CN217983174U - Knob switch with adjustable gears - Google Patents

Abstract

The utility model discloses a knob switch of adjustable gear, include: the main shaft is also provided with a mounting bottom plate; the knob is sleeved outside the main shaft, and an inner ring of the knob is provided with an upper boss; the button comprises a pressing block and a shaft rod, wherein the pressing block can movably extend relative to the button, the shaft rod penetrates through the main shaft, and the upper end surface of the PCB is provided with a function gear area; the conductive contact bridge is positioned in the knob and is in buckle connection with the knob, and the conductive contact bridge is abutted against the functional gear area; the gear block is sleeved outside the main shaft, is positioned in the knob and is in sliding fit with the knob, the lower end face of the gear block is provided with a gear track, the gear track is provided with a plurality of gear grooves, and the upper end face of the mounting base plate is convexly provided with a gear bump matched with the gear grooves to realize gear switching reminding; the gear lug on the mounting base plate also penetrates through the PCB to realize circumferential positioning of the PCB, and the spring is sleeved outside the main shaft and is propped between the upper boss and the gear block. Compact structure, small volume and stable operation.

Description

Knob switch with adjustable gears

Technical Field

The utility model relates to an automobile parts, like the on-off control technical field of car light, on-vehicle air conditioner, specifically be a knob switch of adjustable gear.

Background

At present, the rotatable and pressable switch has a plurality of parts and is complex to assemble.

CN210006655U discloses a gear-adjustable rotary switch, which comprises a panel, a rotating component arranged on the panel and capable of rotating relative to the panel, and a pressing component arranged on the rotating component and capable of elastically stretching relative to the rotating component, wherein the rotating component comprises a knob seat detachably connected to the panel, and a rotating block rotatably arranged between the knob seat and the panel, the pressing component comprises a pressing block arranged in the middle of the rotating block and capable of movably stretching relative to the rotating block, an ejector rod arranged on the pressing block and used for ejecting a key switch, and a resetting piece sleeved on the ejector rod and ejecting between the pressing block and the rotating block; the bottom surface of the rotating block is provided with a groove along the circumferential direction of the rotating block, and the panel is provided with a marble for elastically jacking the groove; a lantern ring is sleeved in the rotating block and provided with a first guide column for the ejector rod to pass through, and the resetting piece is pressed between the first guide column and the pressing block; the pressing block is provided with a guide rod, and the panel is provided with a second guide post for the guide rod to movably stretch; the bottom of the rotating block is provided with a rotating clamping strip along the edge of the rotating block, the knob seat is provided with a rotating platform for the rotating clamping strip to rotate, and the rotating platform is provided with a first annular bulge which is abutted against the rotating clamping strip; a bayonet is arranged on the panel, a buckle connected with the bayonet buckle is arranged at the bottom of the knob seat, and a second annular bulge abutted against the bottom of the rotating block is arranged on the panel; the bottom of the marble is provided with a top pressing block, a top pressing spring is arranged between the top pressing block and the marble, and the panel is provided with a through hole for the marble to elastically stretch and contract to press the groove.

The switch has a plurality of integral parts and is complex to assemble. The following disadvantages are specified:

1. the rotating assembly is arranged on the panel, and then the panel is arranged on the shell, so that a large installation position is needed, and the machining precision is high; the knob block is connected with the panel through the lantern ring and the rotary seat, the knob block is abutted with the first annular bulge through the rotary clamping strip, the bottom of the rotary block is abutted with the second annular bulge to limit the position of the rotary block, the relative matching position of each part is limited, a plurality of parts and components are arranged, the occupied space is large, the assembly of the parts is complex, and the stability is low;

2. the bottom surface of the rotating block is circumferentially provided with the groove, the panel is provided with the marble for elastically jacking the groove, the spring deviates from the central position of the rotating block, the resetting force of the spring acts on the periphery of the rotating block, the rotating block can be obliquely jacked up, the deviation occurs, and the structure is unstable;

3. because the knob switch is through the cooperation of contact and a plurality of function gears on the PCB board, realize shifting, one of touch panel and PCB board is fixed on panel or shell, and another plate body then directly or indirectly is fixed with the knob piece, and installation space is little, and the assembly structure of touch panel and PCB board is complicated, and required cooperation precision is high.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art's is not enough, provides a compact structure, small and move stable knob switch of adjustable gear.

In order to achieve the above purpose, the utility model provides a following technical scheme: a knob switch with adjustable gears comprises:

the main shaft is hollow inside and is provided with a mounting bottom plate;

the knob is sleeved outside the main shaft, an inner ring of the knob is provided with an upper boss which is in running fit with the upper part of the main shaft, the middle part of the upper boss is provided with an installation through hole through which the upper end of the main shaft can pass, and an inner cavity is arranged in the knob;

the button comprises a pressing block which is arranged in the middle of the knob and can movably extend and retract relative to the knob, and a shaft rod which is arranged in the middle of the pressing block, the shaft rod is arranged in the main shaft in a penetrating way,

the PCB is sleeved outside the main shaft and positioned at the upper end of the mounting bottom plate, and the upper end surface of the PCB is provided with a function gear area which is annularly arranged;

the conductive contact bridge is positioned in the inner cavity of the knob and is connected with the knob in a buckling way, and the conductive contact bridge is in interference fit with a functional gear area on the PCB below the conductive contact bridge;

the gear block is sleeved outside the spindle, is positioned in an inner cavity of the knob and is in sliding fit with the knob, the lower end face of the gear block is provided with a gear track which is annularly arranged, the gear track is provided with a plurality of gear grooves, and correspondingly, a gear bump which is matched with the gear grooves to realize gear switching reminding is protruded on the upper end face of the mounting base plate; the gear bumps on the mounting bottom plate also penetrate through the PCB to realize circumferential positioning of the PCB,

a spring which is sleeved outside the main shaft and is pressed between the upper lug boss and the gear block, the spring forces the gear track at the lower end of the gear block to be abutted against the gear lug,

under the state that the knob is stressed to rotate, the knob can drive the gear block to rotate together with the conductive contact bridge, the end part of the conductive contact bridge circumferentially moves on the functional gear area to realize corresponding gear function switching, and the gear lug at the moment is clamped into a corresponding gear groove on the gear block.

Compared with the prior art, the utility model discloses rotary switch's advantage lies in:

the knob is rotatably arranged on the main shaft through the arrangement of the main shaft, the gear block is connected with the knob to realize synchronous rotation, the conductive contact bridge is connected to the gear block in a buckling mode, assembly and positioning are achieved, welding is not needed, the structure is compact, assembly is simple and convenient, the service life is long, function output is achieved along with operation movement of the knob, the conductive contact bridge is in contact conduction fit with the function gear area on the PCB, the fault rate is low, and operation is stable;

the spring is sleeved outside the main shaft and is pressed between the upper boss and the gear block, the operation knob moves, and the gear lug bumps onto the corresponding gear grooves after the gears are adjusted in place to remind the users of adjusting in place, so that the gear hand feeling function can be realized;

the knob, the gear block, the conductive contact bridge and the spring can be assembled into a knob assembly and can rotate together;

the PCB is arranged on the mounting base plate, the PCB penetrates through the gear bumps on the mounting base plate to be circumferentially positioned, the PCB is prevented from rotating along with the knob, and the PCB and the main shaft can be assembled into a switch fixing assembly;

the button is assembled with the knob, the shaft lever of the button is further arranged in the spindle in a penetrating mode, the PUSH function output can be achieved through pressing, and the button, the knob assembly and the switch fixing assembly are assembled into the knob switch assembly. The button and the knob trigger a switch gear by pressing or rotating.

The design that the knob, the gear block, the spring and the main shaft are coaxial is adopted, and the spring is propped against the upper part of the gear block, so that the periphery of the gear block is stressed, the gear block is not easy to deviate during movement, the operation hand feeling is easier to control, and the product reliability is more stable; meanwhile, the utilization of the inner space of the knob is reduced, and the requirement of a small space structure of the combination switch is met. Overall structure is more succinct than current design, and the part is few, compact structure, has reduced product development cost, and each part fastens each other, and is firm reliable.

Preferably, electrically conductive contact bridge have the connection piece, by the first contact of connection piece extension to function gear district department, first contact arc is around the gear piece periphery setting, the connection piece is connected with knob one side buckle. First contact arc parallel winding gear piece periphery sets up, and the inside occupation space of knob is little.

Preferably, the contact piece inclines downwards from the connecting sheet to one side of the PCB, the conductive contact end on the contact piece is bent, and the surface of the conductive contact end, which is abutted to the functional gear area, is an arc surface. The contact piece inclines to facilitate the contact and conduction of the PCB, and the conductive contact end on the contact piece is bent, so that the contact area with the function gear area is large, and the movement is smooth.

Preferably, a first clamping portion is arranged on one side of the inner ring of the knob, a positioning groove is formed in the bottom of the first clamping portion, and the connecting piece is inserted into the positioning groove and is connected with the knob in a clamping mode; the bottom of the connecting sheet is bent to form a fixing sheet, and the fixing sheet is connected with the bottom of the clamping portion through screws. Through connection piece, stationary blade and first joint portion connection, many places are connected, connect stably, and the connection piece inserts difficult rupture in the constant head tank.

Preferably, the upper end surface of the PCB further has a conductive contact area arranged in a ring shape at the opposite side of the functional shift 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 periphery of the shift block, and the second contact piece and the first contact piece are integrally connected to two sides of the connecting piece. Two places conductive structure is stable, and structural design is reasonable, and the inside occupation space of knob is little.

Preferably, the lower end of the gear block is provided with at least two gear tracks, and at least two gear bumps on the mounting bottom plate are correspondingly arranged. The rail structure with multiple gears avoids the gear blocks from shifting to one side when acting.

Preferably, the bottom of the button is provided with a clamping pin, the bottom surface of the upper boss is provided with a second clamping part, the second clamping part is provided with a first movable groove into which the clamping pin can be inserted, the clamping pin enters the first movable groove and can be buckled outwards on the bottom surface of the upper boss, and the clamping pin can slide in the first movable groove;

the gear block is arranged on the periphery of the gear block, the second clamping portion is further provided with a second movable groove for the clamping block to insert into on one side of the corresponding gear block, the clamping block can be buckled on the inner bottom wall of the second movable groove under the action of a spring after entering the second movable groove, and the clamping block can slide in the second movable groove. The button adopts buckle structure and knob matching design, and the gear piece adopts buckle structure and knob matching design, convenient operation, and including can slide from top to bottom, be difficult for deviating from.

Preferably, the upper boss bottom and the periphery of the mounting port are provided with upper spring mounting grooves, the gear block is provided with lower spring mounting grooves, and the upper end and the lower end of the spring are respectively abutted to the upper mounting groove and the lower mounting groove; the gear piece upper end just is located the periphery of mounting groove down and has the stabilizer blade, and when the knob was located in the gear piece dress, the stabilizer blade still inserted and locates between two adjacent joint portions. The spring supports in upper and lower mounting groove internal fixation, and the gear piece still inserts through the stabilizer blade and locates between two adjacent joint portions, realizes that circumference is spacing.

Preferably, the periphery of the upper end of the main shaft is provided with a groove ring, the upper end of the upper boss is provided with a plurality of matching blocks at intervals around the periphery of the mounting through hole, the inner sides of the matching blocks are provided with movable protrusions capable of being matched with the groove ring, and the movable protrusions can rotate in the groove ring. The matching blocks are arranged at intervals, so that the spindle is convenient to mount, and the movable protrusions rotate in the groove rings, so that the contact area is small, and the movement is convenient.

Drawings

FIG. 1 is a schematic view of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an embodiment of the present invention;

FIG. 3 is an exploded view of an embodiment of the present invention;

FIG. 4 is a drawing showing the combination of the gear block and the main shaft according to the embodiment of the present invention;

FIG. 5 is a view showing the internal structure of the rotary knob according to the embodiment of the present invention;

FIG. 6 is a diagram of a knob according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of the spindle according to an embodiment of the present invention;

fig. 8 is a structural diagram of a gear block in an embodiment of the present invention;

fig. 9 is a diagram illustrating a structure of a PCB board according to an embodiment of the present invention;

fig. 10 is a block diagram of a conductive contact bridge in an embodiment of the invention;

fig. 11 is a structural diagram of a button according to an embodiment of the present invention.

In the figure: the structure comprises a main shaft 1, a mounting bottom plate 11, a knob 2, an upper boss 21, a mounting through hole 211, an inner cavity 22, a button 3, a pressing block 31, a shaft lever 32, a PCB 4, a function gear area 41, a conductive contact bridge 5, a gear block 6, a gear track 61, a gear groove 611, a gear lug 12, a notch 44 and a spring 7,

a connecting piece 51, a first contact piece 52, a conductive contact end 521, a second contact piece 53, a first clamping portion 23, a positioning groove 231, a fixing piece 54, a conductive contact area 42,

a clamping foot 33, a positioning foot 34, a second clamping part 25, a first movable groove 251, a clamping block 65, a second movable groove 252, an upper spring mounting groove 212, a lower spring mounting groove 66, a supporting foot 67,

the groove ring 13, the matching block 26 and the movable protrusion 261.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 11, a knob switch with adjustable shift position includes:

the main shaft 1 is hollow, and is also provided with a mounting bottom plate 11, and the lower part of the main shaft 1 can be assembled on a shell;

the knob 2 is sleeved outside the main shaft 1, an upper boss 21 which is in rotating fit with the upper part of the main shaft 1 is arranged on the inner ring of the knob 2, a mounting through hole 211 through which the upper end of the main shaft 1 can penetrate is formed in the middle of the upper boss 21, and an inner cavity 22 is formed in the knob 2;

the button 3 comprises a pressing block 31 which is arranged in the middle of the knob 2 and can movably extend relative to the knob, and a shaft lever 32 which is arranged in the middle of the pressing block 31, the shaft lever 32 penetrates through the spindle 1, and the shaft lever 32 can be used for triggering an output end to realize PUSH function output;

the PCB 4 is sleeved outside the spindle 1 and positioned at the upper end of the mounting bottom plate 11, and the upper end surface of the PCB 4 is provided with a function gear area 41 in an annular arrangement;

the conductive contact bridge 5 is positioned in the inner cavity 22 of the knob 2 and is in snap connection with the knob 2, and the conductive contact bridge 5 is in interference fit with the functional gear area 41 on the PCB 4 below;

the gear block 6 is sleeved outside the spindle 1, the gear block 6 is located in an inner cavity 22 of the knob 2 and forms up-and-down sliding fit with the knob 2, a gear rail 61 is annularly arranged on the lower end face of the gear block 6, the gear rail 61 is in a sawtooth shape, a plurality of gear grooves 611 are formed in the lower end face of the gear block, and correspondingly, gear bumps 12 matched with the gear grooves 61 to achieve gear switching reminding are protruded on the upper end face of the mounting base plate 11; the gear lugs 12 on the mounting base plate 11 also penetrate through the PCB 4 to realize the circumferential positioning of the PCB 4, the PCB 4 is provided with notches 44 which are matched with the gear lugs 12 and are used for the penetration of the gear lugs,

a spring 7 sleeved outside the main shaft 1 and pressed between the upper boss 21 and the gear block 6, wherein the spring 7 forces the gear rail 61 at the lower end of the gear block 6 to be abutted against the gear bump 12,

under the state that the knob 2 is stressed to rotate, the gear block 6 and the conductive contact bridge 5 can be driven to rotate together, the end part of the conductive contact bridge 5 circumferentially moves on the functional gear area 41 to realize corresponding gear function switching, and the gear bump 12 is clamped into the corresponding gear groove 611 on the gear block 6.

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 functional gear area 41, the first contact piece 52 is arc-shaped and is arranged around the periphery of the gear block 6, and the connecting piece 51 is connected with one side of the knob 2 in a buckling manner.

Preferably, the first contact piece 52 is inclined downwards from the connecting piece 51 to one side of the PCB 4, the conductive contact end 521 on the first contact piece is bent, and the surface of the conductive contact end 521, which is in contact with the functional gear area 41, is an arc surface.

Preferably, a first clamping portion 23 is arranged on one side of the inner ring of the knob 2, a positioning groove 231 is formed in the bottom of the first clamping portion 23, and the connecting piece 51 is inserted into the positioning groove 231 and is in clamping connection with the knob 2; the bottom of the connecting sheet 51 is bent to form a fixing sheet 54, and the fixing sheet 54 is connected with the bottom of the clamping portion 23 through a screw.

Preferably, the upper end surface of the PCB 4 further has a conductive contact area 42 annularly arranged on the opposite side of the functional gear area 41, the conductive contact bridge 5 further includes a second contact piece 53 extending from the connection piece 51 to the conductive contact area 42, the second contact piece 53 is arc-shaped and disposed around the periphery of the gear block 6, the second contact piece 53 and the first contact piece 52 are integrally connected to two sides of the connection piece 51, the second contact piece is inclined downward from the connection piece to one side of the PCB, the conductive contact end on the second contact piece is bent, and the surface of the conductive contact end abutting against the conductive contact area is an arc surface.

Preferably, the lower end of the shift block 6 has at least two shift position rails 61, at least two shift position protrusions 12 on the mounting base plate 11 are correspondingly disposed, and the two shift position rails 61 are symmetrically disposed.

Preferably, the bottom of the button 3 is provided with a clamping leg 33 and a positioning leg 34, the bottom surface of the upper boss 21 is provided with a second clamping portion 25, the second clamping portion 25 is provided with a first movable groove 251 into which the clamping leg 23 can be inserted, the clamping leg 23 enters the first movable groove 251 and can be buckled outwards on the bottom surface of the upper boss 21, and the clamping leg 23 can slide in the first movable groove 251; the positioning foot 34 is in vertical guide sliding fit with the button 3;

the outer periphery of the gear block 6 is provided with a fixture block 65, the second clamping portion 25 is further provided with a second movable groove 252 into which the fixture block 65 can be inserted on one side corresponding to the gear block 6, the fixture block 65 enters the second movable groove 252 and can be buckled on the inner bottom wall of the second movable groove 252 under the action of the spring 7, and the fixture block 65 can slide in the second movable groove 252.

Preferably, the middle position of the bottom of the upper boss 21 is provided with an upper spring mounting groove 212, the stop block 6 is provided with a lower spring mounting groove 66, and the upper end and the lower end of the spring 7 respectively support against the upper mounting groove 212 and the lower mounting groove 66; the periphery that gear piece 6 upper end just was located lower mounting groove 66 has stabilizer blade 67, when gear piece 6 was installed on knob 2, stabilizer blade 67 still inserted and is located between two adjacent joint portions.

Preferably, the periphery of the upper end of the main shaft 1 is provided with a groove ring 13, a plurality of matching blocks 26 are arranged at the upper end of the upper boss 21 and around the periphery of the installation through hole 211 at intervals, the matching blocks 26 are fixed or integrally arranged with the upper boss 21, a movable protrusion 261 capable of being matched with the groove ring 13 is arranged on the inner side of the matching blocks 26, the movable protrusion 261 is arranged in an arc shape, and the movable protrusion 261 can rotate in the groove ring 13.

The knob 2 is rotatably arranged on the main shaft 1 through the arrangement of the main shaft 1, the gear block 6 is connected with the knob 2 to realize synchronous rotation, the conductive contact bridge 5 is connected to the gear block 6 in a buckling mode, and functional output is realized along with the operation movement of the knob 2;

the spring 7 is sleeved outside the main shaft 1 and is pressed between the upper boss 21 and the gear block 6, the operation knob 2 moves, and the gear lug 12 impacts the corresponding gear groove 611 after the gear is adjusted in place to remind that the gear is adjusted in place, so that a gear hand feeling function is realized;

the knob 2, the gear block 6, the conductive contact bridge 5 and the spring 7 can be assembled into a knob assembly and can rotate together;

the PCB 4 is arranged on the installation bottom plate 11, the PCB 4 is circumferentially positioned by the gear bumps 12 on the installation bottom plate 11 penetrating through the PCB 4, the rotation of the PCB 4 along with the knob 2 is avoided, and the PCB 4 and the main shaft 1 can be assembled into a switch fixing assembly;

the button 3 is assembled with the knob 2, the shaft lever 32 of the button is further arranged in the spindle 1 in a penetrating mode, the PUSH function output can be achieved through pressing, and the button 3, the knob assembly and the switch fixing assembly are assembled into a knob switch assembly. The push button 3 and the knob 2 trigger the switch position by pressing or rotating.

The design that the knob 2, the gear block 6 and the spring 7 are coaxial with the main shaft 1 is adopted, and the spring 7 is abutted against the upper part of the gear block 6, so that the gear block 6 is stressed circumferentially, is not easy to deviate during movement, is easier to control the operation hand feeling, and is more stable in product reliability; meanwhile, the utilization of the internal space of the knob 2 is reduced, and the requirement of a small space structure of the combination switch is met. Overall structure is more succinct than current design, and the part is few, compact structure, has reduced product development cost, and each part fastens each other, and is firm reliable.

Claims (9)

1. A knob switch with adjustable gears is characterized by comprising:

the main shaft is hollow inside and is also provided with a mounting bottom plate;

the knob is sleeved outside the main shaft, an inner ring of the knob is provided with an upper boss which is in running fit with the upper part of the main shaft, the middle part of the upper boss is provided with an installation through hole through which the upper end of the main shaft can pass, and an inner cavity is arranged in the knob;

a button which comprises a pressing block which is arranged in the middle of the knob and can movably extend relative to the knob, and a shaft rod which is arranged in the middle of the pressing block, the shaft rod is arranged in the main shaft in a penetrating way,

the PCB is sleeved outside the main shaft and positioned at the upper end of the mounting bottom plate, and the upper end surface of the PCB is provided with a function gear area which is annularly arranged;

the conductive contact bridge is positioned in the inner cavity of the knob and is connected with the knob in a buckling way, and the conductive contact bridge is in interference fit with a functional gear area on the PCB below the conductive contact bridge;

the gear block is sleeved outside the spindle, is positioned in an inner cavity of the knob and is in sliding fit with the knob, the lower end surface of the gear block is provided with a gear track which is annularly arranged, the gear track is provided with a plurality of gear grooves, and correspondingly, a gear bump which is matched with the gear grooves to realize gear switching reminding is protruded on the upper end surface of the mounting bottom plate; the gear bumps on the mounting bottom plate also penetrate through the PCB to realize circumferential positioning of the PCB,

a spring which is sleeved outside the main shaft and is pressed between the upper lug boss and the gear block, the spring forces the gear track at the lower end of the gear block to be abutted against the gear lug,

under the state that the knob is stressed to rotate, the knob can drive the gear block to rotate together with the conductive contact bridge, the end part of the conductive contact bridge circumferentially moves on the functional gear area to realize corresponding gear function switching, and the gear lug at the moment is clamped into a corresponding gear groove on the gear block.

2. The rotary switch with the adjustable gear according to claim 1, wherein the conductive contact bridge has a connecting plate, a first contact plate extending from the connecting plate to the functional gear region, the first contact plate is arc-shaped and arranged around the periphery of the gear block, and the connecting plate is connected with one side of the knob in a buckling manner.

3. The rotary switch with adjustable gear according to claim 2, wherein the contact plate is inclined downward from the connecting plate to one side of the PCB, the conductive contact end of the contact plate is curved, and the surface of the conductive contact end abutting against the functional gear area is a cambered surface.

4. The knob switch with the adjustable gear according to claim 2, wherein a first clamping portion is arranged on one side of the inner ring of the knob, a positioning groove is formed in the bottom of the first clamping portion, and the connecting piece is inserted into the positioning groove and connected with the knob in a buckling manner; the bottom of the connecting sheet is bent to form a fixing sheet, and the fixing sheet is connected with the bottom of the clamping portion through a screw.

5. The rotary switch with adjustable gear according to claim 2, 3 or 4, characterized in that the PCB board further has a conductive contact area arranged in a ring shape on the upper end face and on the opposite side of the functional gear area, the conductive contact bridge further comprises 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 periphery of the gear block, and the second contact piece is integrally connected with the first contact piece on both sides of the connecting piece.

6. The knob switch of adjustable gear of claim 1 or 2 or 3 or 4, wherein the lower end of the gear block has at least two said gear tracks, and there are at least two corresponding gear projections on the mounting base plate.

7. The knob switch with the adjustable gear according to claim 1, 2, 3 or 4, wherein the bottom of the button is provided with a clamping pin, the bottom surface of the upper boss is provided with a second clamping portion, the second clamping portion is provided with a first movable groove into which the clamping pin can be inserted, the clamping pin enters the first movable groove and can be buckled outwards on the bottom surface of the upper boss, and the clamping pin can slide in the first movable groove;

the periphery of the gear block is provided with a clamping block, one side of the second clamping portion, corresponding to the gear block, is also provided with a second movable groove for the clamping block to insert into, the clamping block can be buckled on the inner bottom wall of the second movable groove after entering the second movable groove under the action of a spring, and the clamping block can slide in the second movable groove.

8. The knob switch of adjustable gear of claim 7, wherein the upper boss bottom and the periphery of the mounting opening have an upper spring mounting groove, the gear block has a lower spring mounting groove, and the upper and lower ends of the spring respectively abut against the upper mounting groove and the lower mounting groove; the gear block upper end just is located the periphery of mounting groove down and has the stabilizer blade, when the knob was located in gear block dress, the stabilizer blade still inserted and locates between two adjacent joint portions.

9. The position-adjustable rotary switch according to claim 1, 2, 3 or 4, wherein the upper end of the main shaft has a groove ring on its outer circumference, the upper end of the upper boss has a plurality of engaging blocks spaced around the outer circumference of the mounting opening, and the engaging blocks have movable protrusions on their inner sides, which are engageable with the groove ring, and the movable protrusions are rotatable in the groove ring.

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