CN213691627U - Potentiometer with switch - Google Patents

Abstract

The utility model provides a potentiometer with a switch, which comprises an outer shell, a knob cover, a conductive pin, a switch pin, a rotor, a metal sheet, a resistance card substrate and a base plate, wherein the knob cover can be rotatably assembled on the outer shell and fixedly connected with the rotor; the base plate has first through-hole and the second through-hole that link up from top to bottom and forms the breach of stepping down on the upper surface of base plate, and the switch pin includes first switch pin and second switch pin, and in the first through-hole of base plate was worn to locate by first switch pin, its upper end had the kink that extends to the breach of stepping down, and in the second through-hole of base plate was worn to locate by second switch pin, its upper end had the elasticity kink that extends to the breach of stepping down and connect the rotor. The potentiometer has the functions of switching and adjusting resistance values, and is simple and stable in structure.

Description

Potentiometer with switch

Technical Field

The utility model relates to an accessory field of audiphone or earphone specifically is the potentiometre of adjusting the volume, and is specific again, relates to a potentiometre of taking switch.

Background

Potentiometers capable of changing resistance values are commonly used for volume control of hearing aids or earphones, and switching control of the hearing aids or the earphones is usually additionally arranged, so that more parts are required, assembly is complicated during production and assembly, and cost is high; the operation is also more complicated when in use.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a take potentiometre of switch can possess the function of switch switching and resistance adjustment simultaneously, and simple structure, stability.

In order to achieve the above purpose, the utility model provides a technical scheme as follows:

a potentiometer with a switch comprises an outer shell, a knob cover, a conductive pin, a switch pin, a rotor, a metal sheet, a resistor disc substrate and a base plate, wherein the rotor, the metal sheet, the resistor disc substrate and the base plate are arranged in the outer shell; the metal sheet is assembled at the bottom of the rotor and provided with a first end part and a second end part, the first end part of the metal sheet is positioned at the central shaft position of the rotor, the second end part can be in butt joint with the resistance sheet of the resistance sheet substrate in a sliding mode, and the number of the conductive pins is three, and the three conductive pins are respectively in electric contact with the two ends of the resistance sheet and the first end part of the metal sheet; the base plate has first through-hole and the second through-hole that link up from top to bottom and forms the breach of stepping down on the upper surface of base plate, the switch pin includes first switch pin and second switch pin, first switch pin wears to locate in the first through-hole of base plate, and its upper end has the kink that extends to the breach of stepping down, in the second through-hole of base plate is worn to locate by the second switch pin, and its upper end has the elasticity kink that extends to the breach of stepping down and connect the rotor.

Further, the shell body has a cavity and communicates the upper shed and the under shed of cavity, rotor, sheetmetal, resistance card substrate and base plate top-down set up respectively in the cavity of shell body, the rotor has the spliced pole that stretches out through the upper shed, but knob lid rotatable assembly is on the shell body and fixed connection the spliced pole of rotor.

Furthermore, the cross section of the outer shell is n-shaped, the outer shell is provided with a cylindrical body forming a cavity and a cover plate arranged at the upper end of the cylindrical body, the upper opening is formed in the cover plate, and the knob cover can be rotatably assembled on the cover plate.

Further, the upper surface of apron is protruding to have a spacing convex part, still includes the intermediate junction lid, the central point of intermediate junction lid puts the open-ended central opening who offers the upper shed that corresponds the shell body, the spliced pole of rotor is fixed to be worn to locate in the central opening realize with the fixed connection of intermediate junction lid, the intermediate junction is covered and has still been seted up the arc guide way, spacing convex part cooperates in the arc guide way and makes the intermediate junction lid have certain angle's rotation range, the knob lid fixed cover is covered in the intermediate junction.

Furthermore, the spliced pole of rotor comprises two opposition elastic support that just the interval set up, and two elastic support all wear to locate in the central opening of intermediate junction lid, still includes central stopper, central stopper in between two elastic support and then with the common centre gripping of intermediate junction lid elastic support, the intermediate junction lid still extends to the clearance between two elastic support and has the protruding muscle of spacing.

Furthermore, the outer surface of the middle connecting cover is provided with a plurality of concave parts, a plurality of fixing convex parts are protruded on the inner wall of the knob cover, the knob cover covers the middle connecting cover, and the fixing convex parts are fixedly inserted into the concave parts of the middle connecting cover.

Further, the base plate is located at the lowermost layer and forms fixed and sealing fit with the outer shell.

Furthermore, the inner wall of the outer shell is inwards protruded with a positioning convex rib, the outer side wall of the base plate is provided with a positioning notch, and the positioning notch of the base plate is matched with the positioning convex rib of the outer shell.

Furthermore, the metal sheet is in a cross-shaped structure and is provided with a first end portion, a second end portion opposite to the first end portion, a third end portion and a fourth end portion opposite to the third end portion, the third end portion and the fourth end portion are tilted upwards and fixed on the rotor, the first end portion is located at the position of the central shaft of the rotor, and the second end portion can be in slidable butt joint with the resistor sheet of the resistor sheet substrate.

Through the utility model provides a technical scheme has following beneficial effect:

when the knob cover is rotated, the rotor is driven to rotate, the rotor controls the metal sheet to slide on the resistor sheet to adjust the resistance value between the conductive pins in the rotating process, and synchronously drives the elastic bent parts of the second switch pins to deform on the yielding notches of the substrate, and finally the elastic bent parts are contacted or separated from the first switch pins, so that the first switch pins and the second switch pins are switched on or off, and the switching of the devices is realized. The potentiometer with the switch provided by the scheme can simultaneously have the functions of switch switching and resistance value adjustment, and is simple and stable in structure.

Drawings

FIG. 1 is a schematic external view of a potentiometer with a switch according to an embodiment;

FIG. 2 is an external view of the potentiometer with switch at another angle in the embodiment;

FIG. 3 is a sectional view of a potentiometer with a switch according to an embodiment;

fig. 4 is an exploded view of the potentiometer with a switch according to the embodiment.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 4, the potentiometer with a switch provided in this embodiment includes an outer casing 10, a knob cover 80, a conductive pin 61, a switch pin, and a rotor 20, a metal sheet 30, a resistor sheet substrate 40 (i.e., a substrate with a resistor sheet 41) and a base plate 50 that are disposed in the outer casing 10, specifically, the outer casing 10 has a cavity 103, and an upper opening 101 and a lower opening 102 that communicate with the cavity 103, and the rotor 20, the metal sheet 30, the resistor sheet substrate 40, and the base plate 50 are disposed in the cavity 103 of the outer casing 10 from top to bottom, respectively. The knob cover 80 is rotatably assembled on the outer housing 10 and fixedly connected with the rotor 20; specifically, the rotor 20 has a connection post 21 protruding through the upper opening 101, and the knob cover 80 is rotatably assembled on the outer housing 10 and fixedly connected to the connection post 21 of the rotor 20.

The metal sheet 30 is assembled at the bottom of the rotor 20 and has a first end and a second end, the first end of the metal sheet 30 is located at the central axis of the rotor 20, the second end can be in sliding contact with the resistive sheet 41 of the resistive sheet substrate 40, the number of the conductive pins 61 is three, and the three conductive pins 61 respectively electrically contact two ends of the resistive sheet 41 and the first end of the metal sheet 30; specifically, the three conductive pins 61 are a first conductive pin 611, a second conductive pin 612, and a third conductive pin 613, the first conductive pin 611 and the second conductive pin 612 are respectively in electrical contact with two ends of the resistor sheet 41, and the third conductive pin 613 is in electrical contact with the first end of the metal sheet 30, but when the rotor 20 is rotated, the second end of the metal sheet 30 slides on the resistor sheet 41, so as to change the resistance between the first conductive pin 611 and the third conductive pin 613 and the resistance between the second conductive pin 612 and the third conductive pin 613, and thus adjust the resistance.

The substrate 50 has a first through hole 51 and a second through hole 52 which are vertically through, and a abdicating notch 53 formed on the upper surface of the substrate 50, the switch pins include a first switch pin 62 and a second switch pin 63, the first switch pin 62 is inserted into the first through hole 51 of the substrate 50, the upper end portion of the first switch pin has a bending portion 621 extending to the abdicating notch 53, the second switch pin 63 is inserted into the second through hole 52 of the substrate 50, and the upper end portion of the second switch pin has an elastic bending portion 631 extending to the abdicating notch 53 and connected to the rotor 20; specifically, the end of the elastic bending part 631 extends upward to form an insertion end 632, and is inserted into the rotor 20 through the insertion end 632. When the rotor 20 is rotated, the elastic bending portion 631 can be driven to bend and deform in the abdicating notch 53, so as to finally realize the connection or disconnection between the first switch pin 62 and the second switch pin 63 (i.e., when the elastic bending portion 631 bends and deforms to a specific position, the elastic bending portion can contact with the bending portion 621 of the first switch pin 62 to realize the connection), and further realize the switching of the device. The arrangement of the abdicating notch 53 can provide an action space for the elastic bending part 631, so that the action stability is better.

The potentiometer with the switch provided by the scheme can simultaneously have the functions of switch switching and resistance value adjustment, and is simple and stable in structure.

Further, in this embodiment, the outer casing 10 has an n-shaped cross section, and has a cylindrical body 11 forming a cavity 103 and a cover plate 12 disposed at an upper end of the cylindrical body 11, the upper opening 101 is formed on the cover plate 12, and the knob cover 80 is rotatably mounted on the cover plate 12. The cover plate 12 is provided to limit the position of the inner member (e.g., rotor) from coming out of the upper opening 101. Of course, in other embodiments, the structure of the outer case is not limited thereto.

Still further, the upper surface of the cover plate 12 protrudes with a limiting convex portion 13, and further includes an intermediate connection cover 70, a central opening 71 corresponding to the upper opening 101 of the outer shell 10 is provided at a central position of the intermediate connection cover 70, the connection column 21 of the rotor 20 is fixedly arranged in the central opening 71 in a penetrating manner to realize a fixed connection with the intermediate connection cover 70, the intermediate connection cover 70 is further provided with an arc-shaped guide groove 73, and the limiting convex portion 13 is fitted in the arc-shaped guide groove 73 to enable the intermediate connection cover 70 to have a rotation range of a certain angle, which depends on the length of the arc-shaped guide groove 73, so that the rotation range of the rotor 20 can be well limited, and the rotor 20 is prevented from over-rotating. The knob cover 80 is fixedly covered on the intermediate connection cover 70, and the rotor 20 is rotated by rotating the knob cover 80. More specifically, a plurality of ribs 81 are protruded on the surface of the knob cover 80 for facilitating the rotation by hand-held operation.

Still further, the spliced pole 21 of rotor 20 comprises two opposite elastic support columns that just set up at the interval, and two elastic support columns all wear to locate in the central opening 71 of intermediate junction lid 70, still includes central stopper 90, central stopper 90 stopper and then with the common centre gripping of intermediate junction lid 70 between two elastic support columns, intermediate junction lid 70 still extends to the clearance between two elastic support columns and has spacing protruding muscle (not shown), so, can be fine play the circumference fixed, effectively prevent the phenomenon of skidding to appear when rotatory between intermediate junction lid 70 and the rotor 20. Meanwhile, the fixed connection in the above manner facilitates assembly and disassembly, and when the assembly is performed, the connecting column 21 is inserted into the central opening 71 of the middle connecting cover 70, and when the insertion is performed, the two elastic support columns of the connecting column 21 deform inwards to ensure smooth insertion; the center plug 90 is then inserted between the two resilient legs to secure the two legs. When the connecting column 21 is detached, the central plug 90 is firstly pulled out, the fixing of the connecting column 21 is released, then the connecting column 21 is pulled out from the central opening 71 of the intermediate connecting cover 70, and in the pulling-out process, the two elastic struts of the connecting column 21 can deform inwards to enable the pulling-out to be smooth.

Still further, the surface of intermediate junction lid 70 is equipped with a plurality of concave parts 72, the inner wall arch of knob lid 80 has a plurality of fixed convex parts (not shown), knob lid 80 covers on intermediate junction lid 70, fixed convex part is fixed to be inserted in locating in the concave part 72 of intermediate junction lid 70, realizes fine fixed, and when dismantling, as long as exert oneself slightly, can follow intermediate junction lid 70 with knob lid 80 and separate, simple structure, operation are swift.

Of course, in other embodiments, the fixing structure of the rotor 20 and the knob cover 80 is not limited thereto.

Further, in the present embodiment, the base plate 50 is located at the lowermost layer and forms a fixed and sealed fit with the outer casing 10. Among the components located inside the outer case 10, the upper end is restricted by the cover plate 12, and the lower end is restricted by the base plate 50, achieving stable assembly of the components. Of course, in other embodiments, this is not limiting.

More specifically, the inner wall of the outer shell 10 protrudes inward to form a positioning rib 14, the outer side wall of the base plate 50 is provided with a positioning notch 54, and the positioning notch 54 of the base plate 50 is matched with the positioning rib 14 of the outer shell 10, so that accurate assembly can be realized.

More specifically, three corresponding through holes (not shown) are formed in the base plate 50 and the resistor substrate 40, so that the three conductive pins 61 can be connected through the through holes.

Further, in this embodiment, the metal sheet 30 is in a cross-shaped structure, and has a first end portion, a second end portion opposite to the first end portion, a third end portion, and a fourth end portion opposite to the third end portion, the third end portion and the fourth end portion are tilted upward and fixed on the rotor 20, the first end portion is located at the central axis of the rotor 20, and the second end portion is in slidable contact with the resistive sheet 41 of the resistive sheet substrate 40, so that stable assembly of the metal sheet 30 is achieved. Of course, in other embodiments, the structure of the metal sheet 30 is not limited thereto.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. A potentiometer with a switch is characterized in that: the rotary knob comprises an outer shell, a rotary knob cover, a conductive pin, a switch pin, a rotor, a metal sheet, a resistor disc substrate and a base plate, wherein the rotor, the metal sheet, the resistor disc substrate and the base plate are arranged in the outer shell;

the metal sheet is assembled at the bottom of the rotor and provided with a first end part and a second end part, the first end part of the metal sheet is positioned at the central shaft position of the rotor, the second end part can be in butt joint with the resistance sheet of the resistance sheet substrate in a sliding mode, and the number of the conductive pins is three, and the three conductive pins are respectively in electric contact with the two ends of the resistance sheet and the first end part of the metal sheet;

the base plate has first through-hole and the second through-hole that link up from top to bottom and forms the breach of stepping down on the upper surface of base plate, the switch pin includes first switch pin and second switch pin, first switch pin wears to locate in the first through-hole of base plate, and its upper end has the kink that extends to the breach of stepping down, in the second through-hole of base plate is worn to locate by the second switch pin, and its upper end has the elasticity kink that extends to the breach of stepping down and connect the rotor.

2. A potentiometer with a switch as claimed in claim 1, wherein: the shell body has a cavity and communicates the upper shed and the under shed of cavity, rotor, sheetmetal, resistance card substrate and base plate top-down set up respectively in the cavity of shell body, the rotor has the spliced pole that stretches out through the upper shed, rotatable assembly on the shell body of knob lid and fixed connection the spliced pole of rotor.

3. A potentiometer with a switch as claimed in claim 2, wherein: the section of shell body is pi shape, has the tube-like body that forms the cavity and sets up in the apron of tube-like body upper end, the upper shed forms on the apron, the rotatable assembly of knob lid is on the apron.

4. A potentiometer with a switch according to claim 3, wherein: the upper surface of apron is protruding to have a spacing convex part, still includes the intermediate junction lid, the central point of intermediate junction lid puts the open-ended central opening who sets up corresponding shell body, the spliced pole of rotor is fixed wear to locate in the central opening realize with the fixed connection of intermediate junction lid, the intermediate junction is covered and has still been seted up the arc guide way, spacing convex part cooperates in the arc guide way and makes the intermediate junction lid have the rotation range of certain angle, the knob lid fixed cover is covered in the intermediate junction.

5. The potentiometer with switch as recited in claim 4, wherein: the spliced pole of rotor comprises two opposition elastic support that just the interval set up, and two elastic support all wear to locate in the central opening of intermediate junction lid, still includes central stopper, central stopper and then with the common centre gripping of intermediate junction lid between two elastic support, the intermediate junction lid still extends to the clearance between two elastic support and has the protruding muscle of spacing.

6. The potentiometer with switch as recited in claim 4, wherein: the outer surface of the middle connecting cover is provided with a plurality of concave parts, a plurality of fixing convex parts are protruded on the inner wall of the knob cover, the knob cover covers the middle connecting cover, and the fixing convex parts are fixedly inserted into the concave parts of the middle connecting cover.

7. A potentiometer with a switch as claimed in claim 2, wherein: the base plate is positioned at the lowest layer and forms fixed and sealed fit with the outer shell.

8. A potentiometer with a switch according to claim 7, wherein: the inner wall of the shell body is inwards protruded with a positioning convex rib, the outer side wall of the base plate is provided with a positioning notch, and the positioning notch of the base plate is matched with the positioning convex rib of the shell body.

9. A potentiometer with a switch as claimed in claim 1, wherein: the metal sheet is of a cross-shaped structure and is provided with a first end portion, a second end portion, a third end portion and a fourth end portion, wherein the second end portion is opposite to the first end portion, the fourth end portion is opposite to the third end portion, the third end portion and the fourth end portion are upwards tilted and fixed on the rotor, the first end portion is located at the position of a central shaft of the rotor, and the second end portion can be in slidable butt joint with the resistor sheet of the resistor sheet substrate.

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