HUD (Head Up Display) mechanism

Abstract

The utility model relates to an HUD (Head Up Display) mechanism, and belongs to the technical field of HUD display. The curved mirror is rotatably mounted on the mounting shell, the positioning mirror is mounted corresponding to the curved mirror, the rotating mechanism drives the curved mirror to rotate, and the mounting shell is provided with an image output port through which an image passes and is projected on a windshield. The HUD display mechanism has the effect of improving the adaptability of the HUD display mechanism to different drivers.

Description

Technical Field

[0001] This application relates to the field of HUD display technology, and in particular to a HUD head-up display mechanism. Background Technology

[0002] HUD (Head-Up Display) is a technology that projects key driving information, such as vehicle speed and navigation instructions, directly into the driver's line of sight.

[0003] In a head-up display (HUD), the PGU stands for Power Generation Unit or Image Generation Unit, and it is one of the core components of the HUD system. Current HUD displays typically consist of a photoelectric display mounted on the dashboard, where the image generated by the PGG is displayed. However, because the photoelectric display is generally fixed to the dashboard, the displayed image is limited to a specific area, resulting in low adaptability to different drivers. Utility Model Content

[0004] To improve the adaptability of the HUD display mechanism to different drivers, this application provides a HUD head-up display mechanism.

[0005] The HUD (Head-Up Display) mechanism provided in this application adopts the following technical solution:

[0006] A head-up display (HUD) mechanism includes a mounting housing, a PGU unit, a curved mirror rotatably mounted on the mounting housing, a positioning mirror corresponding to the curved mirror, and a rotation mechanism for driving the curved mirror to rotate. The mounting housing has an image output port through which an image passes and is projected onto a windshield. The rotation mechanism includes a rotation drive, a drive worm, and a transmission member disposed on the curved mirror and cooperating with the drive worm. The transmission member has transmission teeth that mesh with the drive worm.

[0007] By adopting the above technical solution, the PGU first emits the image to the positioning mirror, which then refracts the image onto the curved mirror. The curved mirror then refracts the image onto the windshield of the car, finally displaying the image on the windshield. The curved mirror is rotatably mounted on the mounting housing. The rotating drive component drives the drive worm gear to rotate, which in turn drives the transmission component to rotate through the transmission tooth surface, thereby realizing the rotation of the curved mirror. The rotating mechanism has a simple structure, stable transmission, and high adjustment precision. It can change the position of the image on the windshield, thus adapting to different drivers, improving the driving experience, eliminating the need for a photoelectric display device, making the structure simpler, and reducing the collision risk of the dashboard protruding outwards.

[0008] Optionally, the output shafts of the driving worm and the rotating drive are eccentrically arranged, the end of the driving worm is provided with a driven disk, and the output shaft of the rotating drive is provided with a driving disk that drives the driven disk to rotate, wherein the outer diameter of the driven disk is larger than that of the driving disk.

[0009] By adopting the above technical solution, the output shaft of the rotary drive component and the motor housing are eccentrically set. Through the cooperation of the driven plate and the drive plate, the rotary drive component can drive the drive worm to rotate. The outer diameter of the driven plate is larger than that of the drive plate, which has the effect of increasing torque and stabilizing transmission.

[0010] Optionally, the transmission component has a mounting groove for mounting the curved mirror, the bottom wall of the mounting groove has a mounting through hole, the curved mirror has a mounting post corresponding to the mounting through hole, and the end face of the mounting post has a bolt hole.

[0011] By adopting the above technical solution, the installation groove increases the contact area between the transmission component and the curved mirror, improving the connection strength. After the curved mirror is inserted into the installation groove, the bolt passes through the installation through hole and cooperates with the installation column to fix the transmission component and the curved mirror. The fixing method is simple and the strength is reliable.

[0012] Optionally, the bottom wall of the mounting groove is provided with a positioning post on one side of the mounting through hole, and the curved mirror is provided with a positioning groove that is inserted and matched with the positioning post.

[0013] By adopting the above technical solution, the cooperation between the positioning column and the positioning groove enables the assembly of the transmission component and the curved mirror to achieve a positioning effect, thereby improving assembly efficiency.

[0014] Optionally, the curved mirror is provided with a rotating shaft at both ends, and a rotating seat that rotates with the rotating shaft is provided inside the mounting housing.

[0015] By adopting the above technical solution, the curved mirror is rotatably mounted on the mounting housing via a rotating shaft. The rotating base and the mounting housing are detachably connected, so that the curved mirror first mates with the rotating base before installation, and then the curved mirror and the rotating base are fixed to the mounting housing, which improves assembly efficiency.

[0016] Optionally, a lens bracket is provided on the side of the positioning mirror away from the curved mirror, and the lens bracket is snapped and fixed to the lower housing.

[0017] By adopting the above technical solution, the positioning mirror is fixed to the mounting housing by the lens bracket, and the lens bracket and the mounting housing are snapped together, making it easy to assemble and disassemble the positioning mirror and the mounting housing.

[0018] Optionally, the mounting housing includes an upper housing, a lower housing, and a sub-housing. The PGU unit is disposed in the sub-housing, which is located at the bottom of the lower housing. The curved mirror and the positioning mirror are both disposed in the lower housing. The lower housing is made of aluminum alloy.

[0019] By adopting the above technical solution, the mounting housing is specifically divided into an upper housing, a lower housing, and a sub-housing, which makes the assembly of the overall HUD display mechanism more convenient. The lower housing is made of aluminum alloy, which makes the heat dissipation effect of the PGU more ideal.

[0020] Optionally, the mounting housing is provided with a light shield at the image output port.

[0021] By adopting the above technical solution, the light shield can block and filter light at the image output port, reduce light interference, and improve image contrast and clarity.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. This application achieves the rotation of the curved mirror by setting a rotating mechanism, which can change the position of the image on the windshield, thereby adapting to different drivers, improving the driving experience, eliminating the photoelectric display device, making the structure simpler, and reducing the collision risk of the dashboard protruding outward;

[0024] 2. This application enables the rotating drive component to drive the drive worm gear to rotate through the cooperation of the driven disc and the drive disc. The outer diameter of the driven disc is larger than that of the drive disc, which has the effect of increasing torque and stabilizing transmission.

[0025] 3. This application features a compact structure and convenient assembly through the installation of through holes and mounting posts on the transmission components, thereby improving the connection strength between the transmission components and the curved mirror. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0027] Figure 2 This is a schematic cross-sectional view of an embodiment of this application.

[0028] Figure 3 This is an exploded schematic diagram of the shell and the sub-shell in an embodiment of this application.

[0029] Figure 4 This is an exploded view of the positioning mirror and the lower housing according to an embodiment of this application.

[0030] Figure 5 This is a schematic diagram of the structure of the rotating mechanism and the curved mirror in an embodiment of this application.

[0031] Figure 6This is an exploded schematic diagram of the rotating mechanism in an embodiment of this application.

[0032] Figure 7 This is a schematic cross-sectional view of the fit between the fixed base and the transmission component in an embodiment of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Mounting housing; 11. Upper housing; 111. Image output port; 112. Light shield; 12. Lower housing; 121. Mounting slot; 122. Positioning protrusion; 123. Image input port; 124. Placement slot; 125. Lens slot; 126. Snap-fit ​​plate; 1261. Snap-fit ​​slot; 13. Sub-housing; 14. Protective cover; 15. Motor base; 16. Worm gear base; 17. Motor mounting plate; 171. Rotating shaft; 18. Rotating seat; 2 1. PGU unit; 21. Positioning hole; 3. Curved mirror; 31. Rotating shaft; 32. Fixed base; 321. Mounting post; 322. Positioning groove; 4. Positioning mirror; 5. Rotation mechanism; 51. Rotation drive component; 511. Drive disk; 52. Drive worm gear; 521. Driven disk; 53. Transmission component; 531. Transmission tooth surface; 532. Mounting groove; 533. Mounting through hole; 534. Positioning post; 6. PCB control board; 7. Lens bracket; 71. Snap-fit ​​block. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0035] This application discloses a HUD (Head-Up Display) mechanism.

[0036] Reference Figure 1 and Figure 2 A head-up display (HUD) mechanism includes a mounting housing 1, a power generation unit (PGU) 2, a curved mirror 3, a positioning mirror 4, and a rotating mechanism 5. The X-direction in the figure is defined as the vertical direction. The mounting housing 1, along the X-direction, includes an upper housing 11, a lower housing 12, and a sub-housing 13. The lower housing is made of aluminum alloy to improve the heat dissipation of the PGU.

[0037] The upper housing 11 is disposed on top of the lower housing 12, and the sub-housing 13 is disposed at the bottom of the lower housing 12. Both the upper housing 11 and the sub-housing 13 are fixed to the lower housing 12 by bolts. The structure of the PGU unit 2 is consistent with the prior art, and it is used to generate HUD images. The structure and principle of the PGU unit 2 will not be described further in this application.

[0038] Reference Figure 3 The bottom of the lower housing 12 has a mounting slot 121 for mounting the PGU unit 2, and the sub-housing 13 is a rectangular housing with an open top. The PGU unit 2 is fixed to the bottom of the lower housing 12 with bolts, and then the sub-housing 13 is fixed upward to cover the lower housing 12 and close the PGU unit 2.

[0039] The sub-shell 13 and the lower shell 12 are fixed together by four sets of bolts. The PGU unit 2 also has two sets of positioning holes 21. The bottom of the lower shell 12 is integrally provided with positioning protrusions 122 that cooperate with the positioning holes 21. With the cooperation of the positioning holes 21 and the positioning protrusions 122, it is easy to fix the PGU unit 2 and the sub-shell 13 together with bolts, thereby improving assembly efficiency.

[0040] The lower housing 12 has an image input port 123 communicating with the mounting slot 121. A positioning mirror 4 is correspondingly positioned with respect to the image input port 123, and the positioning mirror 4 and the transmitting unit of the PGU unit 2 have a refraction angle so that the image generated by the PGU unit 2 is refracted after being emitted onto the positioning mirror 4. The outer wall of the lower housing 12 has an L-shaped placement slot 124 for mounting the PCB control board 6 and a protective cover 14 covering the placement slot 124. Both the PCB control board 6 and the protective cover 14 are bolted together. The placement slot 124 has a through hole communicating with the inner cavity of the lower housing 12.

[0041] Reference Figure 2 and Figure 4 The positioning mirror 4 is fixedly mounted with a lens bracket 7 on the side away from the PGU unit 2. The positioning mirror 4 is fixed to the lower housing 12 by the lens bracket 7, and the lens bracket 7 and the lower housing 12 are snapped together. The lower housing 12 has a lens groove 125 for positioning the positioning mirror 4, and a snap-fit ​​plate 126 is provided on the opening edge of the lens groove 125. The snap-fit ​​plate 126 has a snap-fit ​​groove 1261 that penetrates both end faces, and the lens bracket 7 has a snap-fit ​​block 71 that engages with the snap-fit ​​groove 1261.

[0042] The curved mirror 3 is rotatably mounted inside the lower housing 12 and corresponds to the positioning mirror 4. The upper housing 11 covers the top opening of the lower housing 12 and has an image output port 111 that communicates with the inner cavity of the lower housing 12 for outputting images. A light shield 112 is also provided on the top of the upper housing 11 to shield the image output port 111, and the light shield 112 is fixed to the upper housing 11 with soft adhesive. The image refracted by the positioning mirror 4 is emitted to the curved mirror 3, and the image is output from the image output port 111 and displayed on the windshield after refraction by the curved mirror 3.

[0043] Reference Figure 5 and Figure 6 The rotating mechanism 5 drives the curved mirror 3 to rotate, thereby adjusting the position of the image information on the windshield. The rotating mechanism 5 includes a rotating drive component 51, a driving worm gear 52, and a transmission component 53. The rotating drive component 51 is a small rotary motor of the prior art. The lower housing 12 has a motor mount 15 for mounting the rotating drive component 51, and the motor mount 15 is fixedly connected to the lower housing 12 by bolts.

[0044] The output shafts of the drive worm 52 and the rotation drive component 51 are eccentrically positioned. The motor base 15 is detachably equipped with a worm seat 16 for mounting the drive worm 52 and a motor mounting plate 17 for fixing the rotation drive component 51. The motor mounting plate 17 is fixedly snapped onto the motor base 15, and the motor mounting plate 17 and the rotation drive component 51 are bolted together. A rotating shaft 171 is fixed on the motor mounting plate 17, and the other end of the rotating shaft 171 abuts against the inner wall of the worm seat 16.

[0045] The drive worm gear 52 is sleeved on the rotating shaft 171 and rotatably engages with the rotating shaft 171. A driven disk 521 is integrally provided on the side of the drive worm gear 52 facing the motor mounting plate 17. A drive disk 511 is provided on the output shaft of the rotation drive component 51, with the outer side of the drive disk 511 abutting against the inner sidewall of the driven disk 521. The drive disk 511 and the driven disk 521 can be driven by gears or a snap-fit ​​connection. When the drive disk 511 rotates, it can drive the driven disk 521 to rotate along the axis of the rotating shaft 171.

[0046] The transmission component 53 is fixedly connected to the curved mirror 3, and has a transmission tooth surface 531 that meshes with the drive worm gear 52. The transmission tooth surface 531 is an incomplete tooth surface, which limits the adjustment angle of the curved mirror 3.

[0047] Both ends of the curved mirror 3 are integrally provided with a rotating shaft 31, and a rotating seat 18 that rotatably engages with the rotating shaft 31 is installed and detached inside the lower housing 12. The rotating seat 18 and the lower housing 12 are fixed with bolts. To facilitate the installation of the curved mirror 3, the curved mirror 3 and the rotating seat 18 can be installed together first. Among them, the curved mirror 3 also has a fixing seat 32 on the side near the rotating mechanism 5 for mounting one of the rotating shafts 31 and for fixing with the transmission component 53.

[0048] Reference Figure 6 and Figure 7 The transmission component 53 has a mounting groove 532 corresponding to the fixed seat 32. The mounting groove 532 is rectangular, and the transmission component 53 has a mounting through hole 533 extending through both end faces in the middle of the bottom wall of the mounting groove 532. The fixed seat 32 has a mounting post 321 that inserts into the mounting groove 532 and corresponds to the mounting through hole 533. The end face of the mounting post 321 has a threaded hole, which is used to fix the fixed seat 32 and the transmission component 53. The transmission component 53 also has a positioning post 534 integrally provided on one side of the mounting through hole 533, and the bottom of the fixed seat 32 has a positioning groove 322 that engages with the positioning post 534, thereby improving the assembly efficiency of the transmission component 53 and the fixed seat 32.

[0049] The implementation principle of a HUD head-up display mechanism according to an embodiment of this application is as follows: the PGU unit 2 is fixed on the lower housing 12, and then the sub-housing 13 is installed upward to cover the PGU unit 2; the rotating drive component 51, the drive worm gear 52, the motor base 15, the motor fixing plate 17, and the worm gear base 16 are assembled and fixed on the lower housing 12; then the curved mirror 3, the rotating base 18, and the transmission component 53 are assembled, and the assembled curved mirror 3 is installed on the lower housing 12; finally, the positioning mirror 4 and the upper housing 11 are installed, and the light shield 112 is fixed to the image output port 111 with soft glue.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A HUD (Head-Up Display) mechanism, characterized in that, The device includes a mounting housing (1), a PGU unit (2), a curved mirror (3) rotatably mounted on the mounting housing (1), a positioning mirror (4) corresponding to the curved mirror (3), and a rotation mechanism (5) for driving the curved mirror (3) to rotate. The mounting housing (1) has an image output port (111) through which an image passes and is projected onto the windshield. The rotating mechanism (5) includes a rotating drive (51), a drive worm (52), and a transmission member (53) that is fixed to the curved mirror (3) and cooperates with the drive worm (52). The transmission member (53) has a transmission tooth surface (531) that meshes with the drive worm (52).

2. The HUD head-up display mechanism according to claim 1, characterized in that, The output shafts of the drive worm (52) and the rotation drive (51) are eccentrically arranged. The end of the drive worm (52) is provided with a driven disk (521). The output shaft of the rotation drive (51) is provided with a driving disk that drives the driven disk (521) to rotate. The outer diameter of the driven disk (521) is larger than that of the driving disk.

3. A HUD head-up display mechanism according to claim 2, characterized in that, The transmission component (53) has an installation groove (532) for mounting the curved mirror (3). The bottom wall of the installation groove (532) has an installation through hole (533). The curved mirror (3) has an installation post (321) corresponding to the installation through hole (533). The end face of the installation post (321) has a bolt hole.

4. A HUD head-up display mechanism according to claim 3, characterized in that, The bottom wall of the mounting groove (532) is provided with a positioning post (534) on one side of the mounting through hole (533), and the curved mirror (3) is provided with a positioning groove (322) that is inserted and matched with the positioning post (534).

5. A HUD head-up display mechanism according to claim 1, characterized in that, The curved mirror (3) has a rotating shaft (31) at both ends. The mounting housing (1) has a rotating seat (18) that rotates with the rotating shaft (31). The rotating seat (18) is detachably connected to the mounting housing (1).

6. A HUD head-up display mechanism according to claim 1, characterized in that, The positioning mirror (4) is provided with a lens bracket (7) on the side away from the curved mirror (3), and the lens bracket (7) is snapped and fixed to the mounting housing (1).

7. A HUD head-up display mechanism according to claim 1, characterized in that, The mounting housing (1) includes an upper housing (11), a lower housing (12) and a sub-housing (13). The PGU unit (2) is located at the bottom of the lower housing (12). The sub-housing (13) is located at the bottom of the lower housing (12) and covers the PGU unit (2). The curved mirror (3) and the positioning mirror (4) are both located on the lower housing (12). The lower housing (12) is made of aluminum alloy.

8. A HUD head-up display mechanism according to claim 1, characterized in that, The mounting housing (1) is provided with a light shield (112) at the image output port (111).

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