An adjustable-gear knob switch

Abstract

The application discloses a gear-adjustable rotary knob switch, which comprises a main shaft, a rotary knob, a button, a PCB board, a conductive contact bridge, a gear block and a spring. The rotary knob is sleeved outside the main shaft and has an upper boss on an inner ring. The button comprises a press block and a shaft rod. The shaft rod is arranged in the main shaft. The upper end surface of the PCB board has a functional gear area. The conductive contact bridge is arranged in the rotary knob and is buckled with the rotary knob. The conductive contact bridge is in contact with the functional gear area. The gear block is sleeved outside the main shaft and is arranged in the rotary knob and is in sliding cooperation with the rotary knob. The lower end surface of the gear block has a gear track. The gear track has a plurality of gear grooves. The upper end surface of the mounting base is provided with gear bosses which are matched with the gear grooves to realize gear switching and reminding. The gear bosses on the mounting base pass through the PCB board to realize the circumferential positioning of the PCB board. The spring is sleeved outside the main shaft and is pressed between the upper boss and the gear block. The structure is compact, small in size and stable in operation.

Description

Technical Field

[0001] This invention relates to the field of automotive component switching control technology, such as vehicle lights and vehicle air conditioning, specifically an adjustable rotary switch. Background Technology

[0002] Currently, rotatable and pressable switches have many parts and are complex to assemble.

[0003] CN210006655U discloses an adjustable rotary switch, including a panel, a rotating assembly disposed on the panel and rotatable relative to it, and a pressing assembly disposed on the rotating assembly and elastically extendable relative to it. The rotating assembly includes a knob seat detachably connected to the panel and a rotating block rotatably disposed between the knob seat and the panel. The pressing assembly includes a pressing block disposed in the middle of the rotating block and movably extendable relative to it, a push rod disposed on the pressing block for pressing the button switch, and a reset member sleeved on the push rod and pressing between the pressing block and the rotating block. The bottom surface of the rotating block has a groove along its circumference, and the panel has a ball for elastically pressing the groove. A collar is sleeved inside the rotating block. The ring has a first guide post through which the push rod passes, and the reset member presses against the first guide post and the pressing block; the pressing block has a guide rod, and the panel has a second guide post for the guide rod to extend and retract; the bottom of the rotating block has a rotating retaining strip along its edge, and the knob seat has a rotating platform for the rotating retaining strip to rotate, and the rotating platform has a first annular protrusion that abuts against the rotating retaining strip; the panel has a latch, and the bottom of the knob seat has a latch that engages with the latch, and the panel has a second annular protrusion that abuts against the bottom of the rotating block; the bottom of the ball has a pressing block, and a pressing spring is provided between the pressing block and the ball; the panel has a through hole for the ball to elastically extend and retract to press against the groove.

[0004] The aforementioned switch has many parts and is complex to assemble. Specifically, it has the following drawbacks:

[0005] By mounting the rotating component on the panel and then mounting the panel on the outer casing, a large mounting space is required, and high machining precision is needed. The knob block is connected to the panel through a collar and a rotating seat. It also needs to be limited by the rotating clip abutting against the first annular protrusion and the bottom of the rotating block abutting against the second annular protrusion. This limits the relative mating positions between the components. There are many parts, the space is large, and the assembly of the parts is complex and the stability is not high.

[0006] By providing a groove on the bottom circumference of the rotating block and a ball bearing on the panel for elastically pressing the groove, the spring is offset from the center of the rotating block. Its restoring force acts on the periphery of the rotating block, which will tilt and lift the rotating block, causing displacement and structural instability.

[0007] Since the rotary switch achieves adjustment by cooperating with several function positions on the PCB board through the contact plate, one of the contact plate and the PCB board is fixed on the panel or the outer shell, while the other plate is directly or indirectly fixed to the knob block. The installation space is small, the assembly structure of the contact plate and the PCB board is complex, and the required fitting precision is high. Summary of the Invention

[0008] This invention overcomes the shortcomings of the prior art and provides a rotary switch with an adjustable range that is compact, small in size, and stable in operation.

[0009] To achieve the above objectives, the present invention provides the following technical solution: an adjustable rotary switch, comprising:

[0010] The spindle is hollow inside and has a mounting base plate on it;

[0011] A knob is sleeved on the outside of the main shaft, and its inner ring has an upper boss that rotates with the upper part of the main shaft. The upper boss has a mounting port in the middle that allows the upper end of the main shaft to pass through. The knob has an inner cavity.

[0012] The button includes a pressing block located in the center of the knob and movable relative to it, and a shaft located in the center of the pressing block, the shaft passing through a main shaft.

[0013] A PCB board is sleeved outside the spindle and positioned on the upper end of the mounting base plate. The upper surface of the PCB board has a ring-shaped functional gear area.

[0014] A conductive contact bridge is located inside the knob and is snapped together with the knob. The conductive contact bridge abuts against the function switch area on the PCB board below.

[0015] A gear shift block, sleeved outside the main shaft, is located within the inner cavity of the knob and slides against it. The lower end face of the gear shift block has a ring-shaped gear shift track with several gear shift slots. Correspondingly, the upper end face of the mounting base plate has a protruding gear shift protrusion that engages with the aforementioned gear shift slots to provide a gear shift reminder. The gear shift protrusion on the mounting base plate also passes through the PCB board, achieving circumferential positioning of the PCB board.

[0016] A spring, sleeved on the main shaft and pressing against the upper boss and the gear shift block, forces the gear shift track at the lower end of the gear shift block to abut against the gear shift protrusion.

[0017] When the knob is rotated under force, it can drive the gear block and the conductive contact bridge to rotate together. The circumferential movement of the end of the conductive contact bridge in the aforementioned functional gear area realizes the corresponding gear function switching. At this time, the gear protrusion is engaged in the corresponding gear slot on the gear block.

[0018] Compared with the prior art, the advantages of the rotary switch of the present invention are as follows:

[0019] By setting the spindle, the knob is mounted on the spindle, and the gear block is connected to the knob to achieve synchronous rotation. The conductive contact bridge is snapped onto the gear block for assembly and positioning. No welding is required. The structure is compact, easy to assemble, and has a long service life. The function output is achieved by moving with the knob. The conductive contact bridge makes contact with the function gear area on the PCB board, resulting in a low failure rate and stable operation.

[0020] The spring is sleeved outside the main shaft and presses against the upper boss and the gear block. When the knob is operated, the gear protrusion will hit the corresponding gear slot after the gear is adjusted to the correct position to remind that the adjustment is in place, thus realizing the gear feel function.

[0021] The aforementioned knob, gear block, conductive contact bridge, and spring can be assembled into a knob assembly that can rotate together;

[0022] The PCB board is mounted on the mounting base plate. The PCB board is circumferentially positioned by the stop protrusions on the mounting base plate, which prevent it from rotating with the knob. The PCB board and the main shaft can be assembled into a switch fixing assembly.

[0023] The button and knob are assembled, and their shafts are also inserted into the main shaft. Pressing them activates the PUSH function. The button and knob assembly, along with the switch fixing assembly, forms a rotary switch assembly. The button and knob trigger the switch position by pressing or rotating them.

[0024] The design incorporates a knob, shift block, spring, and main shaft coaxially, with the spring resting against the top of the shift block. This ensures the shift block is subjected to force around its circumference, preventing it from shifting during movement, making operation easier and more controllable, and enhancing product reliability and stability. Simultaneously, it reduces the internal space required for the knob, addressing the space constraints of combination switches. The overall structure is simpler than existing designs, with fewer parts and a more compact design, reducing product development costs. All parts interlock securely, ensuring robustness and reliability.

[0025] Preferably, the conductive contact bridge has a connecting piece and a first contact piece extending from the connecting piece to the function position area. The first contact piece is arc-shaped and arranged around the outer periphery of the position block. The connecting piece is snap-fitted to one side of the knob. The arc-shaped arrangement of the first contact piece around the outer periphery of the position block reduces the space occupied inside the knob.

[0026] Preferably, the first contact piece is inclined downwards towards the PCB board from the connecting piece, and the conductive contact end on the first contact piece is bent, with the surface of the conductive contact end that abuts against the function position area being an arc surface. The inclination of the contact piece facilitates contact with the PCB board for conductivity, and the bending of the conductive contact end on the contact piece results in a large contact area with the function position area, ensuring smooth movement.

[0027] Preferably, the knob has a first snap-fit ​​portion on one side of its inner ring. A positioning groove is formed at the bottom of the first snap-fit ​​portion, and the connecting piece is inserted into the positioning groove and snap-fitted to the knob. A fixing piece is bent at the bottom of the connecting piece, and the fixing piece is also connected to the bottom of the first snap-fit ​​portion by screws. Through the connection of the connecting piece, the fixing piece, and the first snap-fit ​​portion, multiple connections are made, ensuring stable connection, and the connecting piece inserted into the positioning groove is not easily broken.

[0028] Preferably, the upper surface of the PCB board, on the opposite side of the function position area, also has a ring-shaped conductive contact area. The conductive contact bridge further includes a second contact piece extending from the connecting piece to the conductive contact area. The second contact piece is arc-shaped and arranged around the outer periphery of the position block. The second contact piece and the first contact piece are integrally connected to both sides of the connecting piece. The two conductive structures are stable, the structural design is reasonable, and the internal space occupied by the knob is small.

[0029] Preferably, the lower end of the gear shift block has at least two gear shift tracks, and at least two corresponding gear shift protrusions are also provided on the mounting base plate. This multiple gear shift track structure prevents the gear shift block from shifting to one side during operation.

[0030] Preferably, the bottom of the button is provided with a locking foot, and the bottom surface of the upper boss has a second locking part. The second locking part has a first movable groove into which the locking foot can be inserted. After the locking foot enters the first movable groove, it can be snapped outward onto the bottom surface of the upper boss. The locking foot can slide in the first movable groove.

[0031] The gear shift block has a locking block on its outer periphery. The second locking part also has a second movable groove on one side of the corresponding gear shift block for the locking block to insert into. After the locking block enters the second movable groove, it can be locked onto the inner bottom wall of the second movable groove by the action of a spring. The locking block can slide within the second movable groove. The button adopts a snap-fit ​​structure matching the knob design, and the gear shift block adopts a snap-fit ​​structure matching the knob design, which is convenient to operate and can slide up and down inside without easily falling out.

[0032] Preferably, the upper boss has an upper spring mounting groove on its bottom surface and around the mounting opening, and the gear block has a lower spring mounting groove. The upper and lower ends of the spring abut against the upper and lower mounting grooves, respectively. The gear block has a support foot on its upper end and around the lower mounting groove. When the gear block is mounted on the knob, the support foot is also inserted between two adjacent second locking parts. The spring is fixed against the upper and lower mounting grooves, and the gear block is also inserted between two adjacent second locking parts via the support foot, achieving circumferential limiting.

[0033] Preferably, the outer periphery of the upper end of the spindle has a groove, and a plurality of mating blocks are arranged at intervals around the upper end of the upper boss and around the outer periphery of the mounting port. The inner side of the mating blocks has a movable protrusion that can mate with the groove, and the movable protrusion can rotate within the groove. The interval arrangement of the plurality of mating blocks facilitates the installation of the spindle, and the small contact area of ​​each movable protrusion within the groove facilitates easy movement. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of a specific embodiment of the present invention;

[0035] Figure 2 This is a cross-sectional view of a specific embodiment of the present invention;

[0036] Figure 3 This is an exploded view of a specific embodiment of the present invention;

[0037] Figure 4 This is a diagram showing the fit between the gear shift block and the main shaft in a specific embodiment of the present invention;

[0038] Figure 5 This is a diagram showing the internal structure of the knob in a specific embodiment of the present invention;

[0039] Figure 6 This is a structural diagram of the knob in a specific embodiment of the present invention;

[0040] Figure 7 This is a structural diagram of the spindle in a specific embodiment of the present invention;

[0041] Figure 8 This is a structural diagram of the gear shift block in a specific embodiment of the present invention;

[0042] Figure 9 This is a structural diagram of the PCB board in a specific embodiment of the present invention;

[0043] Figure 10 This is a structural diagram of the conductive contact bridge in a specific embodiment of the present invention;

[0044] Figure 11 This is a structural diagram of the button in a specific embodiment of the present invention.

[0045] In the diagram: 1. Main spindle; 11. Mounting base plate; 2. Knob; 21. Upper boss; 211. Mounting port; 22. Inner cavity; 3. Button; 31. Pressing block; 32. Shaft; 4. PCB board; 41. Functional gear area; 5. Conductive contact bridge; 6. Gear block; 61. Gear rail; 611. Gear groove; 12. Gear protrusion; 44. Notch; 7. Spring.

[0046] Connecting piece 51, first contact piece 52, conductive contact end 521, second contact piece 53, first snap-fit ​​part 23, positioning groove 231, fixing piece 54, conductive contact area 42.

[0047] Clamping foot 33, positioning foot 34, second locking part 25, first movable groove 251, locking block 65, second movable groove 252, upper spring mounting groove 212, lower spring mounting groove 66, support foot 67.

[0048] Groove ring 13, mating block 26, movable protrusion 261. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] like Figure 1-11 As shown, an adjustable rotary switch includes:

[0051] The spindle 1 is hollow inside and has a mounting base plate 11 on it. The lower part of the spindle 1 can be assembled onto the housing.

[0052] Knob 2 is sleeved on the outside of the main shaft 1, and its inner ring has an upper boss 21 that rotates with the upper part of the main shaft 1. The upper boss 21 has a mounting port 211 in the middle position for the upper end of the main shaft 1 to pass through. Knob 2 has an inner cavity 22.

[0053] Button 3 includes a pressing block 31 located in the middle of the knob 2 and movable relative to it, and a shaft 32 located in the middle of the pressing block 31. The shaft 32 passes through the main shaft 1 and can be used to trigger the output terminal to realize the PUSH function output.

[0054] PCB board 4 is sleeved outside the main shaft 1 and positioned on the upper end of the mounting base plate 11. The upper surface of the PCB board 4 has a ring-shaped functional gear area 41.

[0055] The conductive contact bridge 5 is located in the inner cavity 22 of the knob 2 and is snapped together with the knob 2. The conductive contact bridge 5 is in contact with the function position area 41 on the PCB board below.

[0056] A gear shift block 6 is sleeved outside the main shaft 1. The gear shift block 6 is located in the inner cavity 22 of the knob 2 and forms an up-and-down sliding engagement with the knob 2. The lower end face of the gear shift block 6 has a ring-shaped gear shift track 61 with a serrated shape and several gear shift grooves 611 on the lower end face. Correspondingly, the upper end face of the mounting base plate 11 has a gear shift protrusion 12 that engages with the aforementioned gear shift grooves 61 to provide a gear shift reminder. The gear shift protrusion 12 on the mounting base plate 11 also passes through the PCB board 4 to achieve circumferential positioning of the PCB board 4. The PCB board 4 has a notch 44 that is adapted to the gear shift protrusion 12 and allows it to pass through.

[0057] Spring 7, which is sleeved outside the main shaft 1 and presses against the upper boss 21 and the gear block 6, forces the gear track 61 at the lower end of the gear block 6 to abut against the gear protrusion 12.

[0058] When the knob 2 is rotated under force, it can drive the gear block 6 and the conductive contact bridge 5 to rotate together. The end of the conductive contact bridge 5 moves circumferentially on the aforementioned functional gear area 41 to achieve the corresponding gear function switching. At this time, the gear protrusion 12 is engaged in the corresponding gear groove 611 on the gear block 6.

[0059] Preferably, the conductive contact bridge 5 has a connecting piece 51 and a first contact piece 52 extending from the connecting piece 51 to the function position area 41. The first contact piece 52 is arc-shaped and arranged around the outer periphery of the position block 6. The connecting piece 51 is snap-fitted to one side of the knob 2.

[0060] Preferably, the first contact piece 52 is inclined downward from the connecting piece 51 toward the PCB board 4, the conductive contact end 521 on the first contact piece is bent, and the surface of the conductive contact end 521 that abuts against the function position area 41 is an arc surface.

[0061] Preferably, the inner ring side of the knob 2 has a first snap-fit ​​part 23, the bottom of the first snap-fit ​​part 23 has a positioning groove 231, the connecting piece 51 is inserted into the positioning groove 231 and snap-fitted to the knob 2; the bottom of the connecting piece 51 is bent to have a fixing piece 54, and the fixing piece 54 is also connected to the bottom of the first snap-fit ​​part 23 by screws.

[0062] Preferably, the upper surface of the PCB board 4 and the side opposite to the functional position area 41 also have a circularly arranged conductive contact area 42. The conductive contact bridge 5 further includes a second contact piece 53 extending from the connecting piece 51 to the conductive contact area 42. The second contact piece 53 is arc-shaped and arranged around the outer periphery of the position block 6. The second contact piece 53 and the first contact piece 52 are integrally connected to both sides of the connecting piece 51. Of course, the second contact piece is inclined downward from the connecting piece to the PCB board side. The conductive contact end on the second contact piece is bent, and the surface of the conductive contact end that abuts against the conductive contact area is an arc surface.

[0063] Preferably, the lower end of the gear block 6 has at least two gear rails 61, and the gear protrusions 12 on the mounting base plate 11 are also provided with at least two correspondingly, and the two gear rails 61 are arranged symmetrically.

[0064] Preferably, the bottom of the button 3 is provided with a retaining foot 33 and a positioning foot 34. The bottom surface of the upper boss 21 has a second engaging part 25. The second engaging part 25 has a first movable groove 251 into which the retaining foot 33 can be inserted. After the retaining foot 33 enters the first movable groove 251, it can be snapped outward onto the bottom surface of the upper boss 21. The retaining foot 33 can slide in the first movable groove 251. The positioning foot 34 and the button 3 are vertically guided and slidably engaged.

[0065] The gear block 6 has a locking block 65 on its outer periphery. The second locking part 25 also has a second movable groove 252 on the side corresponding to the gear block 6, into which the locking block 65 can be inserted. After the locking block 65 enters the second movable groove 252, it can be locked onto the inner bottom wall of the second movable groove 252 by the action of the spring 7. The locking block 65 can slide in the second movable groove 252.

[0066] Preferably, the upper boss 21 has a spring upper mounting groove 212 at the middle of its base, and the gear block 6 has a spring lower mounting groove 66. The upper and lower ends of the spring 7 abut against the upper mounting groove 212 and the lower mounting groove 66, respectively. The gear block 6 has a support foot 67 at its upper end and around the lower mounting groove 66. When the gear block 6 is mounted on the knob 2, the support foot 67 is also inserted between two adjacent second locking parts.

[0067] Preferably, the outer periphery of the upper end of the main shaft 1 has a groove ring 13, and a plurality of mating blocks 26 are arranged at intervals around the outer periphery of the upper boss 21 and the mounting port 211. The mating blocks 26 are fixed or integrally formed with the upper boss 21. The inner side of the mating block 26 has a movable protrusion 261 that can cooperate with the groove ring 13. The movable protrusion 261 is arc-shaped and can rotate in the groove ring 13.

[0068] By setting the main shaft 1, the knob 2 is mounted on the main shaft 1. The gear block 6 is connected to the knob 2 to achieve synchronous rotation. The conductive contact bridge 5 is snapped onto the gear block 6 for assembly and positioning. The knob 2 moves with the operation to achieve functional output.

[0069] Spring 7 is sleeved outside the main shaft 1 and presses against the upper boss 21 and the gear block 6. When the knob 2 is operated, the gear protrusion 12 will hit the corresponding gear groove 611 after the gear is adjusted to the correct position to remind that the adjustment is in place and realize the gear feel function.

[0070] The aforementioned knob 2, gear block 6, conductive contact bridge 5, and spring 7 can be assembled into a knob assembly that can rotate together;

[0071] The PCB board 4 is mounted on the mounting base plate 11. The stop protrusion 12 on the mounting base plate 11 passes through the PCB board 4 to achieve circumferential positioning of the PCB board 4 and prevent it from rotating with the knob 2. The PCB board 4 and the main shaft 1 can be assembled into a switch fixing assembly.

[0072] Button 3 is assembled with knob 2, and its shaft 32 is also inserted inside the main shaft 1. It can be pressed to realize the PUSH function output. Button 3, knob assembly and switch fixing assembly are assembled into a rotary switch assembly. Button 3 and knob 2 trigger the switch position by pressing or rotating.

[0073] The design incorporates a knob 2, a shift block 6, a spring 7, and a main shaft 1, all coaxially. The spring 7 rests abutting the top of the shift block 6, ensuring the shift block 6 is subjected to force around its circumference, preventing it from shifting during movement, making operation easier and controllable, and improving product reliability. Simultaneously, it reduces the internal space required for the knob 2, addressing the space constraints of combination switches. The overall structure is simpler than existing designs, with fewer parts and a more compact design, reducing product development costs. All parts are interlocked, ensuring robustness and reliability.

Claims

1. A rotary switch with adjustable positions, characterized in that, include: The spindle is hollow inside and has a mounting base plate on it; A knob is sleeved on the outside of the main shaft, and its inner ring has an upper boss that rotates with the upper part of the main shaft. The upper boss has a mounting port in the middle that allows the upper end of the main shaft to pass through. The knob has an inner cavity. The button includes a pressing block located in the center of the knob and movable relative to it, and a shaft located in the center of the pressing block, the shaft passing through a main shaft. A PCB board is sleeved outside the spindle and positioned on the upper end of the mounting base plate. The upper surface of the PCB board has a ring-shaped functional gear area. A conductive contact bridge is located inside the knob and is snapped together with the knob. The conductive contact bridge abuts against the function switch area on the PCB board below. A gear shift block, sleeved outside the main shaft, is located within the inner cavity of the knob and slides against it. The lower end face of the gear shift block has a ring-shaped gear shift track with several gear shift slots. Correspondingly, the upper end face of the mounting base plate has a protruding gear shift protrusion that engages with the aforementioned gear shift slots to provide a gear shift reminder. The gear shift protrusion on the mounting base plate also passes through the PCB board, achieving circumferential positioning of the PCB board. A spring, sleeved outside the main shaft and pressing against the upper boss and the gear shift block, forces the gear shift track at the lower end of the gear shift block to abut against the gear shift protrusion. When the knob is rotated under force, it can drive the gear block and the conductive contact bridge to rotate together. The circumferential movement of the end of the conductive contact bridge in the aforementioned functional gear area realizes the corresponding gear function switching. At this time, the gear protrusion is engaged in the corresponding gear slot on the gear block. The button has a locking foot at the bottom, and the bottom surface of the upper boss has a second locking part. The second locking part has a first movable groove into which the locking foot can be inserted. After the locking foot enters the first movable groove, it can be snapped outward onto the bottom surface of the upper boss. The locking foot can slide in the first movable groove. The gear block has a locking block on its outer periphery. The second locking part also has a second movable groove on one side of the corresponding gear block for the locking block to be inserted. After the locking block enters the second movable groove, it can be locked onto the inner bottom wall of the second movable groove by the action of a spring. The locking block can slide in the second movable groove. The upper boss has an upper spring mounting groove on its bottom and around the mounting opening, and the gear block has a lower spring mounting groove. The upper and lower ends of the spring abut against the upper and lower mounting grooves, respectively. The gear block has a support foot on its upper end and around the lower mounting groove. When the gear block is mounted on the knob, the support foot is also inserted between two adjacent second locking parts. The outer periphery of the upper end of the main shaft has a groove ring, and several mating blocks are arranged at intervals around the outer periphery of the upper boss and the mounting port. The inner side of the mating block has a movable protrusion that can mate with the groove ring, and the movable protrusion can rotate in the groove ring.

2. The adjustable rotary switch according to claim 1, characterized in that, The conductive contact bridge has a connecting piece and a first contact piece extending from the connecting piece to the function position area. The first contact piece is arc-shaped and arranged around the outer periphery of the position block. The connecting piece is snap-fitted to one side of the knob.

3. The adjustable rotary switch according to claim 2, characterized in that, The first contact piece is inclined downwards from the connecting piece toward the PCB board side. The conductive contact end on the first contact piece is bent, and the surface of the conductive contact end that abuts against the function position area is an arc surface.

4. The adjustable rotary switch according to claim 2, characterized in that, The knob has a first snap-fit ​​part on one side of its inner ring. A positioning groove is formed at the bottom of the first snap-fit ​​part. The connecting piece is inserted into the positioning groove and snap-fitted to the knob. A fixing piece is bent at the bottom of the connecting piece. The fixing piece is also connected to the bottom of the first snap-fit ​​part by a screw.

5. The adjustable rotary switch according to claim 2, 3, or 4, characterized in that, The upper surface of the PCB board and on the opposite side of the function position area also have a ring-shaped conductive contact area. The conductive contact bridge also includes a second contact piece extending from the connecting piece to the conductive contact area. The second contact piece is arc-shaped and arranged around the outer periphery of the position block. The second contact piece and the first contact piece are integrally connected to both sides of the connecting piece.

6. The adjustable rotary switch according to claim 1, 2, 3, or 4, characterized in that, The lower end of the gear block has at least two gear rails as described above, and at least two gear protrusions are also provided on the mounting base plate accordingly.

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