Scissor foot key structure

Abstract

The present application aims to provide a light, knock test with good knock sound and paragraph hand feeling of scissors foot key structure. The present application includes a circuit board, a fixed support, a scissors foot assembly, a cap, a first elastic member, a second elastic member and a magnetic member, the fixed support is arranged on the circuit board, the scissors foot assembly is arranged in connection with the fixed support, the cap is engaged with the scissors foot assembly, the first elastic member, the second elastic member and the magnetic member are arranged in the scissors foot assembly, the magnetic member is inductive cooperation with the circuit board, the scissors foot assembly includes a scissors inner frame and a scissors outer frame, the scissors outer frame and the scissors inner frame are in rotary cooperation, the first elastic member, the second elastic member and the magnetic member are arranged in the scissors inner frame, when the cap is pressed, one end of the first elastic member collides with the scissors outer frame, and the second elastic member is in push cooperation with the scissors outer frame. The present application is applied to the technical field of scissors foot key structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of scissor foot key structure, and particularly relates to a scissor foot key structure. BACKGROUND

[0002] Keyboard is a very common input device, commonly used in desktop computers, tablet computers, mobile phones, industrial control devices, processing equipment, etc. With the development of technology, notebook computers are developing towards thin and light, and the installation space provided for the keyboard is becoming smaller and smaller. Traditional mechanical keyboards are difficult to install on notebook computers. Traditional notebook keyboards often use scissor foot membrane keyboards, which have poor knocking feeling, short service life, and weak knocking sound compared to traditional mechanical keyboards. Some game users feel that the use of scissor foot membrane keyboards is far inferior to that of mechanical keyboards.

[0003] The utility model discloses a kind of key structures of scissor foot keyboard, including base, membrane circuit board, elastic member, scissor foot support and key cap, the membrane circuit board is located on base, the elastic member is located on membrane circuit board, the scissor foot support is installed on base, and the key cap is installed on the scissor foot support;The scissor foot support includes inner support and outer support, and the outer support is rotatably connected to the outer side of inner support;The middle part of the inner support is provided with an empty hole for the elastic member to pass through, and the upper end of the elastic member is in abutment with the lower side of the key cap, by pressing the key cap to make it directly contact with elastic member, with elastic member as main support component, reduce the contact between scissor foot support and elastic member, prolong service life, but the utility model lacks the knocking sound and knocking paragraph feeling required by game users in actual use process, and it is difficult to meet the needs of young user population. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a scissor foot key structure that is light, has good knocking sound and paragraph feeling.

[0005] The technical solution adopted by the present application is as follows: the present application includes a circuit board, a fixed support, a scissor foot assembly, a cap, a first elastic member, a second elastic member and a magnetic member, the fixed support is arranged on the circuit board, the scissor foot assembly is connected to the fixed support, the cap is connected to the scissor foot assembly, the first elastic member, the second elastic member and the magnetic member are arranged in the scissor foot assembly, the magnetic member is inductively matched with the circuit board, the scissor foot assembly includes a scissor inner frame and a scissor outer frame, the scissor outer frame and the scissor inner frame are rotatably matched, the first elastic member, the second elastic member and the magnetic member are arranged in the scissor inner frame, when the cap is pressed, one end of the first elastic member collides with the scissor outer frame, and the second elastic member is in push-fit cooperation with the scissor outer frame.

[0006] Further, the scissors inner frame is provided with a first fixing column, two groups of second fixing columns and a mounting slot, the first fixing column is arranged at the end of the scissors inner frame and is limited and matched with the first elastic piece, two groups of the second fixing columns are arranged at the middle part of the scissors inner frame and are limited and matched with the second elastic piece, and the mounting slot is arranged at the middle part of the scissors inner frame and is limited and matched with the magnetic piece.

[0007] Further, the bottom of the mounting slot is provided with a circular arc surface and is closely combined with the magnetic piece, and the upper part of the mounting slot is provided with a fixed buckle, and the fixed buckle is tightly matched with the magnetic piece.

[0008] Further, the scissors inner frame is further provided with a guide slot, a limiting slot and a limiting block, the guide slot is arranged below the scissors inner frame and is guided and matched with the first elastic piece, the limiting slot and the limiting block are arranged on the side of the scissors inner frame close to the second elastic piece, the limiting slot is top-pressing matched with one end of the second elastic piece, and the limiting block is clamped and connected with the other end of the second elastic piece.

[0009] Further, the first elastic piece is provided with a limiting section and a pendulum section, the limiting section is top-pressing matched with the scissors inner frame, the pendulum section is matched with the guide slot, and the pendulum section is knocking and colliding with the scissors outer frame.

[0010] Further, the scissors outer frame is provided with a limiting hook and a matching slot, the limiting hook is arranged at the lower part of the scissors outer frame and is limited and matched with the first elastic piece, and the matching slot is arranged at the upper part of the scissors outer frame and is top-pressing matched with the second elastic piece.

[0011] Further, the limiting hook is provided with a limiting surface and a guide surface, the limiting surface is top-pressing matched with the first elastic piece, there is an inclination angle of 40-60 degrees between the guide surface and the limiting surface, and the first elastic piece knocks and touches the scissors outer frame along the guide surface.

[0012] Further, the cap is provided with a plurality of clamping buckles, and the plurality of clamping buckles are respectively rotationally matched with the scissors outer frame and the scissors inner frame.

[0013] Further, the circuit board is provided with a Hall element, and the Hall element is inductively matched with the magnetic piece.

[0014] The beneficial effects of the present application are: because the scissor leg assembly is retracted when pressed, the second elastic member is pressed and compressed by the inner frame of the scissors, and as the pressing stroke gradually increases, the pendulum section of the first elastic member is driven by the guide groove of the inner frame of the scissors, and the pendulum section and the limiting surface of the limiting hook of the outer frame of the scissors slide relative to each other, and as the pressing stroke continues to increase, the pendulum section of the first elastic member hits the lower part of the limiting hook along the guide surface under the action of the elastic force, and a knocking sound is emitted and a vibration paragraph feeling is formed, so that a hand feeling similar to a mechanical keyboard is achieved. The magnetic member arranged in the inner frame of the scissors and the Hall element arranged in the circuit board are matched, the Hall element captures the change of the magnetic field to realize key conduction when pressed, the first elastic member and the second elastic member are installed and fixed in the inner frame of the scissors, the internal space position is saved, the installation and maintenance work is simplified, the production cost is reduced, and the reduction of parts effectively reduces the thickness of the key, and the key stroke is short and has the paragraph knocking feeling and the knocking sound of the mechanical keyboard. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is an exploded view of the present application;

[0016] Figure 2 is a structural schematic view of the scissor leg assembly of the present application;

[0017] Figure 3 is another view of the structural schematic view of the scissor leg assembly of the present application;

[0018] Figure 4 is a structural schematic view of the inner frame of the scissors of the present application;

[0019] Figure 5 is another view of the structural schematic view of the inner frame of the scissors of the present application;

[0020] Figure 6 is a sectional view of the inner frame of the scissors of the present application;

[0021] Figure 7 is another view of the sectional view of the inner frame of the scissors of the present application;

[0022] Figure 8 is a sectional view of the mounting groove of the inner frame of the scissors of the present application;

[0023] Figure 9 is a structural schematic view of the first elastic member of the present application;

[0024] Figure 10 is a structural schematic view of the outer frame of the scissors of the present application;

[0025] Figure 11 is another view of the structural schematic view of the outer frame of the scissors of the present application;

[0026] Figure 12 is a structural schematic view of the normal state of the present application;

[0027] Figure 13 This is a cross-sectional view of the present invention in its normal state. Detailed Implementation

[0028] like Figures 1 to 13 As shown, in this embodiment, the present invention includes a circuit board 1, a fixing bracket 2, a scissor-leg assembly, a cap 3, a first elastic element 4, a second elastic element 5, and a magnetic element 6. The fixing bracket 2 is disposed on the circuit board 1, the scissor-leg assembly is connected to the fixing bracket 2, and the cap 3 is engaged with the scissor-leg assembly. The first elastic element 4, the second elastic element 5, and the magnetic element 6 are all disposed in the scissor-leg assembly. The magnetic element 6 is inductively coupled to the circuit board 1. The scissor-leg assembly includes an inner scissor frame 7 and an outer scissor frame 8. The outer scissor frame 8 and the inner scissor frame 7 are rotatably coupled. The first elastic element 4, the second elastic element 5, and the magnetic element 6 are all disposed in the inner frame 7 of the scissors. When the cap 3 is pressed, one end of the first elastic element 4 strikes and collides with the outer frame 8 of the scissors, and the second elastic element 5 pushes against the outer frame 8 of the scissors. The fixing bracket 2 is provided with an assembly clearance hole and several fixing feet, which are respectively engaged with the lower ends of the outer frame 8 and the inner frame 7 of the scissors. When the outer frame 8, the inner frame 7, and the fixing bracket 2 are rotated and locked together, one end of the second elastic element 5 moves from the installation limit block 77 of the inner frame 7 to the sliding mating groove 82 of the outer frame 8 of the scissors, and passes through the assembly clearance hole of the fixing bracket 2. The support provides an upward elastic force to the entire scissor leg assembly. Both the outer frame 8 and the inner frame 7 of the scissors have reserved openings for cooperation with the cap 3. The cap 3 is fastened to the reserved openings by the snap fastener 31. The first elastic element 4 and the second elastic element 5 are both torsion springs. The first elastic element 4 is fixed in the inner frame 7 of the scissors. When pressed, the scissor leg assembly retracts, and the inner frame 7 of the scissors compresses the second elastic element 5. As the pressing stroke gradually increases, the pendulum segment 42 of the first elastic element 4 slides relative to the limiting surface 83 of the limiting hook 81 of the outer frame 8 of the scissors under the action of the guide groove 75 of the inner frame 7. As the pressing stroke continues to increase, the pendulum segment 42 of the first elastic element 4 disengages from the limiting surface 83 of the limiting hook 81 of the outer frame 8 of the scissors. At position 83, the pendulum segment 42 of the first elastic element 4 strikes the lower part of the limit hook 81 along the guide surface 84 under the action of elastic force, producing a striking sound and forming a tactile vibration, thus achieving a feel similar to that of a mechanical keyboard. In conjunction with the magnetic element 6 set in the inner frame 7 of the scissors and the Hall element set in the circuit board 1, the Hall element captures the change in magnetic field when pressed to realize the key conduction. The first elastic element 4 and the second elastic element 5 are installed and fixed in the inner frame 7 of the scissors, saving internal space, simplifying installation and maintenance, reducing production costs, and the reduction of parts effectively reduces the thickness of the key. The key travel is short and it has the tactile feedback and striking sound of a mechanical keyboard.

[0029] In the embodiment, the scissor inner frame 7 is provided with a first fixing column 71, two groups of second fixing columns 72 and a mounting groove 73. The first fixing column 71 is arranged at the end of the scissor inner frame 7 and is in position-limiting cooperation with the first elastic member 4. The two groups of second fixing columns 72 are arranged at the middle of the scissor inner frame 7 and are in position-limiting cooperation with the second elastic member 5. The mounting groove 73 is arranged at the middle of the scissor inner frame 7 and is in position-limiting cooperation with the magnetic member 6. The first fixing column 71 is in position-limiting cooperation with the middle coil of the first elastic member 4. The two groups of second fixing columns 72 are oppositely arranged. The coil of the second elastic member 5 is fixed between the two groups of second fixing columns 72. The first fixing column 71 and the second fixing column 72 serve as the fulcrum for the first elastic member 4 and the second elastic member 5 to rotate around the fulcrum, thereby simplifying the installation process and facilitating the daily maintenance.

[0030] In the embodiment, the bottom of the mounting groove 73 is provided with a circular arc surface and is tightly combined with the magnetic member 6. The upper part of the mounting groove 73 is provided with a fixed buckle 74. The fixed buckle 74 is in pressing cooperation with the magnetic member 6. The fixed buckle 74 extends from the upper part of the mounting groove 73 and has a certain elasticity. When the magnetic member 6 is installed, the fixed buckle 74 is retracted, so that the magnetic member 6 is smoothly entered into the mounting groove 73. After entering, the fixed buckle 74 is reset. The lower end of the fixed buckle 74 is in position-limiting pressing cooperation with the magnetic member 6. The bottom circular arc surface is designed to be fully combined with the curved surface on the magnetic member 6.

[0031] In the embodiment, the scissor inner frame 7 is further provided with a guide groove 75, a limiting groove 76 and a limiting block 77. The guide groove 75 is arranged below the scissor inner frame 7 and is in guiding cooperation with the first elastic member 4. The limiting groove 76 and the limiting block 77 are arranged on the side of the scissor inner frame 7 close to the second elastic member 5. The limiting groove 76 is in position-limiting pressing cooperation with one end of the second elastic member 5. The limiting block 77 is in clamping connection with the other end of the second elastic member 5. The guide groove 75 is a V-shaped groove. One side of the opening of the guide groove 75 is provided with a vertical surface. Under normal circumstances, the pendulum section 42 of the first elastic member 4 is tightly combined with the vertical surface of the guide groove 75. When pressed, the pendulum section 42 of the first elastic member 4 moves outward along the groove wall of the guide groove 75 to store elastic potential energy. The limiting groove 76 is used to limit the position of the fixed section of the second elastic member 5. When the second elastic member 5 is not in cooperation with the scissor outer frame 8, the extended end of the second elastic member 5 is clamped in the limiting block 77, so that the second elastic member 5 remains in a compressed state, thereby facilitating the installation and carrying and placing of the scissor inner frame 7.

[0032] In the embodiment, the first elastic member 4 is provided with a limiting section 41 and a pendulum section 42. The limiting section 41 is in position-limiting pressing cooperation with the scissor inner frame 7. The pendulum section 42 is in cooperation with the guide groove 75. The pendulum section 42 is in knocking and collision with the scissor outer frame 8.

[0033] In the embodiment, the scissor outer frame 8 is provided with a limiting hook 81 and a matching groove 82, the limiting hook 81 is arranged at the lower part of the scissor outer frame 8 and is in limiting cooperation with the first elastic member 4, the matching groove 82 is arranged at the upper part of the scissor outer frame 8 and is in top pressing cooperation with the second elastic member 5, in the pressing process, the limiting surface 83 of the limiting hook 81 can save the elastic potential energy obtained by the pendulum section 42 of the first elastic member 4 from the guide groove 75 until the pendulum section 42 of the first elastic member 4 is separated from the limiting surface 83, the elastic potential energy is released along the guide surface 84 of the limiting hook 81 and knocks the root of the limiting hook 81 to form a vibration feedback and a knocking sound, similar to the feeling and sound of a mechanical keyboard.

[0034] In the embodiment, the limiting hook 81 is provided with a limiting surface 83 and a guide surface 84, the limiting surface 83 is in top pressing cooperation with the first elastic member 4, the guide surface 84 has an inclination angle of 40-60 degrees with the limiting surface 83, the first elastic member 4 knocks the scissor outer frame 8 along the guide surface 84.

[0035] In the embodiment, the cap 3 is provided with a plurality of clamping buckles 31, and the plurality of clamping buckles 31 are respectively in rotating cooperation with the scissor outer frame 8 and the scissor inner frame 7.

[0036] In the embodiment, the circuit board 1 is provided with a Hall element, and the Hall element is in inductive cooperation with the magnetic member 6.

[0037] Working principle of the application:

[0038] When the key is in a normal state, the pendulum section 42 of the first elastic member 4 is located above the limiting hook 81, when the key is pressed, with the increase of the pressing stroke, the guide groove 75 of the scissor inner frame 7 gradually pushes the pendulum section 42 of the first elastic member 4 to the limiting surface 83 of the limiting hook 81, when the pendulum section 42 of the first elastic member 4 reaches the limiting surface 83 of the limiting hook 81, the elastic potential energy of the first elastic member 4 reaches the maximum state, then the pressing stroke continues to increase, the guide groove 75 of the scissor inner frame 7 gradually pushes the pendulum section 42 of the first elastic member 4 away from the limiting surface 83 of the limiting hook 81, at this time, the elastic potential energy of the first elastic member 4 is converted into kinetic energy, the pendulum section 42 of the first elastic member 4 knocks the limiting hook 81 to emit a sound similar to a mechanical keyboard, and thus a feeling similar to a mechanical key is generated.

[0039] Although the embodiments of the application are described in actual schemes, but do not constitute a limitation on the meaning of the application, for those skilled in the art, according to the modification of the embodiments and the combination with other schemes in the present application are obvious.

Claims

1. A scissor-switch button structure, comprising a circuit board (1), a fixing bracket (2), a scissor-switch assembly, and a cap (3), wherein the fixing bracket (2) is disposed on the circuit board (1), the scissor-switch assembly is disposed and connected to the fixing bracket (2), and the cap (3) is engaged with the scissor-switch assembly, characterized in that: The scissor-switch button structure also includes a first elastic element (4), a second elastic element (5), and a magnetic element (6) disposed in the scissor-switch assembly. The magnetic element (6) is inductively engaged with the circuit board (1). The scissor-switch assembly includes an inner scissor frame (7) and an outer scissor frame (8). The outer scissor frame (8) and the inner scissor frame (7) are rotatably engaged. The first elastic element (4), the second elastic element (5), and the magnetic element (6) are all disposed in the inner scissor frame (7). When the cap (3) is pressed, one end of the first elastic element (4) strikes and collides with the outer scissor frame (8), and the second elastic element (5) pushes against the outer scissor frame (8). The outer frame of the scissors (8) is provided with a limiting hook (81) and a mating groove (82). The limiting hook (81) is located at the lower part of the outer frame of the scissors (8) and is limited and mated with the first elastic member (4). The mating groove (82) is located at the upper part of the outer frame of the scissors (8) and is pressed and mated with the second elastic member (5). The limiting hook (81) is provided with a limiting surface (83) and a guide surface (84). The limiting surface (83) is pressed against the first elastic member (4). There is an inclination angle of 30-50 degrees between the guide surface (84) and the limiting surface (83). The first elastic member (4) taps and touches the outer frame of the scissors along the guide surface (84).

2. The scissor-switch button structure according to claim 1, characterized in that: The inner frame of the scissors (7) is provided with a first fixing post (71), two sets of second fixing posts (72) and a mounting groove (73). The first fixing post (71) is located at the end of the inner frame of the scissors (7) and is limited to the first elastic member (4). The two sets of second fixing posts (72) are located in the middle of the inner frame of the scissors (7) and are limited to the second elastic member (5). The mounting groove (73) is opened in the middle of the inner frame of the scissors (7) and is limited to the magnetic member (6).

3. The scissor-switch button structure according to claim 2, characterized in that: The bottom of the mounting groove (73) is provided with an arc surface and is closely fitted with the magnetic component (6). The upper part of the mounting groove (73) is provided with a fixing buckle (74), which is pressed and engaged with the magnetic component (6).

4. The scissor-switch button structure according to claim 2, characterized in that: The inner frame of the scissors (7) is also provided with a guide groove (75), a limiting groove (76) and a limiting block (77). The guide groove (75) is located below the inner frame of the scissors (7) and guides and cooperates with the first elastic member (4). The limiting groove (76) and the limiting block (77) are located on the side of the inner frame of the scissors (7) near the second elastic member (5). The limiting groove (76) is pressed against one end of the second elastic member (5), and the limiting block (77) is engaged with the other end of the second elastic member (5).

5. The scissor-switch button structure according to claim 4, characterized in that: The first elastic element (4) is provided with a limiting section (41) and a pendulum section (42). The limiting section (41) is pressed against the inner frame of the scissors (7), the pendulum section (42) is engaged with the guide groove (75), and the pendulum section (42) is struck and collided with the outer frame of the scissors (8).

6. The scissor-switch button structure according to claim 1, characterized in that: The cap (3) is provided with a plurality of snap fasteners (31), which are respectively rotatably engaged with the outer frame (8) of the scissors and the inner frame (7) of the scissors.

7. The scissor-switch button structure according to claim 1, characterized in that: The circuit board (1) is provided with a Hall element, which is inductively coupled with the magnetic component (6).

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