Connecting Seat for Mirror Bracket, Mirror Assembly and Head-Up Display Device

Abstract

Embodiments of the present disclosure provide a connecting seat for a mirror bracket, a mirror assembly, and a head-up display device. The mirror bracket is used to support a mirror and includes a rotating shaft. The mirror bracket drives the mirror to rotate by the rotation of the rotating shaft. The connecting seat includes: a body; a first clamping portion and a second clamping portion oppositely arranged on the body; wherein, the first clamping portion and the second clamping portion are configured to be elastically deformed by being squeezed by the rotating shaft inserted therebetween, and the rotating shaft is held between the first clamping portion and the second clamping portion by an elastic force.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of head-up display, and particularly to a connecting seat for a mirror bracket, a mirror assembly, and a head-up display device. Background Art

[0002] A head-up display (HUD) device is an advanced in-vehicle navigation and information display device that can project map navigation, driving assistance information, etc. directly onto the windshield or a dedicated display screen in front of the driver. The application of HUD effectively improves the driver's perception ability of the driving environment, thereby enhancing driving safety and convenience. Currently, HUD has been widely used in the field of intelligent vehicles and has become a standard or optional device for many vehicle models.

[0003] The imaging unit of HUD is the core component of the system, and its function is to accurately project image information onto the display screen or the windshield. The stability of the imaging unit directly affects the clarity and position accuracy of the projected image. In the prior art, the support method of the imaging unit usually adopts a fixed structure with shaft-hole fit. By setting a shaft-hole fit between the imaging unit and the support device, the basic fixing requirements can be met to a certain extent. However, this structure is difficult to effectively buffer external vibrations during dynamic use, and its protection and position-holding capabilities for the imaging unit are relatively limited.

[0004] The existing shaft-hole fit support method is difficult to fully eliminate the influence of vibrations on the stability of the imaging unit in the dynamic use scenario of complex road conditions, which may lead to poor imaging effects. In addition, the adjustment range of this fixing method is limited, and higher operation difficulties may be faced during installation and maintenance, reducing production efficiency and use convenience. Therefore, the prior art needs to optimize the imaging quality and system reliability of HUD. Summary of the Invention

[0005] In view of this, embodiments of the present disclosure expect to provide a connecting seat for a mirror bracket, a mirror assembly, and a head-up display device. The elastic clamping method of this connecting seat can effectively eliminate the physical clearance problem between the connecting seat and the connecting head, thereby solving problems such as connection looseness, vibration influence, and wear existing in the existing connection methods.

[0006] The technical solution of the embodiments of the present disclosure is implemented as follows:

[0007] In a first aspect, embodiments of the present disclosure provide a connecting seat for a mirror bracket, the mirror bracket being used to support a mirror and including a rotating shaft, the mirror bracket driving the mirror to rotate through the rotation of the rotating shaft, the connecting seat including:

[0008] A body;

[0009] A first clamping portion and a second clamping portion oppositely arranged on the body;

[0010] Wherein, the first clamping portion and the second clamping portion are arranged to be elastically deformed by being squeezed by the rotating shaft inserted between them, and the rotating shaft is held between the first clamping portion and the second clamping portion by an elastic force.

[0011] In some alternative examples, the first clamping portion and the second clamping portion are arranged such that the difference between the elastic force of the first clamping portion and the elastic force of the second clamping portion is equal to the difference between the force of the motor assembly for driving the rotation of the mirror bracket and the force of the cooperation between the motor assembly and the mirror bracket.

[0012] In some alternative examples, the elastic force of the first clamping portion is greater than the impact force applied by the rotating shaft on the first clamping portion, and the elastic force of the second clamping portion is greater than the impact force applied by the rotating shaft on the second clamping portion, wherein the impact force applied on the first clamping portion and the impact force applied on the second clamping portion are generated on the rotating shaft due to the vibration of the motor assembly.

[0013] In some alternative examples, the first clamping portion and the second clamping portion are respectively in a plate shape with one end connected to the body and the other end suspended.

[0014] In some alternative examples, the body is in a U shape and includes a first branch and a second branch opposite to each other, wherein the first clamping portion and the second clamping portion are respectively connected to opposite sides of the first branch and the second branch.

[0015] In some alternative examples, the suspended end of the first clamping portion extends in a direction towards the second branch at a first angle with the first branch;

[0016] The suspended end of the second clamping portion extends in a direction towards the first branch at a second angle with the second branch.

[0017] In some alternative examples, the first clamping portion is located above the second clamping portion in the vertical direction, and when the first clamping portion and the second clamping portion do not undergo elastic deformation, the first angle is smaller than the second angle.

[0018] In some alternative examples, at least one of the first clamping portion and the second clamping portion is formed with a limiting portion for limiting the rotating shaft to leave the connecting seat.

[0019] In some alternative examples, the limiting portion is formed as a concave portion matching the shape of a part of the rotating shaft.

[0020] In some alternative examples, the connecting seat is integrally formed.

[0021] In a second aspect, an embodiment of the present disclosure provides a mirror assembly, which includes:

[0022] A mirror bracket for supporting a mirror, the mirror bracket includes a rotating shaft, and the mirror bracket drives the mirror to rotate by the rotation of the rotating shaft;

[0023] A connecting seat for the mirror bracket according to the first aspect.

[0024] In some alternative examples, the rotating shaft is formed as a sphere.

[0025] In a third aspect, an embodiment of the present disclosure provides a head-up display device, which includes the mirror assembly according to the second aspect.

[0026] The embodiment of the present disclosure provides a connecting seat for a mirror bracket, a mirror assembly, and a head-up display device. The connecting seat for the mirror bracket realizes the tight clamping of the rotating shaft through the elastic deformation and recovery characteristics of the first clamping portion and the second clamping portion. Compared with the traditional fixing method, the connecting seat effectively eliminates the gap problem between the connecting seat and the rotating shaft, prevents the rotating shaft from shifting or jittering in a dynamic environment, thereby significantly improving the imaging quality and stability of the HUD device, and at the same time enhancing the reliability of the connection structure. In addition, the elastic characteristics of the first clamping portion and the second clamping portion also have the ability to absorb shocks when the rotating shaft is subjected to external forces or vibrations. By absorbing shock vibrations, the connecting seat effectively reduces the direct friction between the rotating shaft and the connecting seat, not only prolongs the service life of the rotating shaft and the connecting seat, but also reduces the wear risk caused by impact between the two. At the same time, the buffering effect of the elastic clamping portion also reduces the noise caused by vibrations, thereby improving the silent performance during the operation of the HUD device and enhancing the user experience. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of a part of the HUD device provided by the embodiment of the present disclosure.

[0028] Figure 2 is Figure 1 A schematic diagram of a part of the HUD device.

[0029] Figure 3 It is a schematic diagram of a part of the connecting seat for the mirror bracket, the mirror assembly, and the head-up display device provided by the embodiment of the present disclosure.

[0030] Figure 4 It is a schematic diagram of a part of the mirror assembly provided by the embodiment of the present disclosure.

[0031] Figure 5 A perspective view of the connection base provided by an embodiment of the present disclosure.

[0032] Figure 6 A front view of the connection base provided by an embodiment of the present disclosure.

[0033] Figure 7 A top view of the connection base provided by an embodiment of the present disclosure. Detailed implementation manners

[0034] The present disclosure will be described in detail below with reference to the accompanying drawings and by means of exemplary embodiments. It should be noted that the following detailed description of the present disclosure is for illustrative purposes only and is by no means a limitation on the present disclosure.

[0035] It should be noted that, for the sake of clarity, not all features of specific embodiments are described and illustrated in the specification and the drawings. Moreover, to avoid unnecessary details obscuring the technical solutions of interest in the present disclosure, only the device structures closely related to the technical solutions of the present disclosure are described and illustrated in the specification and the drawings, while other details that are not closely related to the technical content of the present disclosure and are known to those skilled in the art are omitted.

[0036] The angle adjustment of the mirror in the HUD device is crucial for ensuring the clarity, accuracy of the image, and the adaptability of the driver's perspective. To meet the needs of different drivers and maintain image stability during the dynamic driving of the vehicle, the angle adjustment of the mirror is usually achieved by combining a mechanical structure and an electronic control system.

[0037] See Figure 1 , the HUD device 100 provided by some embodiments of the present disclosure may include a mirror 101, a mirror bracket 102, a motor assembly 103, and a worm and worm gear mechanism 104. The mirror 101 may be connected to other components of the HUD device 100 through the mirror bracket 102. The mirror bracket 102 can not only provide support for the mirror 101, but also allow the mirror 101 to rotate around a predetermined axis for angle adjustment. The worm and worm gear mechanism 104 may be directly connected to the motor assembly 103. The motor assembly 103 may drive and control the rotation of the mirror bracket 102 and the mirror 101 via the worm and worm gear mechanism 104. The motor assembly 103 may be, for example, a stepper motor or a servo motor. As an alternative example, a gear mechanism may also be used to replace the worm and worm gear mechanism to transmit motion and achieve the rotation of the mirror bracket 102 and the mirror 101. The advantage of the worm and worm gear mechanism 104 is that it can not only provide a stable transmission ratio, but also has a self-locking characteristic, which can lock the mirror angle after adjustment to prevent the angle from returning or shifting due to vehicle vibration.

[0038] To allow for the angular adjustment of the mirror 101, the mirror bracket 102 is supported in a rotatable manner. As Figure 2 shown, the mirror bracket 102 has a rotating shaft 102A extending from its side edge. The rotating shaft 102A can be inserted into the mounting hole 102B to form a rotational support for the mirror bracket 102. The mounting hole 102B can be formed in a component that provides support for the mirror 101 and the mirror bracket 102. For ease of assembly and use, a clearance fit is adopted between the rotating shaft 102A and the mounting hole 102B. This setting enables the rotating shaft 102A to be conveniently inserted into the mounting hole 102B while having a certain degree of rotational freedom. However, due to the existence of the clearance, there is always a certain space between the outer peripheral surface of the rotating shaft 102A and the inner peripheral surface of the mounting hole 102B.

[0039] During actual use, especially when adjusting the angle of the mirror 101 to optimize the imaging effect, the HUD device 100 exposes some problems. For example, when adjusting the angle of the mirror 101, image jitter and relatively high noise are prone to occur. Moreover, after using for a period of time, both the rotating shaft 102A and the mounting hole 102B show a certain degree of wear, shortening the service life.

[0040] In view of the above situation, the inventor found through research and analysis that the shaft-hole fit at the mirror bracket 102 is the main cause of the above problems. Specifically, when the motor assembly 103 starts to work, the vibration generated by the motor assembly 103 will be transmitted to the mirror bracket 102 via the worm and worm gear mechanism 104, and thus also transmitted to the rotating shaft 102A. Due to the clearance between the rotating shaft 102A and the mounting hole 102B, the vibration will cause the rotating shaft 102A to wobble within the mounting hole 102B. As the wobbling amplitude increases, the outer peripheral surface of the rotating shaft 102A will repeatedly collide with the inner wall of the mounting hole 102B.

[0041] This kind of collision will not only exacerbate the damage to the rotating shaft 102A and the mounting hole 102B, affecting the structural integrity of both, but also generate noise. In addition, during the collision process, the reaction force exerted by the mounting hole 102B on the rotating shaft 102A will be transmitted to the mirror bracket 102, and thus further act on the mirror 101. This reaction force may cause the angles of the mirror bracket 102 and the mirror 101 to shift or jitter, ultimately affecting the image stability and accuracy projected by the HUD device. In particular, due to the existence of assembly tolerances, the rotating shaft 102A may be inserted into the mounting hole 102B in a concentric manner. This means that the rotating shaft 102A has a clearance with the inner circumferential wall of the mounting hole 102B in its entire circumferential direction. This makes the mirror 101 more vulnerable to vibration, thereby causing image jitter.

[0042] In view of this, embodiments of the present disclosure provide a connector seat for a mirror bracket, a mirror assembly, and a head-up display device. The elastic clamping method of the connector seat can effectively eliminate the physical gap problem between the connector seat and the connector head, thereby solving problems such as connection looseness, vibration influence, and wear existing in the existing connection methods.

[0043] The following describes the connector seat for a mirror bracket, the mirror assembly, and the head-up display device provided by the embodiments of the present disclosure in conjunction with specific embodiments.

[0044] See Figure 3 , some embodiments of the present disclosure provide a connector seat 1 for a mirror bracket 102. The mirror bracket 102 can be used to support a mirror 101 and includes a rotating shaft 102A. The mirror bracket 102 drives the mirror 101 to rotate by the rotation of the rotating shaft 102A.

[0045] The connector seat 1 may include a body 11, and a first clamping portion 12 and a second clamping portion 13 oppositely arranged on the body 11. The first clamping portion 12 and the second clamping portion 13 are arranged to be elastically deformed by being squeezed by the rotating shaft 102A that can be inserted between them, and the rotating shaft 102A is held between the first clamping portion 12 and the second clamping portion 13 by elastic force.

[0046] The body 11, as the basic structure of the connector seat 1, can provide reliable support for the first clamping portion 12 and the second clamping portion 13, ensuring the structural stability of the entire connector seat 1 and the realization of the clamping function.

[0047] The first clamping portion 12 and the second clamping portion 13 are arranged on the connector seat 1 in a relative manner, forming a clamping area therebetween for accommodating the rotating shaft 102A and realizing clamping and fixing thereof.

[0048] In the case where the rotating shaft 102A has not been inserted into the connector seat 1, the first clamping portion 12 and the second clamping portion 13 may be in an initial state without being stretched or compressed. When the rotating shaft 102A is inserted into the clamping area, its outer peripheral surface will simultaneously contact the opposite two surfaces of the first clamping portion 12 and the second clamping portion 13, and apply a squeezing force to the first clamping portion 12 and the second clamping portion 13, causing them to elastically deform in a direction away from each other. In this process, the first clamping portion 12 and the second clamping portion 13 have elastic force due to the elastic characteristics of the material, and thus always tend to return to the initial state. The direction of this elastic force is towards each other, acting on both sides of the rotating shaft 102A respectively, thereby providing a uniform clamping force to firmly hold the rotating shaft 102A in the clamping area and effectively preventing it from loosening or shifting in a dynamic environment.

[0049] The elastic properties of the first clamping portion 12 and the second clamping portion 13 provide good dynamic stability for the connecting base 1. In the case of external vibration, the clamping portion can absorb vibration or impact energy, reduce the direct impact of external force on the rotating shaft 102A, and significantly improve the angular stability of the reflector bracket and the reflector, thereby ensuring the clarity and accuracy of the HUD projection image.

[0050] In addition, the first clamping portion 12 and the second clamping portion 13 clamp the rotating shaft 102A through flexible contact, effectively avoiding the impact wear problem caused by the gap in the traditional rigid matching mode, and reducing the noise generated during the vibration transmission process. This low-noise design significantly improves the quietness of the HUD device and provides users with a more comfortable use experience.

[0051] The deformation capacity of the first clamping portion 12 and the second clamping portion 13 and the distance therebetween can be set according to the size of the rotating shaft 102A, so that the connecting seat 1 has high adaptability and convenient assembly. The first clamping portion 12 and the second clamping portion 13 can adapt to the radial size of the rotating shaft within a certain range. Moreover, the installation of the rotating shaft 102A can be completed by simply inserting it into the clamping area, without the need for additional adjustment or complicated operations.

[0052] In addition, the flexible first clamping portion 12 and the second clamping portion 13 can effectively relieve the contact pressure between the rotating shaft 102A and each clamping portion, reducing the damage to the material caused by hard collision. Furthermore, the elastic force of the first clamping portion 12 and the second clamping portion 13 has good long-term stability and is not prone to failure due to frequent use, further enhancing the reliability and durability of the connecting seat 1.

[0053] The embodiment of the present disclosure provides a connection base 1 for a reflector bracket. The connection base 1 achieves a tight clamping of the rotating shaft 102A through the elastic deformation and recovery characteristics of the first clamping portion 12 and the second clamping portion 13. Compared with the traditional fixing method, the connection base 1 effectively eliminates the gap problem between the connection base 1 and the rotating shaft 102A, prevents the rotating shaft 102A from offsetting or shaking in a dynamic environment, thereby significantly improving the imaging quality and stability of the HUD device, and enhancing the reliability of the connection structure. In addition, the elastic characteristics of the first clamping portion 12 and the second clamping portion 13 also have the ability to absorb shock when the rotating shaft 102A is subjected to external force or vibration. By absorbing the shock of vibration, the connection base 1 effectively reduces the direct friction between the rotating shaft 102A and the connection base 1, which not only prolongs the service life of the rotating shaft 102A and the connection base 1, but also reduces the risk of wear caused by the impact of the two. At the same time, the buffering effect of the elastic clamping portion also reduces the noise caused by vibration, thereby improving the silent performance of the HUD device during operation and improving the user experience.

[0054] In some embodiments of the present disclosure, the first clamping portion 12 and the second clamping portion 13 are arranged such that the difference between the elastic force of the first clamping portion 12 and the elastic force of the second clamping portion 13 is equal to the difference between the force of the motor assembly 103 for driving the rotation of the mirror bracket 102 and the force of the cooperation between the motor assembly 103 and the mirror bracket 102.

[0055] Referring to Figure 4 , the motor assembly 103 may include a motor 103A, a motor bracket 103B, and a pressing member 103C. The power generated by the motor 103A may be transmitted to the mirror bracket 102 via a worm and worm gear mechanism 104. The worm 104A of the worm and worm gear mechanism 104 may be directly connected to the power output shaft of the motor 103A, and the worm gear 104B of the worm and worm gear mechanism 104 is fixed to the mirror bracket 102, such that when the worm 104A is driven by the motor 103A to rotate about an axis to drive the worm gear 104B engaged therewith to rotate, the mirror bracket 102 may be driven by the worm gear 104B to rotate about the rotation shaft 102A, thereby realizing the angle adjustment of the mirror 101 and the mirror bracket 102.

[0056] To ensure the full engagement of the worm 104A and the worm gear 104B, the motor 103A is rotatably supported by the motor bracket 103B, and a pressing member 103C for pushing the worm 104A toward the worm gear 104B is provided below the worm 104A. The pressing member 103C may be made of an elastic material and may be in the form of, for example, a spring sheet. One end of the pressing member 103C may be fixed to other components as a support point of the pressing member 103C, and the other end may act on the lower part of the worm 104A. When the motor 103A rotates relative to the motor bracket 103B such that the worm 104A connected to the motor 103A presses against the pressing member 103C, the pressing member 103C undergoes elastic deformation and continuously pushes the worm 104A upward due to its own elastic force to force the worm 104A to engage with the worm gear 104B located above it. Therefore, the pressing member 103C also bears a part of the gravity of the motor 103A.

[0057] The engagement of the worm 104A and the worm gear 104B causes the gravity of the mirror 101 and the mirror bracket 102 to act on the worm and worm gear mechanism 104 at least partially, and ultimately act on the pressing member 103C. Therefore, the pressing member 103C can offset at least a part of the gravity of the mirror 101 and the mirror bracket 102.

[0058] Since the meshing position of the worm 104A and the worm gear 104B changes when adjusting the angle of the reflecting mirror 101, the distribution mode of the gravity of the reflecting mirror 101 and the mirror bracket 102 between the connecting seat 1 and the motor assembly 103 also changes. As an example, when the worm 104A and the worm gear 104B are in a specific meshing position, the gravity of the reflecting mirror 101 and the mirror bracket 102 will be entirely borne by the pressing member 103C of the motor assembly 103, and the connecting seat 1 will no longer bear the gravity of the reflecting mirror 101 and the mirror bracket 102. In addition to gravity, when the motor 103A starts to operate, the frictional force generated by the motor 103A will also partially act on the pressing member 103C.

[0059] Based on the above situations, it can be determined that for the first clamping portion 12 and the second clamping portion 13 of the connecting seat 1, the elastic forces of the two should be different. Since the vertical arrangement of the first clamping portion 12 and the second clamping portion 13 and the external forces they bear are different, in order to ensure that they can apply sufficient clamping force to the rotating shaft 102A under any conditions and firmly hold it within the clamping area, it is necessary to design the elastic forces of the two differently. The difference between the elastic force of the first clamping portion 12 and the elastic force of the second clamping portion 13 can be equal to the force difference F between the motor assembly 103 and the mirror bracket 102 in cooperation. Δ And it can be obtained by the following formula:

[0060]

[0061] where W is the elastic force of the pressing member; f is the frictional force of the motor; F 马 is the gravity of the motor acting on the pressing member; F 反 is the component of the gravity of the mirror bracket and the reflecting mirror acting on the worm and worm gear mechanism.

[0062] It should be noted that according to the above formula, it can be seen that the calculation of F Δ involves a key parameter F 反 , that is, the component of the gravity of the mirror bracket and the reflecting mirror acting on the worm and worm gear mechanism. However, it should be noted that the reflecting mirror 101 does not directly contact the connecting seat 1, but is supported by the mirror bracket 102. Therefore, the gravity of the reflecting mirror 101 will not be directly transmitted to the connecting seat 1, but via the mirror bracket 102, the gravity of the reflecting mirror 101 and the mirror bracket 102 acts on the worm and worm gear mechanism and the connecting seat 1 together.

[0063] Specifically, this force transmission process makes the part of the force applied to the worm and worm gear mechanism finally transmitted to the motor assembly 103 through mechanical transmission. This indicates that F ΔActually, it reflects the force difference generated by the gravity distribution during the cooperation between the motor assembly 103 and the mirror bracket 102. This force difference is a key parameter for measuring the balancing force that the connecting seat 1 needs to bear in the whole structure.

[0064] Define the calculation relationship of F Δ , which can not only optimize the design of the connecting seat 1, but also provide data support for ensuring the stability and reliability of the whole device. By reasonably designing the structure and material of the connecting seat 1 to ensure that it can withstand and balance the force represented by F Δ , the mechanical performance of the system can be effectively improved, the risk of structural deformation or failure can be reduced, and finally the efficient operation of the device can be realized.

[0065] See Figure 4 , when the pusher 103C is plate-shaped, the elastic force W of the pusher in the above formula can be obtained by the following formula:

[0066]

[0067] where B is the width of the pusher; H is the thickness of the pusher; E is the elastic modulus of the material of the pusher; L is the length of the force arm when the pusher exerts an elastic force on the motor ; δ is the deformation amount and , where c is the size of the deformation angle MC of the pusher.

[0068] When the first clamping part 12 and the second clamping part 13 are arranged up and down in the vertical direction, the lower second clamping part 13 needs to additionally bear the gravity of the mirror bracket 102 and the mirror 101 transmitted by the rotating shaft 102A and part of the acting force of the motor assembly 103. Therefore, the elastic force design of the second clamping part 13 needs to be greater than that of the upper first clamping part 12, and the elastic force difference is to resist these additional forces. Through this differential elastic force distribution, it can effectively ensure that the clamping force of the two clamping parts on the rotating shaft is always at a sufficient level.

[0069] This design of differential elastic force has many advantages. First of all, it can ensure that the first clamping part 12 and the second clamping part 13 always exert a stable clamping force on the rotating shaft 102A in a dynamic environment, and can prevent the rotating shaft from loosening or shifting no matter how the external force changes. Secondly, by increasing the elastic force of the second clamping part 13, it can bear more loads, thus avoiding excessive deformation or failure of the first clamping part 12 due to overloading. In addition, this design provides a sufficient safety margin for the clamping part structurally, avoiding reverse deformation or fracture caused by the clamping part being unable to bear the external force transmitted by the rotating shaft.

[0070] During the process of adjusting the mirror 101 and the mirror bracket 102, due to the vibration of the motor assembly 103, an impact force will be transmitted to the connector 1 through the rotating shaft 102A. This impact force will act on the first clamping portion 12 and the second clamping portion 13 of the connector 1 respectively, thus posing higher requirements for the stability of the clamping portions.

[0071] In order to address the above situation, in some embodiments of the present disclosure, the elastic force of the first clamping portion 12 is greater than the impact force exerted on the first clamping portion 12 by the rotating shaft 102A, and the elastic force of the second clamping portion 13 is greater than the impact force exerted on the second clamping portion 13 by the rotating shaft 102A, where the impact force exerted on the first clamping portion 12 and the impact force exerted on the second clamping portion 13 are generated on the rotating shaft 102A due to the vibration of the motor assembly 103.

[0072] The impact forces exerted on the first clamping portion 12 and the second clamping portion 13 mainly come from the vibration during the operation of the motor assembly 103, and these vibrations are transmitted to the clamping portions through the rotating shaft 102A. Designing the elastic force of the clamping portions to be greater than the impact force transmitted by the rotating shaft can effectively avoid the problem that any clamping portion undergoes insufficient elastic deformation or loss of clamping force due to vibration and impact.

[0073] By reasonably setting the elastic force of the clamping portions, not only can the impact energy of the vibration transmitted to the rotating shaft be effectively absorbed and alleviated, but also it can ensure that the rotating shaft 102A always remains stable within the clamping area, avoiding loosening or displacement in a dynamic usage environment. This design is particularly suitable for HUD systems that require high precision and high stability, and can improve the operating reliability and imaging effect of the device.

[0074] There can be many specific implementation ways for the two clamping portions of the connector 1. For example, they can be compression springs, torsion springs, etc. In some embodiments of the present disclosure, the two clamping portions can adopt the form of elastic sheets. Specifically, the first clamping portion 12 and the second clamping portion 13 can each be in the form of a plate connected at one end to the body and suspended at the other end.

[0075] See Figure 5 , both the first clamping portion 12 and the second clamping portion 13 are made of elastic materials and are designed in the form of a generally rectangular plate. The plate-shaped clamping portion has a simple and effective structural form, providing a larger contact area with the rotating shaft 102A through its larger surface area. This design not only increases the distribution area of the clamping force but also improves the distribution uniformity of the overall structure, thereby being able to exert a continuous and stable clamping force on the rotating shaft 102A.

[0076] The first end 12A of the first clamping portion 12 is fixedly connected to the body 11 to provide stable support. Its opposite second end 12B is in a suspended state and has a space for free elastic deformation. Similarly, the first end 13A of the second clamping portion 13 is fixedly connected to the body 11, and its opposite second end 13B is also in a suspended state. The suspended design provides the first clamping portion 12 and the second clamping portion 13 with the ability to elastically deform. When the rotating shaft 102A is inserted into the clamping area defined by the two clamping portions and an extrusion force is applied to the clamping portions, the suspended ends of the first clamping portion 12 and the second clamping portion 13 will elastically deform in a direction away from each other, and their fixed ends provide necessary support through connection with the body 11.

[0077] After elastic deformation occurs, due to the elastic characteristics of the material, the two clamping portions always tend to return to their initial shapes. This recovery tendency enables the two clamping portions to apply a continuous and stable clamping force to the rotating shaft 102A located on their recovery path, thereby firmly fixing the rotating shaft 102A within the clamping area. The stability of this clamping force stems from the recovery characteristics of the elastic material, and it can maintain a relatively constant clamping effect even under repeated deformation.

[0078] In addition, the suspended plate-shaped clamping portion design also endows it with excellent seismic performance. In a vibrating environment, the two clamping portions can effectively buffer the external force through elastic deformation and absorb the vibration energy transmitted to the rotating shaft 102A and the mirror bracket 102. This design not only significantly reduces the problems of loosening or displacement of the rotating shaft caused by vibration, but also further enhances the imaging stability of the HUD system in dynamic usage scenarios, providing users with a more reliable usage experience.

[0079] In some embodiments of the present disclosure, referring to Figure 6 , the body 11 can be U-shaped and can include a first branch 11A and a second branch 11B that face each other. Among them, the first clamping portion 12 and the second clamping portion 13 are respectively connected to the opposite sides of the first branch 11A and the second branch 11B to provide stable support for the two clamping portions through the structure of the U-shaped body.

[0080] The advantage of the U-shaped body is to provide reliable support and good structural stability. The first branch 11A and the second branch 11B provide independent force-bearing supports for the two clamping portions, making it difficult for the clamping portions to undergo overall displacement or deformation when subjected to external forces, ensuring the accuracy of the clamping force direction. In addition, this arrangement ensures that the first clamping portion 12 and the second clamping portion 13 have sufficient space to allow a certain degree of elastic deformation and facilitate applying a stable clamping force to the rotating shaft 102A.

[0081] The impact resistance is also a major advantage of the U-shaped body. When the rotating shaft 102A is subjected to an external impact, the first clamping portion 12 and the second clamping portion 13 will absorb part of the impact energy through elastic deformation, and at the same time evenly transfer the remaining impact force to the two branches of the U-shaped body. This design can significantly reduce the damage to a single clamping portion caused by local pressure, extend the service life of the clamping portion, and improve the durability of the overall structure.

[0082] In addition, the U-shaped structure also optimizes the convenience and accuracy of assembly. The rotating shaft 102A can be directly inserted into the clamping area through the opening of the U-shaped body, and the U-shaped frame can naturally guide the rotating shaft to align with the first clamping portion 12 and the second clamping portion 13. This design not only simplifies the assembly process, reduces the operation difficulty, but also ensures the accuracy of the insertion position of the rotating shaft, further improving the assembly efficiency and reliability.

[0083] In some embodiments of the present disclosure, referring to Figure 6 , the suspended end of the first clamping portion 12, that is, the second end portion 12B of the first clamping portion 12, extends in the direction of the second branch portion 11B in a direction forming a first angle A1 with the first branch portion 11A; the suspended end of the second clamping portion 13, that is, the second end portion 13B of the second clamping portion 13, extends in the direction of the first branch portion 11A in a direction forming a second angle A2 with the second branch portion 11B.

[0084] The mechanical properties of the clamping area can be further optimized through the inclined design of the first clamping portion 12 and the second clamping portion 13. The first clamping portion 12 is inclined along a direction forming a first angle A1 with the body 11 and extends towards the second clamping portion 13; similarly, the second clamping portion 13 is inclined along a direction forming a second angle A2 with the body 11 and extends towards the first clamping portion 12. This makes the suspended end portions of the first clamping portion 12 and the second clamping portion 13 respectively point to the clamping area, forming a symmetric or complementary extension relationship, so as to ensure that the elastic forces exerted by the two clamping portions are symmetrically distributed in direction.

[0085] The setting of the inclination angle enables the elastic forces of the two clamping portions to be adjusted according to requirements. When parameters such as material, elastic coefficient, and thickness are determined, by increasing the angle between each of the two clamping portions and the body 11, the elastic deformation range of the clamping portion can be increased, thereby increasing the elastic force, which is suitable for situations where a higher clamping force is required; on the contrary, by reducing the angle, the elastic force of the clamping portion can be reduced, which is suitable for situations where a smaller clamping force is required but more sensitivity is needed. By precisely adjusting the angle size, precise control of the elastic force can be achieved to meet the performance requirements in different usage environments.

[0086] The symmetric or complementary characteristics of the inclined extension of the first clamping portion 12 and the second clamping portion 13 help to improve the uniformity and stability of the force on the rotating shaft within the clamping area. The opposite restoring forces applied by the two clamping portions to the rotating shaft 102A respectively avoid the problem of excessive force on one side, can act evenly on both sides of the rotating shaft, effectively protect the surface of the rotating shaft, reduce wear and extend its service life. In addition, the symmetric elastic force distribution can also effectively absorb and disperse the vibration or impact energy in the dynamic environment, prevent the loosening or displacement of the rotating shaft caused by external forces, and thus significantly improve the seismic performance of the HUD device during operation.

[0087] To achieve the differential design of the elastic forces of the two clamping portions, it can be adjusted in various ways. In addition to the above-mentioned angle setting method, the differential elastic force distribution can also be achieved by selecting materials with different elastic moduli, optimizing the shape of the clamping portion or adjusting the length of the suspended end.

[0088] In some embodiments of the present disclosure, referring to Figure 6 , the first clamping portion 12 is located above the second clamping portion 13 in the vertical direction, and in the case where neither of them undergoes elastic deformation, the first angle A1 is smaller than the second angle A2. This design is to cope with the mechanical differences caused by gravity in the vertical arrangement, so as to optimize the functionality and stability of the clamping portion.

[0089] When the first clamping portion 12 and the second clamping portion 13 are installed in an up-and-down arrangement, the second clamping portion 13 needs to additionally bear a part of the gravity of the mirror 101 and the mirror bracket 102 transmitted by the rotating shaft 102A. To ensure that the rotating shaft 102A can be firmly held in the clamping area, the second clamping portion 13 needs to provide a greater elastic force than the first clamping portion 12. By setting the second angle A2 of the second clamping portion 13 to be greater than the first angle A1 of the first clamping portion 12, the second clamping portion 13 can generate a stronger elastic force when being squeezed by the rotating shaft 102A to effectively counteract the additional load caused by gravity.

[0090] In some embodiments of the present disclosure, the elastic forces of the first clamping portion 12 and the second clamping portion 13 arranged up and down in the vertical direction can be related to their sizes, material properties, deformation conditions, and the lever arm of the pushing member 103C of the motor assembly 103 acting on the motor 103A.

[0091] Specifically, referring to Figure 6 , in the case where both the first clamping portion 12 and the second clamping portion 13 are plate-shaped, the elastic force F of the first clamping portion 12 located above a can be obtained by the following formula:

[0092]

[0093] where B is the width of the first clamping portion 12; H is the thickness of the first clamping portion 12; E is the elastic modulus of the material of the first clamping portion 12; L1 is the length of the lever arm l1 when the first clamping portion 12 applies an elastic force to the rotating shaft 102A; δ is the amount of deformation and where a is the magnitude of the first angle A1 between the first clamping portion 12 and the first branch portion 11A.

[0094] In addition, the elastic force F of the second clamping portion 13 located below b can be obtained by the following formula:

[0095]

[0096] where B is the width of the second clamping portion 13; H is the thickness of the second clamping portion 13; E is the elastic modulus of the material of the second clamping portion 13; L2 is the length of the lever arm l2 when the second clamping portion 13 applies an elastic force to the rotating shaft 102A; δ is the amount of deformation and where b is the magnitude of the second angle A2 between the second clamping portion 13 and the second branch portion 11B.

[0097] The inclined design of the clamping portion not only enhances the distribution of the elastic force but also provides a good guiding effect for the insertion of the rotating shaft 102A. In particular, the inclined clamping portion can naturally guide the rotating shaft 102A into the clamping area, reduce the resistance during insertion, and improve the convenience and accuracy of assembly. In addition, referring to Figure 5 , in order to further simplify the insertion process of the rotating shaft 102A, a guiding portion DF is provided at the end of the clamping portion close to the opening of the U-shaped body 11. For example, a ramp-shaped guiding portion DF can be provided at the second end 13B of the second clamping portion 13. This guiding portion can provide a larger spacing at the opening of the U-shaped body 11, making it easier for the rotating shaft 102A to be inserted into the clamping area from the opening.

[0098] The presence of the guiding portion DF not only improves the assembly efficiency but also significantly reduces the alignment difficulty during insertion and reduces the requirement for operation accuracy in assembly. In addition, the larger spacing design also avoids unnecessary friction on the surface of the clamping portion when the rotating shaft is inserted, thereby protecting the surface integrity of the clamping portion and extending its service life.

[0099] In some embodiments of the present disclosure, in order to further enhance the connection stability between the connection seat 1 and the rotating shaft 102A, in addition to the clamping force formed by the cooperation of the two clamping portions and the frictional force with the rotating shaft 102A to achieve the connection, at least one of the first clamping portion 12 and the second clamping portion 13 may further be provided with a limiting portion for limiting the displacement of the rotating shaft 102A relative to the connection seat 1.

[0100] The limiting portion can effectively prevent the rotating shaft 102A from leaving the clamping area by means of a physical stop. Figure 6 and Figure 7 As shown, the first clamping portion 12 may be formed with a first limiting portion 12C, and the second clamping portion 13 may be formed with a second limiting portion 13C. The two limiting portions are respectively designed as concave structures that match the partial outer shape of the rotating shaft 102A. For example, when the rotating shaft 102A is spherical, the inner surface of the limiting portion may be designed as a curved surface so as to precisely fit the surface of the rotating shaft 102A.

[0101] The design of the limiting portion further limits the displacement of the rotating shaft 102A, thereby effectively preventing the rotating shaft 102A from sliding or deflecting in the axial or radial direction under vibration or external force impact. The concave structure of the limiting portion can provide multi-point contact, further dispersing the pressure of the clamping portion on the rotating shaft, reducing the risk of local stress concentration, and improving the reliability and stability of the connection.

[0102] In addition, the arc surface design of the limiting part can maintain a good fit with the surface of the shaft 102A, ensuring the limiting effect while avoiding excessive wear on the shaft surface. For the spherical shaft 102A, the arc surface limiting part provides a more natural support and guidance function, allowing it to maintain flexibility and stability in a dynamic environment. This design is particularly suitable for application scenarios that require frequent angle adjustment or dynamic loads, such as large reflector brackets in HUD devices.

[0103] In some embodiments of the present disclosure, the connection base 1 may be an integrally formed structure. Figure 6 As shown, this design forms a U-shaped body 11 by bending an elastic sheet into a U-shape. Functional structures such as a clamping portion and a limiting portion can be directly formed on the body 11 by stamping, cutting or other processing methods. This integrated design avoids the complexity of splicing multiple parts and the possible structural weakness problems.

[0104] The integrally formed connection base 1 has better material continuity and overall strength. The overall structural integrity of the U-shaped body 11 enhances the support capacity of the clamping part, and exhibits higher strength and stability when subjected to force, and can effectively withstand the weight and external force of the rotating shaft 102A and the reflector 101 and reflector bracket 102 transmitted by it. At the same time, since the clamping part and the limiting part are directly integrally formed by the body, the elastic properties of the material are more uniform and the elastic force distribution is more stable, thereby ensuring the reliability and uniformity of the clamping force, and further improving the positioning accuracy and anti-seismic performance of the rotating shaft 102A.

[0105] In addition, the one-piece molding design significantly simplifies the processing and assembly processes. Through stamping and bending processes, the clamping portion and the restricting portion can be directly formed in a continuous production process without additional assembly steps. This approach reduces the complexity of the production process, improves manufacturing efficiency, and simultaneously reduces manufacturing costs.

[0106] Refer to Figure 5 , for the convenience of connecting the connecting seat 1 to other components, connection holes 14 through which connecting members can pass can be provided on the connecting seat 1. These connection holes provide a reliable fixing interface for the connecting seat 1 and external components, enabling the connecting seat to be more firmly integrated into the HUD device or other systems. In addition, in order to avoid affecting the assembly efficiency due to structural interference during installation and operation, some materials can be removed from non-critical parts of the connecting seat 1, and it can be designed into a partially hollowed-out shape.

[0107] This partially hollowed-out design not only retains the basic functions and strength of the connecting seat 1 but also has the advantage of reducing weight. By reasonably removing materials that do not affect the structural integrity and elastic properties, the connecting seat 1 not only reduces its own weight but also optimizes the material utilization rate. This lightweight design has a positive significance for improving the performance of the entire system. Especially in the HUD device, reducing the weight of the connecting seat can reduce the vibration transmission efficiency and further improve the dynamic stability.

[0108] In addition, the hollowed-out design can also enhance the appearance simplicity and heat dissipation performance of the connecting seat. In some complex applications, the hollowed-out structure also helps to reduce heat accumulation.

[0109] Some embodiments of the present disclosure also provide a mirror assembly 2. Refer to Figure 4 , the mirror assembly 2 may include: a mirror bracket 102 for supporting the mirror 101 and the connecting seat 1 for the mirror bracket described above. The mirror bracket 102 may include a rotating shaft 102A. The mirror bracket 102 can drive the mirror 101 to rotate by the rotation of the rotating shaft 102A.

[0110] Some embodiments of the present disclosure also provide a HUD device 100. Refer to Figure 3 , the HUD device 100 may include the mirror assembly 2 described above.

[0111] It should be noted that: among the technical solutions recorded in the embodiments of the present disclosure, they can be arbitrarily combined without conflict.

[0112] As described above, it is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A connecting seat for a mirror bracket, the mirror bracket being used to support a mirror and including a rotating shaft, the mirror bracket driving the mirror to rotate by the rotation of the rotating shaft, characterized in that, The connecting seat includes: A body; A first clamping portion and a second clamping portion oppositely arranged on the body; Wherein, the first clamping portion and the second clamping portion are arranged to be elastically deformed by the rotation shaft inserted between them, and the rotation shaft is held between the first clamping portion and the second clamping portion by elastic force, Wherein, the first clamping portion and the second clamping portion are arranged such that the difference between the elastic force of the first clamping portion and the elastic force of the second clamping portion is equal to the difference between the force of the motor assembly for driving the rotation of the mirror bracket and the force of the cooperation between the motor assembly and the mirror bracket.

2. The connecting seat for the mirror bracket according to claim 1, wherein, The elastic force of the first clamping portion is greater than the impact force exerted by the rotation shaft on the first clamping portion, and the elastic force of the second clamping portion is greater than the impact force exerted by the rotation shaft on the second clamping portion, wherein the impact force exerted on the first clamping portion and the impact force exerted on the second clamping portion are generated on the rotation shaft due to the vibration of the motor assembly.

3. The connecting seat for the mirror bracket according to claim 1 or 2, characterized in that, The first clamping portion and the second clamping portion are respectively in a plate shape with one end connected to the body and the other end suspended.

4. The connecting seat for a mirror bracket according to claim 3, characterized in that, The body is in a U shape and includes a first branch and a second branch opposite to each other, wherein the first clamping portion and the second clamping portion are respectively connected to opposite sides of the first branch and the second branch.

5. The connecting seat for the mirror bracket according to claim 4, characterized in that, The suspended end of the first clamping portion extends in the direction of the second branch in a direction forming a first angle with the first branch; The suspended end of the second clamping portion extends in the direction of the first branch in a direction forming a second angle with the second branch.

6. The connecting base for a mirror bracket according to claim 5, characterized in that The first clamping portion is located above the second clamping portion in the vertical direction, and when the first clamping portion and the second clamping portion are not elastically deformed, the first angle is smaller than the second angle.

7. The connecting seat for a mirror bracket according to claim 3, characterized in that, At least one of the first clamping portion and the second clamping portion is formed with a limiting portion for limiting the rotation shaft to leave the connecting seat.

8. The connecting seat for the mirror bracket according to claim 7, characterized in that, The limiting portion is formed as a concave portion matching a part of the shape of the rotation shaft.

9. A mirror assembly, characterized in that, The mirror assembly includes: A mirror bracket for supporting a mirror, the mirror bracket includes a rotation shaft, and the mirror bracket drives the mirror to rotate by the rotation of the rotation shaft; The connecting seat for the mirror bracket according to any one of claims 1 to 8.

10. The mirror assembly according to claim 9, wherein, The rotation shaft is formed as a sphere.

11. A head-up display device, characterized in that, The head-up display device includes the mirror assembly according to claim 9 or 10.

Images