CN210743703U - Knob switch - Google Patents

Abstract

The utility model provides a rotary switch belongs to the switch technology field. It has solved the problem that current knob switch structure is complicated, the installation effectiveness is low. The utility model comprises a shell and a knob which is rotatably arranged on the shell, a circuit board is also arranged in the shell, a potentiometer is arranged on the circuit board, and the potentiometer is directly matched with the knob in a rotating way; still be equipped with the gear circle on the circuit board, the gear circle is equipped with the gear groove that evenly sets up along gear circle circumferencial direction, and the gear groove realizes the cooperation with the knob through the elasticity piece that resets that sets up on the knob. The utility model has the advantages of the gear switching is clear, the installation effectiveness is high.

Description

Knob switch

Technical Field

The utility model belongs to the technical field of the switch, concretely relates to knob switch.

Background

The knob switch is a switch for controlling the on-off of the movable and static contacts by rotating a knob, and has a simple structure and wide application. The existing rotary switch has low installation efficiency and high production cost, and the gear switching of the rotary switch is very fuzzy, so that a user cannot accurately switch gears.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that exists among the prior art, provide a gear switch clear, the knob switch that the installation effectiveness is high.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: a knob switch comprises a shell and a knob rotatably arranged on the shell, and is characterized in that a circuit board is also arranged in the shell, a potentiometer is arranged on the circuit board, and the potentiometer is in rotation stopping fit with the knob; the circuit board on still be equipped with the gear circle, the gear circle be equipped with along the gear groove of gear circle circumferencial direction even setting, the gear groove realize the cooperation with the knob through canceling release mechanical system. When the potentiometer is used, the knob is rotated, the potentiometer is connected with the rotation knob, and the potentiometer serves as a variable potentiometer and is used for adjusting the voltage and the current, so that the resistance value of the potentiometer is changed when the potentiometer is rotated, the voltage and the current on the circuit board are changed, the circuit board outputs different signals according to different voltages and different currents, and function switching is achieved. Compared with the structure of the traditional knob switch, the knob switch saves a plurality of springs and moving and static contact pieces, greatly reduces the number of parts, has the advantages of simple structure and high installation efficiency, and the potentiometer is connected with the knob only by the potentiometer to limit the rotation of the knob, so when the knob rotates, the damping between the potentiometer and the knob is smaller, the knob rotates smoothly, and the reset mechanism is arranged, when the reset mechanism rotates along with the knob, the reset mechanism rotates to the position of the gear groove, because of the reset mechanism, the reset mechanism slides into the gear groove, the reset mechanism impacts the bottom surface of the gear groove to make a sound, when the knob continues to rotate, the reset mechanism slides out of the gear groove, the reset mechanism is compressed, the knob rotates continuously, when the reset mechanism slides into the gear groove, the sound is made, namely, one gear switching is completed, the knob is clear, so that the knob is very rhythmic when rotated, the knob can make a sound of clicking, and when the reset mechanism is abutted against the gear ring and rotates along with the knob, the reset mechanism has pressure on the gear ring, so that the friction force is increased when the knob rotates, the knob cannot easily slide when rotated, and the defect that the damping between the potentiometer and the knob is too small is overcome. The potentiometer and the circuit board are standard components commonly found in the market, and are not described in detail here.

Furthermore, the knob on detachably install the connecting seat, the connecting seat on be equipped with and be used for inserting the pivot on the potentiometre. Connecting seat detachably installs in the side that the knob is close to the potentiometre, also be the bottom surface of knob, detachable mounting means has a plurality ofly, for example threaded connection, the buckle is connected etc., and detachable sets up, the installation is simple, it is fixed firm, and the potentiometre itself just has the slot that is used for inserting the axis of rotation, consequently, only need to install the connecting seat on the knob, then insert the axis of rotation on the connecting seat and can realize the connection of knob and potentiometre in the slot of potentiometre, thereby finally realize coming the function switch to the circuit board through rotatory knob control potentiometre, the installation effectiveness is high, need not to design other complex structures, the design cost is low. Of course, the connecting seat can also be a structure which is fixedly connected on the knob or integrated with the knob.

Furthermore, the reset mechanism comprises a hollow mounting shaft arranged on the connecting seat, a spring and a positioning piece, wherein the spring and the positioning piece are mounted in the mounting shaft; the head of the positioning piece is arc-shaped, and the gear groove is arc-shaped. The knob drives the connecting seat to rotate when rotating, the mounting shaft also rotates, the spring is in a rebound trend state, namely a compressed state, the positioning piece is in a state of abutting against the upper surface of the gear ring, when the mounting shaft rotates to the position of the gear groove, the positioning piece can be inserted into the gear groove due to the resilience force of the spring, meanwhile, the head of the positioning piece is arc-shaped, the process of inserting the positioning piece into the gear groove is smooth, the rotation is smooth, and when the positioning piece is inserted into the gear groove, impact and noise can occur, and the noise can play a role in prompting; when the knob continues to rotate, gear upper surface is lived to the setting element butt again this moment, the spring is compressed, when the setting element rotates next gear groove, the spring resets, the setting element inserts the gear inslot again, when the knob is constantly rotatory, the knob can send the sound of dazzling, moreover, the steam generator is simple in structure, high durability and convenient operation, compare the structure of current a plurality of springs, this setting only needs a spring can realize same function, save the part, the damping sense is littleer when the knob is rotatory, it is more smooth, it is also very convenient to install, and the installation effectiveness is high.

Furthermore, gear circle circumferencial direction evenly be provided with the jack catch, the circuit board on seted up and be used for with jack catch complex jack. When installing the gear circle, insert the jack catch of gear circle in the jack socket on the circuit board, can accomplish the fixed of gear circle and circuit board, simple to operate, the sound construction, the gear circle can make alone moreover, has reduced the structural complexity of part for the processing degree of difficulty of single part is lower.

Furthermore, the circuit board on be equipped with the lamp pearl, the connecting seat on be equipped with the printing opacity passageway that is used for lamp pearl light to pass, the knob on be equipped with the printing opacity region that corresponds the printing opacity passageway. When the knob is rotatory, the printing opacity passageway is rotated when lamp pearl place position, and the light of lamp pearl will be passed through to the printing opacity passageway to realize the suggestion of circuit board function switching, can mark this printing opacity passageway of word cooperation on the casing, can also play the location suggestion effect, and lamp pearl accessible circuit board built-in procedure sends different colours, thereby realizes distinguishing multiple functions, makes the outward appearance of knob better-looking, has more scientific and technological sense, and function switch suggestion is simple and clear simultaneously.

Furthermore, the connecting seat is also provided with a light shield partially covering the lower surface of the connecting seat. The lens hood passes through glue or fixes on the connecting seat bottom surface from the face of gluing in area, do not cover the printing opacity passageway, adopt the lens hood can make whole connecting seat can adopt integrative transparent material to make, need not to adopt two kinds of materials to make or the trompil comes the printing opacity on the connecting seat with the connecting seat, this sets up the part manufacturing cost that can reduce the connecting seat, and the lens hood can also shelter from the connecting seat and be used for fixing the mounting hole on the connecting seat, play the sealed guard action to threaded fastener such as screw in the mounting hole, the speed of rustting of screw slows down.

Furthermore, the knob include upper cover and base, the upper cover on be equipped with the erection column, the base on be equipped with the through-hole that supplies the erection column to pass, the connecting seat on be equipped with and supply the installation pipe that the erection column inserted. The upper cover, the base and the connecting seat are connected through threads, the mounting column is inserted into the mounting tube, the screw is inserted into the through hole of the mounting tube and then inserted into the threaded hole of the mounting column, so that the screw can be locked into the threaded hole, the upper cover and the connecting seat can be fixed, the base can be clamped between the upper cover and the connecting seat, the mounting process and the mounting mode are simple, and the mounting is firm.

Furthermore, the upper cover is provided with a convex ring, the base is provided with a concave ring matched with the convex ring, the inner side of the convex ring is also connected with a plurality of reinforcing ribs, and the reinforcing ribs are mutually connected into a whole. When the upper cover is installed on the base, the convex ring is inserted into the concave ring, the outer side wall of the convex ring of the upper cover and the outer side wall of the concave ring of the base are closed, so that the upper cover and the base have two staggered contact surfaces, the sealing effect between the upper cover and the base can be enhanced, the installation is more convenient, the upper cover is buckled on the base and cannot be easily disengaged when the screw is not adopted for fixation, the reinforcing ribs on the inner side of the concave ring are connected into a whole, and the strength of the base can be effectively increased.

Further, the casing including threaded connection's the last circle of each other and fixed cover down, the last circle be equipped with the mounting hole that is used for installing the knob, lower fixed cover be equipped with the mounting groove that is used for installing the circuit board, the base still include the chimb, set up the fixed jack catch on the chimb, chimb medial surface butt connecting seat, the mounting hole edge still is equipped with a plurality of spacing flanges that can carry out spacingly to fixed jack catch. When the rotary knob is installed, the base is inserted into the installation hole of the upper ring, so that the fixed clamping jaw is clamped into the installation hole, the fixed clamping jaw restores the original shape and limits the base, the base can only rotate in the through hole of the upper ring and cannot fall off from the upper ring, and the fixed clamping jaw protrudes relative to the outer ring of the base due to the arrangement of the limiting flange, so that the fixed clamping jaw can interfere with the limiting flange when rotating to the position of the limiting flange, the whole rotary knob cannot rotate continuously, the arrangement can limit the rotation angle of the rotary knob, the circuit board is installed in the installation groove of the lower fixed cover, after the upper ring and the lower fixed cover are connected through screws, the distance between the circuit board and a connecting seat installed on the rotary knob is very short, and a potentiometer protrudes out of the circuit board, so that the rotary shaft on the connecting seat can be arranged to be short, and the function of saving, the whole structure is compact.

Furthermore, the upper ring comprises a plurality of long columns, and the lower fixing cover is provided with a fixing seat matched with the long columns. All be equipped with the trompil on long post and the fixing base, when installing the circuit board, place the circuit board in the mounting groove of lower fixed cover for hole and fixing base on the circuit board are aimed at, then cover and install the upper ring of knob, make the screw hole on the long post of upper ring correspond two holes, lock the screw at last can, the installation is simple, the circuit board is by the upper ring with lower fixed cover clamp tightly in the middle of, make the circuit board can not become flexible, compact structure easily.

Furthermore, the mounting groove is internally provided with a mounting area matched with the peripheral corners of the circuit board. The installation area is just as much as the four sides of the circuit board in size for the circuit board can be very conveniently put into the mounting groove, and when installing the circle, the circuit board can not become flexible easily, can also make the size of fixed cover down can design littleer, and save material reduces the volume of this knob switch.

Compared with the prior art, the knob switch adopting the technical scheme has the following beneficial effects:

the utility model discloses a rotary switch has following advantage:

1: function through potentiometre control circuit board switches, has played and has saved a plurality of springs and sound contact, the part quantity that has significantly reduced, has simple structure, advantage that the installation effectiveness is high.

2: the knob and the potentiometer are connected, the potentiometer has small damping on the knob, the reset mechanism ensures that the knob cannot be rotated and is not loosened, and the knob has the advantages of smooth rotation and difficulty in loosening.

3: the knob switch only comprises a knob, a circuit board, a shell, a potentiometer and a gear ring, and has the advantages of small number of parts, simple and compact structure, stability, reliability and convenience in disassembly and maintenance.

4: the reset mechanism is matched with the gear ring, so that the knob can make a rhythmic sound when rotating, and gear switching is clear.

Drawings

Fig. 1 is an exploded view of embodiment 1 of the present invention;

FIG. 2 is another angular schematic view of FIG. 1;

fig. 3 is a perspective view of the present invention;

fig. 4 is a cross-sectional view of the internal structure of the present invention;

FIG. 5 is a schematic structural view of the upper ring;

fig. 6 is an exploded view of embodiment 2 of the present invention.

In the figure, 1, a housing; 2. a knob; 3. a circuit board; 4. a potentiometer; 5. a connecting seat; 51. a rotating shaft; 52. installing a shaft; 521. a spring; 522. a positioning member; 6. a gear ring; 61. a claw; 31. a jack; 32. a lamp bead; 54. a light-transmitting channel; 55. a light shield; 21. an upper cover; 22. a base; 211. mounting a column; 222. installing a pipe; 212. a convex ring; 223. a concave ring; 224. reinforcing ribs; 11. winding; 12. a lower fixing cover; 225. a convex edge; 226. fixing the clamping jaw; 111. a step; 112. limiting and blocking edges; 121. mounting grooves; 1211. an installation area; 113. a long column; 122. a fixed seat; 62. a gear groove.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example 1:

as shown in fig. 1-5, the rotary switch includes a housing 1, a knob 2, wherein the housing 1 includes an upper ring 11 and a lower fixing cover 12, the knob 2 includes an upper cover 21 and a base 22, a through hole for inserting the base 22 is provided on the upper ring 11, a flange 225 protruding from the bottom surface of the base 22 is provided on the base 22, a fixing claw 226 is provided on the flange 225, the fixing claw 226 is clamped into the through hole to complete the installation of the base 22 and the upper ring 11, so that the base 22 can rotate in the through hole of the upper ring 11 and cannot fall out, the edge of the through hole of the upper ring 11 is further provided with a circle of steps 111 and two limiting ribs 112, the two limiting ribs 112 are on the same straight line, and when the base 22 rotates, the limiting ribs 112 can block the fixing claw 226 to realize the rotation limitation of the base 22.

Specifically, a circuit board 3 is further installed in the housing 1, a potentiometer 4 is arranged on the circuit board 3, the circuit board 3 and the potentiometer 4 are standard components which are common on the market, and the potentiometer 4 is welded on the circuit board 3, which is not described herein again. Wherein it has the through-hole that is used for installing it between last circle 11 and lower fixed cover 12 to open on the circuit board 3, still is equipped with the jack 31 that is used for installing gear circle 6, and jack 31 is rectangle or trapezoidal, and gear circle 6 bottom is equipped with the jack catch 61 that inserts the through-hole moreover, and the quantity of jack catch 61 and jack 31 is three and evenly sets up and is triangle-shaped because triangle-shaped is more firm.

Specifically, still be equipped with connecting seat 5 on the knob 2, be equipped with the axis of rotation 51 that is used for inserting the slot of seting up on the potentiometre 4 on the connecting seat 5, axis of rotation 51 and connecting seat 5 structure as an organic whole, still be equipped with protruding installation axle 52 in connecting seat 5 and cavity setting on the connecting seat 5, installation axle 52 also is structure as an organic whole with connecting seat 5, be equipped with compression spring 521 and setting element 522 in the installation axle 52, setting element 522 head is circular, setting element 522 inserts in compression spring 521, interference fit between the two, prevent that setting element 522 from falling out easily, spring 521 both ends butt installation axle 52 bottom surface and setting element 522 bottom surface respectively, setting element 522 butt gear circle 6 upper surface, five gear grooves 62 that are used for setting element 522 male are seted up on the gear circle 6, gear groove 61 center is to gear groove 62 marginal smooth transition, the shape of gear groove 62 is bowl form or semicircle form, make. The slot of the potentiometer 4 is standardized, so the size of the rotating shaft 51 is designed according to the standard, and most of the slots of the conventional potentiometer 4 are rectangular, so the position of the rotating shaft 51 inserted into the slot of the potentiometer 4 is rectangular in the embodiment, and a reinforcing ring with a size slightly larger than the head of the rotating shaft 51 is arranged at the tail part of the rotating shaft 51, and the reinforcing ring is used for increasing the strength of the rotating shaft 51.

Specifically, be equipped with lamp pearl 32 on the circuit board 3, be equipped with the printing opacity passageway 54 that is used for lamp pearl 32 light to pass on the connecting seat 5, be equipped with the printing opacity region that corresponds printing opacity passageway 54 on the knob 2, this transparent region is the trompil in this example, lamp pearl 32 is LED lamp pearl 32, the quantity of lamp pearl 32 is two, distribute in the both sides of potentiometre 4, lamp pearl 32 also welds on circuit board 3, and be equipped with the wire socket on circuit board 3 well, also have the opening that is used for the wire to wear out on the casing 1. The beads 32 emit light through the light-transmitting channels 54 to emit light outwards.

Specifically, be equipped with three erection column 211 on the upper cover 21 of knob 2, all set up threaded hole on every erection column 211, still offer the trompil that is used for installing printing opacity passageway 54 on the upper cover 21, printing opacity passageway 54 passes the trompil and exposes the upper surface, be equipped with the three through-hole that corresponds erection column 211 on the base 22, be equipped with the three installation pipe 222 that corresponds in inserting the through-hole on the connecting seat 5, the through-hole has also been seted up on every installation pipe 222, all be equipped with the chamfer on this three through-hole, the erection column 211 inserts in the installation pipe 222, then lock the screw in the through-hole from installation pipe 222, upper cover 21 and base 22 and connecting seat 5 pass through the fix with screw.

Specifically, the coupling seat 5 of the knob 2 is mounted on the mounting hole of the upper ring 11 through the fixing jaw 226.

Preferably, the light-transmitting channel 54 and the connecting seat 5 are an integral structure, and the whole connecting seat 5 is integrally formed by transparent plastics. This setting can reduce part quantity, reduces the parts processing cost, also can reduce the whole installation time of knob 2 switch.

Specifically, the connecting seat 5 is further provided with a light shield 55, the light shield 55 is adhered to the lower surface of the connecting seat 5 and exposes out of the transparent area, and the light shield 55 is a common opaque adhesive tape or plastic sheet in the market, which is not described herein again.

Specifically, a mounting groove 121 for mounting the circuit board 3 is formed in the lower fixing cover 12, a mounting area 1211 matching with corners around the circuit board 3 is arranged in the mounting groove 121, a plurality of long columns 113 are arranged on the upper ring 11, each long column 113 is provided with a threaded hole, a through hole is formed in the circuit board 3, a fixing seat 122 corresponding to the threaded hole of each long column 113 is arranged on the lower fixing cover 12, a through hole is also formed in the fixing seat 122, the size of the mounting area 1211 is just consistent with the size of the circuit board 3 or slightly larger than the size of the circuit board 3, and after the circuit board 3 is placed in the safety area, the upper ring 11 and the lower fixing cover 12 are fixed through screws.

Specifically, the upper cover 21 is provided with a circle of convex ring 212 near the outermost ring, the base 22 is provided with a concave ring 223 corresponding to the convex ring 212 near the outermost ring, after the convex ring 212 is inserted into the concave ring 223, the outermost ring of the upper cover 21 and the outermost ring of the base 22 are closed, the inner side of the convex ring 212 is further connected with a plurality of reinforcing ribs 224, and the reinforcing ribs 224 are connected with each other.

The switching of 3 functions of circuit board is realized in the rotation of knob 2 accessible, rotate knob 2, because potentiometre 4 is connected with rotation knob 2, potentiometre 4 is as a variable potentiometre, and its size for regulating voltage and electric current, consequently the resistance of potentiometre 4 has also changed when the rotation rotates, thereby the voltage that leads to on the circuit board 3 and the size of electric current has changed, circuit board 3 exports different signals according to the size of different voltage and electric current, realizes the function switching.

Example 2:

as shown in fig. 6, embodiment 2 is different from embodiment 1 in that: the light-transmitting channel 54 and the connecting seat 5 in the embodiment 2 are not of an integral structure, the connecting seat 5 is not completely transparent, but a groove for installing the light-transmitting channel 54 is formed in the connecting seat 5, and the light-transmitting channel 54 is fixed in the groove of the connecting seat 5 in a buckling mode, a glue mode and the like, so that the light-shielding cover 55 is not needed to shield other parts, and other structures of the switch of the knob 2 are the same. This setting can be removed this part of lens hood 55 from, also removes the installation step of lens hood 55 from, and the material restriction of connecting seat 5 is littleer, can adopt lower cost's material.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the housing 1, the knob 2, the circuit board 3, the potentiometer 4, the connecting socket 5, the rotating shaft 51, the mounting shaft 52, the spring 521, the positioning member 522, the positioning ring 6, the claw 61, the insertion hole 31, the lamp bead 32, the light-transmitting channel 54, the light-shielding cover 55, the upper cover 21, the base 22, the mounting post 211, the mounting tube 222, the convex ring 212, the concave ring 223, the reinforcing rib 224, the upper ring 11, the lower fixing cover 12, the convex edge 225, the fixing claw 226, the step 111, the limit stop edge 112, the mounting groove 121, the mounting region 1211, the long post 113, the fixing seat 122, the positioning groove 62, and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. The utility model provides a rotary switch, includes casing (1) and rotary mounting knob (2) on casing (1), its characterized in that:

a circuit board (3) and a potentiometer (4) arranged on the circuit board (3) are arranged in the shell (1), and the potentiometer (4) is in rotation stopping fit with the knob (2);

the circuit board (3) on be equipped with gear circle (6), gear circle (6) be equipped with gear groove (62) along gear circle (6) circumferencial direction even setting, gear groove (62) realize the cooperation with knob (2) through canceling release mechanical system.

2. A rotary switch according to claim 1, wherein the rotary knob (2) is detachably mounted with a connecting base (5), and the connecting base (5) is provided with a rotating shaft (51) for inserting the potentiometer (4).

3. The rotary switch according to claim 2, wherein the return mechanism comprises a hollow mounting shaft (52) arranged on the connecting base (5), a spring (521) and a positioning member (522) arranged in the mounting shaft (52), and two ends of the spring (521) are respectively connected with the mounting shaft (52) and the positioning member (522); the head of the positioning piece (522) is arc-shaped, and the gear groove (62) is arc-shaped.

4. A rotary switch according to claim 3, wherein the bottom of the shift ring (6) is uniformly provided with claws (61) in the circumferential direction, and the circuit board (3) is provided with insertion holes (31) for engaging the claws (61).

5. The rotary switch according to claim 2, wherein a lamp bead (32) is disposed on the circuit board (3), a light-transmitting channel (54) for light of the lamp bead (32) to pass through is disposed on the connecting seat (5), and a light-transmitting region corresponding to the light-transmitting channel (54) is disposed on the rotary switch (2).

6. A rotary switch according to claim 5, wherein the connecting base (5) is further provided with a light shield (55) partially covering the lower surface of the connecting base (5).

7. The rotary switch according to claim 6, wherein the rotary knob (2) comprises an upper cover (21) and a base (22), the upper cover (21) is provided with a mounting column (211), the base (22) is provided with a through hole for the mounting column (211) to pass through, and the connecting base (5) is provided with a mounting tube (222) matched with the mounting column (211).

8. A rotary switch according to claim 7, wherein the upper cover (21) is provided with a convex ring (212), and the base (22) is provided with a concave ring (223) which is matched with the convex ring (212).

9. A rotary switch according to claim 7, wherein said housing (1) comprises an upper ring (11) and a lower fixing cover (12) which are screw-coupled to each other, said upper ring (11) being provided with a mounting hole for mounting the rotary knob (2), said lower fixing cover (12) being provided with a mounting groove (121) for mounting the circuit board (3); the upper ring (11) comprises a plurality of long columns (113), and the lower fixing cover (12) is provided with a fixing seat (122) matched with the long columns (113).

10. A rotary switch according to claim 9, wherein the base (22) comprises a flange (225) and a fixing jaw (226) disposed on the flange (225), and the upper ring (11) comprises a limiting rib (112) for limiting the rotary knob (2) by engaging with the fixing jaw (226).

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