Balance strip key noise reduction structure

Abstract

The utility model discloses and provides a balance strip key noise reduction structure, which is simple in structure, smooth in movement and easy to install, and can effectively absorb energy generated in the process of knocking a key and reduce noise and vibration by combining with noise reduction materials, thereby improving the use experience of a user. The key comprises a substrate, a thin film circuit board, a scissor leg element, a pair of balance strip elements and a key cap, the substrate is matched with the thin film circuit board, the scissor leg element is respectively matched with the substrate and the key cap in a limiting mode, the balance strip elements are respectively matched with the substrate and the key cap in a rotating mode, and the balance strip elements are matched with the substrate and the key cap in a rotating mode. And the key cap is in floating fit with the thin film circuit board. The key is applied to the technical field of keys.

Description

Technical Field

[0001] The utility model is applied to the field of key technologies, and particularly relates to a silencing structure for a balance bar key. Background Art

[0002] With the popularization of electronic products and the increasing requirements of consumers for the use experience, the noise control of input devices such as keyboards has become an issue that cannot be ignored. Especially for balance bar keys, such as large-sized space bars, they are prone to generate significant noise and unnecessary vibrations when quickly tapped, which not only disturbs the user's operating environment but also affects the overall quality feeling of the product. In the prior art, although there are some key silencing solutions, such as covering the bottom of the key with a soft material or adding a shock pad, etc., these methods often have problems such as limited silencing effect, complex structure, and high cost. Especially for balance bar keys, due to their special structural design and large volume, traditional silencing measures are often difficult to achieve an ideal noise reduction effect. Based on the above problems, if a silencing structure for a balance bar key can be designed, which has a simple structure, smooth movement, easy installation, and combined with a silencing material, can effectively absorb the energy generated during the key tapping process, reduce noise and vibrations, thereby improving the user's use experience, then the above problems can be well solved. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a silencing structure for a balance bar key, which has a simple structure, smooth movement, easy installation, and combined with a silencing material, can effectively absorb the energy generated during the key tapping process, reduce noise and vibrations, thereby improving the user's use experience.

[0004] The technical solution adopted by the utility model is: the utility model includes a base plate, a flexible printed circuit board, scissor leg elements, a pair of balance bar elements, and a keycap. The base plate cooperates with the flexible printed circuit board. The scissor leg elements are respectively in limit cooperation with the base plate and the keycap. The balance bar elements are respectively in rotational cooperation with the base plate and the keycap. The keycap is in floating cooperation with the flexible printed circuit board. Thus, it can be seen that the base plate 1 respectively plays a role of supporting and limiting the flexible printed circuit board 2, the flexible printed circuit board 2 plays a role of floating the keycap 5, and the base plate 1 and the keycap 5 cooperate with each other to limit the scissor leg elements 3 and a pair of balance bar elements 4.

[0005] Furthermore, a plurality of scissor foot fixing blocks and a pair of balance bar buckles are arranged on the base plate. The plurality of scissor foot fixing blocks and the pair of balance bar buckles are evenly fixed on the base plate. The scissor foot fixing blocks are in limit cooperation with the scissor leg elements, and the pair of balance bar buckles are respectively in rotational cooperation with the pair of balance bar elements.

[0006] Further, an elastic member is provided on the flexible circuit board, and the elastic member passes through the scissor leg element and is in floating cooperation with the keycap.

[0007] Further, a plurality of balance bar rotation slot blocks and a plurality of fixing block buckles are provided on the keycap. The plurality of balance bar rotation slot blocks and the plurality of fixing block buckles are all fixed on the keycap. The balance bar element is in rotational cooperation with the balance bar rotation slot blocks, and the fixing block buckles are in limiting cooperation with the scissor leg element.

[0008] Further, two balance bar sliding grooves are provided on the balance bar buckle, and two balance bar limiting protrusions are respectively provided above and below the balance bar buckle. The balance bar element is in rotational cooperation with the balance bar sliding grooves, and the balance bar element is in limiting cooperation with the balance bar limiting protrusions.

[0009] Further, a limiting protrusion is provided on the keycap, and the limiting protrusion is in limiting cooperation with the elastic member on the flexible circuit board.

[0010] Further, limiting bars are provided on both sides of the scissor leg element, and both ends of the limiting bars are respectively in cooperation with the scissor foot fixing block and the fixing block buckle.

[0011] Further, a pair of balance bar limiting protrusions are integrally formed on the balance bar buckle.

[0012] Further, a pair of limiting bars are integrally formed on both sides of the scissor leg element. Description of the Drawings

[0013] Figure 1 is the structural view of the present utility model;

[0014] Figure 2 is the exploded structural view of the present utility model;

[0015] Figure 3 is the assembled structural view of the scissor leg element, the balance bar element and the keycap;

[0016] Figure 4 is the structural view of the substrate;

[0017] Figure 5 is the structural view of the flexible circuit board;

[0018] Figure 6 is the structural view of the scissor leg element;

[0019] Figure 7 is the structural view of the keycap;

[0020] Figure 8is the structural view of the balance bar buckle;

[0021] Figure 9 is Figure 1 the partial structural view of A in;

[0022] Figure 10 is the first motion structural view of the present utility model;

[0023] Figure 11 is the second motion structural view of the present utility model;

[0024] Figure 12 is the first motion structural view of the balance bar element;

[0025] Figure 13 is the second motion structural view of the balance bar element;

[0026] Figure 14 is the shaking structural view of the present utility model. Detailed implementation manners

[0027] As Figures 1 to 3 shown, in this embodiment, the present utility model includes a substrate 1, a flexible printed circuit board 2, scissor leg elements 3, a pair of balance bar elements 4, and a keycap 5. The substrate 1 cooperates with the flexible printed circuit board 2. The scissor leg elements 3 are respectively in limit cooperation with the substrate 1 and the keycap 5. The balance bar elements 4 are respectively in rotational cooperation with the substrate 1 and the keycap 5. The keycap 5 is in floating cooperation on the flexible printed circuit board 2. Thus, it can be seen that the substrate 1 plays a role of supporting and limiting for the flexible printed circuit board 2. The flexible printed circuit board 2 plays a role of floating for the keycap 5. The substrate 1 and the keycap 5 cooperate with each other to limit the scissor leg elements 3 and a pair of the balance bar elements 4.

[0028] As Figure 4 shown, in this embodiment, a plurality of scissor foot fixing blocks 10 and a pair of balance bar buckles 11 are provided on the substrate 1. The plurality of scissor foot fixing blocks 10 and the pair of balance bar buckles 11 are uniformly fixed on the substrate 1. The scissor foot fixing blocks 10 are in limit cooperation with the scissor leg elements 3. The pair of balance bar buckles 11 are respectively in rotational cooperation with the pair of balance bar elements 4. Thus, it can be seen that the substrate 1 plays a role of supporting and fixing for the scissor foot fixing blocks 10 and the balance bar buckles 11. The scissor foot fixing blocks 10 and the fixing block buckles 51 cooperate with each other to play a role of rotational limit for the scissor leg elements 3. The balance bar buckles 11 play a role of supporting and rotational limit for the balance bar elements 11.

[0029] As Figure 5As shown, in this embodiment, an elastic member 20 is provided on the flexible circuit board 2, and the elastic member 20 passes through the scissor leg element 3 and is in floating cooperation with the keycap 5. Thus, it can be seen that the flexible circuit board 2 plays a role in supporting and limiting the elastic member 20. The elastic member 20 is in limiting cooperation with the keycap 5, enabling the keycap to be in floating cooperation with the flexible circuit board 2, and the elastic member 20 also plays a role in resetting.

[0030] As Figure 7 shown, in this embodiment, a plurality of balance bar rotation slot blocks 50 and a plurality of fixed block buckles 51 are provided on the keycap 5. The plurality of balance bar rotation slot blocks 50 and the plurality of fixed block buckles 51 are both fixed on the keycap 5. The balance bar element 4 is in rotational cooperation with the balance bar rotation slot blocks 50, and the fixed block buckles 51 are in limiting cooperation with the scissor leg element 3. Thus, it can be seen that the keycap 5 plays a role in supporting and fixing the balance bar rotation slot blocks 50 and the fixed block buckles 51. The balance bar rotation slot blocks 50 play a role in limiting the rotation of the balance bar element. The fixed block buckles 51 and the scissor leg fixed block 10 cooperate with each other to play a role in limiting the rotation of the scissor leg element 3.

[0031] As Figures 8 to 9 shown, in this embodiment, two balance bar chutes 80 are provided on the balance bar buckle 11. Two balance bar limiting protrusions 81 are respectively provided above and below the balance bar buckle 11. The balance bar element 4 is in rotational cooperation with the balance bar chutes 80, and the balance bar element 4 is in limiting cooperation with the balance bar limiting protrusions 81. Thus, it can be seen that the balance bar buckle 11 plays a role in supporting the balance bar chutes 80 and the balance bar limiting protrusions 81. The balance bar element 4 rotates in the balance bar chutes 80, playing a role in limiting and supporting the balance bar element 4. The balance bar limiting protrusions 81 play a role in limiting the balance bar element 4. The balance bar limiting protrusions 81 tightly limit the left - right freedom of the balance bar element 4, reducing the space for the balance bar element to shake and reducing the generation of noise.

[0032] As Figure 7 shown, in this embodiment, a limiting protrusion 52 is provided on the keycap 5, and the limiting protrusion 52 is in limiting cooperation with the elastic member 20 on the flexible circuit board 2. Thus, it can be seen that the keycap 5 plays a role in supporting the limiting protrusion 52. When the limiting protrusion 52 is in limiting cooperation with the elastic member 20, it plays a role in limiting the elastic member 20 on the limiting protrusion 52.

[0033] As Figure 6As shown, in this embodiment, limiting bars 30 are provided on both sides of the scissor leg element 3. The two ends of the limiting bars 30 are respectively engaged with the scissor foot fixing block 10 and the fixing block buckle 51. Thus, it can be seen that the scissor leg element 3 plays a role in supporting and limiting the limiting bars 30. The limiting bars 30 are engaged with the scissor foot fixing block 10 and the fixing block buckle 51, which plays a role in limiting the scissor leg element 3 on the substrate 1.

[0034] As Figure 8 shown, in this embodiment, a pair of balance bar limiting bumps 81 are integrally formed on the balance bar buckle 11. Thus, it can be seen that the balance bar buckle 11 plays a role in supporting the balance bar limiting bumps 81. The balance bar limiting bumps 81 are integrally formed on the balance bar buckle 11, enabling the balance bar buckle 11 to rotate and cooperate with the balance bar element, and also enabling the balance bar element 4 to be limited by the balance bar limiting bumps 81. The integral formation improves the structural firmness and further enables the structure to withstand greater stress and pressure.

[0035] As Figure 6 shown, in this embodiment, a pair of limiting bars 30 are integrally formed on both sides of the scissor leg element 3. Thus, it can be seen that the scissor leg element 3 plays a role in supporting the limiting bars 30. The limiting bars 30 are integrally formed on both sides of the scissor leg element 3, enabling the scissor leg element 3 to be limited and cooperate with the substrate 1 and the keycap 5. The integral formation improves the structural firmness and further enables the structure to withstand greater stress and pressure.

[0036] In this embodiment, the working principle of the present utility model is as follows:

[0037] As Figures 1 to 10 shown, the present utility model is provided on a keyboard. When the keycap 5 is pressed, as Figure 12 shown, the balance bar element 4 is also pressed and moves downward under the rotational cooperation of the balance bar rotation slot block 50 and the balance bar buckle 11. As Figure 13 stated, until the balance bar element 4 is constrained by the balance bar limiting bumps 81. When the keycap 5 is not pressed, the elastic member 20 resets, causing the balance bar element 4 to be disengaged and limitedly cooperated with the balance bar buckle 11, and this cycle repeats.

[0038] Although the embodiments of the present utility model are described with actual solutions, they do not constitute a limitation to the meaning of the present utility model. For those skilled in the art, modifications to its implementation solutions according to this specification and combinations with other solutions are obvious.

Claims

1. A balanced bar key silencing structure, characterized in that: It includes a substrate (1), a flexible printed circuit board (2), scissor leg elements (3), a pair of balance bar elements (4), and a keycap (5). The substrate (1) cooperates with the flexible printed circuit board (2). The scissor leg elements (3) are respectively in limit cooperation with the substrate (1) and the keycap (5). The balance bar elements (4) are respectively in rotational cooperation with the substrate (1) and the keycap (5). The keycap (5) is in floating cooperation with the flexible printed circuit board (2).

2. The silencing structure of the balance bar key according to claim 1, wherein: A number of scissor foot fixing blocks (10) and a pair of balance bar buckles (11) are provided on the substrate (1). The number of scissor foot fixing blocks (10) and the pair of balance bar buckles (11) are evenly fixed on the substrate (1). The scissor foot fixing blocks (10) are in limit cooperation with the scissor leg elements (3). The pair of balance bar buckles (11) are respectively in rotational cooperation with the pair of balance bar elements (4).

3. The silencing structure of the balance bar button according to claim 1, characterized in that: An elastic member (20) is provided on the flexible printed circuit board (2). The elastic member (20) passes through the scissor leg elements (3) and is in floating cooperation with the keycap (5).

4. A silencing structure for a balance bar button according to claim 2, characterized in that: A number of balance bar rotation slot blocks (50) and a number of fixing block buckles (51) are provided on the keycap (5). The number of balance bar rotation slot blocks (50) and the number of fixing block buckles (51) are both fixed on the keycap (5). The balance bar elements (4) are in rotational cooperation with the balance bar rotation slot blocks (50). The fixing block buckles (51) are in limit cooperation with the scissor leg elements (3).

5. The silencing structure of the balance bar button according to claim 2, wherein: Two balance bar chutes (80) are provided on the balance bar buckle (11). Two balance bar limit bumps (81) are respectively provided above and below the balance bar buckle (11). The balance bar elements (4) are in rotational cooperation with the balance bar chutes (80). The balance bar elements (4) are in limit cooperation with the balance bar limit bumps (81).

6. The silencing structure of the balance bar button according to claim 3, characterized in that: A limit bump (52) is provided on the keycap (5). The limit bump (52) is in limit cooperation with the elastic member (20) on the flexible printed circuit board (2).

7. The silencing structure of the balance bar button according to claim 4, characterized in that: Limit bars (30) are provided on both sides of the scissor leg element (3). The two ends of the limit bars (30) are respectively in cooperation with the scissor foot fixing blocks (10) and the fixing block buckles (51).

8. The silencing structure of the balance bar button according to claim 5, characterized in that: The pair of balance bar limit bumps (81) are integrally formed on the balance bar buckle (11).

9. The silencing structure of the balance bar button according to claim 7, wherein: The pair of limit bars (30) are integrally formed on both sides of the scissor leg element (3).

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