Keyboard with scissor foot structure

Abstract

The utility model discloses a keyboard with a scissor foot structure. The keyboard comprises a keycap; the scissor foot support is arranged below the key cap; the top cover is arranged below the scissor foot support, the upper surface of the top cover comprises a plurality of key position areas corresponding to keys, and each key position area is provided with a base used for installing the scissor foot support and a through hole penetrating through the top cover; the elastic diaphragm plate is arranged below the top cover; the circuit board is arranged below the elastic diaphragm plate; the top cover is provided with a through hole, the circuit board is arranged on the top cover, the bottom cover is arranged below the circuit board, the elastic diaphragm plate comprises an elastic piece protruding upwards, and the elastic piece penetrates through the through hole in the top cover and protrudes out of the upper surface of the top cover. According to the utility model, the base for mounting the scissor support is integrated with the top cover, so that the structure of the keyboard is simplified, and the defect that the elastic diaphragm plate of the traditional keyboard needs to be provided with holes for mounting the scissor support is overcome.

Description

Technical Field

[0001] The utility model relates to computer peripherals, in particular to a keyboard, and more particularly to a keyboard with a scissor-leg structure. Background Art

[0002] With the popularization of computer technology, computer peripherals have also developed rapidly. The keyboard is one of the most frequently used computer peripherals. Common keyboards on the market are generally divided into two categories: membrane keyboards and mechanical keyboards. In order to achieve the thinness of the keyboard, the general membrane keyboard adopts a scissor foot structure. In the common scissor foot structure keyboard, the support for fixing the scissor foot structure passes through the elastic membrane plate. Therefore, it is necessary to reserve openings in the process of producing the elastic membrane plate, resulting in a high overall production cost of the keyboard. Therefore, there has always been a huge design demand in the field of membrane keyboards to reduce the overall production cost of the keyboard. Utility Model Content

[0003] The technical problem to be solved by the present invention is to simplify the structure of the keyboard and reduce the damage to the elastic membrane and the circuit board during the installation and disassembly of the scissor foot structure. In order to solve this technical problem, the embodiment of the present invention proposes a keyboard with a scissor foot structure. The keyboard includes: a keycap; a scissor foot bracket arranged below the keycap; a top cover arranged below the scissor foot bracket, the upper surface of the top cover includes a plurality of key positions corresponding to the keys, each key position area is provided with a base for installing the scissor foot bracket and a through hole passing through the top cover; an elastic membrane arranged below the top cover; a circuit board arranged below the elastic membrane; and a bottom cover arranged below the circuit board, the elastic membrane including an elastic member protruding upward, the elastic member passes through the through hole on the top cover and protrudes from the upper surface of the top cover.

[0004] According to some embodiments of the present invention, the keyboard further includes: a support plate disposed below the circuit board, wherein the support plate is sandwiched between the circuit board and the bottom cover.

[0005] According to some embodiments of the present invention, the keyboard further includes: a foam board arranged below the support plate, and the foam board is sandwiched between the support plate and the bottom cover.

[0006] According to some embodiments of the present invention, the keyboard further includes: a foam board arranged below the circuit board, and the foam board is sandwiched between the circuit board and the bottom cover.

[0007] According to some embodiments of the utility model, the scissor leg bracket includes an outer frame and an inner frame pivotally connected together, wherein the outer frame includes a first side beam and a second side beam arranged opposite to each other, and a third side beam and a fourth side beam connecting the first side beam and the second side beam, wherein the two ends of the first side beam of the outer frame respectively include an axis neck portion, and the two ends of the second side beam of the outer frame respectively include a first ear shaft, the base includes a pair of first bearing seats, the axis neck portions are respectively received in the first bearing seats, and the key cap includes a pair of sliding grooves arranged on the lower surface thereof, and the first ear shafts are respectively received in the sliding grooves and can slide in the sliding grooves.

[0008] According to some embodiments of the utility model, the inner frame includes a first side beam and a second side beam that are relatively arranged, and a third side beam and a fourth side beam connecting the first side beam and the second side beam, wherein the two ends of the first side beam of the inner frame respectively include a second ear axis, and the two ends of the third side beam of the inner frame respectively include a third ear axis, the keycap includes a pair of second bearing seats arranged on its lower surface, the second ear axis is received in the second bearing seat, and the base includes a pair of hooks arranged relative to the first bearing seat, the third ear axis is received in the hook and can slide in the hook.

[0009] According to some embodiments of the present invention, the base includes a limiting protrusion arranged in a straight line with the first bearing seat.

[0010] According to some embodiments of the present invention, the top of the elastic member abuts against the lower surface of the keycap.

[0011] Some other embodiments of the utility model propose a keyboard with a scissor foot structure. The keyboard includes: a top cover, the top cover includes key holes corresponding to the keys; a scissor foot bracket, the scissor foot bracket passes through the key holes on the top cover; a key cap, the key cap is arranged on the scissor foot bracket; a base plate arranged below the scissor foot bracket, wherein the base plate includes a base for mounting the scissor foot bracket and a through hole passing through the base plate; an elastic membrane plate arranged below the base plate; a circuit board arranged below the elastic membrane plate; and a bottom cover arranged below the circuit board, the elastic membrane plate includes an elastic member protruding upward, the elastic member passes through the through hole on the base plate and the key hole on the top cover, and protrudes from the upper surface of the top cover.

[0012] According to some embodiments of the present invention, the keyboard further includes: a support plate disposed below the circuit board, wherein the support plate is sandwiched between the circuit board and the bottom cover.

[0013] According to some embodiments of the present invention, the keyboard further includes: a foam board arranged below the support plate, and the foam board is sandwiched between the support plate and the bottom cover.

[0014] According to some embodiments of the present invention, the keyboard further includes: a foam board arranged below the circuit board, and the foam board is sandwiched between the circuit board and the bottom cover.

[0015] According to some embodiments of the utility model, the scissor leg bracket includes an outer frame and an inner frame pivotally connected together, wherein the outer frame includes a first side beam and a second side beam arranged opposite to each other, and a third side beam and a fourth side beam connecting the first side beam and the second side beam, wherein the two ends of the first side beam of the outer frame respectively include an axis neck portion, and the two ends of the second side beam of the outer frame respectively include a first ear shaft, the base includes a pair of first bearing seats, the axis neck portions are respectively received in the first bearing seats, and the key cap includes a pair of sliding grooves arranged on the lower surface thereof, and the first ear shafts are respectively received in the sliding grooves and can slide in the sliding grooves.

[0016] According to some embodiments of the utility model, the inner frame includes a first side beam and a second side beam that are relatively arranged, and a third side beam and a fourth side beam connecting the first side beam and the second side beam, wherein the two ends of the first side beam of the inner frame respectively include a second ear axis, and the two ends of the third side beam of the inner frame respectively include a third ear axis, the keycap includes a pair of second bearing seats arranged on its lower surface, the second ear axis is received in the second bearing seat, and the base includes a pair of hooks arranged relative to the first bearing seat, the third ear axis is received in the hooks and can slide in the hooks.

[0017] According to some embodiments of the present invention, the base includes a limiting protrusion arranged in a straight line with the first bearing seat.

[0018] According to some embodiments of the present invention, the top of the elastic member abuts against the lower surface of the keycap.

[0019] The utility model has obvious beneficial technical effects compared with the prior art. Specifically, the base for installing the scissor foot bracket is integrated with the top cover, which simplifies the structure of the keyboard and avoids the defect of the traditional keyboard that a hole needs to be opened on the elastic membrane plate to install the scissor foot bracket. In addition, the scissor foot bracket is installed on the top cover, which is convenient for installing and removing the scissor foot bracket without having to disassemble the fasteners between the top cover and the bottom cover, avoiding accidental damage to the elastic membrane plate and the circuit board during the installation and removal of the scissor foot bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a perspective view of a keyboard according to an embodiment of the present utility model.

[0021] Figure 2 It is an exploded perspective view of a keyboard according to an embodiment of the present invention, specifically showing various components of the keyboard.

[0022] Figure 3A A perspective view of a scissor leg bracket according to an embodiment of the utility model is shown.

[0023] Figure 3B A perspective view of an outer frame of a scissor leg bracket according to an embodiment of the utility model is shown.

[0024] Figure 3C A perspective view of an inner frame of a scissor leg bracket according to an embodiment of the utility model is shown.

[0025] Figure 4 A perspective view of a top cover of a keyboard according to an embodiment of the present invention is shown.

[0026] Figure 5 Shows Figure 4 The enlarged view of the area indicated by the middle dotted circle A also shows the scissor foot bracket and the key cap according to an embodiment of the utility model.

[0027] Figure 6 A perspective view of a key cap and a scissor foot bracket according to an embodiment of the utility model is shown.

[0028] Figure 7 It is a perspective view of an elastic membrane plate according to an embodiment of the utility model.

[0029] Fig. 8A It is a cross-sectional view of a keyboard according to an implementation mode of the utility model.

[0030] Figure 8B yes Fig. 8A The enlarged view of the area shown in the dotted rectangular box B shows the relationship between the keycap, the scissor foot bracket, the top cover, and the elastic membrane plate.

[0031] Fig. 9 An exploded perspective view of a keyboard 20 according to another embodiment of the present invention is shown. DETAILED DESCRIPTION

[0032] Representative applications of the methods and devices according to the present application are described in this section. These examples are provided only to add context and help understand the described embodiments. It is therefore obvious to those skilled in the art that the described embodiments can be practiced without some or all of these specific details. In other cases, well-known processing steps are not described in detail to avoid unnecessary confusion of the described embodiments. Other applications are also possible, so the following examples should not be considered as limiting.

[0033] It should be understood that in the embodiments of the present application, "at least one" refers to one or more, and "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The symbol " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one (item)" or other similar expressions in the text refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can represent a; b; c; a and b; a and c; b and c; or a, b and c, where a, b, c can be single or multiple.

[0034] In the following detailed description, reference is made to the accompanying drawings, which form a part of the description and in which are shown by way of illustration specific embodiments in accordance with the described embodiments. Although these embodiments are described in sufficient detail to enable those skilled in the art to practice the described embodiments, it is to be understood that these examples are not limiting; therefore, other embodiments may be used and changes may be made without departing from the spirit and scope of the described embodiments.

[0035] Figure 1 1 is a perspective view of a keyboard 10 according to an embodiment of the present invention. Figure 1 As shown, the keyboard 10 generally includes a top cover 100 and a bottom cover 200 (see Figure 2 ). The key caps 300 of the plurality of keys protrude from the upper surface of the top cover 100. By pressing the key caps 300, each key can be independently pressed to realize the input function of the keyboard.

[0036] Figure 2 FIG. 1 is an exploded perspective view of a keyboard 10 according to an embodiment of the present invention, specifically showing the various components of the keyboard 10. Figure 2As shown, the keyboard 10 includes a keycap 300; a scissor foot bracket 400 disposed below the keycap 300; a top cover 100 disposed below the scissor foot bracket 400; an elastic membrane 500 disposed below the top cover 100; a circuit board 600 disposed below the elastic membrane 500; a support plate 700 optionally disposed below the circuit board 600, and a foam plate 800 optionally disposed below the support plate 700; and a bottom cover 200 disposed below the foam plate 800. It should be understood that in an embodiment that does not include the support plate 700 and the foam plate 800, the bottom cover 200 is disposed below the circuit board 600. Similarly, in an embodiment that does not include the support plate 700 but includes the foam plate 800, the foam plate 800 is disposed below the circuit board 600. That is, the foam plate 800 is sandwiched between the circuit board 600 and the bottom cover 200. Similarly, in an embodiment that does not include the foam plate 800 but includes the support plate 700, the bottom cover 200 is disposed below the support plate 700. That is, the support plate 700 is sandwiched between the circuit board 600 and the bottom cover 200. Figure 2 As shown, the top cover 100 is a roughly rectangular frame, and the periphery includes a top cover side wall 110. Similarly, the bottom cover 200 is correspondingly a roughly rectangular frame, and the periphery includes a bottom cover side wall 210. When the keyboard 10 is in an assembled state, the top cover 100 and the bottom cover 200 are snapped together, so that the elastic membrane plate 500, the circuit board 600, the support plate 700, and the foam plate 800 are sandwiched in the cavity formed by the top cover 100 and the bottom cover 200. In some embodiments, the top cover 100 and the bottom cover 200 can be further fastened together using fasteners (not shown), such as screws.

[0037] In some embodiments, the upper surface of the top cover 100 includes a plurality of key positions corresponding to the keys. Each key position area is provided with a base 120 for mounting the scissor foot bracket 400. The scissor foot bracket 400 is mounted on the corresponding base 120, and the structure of the base 120 will be described in detail below. During the assembly process of the keyboard 10, the scissor foot bracket 400 can be mounted on the base 120 after the top cover 100 and the bottom cover 200 are assembled. Similarly, during the use of the keyboard 10, if a scissor foot bracket 400 is damaged and needs to be replaced, it is not necessary to disassemble the top cover 100 from the bottom cover 200, but the damaged scissor foot bracket 400 can be directly removed from the top cover 100. In addition, the base 120 is arranged on the top cover 100, and is separated from the elastic membrane 500 and the circuit board 600 by the top cover 100. The advantage of such a design is to avoid accidentally causing damage to the elastic membrane 500 or the circuit board 600 when the scissor foot bracket 400 is disassembled.

[0038] Combine the following Figures 3A to 5 The structures of the scissor leg bracket 400 and the base 120 according to one embodiment of the present invention are described in detail. Figure 3AFIG. 4 shows a perspective view of a scissor leg bracket 400 according to an embodiment of the present invention. Figure 3A As shown, the scissor leg bracket 400 includes an outer frame 410 and an inner frame 450 that are pivotally connected together. Figure 3B FIG. 4 is a perspective view showing an outer frame 410 of a scissor foot bracket 400 according to an embodiment of the present invention. Figure 3C FIG. 4 shows a perspective view of an inner frame 450 of a scissor leg bracket 400 according to an embodiment of the present invention. Figure 3B As shown, in some embodiments, the outer frame 410 is generally in the form of a hollow rectangular frame, including a first side beam 411 and a second side beam 413 arranged opposite to each other, and a third side beam 415 and a fourth side beam 417 connecting the first side beam 411 and the second side beam 413. Both ends of the first side beam 411 include a shaft neck 412. Figure 3A ) During the assembly process, the neck portion 412 can be received and supported in the corresponding bearing seat of the base 120 and can rotate in the bearing seat, which is described in detail below. The outer frame 410 includes a first ear shaft 414 at both ends of the second side beam 413 on the rectangular frame of the outer frame 410 opposite to the first side beam 411. Figure 2 ) During the assembly process, the first ear axis 414 can be received in the slide groove provided on the lower surface of the key cap 300. During the pressing process of the key cap 300, the first ear axis 414 can slide slightly in the slide groove and will not fall out of the slide groove, which is described in detail below. Figure 3B As shown, the outer frame 410 includes a bearing hole 416 disposed in the middle of the third side beam 415 and the fourth side beam 417 (only the bearing hole 416 in the middle of the fourth side beam is shown). During the assembly process of the scissor leg bracket 400, the bearing hole 416 is used to receive the corresponding pivot shaft 456 disposed on the inner frame 450 (see FIG. Figure 3C ), so that the outer frame 410 can rotate relative to the inner frame 450 around the axis of the pivot shaft 456.

[0039] like Figure 3C As shown, in some embodiments, the inner frame 450 is generally in the form of a hollow rectangular frame, including a central through hole 460. When the scissor foot bracket 400 and the top cover 100 are assembled, the central through hole 460 facilitates the elastic member provided on the elastic membrane 500 to pass through the top cover 100 and abut against the bottom of the keycap 200, as further described below. Figure 3CAs shown, the inner frame 450 similarly includes a first side beam 451 and a second side beam 453 disposed opposite to each other, and a third side beam 455 and a fourth side beam 457 connected to the first side beam 451 and the second side beam 453 and disposed opposite to each other. In some embodiments, both ends of the first side beam 451 of the inner frame 450 include a second ear axis 452. Figure 2 ) During the assembly process, the second ear shaft 452 can be received in a bearing seat provided on the lower surface of the key cap 300 and can rotate in the bearing seat, which is described in detail below. In some embodiments, both ends of the second side beam 453 of the inner frame 450 include a third ear shaft 454. Figure 3A ) During the assembly process, the third ear axis 454 can be received in a corresponding hook provided on the base 120. During the pressing process of the keycap 300, the second ear axis can slide slightly in the hook and will not fall out of the hook, as described in detail below. Figure 3C As shown, the inner frame 450 includes a pivot shaft 456 disposed in the middle of the third side beam 455 and the fourth side beam 457. During the assembly process of the scissor leg bracket 400, the pivot shaft 456 is received in the bearing hole 416 on the outer frame 410 (see FIG. Figure 3B ), so that the outer frame 410 can rotate relative to the inner frame 450 around the axis of the pivot shaft 456.

[0040] Figure 4 FIG. 1 shows a perspective view of a top cover 100 of a keyboard 10 according to an embodiment of the present invention. Figure 4 As shown, the top cover 100 is roughly rectangular, and a plurality of key positions corresponding to the keys are arranged on its upper surface. Each key position is provided with a scissor foot bracket 400 (see Figure 3A ) base 120. In some embodiments, each key position further includes a centrally disposed through hole 130. When the keyboard 10 is assembled, the elastic membrane plate 500 (see Figure 2 ) The elastic member disposed on the upper surface passes through the through hole 130 and protrudes from the upper surface of the top cover 100, which is further described below. Figure 4 The enlarged view of the base 120 shown by the dotted circle A further describes the specific structure of the base 120.

[0041] Figure 5 Shows Figure 4The enlarged view of the area indicated by the dotted circle A shows the scissor foot bracket 400 and the keycap 300 according to an embodiment of the present invention. In some embodiments, the base 120 includes a pair of first bearing seats 122 protruding from the upper surface of the top cover 100. When the keyboard 10 is assembled, the first bearing seats 122 are used to receive the first ear shafts 412 provided at both ends of the first side beams 411 of the outer frame 410 of the scissor foot bracket 400, so that when the keycap 300 is pressed and the scissor foot bracket 400 is compressed in the vertical direction, the first ear shaft 412 can rotate in the first bearing seat 122. In some embodiments, the base 120 also includes a positioning protrusion 124 arranged in a straight line with the first bearing seat 122. In some embodiments, the base 120 includes two positioning protrusions 124. When the scissor foot bracket 400 is assembled to the top cover 100, the positioning protrusion 124 abuts against the first side beam 411 of the outer frame 410 of the scissor foot bracket 400, which plays a limiting role in the installation and operation of the scissor foot bracket 400. In some embodiments, the base 120 further includes a pair of hooks 126 protruding from the upper surface of the top cover 100. The opening of the hook 126 faces outward, that is, away from the first bearing seat 122. When the scissor foot bracket 400 is assembled to the top cover 100, the third ear axis 454 of the inner frame 450 of the scissor foot bracket 400 is received in the hook 126 and abuts against the lower surface of the hook 126. When the keycap 300 is pressed and the scissor foot bracket 400 is compressed in the vertical direction, the third ear axis 454 of the inner frame 450 can slide slightly in the hook 126 in the direction away from the first bearing seat 122, and will not fall out of the hook 126.

[0042] Figure 6 FIG. 4 shows a perspective view of a key cap 300 and a scissor foot bracket 400 according to an embodiment of the present invention. Figure 6 As shown, in some embodiments, the keycap 300 includes a pair of second bearing seats 302 protruding from its lower surface. When the keycap 300 is assembled with the scissor foot bracket 400, the second bearing seats 302 are used to receive the second ear shafts 452 at both ends of the first side beam 451 of the inner frame 450 of the scissor foot bracket 400. When the keycap 300 is pressed and the scissor foot bracket 400 is compressed along the vertical direction, the second ear shaft 452 can rotate in the second bearing seat 302. According to some embodiments, the lower surface of the keycap 300 also includes a pair of slide grooves 304 (only one of which is shown) protruding from its lower surface. When the keycap 300 is assembled with the scissor foot bracket 400, the first ear shafts 414 at both ends of the second side beam 413 of the outer frame 410 of the scissor foot bracket 400 are received in the slide grooves 304. When the keycap 300 is pressed and the scissor leg bracket 400 is compressed along the vertical direction, the first ear axis 414 can slide slightly in the slide groove 304 in a direction away from the second bearing seat 302 and will not fall out of the slide groove 304.

[0043] Figure 7 FIG. 5 is a perspective view of an elastic membrane plate 500 according to an embodiment of the present invention. Figure 7 As shown, the elastic membrane 500 includes an elastic member 510 protruding from its upper surface and corresponding to the key. In the assembled state of the keyboard 10, the upper end of the elastic member 510 on the elastic membrane 500 is extended from the top cover 100 (see Figure 2 ) The upper surface protrudes and abuts against the key cap 300 (see Figure 2 ). When the keyboard 10 is in use, pressing the key cap 300 will move the elastic member 510 downward, thereby causing the lower end of the elastic member 510 to contact the circuit board 600 (see Figure 2 ) to realize key operation. The following will combine Fig. 8A , Figure 8B To explain further.

[0044] Fig. 8A is a cross-sectional view of a keyboard 10 according to an embodiment of the utility model. Figure 8B yes Fig. 8A The enlarged view of the area indicated by the dotted rectangular frame B shows the relationship between the key cap 300, the scissor foot bracket 400, the top cover 100, and the elastic membrane plate 500. Fig. 8A and 8B As shown, the top cover 100 and the bottom cover 200 are snapped together, and the elastic membrane plate 500, the circuit board 600 and the foam plate 800 are sandwiched in the cavity formed by the two. It should be noted that Fig. 8A and 8B The illustrated embodiment does not include a support plate 700. Figure 8B As shown, the scissor foot bracket 400 is installed between the keycap 300 and the base 120 on the top cover 100. The elastic member 510 on the elastic membrane 500 protrudes from the upper surface of the top cover 100 through the through hole 130 provided on the top cover 100. The top of the elastic member 510 abuts against the lower surface of the keycap 300. During the operation of the keyboard 10, pressing the keycap 300 drives the scissor foot bracket 400 to be compressed in the vertical direction. At the same time, the keycap 300 contacts the top of the elastic member 510 and pushes the elastic member 510 to move downward against the elastic force generated by its own material until the lower end 512 of the elastic member 510 contacts the electrical contact (not shown) on the circuit board 600, completing the key operation. After releasing the pressure on the keycap 300, the keycap 300 returns to its initial position before being pressed under the action of the elastic force generated by the material of the elastic member 510 itself and the restoring force generated by the deformation of the scissor foot bracket 400 due to the structure.

[0045] Fig. 9FIG. 2 shows an exploded perspective view of a keyboard 20 according to another embodiment of the present invention. The keyboard 20 is different from the aforementioned keyboard 10 in that the base for mounting the scissor leg bracket is not integrated on the top cover, but is arranged on a separate base plate. Figure 2 As shown, the keyboard 20 includes a top cover 100; a base plate 900 disposed below the top cover 100; an elastic membrane plate 500 disposed below the base plate 900; a circuit board 600 disposed below the elastic membrane plate 500; a support plate 700 optionally disposed below the circuit board 600; and a bottom cover 200 disposed below the optional support plate 700. Optionally, similar to the keyboard 10, the keyboard 20 may include a foam plate (not shown) disposed between the support plate 700 and the bottom cover 200. In some embodiments, the keyboard 20 includes a scissor foot bracket 400, and the base plate 900 includes a base 920. The scissor foot bracket 400 passes through the key hole 150 on the top cover 100 and is supported on the base 920, and the keycap 300 is mounted on the scissor foot bracket 400.

[0046] like Fig. 9 As shown, the top cover 100 is a roughly rectangular frame, and the periphery includes a top cover side wall 110. Similarly, the bottom cover 200 is correspondingly a roughly rectangular frame, and the periphery includes a bottom cover side wall 210. When the keyboard 20 is in an assembled state, the top cover 100 and the bottom cover 200 are snapped together, so that the base plate 900, the elastic membrane plate 500, the circuit board 600, and the optional support plate 700 are clamped in the cavity formed by the top cover 100 and the bottom cover 200. In some embodiments, the top cover 100 and the bottom cover 200 can be further fastened together using fasteners (not shown), such as screws.

[0047] Fig. 9 The structure of the base 920 on the base plate 900 of the keyboard 20 is similar to Figure 4 The structure of the base 120 on the top cover 100 of the keyboard 10 shown is the same. Fig. 9 The elastic membrane plate 500, the circuit board 600 and the optional support plate 700 of the keyboard 20 are respectively Figure 2 The elastic membrane plate 500, the circuit board 600 and the support plate 700 of the keyboard 10 shown in FIG. 1 have the same structure. Therefore, for the detailed description of the structure of these components, please refer to the above combined Figures 2 to 7 Specific instructions.

[0048] For the purpose of illustration, the foregoing description uses specific terms to provide a thorough understanding of the described embodiments. However, it will be apparent to those skilled in the art that specific details are not required in order to practice the described embodiments. Therefore, for the purpose of illustration and description, the foregoing description of specific embodiments is provided. The foregoing description of specific embodiments is not intended to be exclusive or to limit the described embodiments to the precise form disclosed. It will be apparent to those of ordinary skill in the art that, in view of the above teachings, many modifications and variations are possible.

Claims

1. A keyboard with a scissor foot structure, characterized in that: The keyboard comprises: keycap; A scissor foot bracket arranged below the key cap; A top cover is arranged below the scissor leg bracket, wherein the upper surface of the top cover includes a plurality of key positions corresponding to the keys, and each key position area is provided with a base for mounting the scissor leg bracket and a through hole penetrating the top cover; An elastic membrane plate disposed below the top cover; A circuit board disposed below the elastic membrane; and A bottom cover is arranged below the circuit board, The elastic membrane plate comprises an elastic member protruding upwards, and the elastic member passes through the through hole on the top cover and protrudes from the upper surface of the top cover.

2. The keyboard with scissor foot structure as claimed in claim 1, characterized in that: The keyboard further comprises: A support plate is arranged below the circuit board, and the support plate is sandwiched between the circuit board and the bottom cover.

3. The keyboard with scissor foot structure as claimed in claim 2, characterized in that: The keyboard further comprises: A foam plate is arranged below the support plate, and the foam plate is sandwiched between the support plate and the bottom cover.

4. The keyboard with scissor foot structure as claimed in claim 1, characterized in that: The keyboard further comprises: A foam board is arranged below the circuit board, and the foam board is sandwiched between the circuit board and the bottom cover.

5. The keyboard with scissor foot structure as claimed in claim 1, characterized in that: The scissor leg bracket comprises an outer frame and an inner frame pivotally connected together, wherein The outer frame includes a first side beam and a second side beam that are arranged opposite to each other, and a third side beam and a fourth side beam that connect the first side beam and the second side beam, wherein both ends of the first side beam of the outer frame include a journal neck, and both ends of the second side beam of the outer frame include a first trunnion, The base includes a pair of first bearing seats, and the shaft necks are respectively received in the first bearing seats. The key cap includes a pair of slide grooves arranged on the lower surface thereof, and the first ear shafts are respectively received in the slide grooves and can slide in the slide grooves.

6. The keyboard with scissor foot structure as claimed in claim 5, characterized in that: The inner frame comprises a first side beam and a second side beam which are arranged opposite to each other, and a third side beam and a fourth side beam which connect the first side beam and the second side beam, wherein both ends of the first side beam of the inner frame respectively comprise a second ear shaft, and both ends of the second side beam of the inner frame respectively comprise a third ear shaft, The key cap includes a pair of second bearing seats arranged on the lower surface thereof, and the second trunnion is received in the second bearing seats. The base includes a pair of hooks arranged relative to the first bearing seat, and the third trunnion is received in the hooks and can slide in the hooks.

7. The keyboard with scissor foot structure as claimed in claim 5 or 6, characterized in that: The base includes a limiting protrusion which is arranged in a straight line with the first bearing seat.

8. The keyboard with scissor foot structure as claimed in claim 1, characterized in that: The top of the elastic member abuts against the lower surface of the key cap.

9. A keyboard with a scissor foot structure, characterized in that: The keyboard comprises: A top cover, the top cover comprising key holes corresponding to the keys; A scissor foot bracket, wherein the scissor foot bracket passes through the key hole on the top cover; A key cap, wherein the key cap is arranged on the scissor leg bracket; A base plate disposed below the scissor leg bracket, wherein the base plate comprises a base for mounting the scissor leg bracket and a through hole penetrating the base plate; An elastic membrane plate disposed below the base plate; A circuit board disposed below the elastic membrane; and A bottom cover is arranged below the circuit board, The elastic membrane plate comprises an elastic member protruding upwards, and the elastic member passes through the through hole on the base plate and the key hole on the top cover, and protrudes from the upper surface of the top cover.

10. The keyboard with scissor foot structure as claimed in claim 9, characterized in that: The keyboard further comprises: A support plate is arranged below the circuit board, and the support plate is sandwiched between the circuit board and the bottom cover.

11. The keyboard with scissor foot structure as claimed in claim 10, characterized in that: The keyboard further comprises: A foam plate is arranged below the support plate, and the foam plate is sandwiched between the support plate and the bottom cover.

12. The keyboard with scissor foot structure as claimed in claim 9, characterized in that: The keyboard further comprises: A foam board is arranged below the circuit board, and the foam board is sandwiched between the circuit board and the bottom cover.

13. The keyboard with scissor foot structure as claimed in claim 9, characterized in that: The scissor leg bracket comprises an outer frame and an inner frame pivotally connected together, wherein The outer frame includes a first side beam and a second side beam that are arranged opposite to each other, and a third side beam and a fourth side beam that connect the first side beam and the second side beam, wherein both ends of the first side beam of the outer frame include a journal neck, and both ends of the second side beam of the outer frame include a first trunnion, The base includes a pair of first bearing seats, and the shaft necks are respectively received in the first bearing seats. The key cap includes a pair of slide grooves arranged on the lower surface thereof, and the first ear shafts are respectively received in the slide grooves and can slide in the slide grooves.

14. The keyboard with scissor foot structure as claimed in claim 13, characterized in that: The inner frame comprises a first side beam and a second side beam which are arranged opposite to each other, and a third side beam and a fourth side beam which connect the first side beam and the second side beam, wherein both ends of the first side beam of the inner frame respectively comprise a second ear shaft, and both ends of the second side beam of the inner frame respectively comprise a third ear shaft, The key cap includes a pair of second bearing seats arranged on the lower surface thereof, and the second trunnion is received in the second bearing seats. The base includes a pair of hooks arranged relative to the first bearing seat, and the third trunnion is received in the hooks and can slide in the hooks.

15. The keyboard with scissor foot structure as claimed in claim 13 or 14, characterized in that: The base includes a limiting protrusion which is arranged in a straight line with the first bearing seat.

16. The keyboard with scissor foot structure as claimed in claim 9, characterized in that: The top of the elastic member abuts against the lower surface of the key cap.

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