Automatic control potentiometer

Abstract

An automatic control potentiometer comprises: a support frame in which an insulating plate and a slide bar are arranged; the insulating plate is provided with at least two parallel resistor discs, and the resistor discs are electrically connected with electrodes; a sliding block is connected to the sliding rod in a sliding mode, and an electric brush abutting against the resistor disc is arranged on the sliding block; a motor is arranged outside the supporting frame, the output end of the motor is connected with the sliding block through a belt, and the motor is used for driving the sliding block to move along the sliding rod. And by realizing automatic adjustment, the adjustment precision, the reliability and the system integration degree are remarkably improved. Meanwhile, personal errors are reduced, the compatibility with an intelligent system is enhanced, and the application range of the system is expanded.

Description

Technical Field

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

[0002] A potentiometer is a variable resistor used to adjust the resistance value in a circuit, thereby controlling the flow of current or the distribution of voltage. It is commonly used to adjust signal strength and control functions such as volume, brightness, and speed in devices. Potentiometers are widely used in electronic equipment, audio equipment, control panels, and other fields.

[0003] Currently, potentiometers are all manually controlled, and the resistance value is adjusted by manually turning the switch or moving the corresponding position. They cannot be automatically controlled and are not conducive to precise adjustment. Therefore, this application proposes a film treatment that at least partially solves the above problems. Utility Model Content

[0004] In view of the above problems, the present invention provides an automatic control potentiometer that overcomes or at least partially solves the above problems.

[0005] To address the aforementioned problems, this utility model discloses an automatic control potentiometer, comprising:

[0006] A supporting frame, which contains an insulating plate and a sliding rod;

[0007] The insulating plate is provided with at least two parallel resistors, and the resistors are electrically connected to electrodes;

[0008] A slider is slidably connected to the slide rod, and a brush is provided on the slider to abut against the resistive element;

[0009] A motor is provided on the outside of the support frame, and the output end of the motor is connected to the slider via a belt to drive the slider to move along the slide bar.

[0010] Optionally, a protective casing may also be included;

[0011] The protective outer shell is disposed below the support frame, so that the support frame forms a closed space;

[0012] The slider is at least partially located inside the enclosed space.

[0013] Optionally, the lower end of the protective housing is provided with a mounting groove;

[0014] The lower end of the insulating plate is located within the mounting groove.

[0015] Optionally, the belt is a toothed belt;

[0016] The motor is equipped with a toothed belt pulley; the support frame is equipped with a pulley at one end opposite to the motor;

[0017] The toothed pulley and the pulley are connected by the toothed belt;

[0018] The slider is connected to the toothed belt via a connecting card.

[0019] Optionally, the support frame includes side supports and a top plate connected to the upper end of the side supports;

[0020] The two ends of the insulating plate and the two ends of the slide rod are connected to the inner side of the side support member;

[0021] The motor is connected to the top plate, and its output end extends to the upper end of the top plate.

[0022] Optionally, a dust cover may also be included;

[0023] The dust cover has an arc-shaped cross-section, is located at the upper end of the slide rod, and has an arc-shaped opening facing the slide rod;

[0024] The upper end of the slider is provided with an arched bridge, and the dust cover passes through the arched bridge and is connected to the side support member;

[0025] The upper end of the arched bridge is connected to the belt via a connecting clip.

[0026] Optionally, the upper end of the arched bridge is also provided with a lever.

[0027] Optionally, the brush is composed of multiple elastic metal wires or metal sheets arranged side by side.

[0028] Optionally, the protective housing is made of aluminum alloy.

[0029] This utility model has the following advantages: A supporting frame houses an insulating plate and a sliding rod; the insulating plate has at least two parallel resistive plates electrically connected to electrodes; a slider is slidably connected to the sliding rod, and the slider has brushes that abut against the resistive plates; a motor is located outside the supporting frame, and the motor's output is connected to the slider via a belt to drive the slider to move along the sliding rod. Because the automatic control potentiometer can achieve precise and automatic adjustment, it can adapt to a wider range of application needs, including high-precision measuring equipment, audio equipment, and communication equipment. Users can flexibly configure and adjust it according to actual needs. By achieving automated adjustment, the adjustment accuracy, reliability, and system integration are significantly improved. At the same time, it reduces human error, enhances compatibility with intelligent systems, and expands its application range. Attached Figure Description

[0030] Figure 1This is a schematic diagram of the structure of an embodiment of an automatic control potentiometer according to this utility model;

[0031] Figure 2 yes Figure 1 A schematic diagram of a structure with a dust cover and a protective outer shell;

[0032] Figure 3 yes Figure 2 A schematic diagram of the explosion structure. Detailed Implementation

[0033] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] This utility model provides an embodiment of an automatic control potentiometer, such as... Figures 1 to 3 As shown, it may specifically include: a support frame 101, which has an insulating plate 102 and a slide rod 105 inside; the insulating plate 102 has at least two parallel resistive sheets 103, and the resistive sheets 103 are electrically connected to electrodes 131; a slider 106 is slidably connected to the slide rod 105, and the slider 106 has brushes that abut against the resistive sheets 103; a motor 201 is provided outside the support frame 101, and the output end of the motor 201 is connected to the slider 106 through a belt 203 for driving the slider 106 to move along the slide rod 105.

[0035] By controlling the rotation of the motor 201, the slider 106 is driven to slide along the slide rod 105, allowing the brush to move on the resistor 103. This causes a change in the length of the resistor 103, which is electrically connected to the electrode 131, thereby changing the resistance value. The motor 201 solves the problem in the prior art that adjustment can only be done manually. The resistance value can be adjusted simply by controlling the rotation of the motor 201. Furthermore, the speed of the motor 201 can be controlled to achieve fast or slow adjustment, thus enabling precise automated control.

[0036] In one embodiment of this application, as Figure 2 and Figure 3 As shown, it also includes a protective shell 110; the protective shell 110 is disposed below the support frame 101, so that the support frame 101 forms a closed space; the slider 106 is at least partially located inside the closed space.

[0037] The aforementioned protective casing protects the internal insulating plate 102, slide bar 105, and slider 106, and also prevents dust or other debris from causing dirt or damage to the interior to a certain extent.

[0038] In one embodiment of this application, the lower end of the protective housing 110 is provided with a mounting groove 120; the lower end of the insulating plate 102 is located within the mounting groove 120. By providing a mounting groove 120 in the protective housing 110 and placing the lower end of the insulating plate 102 in the mounting groove 120, the bottom of the insulating plate 102 can be limited, preventing the insulating plate 102 from shifting when vibration is excessive. At the same time, it can ensure that the middle part of the insulating plate 102 is kept and fixed in the enclosed space, so that the resistor 103 will not contact the protective housing 110.

[0039] Furthermore, the protective outer shell 110 is made of aluminum alloy material, such as... Figure 1 and Figure 3 As shown, an electrode 131 can be provided below the lowest resistor 103 so that it contacts the aluminum alloy protective shell 110. This allows the electrode 131 of the other resistor 103 inside to serve as one end of a sliding variable resistor, while the shell serves as the other end electrically connected to the target, thus improving the flexibility of wiring.

[0040] In one embodiment of this application, as Figure 1 As shown, the belt 203 is a toothed belt; the motor 201 is provided with a toothed pulley 202; the support frame 101 is provided with a pulley 109 at one end opposite to the motor 201; the toothed pulley 202 and the pulley 109 are connected by the toothed belt; the slider 106 is connected to the toothed belt by a connecting clip 107.

[0041] With the cooperation of the toothed belt and toothed pulley 202, slippage during transmission can be prevented, further improving the accuracy of resistance value control. In addition, the connecting clip allows the belt 203 to be easily separated from the connecting clip 107. For example, when the belt 203 has been used for a long time, it may become loose and may need to be replaced. The above structure can separate the connecting clip 107 from the belt 203. After replacement, the connecting clip 107 can be reconnected to the belt 203.

[0042] In one embodiment of this application, the support frame 101 includes a side support member 111 and a top plate 112 connected to the upper end of the side support member 111; both ends of the insulating plate 102 and both ends of the slide rod 105 are connected to the inner side of the side support member 111; the motor 201 is connected to the top plate 112, and its output end extends to the upper end of the top plate 112. This structure separates the control section from the internal resistive section.

[0043] In one embodiment of this application, as Figure 2 and Figure 3As shown, it also includes a dust cover 104; the dust cover 104 has an arc-shaped cross-section, is located at the upper end of the slide rod 105, and the arc-shaped opening faces the slide rod 105; the upper end of the slider 106 is provided with an arched bridge 161, and the dust cover 104 passes through the arched bridge 161 and is connected to the side support member 111; the upper end of the arched bridge 161 is connected to the belt 203 through a connecting clip 107. The dust cover 104 can effectively protect the slide rod 105 and prevent dust from falling in and affecting the movement of the slider 106; in order to reduce the friction between the slider 106 and the slide rod 105, lubricating oil can be applied to the slider 106, and the dust cover 104 prevents dust from contaminating the surface of the slide rod 105.

[0044] In one embodiment of this application, the upper end of the arched bridge 161 is also provided with a toggle piece 108, which is used to prevent the motor 201 from failing to drive. The toggle piece 108 can be manually toggled to achieve control. It can also be used to test the potentiometer when the motor 201 is not powered.

[0045] In one embodiment of this application, the brush is composed of multiple elastic metal wires or metal sheets arranged side by side. Compared with a brush composed of a single metal sheet, the brush of this application can generate less heat under the same current.

[0046] It should be noted that, under the same cross-section, multi-strand conductors generate relatively less heat than single-strand conductors at the same current. This is because current has a skin effect on the conductor surface, and multi-strand conductors have a larger external surface area than single-strand conductors, resulting in a more uniform current distribution in multi-strand conductors.

[0047] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0048] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0049] The above provides a detailed description of an automatic control potentiometer provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An automatic control potentiometer, characterized in that, include: A support frame (101) is provided with an insulating plate (102) and a slide bar (105). The insulating plate (102) is provided with at least two parallel resistors (103), and the resistors (103) are electrically connected to electrodes (131). A slider (106) is slidably connected to the slider (105), and a brush that abuts against the resistor (103) is provided on the slider (106). The support frame (101) is provided with a motor (201) on its outside. The output end of the motor (201) is connected to the slider (106) via a belt (203) to drive the slider (106) to move along the slide bar (105).

2. The automatic control potentiometer according to claim 1, characterized in that, It also includes a protective casing (110); The protective shell (110) is disposed below the support frame (101), so that the support frame (101) forms a closed space; The slider (106) is at least partially located inside the enclosed space.

3. The automatic control potentiometer according to claim 2, characterized in that, The lower end of the protective shell (110) is provided with a mounting groove (120); The lower end of the insulating plate (102) is located in the mounting groove (120).

4. The automatic control potentiometer according to claim 1, characterized in that, The belt (203) is a toothed belt; The motor (201) is provided with a toothed pulley (202); the support frame (101) is provided with a pulley (109) at the end opposite to the motor (201). The toothed pulley (202) and the pulley (109) are connected by the toothed belt; The slider (106) is connected to the toothed belt via a connecting card (107).

5. The automatic control potentiometer according to claim 1, characterized in that, The support frame (101) includes a side support (111) and a top plate (112) connected to the upper end of the side support (111). The two ends of the insulating plate (102) and the two ends of the slide rod (105) are connected to the inner side of the side support (111); The motor (201) is connected to the top plate (112), and its output end extends to the upper end of the top plate (112).

6. The automatic control potentiometer according to claim 5, characterized in that, It also includes a dust cover (104); The dust cover (104) has an arc-shaped cross-section, which is located at the upper end of the slide rod (105), and the arc-shaped opening faces the slide rod (105). The upper end of the slider (106) is provided with an arched bridge (161), and the dust cover (104) passes through the arched bridge (161) and is connected to the side support (111); The upper end of the arched bridge (161) is connected to the belt (203) via a connecting clip (107).

7. The automatic control potentiometer according to claim 6, characterized in that, The arched bridge (161) is also equipped with a lever (108) at its upper end.

8. The automatic control potentiometer according to claim 1, characterized in that, The brush is composed of multiple elastic metal wires or metal sheets arranged side by side.

9. The automatic control potentiometer according to claim 2, characterized in that, The protective shell (110) is made of aluminum alloy.

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