Adjustable damping structure

Abstract

The utility model relates to an adjustable damping structure which comprises an output shaft, a driving motor, a damping piece and an adjusting assembly. The driving motor is connected with the output shaft and is used for driving the output shaft to rotate; the damping piece is installed on the output shaft and used for generating friction with the output shaft when the output shaft rotates. The adjusting assembly comprises a spring, a rotation stopping gasket and a locking nut which are sequentially installed on the output shaft, the damping piece is arranged on the side, away from the rotation stopping gasket, of the spring, and rotation stopping tooth-shaped parts which can be meshed with each other are arranged on the surface of the rotation stopping gasket and the surface of the locking nut. Wherein the output shaft is provided with a thread matched with the locking nut. The damping torque can be adjusted in real time, operation is easy and convenient, the anti-loosening function is achieved, it can be ensured that the damping torque is output stably, and use reliability is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle-mounted electronic equipment, and more specifically, to an adjustable damping structure. Background Technology

[0002] Some existing in-vehicle electronic devices, such as flip screens and head-up displays, are usually equipped with damping structures to provide damping force during their movement and ensure smooth operation of the device.

[0003] Current damping structures typically consist of a damping element, a spring, a rotating shaft, and a spring preload structure. The damping element is mounted on the output shaft and contacts a protruding structure on the output shaft or a part fixedly mounted on the output shaft. When the output shaft rotates, the dynamic friction generated by the contact surface provides damping for the output shaft. The spring preload structure applies force to the spring, pressing the damping element to ensure full contact and the generation of damping force. However, existing spring preload structures are usually directly fixed to the output shaft, making disassembly inconvenient. As a result, after assembly, the total damping torque is a fixed value and cannot be adjusted, leading to poor practicality. In practical applications, if the damping torque is not within the required specification range, it will be treated as a defective product, resulting in significant waste and increased costs. Utility Model Content

[0004] In view of this, the present invention provides a damping structure that allows for adjustment of damping torque at any time, is simple and convenient to operate, and ensures stable output of damping torque with high reliability.

[0005] An adjustable damping structure includes: an output shaft; a drive motor connected to the output shaft for driving the output shaft to rotate; a damping element mounted on the output shaft for generating friction with the output shaft when it rotates; and an adjustment assembly including a spring, an anti-rotation washer, and a locking nut sequentially mounted on the output shaft, wherein the damping element is located on the side of the spring away from the anti-rotation washer, and the surfaces of the anti-rotation washer and the locking nut are provided with interlocking anti-rotation teeth; wherein the output shaft is provided with threads that mate with the locking nut.

[0006] In the above technical solution, the spring and anti-rotation washer are slidably mounted on the output shaft. Tightening the lock nut allows the spring to press the damping element. The damping element does not rotate with the output shaft. There is a contact surface between the damping element and the output shaft perpendicular to the output shaft's axial direction. When the output shaft rotates, friction is generated between the damping element and the output shaft. This frictional force resists the rotation of the output shaft, thus providing damping force. Tightening and loosening the lock nut adjusts the spring's preload, changing the pressure applied by the spring to the damping element, thereby adjusting the frictional force between the contact surface of the output shaft and the damping element, and thus adjusting the damping torque. The system is effective, easy to operate, and can be adjusted at any time during use without disassembly, making it more practical. The anti-rotation washer rotates with the output shaft. Both the anti-rotation washer and the locking nut have anti-rotation teeth on their adjacent surfaces. When the locking nut and the anti-rotation washer are in contact, the spring force causes them to mesh tightly, forming an interlock. This restricts relative rotation between the locking nut and the anti-rotation washer, preventing the locking nut from loosening during output shaft rotation. This ensures stable damping torque output and effectively improves reliability.

[0007] In one example of this utility model, the anti-rotation toothed portion is a wave-shaped structure with alternating concave and convex shapes.

[0008] In the above technical solution, the wavy structure can make the fit between the locking nut and the anti-rotation washer tighter, and after engagement, it can significantly increase the contact area, increase the frictional resistance between the contact surfaces, and improve the anti-loosening effect.

[0009] In one example of this utility model, the output shaft is provided with a stepped portion, and the damping element is located between the stepped portion and the spring.

[0010] In the above technical solution, the stepped portion is used to provide axial support and limit for the damping component and adjustment assembly installed on the output shaft, ensuring the stability of the installation. At the same time, the spring presses the damping component against the stepped portion. When the output shaft rotates, dynamic friction can be generated between the damping component and the stepped portion, providing damping force for the output shaft. Moreover, the dynamic friction can change with the pressure applied by the spring, so the damping torque can be adjusted by adjusting the locking nut.

[0011] In one example of this utility model, the output shaft has two flat portions on both sides, and the anti-rotation washer has an oblong hole that mates with the output shaft.

[0012] In the above technical solution, the output shaft is a waist-shaped structure with two flat parts formed by cutting on both sides. The anti-rotation washer is provided with a matching waist-shaped hole, so that the output shaft can drive the anti-rotation washer to rotate, thereby preventing the anti-rotation washer from rotating relative to the lock nut and ensuring the anti-loosening effect of the lock nut.

[0013] In one example of this utility model, washers are connected to both sides of the spring, and the washers are provided with waist-shaped holes that mate with the output shaft.

[0014] In the above technical solution, the waist-shaped hole on the washer allows the spring to rotate with the output shaft, preventing friction between the spring and the structures that fit on both sides from affecting the damping torque.

[0015] In one example of this invention, a housing is also included, on which the output shaft and drive motor are mounted.

[0016] In the above technical solution, the housing is used to provide a mounting carrier for the output shaft and drive motor, making the overall structure more compact.

[0017] In one example of this utility model, a first gear is sleeved on the output end of the drive motor, a second gear is sleeved on the output shaft, and a transmission gear is provided between the first gear and the second gear, the transmission gear meshing with the first gear and the second gear respectively.

[0018] In the above technical solution, the transmission gear is used to transmit the torque output by the drive motor to the output shaft, so that the output shaft rotates. By setting the first gear and the second gear, the transmission ratio between the drive motor and the output shaft can be adjusted.

[0019] In one example of this utility model, the housing is provided with a receiving groove, the output shaft is rotatably inserted through the bottom of the receiving groove, and the damping element and the adjusting assembly are disposed in the receiving groove.

[0020] In the above technical solution, the receiving groove is used to house the damping components and adjustment components, preventing them from being directly exposed to the outside and protecting the structure.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] This utility model has a simple overall structure, with readily available parts and low manufacturing cost. It includes a locking nut and a spring. By rotating the locking nut, the preload of the spring can be adjusted, thereby changing the force applied by the spring to the damping component and adjusting the damping torque. Operation is simple and allows for real-time, rapid adjustment without disassembly, improving convenience and practicality. An anti-rotation washer is provided between the spring and the locking nut. Both the anti-rotation washer and the locking nut have interlocking anti-rotation teeth on their surfaces. These teeth interlock the anti-rotation washer and the locking nut, restricting relative rotation between them and preventing the locking nut from loosening during output shaft rotation. This ensures stable output of the damping torque and effectively improves the reliability of the damping structure. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a perspective view of the adjustable damping structure of this utility model.

[0025] Figure 2 This is a perspective view of the adjustable damping structure of this utility model (after removing the shell).

[0026] Figure 3 for Figure 2 Exploded view.

[0027] Figure 4 for Figure 3 A magnified view of area A in the middle.

[0028] Explanation of the reference numerals in the figure:

[0029] 1-Output shaft; 11-Stepped part; 12-Flat part; 13-Mounting part; 14-Second gear; 2-Drive motor; 21-First gear; 3-Housing; 31-Receiving groove; 4-Adjusting component; 41-Spring; 411-Washer; 42-Anti-rotation washer; 421-Anti-rotation toothed part; 43-Locking nut; 5-Transmission gear. Detailed Implementation

[0030] To facilitate understanding of this invention, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0031] Please refer to Figures 1 to 4 In a preferred embodiment, an adjustable damping structure is provided, comprising an output shaft 1, a drive motor 2, a housing 3, a damping element, and an adjustment assembly 4. The output shaft 1 provides torque to an external device; the drive motor 2 is connected to the output shaft 1 and drives the output shaft 1 to rotate; the housing 3 provides a mounting carrier, and the output shaft 1 and the drive motor 2 are mounted on the housing 3; the damping element is mounted on the output shaft 1 and generates friction with it when the output shaft 1 rotates; the adjustment assembly 4 includes a spring 41, an anti-rotation washer 42, and a locking nut 43 sequentially mounted on the output shaft 1, with the damping element located on the side of the spring 41 away from the anti-rotation washer 42, and the surfaces of the anti-rotation washer 42 and the locking nut 43 having interlocking anti-rotation teeth 421; wherein the output shaft 1 has threads that mate with the locking nut 43 (not specifically shown in the figure).

[0032] It should be noted that the damping element in this embodiment is not specifically shown. It can be a friction plate with a certain coefficient of friction. There is a contact surface between the damping element and the output shaft 1 that is perpendicular to the axial direction of the output shaft 1. When the output shaft 1 rotates, the friction force generated by the contact surface hinders the rotation of the output shaft 1, thereby providing a damping force. Damping elements that generate damping through friction have many applications in the prior art, so their specific structure will not be described in detail here.

[0033] Specifically, spring 41 and anti-rotation washer 42 are slidably mounted on output shaft 1. By adjusting lock nut 43, spring 41 can press the damping element. The damping element can move axially along output shaft 1 but does not rotate with output shaft 1. When output shaft 1 rotates, friction is generated between the contact surface of damping element and output shaft 1. This frictional force resists the rotation of output shaft 1, thus providing damping force to output shaft 1. By tightening and loosening lock nut 43, the preload of spring 41 can be adjusted, changing the pressure applied by spring 41 to damping element, thereby adjusting the frictional force between the contact surface of output shaft 1 and damping element, achieving the effect of adjusting damping torque. The operation is simple and... It can be adjusted at any time during use without disassembly, making it more practical. The anti-rotation washer 42 rotates with the output shaft 1. The anti-rotation washer 42 and the locking nut 43 are both provided with anti-rotation toothed parts 421 on their adjacent surfaces. When the locking nut 43 and the anti-rotation washer 42 are in contact, under the elastic force provided by the spring 41, the locking nut 43 and the anti-rotation toothed parts 421 of the anti-rotation washer 42 are tightly engaged to form an interlock. This can limit the relative rotation between the locking nut 43 and the anti-rotation washer 42, thereby preventing the locking nut 43 from loosening during the rotation of the output shaft 1, achieving the effect of preventing loosening, ensuring stable output of damping torque, and effectively improving the reliability of use.

[0034] Understandably, to ensure that the pressure applied by the spring 41 can affect the magnitude of the dynamic friction between the damping element and the output shaft 1, the damping element and the output shaft 1 have a contact surface perpendicular to the direction of the spring force of the spring 41. In addition, to ensure the relative rotation between the damping element and the output shaft 1, a matching limiting structure can be provided on the housing 3 and the damping element, so that the housing 3 can limit the rotation of the damping element, thereby preventing the damping element from rotating with the output shaft 1, thus ensuring the generation of friction on the contact surface. The limiting structure can be a groove and a protrusion, or other structures that can satisfy the rotation limiting, without specific restrictions. However, it needs to be ensured that the limiting structure only restricts the rotation of the damping element and does not limit the damping element in the axial direction of the output shaft 1, so that the damping element can move in the axial direction of the output shaft 1, and the damping torque can be adjusted by the pressure of the spring 41 on the damping element.

[0035] For example, the output shaft 1 has a stepped portion 11, and a damping element is located between the stepped portion 11 and the spring 41. The spring 41 presses the damping element against the stepped portion 11, creating a contact surface between the damping element and the output shaft 1. When the output shaft 1 rotates, dynamic friction is generated between the damping element and the end face of the stepped portion 11, providing damping force to the output shaft 1. This dynamic friction can vary with the pressure applied by the spring 41, thereby adjusting the damping torque by adjusting the locking nut 43. Furthermore, the stepped portion 11 also provides axial support and limiting for the damping element and adjusting assembly 4 mounted on the output shaft 1, ensuring installation stability.

[0036] It should be noted that in some other embodiments, in addition to providing the step portion 11, a non-integral part that rotates with the output shaft 1 can also be fixedly installed on the output shaft 1. Through the contact between the part and the damping component, a dynamic friction force that resists the rotation of the output shaft 1 is generated when the output shaft 1 rotates, thereby providing damping and achieving the same technical effect.

[0037] Preferably, the output shaft 1 is only partially threaded (not shown in the figure) to meet the installation requirements of the locking nut 43.

[0038] Please refer to Figure 4 In this embodiment, the anti-rotation toothed part 421 has an alternating concave and convex wave-shaped structure. The wave-shaped structure can make the fit between the locking nut 43 and the anti-rotation washer 42 tighter, and after engagement, it can significantly increase the contact area, increase the frictional resistance between the contact surfaces, and improve the anti-loosening effect.

[0039] Please refer to Figures 1 to 3In this embodiment, two flat portions 12 are provided on both sides of the output shaft 1 to form an waist-shaped structure. From the cross-section of the output shaft 1, the cross-sectional shape of the output shaft 1 consists of two parallel straight lines and two arcs. The anti-rotation washer 42 is provided with a waist-shaped hole that cooperates with the output shaft 1, so that the output shaft 1 can drive the anti-rotation washer 42 to rotate together, thereby preventing the anti-rotation washer 42 from rotating relative to the locking nut 43, so as to ensure the anti-loosening effect of the locking nut 43.

[0040] Furthermore, washers 411 are fixedly connected to both sides of the spring 41. The washers 411 are provided with waist-shaped holes that cooperate with the output shaft 1. Through the waist-shaped holes provided on the washers 411, the spring 41 rotates together with the output shaft 1, preventing relative movement between the spring 41 and the friction plates and anti-rotation washers 42 on both sides, avoiding additional friction and affecting the damping torque.

[0041] Please refer to Figure 2 and Figure 3 The output end of the drive motor 2 is fitted with a first gear 21, and the output shaft 1 is fitted with a second gear 14. A transmission gear 5 is provided between the first gear 21 and the second gear 14. The transmission gear 5 meshes with the first gear 21 and the second gear 14 respectively. The transmission gear 5 is used to transmit the torque output by the drive motor 2 to the output shaft 1, so that the output shaft 1 rotates. By setting the first gear 21 and the second gear 14, the transmission ratio between the drive motor 2 and the output shaft 1 can be adjusted.

[0042] The output shaft 1 has a mounting part 13 at one end near the second gear 14. The mounting part 13 is used to connect with external equipment to output torque to the outside.

[0043] In other embodiments, the transmission gear 5 may be omitted, and the first gear 21 may be directly engaged with the second gear 14, achieving the same technical effect.

[0044] Please refer to Figure 1 The housing 3 is provided with a receiving groove 31, and the output shaft 1 is rotatably inserted through the bottom of the receiving groove 31. The damping component and the adjustment assembly 4 are disposed in the receiving groove 31. By providing the receiving groove 31, the damping component and the adjustment assembly 4 can be housed inside, avoiding direct exposure to the outside, and thus providing a certain degree of protection for the damping component and the adjustment assembly 4.

[0045] 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 apparatus 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 apparatus. 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 apparatus that includes said element.

[0046] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can be referred to each other.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An adjustable damping structure, characterized by, include: Output shaft; A drive motor, connected to the output shaft, is used to drive the output shaft to rotate; A damping element is mounted on the output shaft to generate friction with the output shaft when it rotates; The adjustment assembly includes a spring, an anti-rotation washer, and a locking nut sequentially mounted on the output shaft. The damping element is located on the side of the spring away from the anti-rotation washer. The surfaces of the anti-rotation washer and the locking nut are provided with interlocking anti-rotation teeth. The output shaft is provided with threads that cooperate with the locking nut.

2. The tunable damping structure of claim 1, wherein, The anti-rotation toothed part has an alternating concave-convex wave-shaped structure.

3. The tunable damping structure of claim 1, wherein, The output shaft has a stepped portion, and the damping element is located between the stepped portion and the spring.

4. The tunable damping structure of claim 1, wherein, The output shaft has two flat portions on both sides, and the anti-rotation washer has a waist-shaped hole that mates with the output shaft.

5. The tunable damping structure of claim 4, wherein, Washers are connected to both sides of the spring, and the washers are provided with waist-shaped holes that mate with the output shaft.

6. The tunable damping structure of claim 1, wherein, It also includes a housing, on which the output shaft and drive motor are mounted.

7. The tunable damping structure of claim 6, wherein, The output end of the drive motor is fitted with a first gear, and the output shaft is fitted with a second gear. A transmission gear is provided between the first gear and the second gear, and the transmission gear meshes with the first gear and the second gear respectively.

8. The tunable damping structure of claim 6, wherein, The housing is provided with a receiving groove, the output shaft is rotatably inserted through the bottom of the receiving groove, and the damping element and the adjustment assembly are disposed in the receiving groove.

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