SOS switch of automobile

Abstract

The utility model discloses an automobile SOS switch, relates to the technical field of switches, and solves the problems of crosstalk interference and unclear state identification. An isolation cylinder is installed in the shell, the isolation cylinder is fixedly connected with the gland and movably arranged in the shell in a lifting mode, a first conduction cavity and a second conduction cavity which are independent of each other are formed in the isolation cylinder, and a shading partition plate fixed in the isolation cylinder is arranged between the first conduction cavity and the second conduction cavity. The shading partition plate extends into the through hole from the top of the isolation cylinder and penetrates through the through hole to enter the interval when the gland is stressed and pressed. Light paths of the symbol indicating lamp and the working indicating lamp are completely isolated from a physical structure, and the optical crosstalk phenomenon is thoroughly eliminated; meanwhile, the shading partition plate extends to the circuit board through hole and enters the base interval, a cross path of light rays in the two areas is further blocked in the pressing process, and it is ensured that no light interference exists before and after pressing; the overall structure remarkably improves the display independence of symbols and a work indication area, and a user can quickly and accurately recognize the switch state.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, specifically an automotive SOS switch. Background Technology

[0002] Nowadays, most cars are equipped with an SOS switch (also known as a distress switch), used to activate the SOS system (emergency rescue system) to send a distress signal in the event of a sudden emergency. Therefore, as a key component of the automotive safety system, the clarity and accuracy of the SOS switch's status indication are crucial. Existing automotive SOS switches typically have a symbol indicator area and a working indicator area. The symbol indicator area indicates the switch's function and is usually constantly lit; the working indicator area shows whether the switch has been triggered to perform the emergency call function and illuminates after the switch is pressed. However, the light source design of these two indicator areas in the current technology has significant flaws: Firstly, because the light sources of the symbol indicator area and the working indicator area are located close to each other and lack effective optical isolation, light crosstalk can easily occur, making it difficult for users to accurately determine whether the switch is in normal working condition. This could lead to misunderstandings and delayed operation in an emergency. Secondly, the brightness of the working indicator area is generally insufficient, making it difficult to clearly see in strong light or complex lighting conditions. This can also cause users to misjudge the switch's working status, affecting the reliability of the emergency call function.

[0003] For example, the existing technology patent CN206819908U discloses an SOS switch for automobiles. Although it realizes the basic status indication function, it does not optimize the optical isolation structure between the symbol indication area and the working indication area, nor does it propose an effective solution to improve the brightness of the working indicator light. Therefore, in actual use, there are still problems of cross-light interference and unclear status recognition. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art by providing an automotive SOS switch that solves the problems of crosstalk interference and unclear status recognition.

[0005] The technical solution of this utility model includes a pressure cap, a housing, a circuit board, and a base. The housing is installed on top of the base, and the circuit board is installed inside the base. The pressure cap has a working display area and a symbol display area. A gap is reserved between the circuit board and the bottom surface of the base. A working indicator light and a symbol indicator light are installed on the circuit board. A through hole is opened on the circuit board, located between the working indicator light and the symbol indicator light. An isolation cylinder is installed inside the housing. The isolation cylinder is fixedly connected to the pressure cap and is movably and vertically arranged in the housing. The isolation cylinder has two independent conducting cavities, a first conducting cavity and a second conducting cavity. The working indicator light and the symbol indicator light are located at the bottom of the first conducting cavity and the second conducting cavity, respectively. The working display area and the symbol display area are located at the top of the first conducting cavity and the second conducting cavity, respectively. A light-shielding partition fixed inside the isolation cylinder is provided between the first conducting cavity and the second conducting cavity. The light-shielding partition extends from the top of the isolation cylinder into the through hole and passes through the through hole into the gap when the pressure cap is pressed.

[0006] By adopting the above technical solution, by setting up independent first and second conductive cavities within the isolation cylinder and adding a light-shielding partition between the two cavities, the light paths of the symbol indicator and the working indicator are completely isolated from the physical structure, thus completely eliminating light crosstalk. At the same time, the light-shielding partition extends to the circuit board through-hole and enters the base gap, further blocking the cross path of light between the two areas during the pressing process, ensuring no light interference before and after pressing. In addition, the gap between the circuit board and the base provides space for the movement of the light-shielding partition, avoiding mechanical interference and ensuring the smoothness of the pressing operation. The overall structure significantly improves the display independence of the symbol and working indicator areas, allowing users to quickly and accurately identify the switch status.

[0007] In one possible design, a light guide is embedded in the first conductive cavity, and the light guide also passes through the cover and protrudes from the top surface of the cover.

[0008] The above design utilizes a light guide made of light guide material, which has efficient light transmission characteristics. This concentrates the light energy of the indicator light to the display area, reduces light loss, and significantly improves the brightness of the indicator light. It can still be clearly identified, especially in strong light environments, thus solving the problem of misjudgment caused by insufficient brightness in the prior art.

[0009] In one possible design, the light-shielding partition extends to the side to form a semi-rectangular cross-sectional shape and partially surrounds the work indicator light.

[0010] The above design creates a physical barrier with a semi-enclosed structure. By optimizing the geometry, the light-shielding area is expanded, further blocking lateral light leakage from the indicator lights to the symbol area.

[0011] In one possible design, a pressing plate is integrally connected to the outside of the isolation cylinder, and a silicone button is mounted on the circuit board, with the silicone button located at the bottom of the pressing plate.

[0012] With the above design, the pressing plate serves as the force transmission component, ensuring that the pressing action accurately triggers the deformation of the silicone button, avoiding poor contact caused by structural loosening. Moreover, the elastic reset characteristics of the silicone button provide an improved pressing feel, giving users clear tactile feedback and helping to reduce user misjudgment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the present invention;

[0015] Figure 3 This is an exploded view of the present invention;

[0016] Figure 4 This is a schematic diagram of the structure of the isolation cylinder and circuit board of this utility model;

[0017] The components include: 1. Cover; 11. Working display area; 12. Symbol display area; 2. Housing; 3. Circuit board; 31. Working indicator light; 32. Symbol indicator light; 33. Through hole; 34. Silicone button; 4. Base; 41. Spacing; 5. Isolation cylinder; 51. First conduction cavity; 52. Second conduction cavity; 53. Light-shielding partition; 54. Light guide; 55. Pressing plate. Detailed Implementation

[0018] like Figures 1-4The illustrated car SOS switch includes a cover 1, a housing 2, a circuit board 3, and a base 4. The cover 1 is used to press and illuminate the indicator light 31. The housing 2 is mounted on top of the base 4 via a snap-fit ​​structure. The circuit board 3 is placed inside the base 4. The cover 1 has a working display area 11 and a symbol display area 12, with the symbol display area 12 displaying a translucent SOS symbol. A gap 41 is reserved between the circuit board 3 and the bottom surface of the base 4. The circuit board 3 is equipped with the working indicator light 31 and a constantly lit symbol indicator light 32. The circuit board 3 has a through hole 33 along its thickness direction, located between the working indicator light 31 and the symbol indicator light 32. An isolation cylinder 5 is installed inside the housing 2. The isolation cylinder 5 and the cover 1 are connected in a tight fit via a snap-fit ​​structure, and the isolation cylinder 5 is movably and vertically mounted within the housing 2. Ribs are provided on the isolation cylinder 5 for guidance. The isolation cylinder 5 has two independent conductive cavities, a first conductive cavity 51 and a second conductive cavity 52. ​​The working indicator light 31 and the symbol indicator light 32 are respectively... The working display area 11 and the symbol display area 12 are located at the bottom of the first conductive cavity 51 and the second conductive cavity 52, respectively, so that the working indicator light 31 and the symbol indicator light 32 can transmit light to the pressure cover 1 through the first conductive cavity 51 and the second conductive cavity 52, respectively. A light-shielding partition 53 is provided between the first conductive cavity 51 and the second conductive cavity 52. ​​The light-shielding partition 53 is integrally formed with the isolation cylinder 5. The light-shielding partition 53 extends from the top of the isolation cylinder 5 into the through hole 33. When the pressure cover 1 is pressed, the light-shielding partition 53 passes through the through hole 33 and enters the interval 41. In this way, the light-shielding partition 53 inside the isolation sleeve separates the independent first conduction cavity 51 and second conduction cavity 52, realizing physical optical isolation between the symbol indicator 32 and the working indicator 31, blocking the light path of the light source in the two areas, so that the light of the constantly lit symbol indicator area and the light of the working indicator area lit after pressing are respectively conducted to the display area of ​​the pressure cover 1 through dedicated channels, avoiding mixed interference and significantly improving the accuracy and recognizability of the status indication; and, by linking the mechanical pressing action with the optical isolation structure, the synchronization of pressing operation and indicator status change is ensured while realizing functional integration, thus optimizing the user operation experience.

[0019] A light guide 54 is embedded within the first conductive cavity 51, and the light guide 54 also passes through the pressure cover 1 and protrudes from the top surface of the pressure cover 1. The light guide 54, made of a light-guiding material such as high-transmittance PC or PMMA, concentrates and guides the light from the working indicator light 31 to the outside. Thus, through the light-focusing and conducting characteristics of the light guide 54, the brightness of the working indicator light 31 is significantly enhanced, allowing the user to clearly observe the lighting status of the working display area 11 even in strong light environments. Simultaneously, the exposed design further shortens the optical path distance and reduces light loss. Combined with the optical isolation effect of the independent conductive cavity, this makes the working status indication more conspicuous and stable.

[0020] The light-shielding partition 53 extends to the side to form a semi-rectangular cross-section, partially enclosing the periphery of the working indicator light 31. In this case, the through hole 33 also needs to conform to the shape of the light-shielding partition 53, forming a semi-rectangular shape. The semi-rectangular shape has one long side and two short sides of a rectangle. The semi-enclosed light-shielding partition 53 blocks the light from the symbol indicator light 32 from diffusing into the working indicator area from the side without affecting the normal illumination of the working indicator light 31, forming a three-dimensional light-shielding barrier. Especially for scenarios where two indicator lights are arranged close together, it effectively suppresses edge light crosstalk. Moreover, this structure does not require additional components. Functional improvement is achieved by optimizing the partition shape, combining structural compactness and cost control.

[0021] An integral pressing plate 55 is connected to the outside of the isolation cylinder 5. A silicone button 34 is mounted on the circuit board 3 and is located at the bottom of the pressing plate 55. The elasticity of the silicone button 34 provides clear tactile feedback to help the user confirm that the pressing operation has been effective.

[0022] The working principle of this application is:

[0023] In normal condition (when not pressed):

[0024] The symbol indicator 32 is continuously illuminated, and the light is conducted upward through the second conductive cavity 52 to the symbol display area 12 of the "SOS" mark on the pressure cover 1, prompting the user to switch the function on and off. When the working indicator 31 is not powered, there is no light in the first conductive cavity 51, and the working display area 11 of the pressure cover 1 does not emit light. The light-shielding partition 53 extends to the through-hole 33 of the circuit board 3, blocking the light crosstalk path between the symbol indicator 32 and the working indicator 31, ensuring that the light sources in the two areas are independent.

[0025] Pressing cap 1 (triggers emergency call):

[0026] When the user presses down on the pressure cover 1, the isolation sleeve, which is fixedly connected to the pressure cover 1, moves downward within the housing 2, causing the one-piece molded pressing plate 55 to compress the silicone button 34 at the bottom. This triggers a micro-motion signal on the circuit board 3, activating the SOS emergency call system. The working indicator light 31 illuminates, and the light is concentrated and conducted through the light guide 54 in the first conduction cavity 51 to the working display area 11 of the pressure cover 1, where a red light illuminates, indicating to the user that an emergency call has been triggered. As the isolation sleeve descends, its internal light-shielding partition 53 simultaneously passes through the through hole 33 of the circuit board 3 and enters the gap 41 between the circuit board 3 and the base 4. The light-shielding partition 53 forms a three-dimensional light-shielding barrier, further physically isolating the light sources in the two areas and preventing light crosstalk.

Claims

1. A car SOS switch, comprising a cover (1), a housing (2), a circuit board (3), and a base (4), wherein the housing (2) is mounted above the base (4), the circuit board (3) is mounted inside the base (4), and the cover (1) has a working display area (11) and a symbol display area (12), characterized in that: A gap (41) is reserved between the bottom surface of the circuit board (3) and the base (4). A working indicator light (31) and a symbol indicator light (32) are installed on the circuit board (3). A through hole (33) is opened on the circuit board (3). The through hole (33) is located between the working indicator light (31) and the symbol indicator light (32). An isolation cylinder (5) is installed inside the housing (2). The isolation cylinder (5) is fixedly connected to the pressure cover (1) and is movably lifted and lowered in the housing (2). The isolation cylinder (5) is provided with a first conductive cavity (51) and a second conductive cavity (52) that are independent of each other. The working indicator light (31) and the symbol indicator light (32) are located at the bottom of the first conductive cavity (51) and the second conductive cavity (52), respectively. The working display area (11) and the symbol display area (12) are located at the top of the first conductive cavity (51) and the second conductive cavity (52), respectively. A light-shielding partition (53) fixed in the isolation cylinder (5) is provided between the first conductive cavity (51) and the second conductive cavity (52). The light-shielding partition (53) extends from the top of the isolation cylinder (5) into the through hole (33) and passes through the through hole (33) into the interval (41) when the pressure cap (1) is pressed.

2. The automotive SOS switch according to claim 1, characterized in that: The first conductive cavity (51) is fitted with a light guide (54), which also passes through the cover (1) and protrudes from the top surface of the cover (1).

3. The automotive SOS switch according to claim 1 or 2, characterized in that: The light-shielding partition (53) extends to the side to form a semi-rectangular cross-sectional shape and partially surrounds the working indicator light (31).

4. The automotive SOS switch according to claim 1 or 2, characterized in that: The isolation cylinder (5) is integrally connected to a pressing plate (55), and a silicone button (34) is installed on the circuit board (3). The silicone button (34) is located at the bottom of the pressing plate (55).

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