Key structure and keyboard

Abstract

The utility model relates to the technical field of keyboard keys, and discloses a key structure and a keyboard, the key structure comprises a metal bottom plate provided with a plurality of hooks, one side, away from the hooks, of the metal bottom plate is sequentially provided with a first thin film, a second thin film and a circuit board, and the hook side of the metal bottom plate is sequentially provided with a third thin film, scissor feet, silica gel particles and key caps. A contact point is arranged on one side, close to the second film, of the circuit board, a first open groove is formed in the position, corresponding to the contact point, of the second film, the circuit board is placed below the metal bottom plate, the contact point is arranged on the circuit board, and the conductive silver point on the second film is pressed through the silica gel particle contact point. And the first thin film and the second thin film are bonded by using waterproof glue and then are integrally bonded on the circuit board, so that the waterproof, dustproof and anti-oxidation protection effects are realized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of keyboard keys, and relates to a key structure and a keyboard. BACKGROUND

[0002] In the prior art, a keyboard comprises a plurality of key structures, each of which mainly comprises a keycap, a scissor structure, a membrane circuit board and a key bottom plate stacked in sequence. If it is a light-emitting keyboard, a backlight module is additionally arranged below the key bottom plate. Specifically, the membrane circuit board is provided with a switch, an elastic element is arranged between the keycap and the circuit board, the scissor structure is connected between the keycap and the key bottom plate and comprises a first frame and a second frame which can swing relative to each other, when the keycap is pressed and moved, the first frame and the second frame of the scissor structure change from an open state to a closed state, and the keycap moving downward simultaneously presses the elastic element, so that the elastic element abuts against and triggers the corresponding membrane switch, so that the keyboard generates a corresponding key signal.

[0003] However, the circuit board of the above-mentioned keyboard is exposed to the air, and when it is in contact with water or stored in humid air, there is a risk of damage to the circuit board.

[0004] Therefore, how to provide a key structure and a keyboard to realize waterproof, dustproof and oxidation-proof of the circuit board has become a technical problem to be solved urgently CONTENT OF THE INVENTION

[0005] In order to overcome the problems in the related art, the application aims to provide a key structure and a keyboard which can realize waterproof, dustproof and oxidation-proof of the circuit board.

[0006] The application is realized by the following technical scheme.

[0007] According to the first aspect, the technical scheme provides a key structure, comprising: a metal bottom plate provided with a plurality of hooks, a first membrane, a second membrane and a circuit board arranged in sequence on the side of the metal bottom plate away from the hooks, and a third membrane, a scissor structure, silica gel particles and a keycap arranged in sequence on the hook side of the metal bottom plate.

[0008] The circuit board is provided with a contact point on the side close to the second membrane.

[0009] The second membrane is provided with a first slot at a position corresponding to the contact point.

[0010] The first membrane is provided with a conductive silver point at a position corresponding to the contact point, and when the conductive silver point is in contact with the contact point through the first slot, the key function is realized.

[0011] The first membrane and the second membrane are adhered by waterproof glue, and then the whole is adhered to the circuit board, so as to realize the protection effect of waterproof, dustproof and oxidation-proof.

[0012] The present invention is further configured such that the third film has a through hole corresponding to the contact point, or the third film has a through hole corresponding to the contact point on the side near the metal base plate, and the through hole is used to assist the third film in deformation.

[0013] The present invention is further configured such that at least one LED light is integrated on the same side of the contact point of the circuit board;

[0014] The LED light and the contact point are arranged on the same layer on the conductive layer of the circuit board, and the light emission direction of the LED light is towards the light-transmitting area corresponding to the bottom of the silicone particle.

[0015] The present invention is further configured such that a second slot is provided at the position of the second film corresponding to the LED light, so as to allow the LED light to pass through the second film.

[0016] The present invention is further configured such that the first film has a protrusion at the position corresponding to the LED lamp, the protrusion having an inner cavity structure that matches the size of the LED lamp, and the protrusion covering the outside of the LED lamp to achieve waterproof and sealing functions.

[0017] The present invention is further configured such that the first film and the second film are integrally bonded to form a waterproof layer, and the waterproof layer is adhered to the circuit board to achieve the waterproof function.

[0018] The present invention is further configured such that the silicone particles are integrally molded.

[0019] The present invention is further configured such that the scissor feet are connected to the keycap and the metal base plate via mounting posts at both ends.

[0020] The present invention is further configured such that a corresponding silicone particle mounting space is formed in the middle of the scissor foot, the silicone particle is adhered to the surface of the third film and abuts against the keycap.

[0021] According to the second aspect, the present technical solution provides a keyboard, including the key structure as described in the first aspect, wherein a plurality of the key structures are arranged in an array on the keyboard.

[0022] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0023] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0024] Figure 1 This is an exploded view of the button structure shown in one embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the circuit board location shown in one embodiment of this application;

[0026] Figure 3 This is a top view of a circuit board shown in one embodiment of this application;

[0027] Figure 4 This is a cross-sectional view of the button structure shown in one embodiment of this application;

[0028] Figure 5 This is an enlarged schematic diagram of structure A shown in one embodiment of this application.

[0029] Reference numerals: 1. Metal base plate; 2. First thin film; 21. Conductive silver point; 22. Protrusion; 3. Second thin film; 31. First slot; 32. Second slot; 4. Circuit board; 41. Contact point; 42. LED light; 5. Third thin film; 51. Clear hole; 6. Scissor-switch pin; 7. Silicone pellet; 8. Keycap. Detailed Implementation

[0030] The technical solutions of some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0032] According to the first aspect, this embodiment discloses a button structure, such as... Figures 1-5 As shown, it includes: a metal base plate 1 with multiple hooks, a first film 2, a second film 3 and a circuit board 4 are arranged in sequence on the side of the metal base plate 1 away from the hooks, and a third film 5, scissor feet 6, silicone beads 7 and keycaps 8 are arranged in sequence on the hook side of the metal base plate 1.

[0033] The circuit board 4 has a contact point 41 on the side close to the second film 3;

[0034] The second film 3 has a first groove 31 at the position corresponding to the contact point 41;

[0035] The first thin film 2 is provided with a conductive silver point 21 at the position corresponding to the contact point 41. When the conductive silver point 21 makes contact with the contact point 41 through the first slot 31, the button function is realized.

[0036] It should be noted that the circuit board 4 is located below the metal base plate 1 to facilitate the assembly of the waterproof layer. At the same time, the circuit board 4 is provided with contact points 41. By pressing the contact points of the silicone pellets 7 onto the conductive silver points 31 on the second film 3, the conductive silver points 31 move and fit with the contact points 41 to realize the button function. The first film 2 and the second film 3 are bonded with waterproof adhesive to form a waterproof layer, and then the whole is glued to the circuit board 4 to achieve the protection of the circuit board 4 against water, dust and oxidation.

[0037] like Figure 2 As shown, the third film 5 is provided with a through hole 51 corresponding to the contact point 10, or the third film 5 is provided with a through hole 51 corresponding to the contact point 41 on the side of the metal base plate 1. The through hole 51 is used to assist the third film 5 in deforming.

[0038] It should be noted that the third film 5 is adhered to the outside of the metal base plate 1. When the keycap 8 is pressed and the silicone pellet 7 is moved, the third film 5 with the through hole 51 will allow the silicone pellet 7 to pass directly through. When the third film 5 with the through hole 51 on one side is squeezed by the silicone pellet 7, the area of ​​the through hole 51 of the third film 5 can deform due to its own structure, so that the bottom contact of the silicone pellet 7 squeezes the first film 2 downward.

[0039] like Figures 1-3 and Figure 4 As shown, at least one LED light 42 is integrated on the same side of the contact point 41 of the circuit board 4;

[0040] LED 42 and contact point 41 are arranged on the same layer on the conductive layer of circuit board 4, and the light emission direction of LED 42 is towards the light-transmitting area corresponding to the bottom of silicone particle 7.

[0041] It should be noted that when setting LED light 42, a corresponding light-transmitting area can be set at the bottom of silicone pellet 7 to improve the backlight effect.

[0042] like Figure 1 and Figure 2 As shown, the second film 3 has a second slot 32 at the position corresponding to the LED lamp 42, so as to allow the LED lamp 42 to pass through the second film 3.

[0043] like Figure 1 and Figure 2 As shown, the first thin film 2 has a protrusion 22 at the position corresponding to the LED lamp 42. The protrusion 22 has an inner cavity structure that matches the size of the LED lamp 42. The protrusion 22 covers the outside of the LED lamp 42 to achieve waterproof and sealing functions.

[0044] It should be noted that LED lights 42 can be set on circuit board 4 to increase the backlight function. Correspondingly, the first film 2 and the second film 3 need to be provided with protrusions 22 and second slots 32 for adaptation adjustment to avoid unclosed areas at the LED lights 42.

[0045] like Figures 1-5 As shown, the first film 2 and the second film 3 are integrally bonded to form a waterproof layer, which is then adhered to the circuit board 4 to achieve the waterproof function.

[0046] It should be noted that the first film 2 and the second film 3 together form a waterproof layer, which protects the circuit board 4 from water, dust, and oxidation.

[0047] like Figures 1-5 As shown, the silicone particles 7 are integrally molded.

[0048] It should be noted that the silicone particle 7 is an elastic element in the prior art.

[0049] like Figure 4 As shown, the scissor feet 6 are connected to the keycaps 8 and the metal base plate 1 via mounting posts at both ends.

[0050] like Figure 1 and Figure 4 As shown, the middle of the scissor foot 6 has a corresponding installation space for the silicone particle 7. The silicone particle 7 is adhered to the surface of the third film 5 and abuts against the keycap 8.

[0051] It should be noted that the scissor-switch mechanism 6 is a scissor-switch structure in the prior art, and its position and connection relationship with the keycap 8, silicone beads 7 and metal base plate 1 are all in the prior art.

[0052] According to the second aspect, this embodiment discloses a keyboard, not shown in the figure, including the key structure as in the first aspect, wherein a plurality of said key structures are arranged in an array on the keyboard.

[0053] Working principle: By placing the circuit board 4 below the metal base plate 1, it is convenient to assemble the waterproof layer. At the same time, the circuit board 4 is provided with contact points 41. The contact points of the silicone pellets 7 press the conductive silver points 31 on the second film 3, causing the conductive silver points 31 to move and fit with the contact points 41 to realize the button function. The first film 2 and the second film 3 are bonded with waterproof adhesive to form a waterproof layer, and then the whole is glued to the circuit board 4 to achieve the protection of the circuit board 4 against water, dust and oxidation.

[0054] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A button structure, characterized in that, The application relates to a key structure, which comprises a metal base plate (1) provided with a plurality of hooks, a first film (2), a second film (3) and a circuit board (4) arranged on the side of the metal base plate (1) away from the hooks in sequence, a third film (5), a scissors leg (6), a silica gel particle (7) and a key cap (8) arranged on the hook side of the metal base plate (1) in sequence, and a contact point (41) arranged on the side of the circuit board (4) close to the second film (3). The second film (3) is provided with a first slot (31) corresponding to the contact point (41). The first film (2) is provided with a conductive silver point (21) corresponding to the contact point (41), and the conductive silver point (21) is in contact with the contact point (41) through the first slot (31) to realize the key function. The third film (5) is provided with a through air-avoiding hole (51) corresponding to the contact point (41), or the third film (5) is provided with an air-avoiding hole (51) corresponding to the contact point (41) on the side close to the metal base plate (1), and the air-avoiding hole (51) is used for assisting the deformation of the third film (5). The circuit board (4) is integrated with at least one LED lamp (42) on the same side of the contact point (41).

2. The key structure according to claim 1, wherein The LED lamp (42) is arranged on the conductive layer of the circuit board (4) in the same layer as the contact point (41), and the light-emitting direction of the LED lamp (42) is towards the light-transmitting area corresponding to the bottom of the silica gel particle (7).

3. The key structure according to claim 1, wherein The second film (3) is provided with a second slot (32) corresponding to the LED lamp (42) to allow the LED lamp (42) to pass through the second film (3). The first film (2) is provided with a protrusion (22) corresponding to the LED lamp (42), the protrusion (22) has an inner cavity structure matched with the size of the LED lamp (42), and the protrusion (22) covers the outside of the LED lamp (42) to realize the waterproof and sealing functions.

4. The key structure according to claim 3, wherein The first film (2) and the second film (3) are integrally attached to form a waterproof layer, and the waterproof layer is attached to the circuit board (4) to realize the waterproof function.

5. The key structure according to claim 3, wherein The silica gel particle (7) is integrally formed.

6. The key structure according to claim 1, wherein The scissors leg (6) is connected with the key cap (8) and the metal base plate (1) through the assembling columns arranged at two ends.

7. The key structure according to claim 1, wherein The scissors leg (6) is formed with an installation space corresponding to the silica gel particle (7), the silica gel particle (7) is attached to the surface of the third film (5) and abuts against the key cap (8).

8. The key structure according to claim 1, wherein The application further discloses a keyboard comprising a plurality of the key structures.

9. The key structure according to claim 1, wherein ​ 10. A keyboard, characterized by ​

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