CN214588264U

CN214588264U - Anti-deflection rocker potentiometer

Info

Publication number: CN214588264U
Application number: CN202120841615.2U
Authority: CN
Inventors: 刘晟睿
Original assignee: Favor Electronics Dongguan Co ltd
Current assignee: Favor Electronics Dongguan Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-11-02
Anticipated expiration: 2031-04-22

Abstract

The utility model provides a deflection-proof rocker potentiometer, which comprises a base, a face cover and a rocker, wherein a circuit board, a heat dissipation plate and a bottom plate are sequentially arranged below the base, and a first electric brush plate and a second electric brush plate are arranged between the circuit board and the base; a first limiting convex ring is fixed on the base, an annular limiting groove is formed in the first limiting convex ring, and a scraping-proof ring is arranged in the limiting groove; the bottom of the heat dissipation plate is fixed with a heat dissipation convex strip, and a heat dissipation abdicating hole is formed in the bottom plate; be equipped with the first guide way of rectangle in the first brush board, be equipped with the second guide way of rectangle in the second brush board, the bottom mounting of rocker has the square post of preventing partially, prevents during the post is worn to locate first guide way and second guide way partially, and the bottom of first brush board is connected with first ball, and the bottom of second brush board is connected with the second ball. The utility model can effectively avoid the rocker from deflecting in the adjusting process, and the user feels good in use; prevent scraping circle, ball and can effectively avoid wearing and tearing, the regulation action is smooth and easy.

Description

Anti-deflection rocker potentiometer

Technical Field

The utility model relates to a potentiometre specifically discloses a rocker potentiometre of preventing deflecting.

Background

A potentiometer is a resistive element with three terminals and a resistance value adjustable according to a certain variation law, and is generally composed of a resistive body and a movable brush, and when the brush moves along the resistive body, a resistance value or a voltage in a certain relation to a displacement is obtained at an output terminal. Potentiometers function in a circuit to obtain an output voltage that has a relationship to an input voltage and are therefore referred to as potentiometers.

The rocker potentiometer mainly comprises a rocker and brush modules which are arranged in a crossed mode, and output signals are adjusted by shifting the rocker, so that the regulation and control requirements are met. Among the prior art, the regulation of electric potential is realized mainly through the displacement variable on the horizontal plane to the rocker potentiometre, and when stirring the rocker, the rocker deflects easily, though deflect can not direct influence the voltage of output, but the deflection can lead to the user to cause the wrong judgement to the stirring force that the hand was applyed to cause user's anticipated regulating value and actual regulating value to be formed with great error, user's use is felt poor.

SUMMERY OF THE UTILITY MODEL

Therefore, the rocker potentiometer capable of preventing deflection is needed to be provided for solving the problems in the prior art, the deflection of the rocker can be effectively avoided in the adjusting process, the use hand feeling of a user is good, and the heat dissipation performance of the overall structure is good.

In order to solve the prior art problem, the utility model discloses a deflection-proof rocker potentiometer, which comprises a base, a face cover and a rocker, wherein a circuit board, a heat dissipation plate and a bottom plate are sequentially arranged below the base;

the base is provided with a first abdicating hole, the base is fixed with a first limiting convex ring surrounding the first abdicating hole, the surface cover is provided with a second abdicating hole, the surface cover is fixed with a second limiting convex ring surrounding the second abdicating hole, the rocker passes through the first abdicating hole and the second abdicating hole, the rocker is fixed with a disc outside, the disc is positioned between the first limiting convex ring and the second limiting convex ring, a circular ring spring sleeve is arranged outside the first limiting convex ring, the second limiting convex ring and the disc, the first limiting convex ring is provided with a circular limiting groove, the limiting groove is provided with a scraping-proof ring, the cross-sectional shape of the scraping-proof ring is circular, and the cross-sectional circular diameter of the scraping-proof ring is larger than the depth of the limiting groove; a positioning column is fixed at the bottom of the base, a first positioning hole is formed in the circuit board, a second positioning hole is formed in the heat dissipation plate, a third positioning hole is formed in the bottom plate, the positioning column penetrates through the first positioning hole, the second positioning hole and the third positioning hole, a heat dissipation convex strip is fixed at the bottom of the heat dissipation plate, a heat dissipation abdicating hole is formed in the bottom plate, and the heat dissipation convex strip is located in the heat dissipation abdicating hole;

be equipped with the first guide way of rectangle in the first brush board, be equipped with the second guide way of rectangle in the second brush board, the bottom mounting of rocker has the square post of preventing partially, prevent during the post is worn to locate first guide way and second guide way partially, the bottom of base is equipped with first spout and second spout, the top of first brush board is fixed with the first slider of sliding connection in first spout, the top of second brush board is fixed with the second slider of sliding connection in the second spout, the bottom roll connection of first brush board has first ball, the bottom roll connection of second brush board has the second ball.

Furthermore, the scraping-proof ring is a ceramic ring.

Further, a rod cap is connected to the top of the rocker.

Furthermore, a third yielding hole is formed in the circuit board, and the anti-deviation column penetrates through the third yielding hole and abuts against the heat dissipation plate.

Furthermore, the heating panel is the ceramic plate, and the inner wall of second locating hole covers there is the buffer layer.

Further, the buffer layer is heat conduction silica gel layer.

The utility model has the advantages that: the utility model discloses a deflection-proof rocker potentiometer, which is provided with a square deflection-proof column matched with a rectangular guide groove, can effectively avoid relative rotation between a rocker and a brush plate, can effectively avoid deflection of the rocker in the adjusting process, can effectively ensure that the expected adjusting value of a user is close to the actual adjusting value, and has good use hand feeling and accurate adjusting effect; the scraping-proof ring can effectively reduce the friction between the disc and the first limiting convex ring, the ball can effectively prevent the electric brush plate from wearing the circuit board, the service life of the whole structure is long, and the adjusting action is smooth; in addition, the heat dissipation plate and the heat dissipation convex strips can effectively improve the heat dissipation performance of the circuit board, the influence on the output voltage caused by overhigh temperature can be effectively avoided, and the reliability of potential adjustment is high.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of the split structure of the present invention.

Fig. 3 is a schematic view of a split structure at another viewing angle of the present invention.

The reference signs are: the anti-scraping device comprises a base 10, a first abdicating hole 11, a first limiting convex ring 12, a limiting groove 121, an anti-scraping ring 13, a positioning column 14, a first sliding groove 15, a second sliding groove 16, a face cover 20, a second abdicating hole 21, a second limiting convex ring 22, a rocker 30, a disc 31, an anti-deviation column 32, a rod cap 33, a circuit board 40, a first positioning hole 41, a third abdicating hole 42, a heat dissipation plate 50, a second positioning hole 51, a buffer layer 511, a heat dissipation convex strip 52, a bottom plate 60, a third positioning hole 61, a heat dissipation abdicating hole 62, a circular ring spring 70, a first electric brush plate 80, a first guide groove 81, a first sliding block 82, a first rolling ball 83, a second electric brush plate 90, a second guide groove 91, a second sliding block 92 and a second rolling ball 93.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Refer to fig. 1 to 3.

The embodiment of the utility model discloses a rocker potentiometer of preventing deflecting, including base 10, face lid 20 and rocker 30, face lid 20 lock joint is on base 10, rocker 30 can move between face lid 20 and base 10, be equipped with circuit board 40, heating panel 50 and bottom plate 60 below base 10 in proper order, be formed with corresponding resistance circuit on the circuit board 40, bottom plate 60 lock joint is under base 10, be equipped with ring spring 70 between face lid 20 and base 10, be equipped with first brush board 80 and second brush board 90 between circuit board 40 and base 10;

a first abdicating hole 11 is arranged in the base 10, a first limit convex ring 12 surrounding the first abdicating hole 11 is fixed on the base 10, a second abdicating hole 21 is arranged in the face cover 20, a second limit convex ring 22 surrounding the second abdicating hole 21 is fixed under the face cover 20, the rocker 30 passes through the first abdicating hole 11 and the second abdicating hole 21, a disc 31 is fixed outside the rocker 30, preferably, the disc 31 and the rocker 30 are in an integrated structure, the disc 31 is positioned between the first limit convex ring 12 and the second limit convex ring 22, a ring-shaped spring 70 is sleeved outside the first limit convex ring 12, the second limit convex ring 22 and the disc 31, when the rocker 30 moves, the moving direction side of the ring-shaped spring 70 is hooked outside the disc 31, the other side of the ring-shaped spring 70 is hooked outside the first limit convex ring 12 and the second limit convex ring 22, thereby forming an elastic restoring force, and being capable of realizing reliable restoring action when the rocker 30 is pushed horizontally, the first limiting convex ring 12 is provided with an annular limiting groove 121, the limiting groove 121 is internally provided with an annular scraping-preventing ring 13, a plane perpendicular to the scraping-preventing ring 13 is taken as a cutting plane, the section of the scraping-preventing ring 13 is circular, and the diameter of the section of the scraping-preventing ring 13 is larger than the depth of the limiting groove 121, so that the scraping-preventing ring 13 can be ensured to form a good lubricating effect, the friction formed between the disc 31 and the first limiting convex ring 12 can be effectively reduced, and the service life of the whole structure can be effectively prolonged;

the bottom of the base 10 is fixed with a positioning column 14, the circuit board 40 is provided with a first positioning hole 41, the heat dissipation plate 50 is provided with a second positioning hole 51, the bottom plate 60 is provided with a third positioning hole 61, the positioning column 14 penetrates through the first positioning hole 41, the second positioning hole 51 and the third positioning hole 61, the stability of the structural positions among the base 10, the circuit board 40, the heat dissipation plate 50 and the bottom plate 60 can be effectively ensured, the bottom of the heat dissipation plate 50 is fixed with a heat dissipation convex strip 52, the bottom plate 60 is provided with a heat dissipation abdicating hole 62, and the heat dissipation convex strip 52 is positioned in the heat dissipation abdicating hole 62, so that the heat dissipation performance of the whole structure can be effectively improved, the resistance circuit in the circuit board 40 is prevented from influencing the magnitude of output voltage due to overhigh temperature, and the adjustment sensitivity can be effectively ensured;

the first brush board 80 is provided with a rectangular first guide groove 81, the second brush board 90 is provided with a rectangular second guide groove 91, the bottom end of the rocker 30 is fixed with a square deviation-preventing post 32, namely the deviation-preventing post 32 is a quadrangular prism, the deviation-preventing post 32 is arranged in the first guide groove 81 and the second guide groove 91 in a penetrating way, the rocker 30 can be effectively prevented from deviating and rotating in the adjusting process to influence the adjusting effect, the adjusting hand feeling is good, the sensitivity is high, the bottom of the base 10 is provided with a first sliding groove 15 and a second sliding groove 16 which are perpendicular to each other, the top of the first brush board 80 is fixed with a first sliding block 82 which is connected in the first sliding groove 15 in a sliding way, the top of the second brush board 90 is fixed with a second sliding block 92 which is connected in the second sliding groove 16 in a sliding way, the bottom of the first brush board 80 is connected with a first ball 83 in a rolling way, the bottom of the second brush board 90 is connected with a second ball 93 in a rolling way, preferably, the bottoms of the first brush board 80 and the second brush board 90 are provided with ball seats for installing balls, first ball 83 and second ball 93 can change sliding connection into roll connection, can effectively avoid circuit board 40 to be scraped the flower, can effectively prolong circuit board 40's life, can effectively improve the smooth and easy nature that rocker 30 adjusted simultaneously, and the bottom of first brush board 80 and second brush board 90 all sets up the electrically conductive shell fragment of sliding connection on the resistance circuit.

When the utility model works, the rocker 30 is pushed to drive the first electric brush board 80 and/or the second electric brush board 90 to move, so that a corresponding potential adjusting effect is formed on the circuit board 40, and reliable reset action can be realized after the rocker 30 is loosened due to the action of the annular spring 70; when the rocker 30 is pushed, the scraping-proof ring 13 with good lubricating performance can effectively reduce the abrasion between the disc 31 and the first limit convex ring 12; because the anti-deflection column 32 is of a square structure, and the first guide groove 81 and the second guide groove 91 are both of rectangular structures, the deflection generated when the rocker 30 is pushed can be effectively avoided, the reliability of potential adjustment can be effectively improved, the use experience of a user can be improved, and the adjustment hand feeling is good; when the first brush plate 80 and the second brush plate 90 slide, the first ball 83 and the second ball 93 can form rolling connection with the circuit board 40, so that the circuit board 40 is effectively prevented from being abraded, and the performance of the potentiometer of the rocker 30 can be effectively ensured; in addition, the heat dissipation plate 50 and the heat dissipation ribs 52 protruding from the bottom plate 60 can significantly improve the heat dissipation performance of the circuit board 40, effectively prevent the resistance lines in the circuit board 40 from affecting the output voltage due to the over-high temperature, and effectively ensure the reliability of the potential adjustment.

In this embodiment, the scratch-proof ring 13 is a circular ceramic ring, the ceramic has a low friction coefficient, and the friction between the disc 31 and the first limit convex ring 12 can be further reduced by matching with the circular cross-sectional shape.

In this embodiment, the top of the rocker 30 is connected with a rod cap 33 located above the face cover 20, and the use hand feeling of the user can be effectively improved through the rod cap 33.

In the embodiment, the circuit board 40 is provided with a third avoiding hole 42, the deviation-preventing column 32 passes through the third avoiding hole 42 and abuts against the heat dissipation plate 50, and the circuit board 40 can be prevented from being worn by the deviation-preventing column 32 through the third avoiding hole 42.

In this embodiment, the heat dissipation plate 50 is a ceramic plate, the inner wall of the second positioning hole 51 is covered with the buffer layer 511, and the buffer layer 511 can effectively prevent the positioning column 14 from rigidly colliding with the heat dissipation plate 50, so as to effectively improve the stability of the overall structure, and prevent the heat dissipation protruding strip 52 from violently colliding with the bottom plate 60 and being damaged when the heat dissipation plate vibrates.

Based on the above embodiment, the buffer layer 511 is a heat conductive silica gel layer, and the heat conductive silica gel has not only good elasticity but also good heat conductivity.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A deflection-preventing rocker potentiometer comprises a base (10), a face cover (20) and a rocker (30), and is characterized in that a circuit board (40), a heat dissipation plate (50) and a bottom plate (60) are sequentially arranged below the base (10), a circular ring-shaped spring (70) is arranged between the face cover (20) and the base (10), and a first electric brush plate (80) and a second electric brush plate (90) are arranged between the circuit board (40) and the base (10);

a first abdicating hole (11) is arranged in the base (10), a first limiting convex ring (12) surrounding the first abdicating hole (11) is fixed on the base (10), a second abdicating hole (21) is arranged in the face cover (20), a second limiting convex ring (22) surrounding the second abdicating hole (21) is fixed under the face cover (20), the rocker (30) passes through the first abdicating hole (11) and the second abdicating hole (21), a disc (31) is fixed outside the rocker (30), the disc (31) is positioned between the first limiting convex ring (12) and the second limiting convex ring (22), the annular spring (70) is sleeved outside the first limiting convex ring (12), the second limiting convex ring (22) and the disc (31), and a limiting groove (121) is arranged on the first limiting convex ring (12), a scraping prevention ring (13) is arranged in the limiting groove (121), the section of the scraping prevention ring (13) is circular, and the diameter of the circular section of the scraping prevention ring (13) is larger than the depth of the limiting groove (121);

a positioning column (14) is fixed at the bottom of the base (10), a first positioning hole (41) is formed in the circuit board (40), a second positioning hole (51) is formed in the heat dissipation plate (50), a third positioning hole (61) is formed in the bottom plate (60), the positioning column (14) penetrates through the first positioning hole (41), the second positioning hole (51) and the third positioning hole (61), a heat dissipation convex strip (52) is fixed at the bottom of the heat dissipation plate (50), a heat dissipation abdicating hole (62) is formed in the bottom plate (60), and the heat dissipation convex strip (52) is located in the heat dissipation abdicating hole (62);

a rectangular first guide groove (81) is arranged in the first brush plate (80), a rectangular second guide groove (91) is arranged in the second brush plate (90), a square anti-deviation column (32) is fixed at the bottom end of the rocker (30), the anti-deviation column (32) is arranged in the first guide groove (81) and the second guide groove (91) in a penetrating way, the bottom of the base (10) is provided with a first sliding chute (15) and a second sliding chute (16), a first sliding block (82) which is connected in a sliding way in the first sliding groove (15) is fixed at the top of the first brush plate (80), a second sliding block (92) which is connected in a sliding way in the second sliding groove (16) is fixed at the top of the second brush plate (90), the bottom of the first brush plate (80) is connected with a first ball (83) in a rolling way, the bottom of the second brush plate (90) is connected with a second ball (93) in a rolling way.

2. A yaw-proof rocker potentiometer according to claim 1, characterized in that the wiper ring (13) is a ceramic ring.

3. A yaw-proof rocker potentiometer according to claim 1, characterized in that a cap (33) is attached to the top of the rocker (30).

4. An anti-yaw rocker potentiometer according to claim 1, wherein the circuit board (40) has a third relief hole (42) therein, and the anti-yaw post (32) passes through the third relief hole (42) and abuts against the heat sink plate (50).

5. A yaw-proof rocker potentiometer according to claim 1, characterized in that the heat sink plate (50) is a ceramic plate and the inner walls of the second positioning holes (51) are covered with a buffer layer (511).

6. A yaw-proof rocker potentiometer according to claim 5, characterized in that the buffer layer (511) is a layer of thermally conductive silicone.