown in FIG. 5, the sliding protrusion 72 slides into the recessed rest 64 of the guide outer cylinder 60. During the process, the keycap 10 is still pressed down continuously, about one third of the pressing stroke is continued until the entire pressing stroke is completed, as shown in FIG. 5, at this time, a conduction circuit is touched (for example, as exemplified), that is, Equivalent to contact point C. The elastic member 80 is released in a short time, and the length of the recovery of the elastic member 80 is offset by the vertical displacement of the sliding projection 72, and the elastic force of the elastic member 80 felt by the user's finger is reduced in a short time, resulting in a distinct passage. sense.

As described above, in the present embodiment, the curve of the peak point P to the contact point C and the sense of the paragraph of the pressing can be adjusted by changing the slope and length of the extending slope 621 of the guide outer cylinder 60.

Referring to FIG. 6, the stroke after the contact point C corresponds to the process in which the user's finger leaves the keycap 10. Referring to FIG. 4 at the same time, the elastic member 80 pushes the rotating inner cylinder 70, the guiding outer cylinder 60, and the keycap 10 upward to return to the unpressed position.

The pressing feel can generally be measured by objective pressure data as follows. The button ratio of the button pressure (Snap ratio or Click ratio, or CR%) formula = {Peak Force - Contact Force} / peak strength * 100%.

The paragraph pressure of the present embodiment is about 50% greater than CR%, providing a clear sense of paragraph. In contrast, the traditional mechanical switch usually has a compression spring inside, which is a spring-type structure, and its elastic curve curves from the peak point to the contact point. Then it is slanted and then gradually increases the resistance, and the hand feels less obvious.

[Second embodiment]

Please refer to FIG. 7, which is a schematic diagram of a conduction mechanism of the button structure of the mechanical switch of the embodiment. The embodiment is different from the above embodiment in that the rotating inner cylinder 70 is hollow and accommodates a triggering module 90, and a bottom of the housing 52' is formed with a through hole 520. The trigger module 90 does not protrude from the through hole 520 corresponding to the state in which the keycap 10 is not pressed; wherein a portion of the trigger module 90 protrudes corresponding to a state in which the keycap 10 is pressed The through hole 520 is formed to touch a conductive film (not shown) located at the bottom of the mechanical switch to generate a conduction number.

More specifically, the trigger module 90 includes a receiving case 91, a spring 93 received in the receiving case 91, and a touch portion 92 movably received in the receiving case 91 and abutting The spring 93 has a portion of the touch portion 92 protruding from the bottom surface of the receiving case 91.

The feature and function of the present invention is that, in the process of being pressed and released by the keycap 10, the rotating inner cylinder 70 slides along the bottom surface of the position plate 53 along the guiding outer cylinder 60, wherein the sliding protrusion is The bottom end of the positioning protrusion and the segment depression area are alternately slid, thereby providing a more pronounced feeling of pressing of the paragraph. The paragraph pressure of the button pressure of this embodiment is approximately equal to 50% of CR%.

In addition, the present invention can provide a thinner key structure having a mechanical switch, and the overall height can be less than 7 mm.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

Claims (22)

A button structure having a mechanical switch, comprising: a key cap; a substrate disposed under the key cap, the substrate having an opening; and a lifting unit disposed between the key cap and the substrate Or guiding the keycap to rise or fall along a pressing direction; a receiving case is located under the substrate, the receiving case has a plurality of annular plates arranged in a ring shape, and a plurality of intervals are formed a guiding recessed portion between the plurality of segment plates; a guiding outer cylinder movably received in the receiving housing along a pressing direction of the key cap, the guiding outer cylinder protruding from the Opening and abutting against a bottom surface of the keycap; wherein the guiding outer cylinder has an outer cylinder body, a plurality of positioning protrusions protruding outward from a bottom of the outer cylinder body, and a plurality of spaced apart formations a recessed parking portion between the plurality of positioning protrusions; the guiding outer tube has a downwardly facing hollow receiving space; and a rotating inner tube is received in the hollow receiving space of the guiding outer tube The rotating inner cylinder has an inner cylinder body and a plurality of inner cylinders a sliding protrusion protruding outwardly from the bottom of the body; a resilient member located at a bottom end of the rotating inner cylinder to provide an elastic force of the rotating inner cylinder toward the keycap; wherein the keycap is not pressed, more The sliding protrusions are correspondingly located at a bottom end of the plurality of positioning protrusions and located in a plurality of the position depression areas; wherein when the keycap is pressed, a plurality of the positioning protrusions are along The pressing direction is away from the plurality of the segment recessed regions, and the plurality of sliding protrusions are correspondingly slid into the plurality of the recessed stops by the bottom ends of the plurality of positioning protrusions; wherein the keycap is released, A plurality of the sliding protrusions are slid by a bottom surface of the plurality of the position plates to a bottom end of the plurality of positioning protrusions. The key structure of the mechanical switch according to claim 1, wherein the accommodating case has an upper case and a lower case, and the upper case has an outer edge portion engaged with the lower case A plurality of the position plates are located inside the outer edge portion in parallel with the outer edge portion. The button structure with a mechanical switch according to claim 2, wherein the outer edge portion forms a plurality of engaging holes, and the outer surface of the lower case forms a plurality of engaging blocks, the plurality of engaging blocks Correspondingly, the plurality of engaging holes are engaged. The key structure of the mechanical switch according to claim 2, wherein the lower casing forms a plurality of escape holes, and the positions of the plurality of escape holes correspond to the plurality of positioning protrusions of the guiding outer cylinder Piece. The key structure of the mechanical switch according to claim 2, wherein an inner surface of each of the position plates forms a guiding rib parallel to the pressing direction, and an outer surface of the guiding outer tube forms a plurality of The guiding groove correspondingly receives a plurality of the guiding ribs. The button structure with a mechanical switch according to claim 1, wherein a bottom of the positioning protrusion of the guiding outer cylinder has a lower inclined surface, and the lower inclined surface is inclined with respect to the pressing direction, The top of the sliding protrusion of the rotating inner cylinder has an upper inclined surface which is inclined with respect to the pressing direction, and the upper inclined surface abuts against the lower inclined surface. The button structure with a mechanical switch according to claim 6, wherein the guiding outer cylinder has an extending slope, and the extending slope extends to the recessed parking portion due to the lower inclined surface. The button structure with a mechanical switch according to claim 7, wherein each of the segment plates has a first side, a second side, and a first side and a second side a bottom bevel, wherein the first side is shorter than the second side. The button structure with a mechanical switch according to claim 8, wherein the bottom bevel of the segment plate, the positioning protrusion is after the key cap is released The lower inclined surface and the extended inclined surface of the guiding outer cylinder are substantially on the same inclined surface. The key structure of the mechanical switch according to claim 1, wherein the rotating inner cylinder is hollow and accommodates a triggering module, and a bottom of the receiving housing forms a through hole; wherein The triggering module does not protrude from the through hole; wherein a portion of the triggering module protrudes from the through hole corresponding to a state in which the keycap is pressed. The key structure of the mechanical switch according to claim 10, wherein the trigger module includes a receiving case, a spring received in the receiving case, and a touch portion movably received in the receiving case And abutting against the spring, a portion of the touch portion protrudes from a bottom surface of the receiving case. A mechanical switch includes: a receiving housing having a plurality of annular plates arranged in a ring shape; and a plurality of segment recessed regions formed at intervals between the plurality of the segment plates; a guiding outer tube, The movable outer tube is movable in a pressing direction, and the guiding outer tube abuts against a bottom surface of the key cap; wherein the guiding outer tube has an outer tube body and a plurality of outer a positioning protrusion protruding outwardly from a bottom of the barrel body, and a plurality of recessed parking portions formed at intervals between the plurality of positioning protrusions; the guiding outer tube has a hollow receiving space facing downward; a rotation The inner cylinder is received in the hollow receiving space of the guiding outer cylinder, the rotating inner cylinder has an inner cylinder body and a plurality of sliding protrusions protruding outward from the bottom of the inner cylinder body; a resilient member located at a bottom end of the rotating inner cylinder to provide an elastic force of the rotating inner cylinder toward the guiding outer cylinder; wherein the guiding outer cylinder is not pressed, a plurality of the sliding protrusions correspondingly Located at a bottom end of the plurality of positioning protrusions and located in the plurality of Bit recess area; wherein said outer guide tube being pressed, said plurality of projections positioned along the The pressing direction is away from the plurality of segment recessed regions, and the plurality of sliding protrusions are correspondingly slid into the plurality of the recessed stops by the bottom ends of the plurality of positioning protrusions; wherein the guiding outer cylinder is released Thereafter, the plurality of sliding protrusions are slid by the bottom surfaces of the plurality of the position plates to the bottom ends of the plurality of positioning protrusions. The mechanical switch of claim 12, wherein the accommodating case has an upper case and a lower case, the upper case having an outer edge portion engaged with the lower case, the plurality of The segment plate is located inside the outer edge portion in parallel with the outer edge portion. The mechanical switch according to claim 13, wherein the outer edge portion forms a plurality of engaging holes, and an outer surface of the lower case forms a plurality of engaging blocks, and the plurality of engaging blocks are correspondingly engaged. And the plurality of engaging holes. The mechanical switch according to claim 13, wherein the lower casing forms a plurality of escape holes, and the positions of the plurality of escape holes correspond to the plurality of positioning projections of the guide outer cylinder. The mechanical switch according to claim 13, wherein an inner surface of each of the segment plates forms a guiding rib parallel to the pressing direction, and an outer surface of the guiding outer cylinder forms a plurality of guiding grooves Correspondingly, a plurality of the guide ribs are accommodated. The mechanical switch according to claim 12, wherein the bottom of the positioning protrusion of the guiding outer cylinder has a lower inclined surface, the lower inclined surface is inclined with respect to the pressing direction, and the rotating inner cylinder is The top of the sliding protrusion has an upper inclined surface, and the upper inclined surface is inclined with respect to the pressing direction, and the upper inclined surface abuts against the lower inclined surface. The mechanical switch of claim 17, wherein the guide outer cylinder has an extended bevel that extends to the recessed stop due to the lower bevel. The mechanical switch of claim 18, wherein each of the segment plates has a first side, a second side, and a first side and the second side a bottom bevel of the side, wherein the first side is shorter than the second side. The mechanical switch of claim 19, wherein the bottom bevel of the segment plate, the lower bevel of the positioning tab, and the guide outer tube are released after the key cap is released The extended slopes are located substantially on the same slope. The mechanical switch of claim 12, wherein the rotating inner cylinder is hollow and houses a triggering module, and a bottom of the receiving housing forms a through hole; wherein the keycap is not pressed a state in which the trigger module does not protrude from the through hole; wherein a portion of the trigger module protrudes from the through hole corresponding to a state in which the key cap is pressed. The mechanical switch of claim 21, wherein the triggering module includes a receiving case, a spring received in the receiving case, and a touch portion movably received in the receiving case and abutting The spring has a portion of the touch portion protruding from a bottom surface of the receiving case.