CN218676629U

CN218676629U - Potentiometer

Info

Publication number: CN218676629U
Application number: CN202222671508.7U
Authority: CN
Inventors: 曾忠; 黄胜开
Original assignee: Guangdong Jinfu Intelligent Technology Co ltd
Current assignee: Guangdong Jinfu Intelligent Technology Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-03-21
Anticipated expiration: 2032-10-11

Abstract

The utility model discloses a potentiometer, which comprises a shell, a rotor, an electric brush and a carbon sheet, wherein the left side of the shell is provided with a concave cavity, the rotor and the electric brush are contained in the concave cavity, the electric brush is arranged on the rotor, the carbon sheet is arranged in the shell, and the carbon sheet is in contact fit with the electric brush; the shell is provided with a first middle hole which is communicated from left to right, a stepped groove is circumferentially arranged at the right end of the first middle hole, and at least one notch is formed in the bottom of the stepped groove; the carbon sheet is provided with a second middle hole which is communicated left and right, and the second middle hole corresponds to the first middle hole; the rotor is provided with a rotating shaft, the rotating shaft movably penetrates through the second middle hole and the first middle hole from left to right, and the right end of the rotating shaft is provided with at least one hook body; the hook body can block into the notch, makes the rotor can not rotate, or further passes the notch and then stretches to the right side of ladder groove, makes the rotor can rotate for the shell. The utility model discloses can lock the rotor in the assembling process, and can make the rotor rotatory again after the equipment.

Description

Potentiometer

Technical Field

The utility model relates to a potentiometer.

Background

At present, potentiometers are required to be used on remote control equipment such as unmanned planes, submarine models, remote control robots and the like.

The patent 201220459499.9 discloses a rocker carbon film potentiometer, which comprises a carbon film resistor, a middle guide piece, a base, a rubber core and a brush, wherein the base is provided with a concave cavity, a rotor and a brush are contained in the concave cavity, the brush is arranged on the rotor, a carbon sheet is arranged in a shell, and the carbon sheet is in contact fit with the brush; the rubber core is provided with two hook bodies, the base is provided with a middle hole, and the two hook bodies are buckled on the outer side of the base after elastically penetrating through the middle hole of the base. When the rubber core rotates in the concave cavity of the base, the electric brush brushes on one side of the carbon sheet to change the resistance value of the carbon sheet, so that the potentiometer outputs a linear output signal.

In the process of assembling the potentiometer, a potentiometer assembling device is required to be used for sequentially assembling a plurality of components of the potentiometer, and in the assembling process, the position and the angle of each component are required to be kept unchanged, however, after the rubber core (namely the rotor) in the patent 201220459499.9 is installed in the cavity of the base, the rubber core can freely rotate without being stopped, the position and the angle of the rubber core are changed, the assembling of the potentiometer assembling device is affected, and the problem of poor assembling of the potentiometer is easily caused. Furthermore, the glue core (i.e. rotor) of the potentiometer is required to maintain a set position and angle during the mounting of the potentiometer onto an external rotary output device (e.g. a rocker potentiometer) by mechanical means, and therefore the free-spinning glue core (i.e. rotor) in the above-mentioned patent also affects the mounting process of the potentiometer and the external rotary output device.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is not enough to above-mentioned prior art, provide one kind and can lock the rotor in the equipment process, and can make the rotatory potentiometre of rotor after the equipment again.

In order to solve the technical problem, the utility model discloses technical scheme is: a potentiometer comprises a shell, a rotor, an electric brush and a carbon sheet, wherein a concave cavity is formed in the left side of the shell, the rotor and the electric brush are contained in the concave cavity, the electric brush is installed on the rotor, the carbon sheet is installed in the shell, and the carbon sheet is in contact fit with the electric brush; the shell is provided with a first middle hole which is communicated from left to right, a stepped groove is circumferentially arranged at the right end of the first middle hole, and at least one notch is formed in the bottom of the stepped groove; the carbon sheet is provided with a second middle hole which is communicated left and right, and the second middle hole corresponds to the first middle hole; the rotor is provided with a rotating shaft, the rotating shaft movably penetrates through the second middle hole and the first middle hole from left to right, and the right end of the rotating shaft is provided with at least one hook body; the hook body can block into the notch, makes the rotor can not rotate, or further passes the notch and then stretches to the right side of ladder groove, makes the rotor can rotate for the shell.

Preferably, the first middle hole and the second middle hole are circular holes respectively, and the stepped groove is an annular stepped groove; two notches are formed in the bottom of the stepped groove and are symmetrical with respect to the axis of the first middle hole, and two hook bodies corresponding to the notches are arranged on the rotating shaft of the rotor. The hook body is provided with a hook body contact surface which is in contact fit with the right side of the stepped groove.

Preferably, the brush includes the installation piece and connects a plurality of shell fragments on the installation piece, and a plurality of shell fragments turn right elasticity and lean on in the left side of carbon piece, the shell fragment is equipped with the arc structure, is equipped with the contact that contacts with the carbon piece on the arc structure. The right side of the rotor is provided with four first mounting columns, and the mounting sheet of the electric brush is provided with four first mounting holes which are matched with the first mounting columns in a mounting way; the carbon sheet and the shell are molded into an integral structure in the die, the lower end of the carbon sheet is connected with three metal pins, and the three metal pins respectively extend out of the shell downwards.

Preferably, the rotor is provided with a rectangular through hole for receiving external rotation output, and two long grooves parallel to the long sides of the rectangular through hole are formed in the directions of the two sides of the rectangular through hole. And a circle of convex ring protruding outwards is arranged on the left side of the rotor, and the convex ring surrounds the rectangular through hole and the elongated slot.

Preferably, three second mounting columns extending leftwards are arranged at four corners of the left side of the shell, and two mounting hooks extending leftwards are arranged in the middle of the left side of the shell.

Preferably, the potentiometer further comprises a metal cover plate, the metal cover plate is provided with three second mounting holes which are assembled with the second mounting columns, and a third middle hole is formed in the middle of the metal cover plate.

Preferably, the housing is a plastic housing, and the rotor is a plastic rotor.

The utility model discloses have two kinds of structures, one kind has the structure that does not have the sheet metal covering, another kind is the structure that has the sheet metal covering, and the beneficial effect of two kinds of structures is respectively as follows: (1) for structures without a metal cover sheet: in the assembling process of the utility model, because the electric brush has elasticity, when the rotor and the electric brush are accommodated in the cavity, the hook body of the rotating shaft of the rotor is just clamped into the notch of the stepped groove of the shell under the elastic action of the electric brush, so that the rotor can not rotate, and the position and the angle of the rotor in the cavity of the shell can not be changed, thereby the potentiometer assembling equipment can accurately complete the potentiometer assembling; when will the utility model discloses install the in-process on the outside output device that rotates (for example rocker potentiometer) to the installation, the rotor of potentiometre can remain the position and the angle of settlement throughout, only after accomplishing with outside output device (for example rocker potentiometer) equipment of rotating, outside output device's that rotates casing (for example metal casing) just can turn right and withstand the rotor, make the rotor overcome the elasticity of brush, elastic deformation takes place for the brush, and then stretch to the right side in ladder groove again after further turning right the notch that passes of the coupler body of the pivot of rotor, at this moment the rotor just can rotate for the shell. (2) for structures with metal cover sheets: in the assembling process of the utility model, because the electric brush has elasticity, when the rotor and the electric brush are accommodated in the cavity, the hook body of the rotating shaft of the rotor is just clamped into the notch of the stepped groove of the shell under the elastic action of the electric brush, so that the rotor can not rotate, and the position and the angle of the rotor in the cavity of the shell can not be changed, thereby the potentiometer assembling equipment can accurately complete the potentiometer assembling; and after the left side equipment sheet metal of potentiometre, the sheet metal can withstand the rotor and push to the right, and the rotor overcomes the elasticity of brush, and elastic deformation takes place for the brush, and then makes the coupler body of the pivot of rotor further to pass the notch and stretch to the right side in ladder groove again after turning right, makes the rotor rotate for the shell. Therefore, the utility model discloses can be in the equipment in-process locking rotor, and can make the rotor rotatory again after the equipment to can guarantee the accurate nature of equipment.

Drawings

Fig. 1 is an overall structural view of the first embodiment.

Fig. 2 is a second overall structure diagram of the first embodiment.

FIG. 3 is a longitudinal sectional view of the first embodiment.

FIG. 4 is a diagram of a first embodiment of a distributed architecture.

FIG. 5 is a second example of the structure of the first embodiment.

Fig. 6 is a third dispersed structure diagram of the first embodiment.

FIG. 7 is a diagram of a distribution structure according to the first embodiment.

Fig. 8 is an overall configuration diagram of the second embodiment.

Detailed Description

The structure and operation of the present invention will be described in detail with reference to the accompanying drawings.

In the description of the present invention, it should be understood that the terms "upper end", "lower end", "left side", "right side", "inner side", "outer side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and particularly based on the orientations or positional relationships shown in fig. 3. The foregoing terms are merely for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

Example one

As shown in fig. 1-7, this embodiment is a potentiometer, which includes a housing 1, a rotor 2, an electric brush 3 and a carbon sheet 4, where the carbon sheet 4 is a carbon film resistor sheet, a cavity 11 is formed on the left side of the housing 1, the rotor 2 and the electric brush 3 are accommodated in the cavity 11, the electric brush 3 is mounted on the rotor 2, the carbon sheet 4 is mounted in the housing 1, and the carbon sheet 4 is in contact fit with the electric brush 3; the shell 1 is provided with a first middle hole 12 which is through from left to right, a stepped groove 13 is circumferentially arranged at the right end of the first middle hole 12, and at least one notch 14 is formed at the bottom of the stepped groove 13; the carbon sheet 4 is provided with a second middle hole 41 which is penetrated left and right, and the second middle hole 41 corresponds to the first middle hole 12; the rotor 2 is provided with a rotating shaft 21, the rotating shaft 21 movably penetrates through the second middle hole 41 and the first middle hole 12 from left to right, and the right end of the rotating shaft 21 is provided with at least one hook body 22; the hook 22 can be snapped into the notch 14 to prevent the rotor 2 from rotating, or further pass through the notch 14 and then extend to the right of the stepped groove 13 to allow the rotor 2 to rotate relative to the housing 1.

In the assembly process of the utility model, because the brush 3 has elasticity, when the rotor 2 and the brush 3 are accommodated in the cavity 11, the hook 22 of the rotating shaft 21 of the rotor 2 is just clamped into the notch 14 of the stepped groove 13 of the shell 1 under the elastic action of the brush 3, so that the rotor 2 can not rotate, and the position and the angle of the rotor 2 in the cavity 11 of the shell 1 can not be changed, thereby the potentiometer assembly equipment can accurately complete the potentiometer assembly; when the present invention is installed on an external rotation output device (e.g. a rocker potentiometer), the external rotation output device can be referred to as chinese patent 202122591184.1, the rotor 2 of the potentiometer can always maintain a set position and angle, only after the external rotation output device (e.g. the rocker potentiometer) is assembled, the housing (e.g. the metal housing) of the external rotation output device will right prop against the rotor 2, so that the rotor 2 overcomes the elastic force of the brush, the brush 3 elastically deforms, and then the hook 22 of the rotating shaft 21 of the rotor 2 further passes through the notch 14 to the right and then extends to the right side of the stepped groove 13, and then the rotor 2 can rotate relative to the housing 1. Therefore, the utility model discloses can be in assembling process locking rotor 2, and can make rotor 2 rotatory again after the equipment to can guarantee the accurate nature of equipment.

As shown in fig. 1 to 7, the first central hole 12 and the second central hole 41 are circular holes, and the stepped groove 13 is an annular stepped groove; two notches 14 are formed in the bottom of the stepped groove 13, the two notches 14 are symmetrical to each other about the axis of the first middle hole 12, and two hook bodies 22 corresponding to the notches 14 are arranged on a rotating shaft 21 of the rotor 2. The hook body 22 is provided with a hook body contact surface 221 which is in contact fit with the right side of the stepped groove 13.

As shown in fig. 1-7, the electric brush 3 includes a mounting plate 31 and a plurality of spring pieces 32 connected to the mounting plate 31, the plurality of spring pieces 32 elastically abut against the left side of the carbon sheet 4 toward the right, the spring pieces 32 are provided with arc structures 33, and the arc structures 33 are provided with contacts 34 contacting with the carbon sheet 4. Four first mounting columns 23 are arranged on the right side of the rotor 2, and four first mounting holes 35 which are matched with the first mounting columns 23 in an assembling way are formed in mounting pieces of the electric brush 3; carbon piece 4 and shell 1 are as an organic whole structure in the intramode shaping, and the lower extreme of carbon piece 4 is connected with three metal pin 42, and three metal pin 42 down stretches out shell 1 respectively.

As shown in fig. 1, 5 and 7, the rotor 2 is provided with a rectangular through hole 24 for receiving an external rotation output, and two long grooves 25 parallel to the long sides of the rectangular through hole 24 are formed in both side directions of the rectangular through hole 24. Due to the elongated slot 25, the two long sides of the rectangular through hole 24 can be deformed properly toward the elongated slot 25, and when the rotating rod of the external rotation output device is inserted into the rectangular through hole 24, interference fit can be formed with the rectangular through hole 24.

As shown in fig. 2, 3, 5 and 7, a ring of outward protruding beads 26 is disposed on the left side of the rotor 2, and the beads 26 surround the rectangular through hole 24 and the elongated slot 25. When the outside rotates output device's iron-clad with the utility model discloses during the potentiometre equipment, protruding circle 26 can reduce the frictional force with the iron-clad, makes rotor 2 change in the rotation.

As shown in fig. 2, fig. 3, fig. 5 and fig. 7, three second mounting posts 15 extending to the left are disposed at four corners of the left side of the housing 1, and two mounting hooks 16 extending to the left are disposed at the middle of the left side of the housing 1. Therefore, the potentiometer can be stably installed on the iron shell of the external rotation output device.

As a preferred embodiment of the present invention, the housing 1 is a plastic housing, and the rotor 2 is a plastic rotor.

Example two

As shown in fig. 8, for the potentiometer with another structure of the present invention, compared with the potentiometer according to the first embodiment, the potentiometer further comprises a metal cover 5, the metal cover 5 is provided with three second mounting holes 51 assembled with the second mounting posts 15, and a third middle hole 52 is formed in the middle of the metal cover 5.

Aiming at the structure with the metal cover plate 5, in the assembly process of the potentiometer, because the electric brush 3 has elasticity, when the rotor 2 and the electric brush 3 are accommodated in the cavity 11, under the action of the elasticity of the electric brush 3, the hook body 22 of the rotating shaft 21 of the rotor 2 is just clamped into the notch 14 of the stepped groove 13 of the shell 1, so that the rotor 2 cannot rotate, and the position and the angle of the rotor 2 in the cavity 11 of the shell 1 cannot be changed, so that the potentiometer assembly equipment can accurately complete the potentiometer assembly; and after the left side equipment sheet metal 5 of potentiometre, sheet metal 5 can push up rotor 2 and push to the right, and rotor 2 overcomes brush 3's elasticity, and brush 3 takes place elastic deformation, and then makes rotor 2's pivot 21's coupler body 22 further pass the notch 14 and stretch to the right side of ladder groove 3 again to the right side, makes rotor 2 can rotate for shell 1. Therefore, the utility model discloses can be in assembling process locking rotor 2, and can make rotor 2 rotatory again after the equipment to can guarantee the accurate nature of equipment.

The above, only the preferred embodiment of the present invention, all the slight modifications, equivalent changes and modifications made to the above embodiment by the technical solution of the present invention all belong to the scope of the technical solution of the present invention.

Claims

1. A potentiometer, comprising: the carbon sheet is arranged in the shell, and the carbon sheet is in contact fit with the electric brush; the shell is provided with a first middle hole which is communicated from left to right, a stepped groove is circumferentially arranged at the right end of the first middle hole, and at least one notch is formed in the bottom of the stepped groove; the carbon sheet is provided with a second middle hole which is communicated left and right, and the second middle hole corresponds to the first middle hole; the rotor is provided with a rotating shaft, the rotating shaft movably penetrates through the second middle hole and the first middle hole from left to right, and the right end of the rotating shaft is provided with at least one hook body; the hook body can block into the notch, makes the rotor can not rotate, or further passes the notch and then stretches to the right side of ladder groove, makes the rotor can rotate for the shell.

2. A potentiometer according to claim 1, wherein: the first middle hole and the second middle hole are circular holes respectively, and the stepped groove is an annular stepped groove; two notches are formed in the bottom of the stepped groove and are symmetrical with respect to the axis of the first middle hole, and two hook bodies corresponding to the notches are arranged on the rotating shaft of the rotor.

3. A potentiometer according to claim 2, wherein: the hook body is provided with a hook body contact surface which is in contact fit with the right side of the stepped groove.

4. A potentiometer according to claim 1, wherein: the brush includes the installation piece and connects a plurality of shell fragments on the installation piece, and a plurality of shell fragments turn right elasticity and lean on in the left side of carbon piece, the shell fragment is equipped with the arc structure, and the arc is structural to be equipped with the contact that contacts with the carbon piece.

5. A potentiometer according to claim 4, wherein: the right side of the rotor is provided with four first mounting columns, and the mounting sheet of the electric brush is provided with four first mounting holes which are matched with the first mounting columns in a mounting way; the carbon sheet and the shell are molded into an integral structure in the die, the lower end of the carbon sheet is connected with three metal pins, and the three metal pins respectively extend out of the shell downwards.

6. A potentiometer according to claim 1, wherein: the rotor is provided with a rectangular through hole for receiving external rotation output, and two long grooves parallel to the long edges of the rectangular through hole are formed in the directions of two sides of the rectangular through hole.

7. A potentiometer according to claim 6, wherein: and a circle of convex ring protruding outwards is arranged on the left side of the rotor and surrounds the rectangular through hole and the elongated slot.

8. A potentiometer according to claim 1, wherein: the left side four corners position of shell is equipped with three second erection columns that stretch out to the left, and the left side middle part of shell is equipped with two installation pothooks that stretch out to the left.

9. A potentiometer according to claim 8, wherein: the metal cover plate is provided with three second mounting holes which are assembled with the second mounting columns, and a third middle hole is formed in the middle of the metal cover plate.

10. A potentiometer according to any of claims 1-9, wherein: the shell is a plastic shell, and the rotor is a plastic rotor.