Limiting component and head-up display device

Abstract

The embodiment of the invention provides a limiting component and a head-up display device. The limiting component is applied to the head-up display device and used for limiting the rotating angles of two rotating shafts arranged on the two sides of a large reflector, and the rotating shafts are provided with limiting protrusions. The limiting component comprises a bearing structure and an elastic sheet structure; the bearing structure is provided with a concave groove for bearing the rotating shaft; the elastic piece structure is used for locking the rotating shaft in the sunken groove, the elastic piece structure is provided with a limiting groove matched with the limiting protrusion, the limiting groove is provided with a limiting position matched with the limiting protrusion, and the limiting position corresponds to a specific preset position of the head-up display device. The specific preset positions are the boundary of the eye box and the parking position of the large reflector.

Description

Technical Field

[0001] This application relates to the field of head-up display technology, and more specifically, to a limiting component and a head-up display device. Background Technology

[0002] In a Head-Up Display (HUD), the large reflector reflects the image light emitted from the image source, altering the light's propagation path. Furthermore, the mirror's curvature converges and adjusts the light, working in conjunction with the display module's optical system. Ultimately, after refraction through the windshield, the light forms a clear and accurate virtual image projection in the driver's field of vision. The angle control and precision of the large reflector directly affect the position and clarity of the projected image. During HUD operation, to ensure the projected image is accurately displayed within the driver's or pilot's field of vision (i.e., the area where the projected image is clearly visible), precise control of the large reflector's rotation angle is essential.

[0003] Currently, in practical applications, there is a lack of effective limiting mechanisms to control the rotation angle of the large reflector, preventing the large reflector from rotating too much and causing the projected image to deviate from the eye box range, thus affecting the usage effect.

[0004] In view of the problems existing in the prior art, it is necessary to provide a new technical solution to solve the technical defects of existing head-up display devices in terms of mirror shaft assembly and stability. Summary of the Invention

[0005] The purpose of this application is to provide a limiting component for a head-up display device and a head-up display device, so as to solve the technical defects of the prior art that the inaccurate limiting leads to projection deviation.

[0006] According to a first aspect of this application, a limiting component is provided. The limiting component is applied to a head-up display device for limiting the rotation angle of two rotating shafts disposed on both sides of a large reflector, wherein the rotating shafts are provided with limiting protrusions; The limiting component includes: a load-bearing structure and a spring-loaded structure; The supporting structure has a recessed groove for supporting the rotating shaft; The spring-loaded structure is used to lock the rotating shaft in the recessed groove. The spring-loaded structure has a limiting groove that cooperates with the limiting protrusion. The limiting groove has an extreme position that cooperates with the limiting protrusion. The extreme position corresponds to a specific preset position of the head-up display device. The specific preset position is the boundary of the eye box and the parking position of the large reflector.

[0007] Optionally, the limiting groove includes a first side perpendicular to the axis of the rotating shaft. Along the extending direction of the first side, the limiting groove is provided with a plurality of scale marks. The limiting protrusion is provided with a first reference line corresponding to the scale marks. During the rotation of the rotating shaft, the rotation angle of the large reflector is determined by the corresponding position of the first reference line and the scale marks.

[0008] Optionally, a plurality of line segments extending along the axial direction of the rotation axis are arranged in an array on the first side, the spacing between adjacent line segments corresponds to the rotation angle value of the large reflector, and the plurality of line segments are defined as a plurality of scale markings. The first reference line is a line that extends along the axial direction of the rotating shaft and passes through the geometric center of the limiting protrusion.

[0009] Optionally, the plurality of scale markings include a first reference scale marking, a second reference scale marking, and a third reference scale marking; the first reference scale marking is located between the second reference scale marking and the third reference scale marking; When the rotating shaft is rotated to align the first reference line with the first reference scale mark, the image light reflected by the large reflector corresponds to the middle eye box area in the eye box; When the rotating shaft is rotated to align the first reference line with the second reference scale mark, the image light reflected by the large reflector corresponds to the lower boundary of the eye box; When the rotating shaft is rotated to align the first reference line with the third reference scale mark, the large reflector is in the parking position.

[0010] Optionally, the line segment is set perpendicular to the first side.

[0011] Optionally, the limiting groove includes a second side portion, the second side portion having at least one tangent line, the direction of the tangent line being parallel to the axial direction of the rotating shaft, and a limiting reference line being provided on the second side portion, the limiting reference line being perpendicular to the second side portion; The limiting protrusion is provided with a second reference line, and the extension direction of the second reference line is consistent with the extension direction of the limiting reference line; when the rotating shaft rotates to the limit position, the limiting reference line and the second reference line are aligned.

[0012] Optionally, the spring structure is provided with a first wing-shaped component and a second wing-shaped component on both sides of the limiting groove for contacting the surface of the rotating shaft, and the first wing-shaped component and the second wing-shaped component are arranged opposite each other in a direction perpendicular to the axial direction of the rotating shaft.

[0013] Optionally, the spring sheet structure is provided with a first flange structure and a second flange structure on both sides of the limiting groove for connecting with the bottom shell and the shoulder of the rotating shaft, and the first flange structure and the second flange structure are arranged opposite to each other along the axial direction of the rotating shaft.

[0014] Optionally, the bearing structure is provided with a first connecting plate and a second connecting plate in a direction perpendicular to the axis of the rotating shaft, and a protrusion is provided on the side of the first connecting plate and / or the second connecting plate away from each other; The spring structure has a connecting arm that is disposed opposite to the first connecting plate or the second connecting plate, and the connecting arm has a connecting hole that mates with the protrusion. The spring structure also includes an end portion disposed at the free end of the connecting arm, the end portion being bent to form an abutment portion that abuts against the first connecting plate or the second connecting plate.

[0015] Optionally, the abutting portion includes a first elastic segment extending in a direction perpendicular to the axial direction of the connecting hole, a first arc segment and a second arc segment connected to the first elastic segment, the bending direction of the first arc segment being opposite to the bending direction of the second arc segment, and the second arc segment abutting against the bottom surface of the protrusion. The abutting portion further includes a second elastic segment connecting the first arc segment and the second arc segment, and the abutting portion further includes a third elastic segment connected to the second arc segment and extending toward the first arc segment, the third elastic segment abutting against the first connecting plate or the second connecting plate.

[0016] Optionally, the third elastic segment has a guide elastic segment formed on the side opposite to the second arc segment, and the guide elastic segment is inclined toward the first arc segment.

[0017] According to a second aspect of this application, a head-up display device is provided. The head-up display device includes a limiting member as described in the first aspect.

[0018] One technical advantage of this application is: In the technical solution provided in this application embodiment, by setting a limiting protrusion on the rotating shaft and opening a limiting groove on the spring structure that matches it and has corresponding limit positions (eye box boundary and parking position), the rotation angle of the rotating shafts on both sides of the large reflector can be limited. This limiting ensures that the light reflected by the large reflector can always accurately fall within the eye box range during the rotation process, avoiding the situation where the light deviates from the eye box area due to excessive rotation angle of the large reflector, thereby providing the driver with clear and stable visual information and improving the reliability and safety of the head-up display device. In addition, with the help of this system, operators can quickly and accurately judge the rotation angle of the large reflector and make corresponding adjustments without the need for complex tools or tedious calculations, greatly improving the convenience and efficiency of operation and effectively reducing the difficulty of operation and error rate.

[0019] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0021] Figure 1 The diagram shown is a structural diagram of the large reflector and the limiting component provided in an embodiment of this application.

[0022] Figure 2 The diagram shown is an exploded view of the mating structure of the large reflector and mating components provided in an embodiment of this application.

[0023] Figure 3 The diagram shown is a structural diagram of the spring structure and the load-bearing component provided in the embodiment of this application.

[0024] Figure 4 The diagram shown is a structural diagram of the spring structure provided in an embodiment of this application.

[0025] Figure 5 The diagram shown is a structural schematic of the matching of the limiting groove and the limiting protrusion provided in an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures: 1. Limiting components; 10. Load-bearing structure; 101. Recessed groove; 102. First connecting plate; 103. Second connecting plate; 104. Protrusion; 11. Spring-loaded structure; 110. Limiting groove; 111. First side; 112. Second side; 113. Third side; 114. Fourth side; 115. Scale marking; 116. First reference scale marking; 117. Second reference scale marking; 118. Third reference scale marking; 119. Limiting reference line; 118. First wing-shaped component; 119. Second wing-shaped component; 120. First flange structure; 121. Second flange structure; 131. Connecting arm; 1310. Connecting hole; 132. Abutting part; 133. First elastic segment; 134. First arc-shaped segment; 135. Second arc-shaped segment; 136. Second elastic segment; 137. Third elastic segment; 138. Guide elastic segment; 2. Large reflecting mirror; 20. Rotating shaft; 201. Limiting protrusion; 202. First reference line; 203. Second reference line; 204. Shoulder; 205. First section of rotating shaft; 206. Second section of rotating shaft; 3. Bottom shell. Detailed Implementation

[0027] Various exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application.

[0028] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0029] Technologies and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such technologies and equipment should be considered part of the specification.

[0030] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0032] Before a head-up display (HUD) device leaves the factory, it is usually necessary to perform calibration work to ensure that the rotation angle of the large reflector in the HUD device is within the range of the eye box.

[0033] However, despite the aforementioned calibration procedures performed before shipment, in actual use scenarios, head-up display devices still require the continuous monitoring of the rotation angle of the large reflector to ensure it remains within a preset safe range, often aided by angle sensors. Unfortunately, current head-up display designs generally lack effective limiting mechanisms to directly prevent excessive increases in the rotation angle of the large reflector.

[0034] In view of this, this application provides a limiting component specifically designed for head-up display devices. This limiting component can precisely limit the rotation angle of the large reflector, preventing it from exceeding the preset safety range, thereby ensuring that the large reflector operates stably within the limited rotation range, and that the reflected light can always accurately fall within the eye box range, improving the overall performance and reliability of the device.

[0035] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0036] Reference Figures 1-5 This application provides a limiting component 1. The main function of the limiting component 1 is to limit the rotation angle of the rotating shafts 20 disposed on both sides of the large reflector 2. The rotating shafts 20 are provided with limiting protrusions 201. In a structural layout where rotating shafts 20 are disposed on both sides of the large reflector 2, one rotating shaft 20 is respectively disposed on each side along the lateral direction of the large reflector. Specifically, the limiting protrusions 201 can be disposed in two ways: one is to provide the limiting protrusion 201 on one of the rotating shafts 20; the other is to provide the limiting protrusion 201 on both rotating shafts 20.

[0037] Reference Figures 1-2 and reference Figure 3 and Figure 5 The limiting component 1 includes: a bearing structure 10 and a spring sheet structure 11; the bearing structure 10 has a recessed groove 101 for bearing the rotating shaft 20; The spring-loaded structure 11 is used to lock the rotating shaft 20 in the recessed groove 101. The spring-loaded structure has a limiting groove 110 that cooperates with the limiting protrusion 201. The limiting groove 110 has an extreme position that cooperates with the limiting protrusion 201. The extreme position corresponds to a specific preset position of the head-up display device. The specific preset position is the boundary of the eye box and the parking position of the large reflector.

[0038] In this embodiment, the limiting component 1 is mainly used in the head-up display device to precisely control and limit the rotation angle of the rotating shafts 20 on both sides of the large reflector 2.

[0039] Specifically, rotating shafts 20 are respectively provided on both sides of the large reflector 2, and each rotating shaft 20 can be provided with a limiting protrusion 201. The limiting component 1 consists of two parts: a supporting structure 10 and a spring structure 11. The supporting structure 10 has a recessed groove 101, which serves to support the rotating shaft 20 and provide a stable placement position for the rotating shaft 20. The spring structure 11 is responsible for firmly locking the rotating shaft 20 in the recessed groove 101, and at the same time, the spring structure 11 has a limiting groove 110 that cooperates with the limiting protrusion 201 on the rotating shaft 20. This limiting groove 110 has a specific limit position, and this limit position corresponds to a specific preset position of the head-up display device. This specific preset position is the boundary of the eye box and the parking position of the reflector. Through this correspondence, the rotation angle of the rotating shaft 20 can be effectively limited.

[0040] This head-up display device includes a pivot 20, a large reflector 2, and a windshield. The main function of the large reflector 2 is to reflect light and project the reflected light onto the windshield; the windshield processes the received light to ultimately form a virtual image.

[0041] During operation, the position of the large reflector 2 is adjusted by rotating the pivot 20. As the position of the large reflector 2 changes, the path of the reflected light also changes, thereby adjusting the position of the virtual image formed on the windshield. Specifically, the virtual image can be located in different positions within the eye box, including the upper eye box position, the lower eye box position, and the middle eye box position.

[0042] Furthermore, there is a correspondence between the rotation angle of the pivot 20 and the position of the virtual image: when the rotation angle of the pivot 20 is small, the virtual image is located in the lower eyelid position of the head-up display (for shorter drivers); when the rotation angle of the pivot 20 is large, the virtual image is located in the upper eyelid position of the head-up display (for taller drivers). In particular, the rotation angle of the pivot 20 corresponding to the upper eyelid position is relatively close to the rotation angle corresponding to the parking position of the large reflector. The parking position of the large reflector mentioned here refers to the position where the large reflector is located when the vehicle is parked.

[0043] In one specific embodiment, for most conventional W-HUDs (windshield head-up displays), the eye box is typically designed in a rectangular shape, with a longer horizontal length to cover the driver's left and right head movement range, and a shorter vertical length to accommodate the driver's need to adjust their sitting posture.

[0044] Reference Figure 5The limiting groove 110 is typically designed as a racetrack-shaped structure. The racetrack-shaped limiting groove 110 has a first side 111 extending along the long axis and a third side 113 opposite to the first side 111, as well as a second side 112 extending along the short axis and a fourth side 114 opposite to the second side 112.

[0045] The connection between the first side 111, the third side 113 and the second side 112 corresponds to the leftmost position of the limiting groove 110, and the connection between the first side 111, the third side 113 and the fourth side 114 corresponds to the rightmost region of the limiting groove 110.

[0046] In this specific embodiment, with a limiting protrusion 201 on the rotating shaft 20 and a limiting groove 110 on the spring structure 11, during the rotation of the rotating shaft 20, when the rotating shaft 20 rotates to the rightmost side of the limiting groove 110, the rotation angle of the rotating shaft 20 is small, corresponding to the extreme position of the lower eye box in the head-up display device. When the rotating shaft 20 rotates to the leftmost side of the limiting groove 110, the rotation angle of the rotating shaft 20 is relatively large, corresponding to the parking position of the large reflector in the head-up display device, that is, the parking position of the large reflector (the extreme position of the non-working state).

[0047] The spring structure 11 is elastic and its shape can be elastically restored. Therefore, when at least a part of the spring structure 11 is fixed (the fixing method is not limited, for example, it can be fixed by fasteners or by abutting against at least a part of the bearing structure 10), the spring structure 11 will deform because at least a part of it is fixed, and will elastically press against the rotating shaft 20 housed in the recess 101 or constrain the rotating shaft 20 in the recess 101 due to the elastic restoring force caused by the deformation.

[0048] Here, the spring structure 11 is also designed to have strong elastic restorability, so as to provide a greater elastic restoring force and thus provide greater pressure on the rotating shaft 20 received in the recessed groove 101, so that the rotating shaft 20 can be locked in the recessed groove 101 by the greater pressure, that is, the rotating shaft 20 is locked at the desired tilt angle. Thus, the locking of the rotating shaft 20 in the recessed groove 101 can be achieved solely by the elastic restorability of the spring structure 11 itself.

[0049] In this case, when it is necessary to position the large reflector 2 at a specific tilt angle, it is only necessary to rotate the rotating shaft 20 to that tilt angle and use the spring plate structure 11 to lock the rotating shaft 20 in the recessed groove 101 at that tilt angle.

[0050] It should be emphasized that in the limiting component provided in this application, the spring structure 11 and the supporting structure 10 are used in cooperation. Specifically, the spring structure 11, by virtue of its elastic deformation characteristics, can apply pressure to the rotating shaft 20 housed in the recessed groove 101 on the supporting structure 10, thereby firmly locking the rotating shaft 20 in the recessed groove 101 and ensuring that the rotating shaft 20 will not come out arbitrarily under normal conditions. At the same time, during the rotation of the rotating shaft 20, the limiting groove 110 opened on the spring structure 11 can effectively limit the rotation angle range of the rotating shaft 20, preventing the rotation angle of the rotating shaft 20 from exceeding the preset range, thereby ensuring the normal functioning of the entire limiting component.

[0051] Therefore, in this embodiment, by providing a limiting protrusion 201 on the rotating shaft 20 and opening a limiting groove 110 on the spring structure 11 that matches it and has a corresponding limit position at the edge of the eye box, the rotation angle of the rotating shafts 20 on both sides of the large reflector 2 can be limited. This limiting ensures that the light reflected by the large reflector 2 can always accurately fall within the eye box range during rotation, avoiding the situation where the light deviates from the eye box area due to excessive rotation angle of the large reflector 2, thereby providing the driver with clear and stable visual information and improving the reliability and safety of the head-up display device.

[0052] Furthermore, by providing a limiting protrusion 201 on the rotating shaft 20 and a limiting groove 110 on the spring structure 11, the rotation angle of the rotating shaft 20 and the setting position of the large reflector can be detected and accurately judged during the assembly of the head-up display device. This ensures that the rotation angle range of the rotating shaft 20 corresponds to the lower eye box boundary of the head-up display device and the parking position of the large reflector, thus solving the problem of human misjudgment. It eliminates the need for complex tools or tedious calculations, greatly improving the convenience and efficiency of operation and effectively reducing the difficulty of operation and error rate.

[0053] According to the embodiments of this application, refer to Figures 1-5 The limiting groove 110 includes a first side 111 perpendicular to the axis of the rotating shaft 20. Along the extending direction of the first side 111, the limiting groove 110 is provided with a plurality of scale marks 115, and the limiting protrusion 201 is provided with a first reference line 202 corresponding to the scale marks 115. During the rotation of the rotating shaft 20, the rotation angle of the large reflector 2 is determined by the corresponding position of the first reference line 202 and the scale marks 115.

[0054] In this embodiment, reference is made to Figures 1-5 The limiting groove 110 includes a first side 111 perpendicular to the axis of the rotating shaft 20. For example, in the case where the limiting groove 110 is runway-shaped, the first side 111 extends along the long axis of the runway-shaped limiting groove 110.

[0055] Reference Figure 5 Along the extending direction of the first side 111, the limiting groove 110 is provided with a number of scale marks 115, for example, the number of scale marks 115 are provided against the edge of the first side 111. At the same time, the limiting protrusion 201 is provided with a first reference line 202 corresponding to the scale marks 115.

[0056] During the rotation of the shaft 20, the rotation angle of the large reflector 2 is determined by the correspondence between the first reference line 202 and a certain scale mark 115.

[0057] In other words, in this embodiment, the cooperation between the limiting groove 110 and the limiting protrusion 201 can limit the angular range of the rotation axis 20 of the large reflector 2, and can also determine the rotation angle of the rotation axis 20 of the large reflector 2 through the cooperation of the scale mark 115 on the limiting groove 110 and the first reference line 202 on the limiting protrusion 201.

[0058] Specifically, when the rotating shaft 20 rotates, the limiting protrusion 201 rotates synchronously within the limiting groove 110. Since the limiting protrusion 201 is provided with a first reference line 202, as the limiting protrusion 201 rotates, the first reference line 202 will align with the scale markings 115 at different positions on the limiting groove 110.

[0059] Specifically, when the rotating shaft 20 starts to rotate and drives the limiting protrusion 201 to a certain position, the first reference line 202 on the limiting protrusion 201 will correspond exactly to a specific scale mark 115 on the limiting groove 110. At this time, the angle value represented by the specific scale mark 115 is the rotation angle of the rotating shaft 20 of the large reflecting mirror 2 at that moment.

[0060] For example, if a scale mark 115 is set at regular intervals on the limiting groove 110 starting from the initial position, when the first reference line 202 aligns with a certain scale mark 115, the angle of the rotation axis 20 of the large reflector 2 can be determined by determining the setting corresponding to the scale mark 115 (e.g., the interval distance between the scale mark 115 and the reference scale mark, and the rotation angle is calculated based on the interval distance, or the scale mark 115 directly corresponds to the rotation angle). Through this precise cooperation between the scale mark 115 on the limiting groove 110 and the first reference line 202 on the limiting protrusion 201, the rotation angle of the rotation axis 20 of the large reflector 2 can be determined in a direct and accurate manner. Thus, before the head-up display device leaves the factory, the rotation angle of the rotation axis 20 of the large reflector 2 and the corresponding mapping relationship between the eye box area can be predetermined by the cooperation between the scale mark 115 formed on the limiting groove 110 and the first reference line 202 formed on the limiting protrusion 201, without using an angle sensor.

[0061] In this embodiment, a first reference line 202 is provided on the limiting protrusion 201 of the rotating shaft 20. This first reference line 202, together with the third reference line 203 mentioned later, forms a cross scale. Simultaneously, multiple scale markings are provided within the limiting groove 110 of the elastic structure 11. With these features, the rotation angle of the rotating shaft 20 can be directly read without the need for additional tools.

[0062] When the rotating shaft 20 is rotating, if the first reference line 202 and the scale mark 115 in the limiting groove 110 are misaligned or otherwise abnormal at a certain rotation angle, this indicates that there is a tolerance problem in the size or assembly of the internal components of the head-up display device. Operators can accurately pinpoint the root cause of the problem based on the misalignment of the scale, effectively preventing defective products from entering subsequent production stages and reducing the risk of disassembly and rectification due to defective products. In this way, the assembly tolerance of the internal components of the head-up display device can be detected during the assembly stage.

[0063] Specifically, the rotation angle of the shaft 20 should theoretically correspond to the corresponding scale mark on the elastic structure 11, with the first reference line 202 maintaining a specific relationship. This correspondence is pre-set under ideal dimensions and assembly precision. Multiple scale marks are provided within the limiting groove 110 of the elastic structure 11. These scale marks are engraved according to certain precision and rules, and they cooperate with the first reference line 202 to accurately measure the rotation angle of the shaft 20. Ideally, when the shaft 20 rotates to a specific angle, the first reference line 202 should accurately point to the corresponding scale mark within the limiting groove 110, thus allowing for accurate reading of the shaft's rotation angle.

[0064] When the rotating shaft 20 is rotating, if the first reference line 202 and the scale mark 115 in the limiting groove 110 are misaligned at a certain rotation angle, this is due to tolerance issues in the dimensions or assembly of the internal components of the head-up display device. For example, the installation position of the rotating shaft 20 may be deviated, causing its rotation center to not coincide with the theoretical center; or the dimensions of the elastic structure 11 may not meet the design requirements, causing the position of the limiting groove 110 to shift; or the assembly of other related components may be loose, resulting in slight displacement during device operation. These factors will disrupt the original correspondence between the first reference line 202 and the scale mark 115, thus causing misalignment. Different directions and degrees of misalignment correspond to different types and locations of tolerance problems. For example, if the first reference line 202 is misaligned to one side relative to the scale mark 115, by analyzing the dimensions and assembly relationships of the related components on that side, it can be preliminarily determined which component has dimensional errors or improper assembly. By measuring and analyzing the skew in detail, and combining this with the equipment design drawings and assembly process requirements, the specific components and locations with tolerance issues can be accurately identified. This allows operators to promptly identify problems caused by tolerances during the assembly process, enabling them to immediately adjust or replace problematic components and prevent defective products from entering subsequent production stages.

[0065] According to the embodiments of this application, refer to Figure 5 The first side 111 has a plurality of line segments arranged in an array extending along the axial direction of the rotating shaft 20. The spacing between adjacent line segments corresponds to the rotation angle value of the large reflector 2. The plurality of line segments are defined as a plurality of scale marks 115. The first reference line 202 is a line that extends along the axial direction of the rotating shaft 20 and passes through the geometric center of the limiting protrusion 201.

[0066] In this embodiment, a plurality of line segments are arranged in an array along the edge of the first side 111. When the shape of the limiting groove 110 is racetrack-shaped, the line segments extend approximately along the minor axis of the racetrack-shaped limiting groove 110. The spacing between adjacent line segments corresponds to the rotation angle value of the large reflector 2.

[0067] The first reference line 202 is a line that is roughly in the same direction as the extension of the line segment and passes through the geometric center of the limiting protrusion 201.

[0068] For example, line segment a1 is the scale line that needs to be aligned in the design state of the large reflector 2 (corresponding to the middle eye box position). When the large reflector 2 rotates, the first reference line 202 rotates to the state corresponding to line segment a1, and the image of the head-up display device is at the middle eye box position. Line segments a2 and a3, which are spaced apart from line segment a1 (first reference scale mark 116), are spaced by the same size as line segment a1, and other adjacent line segments are also spaced by the same size. The rotation angle corresponding to this spacing size is 2°. In this case, the optical angle range of the large reflector 2 adapted to by the limiting component 1 is (-14°, 10°), which can basically cover the design angle requirements of most projects.

[0069] Specifically, from a mechanical motion perspective, the rotation of the shaft 20 causes the limiting protrusion 201 to rotate synchronously within the limiting groove 110. The line segments arranged in an array on the limiting groove 110 serve as markers for angle scales, and their intervals are carefully designed and calculated. When the shaft 20 rotates by a certain angle, the limiting protrusion 201 will rotate by the same angle, and the first reference line 202 on the limiting protrusion 201 will align with the line segments at different positions on the limiting groove 110.

[0070] Specifically, since the spacing between adjacent line segments is fixed, and this spacing has a one-to-one correspondence with the rotation angle value of the large reflector 2. For example, in this embodiment, the rotation angle corresponding to the spacing between adjacent line segments is 2°, which means that whenever the first reference line 202 moves from one line segment to the next adjacent line segment, the large reflector 2 rotates by 2°.

[0071] From an optical principle perspective, the rotation of the large reflector 2 changes the direction of its reflected light, thus affecting the imaging position of the head-up display device at the eye box location. By pre-setting the correspondence between the line segment interval size and the rotation angle of the large reflector 2, the operator can accurately determine the rotation angle of the large reflector 2 based on the alignment of the first reference line 202 with the line segments. This ensures that the image from the head-up display device can accurately fall within the designated area of ​​the eye box, meeting the design requirements of different usage scenarios. This design method eliminates the need for an additional angle sensor, achieving precise control of the rotation angle of the large reflector 2 and accurate adjustment of the imaging position through a simple mechanical structure and scale markings 115.

[0072] According to the embodiments of this application, refer to Figure 5 The plurality of scale markings 115 include a first reference scale marking 116, a second reference scale marking 117, and a third reference scale marking 118; the first reference scale marking 116 is located between the second reference scale marking 117 and the third reference scale marking 118; When the rotating shaft 20 is rotated to align the first reference line 202 with the first reference scale mark 116, the image light reflected by the large reflector corresponds to the middle eye box area in the eye box. When the rotating shaft is rotated to align the first reference line 202 with the second reference scale mark 117, the image light reflected by the large reflector corresponds to the lower boundary of the eye box; When the rotating shaft is rotated to align the first reference line 202 with the third reference scale mark 118, the large reflector is in the parking position.

[0073] In this embodiment of the application, as shown in FIG5, the limiting groove 110 is provided with a plurality of scale markings 115, which specifically include a first reference scale marking 116, a second reference scale marking 117 and a third reference scale marking 118.

[0074] The first reference scale mark 116 is located between the second reference scale mark 117 and the third reference scale mark 118. These scale marks 115 are arranged on the limiting groove 110 according to a specific pattern, and are used to accurately mark the different rotation angle positions of the large reflector 2. This provides the operator with an intuitive and easy-to-operate angle reference system, which greatly facilitates the judgment and adjustment of the rotation angle of the large reflector 2. Among the numerous scale markings 115, the first reference scale marking 116 constitutes the key reference point of the entire scale marking system. When the rotating shaft 20 rotates until the first reference line 202 set on the limiting protrusion 201 is aligned with the first reference scale marking 116, it indicates that the large reflector 2 is in a pre-set specific position. At this time, the image light reflected by the large reflector 2 corresponds exactly to the middle eye box area in the eye box. That is, by aligning the scale marking 115 with the first reference line 202 in this simple way, the large reflector 2 can be quickly and accurately adjusted to a suitable reflection angle, achieving precise positioning of the image light in the middle eye box. The second reference scale mark 117 is located to the right of the first reference scale mark 116 and is at a specific preset position on the limiting groove 110 corresponding to the lower eyelid box boundary. During the rotation of the rotating shaft 20, when the first reference line 202 is aligned with the second reference scale mark 117, the large reflector of the head-up display device rotates to the position corresponding to the lower eyelid box boundary.

[0075] The third reference scale mark 118 is located to the left of the first reference scale mark 116 and is at a specific mark position on the limiting groove 110 corresponding to the parking position of the large reflector. During the rotation of the rotating shaft 20, when the first reference line 202 is aligned with the third reference scale mark 118, the large reflector of the head-up display device rotates to the position corresponding to parking.

[0076] In this embodiment, the operator can use this system to quickly and accurately determine the rotation angle of the large reflector 2 and make corresponding adjustments without the need for complex tools or tedious calculations, which greatly improves the convenience and efficiency of operation and effectively reduces the difficulty of operation and the error rate.

[0077] According to the embodiments of this application, refer to Figure 5 The line segment is set perpendicular to the first side 111.

[0078] In this embodiment, the line segments are arranged perpendicular to the first side 111. This arrangement is simple and intuitive, as the arrangement direction of the line segments forms a clear perpendicular relationship with the first side 111, making it easy for operators to observe and judge when adjusting the angle. For example, with the first side 111 as a horizontal reference, the line segments are arranged vertically, and the spacing between adjacent line segments corresponds to a specific rotation angle value of the large reflector 2.

[0079] According to further embodiments of this application, referring to... Figure 5 The limiting groove 110 includes a second side 112 parallel to the axis of the rotating shaft 20. The second side 112 has at least one tangent line, the direction of which is parallel to the axis of the rotating shaft 20. A limiting reference line 119 is provided on the second side 112, and the limiting reference line 119 is set perpendicular to the second side 112. The limiting protrusion 201 is provided with a second reference line 203, and the extension direction of the second reference line 203 is consistent with the extension direction of the limiting reference line 119; when the rotating shaft 20 rotates to the limit position, the limiting reference line 119 and the second reference line 203 are aligned.

[0080] In this embodiment, the limiting groove 110 also includes a second side portion 112. For example, if the limiting groove 110 is a runway-shaped limiting groove 110, the extending direction of the second side portion 112 is approximately the same as the short axis direction of the runway-shaped limiting groove 110.

[0081] A limit reference line 119 is also provided on the limit groove 110. Specifically, the limit reference line 119 is provided on the edge of the second side 112. For example, when the limit groove 110 is a racetrack-shaped limit groove 110, the extension direction of the limit reference line 119 is approximately along the long axis of the limit groove 110.

[0082] Correspondingly, a second reference line 203 is also provided on the limiting protrusion 201. The extension direction of the second reference line 203 is consistent with the extension direction of the limiting reference line 119. When the rotating shaft 20 of the large reflector 2 rotates to the limit position (the limiting protrusion 201 abuts against the second side 112), the limiting reference line 119 and the second reference line 203 are aligned. This alignment ensures that the rotation angle of the large reflector 2 meets the design requirements and there is no deviation. This ensures that the image light reflected by the large reflector 2 in the head-up display device can accurately fall on the appropriate position of the eye box, improving the display effect and user experience.

[0083] If, when the rotating shaft 20 of the large reflector 2 rotates to its limit position (where the limiting protrusion 201 abuts against the second side 112), the limiting reference line 119 and the second reference line 203 are misaligned, i.e., the limiting reference line 119 and the second reference line 203 are skewed, this indicates a deviation in the rotation angle of the large reflector 2. By observing the specific degree of skewness, the cause of the deviation during the production process can be quickly identified and investigated. This deviation investigation mechanism can proactively address problems, promptly identifying and resolving potential issues during the product manufacturing stage, thereby improving product quality and reliability.

[0084] The principle by which the limiting component 1 can lock the rotating shaft 20 housed in the recessed groove 101 will be further explained below: Reference Figure 2 The rotating shaft 20 includes a first rotating shaft 205 and a second rotating shaft 20, as well as a shoulder 204 located between the first rotating shaft 205 and the second rotating shaft 206.

[0085] Before the spring-loaded structure 11 is installed, the large reflector 2 places the first section of the rotating shaft 205 into the recessed groove 101 of the bearing structure 10, with the shoulder 204 structural sidewall acting as a Y-axis limiter. The spring-loaded structure 11 is then snapped in, achieving Z-axis limiter with the second section of the rotating shaft 206. The fin-shaped component is symmetrically pre-pressed against the edge of the rotating shaft 20 to ensure a stable connection between the shaft and hole and the rotational stability. Simultaneously, the limiting protrusion 201 on the rotating shaft 20 is inserted into the limiting groove 110 of the spring-loaded structure 11. When the large reflector 2 reaches a predetermined angle during rotation, the limiting protrusion 201 contacts the sidewall (upper-level limited edge) of the limiting groove 110, locking the rotation angle of the rotating shaft 20. The entire installation process of the spring-loaded structure 11 eliminates the need for screwing in the Z-axis direction, offering greater flexibility.

[0086] For example, the spring structure 11 is made of spring steel, which has excellent elasticity and strength, and is suitable for the shaft 20 structure with shaft-hole fit.

[0087] For example, the spring structure 11 is U-shaped overall.

[0088] According to further embodiments of this application, refer to 1, Figure 2 and Figure 4 The spring structure 11 has a first wing-shaped component 118 and a second wing-shaped component 119 on both sides of the limiting groove 110 for contacting the surface of the rotating shaft 20. The first wing-shaped component 118 and the second wing-shaped component 119 are arranged opposite each other in a direction perpendicular to the axial direction of the rotating shaft 20.

[0089] For example, the opening angle of the figure-eight shape formed by the first wing-shaped component 118 and the second wing-shaped component 119 is in the range of 60°-80°, and preferably, the opening angle of the figure-eight shape formed by the first wing-shaped component 118 and the second wing-shaped component 119 is 70°.

[0090] In this embodiment, the spring sheet structure 11 locks the rotating shaft 20 located in the recessed groove 101 through its elastic deformation. Furthermore, a first wing-shaped component 118 and a second wing-shaped component 119 are provided on the spring sheet structure 11. For example, a symmetrical groove is provided in the middle of the spring sheet structure 11, and the inner tongue is bent downward in an arc shape to form a wing-shaped component, specifically forming a first wing-shaped component 118 and a second wing-shaped component 119.

[0091] The first wing-shaped component 118 and the second wing-shaped component 119 can form a symmetrical interference fit with the rotating shaft 20. The interference amount is 0.1mm-0.3mm, which can significantly improve the tightness of the connection between the spring structure 11 and the rotating shaft 20, reduce the shaft hole fit clearance, ensure the stability of the overall connection of the shaft hole fit, and meet the rotation accuracy requirements of the rotating shaft 20.

[0092] Specifically, the wing-shaped component increases the effective contact area between the spring structure 11 and the rotating shaft 20, so that the pressure of the spring structure 11 on the rotating shaft 20 is no longer concentrated at a local point, but is distributed and transmitted through the contact areas of one "wing" on each side. According to the pressure formula P=F / S (P is pressure, F is force, and S is contact area), the pressure F is distributed over a larger contact area S, reducing local pressure, dispersing stress, and effectively avoiding stress concentration. In addition, the wing-shaped component can adaptively compensate for minor morphological differences in the rotating shaft 20 (such as machining tolerances, minor deformations, etc.), further adjust the pressure distribution in the contact area, make the pressure on the entire contact surface more balanced, and reduce the risk of local wear or deformation. Furthermore, the spring structure 11 applies a flexible and uniform clamping force to the rotating shaft 20 through its "wings." When the rotating shaft 20 drives the large reflector 2 to rotate, this uniform clamping force is converted into a uniform frictional torque. The consistency of the frictional torque ensures that the rotating shaft 20 rotates with "smooth resistance" and will not wobble, jam, or decrease in rotational accuracy due to sudden changes in local force (such as excessive pressure at a single point).

[0093] Therefore, in this embodiment, the wing-shaped component achieves uniform pressure distribution and provides stable and continuous constraint for the rotation of the rotating shaft 20 through "dispersed contact + elastic self-adaptation", ultimately ensuring the smooth rotation of the lens.

[0094] According to further embodiments of this application, referring to... Figure 1 , Figure 2 and Figure 4 The spring sheet structure is provided with a first flange structure 120 and a second flange structure 121 on both sides of the limiting groove 110 for connecting with the bottom shell 3 and the shoulder 204 of the rotating shaft 20. The first flange structure 120 and the second flange structure 121 are arranged opposite to each other along the axial direction of the rotating shaft 20.

[0095] In this embodiment, a first flange structure 120 and a second flange structure 121 are added to the middle region of the spring sheet structure 11 in the Y direction (the direction in which the first side 111 and the third side 113 are arranged opposite each other). The flange structure can greatly enhance the structural rigidity of the spring sheet structure 11, resist the force generated during the long-term rotation of the rotating shaft 20, avoid the spring sheet from deforming due to force, extend the service life of the spring sheet from the structural level, and ensure the reliability of the component for long-term use.

[0096] According to further embodiments of this application, refer to 1- Figure 3 The bearing structure 10 is provided with a first connecting plate 102 and a second connecting plate 103 in a direction perpendicular to the axis of the rotating shaft 20. The first connecting plate 102 and / or the second connecting part are provided with a protrusion 104 on the side opposite to each other. The spring structure 11 has a connecting arm 131 that is disposed opposite to the first connecting plate 102 or the second connecting plate 103, and the connecting arm 131 has a connecting hole 1310 that cooperates with the protrusion 104. The spring structure 11 also includes an end portion disposed at the free end of the connecting arm 131, the end portion being bent to form an abutment portion 132 that abuts against the first connecting plate 102 or the second connecting plate 103.

[0097] In this embodiment, the supporting structure 10 further includes a first connecting plate 102 and a second connecting plate 103, which are disposed opposite to each other in the X direction. A recessed groove 101 of the supporting structure 10 is formed between the first connecting plate 102 and the second connecting plate 103.

[0098] A protrusion 104 is provided on the surface of the first connecting plate 102 opposite to the surface of the second connecting plate 103, and / or a protrusion 104 is provided on the surface of the second connecting plate 103 opposite to the surface of the first connecting plate 102.

[0099] During the installation of the spring sheet structure 11, the connecting hole 1310 formed by the connecting wall of the spring sheet structure 11 engages with the protrusion 104, and the end of the spring sheet structure 11 forms an abutment part 132 that abuts against the first connecting plate 102 or the second connecting plate 103 of the bearing structure 10. In this way, the other parts of the spring sheet structure can be deformed by fixing the end of the spring sheet structure 11 to lock the rotating shaft 20.

[0100] According to a specific embodiment of this application, refer to Figure 3 The abutting portion 132 includes a first elastic segment 133 extending in a direction perpendicular to the axis of the connecting hole 1310, a first arc segment 134 and a second arc segment 135 connected to the first elastic segment 133, the bending direction of the first arc segment 134 and the bending direction of the second arc segment 135 being opposite, and the second arc segment 135 abutting against the bottom surface of the protrusion 104; The abutting portion 132 further includes a second elastic segment 136 connecting the first arc segment 134 and the second arc segment 135, and the abutting portion 132 further includes a third elastic segment 137 connected to the second arc segment 135 and extending toward the first arc segment 134, the third elastic segment 137 abutting against the first connecting plate 102 or the second connecting plate 103.

[0101] In this embodiment, the abutment portion 132 includes a first elastic segment 133, a first arc-shaped segment 134, a second elastic segment 136, a second arc-shaped segment 135, and a third elastic segment 137 connected to each other, wherein the first elastic segment 133, the first arc-shaped segment 134, the second elastic segment 136, the second arc-shaped segment 135, and the third elastic segment 137 sequentially form an S-shaped abutment portion 132.

[0102] The S-shaped abutment portion 132 serves to limit the rotation shaft 20 in the X and Z directions, preventing direct contact between the connecting hole 1310 ridge and the protrusion 104 surface. This effectively prevents cracks in the bearing structure 10 (usually made of plastic) due to hard contact and avoids wear and tear on the protrusion 104 on the bearing structure 10 during long-term use, which could lead to displacement of the spring structure 11 in the Z direction. This ensures the radial assembly stability of the rotation shaft 20 and avoids rotational failures caused by radial offset. In addition, the arc design has a higher tolerance for machining tolerances, and slight dimensional deviations can be elastically adapted by the arc surface.

[0103] In a specific embodiment, the SUS301 spring sheet (thickness 0.3mm, balancing elasticity and rigidity requirements) and the PC / ABS+GF20% material load-bearing structure 10 are taken as the research object. Combined with ANSYS finite element analysis (defining the elastic modulus of the spring sheet structure 11 as 190GPa and Poisson's ratio as 0.3, the elastic modulus of the load-bearing structure 10 as 8.5GPa and Poisson's ratio as 0.35; applying a 50N clamping preload, constraining the full degree of freedom of the connection area of ​​the load-bearing structure 10, and the spring sheet structure 11 only retaining the translational degree of freedom along the clamping direction).

[0104] The results show that when the radius of curvature of the arc-shaped contact section of the spring sheet structure 11 is 1.2mm-1.8mm, the maximum contact pressure at the snap-fit ​​interface can be controlled at 35-40MPa. The allowable contact pressure of the PC / ABS+GF20% load-bearing structure 10 in the convex contact scenario is 55MPa (based on the material bending strength of 120MPa). At this time, the maximum pressure of the arc-shaped contact is lower than the upper limit of the allowable limit, the safety factor is ≥1.5, which meets the requirements for long-term use and can effectively prevent the load-bearing structure 10 from plastic deformation or cracking due to excessive local stress.

[0105] According to an embodiment of this application, a head-up display (HUD) device is provided. The HUD device includes a limiting component as described above. Applying this limiting component to the HUD device allows operators to quickly and accurately determine the rotation angle of the large reflector 2 and make corresponding adjustments without the need for complex tools or tedious calculations, greatly improving the convenience and efficiency of operation and effectively reducing operational difficulty and error rate.

[0106] According to further embodiments of this application, referring to... Figure 3 The third elastic segment 137 has a guide elastic segment 138 formed on the side opposite to the second arc segment 135, and the guide elastic segment 138 is inclined toward the first arc segment 134.

[0107] In this embodiment, the end of the abutment portion 132 of the S-shaped structure is provided with a guide elastic section 138. The guide elastic section 138 has a guiding function, which will not cause wear on the bearing structure 10 protrusion 104 structure in the spring sheet structure 11, and can achieve snap-fit ​​installation and fixation through the deformation of the spring sheet structure 11.

[0108] According to a second aspect of this application, a support system is provided. Support structure system: A large reflector support structure is provided for supporting the large reflector 2 of the head-up display device. The large reflector support structure includes two rotating shafts 20 disposed on both sides of the large reflector 2, and a limiting component 1 as described above.

[0109] In some embodiments, the support structure further includes a bottom shell 3 for supporting the large reflector 2, wherein the load-bearing structure 10 is integrally formed with the bottom shell 3.

[0110] In some embodiments, the support system may also include a large reflector 2.

[0111] According to a third aspect of this application, a support system is provided. The support structure includes: As described above, the limiting component 1; and the base shell 3 for supporting the large reflector 2 of the head-up display device, wherein the supporting structure 10 and the base shell 3 are integrally formed.

[0112] According to a fourth aspect of this application, a head-up display device is provided. The head-up display device includes the support system as described above.

[0113] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0114] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A limiting component, characterized in that, The limiting component is applied to the head-up display device to limit the rotation angle of the rotating shaft (20) set on both sides of the large reflector, wherein the rotating shaft (20) is provided with a limiting protrusion (201). The limiting component includes: a load-bearing structure (10) and a spring sheet structure (11). The bearing structure (10) has a recessed groove (101) for bearing the rotating shaft (20). The spring structure (11) is used to lock the rotating shaft (20) in the recessed groove (101). The spring structure (11) has a limiting groove (110) that cooperates with the limiting protrusion (201). The limiting groove (110) has an extreme position that cooperates with the limiting protrusion (201). The extreme position corresponds to a specific preset position of the head-up display device. The specific preset position is the boundary of the eye box and the parking position of the large reflector.

2. The limiting component according to claim 1, characterized in that, The limiting groove (110) includes a first side (111) perpendicular to the axis of the rotating shaft (20). Along the extension direction of the first side (111), the limiting groove (110) is provided with a plurality of scale marks (115). The limiting protrusion (201) is provided with a first reference line (202) corresponding to the scale marks (115). During the rotation of the rotating shaft (20), the rotation angle of the large reflector is determined by the corresponding position of the first reference line (202) and the scale marks (115).

3. The limiting component according to claim 2, characterized in that, The first side (111) has a plurality of line segments arranged in an array extending along the axial direction of the rotation axis (20), the spacing between adjacent line segments corresponds to the rotation angle value of the large reflector, and the plurality of line segments are defined as a plurality of scale marks (115). The first reference line (202) is a line that extends along the axial direction of the pivot (20) and passes through the geometric center of the limiting protrusion (201).

4. The limiting component according to claim 2, characterized in that, The plurality of scale markings (115) include a first reference scale marking (116), a second reference scale marking (117), and a third reference scale marking (118); the first reference scale marking (116) is located between the second reference scale marking (117) and the third reference scale marking (118); When the pivot (20) is rotated to align the first reference line (202) with the first reference scale mark (116), the image light reflected by the large reflector corresponds to the middle eye box area in the eye box; When the pivot (20) is rotated to align the first reference line (202) with the second reference scale mark (117), the image light reflected by the large reflector corresponds to the boundary of the lower eyelid box; The large reflector is in the parking position when the pivot (20) is rotated to align the first reference line (202) with the third reference scale mark (118).

5. The limiting component according to claim 3, characterized in that, The line segment is set perpendicular to the first side (111).

6. The limiting component according to any one of claims 1-5, characterized in that, The limiting groove (110) includes a second side (112), the second side (112) has at least one tangent line, the direction of the tangent line is parallel to the axial direction of the rotating shaft (20), and a limiting reference line (119) is provided on the second side (112), the limiting reference line (119) is perpendicular to the second side (112); The limiting protrusion (201) is provided with a second reference line (203), and the extension direction of the second reference line (203) is consistent with the extension direction of the limiting reference line (119); when the rotating shaft (20) rotates to the limit position, the limiting reference line (119) and the second reference line (203) are aligned.

7. The limiting component according to any one of claims 1-5, characterized in that, The spring structure (11) has a first wing-shaped component (118) and a second wing-shaped component (119) on both sides of the limiting groove (110) for contacting the surface of the rotating shaft (20). The first wing-shaped component (118) and the second wing-shaped component (119) are arranged opposite each other in a direction perpendicular to the axis of the rotating shaft (20).

8. The limiting component according to claim 7, characterized in that, The spring sheet structure (11) has a first flange structure (120) and a second flange structure (121) on both sides of the limiting groove (110) for connecting with the bottom shell (3) and the shoulder (204) of the rotating shaft (20). The first flange structure (120) and the second flange structure (121) are arranged opposite to each other along the axial direction of the rotating shaft (20).

9. The limiting component according to claim 7, characterized in that, The bearing structure (10) is provided with a first connecting plate (102) and a second connecting plate (103) in a direction perpendicular to the axis of the rotating shaft (20), and a protrusion (104) is provided on the side of the first connecting plate (102) and / or the second connecting plate (103) away from each other. The spring structure (11) has a connecting arm (131) that is disposed opposite to the first connecting plate (102) or the second connecting plate (103), and the connecting arm (131) has a connecting hole (1310) that mates with the protrusion (104). The spring structure (11) also includes an end portion disposed at the free end of the connecting arm (131), the end portion being bent to form an abutment portion (132) that abuts against the first connecting plate (102) or the second connecting plate (103).

10. The limiting component according to claim 9, characterized in that, The abutting portion (132) includes a first elastic segment (133) extending in a direction perpendicular to the axis of the connecting hole (1310), a first arc segment (134) and a second arc segment (135) connected to the first elastic segment (133), the bending direction of the first arc segment (134) and the bending direction of the second arc segment (135) being opposite, and the second arc segment (135) abutting against the bottom surface of the protrusion (104); The abutting portion (132) further includes a second elastic segment (136) connecting the first arc segment (134) and the second arc segment (135), and the abutting portion (132) further includes a third elastic segment (137) connected to the second arc segment (135) and extending toward the first arc segment (134), the third elastic segment (137) abutting against the first connecting plate (102) or the second connecting plate (103).

11. The limiting component according to claim 10, characterized in that, The third elastic segment (137) has a guide elastic segment (138) formed on the side opposite to the second arc segment (135), and the guide elastic segment (138) is inclined toward the first arc segment (134).

12. A head-up display device, characterized in that, Includes the limiting component as described in any one of claims 1-11.

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