TWI596634B - Mechanical switch structure - Google Patents

Description

Mechanical switch structure

The present invention relates to a mechanical switch structure, and more particularly to a mechanical switch structure for inputting signals or commands by pressing a button, 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 switch mechanical means 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 junction The structure 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 mechanical switch structure is provided, including a key cap; a substrate is disposed under the keycap and has a guiding opening; a lifting unit is disposed Between the keycap and the substrate, the keycap is guided to rise or fall along a pressing direction; a receiving housing is connected under the substrate, and the receiving housing includes a first volume corresponding to the guiding opening And a second accommodating unit on a side of the first accommodating unit; a guiding unit is movably received in the first accommodating unit along the pressing direction of the keycap, and is located at the a guiding portion is formed in the guiding opening; a first elastic member has two ends respectively abutting the guiding unit and the first receiving unit, and the guiding unit is provided in parallel with the guiding unit The elastic force of the pressing direction; and a resistance module having a pushing unit and a second elastic element, the pushing unit abutting the step of the guiding unit, the step facing the pushing unit Ups and downs; the second The elastic element is received in the second accommodating unit and provides an elastic force of the pushing unit toward the guiding unit; the pushing unit abuts the undulating step to provide the key cap in the pressing stroke Produce different resistance.

The present invention has the following advantageous effects: the present invention can reduce the overall height of the mechanical switch structure and improve the stability of its operation. The mechanical switch structure of the present invention abuts against the pushing unit of the resistance module by the step portion of the guiding unit, and the step portion faces the pushing unit in an undulating shape, thereby providing a more obvious paragraph feel.

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. The drawings and the annexed drawings are intended to be illustrative and not to limit the invention.

10‧‧‧Key Cap

11, 12‧‧‧ Connection Department

20‧‧‧Substrate

21‧‧‧Substrate body

216‧‧‧ Guide opening

2166‧‧‧Assembled recess

23a, 23b‧‧‧Restrictions

25‧‧‧Clock Department

250‧‧‧Snap hole

30‧‧‧ Lifting unit

31‧‧‧ first frame

311, 312‧‧‧ first shaft

32‧‧‧second framework

321, 322‧‧‧ second shaft

50‧‧‧ housing

51‧‧‧Upper casing

512‧‧‧Limited fence

5122‧‧‧Guide stop

5124‧‧‧Auxiliary Limits

5126‧‧‧Assembled positioning block

514‧‧‧ Side wall

516‧‧‧Retaining plate

5160‧‧‧ Identifying the bump

52‧‧‧ Lower case

521‧‧‧First accommodating unit

5211‧‧‧ Guide column

522‧‧‧Second accommodating unit

5221‧‧‧Bump

525‧‧‧Clamping projections

526‧‧‧Deduction Department

53‧‧‧ accommodating space

531‧‧‧Lighting diode

60‧‧‧Guide unit

61‧‧‧Guide

612‧‧‧stops

63‧‧‧Departure

630‧‧‧ initial face

631‧‧‧First bevel

632‧‧‧second bevel

633‧‧‧After the surface

68‧‧‧First elastic element

70‧‧‧resistance module

71‧‧‧Pushing unit

710‧‧‧ Body Department

711‧‧‧Main Abutment

712‧‧‧Auxiliary Abutment

713‧‧‧ Positioning Department

78‧‧‧Second elastic element

80‧‧‧Switch continuity module

81‧‧‧First conduction arm

811‧‧‧First Welding Department

812‧‧‧First Extension

813‧‧‧First contact

82‧‧‧Second conduction arm

821‧‧‧Second welding department

822‧‧‧Second extension

823‧‧‧Second contact

9‧‧‧Circuit board

91‧‧‧welding holes

95‧‧‧Assembly opening

96‧‧‧ Identification gap

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

1A is a perspective view of a guiding unit of a mechanical switch structure of the present invention.

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

Figure 3 is a partially assembled perspective view of the mechanical switch structure of the present invention.

4 is a perspective assembled view of the mechanical switch structure of the present invention.

4A is a cross-sectional view showing the mechanical switch structure of the present invention in an unpressed state.

4B is a cross-sectional view showing the mechanical switch structure of the present invention in a pressed state.

4C is a cross-sectional view of the mechanical switch structure of the present invention in an unpressed state along a horizontal plane.

4D is a cross-sectional view of the mechanical switch structure of the present invention in a pressed state along a horizontal plane.

Fig. 5 is a spring force diagram of the mechanical switch structure of the present invention.

Figure 6 is a perspective view of a portion of a housing of the mechanical switch structure of the present invention.

Please refer to FIG. 1 and FIG. 2 , which are perspective exploded views of the mechanical switch structure of the present invention at different angles. The present invention provides a mechanical switch structure including a keycap 10, a substrate 20 disposed under the keycap 10, a lifting unit 30 disposed between the keycap 10 and the substrate 20, and a connection to the substrate 20. The receiving housing 50, a guiding unit 60, a first elastic member 68, and a resistance module 70 are disposed.

The substrate 20 has a substrate body 21 and a plurality of restricting portions 23a and 23b that are bent upward by the substrate body 21 and protrude toward the keycap 10. The substrate 20 has a guiding opening 216 formed on the substrate body 21. The substrate 20 of the present embodiment may be stamped from a metal plate.

As shown in FIG. 2, the bottom surface of the keycap 10 has a plurality of connecting portions 11, 12. The lifting unit 30 of the embodiment is a scissor-foot structure for guiding the keycap 10 to rise or fall along a pressing direction. The lifting unit 30 has a first frame 31 and a second frame 32 rotatably coupled to the first frame 31. Two sides and a second frame of the first frame 31 The two sides of the 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.

In addition, the substrate 20 further has a pair of engaging portions 25, and the engaging portions 25 have engaging holes 250, respectively, which are bent downwardly from both sides of the substrate 20 and are fixedly engaged with the receiving portions. Housing 50.

In this embodiment, the accommodating housing 50 includes an upper housing 51 and a lower housing 52. The accommodating housing 50 includes a first accommodating unit 521 corresponding to the guiding opening 216 and a second accommodating unit 522 located at a side of the first accommodating unit 521 . The first accommodating unit 521 and the second accommodating unit 522 are formed between the upper casing 51 and the lower casing 52, and are surrounded by a plurality of partitions (not labeled) inside.

The upper casing 51 of the accommodating case 50 includes a plurality of downwardly extending side walls 514 and a pair of downwardly extending holding plates 516 that are engaged with the fastening portions 526 of the lower casing 52. The bottom end (refer to FIG. 2), the height of the plurality of side walls 514 is smaller than the height of the lower casing 52. The outer casing 51 has a substantially square outer shape in the vertical projection direction, and the outer casing 52 has a substantially polygonal outer shape in the vertical projection direction.

The guiding unit 60 is movably received in the first accommodating unit 521 of the accommodating housing 50 along the pressing direction of the keycap 10 and is located in the guiding opening 216. Please refer to FIG. 1 and FIG. 4A , wherein the first accommodating unit 521 has a guiding post 5211 , and the first elastic member 68 is sleeved on the guiding post 5211 . The guiding unit 60 is sleeved on the periphery of the first elastic element 68. After the substrate 20 of the present embodiment is combined with the accommodating case 50 and the guiding unit 60, as shown in FIG. The holding plate 25 is engaged with the engaging projection 525 of the lower casing 52.

4 is a perspective view of a mechanical switch structure and a circuit board of the present invention. The circuit board 9 cooperates with the outer shape of the lower casing 52, has an assembly opening 95 substantially polygonal, and an identification notch 96 is formed on one side of the assembly opening 95. The circuit board 9 also has a plurality of soldering holes 91. One of the holding plates 516 of the accommodating case 50 also protrudes from the identification protrusion 5160 for the assembler to align the identification gap 96 of the circuit board 9 during assembly of the mechanical switch structure of the present invention in the circuit board 9. .

As shown in FIG. 1A and FIG. 4A, a difference portion 63 is formed around the guiding unit 60. The function of the guiding unit 60 can not only assist in guiding and limiting the direction of movement of the keycap 10 during the pressing process. In addition, the embodiment is further configured to cooperate with the resistance module 70 to generate a pressing feel similar to a mechanical switch by the step portion 63. Further explanation below.

First, the guiding unit 60 guides and limits the moving direction of the keycap 10. As shown in FIG. 1 to FIG. 3 , the upper casing 51 protrudes upwardly from a limiting wall 512 , and the guiding unit 60 has a hollow column shape and movably passes through the limiting wall 512 . The top of the guiding unit 60 abuts against the bottom surface of the keycap 10, and a plurality of guiding grooves 61 and a plurality of stopping portions 612 are formed around the guiding unit 60, and the plurality of blocking portions 612 are respectively located in the plurality of guiding portions The bottom end of the groove 61. The plurality of guiding members 5122 protrude inwardly from the limiting wall 512, and the plurality of guiding members 5122 are respectively located in the plurality of guiding slots 61 and prevent the guiding unit 60 from leaving the receiving housing Body 50. The plurality of assembly recesses 2126 are formed by the plurality of assembly recesses 2126. The plurality of assembly recesses 5126 are respectively located in the plurality of assembly recesses 2166. The substrate 20 is assembled more smoothly in the housing case 50 to avoid deflection. The first elastic member 68 has two ends that abut against the guiding unit 60 and the first receiving unit 521, respectively, and provides an elastic force of the guiding unit 60 parallel to the pressing direction.

In addition, the guiding unit 60 cooperates with the resistance module 70 to produce a pressing feel similar to a mechanical switch. As shown in FIG. 1 , FIG. 1A and FIG. 2 , the resistance module 70 has a pushing unit 71 and a second elastic element 78 , and the pushing unit 71 abuts on the step portion 63 of the guiding unit 60 . The step portion 63 faces the pushing unit 71 in an undulating shape. The second elastic element 78 is received in the second accommodating unit 522 and provides the pushing unit 71 The elastic force toward the guiding unit 60. In this embodiment, the second accommodating unit 522 further has a stud 5221 , and the other end of the second elastic member 78 is positioned on the stud 5221 . The pushing unit 71 abuts on the undulating step portion 63, and the second elastic member 78 is pushed by the step portion 63 to generate a different degree of compression, so that the pushing unit 71 and the plurality of surfaces of the step portion 63 are generated. The different resistances, in turn, provide the keycap 10 with different resistance during the pressing stroke, resulting in a multi-segmented and distinctly felt pressing feel.

4A and 4B are cross-sectional views of the present invention taken along line IV A-IV A of FIG. 4. In this embodiment, the moving direction of the pushing unit 71 is substantially perpendicular to the pressing direction, and the pushing unit 71 has a body portion 710 and a main abutting portion protruding from the body portion 710 toward the guiding unit 60. 711. The main abutting portion 711 is adjacent to the guiding opening 216 of the substrate 20 and continues to abut the step portion 63. The pushing unit 71 further includes a positioning portion 713 on one side of the body portion 710 and an auxiliary abutting portion 712. The auxiliary abutting portion 712 is protruded from the body portion 710 toward the guiding unit 60 and adjacent to the main abutting portion 711. The positioning portion 713 is opposite to the main abutting portion 711 and is connected to one end of the second elastic member 78. The auxiliary abutment portion 712 is adjacent to the bottom of the housing case 50. When the keycap 10 is pressed down to the bottom, the auxiliary abutting portion 712 abuts against the step portion 63. As shown in Figure 4B.

In addition, as shown in FIG. 1 to FIG. 2 , the limiting wall 512 forms a protruding auxiliary limiting portion 5124 for the pushing portion 71 to be stepped by the main abutting portion 711 of the pushing unit 71 . After the outer 63 is pushed outward, the main abutting portion 711 is guided and restricted to the auxiliary limiting portion 5124.

Please refer to FIG. 4A and FIG. 4B together. The step portion 63 of the guiding unit 60, more specifically, the bottom surface of the guiding unit 60 toward the keycap 10 sequentially includes an initial surface 630 parallel to the pressing direction and a first inclined surface connected to the initial surface 630. 631, a second inclined surface 632 bently connected to the first inclined surface 631, and a rear surface 633 extending parallel to the pressing direction and extending by the second inclined surface 632. The slope of the first slope 631 with respect to the pressing direction is different from the slope of the second slope 632 with respect to the pressing direction. In this embodiment, the initial surface 630 and the rear surface 633 are planes parallel to the pressing direction, wherein the initial surface 630 is closer to the pushing unit 71 than the rear surface 633.

As shown in FIG. 4B, when the keycap 10 is pressed down to the bottom, the main abutting portion 711 abuts against the rear surface 633 of the step portion 63; the auxiliary abutting portion 712 abuts against the initial surface 630 of the step portion 63. . Thereby, the guiding unit 60 is kept smoothly raised and lowered.

Referring to FIG. 1 to FIG. 3 and FIG. 6, the switch-on module 80 of the mechanical switch structure of the present embodiment will be described below. The switch conducting module 80 of the embodiment includes a first conducting arm 81 and a second conducting arm 82. The second conductive arm 82 is fixedly connected to the pushing unit 71. The first conductive arm 81 is located at one side of the pushing unit 71, and when the pushing unit 71 abuts against the step portion 63 to generate displacement. The pushing unit 71 pushes the second conducting arm 82 to abut against the first conducting arm 81 to generate a pressing signal.

The main portion of the first conductive arm 81 is received in the accommodating housing 50. The main portion of the first conductive arm 81 has a first soldering portion 811 located at one side of the second receiving unit 522. And extending to the outside of the accommodating case 50, a first extending portion 812 extends from the first soldering portion 811 and laterally through the second accommodating unit 522, and a first contact portion 813 is located at the first extending portion The end of the portion 812.

The second conductive arm 82 is received in the accommodating housing 50. The second conductive portion 82 has a second soldering portion 821 fixed to one side of the second accommodating unit 522 and extends to the The second extension portion 822 extends from the second solder portion 821 and the second contact portion 823 extends from the second solder portion 822 and adjacent to the first contact portion 813. The second extension portion 822 passes through the pushing unit 71. The second extension portion 822 of the embodiment may be coupled to the pushing unit 71 by means of burying, but is not limited thereto. For example, it may be a hot melt joint, an adhesive joint or other joint means.

Referring to FIG. 4A and FIG. 4B, the manner in which the electrical conduction in this embodiment is used to generate a signal is described as follows. In the present embodiment, the initial surface 630 and the rear surface 633 are planes parallel to the pressing direction, wherein the initial surface 630 is closer to the pushing unit 71 than the rear surface 633. Please also refer to FIG. 4C and FIG. 4D , which are cross-sectional views of the mechanical switch structure of the present invention in an unpressed state and a state after pressing along a horizontal plane, respectively corresponding to FIG. 4A . And Figure 4B. When the keycap 10 is pressed down, the pushing unit 71 drives the second extending portion 822 of the second conducting arm 82 to move toward the guiding unit 60, so that the second contact portion 823 touches the first contact portion 813 forward. Electrically conductive.

In addition, the accommodating case 50 of the present embodiment can also provide an accommodating space 53 for the illuminating element for accommodating the illuminating diode 531. Thereby, each of the mechanical switch structures can be provided with light-emitting diodes 531 of different colors.

Please refer to FIG. 5 , which is a spring force diagram of the mechanical switch structure of the embodiment during pressing. The button is changed by the action of the finger force and can be expressed using the elastic curve. The horizontal axis (X-axis) of the elastic curve represents the stroke distance (Stroke) of the pressed button action, and the unit is mm; the vertical axis (Y-axis) represents the force (Force) to be used for finger depression, and 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. Referring to FIG. 4A and FIG. 4B simultaneously, in the stroke in which the keycap 10 is pressed, the initial state is that the initial surface 630 abuts against the pushing unit 71, and the comparison is the starting point O of FIG. The guiding unit 60 is continuously pressed and lowered, and the first inclined surface 631 continuously abuts against the pushing unit 71. The second elastic member 78 of the present embodiment is a compression spring, and the second elastic member 78 is gradually compressed by the first slope 631 to apply a reverse elastic force to the guiding unit 60. The reverse elastic force generates an upward component force acting on the first slope 631, so the pressing stroke of the keycap 10 is from the starting point O to the peak point P, as shown in FIG. 5, from 0 mm to about 0.8 mm, encountered More and more resistance.

The keycap 10 is continuously pressed until the pushing unit 71 abuts against the turning point of the first slope 631 and the second slope 632, which is the peak point P of FIG. Then, the second inclined surface 632 continuously abuts against the pushing unit 71, and the second elastic member 78 gradually recovers along the second inclined surface 632, and the elastic force applied to the guiding unit 60 gradually decreases, as shown in FIG. . The absolute value of the slope of the second slope 632 of the present embodiment may be smaller than the absolute value of the slope of the first slope 631.

Next, the pushing unit 71 is moved from the second slope 632 to the rear surface 633. The rear surface 633 of the embodiment is a vertical plane, so the elastic force of the second elastic member 78 does not continue. In contrast, in contrast to the horizontal point portion of the inflection point T to the contact point C in Fig. 5, a distinct paragraph feeling is particularly provided. Contact point C represents electrical conduction of the mechanical switch structure of the present embodiment. After the conduction, since the keycap 10 and the guiding unit 60 have been pressed to the bottom, the resistance is increasingly increased until the end point E as shown in FIG.

Both the peak point P and the contact point C in Fig. 5 affect the pressing feel of the mechanical switch structure. Pressing the feel can generally be measured by objective pressure data as follows. The button ratio of the button pressure (Snap ratio or Click ratio) formula = {Peak Force - Contact Force} / peak strength * 100%.

The step ratio of the key pressure of this embodiment is about 40%. The conventional mechanical switch usually has a compression spring inside, which is a spring-type structure, and its elastic force curve is curved from the peak point to the contact point, then it is inclined and then gradually increases the resistance, and there is no figure as in this embodiment. In the horizontal section of 5, the hand feel is less obvious.

The mechanical switch structure of the present invention abuts against the pushing unit 71 of the resistance module 70 by the step portion 63 of the guiding unit 60, and the step portion 63 faces the pushing unit 71 in an undulating shape. , providing a more obvious paragraph feel.

The mechanical switch structure of the present invention provides a good conduction effect and a service life by the first conductive arm 81 and the second conductive arm 82.

The mechanical switch structure of the present invention can reduce the overall height by the lifting unit 30, and the key stroke can be reduced to 2.5 mm. With the guiding unit 60, the button can be provided with better stability.

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.

10‧‧‧Key Cap

20‧‧‧Substrate

30‧‧‧ Lifting unit

50‧‧‧ housing

51‧‧‧Upper casing

512‧‧‧Limited fence

5122‧‧‧Guide stop

52‧‧‧ Lower case

521‧‧‧First accommodating unit

5211‧‧‧ Guide column

522‧‧‧Second accommodating unit

5221‧‧‧Bump

53‧‧‧ accommodating space

60‧‧‧Guide unit

61‧‧‧Guide

612‧‧‧stops

63‧‧‧Departure

630‧‧‧ initial face

631‧‧‧First bevel

632‧‧‧second bevel

633‧‧‧After the surface

68‧‧‧First elastic element

71‧‧‧Pushing unit

710‧‧‧ Body Department

711‧‧‧Main Abutment

712‧‧‧Auxiliary Abutment

713‧‧‧Connecting Department

78‧‧‧Second elastic element

Claims (14)

A mechanical switch structure includes: a key cap; a substrate disposed under the key cap and having a guiding opening; and a lifting unit disposed between the key cap and the substrate to guide the key brim a accommodating case is connected to the bottom of the substrate, the accommodating case includes a first accommodating unit corresponding to the guiding opening, and a side of the first accommodating unit a second accommodating unit; a guiding unit is movably received in the first accommodating unit along the pressing direction of the key cap, and is located in the guiding opening; wherein the guiding unit is formed around the guiding unit a first elastic member having two ends abutting the guiding unit and the first receiving unit respectively, providing an elastic force of the guiding unit parallel to the pressing direction; and a resistance module having a pushing unit and a second elastic element, the pushing unit abutting the step of the guiding unit, the step facing the pushing unit is undulating; the second elastic element is received in the second Locating the unit and providing the orientation of the pushing unit The elastic force of the guide unit; the pushing means abuts against the stepped portion undulates to provide a different resistance to the keycap generated in the pressing stroke. The mechanical switch structure of claim 1, wherein the substrate has a plurality of restricting portions protruding toward the keycap, the bottom surface of the keycap having a plurality of connecting portions, the lifting unit having a first frame and rotatably A second frame connected to the first frame, the two sides of the first frame and the two sides of the second frame are respectively connected to the plurality of limiting portions and the plurality of connecting portions. The mechanical switch structure of claim 2, wherein the substrate has a pair of engaging portions that are respectively bent downwardly from both sides of the substrate and The housing is fixedly engaged. The mechanical switch structure of claim 1, wherein the step of the guiding unit comprises, by the bottom of the guiding unit toward the keycap, an initial surface parallel to the pressing direction, and a connection to the initial a first inclined surface of the surface, a second inclined surface bently connected to the first inclined surface, and a rear inclined surface extending parallel to the pressing direction and extending by the second inclined surface. The mechanical switch structure of claim 4, wherein a slope of the first slope relative to the pressing direction is different from a slope of the second slope relative to the pressing direction, wherein the initial surface is closer to the pressing direction than the rear surface unit. The mechanical switch structure of claim 1, wherein the accommodating housing comprises an upper housing and a lower housing, wherein the upper housing protrudes upwardly from a limiting wall, and the guiding unit has a hollow column shape and is movable The top of the guiding unit is connected to the bottom surface of the keycap, and a plurality of guiding grooves and a plurality of stopping portions are formed around the guiding unit, and the plurality of blocking portions are respectively located at the bottom of the guiding unit The bottom end of the guiding groove; the limiting wall protrudes inwardly of the plurality of guiding blocks, and the plurality of guiding blocks are respectively located in the plurality of guiding grooves and prevent the guiding unit from leaving the receiving housing. The mechanical switch structure of claim 6, wherein the upper housing of the accommodating housing comprises a plurality of downwardly extending side walls and a pair of downwardly extending holding plates, the pair of retaining plates being engaged The lower casing has a height of the plurality of side walls that is smaller than a height of the lower casing. The mechanical switch structure of claim 1, wherein the first accommodating unit has a guiding post, the first elastic component is sleeved on the guiding post, and the guiding component is sleeved on the first elastic component The periphery. The mechanical switch structure according to claim 1, wherein the moving direction of the pushing unit is perpendicular to the pressing direction, the pushing unit has a body portion, and a main body protruding from the body portion toward the guiding unit The main abutting portion is adjacent to the guiding opening of the substrate and continues to abut the step portion. The mechanical switch structure of claim 9, wherein the pushing unit further comprises a positioning portion on one side of the main body portion, and an auxiliary abutting portion protruding from the main body portion toward the guiding unit and adjacent to the main abutting portion, the positioning portion is opposite to the main abutting portion and connected to the first portion One end of the two elastic members is adjacent to the bottom of the accommodating case, and when the key cap is pressed down to the bottom, the auxiliary abutting portion abuts against the step portion. The mechanical switch structure of claim 10, wherein the second accommodating unit further has a protrusion, and the other end of the second elastic element is positioned on the protrusion. The mechanical switch structure of claim 1, further comprising a first conducting arm and a second conducting arm, the second conducting arm being fixedly connected to the pushing unit, the first conducting arm being located at the pushing unit On one side, when the pushing unit abuts against the step and generates a displacement, the pushing unit pushes the second conducting arm to abut the first conducting arm to generate a pressing signal. The mechanical switch structure of claim 12, wherein the first conductive arm is received in the receiving housing, the first conductive arm has a first soldering portion extending outside the receiving housing, and a first extending portion Extending from the first soldering portion and a first contact portion at an end of the first extending portion. The mechanical switch structure of claim 13, wherein the second conductive arm is received in the accommodating housing, the second conductive arm has a second soldering portion fixed to one side of the second accommodating unit and extends Up to the outside of the housing, the second extension extends from the second soldering portion, and the second contact portion extends from the second soldering portion and adjacent to the first contact portion, the second extending portion passes through the pushing portion unit.