Potentiometer, rotating device and vehicle

Abstract

The utility model discloses a potentiometer, a rotating device and a vehicle, relates to the technical field of potentiometers, and aims to solve the problem that the diameter of a shaft body of the potentiometer affects the interference fit effect of the shaft body and a revolving body. The potentiometer comprises a potentiometer body, a rotating body and a potentiometer shaft. The potentiometer main body is provided with a first mounting hole, the rotary body is accommodated in the first mounting hole, and the rotary body is provided with a second mounting hole. The potentiometer shaft comprises a main body section and a mounting section. The main body section is used for being connected with a tested object. One end of the mounting section is connected with the main body section, and the other end is accommodated in the second mounting hole. The installation section is provided with an elastic notch extending in the axial direction, and the elastic notch penetrates through the installation section in the radial direction of the installation section. A connecting block is arranged at the end, away from the body section, of the elastic notch and connected with part of the mounting section on the two sides of the elastic notch. And when the mounting sections and the rotary body are in interference fit and mutually extrude, the mounting sections on the two sides of the elastic notch deform to adapt to interference fit. The potentiometer provided by the utility model is used for acquiring the rotation angle of the measured object.

Description

Technical Field

[0001] The utility model relates to the technical field of potentiometers, in particular to a potentiometer, a rotating device and a vehicle. Background Art

[0002] Cars have become one of the main means of transportation, and with the development of technology, cars have more and more functions. For example, cars are equipped with screens to display vehicle status and implement various multimedia functions such as playing music and videos.

[0003] To provide a better user experience, a drive mechanism is typically used to rotate the screen to provide different viewing angles. To precisely drive the screen's rotation, a potentiometer is included in the drive mechanism to determine the screen's rotation angle. The potentiometer is connected to the screen via a shaft at one end, while the other end of the shaft is connected to a rotating body through an interference fit. As the shaft rotates with the screen, it drives the rotating body, thereby determining the screen's rotation angle.

[0004] If the shaft diameter is too large, the interference fit between the shaft and the rotor will be too tight, causing the rotor to squeeze other precision components of the potentiometer, resulting in damage. If the shaft diameter is too small, the interference fit between the shaft and the rotor will be too loose, and the shaft will not be able to drive the rotor to rotate, causing the potentiometer to malfunction. Therefore, whether the shaft diameter is too large or too small will affect the interference fit between the shaft and the rotor, thus affecting the normal operation of the potentiometer. Utility Model Content

[0005] The embodiments of the present utility model provide a potentiometer, a rotating device and a vehicle, which are used to solve the problem that the diameter of the potentiometer shaft affects the interference fit effect between the shaft and the rotating body.

[0006] In order to achieve the above-mentioned purpose, the embodiments of the present invention adopt the following technical solutions:

[0007] In a first aspect, embodiments of the present application provide a potentiometer for detecting the rotation angle of a measured object. The potentiometer comprises a potentiometer body, a rotating body, and a potentiometer shaft. The potentiometer body has a first mounting hole, the rotating body is received within the first mounting hole, and the rotating body has a second mounting hole, the rotating body being rotationally connected to the potentiometer body.

[0008] The potentiometer shaft consists of a main section and a mounting section. The main section is used to connect to the object being measured. One end of the mounting section is connected to the main section, and the other end is accommodated in the second mounting hole. The mounting section is provided with an elastic notch extending axially and radially through the mounting section. A connecting block is provided at the end of the elastic notch away from the main section, connecting to portions of the mounting section on either side of the elastic notch.

[0009] Based on this, the potentiometer shaft of the potentiometer is inserted into the second mounting hole of the rotating body, creating an interference fit between the potentiometer shaft and the rotating body. The potentiometer shaft and the rotating body squeeze each other, causing the potentiometer shaft to press against the rotating body, causing the rotating body to deform. This deformation of the rotating body simultaneously applies a reaction force to the potentiometer shaft. Because the potentiometer shaft has an elastic notch, the reaction force from the rotating body causes the potentiometer shaft to bend within the elastic notch.

[0010] In this way, when the potentiometer shaft and the rotary body are in interference fit, the potentiometer shaft will not excessively squeeze the rotary body, and the deformation of the rotary body will not be too large. This will prevent the rotary body from squeezing other precision components of the potentiometer, thereby avoiding damage to the precision components and preventing the potentiometer from malfunctioning.

[0011] In addition, since the mounting section of the potentiometer shaft provided in the present application is provided with an elastic notch, the presence of the elastic notch can achieve the effect as described above, namely, preventing the potentiometer shaft from excessively squeezing the rotating body, that is, preventing the rotating body from being squeezed when the diameter of the potentiometer shaft is too large, thereby preventing the situation where the shape of the rotating body is too large and squeezing the precision components to damage the potentiometer.

[0012] In addition, to avoid the situation where the potentiometer shaft diameter is too small, the interference fit between the potentiometer shaft and the rotating body is too loose, resulting in the potentiometer shaft being unable to drive the rotating body to rotate. Within a certain range, the diameter of the potentiometer shaft can be increased to ensure an effective interference fit between the potentiometer shaft and the rotating body without worrying about the potentiometer being damaged due to the potentiometer shaft diameter being too large.

[0013] In addition, it should be noted that the connecting block provided at one end of the elastic notch away from the main section can provide support for part of the installation section located on both sides of the connecting block, so that when the installation section is deformed by the reaction force exerted by the rotating body, the deformation will not be too large.

[0014] Furthermore, due to the support of the connecting block, the deformation capacity of the mounting section in the axial direction of the potentiometer shaft is relatively balanced. Excessive deformation at one location or too little deformation at another location will not occur. This ensures that when there is an interference fit between the potentiometer shaft and the rotating body, the interaction force at all points of contact between the potentiometer shaft and the rotating body is uniform. This prevents excessive deformation of the rotating body from damaging the potentiometer's precision components, nor does it prevent the rotating body from being unable to rotate with the potentiometer shaft due to an overly loose interference fit, causing the potentiometer to fail.

[0015] Therefore, the potentiometer shaft provided in the present application is provided with an elastic notch and a connecting block on the mounting section. This prevents the interference fit between the mounting section and the rotating body from being too tight, causing excessive deformation of the rotating body and damage to other precision components. It also prevents the interference fit between the mounting section and the rotating body from being too loose, causing the potentiometer shaft to be unable to drive the rotating body to rotate, resulting in the potentiometer malfunctioning.

[0016] In some embodiments, the mounting section includes a first shaft section and a second shaft section. One end of the first shaft section is connected to the main body section, and the second shaft section is connected to the other end of the first shaft section. Elastic notches are provided on the first and second shaft sections. The cross-sectional area of ​​the second shaft section gradually decreases along the axial direction of the potentiometer shaft from the end of the second shaft section closest to the first shaft section to the end of the second shaft section further away from the first shaft section.

[0017] In some embodiments, the potentiometer shaft further includes a protrusion, which is provided on the mounting section.

[0018] In some embodiments, the protrusion includes a first sub-protrusion and a second sub-protrusion, and the first sub-protrusion and the second sub-protrusion are spaced apart along the circumference of the mounting segment.

[0019] In some embodiments, along the axial direction of the mounting section, the protrusion is provided at half the length of the elastic notch.

[0020] In some embodiments, the mounting segment has a first surface and a second surface circumferentially, wherein the first surface is a plane and the second surface is an arcuate surface. The second mounting hole of the rotating body has a third surface and a fourth surface circumferentially, wherein the third surface is a plane and the fourth surface is an arcuate surface. The first surface contacts the third surface, and the second surface contacts the fourth surface.

[0021] In some embodiments, the protrusion is disposed opposite to the first surface.

[0022] In a second aspect, an embodiment of the present application provides a rotating device, comprising an object to be measured, a base, and any one of the above-mentioned potentiometers.

[0023] In some embodiments, the object to be measured is a screen.

[0024] In a third aspect, an embodiment of the present application provides a vehicle comprising a screen and any one of the above-mentioned rotating devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of a potentiometer provided in an embodiment of the present application;

[0026] Figure 2 for Figure 1 Exploded view of the potentiometer;

[0027] Figure 3 for Figure 1 Schematic diagram of the potentiometer shaft;

[0028] Figure 4 for Figure 3 A partial enlarged view of the middle potentiometer shaft;

[0029] Figure 5 for Figure 3A cross-sectional view of the potentiometer shaft;

[0030] Figure 6 for Figure 3 A partial enlarged view of the potentiometer shaft from another perspective;

[0031] Figure 7 for Figure 3 A partial enlarged view of the potentiometer shaft from another perspective;

[0032] Figure 8 for Figure 1 Schematic diagram of the potentiometer body.

[0033] Reference numerals:

[0034] 100-potentiometer; 1-potentiometer body; 10-first mounting hole; 2-rotating body; 201-third surface; 202-fourth surface; 20-second mounting hole; 3-potentiometer shaft; 31-main body section; 321-first shaft section; 322-second shaft section; 32-mounting section; 3201-first surface; 3202-second surface; 320-elastic notch; 33-protrusion; 331-first sub-protrusion; 332-second sub-protrusion; 4-connecting block. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0038] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0040] Cars have become a primary means of transportation for daily commutes. With the continuous development of the automotive industry, people's expectations for driving comfort are also increasing. For example, cars often feature screens that display vehicle status and enable multimedia functions such as music and video playback. To provide a better user experience for passengers in different positions, these screens are typically designed to rotate within a certain range, for example, left and right.

[0041] In order to accurately control the rotation of the above-mentioned screen, it is necessary to use a potentiometer to collect the rotation angle of the screen. In the related art, the potentiometer usually includes a shaft, a rotating body and other components. Among them, one end of the shaft is connected to the object to be measured, and the other end is connected to the rotating body. When the shaft rotates with the object to be measured, the shaft can drive the rotating body to rotate, and further detect the rotation angle of the object to be measured through other components that cooperate with the rotating body. The shaft and the rotating body are connected by an interference fit. When the diameter of the shaft is too large, the interference fit between the shaft and the rotating body is too tight, which will expand the rotating body, and then cause the rotating body to squeeze other precision components, causing damage to other precision components. If the diameter of the shaft is too small, the interference fit between the shaft and the rotating body is too loose, and the rotating body may not be able to rotate with the rotation of the shaft, resulting in failure of the potentiometer function.

[0042] In order to solve the above problems, the present application provides a potentiometer, such as Figure 1 As shown, Figure 1 Schematic diagram of a potentiometer 100 provided in this application. The potentiometer 100 is used to collect the rotation angle of the object under test.

[0043] like Figure 2 As shown, the potentiometer 100 includes a potentiometer body 1, and the potentiometer body 1 is provided with a first mounting hole 10. The first mounting hole 10 can provide a mounting position for other components.

[0044] Potentiometer 100 also includes a rotating body 2, which is accommodated in first mounting hole 10 and has a second mounting hole 20. Rotating body 2 is rotatably connected to potentiometer body 1. When rotating body 2, located in first mounting hole 10, rotates relative to potentiometer body 1, the resistance value of potentiometer 100 changes. This change in resistance is then converted into a rotation angle of the object being measured.

[0045] The potentiometer 100 also includes a potentiometer shaft 3, which is used to connect the object to be measured and the rotating body 2. When the object to be measured rotates, it drives the potentiometer shaft 3 connected to it, and then the potentiometer shaft 3 drives the rotating body 2 connected to it, so that the resistance value of the potentiometer 100 changes, and then the rotation angle of the object to be measured is obtained according to the change in the resistance value of the potentiometer 100.

[0046] Continue to see Figure 3 The potentiometer shaft 3 includes a main body section 31 for connecting to the object to be measured and a mounting section 32 , one end of which is connected to the main body section 31 and the other end of which is received in the second mounting hole 20 .

[0047] The mounting section 32 is provided with an elastic notch 320 extending axially along the mounting section 32 , and the elastic notch 320 penetrates the mounting section 32 along the radial direction of the mounting section 32 .

[0048] A connecting block 4 is provided at one end of the elastic notch 320 away from the main body section 31 , and the connecting block 4 is connected to parts of the mounting sections 32 on both sides of the elastic notch 320 .

[0049] The potentiometer shaft 3 of the potentiometer 100 provided herein is inserted into the second mounting hole 20 of the rotating body 2, with an interference fit between the potentiometer shaft 3 and the rotating body 2. The potentiometer shaft 3 and the rotating body 2 are squeezed against each other, causing the potentiometer shaft 3 to squeeze the rotating body 2, causing the rotating body 2 to deform. As the rotating body 2 deforms, a reaction force is applied to the potentiometer shaft 3. Since the potentiometer shaft 3 is provided with an elastic notch 320, when the potentiometer shaft 3 is subjected to the reaction force from the rotating body 2, it will bend within the elastic notch 320.

[0050] In this way, when the potentiometer shaft 3 and the rotating body 2 are in interference fit, the potentiometer shaft 3 will not excessively squeeze the rotating body 2, and the deformation of the rotating body 2 will not be too large. This prevents the rotating body 2 from squeezing other precision components of the potentiometer 100, thereby preventing the precision components from being damaged and the potentiometer 100 from malfunctioning.

[0051] In addition, it should be noted that since the mounting section 32 of the potentiometer shaft 3 provided in the present application is provided with an elastic notch 320, the presence of the elastic notch 320 can achieve the effect as described above, namely, preventing the potentiometer shaft 3 from excessively squeezing the rotating body 2, that is, preventing the potentiometer shaft 3 from squeezing the rotating body 2 when the diameter is too large, thereby preventing the rotating body 2 from being deformed too much and squeezing precision components to damage the potentiometer 100.

[0052] Based on this, in order to avoid the situation where the potentiometer shaft 3 has an excessively small diameter, resulting in an excessively loose interference fit between the potentiometer shaft 3 and the rotating body 2, and thus the potentiometer shaft 3 cannot drive the rotating body 2 to rotate, the diameter of the potentiometer shaft 3 can be increased within a certain range to ensure an effective interference fit between the potentiometer shaft 3 and the rotating body 2, without worrying about the potentiometer 100 being damaged due to the potentiometer shaft 3 being too large in diameter.

[0053] In addition, it should be noted that the connecting block 4 provided at the end of the elastic notch 320 away from the main section 31 can provide support for part of the mounting section 32 located on both sides of the connecting block 4, so that when the mounting section 32 is deformed by the reaction force applied by the rotating body 2, the deformation will not be too large.

[0054] Furthermore, due to the support provided by the connecting block 4, the deformation capacity of the mounting section 32 in the axial direction of the potentiometer shaft 3 is relatively balanced. Excessive or insufficient deformation at any one location will not occur. This ensures that, when the potentiometer shaft 3 and the rotating body 2 are in interference fit, the interaction force at all points of contact between the potentiometer shaft 3 and the rotating body 2 is uniform. This prevents excessive deformation of the rotating body 2, which could damage the precision components of the potentiometer 100, and prevents the rotating body 2 from being unable to rotate with the potentiometer shaft 3 due to an excessively loose interference fit, which could render the potentiometer 100 inoperable.

[0055] As can be seen from the above, the potentiometer shaft 3 provided in the present application, by providing the elastic notch 320 and the connecting block 4 on the mounting section 32, ensures that the interference fit between the mounting section 32 and the rotating body 2 is not too tight, causing excessive deformation of the rotating body 2 and damage to other precision components. It also prevents the potentiometer shaft 3 from being unable to drive the rotating body 2 to rotate due to the interference fit between the mounting section 32 and the rotating body 2 being too loose, thereby preventing the potentiometer 100 from malfunctioning.

[0056] Next, the installation section 32 will be further described with reference to the accompanying drawings.

[0057] like Figure 4 As shown, the mounting section 32 includes a first shaft section 321, one end of which is connected to the main body section 31. The mounting section 32 also includes a second shaft section 322, which is connected to the other end of the first shaft section 321. Based on this, elastic notches 320 are provided on the first shaft section 321 and the second shaft section 322.

[0058] like Figure 5 As shown, along the axial direction of the potentiometer shaft 3 , the cross-sectional area of ​​the second shaft segment 322 gradually decreases from one end of the second shaft segment 322 close to the first shaft segment 321 to the other end of the second shaft segment 322 away from the first shaft segment 321 .

[0059] In some embodiments of the present application, the second shaft section 322 may be tapered, so that during assembly, the second shaft section 322 of the mounting section 32 may serve as a guide, facilitating insertion of the mounting section 32 into the second mounting hole 20 of the rotating body 2 .

[0060] like Figure 6 As shown, in some embodiments of the present application, the potentiometer shaft 3 further includes a protrusion 33 , and the protrusion 33 is provided on the mounting section 32 .

[0061] In this way, the protrusion 33 on the mounting section 32 can contact the inner wall of the rotating body 2, ensuring that the mounting section 32 can contact and abut the rotating body 2. If the inner wall of the rotating body 2 or the surface of the mounting section 32 is uneven and cannot fully contact each other, the protrusion 33 can ensure that the rotating body 2 and the mounting section 32 are fully in contact and squeeze each other, thereby ensuring that the rotating body 2 can rotate when the potentiometer shaft 3 rotates.

[0062] Continue to see Figure 6 The protrusion 33 includes a first sub-protrusion 331 and a second sub-protrusion 332 , and the first sub-protrusion 331 and the second sub-protrusion 332 are spaced apart along the circumference of the mounting section 32 .

[0063] In this way, when the mounting section 32 contacts and squeezes the rotating body 2 through the protrusion 33, the mounting section 32 can more evenly apply force to the rotating body 2 through the first sub-protrusion 331 and the second sub-protrusion 332 arranged at intervals. This prevents excessive force from being applied to a part of the rotating body 2, thereby preventing excessive deformation of the rotating body 2 caused by the excessive force, thereby ensuring that other precision components of the potentiometer 100 will not be damaged by excessive deformation of the rotating body 2.

[0064] In some embodiments of the present application, the above-mentioned first sub-protrusion 331 and second sub-protrusion 332 can be respectively located on both sides of the elastic notch 320, so that the first sub-protrusion 331 and second sub-protrusion 332 of the mounting section 32 on both sides of the elastic notch 320 respectively contact and squeeze the rotating body 2, so that the interaction force between the mounting section 32 and the rotating body 2 is more uniform.

[0065] In some embodiments of the present application, the protrusion 33 is located at one-half of the elastic notch 320 along the axial direction of the mounting section 32. It is understood that along the length direction of the elastic notch 320, from one end of the elastic notch 320 to the other end, the degree of elastic deformation caused by the force first increases and then decreases. Therefore, the deformation capacity of the elastic notch 320 is best at one-half. In general, arranging the protrusion 33 at one-half of the elastic notch 320 can better fix the mounting section 32 and the rotating body 2 to each other through an interference fit, and will not cause a poor interference fit between the mounting section 32 and the rotating body 2 due to the poor deformation capacity of the elastic notch 320, thereby affecting the normal operation of the potentiometer 100.

[0066] It should be noted that, see Figure 7 The mounting section 32 has a first surface 3201 and a second surface 3202 in the circumferential direction. The first surface 3201 is a plane, and the second surface 3202 is an arc surface. Figure 8 As shown, the second mounting hole 20 of the rotating body 2 has a third surface 201 and a fourth surface 202 in the circumferential direction. The third surface 201 is a plane, and the fourth surface 202 is an arc surface.

[0067] That is, the surface of the mounting section 32 along the circumferential direction is composed of an arc surface and a plane surface, and the inner surface of the second mounting hole 20 of the rotating body 2 that cooperates with it is also composed of an arc surface and a plane surface.

[0068] Thus, when the mounting section 32 is placed in the second mounting hole 20 (see Figure 1 ), the mounting section 32 and the rotating body 2 are prevented from rotating relative to each other by friction, while the first surface 3201 contacts the third surface 201, and the second surface 3202 contacts the fourth surface 202. The planar first surface 3201 and the third surface 201 further prevent relative rotation between the mounting section 32 and the rotating body 2 based on friction. This ensures that the rotating body 2 can be driven by the rotation of the potentiometer shaft 3.

[0069] On this basis, in some embodiments, the raised portion 33 is arranged opposite to the above-mentioned first surface 3201. In this way, when the raised portion 33 contacts the rotating body 2 and the two are squeezed against each other, the raised portion 33 arranged opposite to the first surface 3201 can make the interaction force between the first surface 3201 and the third surface 201 stronger when it is subjected to the force of the rotating body 2, thereby making the contact between the first surface 3201 and the third surface 201 more complete, increasing the friction force, and further ensuring that the rotating body 2 can be driven to rotate when the mounting section 32 rotates.

[0070] On this basis, an embodiment of the present application further provides a rotating device, comprising any of the above-mentioned potentiometers 100 and an object to be measured. The rotating device may further comprise a base, one side of the base being connected to the object to be measured, and the other side of the base being connected to the main body section 31 of the potentiometer shaft 3.

[0071] In this way, the object under test can be connected to one side of the base, and the other side of the base can be connected to the main body section 31. When the object under test rotates, it can drive the base connected to it, and the base then drives the potentiometer shaft 3 to rotate. The rotating body 2 of the potentiometer 100 rotates with the potentiometer shaft 3, allowing the potentiometer 100 to obtain information related to the rotation angle of the object under test.

[0072] For example, the object to be measured may be a screen in a car, where the screen is connected to one side of the base.

[0073] When the object to be measured is the above-mentioned screen, the rotating device 200 provided in the present application may further include components such as a housing, a control host, a motor, and a reduction gearbox.

[0074] The housing has an interior mounting cavity, in which the potentiometer 100 is disposed. A control host is also disposed in the mounting cavity and connected to the housing. The control host is also electrically connected to the potentiometer 100 to obtain screen rotation angle information detected by the potentiometer 100, thereby obtaining the screen rotation angle.

[0075] The motor is arranged in the mounting cavity and connected to the housing, and the motor is also electrically connected to the control host. In this way, the control host can further drive the motor to work and drive the screen to rotate according to the obtained screen rotation angle.

[0076] On this basis, the reduction box is arranged in the installation cavity of the shell and is connected to the shell. The reduction box is connected to the drive motor. The drive motor drives the reduction box to work, and then the reduction box drives the screen to rotate.

[0077] On this basis, the present application also provides a vehicle, which includes any of the above-mentioned rotating devices and a screen, and the rotating device is used to drive the screen to rotate, thereby providing different viewing angles for vehicle passengers and meeting the viewing needs of passengers in different positions.

[0078] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A potentiometer for collecting the rotation angle of a measured object, characterized in that: The potentiometer comprises: A potentiometer body, wherein the potentiometer body is provided with a first mounting hole; a rotating body, the rotating body being accommodated in the first mounting hole, the rotating body being provided with a second mounting hole, the rotating body being rotatably connected to the potentiometer body; and Potentiometer shaft, including: a main body segment, the main body segment being used to connect with the object to be measured; a mounting section, one end of which is connected to the main body section, and the other end of which is accommodated in the second mounting hole; The mounting section is provided with an elastic notch extending axially along the mounting section, and the elastic notch penetrates the mounting section in a radial direction of the mounting section; A connecting block is provided at one end of the elastic notch away from the main body section, and the connecting block is connected to parts of the mounting sections on both sides of the elastic notch.

2. The potentiometer according to claim 1, characterized in that The installation section includes: a first shaft segment, one end of which is connected to the main body segment; a second shaft segment, the second shaft segment being connected to the other end of the first shaft segment, the elastic notch being provided on the first shaft segment and the second shaft segment; Wherein, along the axial direction of the potentiometer shaft, the cross-sectional area of ​​the second shaft segment gradually decreases from one end of the second shaft segment close to the first shaft segment to one end of the second shaft segment away from the first shaft segment.

3. The potentiometer according to claim 1, characterized in that The potentiometer shaft also includes: A raised portion is provided on the mounting section.

4. The potentiometer according to claim 3, characterized in that The protrusion includes a first sub-protrusion and a second sub-protrusion, and the first sub-protrusion and the second sub-protrusion are spaced apart along the circumference of the mounting segment.

5. The potentiometer according to claim 3, characterized in that: Along the axial direction of the mounting section, the protrusion is arranged at half the length of the elastic notch.

6. The potentiometer according to claim 3, characterized in that The mounting section has a first surface and a second surface in the circumferential direction, the first surface is a plane, and the second surface is a curved surface; The second mounting hole of the rotating body has a third surface and a fourth surface in the circumferential direction, the third surface is a plane, and the fourth surface is an arc surface; The first surface contacts the third surface, and the second surface contacts the fourth surface.

7. The potentiometer according to claim 6, characterized in that The protrusion is arranged opposite to the first surface.

8. A rotating device, characterized in that: include: The potentiometer according to any one of claims 1 to 7; the object to be measured; A base, one side of the base is connected to the object to be measured, and the other side of the base is connected to the main body segment.

9. The rotating device according to claim 8, characterized in that The object to be measured is a screen.

10. A vehicle, characterized in that: include: The rotating device according to any one of claims 8 to 9; The screen is driven by the rotating device.

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