Switching device and flexible circuit board device for realizing linkage of switching functions

By using a U-shaped FPC to connect multiple switches in the automotive switch and utilizing a triggering mechanism to achieve circuit conduction, the problems of insufficient space and high cost are solved, realizing the interconnection control of multiple switches and stable lighting.

CN223911572UActive Publication Date: 2026-02-13SHANGHAI KOSTAL HUAYANG AUTOMOTIVE ELECTRIC +1
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Patent Information

Application Number
CN202520485876.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-18
Publication Date
2026-02-13
Estimated Expiration
2035-03-18

AI Technical Summary

Technical Problem

In the existing technology, the independent design of FPC components for each switch in the automotive industry leads to insufficient space, high cost, and lack of interconnected control of functions and lighting.

Method used

Multiple switches are connected using the same FPC, which is arranged in a U-shape to ensure independent operation of the switches. Circuit conduction is achieved through a trigger mechanism, and LED lights provide backlighting, reducing costs.

Benefits of technology

This device enables the interconnection and control of multiple switches and lighting within a limited space, maintaining stable lighting brightness and independent operation feel, while reducing device costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The flexible circuit board device for realizing the function linkage of each switch comprises a switch; the at least two switches are distributed in parallel, and the LED lamps are arranged in the switches so as to provide backlight illumination for the switches; the switches are arranged on the corresponding supports, the switches, the LED lamps and the supports are correspondingly arranged to form an illumination structure in a matched mode, and trigger mechanisms are arranged at the bottoms of the supports; the same FPC is arranged between each switch and the corresponding bracket, and the FPCs between the adjacent switches are distributed in a U shape, so that the pressing operation of the switches is prevented from being influenced; one end of the PCBA and one end of the FPC are arranged below the switch at the end, the other end of the FPC is connected with the PCBA, and the trigger mechanism is arranged on the PCBA to trigger the PCBA to supply power to the LED lamp.
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Description

TECHNICAL FIELD

[0001] The utility model relates to switch control technical field, more specifically, relate to a kind of flexible circuit board device for realizing the linkage of each switch function.In addition, it further relates to a kind of switch electric appliance comprising the flexible circuit board device for realizing the linkage of each switch function described above. BACKGROUND

[0002] In prior art, the switches of automobile industry with FPC (Flexible Printed Circuit, flexible circuit board) lighting are mostly matched with independent FPC components, each FPC is plugged into the plug of PCBA (Printed Circuit Board Assembly, printed circuit board assembly) through plug, i.e. FPC element is mainly to realize the function of single switch or the transmission of lighting signal, lacking the connection of function feeling and lighting between each switch. And, with the increase of one FPC, a plug needs to be set on PCBA, which will increase the cost of product. In addition, due to the limited space inside electric appliance product, the space of PCB is also limited, especially for touch switch, the placement position of FPC plug has certain requirements, in order to avoid the interference of FPC plug to touch signal, FPC wiring needs to be away from capacitor diaphragm plug, and there is often a problem of insufficient space.

[0003] In summary, how to realize the connection control of function and lighting of multiple switches in limited space, and avoid high cost of device, is a problem to be solved by the technical personnel in the field. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a kind of flexible circuit board device for realizing the linkage of each switch function, which can realize the connection control of function and lighting of multiple switches in limited space, and avoid high cost of device.

[0005] Another object of the utility model is to provide a kind of switch electric appliance comprising the flexible circuit board device for realizing the linkage of each switch function described above.

[0006] In order to achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of flexible circuit board device for realizing the linkage of each switch function, comprising:

[0008] switches;

[0009] LED lamp, at least two described switches are distributed in parallel, and each described switch is equipped with the LED lamp, to provide backlighting for the switch;

[0010] The bracket, each of the switches is arranged on the corresponding bracket, the switch, the LED lamp and the bracket are correspondingly arranged to form a lighting structure, the bottom of the bracket is provided with a trigger mechanism;

[0011] FPC, each of the switches and the corresponding bracket is provided with the same FPC, and the FPC between adjacent switches is distributed in a U shape to avoid affecting the pressing operation of the switch;

[0012] PCBA, one end of the FPC is arranged below the switch at the end, the other end of the FPC is connected with the PCBA, and the trigger mechanism is arranged on the PCBA to trigger the PCBA to supply power to the LED lamp.

[0013] In an embodiment, the length of the U-shaped structure of the FPC is at least 4 times or more than the pressing stroke size of the switch.

[0014] In an embodiment, the FPC is welded with the LED lamp.

[0015] In an embodiment, the FPC is welded with a regulator, which is used to adjust the brightness of the LED lamp or monitor the temperature of the LED lamp.

[0016] In an embodiment, one of the bracket and the switch is provided with a positioning hole, and the other is provided with a positioning column, the positioning hole and the positioning column are clamped and fixed, and the FPC is clamped between the switch and the corresponding bracket.

[0017] In an embodiment, the switch and the corresponding bracket are cooperatively provided with a rib structure for pressing the FPC, and the bracket and the switch are fixed by ultrasonic welding.

[0018] In an embodiment, the switch and the corresponding bracket are cooperatively provided with a buckle structure for clamping the FPC, and the bracket and the switch are fixed by riveting.

[0019] In an embodiment, the end of the PCBA is provided with a mating plug, and the FPC is connected with the PCBA through the mating plug.

[0020] In an embodiment, a base and a shell covering the base are further included, the base is used to support the PCBA, and the shell is provided with a first opening for the FPC to pass out and a second opening for the trigger mechanism to extend out.

[0021] A switch appliance includes the flexible circuit board device for realizing the linkage of each switch function according to any one of the above.

[0022] In use of the flexible circuit board device for realizing linkage of functions of each switch provided by the utility model, the FPC is fixed between each switch and the corresponding support, the FPC connecting part between the adjacent two switches is in U-shaped distribution, and sufficient connecting length is reserved to ensure that when one of the adjacent switches is stressed, the independent operation feeling of each switch can be maintained in the process of pressing and pushing the trigger mechanism to connect the circuit of the PCBA, and after the circuit is turned on, the LED lamp on the FPC directly supplies power to the LED lamp, and the LED lamp provides backlight illumination for the switch.

[0023] When the fingers of the operator press the surface of the switch, the support and the FPC are moved downward and push the trigger mechanism, the length of the part of the U-shaped structure of the FPC close to the switch is shortened, and the connecting part of the U-shaped structure close to the switch is correspondingly lengthened, the influence of the switch on the FPC can be ignored, and the force and the feeling of pressing the switch are directly provided by the trigger mechanism. And the distance between the illumination area of the LED lamp and the switch is always kept unchanged (the distance between the LED lamp and the switch is kept consistent), which ensures stable illumination brightness. When the operator presses any one of the parallel distributed switches, the principle is as shown above. Therefore, the same FPC is arranged between each switch and the corresponding support of the application, and the FPC between the adjacent switches is in U-shaped distribution, which can not only meet the demand of stable illumination brightness of the switch, but also realize independent operation feeling between the switches, and can reduce the cost of the switch and save the space of the PCBA.

[0024] In summary, the flexible circuit board device for realizing linkage of functions of each switch provided by the utility model can realize the interconnection control of the functions and illumination of multiple switches in limited space, and avoid high cost of the device.

[0025] In addition, the utility model also provides a switch electric appliance comprising the flexible circuit board device for realizing linkage of functions of each switch. ACCURATE DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only the embodiments of the utility model, and those skilled in the art can obtain other drawings according to the provided drawings without creating creative labor.

[0027] Figure 1 The structure diagram of the flexible circuit board device for realizing linkage of functions of each switch provided by the utility model.

[0028] Figure 1 In the middle:

[0029] 1 is a switch, 2 is an LED lamp, 3 is a support, 4 is an FPC, 41 is a U-shaped structure, 5 is a PCBA, 6 is a triggering mechanism, 7 is a mating connector, 8 is a base, and 9 is a shell. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] The core of the present application is to provide a flexible circuit board device for realizing the linkage of switch functions, which can realize the linkage control of multiple switch functions and lighting in limited space, and avoid high cost of the device. Another core of the present application is to provide a switch appliance comprising the flexible circuit board device for realizing the linkage of switch functions.

[0032] Please refer to Figure 1 , Figure 1 The structure diagram of the flexible circuit board device for realizing the linkage of switch functions provided by the present application.

[0033] The flexible circuit board device for realizing the linkage of switch functions provided by the present embodiment comprises:

[0034] a switch 1;

[0035] an LED lamp 2, at least two switches 1 are arranged side by side, and each switch 1 is provided with an LED lamp 2 to provide backlighting for the switch 1;

[0036] a support 3, each switch 1 is arranged on a corresponding support 3, the switch 1, the LED lamp 2 and the support 3 are arranged correspondingly to form a lighting structure, and the bottom of the support 3 is provided with a triggering mechanism 6;

[0037] an FPC 4, the same FPC 4 is arranged between each switch 1 and the corresponding support 3, and the FPC 4 between adjacent switches 1 is arranged in a U-shaped manner to avoid affecting the pressing operation of the switch 1;

[0038] a PCBA 5, one end of the FPC 4 is arranged below the switch 1 at the end, the other end of the FPC 4 is connected with the PCBA 5, and the triggering mechanism 6 is arranged on the PCBA 5 to trigger the PCBA 5 to supply power to the LED lamp 2.

[0039] It should be noted that the trigger mechanism 6 is an important part of the switch 1 device, which is responsible for converting external mechanical action into electrical signal, thereby controlling the on-off of the circuit. Different trigger mechanisms 6 are designed for different application scenarios, and the trigger mechanism 6 of the switch 1 mainly includes a direct pressure type trigger mechanism and an inclined pressure type trigger mechanism. The direct pressure type trigger mechanism has strict requirements on the installation position of the switch trigger rod and the switch 1 and the stroke of the switch trigger rod, otherwise it may cause the trigger mechanism 6 or the switch 1 to fail or be damaged. The inclined pressure type trigger mechanism often has the problems of large stroke of the switch trigger rod and low reliability.

[0040] In order to overcome the shortcomings of the trigger mechanisms of the above two traditional switches, some new trigger mechanisms 6 have emerged. For example, an improved switch trigger mechanism includes a trigger rod, a spring, an extension rod, and a limiting rod. The upper part of the trigger rod forms a protrusion, a limiting hole, and a hollow structure, the extension rod is partially inserted into the hollow structure, the upper end of the extension rod is provided with a touch piece, the extension rod forms a through hole, the limiting rod passes through the through hole and can move a certain distance along the axial direction of the extension rod relative to the extension rod, the spring is sleeved on the extension rod, and the two ends of the spring contact the touch piece and the protrusion, respectively. The limiting rod is arranged in the limiting hole and is axially limited by the limiting hole, so that the extension rod cannot come out of the hollow structure. When the switch trigger mechanism is subjected to external force, the spring can deform, and the position of the extension rod relative to the trigger rod can be changed, thereby improving the reliability and reducing the manufacturing cost. The trigger mechanism 6 of the device can be set according to the existing trigger mechanism.

[0041] In addition, it should be noted that each LED lamp 2 provides backlighting for the corresponding switch 1, and each LED lamp 2 can be powered by connecting the positive and negative electrodes of the PCBA 5 through a mating connector 7. When the trigger mechanism 6 of a certain switch 1 triggers the PCBA 5, the LED lamp 2 of the corresponding switch 1 is directly powered by the PCBA 5 to light up. Moreover, the distance between the lighting area of the LED lamp 2 and the switch 1 remains unchanged when the switch 1 is pressed, thereby ensuring stable lighting brightness.

[0042] In actual application, the shape, structure, size, position, number, and material of the switch 1, the LED lamp 2, the bracket 3, the FPC 4, and the PCBA 5 can be determined according to actual conditions and actual needs.

[0043] In use of the flexible circuit board device for realizing linkage of functions of each switch, the FPC 4 is fixed between each switch 1 and the corresponding support 3, the FPC 4 connecting part between the adjacent two switches 1 is in U-shaped distribution, and sufficient connecting length is reserved to ensure that when one of the adjacent switches 1 is stressed, the circuit of the PCBA 5 is connected in the process of being pressed and pushed to trigger the mechanism 6, the independent operation feeling of each switch 1 can be maintained, and after the circuit is turned on, the LED lamp 2 on the FPC 4 directly supplies power to the switch 1.

[0044] When the fingers of the operator press the surface of the switch 1, the support 3 and the FPC 4 are moved downward and push the trigger mechanism 6, the length of the part of the U-shaped structure 41 of the FPC 4 close to the switch 1 is shortened, the connecting part of the U-shaped structure 41 close to the switch 1 is correspondingly lengthened, the switch 1 is affected by the FPC 4 and can be ignored, the force and the feeling of pressing the switch 1 are directly provided by the trigger mechanism 6. And the distance between the lighting area of the LED lamp 2 and the switch 1 is always kept unchanged (the distance between the LED lamp 2 and the switch 1 is kept consistent), which guarantees the stable lighting brightness. When the operator presses any one of the parallel distributed switches 1, the principle is the same as the foregoing. Therefore, the same FPC 4 is arranged between each switch 1 and the corresponding support 3, and the FPC 4 between the adjacent switches 1 is in U-shaped distribution, which can meet the stable lighting brightness requirement of the switch 1, realize the independent operation feeling between the switches 1, and reduce the cost of the switch 1 and save the space of the PCBA 5.

[0045] In summary, the flexible circuit board device for realizing linkage of functions of each switch can realize the interconnection control of the functions and lighting of the multiple switches 1 in the limited space, and avoid high cost of the device.

[0046] In one embodiment, the length of the U-shaped structure 41 of the FPC 4 is at least 4 times and above the pressing stroke size of the switch 1.

[0047] It should be noted that the two parallel distributed switches 1 are taken as an example for description, the FPC 4 is fixed between the first switch 1 and the first support 3, and between the second switch 1 and the second support 3, the FPC 4 connecting part between the two switches 1 is in U-shaped distribution, and sufficient connecting length is reserved to ensure that when the first switch 1 or the second switch 1 is stressed, the circuit of the PCBA 5 is connected in the process of being pressed and pushed to trigger the first trigger mechanism 6 or the second trigger mechanism 6, the independent operation feeling of each switch 1 can be maintained.

[0048] Moreover, the stroke of the trigger mechanism 6 is generally within 2mm, the vertical stroke in the U-shaped structure 41 between the two switches 1 is twice the stroke, the transition round angle of the bottom of the U-shaped structure is 2mm (equivalent to one stroke), and the tolerance in the assembly process is added, so the length of the U-shaped structure 41 of the FPC 4 is set to 4 times the stroke, which is relatively reliable. In actual use, the length of the U-shaped structure 41 of the FPC 4 can be set.

[0049] In an embodiment, the LED lamp 2 is welded on the FPC 4. In this case, the switch 1 can be arranged in an inverted U-shaped structure 41, the FPC 4 is arranged between the switch 1 and the support 3, and the LED lamp 2 is welded on the FPC 4. The distance between the LED lamp 2 and the top of the switch 1 is fixed, so that the distance between the LED lamp 2 and the switch 1 remains unchanged during the pressing of the switch 1 by the operator, thereby ensuring the stability of the illumination brightness.

[0050] In an embodiment, an adjuster is welded on the FPC 4. The adjuster is used to adjust the brightness of the LED lamp 2 or monitor the temperature of the LED lamp 2, so that the operator can adjust the brightness of the LED lamp 2 or monitor the temperature of the LED lamp 2 in real time and perform corresponding operations. The adjuster can include a capacitor, a resistor, an inductor, or a small chip.

[0051] In an embodiment, one of the support 3 and the switch 1 is provided with a positioning hole, and the other is provided with a positioning column. The positioning hole and the positioning column are clamped and fixed, and the FPC 4 is clamped between the switch 1 and the corresponding support 3, so as to facilitate the assembly of the support 3 and the switch 1, and to ensure that the FPC 4 is clamped between the switch 1 and the corresponding support 3. A plurality of switches 1 can be connected in series through one FPC 4.

[0052] In an embodiment, a rib structure for pressing the FPC 4 is arranged between the switch 1 and the corresponding support 3. The support 3 and the switch 1 are fixed by ultrasonic welding, so that the FPC 4 is clamped between the switch 1 and the corresponding support 3, and the assembly and fixing effect of the support 3 and the switch 1 can be ensured.

[0053] In an embodiment, a buckle structure for clamping the FPC 4 is arranged between the switch 1 and the corresponding support 3. The support 3 and the switch 1 are fixed by riveting. That is, in addition to the ultrasonic welding method for fixing the switch 1 and the corresponding support 3, the riveting method can also be used to fix the switch 1 and the corresponding support 3.

[0054] In an embodiment, the end of the PCBA 5 is provided with a mating plug 7, and the FPC 4 is connected to the PCBA 5 through the mating plug 7.

[0055] It needs to be explained that the application integrates the illumination of each switch 1 on an FPC 4, provides stable illumination brightness, and reserves elastic space (U-shaped structure 41) at the FPC 4 connection place between adjacent switches 1, realizes the connection of the FPC 4 and the PCBA 5 through a mating plug 7, and in terms of illumination brightness, the switch 1 can keep the illumination brightness relatively unchanged in the static or moving state. In addition, in terms of the function and feel, each switch 1 is operated without interference, and the independence of the function and feel of each switch 1 is maintained. The device realizes the connection between each switch 1 through an FPC 4, which can greatly reduce the cost and save space, and realize more design freedom.

[0056] It also needs to be explained that the use process of the device is further illustrated by taking the example of two switches 1 arranged side by side. When the fingers of the operator press the surface of the second switch 1, the second support 3 and the FPC 4 are driven to move downward, and the second trigger mechanism 6 is pushed to move downward. The length of the part of the U-shaped structure 41 of the FPC 4 close to the second switch 1 is shortened, and the connection part close to the first switch 1 is correspondingly lengthened. The influence of the FPC 4 on the second switch 1 can be ignored, and the force and feel of pressing the second switch 1 are directly provided by the second trigger mechanism 6. The distance between the illumination area of the second LED lamp 2 and the second switch 1 is always kept unchanged, which guarantees stable illumination brightness. When the operator presses the first switch 1, the same is true, that is, the FPC 4 structure design of the application can meet the stable illumination brightness requirement of the switch 1, realize the independent operation feel between each switch 1, and reduce the cost of the switch 1 and save the space of the PCBA 5.

[0057] In an embodiment, the base 8 is used to support the PCBA 5, and the shell 9 is arranged on the base 8. The shell 9 is provided with a first opening for the FPC 4 to pass out and a second opening for the trigger mechanism 6 to extend out. For example, at least two support columns can be arranged on the base 8, and the PCBA 5 is placed on the support columns. The moving end of the PCBA 5 and the trigger mechanism 6 is arranged in the cavity formed by the base 8 and the shell 9. The moving end of the trigger mechanism 6 can extend out through the second opening, and the FPC 4 can extend out through the first opening, so as to ensure that the switch 1 control of the device is not affected. Moreover, the shell 9 and the base 8 can be detachably connected, so as to ensure the stability of the device structure and effectively ensure the components in the cavity.

[0058] In addition to the flexible circuit board device for realizing the linkage of the functions of each switch described above, the utility model also provides a switch appliance comprising the flexible circuit board device for realizing the linkage of the functions of each switch disclosed in the above embodiment. The structures of other parts of the switch appliance refer to the prior art, and will not be described herein.

[0059] It needs to be explained that the first opening and the second opening mentioned in the application file, wherein the first and the second are only to distinguish the different positions, and there is no sequence.

[0060] In addition, it also needs to be explained that the "up and down" and other indications of the orientation or position relationship in the application are based on the orientation or position relationship shown in the drawings, which is only for the convenience of simplifying the description and understanding, and is not to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0061] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the various embodiments can be referred to each other. Any combination of all the embodiments provided by the utility model is within the protection scope of the utility model, and is not described here.

[0062] The switch device and the flexible circuit board device for realizing the linkage of each switch function provided by the utility model are described in detail above. The principle and implementation mode of the utility model are described by applying specific examples in this paper. The description of the above embodiments is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary skilled persons in the technical field, the utility model can be improved and modified without departing from the principle of the utility model. These improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A flexible circuit board device for implementing a linkage of switching functions, characterized by The utility model relates to a switch (1); LED lamp (2), at least two the switch (1) parallel distribution, and each the switch (1) in all be equipped with the LED lamp (2), to the switch (1) provide back light illumination; Support (3), each the switch (1) all are equipped on corresponding the support (3), the switch (1), the LED lamp (2) and the support (3) corresponding setting, to cooperate and form the lighting structure, the bottom of support (3) is equipped with trigger mechanism (6); FPC (4), between each the switch (1) and corresponding the support (3) are equipped with same the FPC (4), and the FPC (4) between adjacent the switch (1) present U type distribution, to avoid the influence the press operation of the switch (1); PCBA (5), one end of the FPC (4) is equipped below the switch (1) of most end, the other end of the FPC (4) is connected with the PCBA (5), the trigger mechanism (6) is equipped on the PCBA (5), to trigger the PCBA (5) power supply to the LED lamp (2). The length of the U-shaped structure (41) of the FPC (4) is at least 4 times or more than the press stroke size of the switch (1).

2. The flexible circuit board device for implementing linkage of each switching function according to claim 1, wherein, The LED lamp (2) is welded on the FPC (4).

3. The flexible circuit board apparatus for implementing the linkage of each switching function according to claim 1, wherein, An adjuster is welded on the FPC (4) for adjusting the brightness of the LED lamp (2) or monitoring the temperature of the LED lamp (2).

4. The flexible circuit board apparatus for implementing linkage of each switching function according to claim 1, wherein, One of the support (3) and the switch (1) is provided with a positioning hole, and the other is provided with a positioning column, the positioning hole and the positioning column are clamped and fixed, and the FPC (4) is clamped between the switch (1) and the corresponding support (3).

5. The flexible circuit board apparatus for implementing linkage of each switching function according to any one of claims 1 to 4, characterized by, The switch (1) and the corresponding support (3) are cooperatively provided with a muscle position structure for pressing the FPC (4), and the support (3) and the switch (1) are fixed by ultrasonic welding.

6. The flexible circuit board apparatus for implementing linkage of each switching function according to any one of claims 1 to 4, characterized by, The switch (1) and the corresponding support (3) are cooperatively provided with a buckle structure for clamping the FPC (4), and the support (3) and the switch (1) are riveted.

7. The flexible circuit board apparatus for implementing linkage of each switching function according to any one of claims 1 to 4, characterized by, The end of the PCBA (5) is provided with a mating connector (7), and the FPC (4) is connected with the PCBA (5) through the mating connector (7).

8. The flexible circuit board apparatus for implementing linkage of each switching function according to any one of claims 1 to 4, characterized by, It also includes a base (8) and a shell (9) covering the base (8), the base (8) is used for supporting the PCBA (5), the shell (9) is provided with a first opening for the FPC (4) to pass out and a second opening for the trigger mechanism (6) to extend out.

9. The flexible circuit board apparatus for implementing linkage of each switching function according to any one of claims 1 to 4, characterized by, The utility model relates to a switch (1); 10. A switchgear, characterized by LED lamp (2), at least two the switch (1) parallel distribution, and each the switch (1) in all be equipped with the LED lamp (2), to the switch (1) provide back light illumination; Support (3), each the switch (1) all are equipped on corresponding the support (3), the switch (1), the LED lamp (2) and the support (3) corresponding setting, to cooperate and form the lighting structure, the bottom of support (3) is equipped with trigger mechanism (6); FPC (4), between each the switch (1) and corresponding the support (3) are equipped with same the FPC (4), and the FPC (4) between adjacent the switch (1) present U type distribution, to avoid the influence the press operation of the switch (1); PCBA (5), one end of the FPC (4) is equipped below the switch (1) of most end, the other end of the FPC (4) is connected with the PCBA (5), the trigger mechanism (6) is equipped on the PCBA (5), to trigger the PCBA (5) power supply to the LED lamp (2). The length of the U-shaped structure (41) of the FPC (4) is at least 4 times or more than the press stroke size of the switch (1). The LED lamp (2) is welded on the FPC (4). An adjuster is welded on the FPC (4) for adjusting the brightness of the LED lamp (2) or monitoring the temperature of the LED lamp (2). One of the support (3) and the switch (1) is provided with a positioning hole, and the other is provided with a positioning column, the positioning hole and the positioning column are clamped and fixed, and the FPC (4) is clamped between the switch (1) and the corresponding support (3). The switch (1) and the corresponding support (3) are cooperatively provided with a muscle position structure for pressing the FPC (4), and the support (3) and the switch (1) are fixed by ultrasonic welding. The switch (1) and the corresponding support (3) are cooperatively provided with a buckle structure for clamping the FPC (4), and the support (3) and the switch (1) are riveted. The end of the PCBA (5) is provided with a mating connector (7), and the FPC (4) is connected with the PCBA (5) through the mating connector (7). It also includes a base (8) and a shell (9) covering the base (8), the base (8) is used for supporting the PCBA (5), the shell (9) is provided with a first opening for the FPC (4) to pass out and a second opening for the trigger mechanism (6) to extend out. The utility model relates to a switch (1);