CN103971873A

CN103971873A - Potentiometer

Info

Publication number: CN103971873A
Application number: CN201410233189.9A
Authority: CN
Inventors: 李文武
Original assignee: KUNSHAN FAVORSTAR ELECTRONICS Co Ltd
Current assignee: KUNSHAN FAVORSTAR ELECTRONICS Co Ltd
Priority date: 2014-05-29
Filing date: 2014-05-29
Publication date: 2014-08-06

Abstract

The invention discloses a potentiometer. The potentiometer comprises a resistive element, an insulation base supporting the resistive element, an electric brush and a rotating handle driving the electric brush to rotate, wherein the resistive element is circular-fan-shaped, a first limiting baffle block and a second limiting baffle block are respectively arranged at two end parts of the resistive element, the electric brush and the rotating handle are installed at the circle center of the resistive element, the section of the electric brush is step-shaped; the thickness of the part, close to the resistive element, of the electric brush is greater than the thickness of part, close to the rotating shaft, of the electric brush; a plurality of raised adjusting gear blocks are arranged between the first limiting baffle block and the second limiting baffle block along the arc-shaped circumferential surface of the insulation base, and a positioning groove positioned above the raised gear adjusting blocks is formed in the rotating handle. The rotating handle drives the electric brush to rotate to adjust the value of resistance, so that unnecessary friction during rotating process of the electric brush is effectively reduced, the raised adjusting gear blocks are used for adjusting and controlling gears, and the second rotating shaft can move up and down relative to the first rotating shaft, so that gear locking and adjusting is realized.

Description

Potentiometer

Technical field

The present invention relates to a kind of potentiometer, be specifically related to the potentiometer of a kind of abrasionproof, anti-slide piece.

Background technology

Potentiometer is to have the resistive element that three exits, resistance can regulate by certain Changing Pattern.Potentiometer conventionally by resistive element and movably brush form.In the time that brush moves along resistive element, obtain the resistance value or the voltage that become certain relation with displacement at output.Brush, in mobile process, and certainly exists friction between resistive element and peripheral components, and friction easily damages potentiometer for a long time, reduce its useful life, and potentiometer is after adjusting puts in place, often cannot be fixed on a certain gear, is prone to misoperation in use procedure.

Summary of the invention

For solving the deficiencies in the prior art, the object of the present invention is to provide the potentiometer of a kind of abrasionproof, anti-slide piece.

In order to realize above-mentioned target, the present invention adopts following technical scheme:

Potentiometer, comprise insulator foot, the brush of resistive element, supporting resistive element and the turning handle that drives brush to rotate, described resistive element is that circle ring sector and two ends are respectively equipped with the first positive stop and the second positive stop, and described brush and turning handle are installed on the circle centre position of resistive element; The cross section of described brush is step, is greater than the thickness near rotating shaft place near the thickness at resistive element place; Between described the first positive stop and the second positive stop, be provided with the regulation stall piece of multiple projections along the circular arc side face of insulator foot, on described turning handle, be formed with the location notch that is positioned at regulation stall piece top.

Aforementioned dielectric base is made up of pottery.

Aforementioned the first positive stop and the second positive stop are made up of insulating material.

Differential seat angle between aforementioned two adjacent regulation stall pieces is 5 °.

Aforementioned brush is connected in the first rotating shaft, and described turning handle is connected in the second rotating shaft, and the second shaft set is in the first rotating shaft and both interferences.

Aforementioned the second rotating shaft can move up and down with respect to the first rotating shaft, thereby makes location notch and regulation stall piece coordinate, separate between two states and switch.

Usefulness of the present invention is: potentiometer of the present invention, and drive brush to rotate by turning handle and realize resistance adjusting, be step by brush designs, can effectively reduce the inessential friction in brush rotation process; By protruding regulation stall piece, gear is carried out to regulation and control in addition, and second rotating shaft can move up and down with respect to the first rotating shaft, while moving downward, location notch snaps in regulation stall piece wherein, prevent slide piece, while moving upward, thereby separating with regulation stall piece, location notch realizes gear adjusting.

Brief description of the drawings

Fig. 1 is the structural representation of a preferred embodiment of potentiometer of the present invention;

Fig. 2 is the cross section structure schematic diagram of Fig. 1 center brush.

The implication of Reference numeral in figure: 1, resistive element, 2, insulator foot, 3, brush, 4, turning handle, 41, location notch, 5, the first positive stop, 6, the second positive stop, 7, regulation stall piece, 8, the first rotating shaft, 9, the second rotating shaft.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is done to concrete introduction.

Referring to Fig. 1, potentiometer of the present invention, comprise insulator foot 2, the brush 3 of resistive element 1, supporting resistive element 1 and the turning handle 4 that drives brush 3 to rotate, wherein, insulator foot 2 is preferably made up of pottery, resistive element 1 is circle ring sector, and two ends are respectively equipped with the first positive stop 5 and the second positive stop 6 rotational angle with restriction turning handle 4, and preferably the first positive stop 5 and the second positive stop 6 are made up of insulating material.The stiff end of brush 3 and turning handle 4 is all installed on the circle centre position of resistive element 1, and the free end of turning handle 4 can drive the free end of brush 3 to rotate while rotation, regulate thereby realize resistance.In order to reduce unnecessary friction, as shown in Figure 2, the cross section of brush 3 is step, be greater than the thickness near rotating shaft place near the thickness at resistive element 1 place, so,, in regulator potentiometer, substantially just only has necessity friction between brush 3 and resistive element 1, inessential friction between brush 3 and insulator foot 2 has existed hardly, can extend the useful life of potentiometer.

Further, as shown in Figure 1, between the first positive stop 5 and the second positive stop 6, be provided with the regulation stall piece 7 of multiple projections along the circular arc side face of insulator foot 2, preferably, differential seat angle between two adjacent regulation stall pieces 7 is 5 °, on turning handle 4, be formed with the location notch 41 being positioned at above regulation stall piece 7 simultaneously, from location notch 41, can determine intuitively and regulating and controlling gear, improved operability.

As a kind of concrete structure of the present invention, be provided with the first rotating shaft 8 and the second rotating shaft 9 that interfere with each other at the home position of resistive element 1, wherein, brush 3 is connected in the first rotating shaft 8, turning handle 4 is connected in the second rotating shaft 9, because the first rotating shaft 8 and the second rotating shaft 9 are interfered mutually, so, turning handle 4 must drive the brush 3 being connected with the first rotating shaft 8 to rotate while driving the second rotating shaft 9 to rotate, particularly, can realize mutual interference each other by the spline tooth cooperatively interacting in the first rotating shaft 8 inwalls and the second rotating shaft 9 outer wall settings.

Further, the second rotating shaft 9 can move up and down with respect to the first rotating shaft 8, thereby make location notch 41 and regulation stall piece 7 coordinate, separate between two states and switch, while moving downward, location notch 41 snaps in regulation stall piece 7 wherein, prevent slide piece, while moving upward, realize gear adjusting thereby location notch 41 separates with regulation stall piece 7.

More than show and described general principle of the present invention, principal character and advantage.The technical staff of the industry should understand, and above-described embodiment does not limit the present invention in any form, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, all drops in protection scope of the present invention.

Claims

1. potentiometer, it is characterized in that, comprise insulator foot, the brush of resistive element, supporting resistive element and the turning handle that drives brush to rotate, described resistive element is that circle ring sector and two ends are respectively equipped with the first positive stop and the second positive stop, and described brush and turning handle are installed on the circle centre position of resistive element; The cross section of described brush is step, is greater than the thickness near rotating shaft place near the thickness at resistive element place; Between described the first positive stop and the second positive stop, be provided with the regulation stall piece of multiple projections along the circular arc side face of insulator foot, on described turning handle, be formed with the location notch that is positioned at regulation stall piece top.

2. potentiometer according to claim 1, is characterized in that, described insulator foot is made up of pottery.

3. potentiometer according to claim 1, is characterized in that, described the first positive stop and the second positive stop are made up of insulating material.

4. potentiometer according to claim 1, is characterized in that, the differential seat angle between described two adjacent regulation stall pieces is 5 °.

5. according to the potentiometer described in claim 1-4 any one, it is characterized in that, described brush is connected in the first rotating shaft, and described turning handle is connected in the second rotating shaft, and the second shaft set is in the first rotating shaft and both interferences.

6. potentiometer according to claim 5, is characterized in that, described the second rotating shaft can move up and down with respect to the first rotating shaft, thereby makes location notch and regulation stall piece coordinate, separate between two states and switch.