Switch structure and dimmer switch

Abstract

The utility model provides a switch structure and a dimmer switch, and belongs to the field of electric switch structure design. The switch structure comprises a shell, a rotating body and a circuit board A, the rotating body comprises a knob and a rotating disc which are connected through a connecting shaft; a base is fixed to the bottom of the shell, an installation cavity and a light guide cavity are formed in the shell, and the rotating disc is installed in the installation cavity. The circuit board A is located below the rotating disc and supports the rotating disc upwards. The upper surface of the circuit board A is electrically connected with a plurality of switch units, so that the rotating disc rotates to control the switch units to be switched on and switched off; at least one LED lamp bead is arranged in the light guide cavity, a light-transmitting gear mark is formed above the light guide cavity on the upper surface of the shell, and an indicating part is arranged on the knob. According to the utility model, the structure of the switch is reasonably optimized, the integrality is good, the performance of the switch is stable, and the practicability and generalizability are good.

Description

Technical Field

[0001] The utility model relates to the technical field of electric switches, in particular to a switch structure and a dimming switch. Background Art

[0002] A switch is a common electrical component used to realize the on-off of a circuit. Various switches are usually provided on vehicles such as motorcycles and cars to control various functions, such as a lighting switch, a dimming switch, etc. These switches are combined together to form an integrated switch. In the prior art, some switches do not have a lighting display function themselves but have a separate component, resulting in relatively poor integrity and poor flexibility during installation and use; some switches have a lighting display function, but due to their complex structure, light leakage problems are likely to occur due to factors such as assembly gaps. Summary of the Utility Model

[0003] In view of this, the utility model provides a switch structure and a dimming switch, which have good integrity and can prevent light leakage problems.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] In a first aspect, the utility model provides a switch structure, including a housing, a rotating body, and a circuit board A;

[0006] The rotating body includes a knob outside the upper end of the housing and a rotating disk inside the housing. A perforation is provided at the upper end of the housing, and the rotating disk and the knob are connected by a connecting shaft passing through the perforation;

[0007] A base is fixed at the bottom of the housing. An installation cavity and a light guide cavity that are relatively independent and have an open bottom are provided inside the housing. The rotating disk is installed in the installation cavity; the circuit board A is located below the rotating disk and supports the rotating disk upward;

[0008] The circuit board A is located below the rotating disk and supports the rotating disk upward. Several switch units are electrically connected to the upper surface of the circuit board A, and the rotation of the rotating disk controls the conduction and disconnection of the switch units;

[0009] At least one LED lamp bead is provided on the circuit board A at the bottom of the light guide cavity. A light-transmitting gear mark is formed on the upper surface of the housing above the light guide cavity, and an indicating portion is provided on the knob.

[0010] In some embodiments, a hollow cylinder structure is provided inside the housing and is arranged in the vertical direction. The hollow cylinder structure has a cylindrical cavity with an open lower end, and the cylindrical cavity serves as the installation cavity. The outer circumference of the rotating disk is circular and adapted to the inner wall of the installation cavity;

[0011] The switch unit includes spaced conductive layers, and elastic conductors are provided at positions corresponding to the conductive layers at the bottom of the rotating disk, and the elastic conductors are used to conduct between different conductive layers; alternatively, the switch unit is a trigger switch fixed on the circuit board A, and a pressing part for triggering the trigger switch is provided on the rotating disk.

[0012] In some embodiments, it further includes a gear component for circumferentially limiting the rotating body. The gear component includes an elastic positioning component provided on one of the rotating body and the housing, and a plurality of spaced gear slots provided on the other of the rotating body and the housing. The gear slots are on the rotation path of the elastic positioning component, and the elastic positioning component circumferentially positions the rotating body by cooperating with the gear slots at corresponding positions.

[0013] In some embodiments, an arc-shaped plate protruding downward is provided on the inner top wall of the installation cavity. The gear slots are provided on the arc-shaped plate, and an arc-shaped groove corresponding to the arc-shaped plate is provided at the upper end of the rotating disk. The elastic positioning component is installed in the arc-shaped groove.

[0014] In some embodiments, a convex ring protruding upward is provided on the upper surface of the housing around the through hole, and the convex ring extends into the bottom end of the knob;

[0015] The gap between the through hole and the connecting shaft is sealed by a rubber ring;

[0016] A downward-facing support surface and positioning posts are provided inside the housing. Positioning holes are provided on the circuit board A. The positioning posts are inserted into the positioning holes to position the circuit board A, and the circuit board A is pressed against the support surface by the base.

[0017] In some embodiments, a conductive pin group A is further connected to the bottom of the circuit board A, and a plastic block A is fixed on the conductive pin group A;

[0018] An opening A for the lower end of the conductive pin group A to extend out and a sleeve A surrounding the opening A and extending downward are integrally provided on the base. An embedding groove A is provided inside the opening A, and the lower end of the plastic block A is embedded in the embedding groove A;

[0019] The upper part of the plastic block A abuts against the lower part of the circuit board A, and a convex post A protrudes upward from the upper end of the plastic block A. A jack A for plugging and cooperating with the convex post A is provided on the circuit board A.

[0020] In some embodiments, an installation groove is provided on the upper part of the housing on the side of the rotating body. A button that can move up and down is installed in the installation groove. A circuit board B is fixed inside the housing below the button, and a push switch is installed on the upper part of the circuit board B at a position corresponding to the button;

[0021] The upper part of the circuit board B is covered with a rubber sleeve, and a sealant layer is provided around the rubber sleeve to seal and fix the periphery of the rubber sleeve.

[0022] In some embodiments, a conductive pin group B is connected to the bottom of the circuit board B, and a plastic block B is fixed on the conductive pin group B;

[0023] An opening B for the lower end of the conductive pin group B to extend out and a sleeve B surrounding the opening B and extending downward are integrally provided on the base. An embedding groove B is provided on the inner side of the opening B, and the lower end of the plastic block B is embedded in the embedding groove B;

[0024] The upper part of the plastic block B abuts against the lower part of the circuit board B, and a convex column B protrudes upward from the upper end of the plastic block B. A jack B for plugging and matching with the convex column B is provided on the circuit board B.

[0025] In some embodiments, a shaft hole is provided at the center of the rotating disk. The upper end of the connecting shaft is fixedly connected to the knob. A clamping hole and a slot are provided on the side wall of the lower end of the connecting shaft. A clamping buckle and an inserting block are provided on the inner wall of the shaft hole. The lower end of the connecting shaft is inserted into the shaft hole. The slot and the inserting block are inserted and connected to form circumferential limitation, and the clamping hole and the clamping buckle are clamped to form axial limitation.

[0026] In a second aspect, the present invention provides a dimming switch, including the switch structure described in any one of the above.

[0027] The present invention has positive effects: The structure in the present invention is optimized. A relatively independent installation cavity and a light guide cavity are provided in the housing to accommodate the installation of the rotating disk and the LED lamp beads. The light emitted by the LED lamp beads passes through the light-transmitting gear marks and is emitted, thereby lighting up the gear marks to achieve the purpose of prompting the gear marks; providing an independent light guide cavity for the LED lamp beads can prevent light leakage, thereby improving the aesthetic degree and the sense of grade; integrating the gear mark indication and the switch control function into one makes the switch have good integrity, is conducive to installation and use, and has good practicability and popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a structural diagram of the switch structure in the present invention;

[0030] Figure 2 is Figure 1Top view of the switch structure shown

[0031] Figure 3 is a sectional view taken along line A-A in Figure 2 ;

[0032] Figure 4 is a sectional view taken along line B-B in Figure 2 ;

[0033] Figure 5 is an exploded view of the switch structure in the present utility model;

[0034] Figure 6 is the structural diagram of the housing in the present utility model when viewed from the bottom;

[0035] Figure 7 is the structural diagram of the rotating disk in the present utility model when viewed from the bottom;

[0036] Figure 8 and Figure 9 are respectively the structural diagrams of the conductive pin group A and the conductive pin group B in the present utility model.

[0037] The reference numerals shown in the figure are:

[0038] 1 - housing; 11 - perforation; 12 - installation cavity; 13 - support surface; 14 - hollow cylinder structure; 15 - arc plate; 16 - convex ring; 17 - positioning column; 18 - installation groove; 19 - light guide cavity;

[0039] 2 - knob; 20 - indicating part; 21 - connecting shaft; 22 - clamping hole; 23 - slot;

[0040] 3 - rotating disk; 31 - elastic conductor; 32 - abutting convex part; 33 - arc groove; 34 - shaft hole; 35 - buckle; 36 - inserting block;

[0041] 4 - circuit board A; 41 - conductive layer; 42 - positioning hole; 43 - conductive pin group A; 44 - plastic block A; 45 - convex column A; 46 - jack A; 47 - LED lamp bead;

[0042] 5 - base; 51 - opening A; 52 - sleeve A; 53 - embedding groove A;

[0043] 6 - elastic positioning component;

[0044] 7 - gear slot;

[0045] 8 - button;

[0046] 9 - circuit board B; 90 - push switch; 91 - rubber sleeve; 92 - conductive pin group B; 93 - plastic block B; 94 - opening B; 95 - sleeve B; 96 - embedding groove B; 97 - convex column B; 98 - jack B. Detailed implementation mode

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the protection scope of the present utility model.

[0048] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, the directional indications will also change accordingly. In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0049] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0050] The embodiments of the present utility model provide a switch structure, as Figures 1 to 9As shown, it includes a shell 1, a rotating body and a circuit board A4; the rotating body includes a knob 2 located outside the upper end of the shell 1 and a rotating disk 3 located inside the shell 1, and a through hole 11 is provided at the upper end of the shell 1, and the rotating disk 3 is connected to the knob 2 by a connecting shaft 21 passing through the through hole 11; a base 5 is fixed to the bottom of the shell 1, and the base 5 can be fixedly connected to the shell 1 by means of snap connection, screw fixing, etc.; a relatively independent installation cavity 12 and a light guide cavity 19 with an open bottom are provided in the shell 1, and the rotating disk 3 is installed in the installation cavity 12; the circuit board A4 is located below the rotating disk 3 and supports the rotating disk 3 upward; the circuit board A4 is located below the rotating disk 3 and supports the rotating disk 3 is supported upward, and the upper surface of the circuit board A4 is electrically connected to a number of switch units. The rotating disk 3 rotates to control the switching unit to be turned on and off, thereby realizing the switching control of the corresponding switch function; at least one LED lamp bead 47 is provided on the circuit board A4 at the bottom of the light guide cavity 19, and the number of the LED lamp beads 47 can be set to one, two, three or more. A light-transmitting gear mark is formed on the upper surface of the housing 1 above the light guide cavity 19 (the gear mark can be set to letters, graphics or text styles, not shown in the figure), and an indicator 20 is provided on the knob 2. When the indicator 20 points to the corresponding gear mark, it indicates the current switch gear, so that the driver can know it easily.

[0051] The above structure in this embodiment is adopted, and relatively independent installation cavity 12 and light guide cavity 19 are set in the housing 1 to accommodate the installation of the rotating disk 3 and the LED lamp bead 47. The light emitted by the LED lamp bead 47 passes through the light-transmitting gear mark, thereby lighting up the gear mark to achieve the purpose of prompting the gear mark; independently setting the light guide cavity 19 for the LED lamp bead 47 can prevent light leakage, thereby improving the aesthetics and grade; and the gear mark indication and switch control function are integrated into one, so that the switch has good integrity, is easy to install and use, and has good practicality and popularization.

[0052] In some embodiments, such as Figure 6 and Figure 7As shown, a hollow cylinder structure 14 is provided in the shell 1 along the up-down direction, and the hollow cylinder structure 14 has a cylindrical cavity with an open lower end, and the cylindrical cavity serves as the installation cavity 12. The rotating disk 3 can be installed from the bottom of the installation cavity 12, and the outer circumference of the rotating disk 3 is a circle adapted to the inner wall of the installation cavity 12, which can better limit the position of the rotating disk 3 and ensure the stability of the rotation of the rotating disk 3; the bottom of the rotating disk 3 is provided with a contact convex portion 32 abutting against the upper surface of the circuit board A4, and the bottom edge of the contact convex portion 32 abuts against the upper surface of the circuit board A4 to support the rotating disk 3 upward, while reducing the contact area between the bottom of the rotating disk 3 and the upper surface of the circuit board A4, thereby reducing the friction resistance; the contact convex portion 32 can be a closed ring, or a discontinuous ring structure, or a convex point structure, etc.

[0053] See Figure 3 、 Figure 5 and Figure 7 As shown in FIG. 1 , the switch unit includes an interval conductive layer 41, and an elastic conductor 31 is provided at the bottom of the rotating disk 3 at a position corresponding to the conductive layer 41. The elastic conductor 31 is used to conduct between different conductive layers 41. When the elastic conductor 31 contacts two conductive layers 41 at the same time, the switch unit is in a conducting state by connecting the two conductive layers 41 through the elastic conductor 31. When the elastic conductor 31 contacts the two conductive layers 41 at different times or does not contact the two conductive layers 41, the switch unit is in a disconnected state. The elastic conductor 31 in this embodiment can maintain reliable contact with the conductive layer 41 under the action of elastic force. The elastic conductor 31 can be an elastic sheet of an integral structure, or can be provided with an elastic force by a separate spring. The elastic conductor 31 has a contact portion suitable for contacting the conductive layer 41. As a variation, in actual operation, the switch unit may also be a trigger switch fixed on the circuit board A4, and a touch-pressure portion for triggering the trigger switch is provided on the rotating disk 3. The trigger switch may be a micro switch, a touch switch, or the like. When the rotating disk 3 rotates, the trigger switch is triggered by the touch-pressure portion, and the trigger switch is reset when the touch-pressure portion leaves.

[0054] In some embodiments, such as Figures 4 to 6 ​As shown, the switch structure further includes a gear component for circumferentially limiting the rotating body. When the switch is in different gears, the rotating body is circumferentially limited by the gear component to prevent it from rotating easily. The gear component includes an elastic positioning component 6 provided on one of the rotating body and the housing 1, and a plurality of spaced-apart gear slots 7 provided on the other of the rotating body and the housing 1. The gear slots 7 are in the rotation path of the elastic positioning component 6. The elastic positioning component 6 circumferentially positions the rotating body by cooperating with the gear slots 7 at corresponding positions, preventing the rotating body from rotating easily. Moreover, when controlling the rotation of the rotating body, by switching and cooperating between the elastic positioning component 6 and different gear slots 7, an obvious sense of jerk is generated to enhance the feel of gear adjustment. The elastic positioning component 6 generally includes a spring and a ball (or a pin, and the end of the pin that forms a fit with the gear slot 7 is hemispherical). Under the elastic force of the spring, the steel ball or the pin cooperates with the gear slot 7 to achieve circumferential positioning. When the steel ball or the pin slides out of the gear slot 7, the spring will be further compressed.

[0055] In a specific example, as Figure 5 and Figure 6 shown, an arc-shaped plate 15 protruding downward is provided on the inner top wall of the installation cavity 12. The gear slot 7 is provided on the arc-shaped plate 15. An arc-shaped groove 33 corresponding to the arc-shaped plate 15 is provided at the upper end of the rotating disk 3. The elastic positioning component 6 is installed in the arc-shaped groove 33. When the rotating disk 3 rotates, the arc-shaped plate 15 rotates relative to the arc-shaped groove 33. The elastic positioning component 6 moves along the arc-shaped plate 15 and circumferentially positions the rotating body by cooperating with the gear slot 7 at the corresponding position, preventing the rotating body from rotating easily.

[0056] In some embodiments, a convex ring 16 protruding upward is provided on the upper surface of the housing 1 around the through hole 11. The convex ring 16 extends into the bottom end of the knob 2. The convex ring 16 can not only play a role in blocking water and dust, but also support the knob 2 by the contact between the upper edge of the convex ring 16 and the knob 2. In order to enhance the sealing effect, the gap between the through hole 11 and the connecting shaft 21 is sealed by installing a rubber ring, so as to achieve a better protection effect.

[0057] In order to strengthen the positioning of the circuit board A4 to facilitate the rapid installation of the circuit board A4 in place, a downward support surface 13 and positioning posts 17 are provided in the housing 1. Positioning holes 42 are provided on the circuit board A4. The positioning posts 17 are inserted into the positioning holes 42 to position the circuit board A4, ensuring the position accuracy during the installation of the circuit board A4. The circuit board A4 is pressed against the support surface 13 by the base 5, and the fixation of the circuit board A4 can be quickly completed, which is convenient and firm for assembly. As shown in the appendix Figure 6 the positioning posts 17 are provided on the support surface 13. In actual setting, the positioning posts 17 may not be provided on the support surface 13.

[0058] In some embodiments, as Figure 3 and Figure 8 shown, in order to facilitate the connection between the circuit board A4 and the external wire, a conductive pin group A43 is further connected to the bottom of the circuit board A4. The conductive pin group A43 can be fixed and electrically connected to the circuit board A4 by spot welding. A plastic block A44 is fixed on the conductive pin group A43, and all the conductive pins in the conductive pin group A43 are connected together through the plastic block A44, which facilitates the connection between the conductive pin group A43 and the circuit board A4. An opening A51 for the lower end of the conductive pin group A43 to extend out and a sleeve A52 surrounding the opening A51 and extending downward are integrally provided on the base 5. An electrical plug (with a conductive socket inside the plug) is connected to the end of the external wire, and the electrical plug is inserted into the sleeve A52 (the conductive socket is inserted into the conductive pin group A43) to achieve quick wiring.

[0059] Furthermore, in combination with Figures 3 to 5 and Figure 8 shown, an embedding groove A53 is provided inside the opening A51, and the lower end of the plastic block A44 is embedded in the embedding groove A53. The upper part of the plastic block A44 abuts against the lower part of the circuit board A4, so as to support the circuit board A4 through the plastic block A44. At the same time, the plastic block A44 is further limited by the embedding groove A53. Moreover, a convex column A45 protrudes upward from the upper end of the plastic block A44, and a jack A46 for plugging and matching with the convex column A45 is provided on the circuit board A4. During assembly, the plastic block A44 can be positioned by the plugging and matching of the convex column A45 and the jack A46, so as to ensure its position accuracy.

[0060] In some embodiments, as Figure 1 and Figure 5 shown, in order to increase the functionality of the switch structure, an installation groove 18 is provided on the upper part of the housing 1 on the side of the rotating body. A button 8 that can move up and down is installed in the installation groove 18. A circuit board B9 is fixed below the button 8 inside the housing 1. The circuit board B9 can be integrated with the circuit board A4 or can be two independent circuit boards. A push switch 90 is installed at a position corresponding to the button 8 on the upper part of the circuit board B9. By pressing the button 8 downward, the corresponding push switch 90 can be triggered. The push switch 90 can adopt a switch triggered by external force pressing such as a micro switch or a tactile switch.

[0061] In order to prevent water and dust from entering the upper surface of the contact circuit board B9 through the gaps on the side of the button 8, a rubber sleeve 91 is wrapped on the upper part of the circuit board B9, and the rubber sleeve 9 plays a role in shielding and protecting the circuit board B9 and the electronic components (including the above-mentioned push switch 90) on the upper surface of the circuit board B9; moreover, a sealant layer is provided around the rubber sleeve 91, and the sealant layer can seal and fix the periphery of the rubber sleeve 91. This solution is simple and feasible and easy to implement. The sealant layer is formed after the sealant is cured.

[0062] As Figure 3 , Figure 5 and Figure 9 shown, also for the convenience of connecting the circuit board B9 to external wires, a conductive pin group B92 is connected to the bottom of the circuit board B9. The conductive pin group B92 can be fixed and electrically connected to the circuit board B9 by spot welding. A plastic block B93 is fixed on the conductive pin group B92, and all the conductive pins in the conductive pin group B92 are connected together through the plastic block B93, which is convenient for connecting the conductive pin group B92 to the circuit board B9; an opening B94 for the lower end of the conductive pin group B92 to extend out and a sleeve B95 surrounding the opening B94 and extending downward are integrally provided on the base 5. An electrical plug (with a conductive socket inside the plug) is connected to the end of the external wire, and the electrical plug is inserted into the sleeve B95 (the conductive socket is inserted into the conductive pin group B92) to achieve quick wiring.

[0063] As Figure 5 shown, an embedding groove B96 is provided inside the opening B94, and the lower end of the plastic block B93 is embedded in the embedding groove B96; the upper part of the plastic block B93 abuts against the lower part of the circuit board B9, so as to support the circuit board B9 through the plastic block B93. At the same time, the embedding groove B96 strengthens the limit of the plastic block B93, and a convex column B97 protrudes upward from the upper end of the plastic block B93. A jack B98 inserted and matched with the convex column B97 is provided on the circuit board B9. During assembly, the plastic block B93 can be positioned by the insertion and matching of the convex column B97 and the jack B98, so as to ensure its position accuracy.

[0064] In some embodiments, referring to Figure 3 , Figure 4 and Figure 5As shown, in order to facilitate the assembly of the knob 2 and the rotating disc 3, a shaft hole 34 is provided at the center of the rotating disc 3. The upper end of the connecting shaft 21 is fixedly connected to the knob 2. A clamping hole 22 and a slot 23 are provided on the side wall of the lower end of the connecting shaft 21. A clamping buckle 35 and an inserting block 36 are provided on the inner wall of the shaft hole 34. During assembly, the lower end of the connecting shaft 21 is inserted into the shaft hole 34 after passing through the through hole 12. The circumferential limit is formed by the insertion of the slot 23 and the inserting block 36, and the axial limit is formed by the clamping of the clamping hole 22 and the clamping buckle 35, so as to effectively connect the knob 2 and the rotating disc 3. When the knob 2 is controlled to rotate, the rotating disc 3 can be driven to rotate synchronously. In actual operation, other methods can also be used to fixedly connect the knob 2, the connecting shaft 21 and the rotating disc 3.

[0065] In a second aspect, an optical change switch is further provided in an embodiment of the present invention. The optical change switch can be used on vehicles such as motorcycles and electric vehicles for controlling the lights. It adopts the switch structure described in any of the above embodiments. Therefore, the optical change switch has all the advantages of the above switch structure and will not be elaborated here.

[0066] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A switch structure, comprising a housing (1), a rotating body and a circuit board A (4); The rotating body comprises a knob (2) located outside the upper end of the shell (1) and a rotating disk (3) located inside the shell (1); a through hole (11) is provided at the upper end of the shell (1); the rotating disk (3) and the knob (2) are connected via a connecting shaft (21) passing through the through hole (11); It is characterized in that A base (5) is fixed at the bottom of the housing (1); a relatively independent mounting cavity (12) and a light guide cavity (19) with an open bottom are arranged in the housing (1); the rotating disk (3) is installed in the mounting cavity (12); the circuit board A (4) is located below the rotating disk (3) and supports the rotating disk (3) upward; The upper surface of the circuit board A (4) is electrically connected to a plurality of switch units, and the rotating disk (3) rotates to control the switching units to be turned on and off; At least one LED lamp bead (47) is provided on the circuit board A (4) at the inner bottom of the light guide cavity (19), a light-transmitting gear position mark is formed on the upper surface of the housing (1) above the light guide cavity (19), and an indicating portion (20) is provided on the knob (2).

2. The switch structure according to claim 1, characterized in that: A hollow cylinder structure (14) is provided in the shell (1) along the up-down direction, the hollow cylinder structure (14) has a cylindrical cavity with an open lower end, the cylindrical cavity serves as the installation cavity (12), and the outer circumference of the rotating disk (3) is a circle that matches the inner wall of the installation cavity (12); The switch unit comprises spaced conductive layers (41), and an elastic conductor (31) is provided at a position corresponding to the conductive layer (41) at the bottom of the rotating disk (3), and the elastic conductor (31) is used to conduct different conductive layers (41); or, the switch unit is a trigger switch fixed on the circuit board A (4), and a contact pressure portion for triggering the trigger switch is provided on the rotating disk (3).

3. The switch structure according to claim 1, characterized in that: The invention also comprises a gear assembly for limiting the circumferential position of the rotating body, the gear assembly comprising an elastic positioning assembly (6) provided on one of the rotating body and the shell (1), and a plurality of gear slots (7) provided on the other of the rotating body and the shell (1) at intervals, the gear slots (7) being located on the rotation path of the elastic positioning assembly (6), and the elastic positioning assembly (6) positioning the rotating body circumferentially by cooperating with the gear slots (7) at corresponding positions.

4. The switch structure according to claim 3, characterized in that: An arc-shaped plate (15) protruding downward is provided on the inner top wall of the installation cavity (12), the gear slot (7) is provided on the arc-shaped plate (15), an arc-shaped slot (33) is provided at the upper end of the rotating disk (3) corresponding to the arc-shaped plate (15), and the elastic positioning component (6) is installed in the arc-shaped slot (33).

5. The switch structure according to claim 1, characterized in that: The upper surface of the housing (1) is provided with a convex ring (16) protruding upwards around the through hole (11), and the convex ring (16) extends into the interior of the bottom end of the knob (2); The gap between the through hole (11) and the connecting shaft (21) is sealed by a rubber ring; The housing (1) is provided with a downwardly facing support surface (13) and a positioning column (17); the circuit board A (4) is provided with a positioning hole (42); the positioning column (17) is plugged into the positioning hole (42) to position the circuit board A (4); and the circuit board A (4) is pressed against the support surface (13) through the base (5).

6. The switch structure according to claim 1, characterized in that: The bottom of the circuit board A (4) is also connected to a conductive pin group A (43), and a plastic block A (44) is fixed on the conductive pin group A (43); The base (5) is integrally provided with an opening A (51) for the lower end of the conductive pin group A (43) to extend out, and a sleeve A (52) surrounding the opening A (51) and extending downward, and an embedding groove A (53) is provided inside the opening A (51), and the lower end of the plastic block A (44) is embedded in the embedding groove A (53); The upper portion of the plastic block A (44) is in contact with the lower portion of the circuit board A (4), and a protruding column A (45) is provided on the upper end of the plastic block A (44) to protrude upwards. The circuit board A (4) is provided with a socket A (46) to be plugged and matched with the protruding column A (45).

7. The switch structure according to claim 1, characterized in that: The upper part of the housing (1) is provided with a mounting groove (18) at the side of the rotating body, a button (8) movable up and down is installed in the mounting groove (18), a circuit board B (9) is fixed below the button (8) in the housing (1), and a push switch (90) is installed on the upper part of the circuit board B (9) at a position corresponding to the button (8); The upper part of the circuit board B (9) is covered with a rubber sleeve (91), and a sealing rubber layer is provided around the rubber sleeve (91), and the sealing rubber layer is used to seal and fix the periphery of the rubber sleeve (91).

8. The switch structure according to claim 7, characterized in that: A conductive pin group B (92) is connected to the bottom of the circuit board B (9), and a plastic block B (93) is fixed on the conductive pin group B (92); The base (5) is integrally provided with an opening B (94) for the lower end of the conductive pin group B (92) to extend out, and a sleeve B (95) surrounding the opening B (94) and extending downward, and an embedding groove B (96) is provided inside the opening B (94), and the lower end of the plastic block B (93) is embedded in the embedding groove B (96); The upper part of the plastic block B (93) is in contact with the lower part of the circuit board B (9), and a protruding column B (97) is protruding upward from the upper end of the plastic block B (93), and a socket B (98) is provided on the circuit board B (9) to be plugged and matched with the protruding column B (97).

9. The switch structure according to claim 1, characterized in that: The center of the rotating disk (3) is provided with an axial hole (34); the upper end of the connecting shaft (21) is fixedly connected to the knob (2); a clamping hole (22) and a slot (23) are provided on the side wall of the lower end of the connecting shaft (21); a buckle (35) and an insert block (36) are provided on the inner wall of the axial hole (34); the lower end of the connecting shaft (21) is inserted into the axial hole (34); the slot (23) and the insert block (36) are plugged together to form a circumferential limit; the clamping hole (22) and the buckle (35) are plugged together to form an axial limit.

10. A dimmer switch, characterized in that: The invention comprises the switch structure according to any one of claims 1 to 9.

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