CN219017345U - Potentiometer with thumb wheel assembly - Google Patents

Abstract

The utility model discloses a potentiometer with a thumb wheel assembly, which comprises a shell, a thumb wheel, a middle seat, a rotor, a U-shaped torsion spring, an electric brush and a carbon sheet, wherein the shell is provided with a plurality of grooves; the shell is arranged on the left side of the middle seat, a first cavity is formed in the shell, the dial wheel is rotatably arranged in the first cavity, and the dial wheel is provided with a dial wheel shaft; the right end of the middle seat is provided with a second cavity, the rotor is rotatably arranged in the second cavity, and the lower end of the second cavity is provided with a torsion spring arm clamping groove; the left shaft of the rotor is connected with the thumb wheel shaft after moving left through the middle seat; the rotor main part left side of rotor is equipped with "U" type groove, "U" type groove around the periphery of rotor left side axle, "U" type groove's lower extreme is equipped with the opening, and "U" type torsional spring is installed in "U" type groove, "U" type torsional spring's lower extreme is equipped with two torsional spring arms, and after two torsional spring arms passed through the opening down respectively, the card was located in the torsional spring arm draw-in groove. The utility model has high reliability, less parts in resetting and assembling cost.

Description

Potentiometer with thumb wheel assembly

Technical Field

The utility model relates to the technical field of potentiometers, in particular to a potentiometer with a thumb wheel assembly.

Background

At present, unmanned aerial vehicles, submarines, remote robots and other unmanned equipment are required to be used for a remote control handle controller, and a control button, a rocker potentiometer and a potentiometer with a thumb wheel assembly are usually arranged on the remote control handle controller, wherein the potentiometer with the thumb wheel assembly is mainly used for controlling cameras on the unmanned aerial vehicles, submarines, remote robots and other unmanned equipment, and the thumb wheel of the potentiometer with the thumb wheel assembly is shifted to adjust the zoom-out or magnification ratio of the camera, or the up-down rotation angle of the camera. Of course, the potentiometer with the thumb wheel assembly is not limited to adjusting the angle of the camera, and can be used for realizing other needed control commands.

In the prior art, a potentiometer with a thumb wheel assembly generally comprises a base, a thumb wheel, a rotor, a sensor and a PCB (printed circuit board), wherein the thumb wheel is rotatably arranged in the base, one side of the base is provided with a cavity for installing the rotor, one end of the rotor is in inductive fit with the sensor, and the sensor is arranged on the PCB. The potentiometer with the thumb wheel assembly mainly has the problems that the potentiometer does not have a reset and centering function, and when the thumb wheel is shifted to rotate to a certain angle, the thumb wheel cannot be automatically reset to an initial position, so that great inconvenience is brought to use; in addition, the potentiometer with the thumb wheel assembly has the problem that the sensor and the PCB are high in cost.

With the development of technology, a thumb wheel potentiometer with reset and return functions gradually appears on the market, see Chinese patent document CN211858299U, which discloses an anti-shaking rotary potentiometer, comprising a base, wherein a circuit board, a conductive elastic sheet, a rotary seat, a torsion component and an upper cover are sequentially arranged on the base, the conductive elastic sheet is fixedly connected with the lower end of the rotary seat, and the rotary seat comprises a base plate, an upper guide pillar, a lower guide pillar and an arc thumb wheel, wherein the upper guide pillar and the lower guide pillar are respectively connected with the upper end and the lower end of the base plate, and the arc thumb wheel is connected with one end of the base plate. The backing plate is also connected with a lug, the torsion component comprises a scissor clamp and a tension spring, and the scissor clamp and the tension spring are used as components for driving the rotating seat to reset. The shear tool holder is provided with two tool handles and two tool edges, a tension spring is connected between the two tool handles and used for tensioning the two tool handles, a clamping gap is formed between the two tool edges, a lug is positioned at the inner side of the clamping gap and used as an upper extension part of a base plate, and when the base plate rotates, the lug can transfer the torsion of the torsion assembly onto the base plate due to the clamping limiting effect of the two tool edges, so that the arc-shaped thumb wheel can automatically reset.

However, the patent CN211858299U also has the following technical problems: firstly, a rotor provided with a conductive spring piece (namely an electric brush) is directly arranged on the inner side of an arc-shaped poking wheel, the arc-shaped poking wheel is not independently positioned, but is positioned through the rotor, in the poking process of the arc-shaped poking wheel, the arc-shaped poking wheel is easily influenced by a poking angle of a user, lateral offset occurs, the positioning stability of the arc-shaped poking wheel and the rotor is influenced, and the contact stability among the rotor, the conductive spring piece and a circuit board is further influenced; two scissor clamping mechanisms and a tension spring which are matched with each other are needed to be arranged on the torsion component, so that the torsion component has the advantages of a large number of parts and high manufacturing and assembling cost; in addition, the more parts of the torsion assembly, the more difficult it is to ensure reliability.

Disclosure of Invention

The utility model aims to solve the technical problems of the prior art and provides the potentiometer with the thumb wheel assembly, which has the advantages of high reliability, less reset and middle part and low manufacturing and assembly cost.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a potentiometer with a thumb wheel assembly comprises a shell, a thumb wheel, a middle seat, a rotor, a U-shaped torsion spring, an electric brush and a carbon sheet; the shell is arranged on the left side of the middle seat, a first cavity is formed in the shell, the dial wheel is rotatably arranged in the first cavity, and the dial wheel is provided with a dial wheel shaft; the right end of the middle seat is provided with a second cavity, the rotor is rotatably arranged in the second cavity, and the lower end of the second cavity is provided with a torsion spring arm clamping groove; the rotor comprises a rotor main body, wherein the left end of the rotor main body is connected with a rotor left shaft, and the rotor left shaft is connected with a thumb wheel shaft after moving left through the middle seat; the left side of the rotor main body is provided with a U-shaped groove, the U-shaped groove surrounds the periphery of the left shaft of the rotor, the lower end of the U-shaped groove is provided with an opening, the U-shaped torsion spring is arranged in the U-shaped groove, the lower end of the U-shaped torsion spring is provided with two torsion spring arms, and the two torsion spring arms are clamped in the torsion spring arm clamping grooves after passing through the opening downwards respectively; the electric brush is arranged on the right side of the rotor main body, the carbon sheet is arranged on the right side of the electric brush, and the carbon sheet is in contact fit with the electric brush.

Preferably, the first cavity of the shell is a fan-shaped cavity with an empty upper end, the left side of the first cavity is provided with a shaft sleeve, and the left end of a dial wheel shaft of the dial wheel is rotatably inserted into the shaft sleeve; the dial wheel is a fan-shaped dial wheel, and the upper end of the dial wheel is exposed out of the first cavity upwards; the right end of a thumb wheel shaft of the thumb wheel is provided with a first shaft hole, and the left end of a left shaft of the rotor is inserted into the first shaft hole.

Preferably, the right end of the shell is provided with a plurality of first positioning columns and first screw holes, the left end of the middle seat is provided with a plurality of first positioning holes and second screw holes, the first positioning columns are inserted into the corresponding first positioning holes, and screws are screwed between the first screw holes and the second screw holes; the first shaft hole is a round shaft hole with a chamfered edge, and the left shaft of the rotor is a round shaft with a chamfered edge.

Preferably, the second cavity of well seat is symmetrical around, the front lower extreme and the back lower extreme of the inner chamber wall of second cavity are equipped with spacing lug respectively, the rotor main part of rotor is symmetrical around, the front lower extreme and the back lower extreme of rotor main part are equipped with fan annular spacing groove respectively, spacing lug and fan annular spacing groove limit fit mutually.

Preferably, the torsion spring arm clamping groove is provided with a front groove wall and a rear groove wall which are symmetrical to each other, the opening part of the U-shaped groove is provided with a front opening wall and a rear opening wall which are symmetrical to each other, the two torsion spring arms of the U-shaped torsion spring are respectively a front torsion spring arm and a rear torsion spring arm, the front torsion spring arm elastically abuts against the side surfaces of the front opening wall and the front groove wall, and the rear torsion spring arm elastically abuts against the side surfaces of the rear opening wall and the rear groove wall.

Preferably, the front lower end and the rear lower end of the rotor main body are respectively provided with a stop block for preventing the U-shaped torsion spring from being pulled out of the U-shaped groove to the left.

Preferably, the bottom wall of the second cavity of the middle seat is provided with a first through hole and an annular groove, the left side of the left shaft of the rotor movably passes through the first through hole, the left side of the rotor main body is provided with a circle of raised strips, and the raised strips are slidably arranged in the annular groove.

Preferably, the potentiometer with the thumb wheel assembly further comprises a baffle plate, the baffle plate is mounted on the right side of the carbon plate, a plurality of second positioning columns are arranged on the right side of the middle seat, the carbon plate and the baffle plate are respectively provided with a plurality of second positioning holes, and the second positioning columns are inserted into the corresponding second positioning holes.

Preferably, a second through hole is formed in the middle of the carbon sheet, three metal pins are connected to the lower end of the carbon sheet, and a second shaft hole is formed in the middle of the left side of the baffle; the right end of the rotor main body is connected with a rotor right shaft, and the rotor right shaft is rotatably inserted into a second shaft hole of the baffle after passing through a second through hole of the carbon plate in a right moving way.

The beneficial effects of the utility model are as follows: firstly, because the thumb wheel is rotatably arranged in the first cavity of the shell, the rotor is rotatably arranged in the second cavity of the middle seat, and the left shaft of the rotor is connected with the thumb wheel shaft after moving left and right through the middle seat, the thumb wheel and the rotor can be independently arranged and positioned, and the rotating force is transmitted between the thumb wheel and the rotor only through the thumb wheel shaft and the left shaft of the rotor; when the dial wheel is influenced by the toggle angle of a user and laterally deflects, the rotor can still stably work in the second cavity and is not influenced by the lateral deflection of the dial wheel, so that the stability of installation and contact among the rotor, the electric brush and the carbon sheet is ensured; the lower end of the second cavity is provided with a torsion spring arm clamping groove, the left side of the rotor main body is provided with a U-shaped groove, the U-shaped groove surrounds the periphery of the left shaft of the rotor, the lower end of the U-shaped groove is provided with an opening, a U-shaped torsion spring is arranged in the U-shaped groove, the lower end of the U-shaped torsion spring is provided with two torsion spring arms, and the two torsion spring arms are clamped in the torsion spring arm clamping groove after passing through the opening downwards respectively, so that when the rotor rotates forwards or reversely, the two torsion spring arms are blocked by the inner wall of the opening of the U-shaped groove and blocked by the groove wall of the torsion spring arm clamping groove respectively, and the rotor has an automatic resetting and centering function; because the automatic resetting and centering structure of the utility model only needs to additionally add a U-shaped torsion spring and does not need a scissor clamping mechanism in the prior art, the number of parts is very small, the manufacturing and assembling cost is low, and the reliability is further ensured.

Drawings

Fig. 1 is one of the overall construction diagrams of the present utility model.

FIG. 2 is a second overall block diagram of the present utility model.

Fig. 3 is a longitudinal sectional view of the structure of the present utility model.

Fig. 4 is one of the dispersion structure diagrams of the present utility model.

Fig. 5 is an enlarged structural view of the rotor of fig. 4.

FIG. 6 is a second block diagram of the dispersion structure of the present utility model.

Detailed Description

The structural and operational principles of the present utility model will be described in further detail below with reference to the accompanying drawings.

In the description of the present utility model, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, in particular, based on the coordinate directions shown in fig. 1. The foregoing terminology is for the purpose of describing the utility model only and is not intended to indicate or imply that the device or element being referred to must be in a particular orientation, be constructed and operate in a particular orientation, and is therefore not to be construed as limiting the utility model.

As shown in fig. 1-6, the utility model relates to a potentiometer with a thumb wheel assembly, which comprises a shell 1, a thumb wheel 2, a middle seat 3, a rotor 4, a U-shaped torsion spring 5, an electric brush 6 and a carbon sheet 7; the shell 1 is arranged on the left side of the middle seat 3, a first cavity 11 is formed in the shell 1, the dial wheel 2 is rotatably arranged in the first cavity 11, and the dial wheel 2 is provided with a dial wheel shaft 21; the right end of the middle seat 3 is provided with a second cavity 31, the rotor 4 is rotatably arranged in the second cavity 31, and the lower end of the second cavity 31 is provided with a torsion spring arm clamping groove 32; the rotor 4 comprises a rotor main body 41, a rotor left shaft 42 is connected to the left end of the rotor main body 41, and the rotor left shaft 42 is connected with the poking wheel shaft 21 after moving left through the middle seat 3; the left side of the rotor main body 41 is provided with a U-shaped groove 43, the U-shaped groove 43 surrounds the periphery of the rotor left shaft 42, the lower end of the U-shaped groove 43 is provided with an opening 44, the U-shaped torsion spring 5 is arranged in the U-shaped groove 43, the lower end of the U-shaped torsion spring 5 is provided with two torsion spring arms 51, and the two torsion spring arms 51 are respectively clamped in the torsion spring arm clamping grooves 32 after passing through the opening 44 downwards; the brush 6 is mounted on the right side of the rotor body 41, the carbon sheet 7 is mounted on the right side of the brush 6, and the carbon sheet 7 is in contact fit with the brush 6. According to the utility model, the poking wheel 2 and the rotor 4 can be independently installed and positioned, and the poking wheel 2 and the rotor 4 only transmit rotary force through the poking wheel shaft 21 and the rotor left shaft 42; when the dial wheel 2 is influenced by the toggle angle of a user and laterally deflects, the rotor 4 can still stably work in the second cavity 31 and is not influenced by the lateral deflection of the dial wheel 2, so that the stability of installation and contact among the rotor 4, the electric brush 6 and the carbon sheet 7 is ensured; when the rotor 4 rotates forwards or reversely, the two torsion spring arms 51 are blocked by the inner wall of the opening part 44 of the U-shaped groove 43 and the groove wall of the torsion spring arm clamping groove 32, so that the rotor 4 has an automatic resetting and centering function; because the automatic resetting and centering structure of the utility model only needs to additionally add a U-shaped torsion spring 5 and does not need a scissor clamping mechanism in the prior art, the number of parts is very small, the manufacturing and assembling cost is low, and the reliability is further ensured.

As shown in fig. 1-6, the first cavity 11 of the housing 1 is a fan-shaped cavity with an open upper end, the left side of the first cavity 11 is provided with a shaft sleeve 12, and the left end of a dial shaft 21 of the dial 2 is rotatably inserted into the shaft sleeve 12; the dial wheel 2 is a fan-shaped dial wheel, and the upper end of the dial wheel 2 is exposed upwards to form a first cavity 11; the right end of the poking wheel shaft 21 of the poking wheel 2 is provided with a first shaft hole 22, and the left end of the rotor left shaft 42 is inserted into the first shaft hole 22. The right end of the shell 1 is provided with a plurality of first positioning columns 13 and first screw holes 14, the left end of the middle seat 3 is provided with a plurality of first positioning holes 33 and second screw holes 34, the first positioning columns 13 are inserted into the corresponding first positioning holes 33, and screws 35 are screwed between the first screw holes 14 and the second screw holes 34; the first shaft hole 22 is a chamfered circular shaft hole, and the rotor left shaft 42 is a chamfered circular shaft. This enables the rotor 4 to rotate with the thumbwheel 2.

As shown in fig. 1-6, the second cavity 31 of the middle seat 3 is front-to-back symmetrical, the front lower end and the rear lower end of the inner cavity wall of the second cavity 31 are respectively provided with a limit bump 36, the rotor main body 41 of the rotor 4 is front-to-back symmetrical, the front lower end and the rear lower end of the rotor main body 41 are respectively provided with a fan-shaped limit groove 45, and the limit bumps 36 are in limit fit with the fan-shaped limit groove 45. This limits the maximum angular range of rotor rotation.

As shown in fig. 1-6, the torsion spring arm clamping groove 32 has a front groove wall 321 and a rear groove wall 322 that are symmetrical to each other, the opening 44 of the "U" shaped groove 43 has a front opening wall 441 and a rear opening wall 442 that are symmetrical to each other, the two torsion spring arms 51 of the "U" shaped torsion spring 5 are a front torsion spring arm 511 and a rear torsion spring arm 512, respectively, the front torsion spring arm 511 elastically abuts against the sides of the front opening wall 441 and the front groove wall 321, and the rear torsion spring arm 512 elastically abuts against the sides of the rear opening wall 442 and the rear groove wall 322. The front lower end and the rear lower end of the rotor body 41 are respectively provided with a stopper 46 for preventing the U-shaped torsion spring from being pulled out of the U-shaped groove to the left.

As shown in fig. 1-6, the bottom wall of the second cavity 31 of the middle seat 3 is provided with a first through hole 37 and an annular groove 38, the left side of the rotor left shaft 42 moves leftwards through the first through hole 37, the left side of the rotor main body 41 is provided with a circle of raised strips 47, and the raised strips 47 are slidably arranged in the annular groove 38.

As shown in fig. 1-6, the potentiometer with a thumb wheel assembly further comprises a baffle plate 8, the baffle plate 8 is mounted on the right side of the carbon plate 7, a plurality of second positioning columns 39 are arranged on the right side of the middle seat 3, the carbon plate 7 and the baffle plate 8 are respectively provided with a plurality of second positioning holes 71, and the second positioning columns 39 are inserted into the corresponding second positioning holes 71. The middle part of the carbon sheet 7 is provided with a second through hole 72, the lower end of the carbon sheet 7 is connected with three metal pins 73, and the middle part of the left side of the baffle 8 is provided with a second shaft hole 81; the right end of the rotor body 41 is connected with a rotor right shaft 48, and the rotor right shaft 48 is rotatably inserted into a second shaft hole 81 of the baffle plate 8 after passing through a second through hole 72 of the carbon plate 7 in a right-hand movement manner.

In the foregoing, only the preferred embodiment of the present utility model is described, and any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical solutions of the present utility model fall within the scope of the technical solutions of the present utility model.

Claims (9)

1. The potentiometer with the thumb wheel assembly is characterized in that: comprises a shell, a thumb wheel, a middle seat, a rotor, a U-shaped torsion spring, an electric brush and a carbon sheet; the shell is arranged on the left side of the middle seat, a first cavity is formed in the shell, the dial wheel is rotatably arranged in the first cavity, and the dial wheel is provided with a dial wheel shaft; the right end of the middle seat is provided with a second cavity, the rotor is rotatably arranged in the second cavity, and the lower end of the second cavity is provided with a torsion spring arm clamping groove; the rotor comprises a rotor main body, wherein the left end of the rotor main body is connected with a rotor left shaft, and the rotor left shaft is connected with a thumb wheel shaft after moving left through the middle seat; the left side of the rotor main body is provided with a U-shaped groove, the U-shaped groove surrounds the periphery of the left shaft of the rotor, the lower end of the U-shaped groove is provided with an opening, the U-shaped torsion spring is arranged in the U-shaped groove, the lower end of the U-shaped torsion spring is provided with two torsion spring arms, and the two torsion spring arms are clamped in the torsion spring arm clamping grooves after passing through the opening downwards respectively; the electric brush is arranged on the right side of the rotor main body, the carbon sheet is arranged on the right side of the electric brush, and the carbon sheet is in contact fit with the electric brush.

2. The potentiometer with thumbwheel assembly as in claim 1 wherein: the first cavity of the shell is a fan-shaped cavity with an empty upper end, the left side of the first cavity is provided with a shaft sleeve, and the left end of a dial wheel shaft of the dial wheel is rotatably inserted into the shaft sleeve; the dial wheel is a fan-shaped dial wheel, and the upper end of the dial wheel is exposed out of the first cavity upwards; the right end of the thumb wheel shaft of the thumb wheel is provided with a first shaft hole, and the left end of the left shaft of the rotor is inserted into the first shaft hole.

3. The potentiometer with thumbwheel assembly as in claim 2 wherein: the right end of the shell is provided with a plurality of first positioning columns and first screw holes, the left end of the middle seat is provided with a plurality of first positioning holes and second screw holes, the first positioning columns are inserted into the corresponding first positioning holes, and screws are screwed between the first screw holes and the second screw holes; the first shaft hole is a round shaft hole with a chamfered edge, and the left shaft of the rotor is a round shaft with a chamfered edge.

4. The potentiometer with thumbwheel assembly as in claim 1 wherein: the second cavity of well seat is symmetrical around, the front lower extreme and the back lower extreme of the inner chamber wall of second cavity are equipped with spacing lug respectively, the rotor main part of rotor is symmetrical around, the front lower extreme and the back lower extreme of rotor main part are equipped with fan annular spacing groove respectively, spacing lug and the spacing cooperation of fan annular spacing groove mutually.

5. The potentiometer with thumbwheel assembly as in claim 1 wherein: the torsion spring arm clamping groove is provided with a front groove wall and a rear groove wall which are symmetrical with each other, an opening part of the U-shaped groove is provided with a front opening wall and a rear opening wall which are symmetrical with each other, two torsion spring arms of the U-shaped torsion spring are respectively a front torsion spring arm and a rear torsion spring arm, the front torsion spring arm elastically abuts against the side surfaces of the front opening wall and the front groove wall, and the rear torsion spring arm elastically abuts against the side surfaces of the rear opening wall and the rear groove wall.

6. The potentiometer with thumbwheel assembly as in claim 5 wherein: the front lower end and the rear lower end of the rotor main body are respectively provided with a stop block for preventing the U-shaped torsion spring from deviating from the U-shaped groove left.

7. The potentiometer with thumbwheel assembly as in claim 1 wherein: the cavity diapire of the second cavity of well seat is equipped with first through-hole and ring channel, the left activity of rotor left side axle passes first through-hole, the left side of rotor main part is equipped with round sand grip, the sand grip is arranged in the ring channel in slidable.

8. The potentiometer with thumbwheel assembly as in any one of claims 1-7 wherein: still include the baffle, the baffle is installed in the right side of carbon sheet, the right side of well seat is equipped with a plurality of second reference columns, carbon sheet and baffle are equipped with a plurality of second locating holes respectively, the second reference column inserts in the second locating hole that corresponds.

9. The potentiometer with thumbwheel assembly as in claim 8 wherein: the middle part of the carbon sheet is provided with a second through hole, the lower end of the carbon sheet is connected with three metal pins, and the middle part of the left side of the baffle is provided with a second shaft hole; the right end of the rotor main body is connected with a rotor right shaft, and the rotor right shaft is rotatably inserted into a second shaft hole of the baffle after passing through a second through hole of the carbon plate in a right moving way.

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