A two-layer key triggering structure

Abstract

The utility model relates to a kind of trigger structure of two-layer key, belong to the technical field of household appliances, including: electric fan shell, bracket box, circuit board, first layer key and second layer key;Bracket box is fixedly arranged in the inside of electric fan shell, forms inlay installation structure, and circuit board is fixedly installed in bracket box;Metal contact or light touch switch installed on circuit board constitutes first layer key, and second layer key is formed by the pressing structure set on bracket box, and the trigger area of second layer key and first layer key on circuit board is correspondingly matched;The utility model, by first layer key is directly integrated on circuit board, and second layer key is formed using the flexible structure of bracket box, without additional setting key cap, spring and the like spare;The present scheme only needs bracket box, circuit board and flexible key structure, and the number of parts is reduced by more than 50%;First layer key and circuit board are independent module, and second layer key and bracket box are independent module, and it is convenient to independently replace or repair.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a two-layer trigger structure for a button. Background Technology

[0002] As a common household appliance, the button structure of an electric fan directly affects the user experience and product reliability. Traditional electric fan buttons typically consist of physical button caps, springs, and metal contacts. Pressing the button cap causes the metal contacts to contact the circuit board, thus enabling functions such as switching on / off and adjusting fan speed. However, this design has the following problems:

[0003] Traditional buttons require additional components such as button caps and springs, resulting in complex structures, numerous parts, increased production costs, and maintenance difficulties. The alignment of the button caps with the outer casing requires pre-drilled holes or embedded structures, and misalignment during assembly can easily lead to button malfunctions. Furthermore, the connection between the outer casing and the circuit board requires a complex fixing process, reducing production efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a two-layer trigger structure for buttons, which aims to solve the problems in the background art.

[0005] To achieve the above-mentioned utility model objectives, the first aspect of this utility model proposes a two-layer trigger structure for a button, comprising: an electric fan housing, a bracket box, a circuit board, a first-layer button, and a second-layer button;

[0006] The bracket box is fixedly disposed inside the electric fan housing to form an embedded mounting structure, and the circuit board is fixedly installed inside the bracket box;

[0007] The metal contacts or tactile switches installed on the circuit board constitute the first layer of buttons, and the pressing structure on the bracket box constitutes the second layer of buttons. The trigger areas of the second layer of buttons correspond to and cooperate with the trigger areas of the first layer of buttons on the circuit board.

[0008] Optionally, the first layer of buttons and the second layer of buttons are separate structures.

[0009] Optionally, the bracket box is provided with screw mounting holes for positioning the circuit board, and the circuit board is assembled onto the bracket box by means of screw fixing.

[0010] Optionally, an alignment structure is provided between the electric fan housing and the bracket box, the alignment structure including a guide groove disposed on the inner wall of the electric fan housing and a guide protrusion disposed on the bracket box.

[0011] Optionally, a slot is cut into the bracket box to form a pressable flexible portion, which serves as a second layer of buttons.

[0012] Optionally, the circuit board is a flexible circuit board or a rigid circuit board.

[0013] Optionally, the bracket box and the electric fan housing are connected by snaps or screws to form an integral structure.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model discloses a two-layer trigger structure for a button. By directly integrating the first-layer button onto the circuit board and utilizing the flexible structure of the bracket box to form the second-layer button, no additional button caps, springs, or other components are required. Traditional buttons require 5-6 parts (button cap, spring, contacts, bracket, and housing fixing components), while this solution only requires the bracket box, circuit board, and flexible button structure, reducing the number of parts by more than 50%. The first-layer button and circuit board are independent modules, and the second-layer button and bracket box are also independent modules, facilitating independent replacement or maintenance. For example, if the circuit board needs to be replaced due to contact wear, only the circuit board module needs to be replaced, without disassembling the entire housing, reducing maintenance costs.

[0016] 2. This utility model provides a two-layer trigger structure for a button. A guide groove and guide protrusion are provided between the fan housing and the bracket box, allowing for quick and precise alignment during assembly without complex tools. This avoids rework issues caused by misalignment between the housing and the bracket box in traditional structures. The bracket box contains slots or limiting protrusions, and the circuit board is fixed by snap-fit ​​or screws to ensure complete alignment with the trigger area of ​​the second-layer button. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a two-layer trigger structure for a button, as provided in an exemplary embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the disassembly of an electric fan housing with a two-layer trigger structure for a button, as provided in an exemplary embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of the support box and circuit board of a two-layer trigger structure for a button, as provided in an exemplary embodiment of this utility model.

[0020] Figure 4 This invention provides an exemplary embodiment of a two-layer trigger structure for a button. Figure 3 Schematic diagram of the explosion of the middle structure.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Fan housing; 2. Stand box; 3. Circuit board; 4. First layer buttons; 5. Second layer buttons.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Reference Figures 1-4 An embodiment of this utility model provides an example of a two-layer trigger structure for a button, comprising: an electric fan housing 1, a bracket box 2, a circuit board 3, a first-layer button 4, and a second-layer button 5;

[0027] The bracket box 2 is fixedly disposed inside the electric fan housing 1 to form an embedded installation structure, and the circuit board 3 is fixedly installed inside the bracket box 2;

[0028] The metal contacts or tactile switches installed on the circuit board 3 constitute the first layer of buttons 4, and the support box 2 is provided with a pressing structure to constitute the second layer of buttons 5. The second layer of buttons 5 corresponds to and cooperates with the trigger area of ​​the first layer of buttons 4 on the circuit board 3.

[0029] It should be noted that by directly integrating the first-layer button 4 onto the circuit board 3, there is no need for an additional physical button housing. This reduces the number of components required for traditional physical buttons, such as button caps and springs, simplifying the structure and lowering costs. The circuit board 3 and the bracket box 2 form an integrated assembly unit, eliminating the need for complex structures on the fan housing 1. This avoids the complex process of drilling holes or embedding traditional buttons into the fan housing 1, improving assembly efficiency. The second-layer button 5 is implemented through the pressing structure of the bracket box 2. Users do not need to press it forcefully during operation, avoiding the risk of the fan tilting or tipping over due to external force, thus meeting safety design requirements.

[0030] In some embodiments, the first layer button 4 and the second layer button 5 are separate structures.

[0031] It should be noted that the first-layer button 4 and the second-layer button 5 adopt a split structure design. That is, the first-layer button 4 and the circuit board 3 are an independent module, and the second-layer button 5 and the bracket box 2 are another independent module. The two achieve functional linkage through the alignment and cooperation of the trigger areas. The split structure facilitates independent replacement or repair. For example, if the first-layer button 4 is damaged due to a fault in the circuit board 3, only the circuit board 3 module can be replaced, without replacing the entire bracket box 2 or the fan housing 1, thus reducing maintenance costs.

[0032] In some embodiments, the bracket box 2 is provided with screw mounting holes for positioning the circuit board 3, and the circuit board 3 is assembled onto the bracket box 2 by means of screw fixing.

[0033] It should be noted that the bracket box 2 and the circuit board 3 are installed using screws through the screw mounting holes on them. This prevents misalignment of the trigger areas of the first-layer button 4 and the second-layer button 5 due to misalignment of the circuit board 3 during assembly, ensuring operational accuracy. Furthermore, the bracket box 2 and the circuit board 3 are mounted on the fan structure using screws.

[0034] In some embodiments, an alignment structure is provided between the electric fan housing 1 and the bracket box 2. The alignment structure includes a guide groove disposed on the inner wall of the electric fan housing 1 and a guide protrusion disposed on the bracket box 2.

[0035] It should be noted that the inner wall of the electric fan housing 1 is provided with a guide groove, and the bracket box 2 is provided with a matching guide protrusion to form an alignment structure. The cooperation between the guide groove and the guide protrusion allows the bracket box 2 to be quickly and accurately embedded into the electric fan housing 1 during assembly, avoiding assembly failure or rework problems caused by misalignment between the electric fan housing 1 and the bracket box 2 in traditional structures.

[0036] In some embodiments, a slot is formed on the bracket box 2 to form a pressable flexible portion, which serves as a second layer button 5.

[0037] It should be noted that a flexible area is formed on the bracket box 2 through a slotting process, serving as the second layer of buttons 5. When the user presses the button, the flexible area deforms and comes into contact with the trigger area of ​​the first layer of buttons 4, completing the signal transmission. The flexible button does not require additional button caps or springs; the function can be achieved solely through the structural design of the bracket box 2, further simplifying the structure and reducing costs.

[0038] In some embodiments, the circuit board 3 is a flexible circuit board or a rigid circuit board.

[0039] It should be noted that circuit board 3 can be a flexible circuit board or a rigid circuit board. Flexible circuit boards are suitable for scenarios that require bending or fitting against the inner wall of the bracket box 2, while rigid circuit boards are suitable for scenarios requiring high stability. Flexible circuit boards can fit against non-planar areas of the bracket box 2, such as curved inner walls, making full use of space and avoiding the layout waste caused by the shape limitations of traditional rigid circuit boards. Users can choose according to their actual needs.

[0040] In some embodiments, the bracket box 2 and the electric fan housing 1 are connected by snaps or screws to form an integral structure.

[0041] It should be noted that the bracket box 2 is connected to the electric fan housing 1 by clips or screws. The clip structure includes elastic claws and slots, while the screw structure includes threaded holes and screws.

[0042] The snap-fit ​​design allows users to quickly install or replace the bracket box 2 without tools, making it suitable for scenarios requiring frequent maintenance, such as replacing circuit boards 3. The screw connection provides higher mechanical strength, making it suitable for electric fans requiring long-term stable operation, especially in high-speed or vibration environments, effectively preventing loosening.

[0043] In practical application, the user first needs to securely connect the fan housing 1 to the bracket box 2 using clips or screws. Because the bracket box 2 and the fan housing 1 have a guide groove and guide protrusion alignment structure, precise alignment can be quickly achieved during assembly without the need for additional tools. Then, the circuit board 3 is installed onto the bracket box 2 using screws. The circuit board 3 can be a flexible or rigid circuit board, selected according to actual needs. At this point, the first layer of buttons 4, formed by metal contacts or tactile switches on the circuit board 3, perfectly corresponds to the trigger area of ​​the flexible second layer of buttons 5 formed by slots on the bracket box 2.

[0044] During operation, the user presses the flexible area of ​​the second-layer button 5, such as a protrusion or groove. The flexible structure deforms and makes contact with the metal contact or tactile switch of the first-layer button 4, completing signal transmission. For example, if the first-layer button 4 corresponds to the power button function, the user only needs to press the second-layer button 5 at a preset position on the bracket box 2 to trigger the power-on or power-off operation. Since the first-layer button 4 and the second-layer button 5 are separate structures, if the circuit board 3 needs to be replaced due to a fault, the circuit board 3 module can be disassembled separately without replacing the entire bracket box 2 or the fan housing 1, significantly reducing maintenance costs.

[0045] In addition, the embedded design of the fan housing 1 and the bracket box 2 reduces the number of physical parts required by traditional buttons, such as button caps and springs.

[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A two-layer trigger structure for a button, characterized in that, include: Electric fan housing (1), bracket box (2), circuit board (3), first layer button (4), and second layer button (5); The bracket box (2) is fixedly installed inside the electric fan housing (1) to form an embedded installation structure, and the circuit board (3) is fixedly installed on the bracket box (2); The metal contacts or tactile switches installed on the circuit board (3) constitute the first layer of buttons (4), and the pressing structure provided on the bracket box (2) constitutes the second layer of buttons (5). The second layer of buttons (5) corresponds to the trigger area of ​​the first layer of buttons (4) on the circuit board (3).

2. The two-layer trigger structure for a button according to claim 1, characterized in that, The first layer button (4) and the second layer button (5) are separate structures.

3. The two-layer trigger structure for a button according to claim 1, characterized in that, The bracket box (2) is provided with screw mounting holes for positioning the circuit board (3), and the circuit board (3) is assembled on the bracket box (2) by screw fixing.

4. The two-layer trigger structure for a button according to claim 1, characterized in that, An alignment structure is provided between the electric fan housing (1) and the bracket box (2). The alignment structure includes a guide groove provided on the inner wall of the electric fan housing (1) and a guide protrusion provided on the bracket box (2).

5. The two-layer trigger structure for a button according to claim 1, characterized in that, The bracket box (2) has a slot to form a pressable flexible part, which serves as a second layer button (5).

6. The two-layer trigger structure for a button according to claim 1, characterized in that, The circuit board (3) is a flexible circuit board or a rigid circuit board.

7. The two-layer trigger structure for a button according to claim 1, characterized in that, The bracket box (2) and the electric fan housing (1) are connected by snaps or screws to form an integral structure.

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