An adjustable potentiometer

Abstract

The utility model belongs to potentiometer technical field discloses a kind of adjustable potentiometers, including potentiometer main body, further include: rotary adjustment module, rotary adjustment module includes knob and segmented resistance body and adjusting disc, adjusting disc is installed on potentiometer main body, and it is located just below knob;Mounting seat, mounting seat is installed on the bottom of potentiometer main body, mounting seat is equipped with fixed leg and fixed hole, segmented resistance body includes at least 6 independent copper alloy resistance ring, and each copper alloy resistance ring is separated by insulating gap, and form stepped resistance value change, the resistance value tolerance of each copper alloy resistance ring≤±1%.The utility model replaces traditional carbon film / winding resistance by segmented copper alloy resistance ring, in combination with the design of precision insulating gap and resistance value tolerance≤±1%, can solve the problem of fine adjustment drift and material wear, and can ensure the consistency of adjustment, and because copper alloy wear resistance, to extend the service life of potentiometer.

Description

Technical Field

[0001] This utility model relates to the field of potentiometer technology, and in particular to an adjustable potentiometer. Background Technology

[0002] An adjustable potentiometer is an electronic component with three terminals that can mechanically adjust its resistance value. Its core function is to provide a variable resistance or voltage division ratio. It is commonly used in circuits for signal conditioning, volume control, brightness adjustment, and other applications.

[0003] Traditional potentiometers mostly use carbon film or wire-wound resistors, which have the following problems: 1) Insufficient adjustment accuracy: Continuous resistors are easily affected by contact wear during fine adjustment, resulting in resistance drift; 2) Limited lifespan: Carbon film materials are prone to scratches under frequent adjustments, reducing their lifespan. Therefore, we propose an adjustable potentiometer. Summary of the Invention

[0004] In view of the problems of insufficient adjustment accuracy and limited lifespan of the existing potentiometers, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: An adjustable potentiometer includes a potentiometer body and further includes: A rotary adjustment module includes a knob, a segmented resistive element, and an adjustment dial connected coaxially. The adjustment dial is mounted on the potentiometer body and located directly below the knob to ensure adjustment accuracy and provide an intuitive physical positioning reference, thus avoiding misoperation. The mounting base is installed on the bottom of the potentiometer body. The mounting base is provided with fixing feet and fixing holes for fixing the potentiometer body, so as to enhance the overall stability, prevent the potentiometer body from shifting in the vibration environment, and improve the reliability of the equipment.

[0006] As a technical solution of the adjustable potentiometer described in this utility model, the surface of the knob is provided with an indicator protrusion for marking the current adjustment position and anti-slip textures distributed in a circumferential array, so as to clearly identify the current resistance value level, while avoiding slippage, improving adjustment efficiency and human-computer interaction experience.

[0007] As a technical solution of the adjustable potentiometer described in this utility model, the segmented resistive element includes at least 6 independent copper alloy resistive rings, and each copper alloy resistive ring is separated by an insulating gap, forming a stepped resistance change, so as to solve the resistance drift problem caused by contact wear of traditional continuous resistive elements.

[0008] As a technical solution for an adjustable potentiometer according to this utility model, the insulation gap width is 0.1–0.5 mm, and the resistance tolerance of each copper alloy resistor ring is ≤ ±1%, so as to avoid arc damage and extend service life.

[0009] As a technical solution of the adjustable potentiometer described in this utility model, the adjustment dial surface is engraved with adjustment scale, and the scale value of the adjustment scale corresponds one-to-one with the resistance value step of the segmented resistor, so as to achieve precise adjustment and reduce the debugging complexity.

[0010] As a technical solution of the adjustable potentiometer described in this utility model, the mounting base is provided with a relief groove for accommodating the wiring terminals on the potentiometer body, so as to avoid squeezing the wires during installation, ensure electrical safety and simplify the assembly process.

[0011] As a technical solution of the adjustable potentiometer described in this utility model, the knob, the adjustment dial and the mounting base are all integrally injection molded from flame-retardant engineering plastics. The integral injection molding process ensures structural strength, enhances safety with flame-retardant properties, and reduces overall weight and production costs.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects: 1. This utility model replaces the traditional carbon film / wire-wound resistor with a segmented copper alloy resistor ring, and combined with a precision insulation gap and a resistance tolerance of ≤±1%, it can solve the problems of fine-tuning drift and material wear, and ensure the consistency of adjustment. At the same time, due to the wear resistance of copper alloy, it can extend the service life of the potentiometer.

[0013] This invention, by employing a scale and resistance linkage mechanism in conjunction with an anti-slip indicator knob, enables precise positioning during operation. Combined with a flame-retardant integrated molding structure and a mounting base fixing structure, it can physically protect the equipment from vibration and short-circuit risks, while also ensuring efficient operation and industrial-grade safety. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the main structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of this utility model from a bottom view.

[0016] Figure 3 This is a schematic diagram of the exploded structure of this utility model.

[0017] Explanation of reference numerals in the attached figures: In the diagram: 1. Potentiometer body; 2. Knob; 201. Indicator protrusion; 202. Anti-slip texture; 3. Adjustment dial; 301. Adjustment scale; 4. Mounting base; 401. Leaning groove; 402. Fixing foot; 403. Fixing hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0020] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0021] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0022] Reference Figures 1-3 An adjustable potentiometer is provided, which includes a potentiometer body 1 (the potentiometer body 1 is prior art and will not be described in detail here), and also includes: The rotary adjustment module includes a knob 2 and a segmented resistive element connected coaxially, as well as an adjustment disk 3. The adjustment disk 3 is mounted on the potentiometer body 1 and is located directly below the knob 2. Mounting base 4 is installed at the bottom of potentiometer body 1. Mounting base 4 is provided with fixing feet 402 and fixing holes 403 for fixing potentiometer body 1. In application, the coaxial design of knob 2 and segmented resistor ensures adjustment accuracy. Adjustment dial 3 is located below knob 2, providing intuitive physical positioning reference and avoiding misoperation. At the same time, the design of mounting base 4, fixing feet 402 and fixing holes 403 enhance overall stability, prevent potentiometer body 1 from shifting in vibration environment, and improve equipment reliability.

[0023] Reference Figures 1-3 The surface of knob 2 is provided with an indicator protrusion 201 (red) for indicating the current adjustment position and anti-slip texture 202 distributed in a circumferential array. In application, the indicator protrusion 201 clearly indicates the current resistance level, and the circumferential anti-slip texture 202 increases the operating friction, avoids slipping, and improves adjustment efficiency and human-computer interaction experience.

[0024] Reference Figures 1-3 The segmented resistor element comprises at least six independent copper alloy resistance rings, separated by insulating gaps to create a stepped resistance variation. The insulation gap width is 0.1–0.5 mm, and the resistance tolerance of each copper alloy resistance ring is ≤ ±1%. The resistance values ​​increase in steps of 10kΩ, 20kΩ, 30kΩ, 40kΩ, 50kΩ, and 60kΩ. The surface of the resistance rings is nickel-plated for oxidation prevention, and conductive silver paste contacts are welded to the bottom. In application, the at least six independent resistance rings form a stepped resistance variation (tolerance ≤ ±1%) to solve the resistance drift problem caused by contact wear in traditional continuous resistor elements. At the same time, the wear resistance of copper alloy material is superior to that of carbon film, and the insulation gap design (0.1–0.5 mm) can avoid arc damage and extend service life.

[0025] Reference Figures 1-3 The adjustment dial 3 has an adjustment scale 301 engraved on its surface, and the scale value of the adjustment scale 301 corresponds one-to-one with the resistance value step of the segmented resistor. In application, the adjustment scale 301 is designed to correspond to the resistance value. By matching the scale value with the resistance step, precise adjustment can be achieved and the debugging complexity can be reduced.

[0026] Reference Figure 2 and Figure 3 The mounting base 4 has a relief groove 401 for accommodating the terminals on the potentiometer body 1. In application, the design of the relief groove 401 can reserve space for the terminals, avoid squeezing the wires during installation, ensure electrical safety and simplify the assembly process.

[0027] Reference Figures 1-3 The knob 2, adjustment dial 3, and mounting base 4 are all made of flame-retardant engineering plastic through one-piece injection molding. In application, the one-piece injection molding process ensures structural strength, enhances safety with flame-retardant properties, and reduces overall weight and production costs.

[0028] The working principle of this utility model is as follows: Installation and fixing: The potentiometer body 1 is locked to the device panel by passing an M3 screw through the fixing hole 403; Electrical connection: Connect the power cord / signal line to the terminal block of potentiometer body 1, and ensure that the line is fully embedded in the relief groove 401 without any exposed or squeezed parts; Adjustment operation: Positioning the initial gear: Rotate knob 2 to align the indicator protrusion 201 with the initial scale of adjustment dial 3; Stepped adjustment: Rotate knob 2 clockwise and the indicator protrusion 201 will point to the next scale, and the resistance value will change step by step from 10kΩ to 60kΩ, and the corresponding signal will be output in real time. Fine-tuning confirmation: If you need to return to the low resistance setting, simply rotate counterclockwise to the target mark.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An adjustable potentiometer, comprising a potentiometer body (1), characterized in that: Also includes: The rotary adjustment module includes a knob (2) and a segmented resistor connected coaxially, and an adjustment disk (3). The adjustment disk (3) is mounted on the potentiometer body (1) and located directly below the knob (2). Mounting base (4), which is installed on the bottom of the potentiometer body (1), and the mounting base (4) is provided with fixing feet (402) and fixing holes (403) for fixing the potentiometer body (1).

2. The adjustable potentiometer according to claim 1, characterized in that: The surface of the knob (2) is provided with an indicator protrusion (201) for indicating the current adjustment position and anti-slip texture (202) distributed in a circumferential array.

3. The adjustable potentiometer according to claim 1, characterized in that: The segmented resistor comprises at least six independent copper alloy resistor rings, which are separated by insulating gaps, forming a stepped resistance variation.

4. The adjustable potentiometer according to claim 3, characterized in that: The insulation gap width is 0.1–0.5 mm, and the resistance tolerance of each copper alloy resistor ring is ≤ ±1%.

5. The adjustable potentiometer according to claim 1, characterized in that: The adjustment dial (3) has an adjustment scale (301) engraved on its surface, and the scale value of the adjustment scale (301) corresponds one-to-one with the resistance step of the segmented resistor.

6. The adjustable potentiometer according to claim 1, characterized in that: The mounting base (4) has a relief groove (401) for accommodating the wiring terminals on the potentiometer body (1).

7. The adjustable potentiometer according to any one of claims 1-6, characterized in that: The knob (2), the adjustment disc (3), and the mounting base (4) are all integrally injection molded from flame-retardant engineering plastics.

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