A head-up display rotating mirror drive control structure

Abstract

This utility model discloses a rotating mirror transmission control structure for a head-up display (HUD), including a drive device, an elastic adjustment member, and a rotating mirror. The elastic adjustment member is disposed on the drive device. The drive device is disposed on the HUD's bottom housing, and the elastic adjustment member is connected to the HUD's bottom housing. The rotating mirror is disposed on the HUD's bottom housing, and the rotating mirror is connected to the drive device. The elastic adjustment member is used to adjust the connection between the drive device and the rotating mirror as needed. This utility model's rotating mirror transmission control structure for a head-up display is reliable and durable, and can improve the stability of the rotating mirror transmission.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle head-up display (HUD) technology, specifically relating to a rotating mirror transmission control structure for a head-up display. Background Technology

[0002] In automotive head-up display (HUD) systems, adjusting the angle of the rotating mirror (i.e., the reflector) is a core element for achieving precise control of the image projection position. Traditional rotating mirror drive control structures typically suffer from the following problems:

[0003] (1) The structure is complex to install and inconvenient to adjust:

[0004] Existing drive devices are mostly fixed to the base shell with fasteners such as screws. During installation, precise alignment is required, and axial position adjustment is difficult. This can easily lead to excessively large or tight meshing clearance between the transmission part and the rotating mirror gear, which can easily affect the transmission accuracy.

[0005] (2) Insufficient transmission accuracy:

[0006] The stable meshing of the drive unit's transmission part and the rotating mirror gear depends on the machining accuracy of each transmission component. During long-term use, factors such as vibration and wear can easily cause meshing gaps, which can lead to jamming or backlash during the rotation of the rotating mirror, and can easily affect the accuracy of the projection angle of the head-up display system.

[0007] (3) Poor component versatility:

[0008] Limit switches are usually installed independently on the base or other components, separate from the drive device, resulting in a fragmented overall structure. When replacing or maintaining them, they need to be re-matched, making it difficult to achieve a platform-based universal design.

[0009] As can be seen from the above, the existing rotating mirror transmission control structure has problems such as complicated installation, unstable transmission accuracy, and poor component versatility.

[0010] Currently, there is a lack of a reliable and durable new mirror drive control structure to improve the stability of mirror drive.

[0011] Therefore, a new technology is needed to address the lack of a reliable and durable new rotating mirror drive control structure in existing technologies. Utility Model Content

[0012] To address the aforementioned problems in the prior art, this utility model provides a rotating mirror drive control structure for a head-up display, which is reliable, durable, and can improve the stability of the rotating mirror drive.

[0013] The present invention adopts the following technical solution:

[0014] A head-up display (HUD) rotating mirror drive control structure includes a drive device, an elastic adjustment member, and a rotating mirror; the elastic adjustment member is disposed on the drive device; the drive device is disposed on the HUD bottom shell, and the elastic adjustment member is connected to the HUD bottom shell; the rotating mirror is disposed on the HUD bottom shell, and the rotating mirror is connected to the drive device, and the elastic adjustment member is used to adjust the connection between the drive device and the rotating mirror in a timely manner.

[0015] Furthermore, the drive device includes a power unit, a bracket, and a transmission unit; both the power unit and the transmission unit are mounted on the bracket, and the power unit is connected to the transmission unit to drive the transmission unit to rotate; the bracket is mounted on the bottom shell of the HUD.

[0016] Furthermore, the power device is a motor; the transmission part is a worm gear; both the motor and the worm gear are mounted on the bracket; the motor and the worm gear are connected in a transmission connection.

[0017] Furthermore, the rotating mirror transmission control structure also includes a first slot structure; the first slot structure is disposed on the bottom shell of the HUD;

[0018] The bracket has a protrusion on its side; the bracket is connected to the first slot structure through the protrusion.

[0019] Furthermore, both the left and right ends of the protrusion are rounded.

[0020] Furthermore, one end of the elastic adjustment member is disposed in the bracket, and the other end can be connected to a set position of the HUD bottom shell.

[0021] Furthermore, the rotating mirror is provided with a rotating mirror gear, which is connected to the transmission unit for transmission.

[0022] Furthermore, the rotating mirror transmission control structure also includes a limit switch; the limit switch is disposed on the bracket;

[0023] The rotating mirror is equipped with a touch structure; the touch structure is used to trigger the limit switch.

[0024] Furthermore, the rotating mirror transmission control structure also includes a second slot structure; the second slot structure is disposed on the HUD bottom shell;

[0025] The rotating mirror has a connecting shaft on its side; the rotating mirror is connected to the second slot structure through the connecting shaft.

[0026] Furthermore, the elastic adjusting element is a bent spring sheet.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0028] This invention discloses a rotating mirror transmission control structure for a head-up display (HUD). The drive unit is equipped with an elastic adjustment component. When the drive unit is mounted on the HUD base, the other end of the elastic adjustment component is also connected to the HUD base. Therefore, the elastic adjustment component can elastically push the drive unit upwards. The rotating mirror is connected to the drive unit, and under the drive of the drive unit, the rotating mirror can move to achieve angle adjustment. With this elastic adjustment component, after the drive unit is installed on the HUD base, it can slightly float up and down in the axial direction. When gaps occur in the transmission connection between the drive unit and the rotating mirror due to machining errors or wear, the elastic force of the elastic adjustment component will promote a tighter transmission connection between the drive unit and the rotating mirror (i.e., under the action of the elastic force of the elastic adjustment component, the excess gap between the drive unit and the rotating mirror transmission connection is eliminated), thereby improving the accuracy and stability of the transmission connection. Attached Figure Description

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0030] Figure 1 This is a pre-assembly diagram of the drive unit, elastic adjustment component, and limit switch;

[0031] Figure 2 This is a 3D schematic diagram of the support frame;

[0032] Figure 3 It is a three-dimensional schematic diagram of the drive device, elastic adjustment component and limit switch assembled together;

[0033] Figure 4 yes Figure 3 Another perspective 3D illustration (mainly showing the elastic adjustment component mounted on the bracket):

[0034] Figure 5 It is a stereoscopic diagram from the first-person perspective of a rotating camera;

[0035] Figure 6 This is a three-dimensional schematic diagram of a drive device with elastic adjustment components and a rotating mirror pre-assembled on the HUD base.

[0036] Figure 7 This is a three-dimensional schematic diagram of a drive device with an elastic adjustment element inserted into the first slot at a set angle;

[0037] Figure 8 This is a three-dimensional schematic diagram showing the other end of the elastic adjustment component connected to the set position of the HUD bottom shell (the bracket and transmission part of the drive device are not shown).

[0038] Figure 9 This is a three-dimensional schematic diagram of a drive device with elastic adjustment components and a rotating mirror assembled on the HUD base (the limiting plate and the third fastener are not shown).

[0039] Figure 10 It is a three-dimensional schematic diagram of the drive device with elastic adjustment and the rotating mirror assembled on the HUD base (showing the limit plate and the third fastener);

[0040] Figure 11 yes Figure 10 A magnified view of the area at point F;

[0041] Figure 12 yes Figure 10 A magnified view of a portion of point G.

[0042] Figure label:

[0043] 1-Drive unit; 11-Power unit; 12-Bracket; 121-Protrusion; A-Smooth part; 122-Settling area; 123-Bracket groove; D-Axial direction; E-Up and down floating direction; 13-Transmission unit;

[0044] 2-Elastic adjusting element; B-One end; C-The other end;

[0045] 3-Rotating mirror; 31-Rotating mirror gear; 32-Touching structure; 33-Connecting shaft;

[0046] 4 - First card slot structure; F - Enlarged view icon number;

[0047] 5 - Second card slot structure; G - Enlarged view icon;

[0048] 6-HUD back cover;

[0049] 7-Limit switch;

[0050] 81-First fastener; 82-Second fastener; 83-Third fastener;

[0051] 9-Limiting plate. Detailed Implementation

[0052] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0053] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0054] Reference Figures 1 to 12 A head-up display (HUD) rotating mirror transmission control structure includes a drive device 1, an elastic adjustment member 2, and a rotating mirror 3. The elastic adjustment member 2 is disposed on the drive device 1. The drive device 1 is disposed on the HUD base shell 6, and the elastic adjustment member 2 is connected to the HUD base shell 6. The rotating mirror 3 is disposed on the HUD base shell 6, and the rotating mirror 3 is (transmittedly) connected to the drive device 1. The elastic adjustment member 2 is used to adjust the (transmittedly) connection between the drive device 1 and the rotating mirror 3 as needed. Here, HUD stands for Head-Up Display; the HUD base shell can also be called the "HUD body".

[0055] Reference Figures 1 to 12 In one embodiment, the drive device 1 includes a power device 11, a bracket 12, and a transmission part 13; the power device 11 and the transmission part 13 are both disposed on the bracket 12, the power device 11 is connected to the transmission part 13 and is used to drive the transmission part 13 to rotate; the bracket 12 is disposed on the HUD bottom shell 6.

[0056] Reference Figures 1 to 12 In one embodiment, the power unit 11 is a motor; the transmission part 13 is a worm gear; both the motor and the worm gear are mounted on the bracket 12; the motor and the worm gear are connected by a transmission. The rotating mirror 3 is also connected by a transmission to the worm gear. When the angle of the rotating mirror 3 needs to be adjusted, the motor drives the worm gear to rotate according to a preset number of steps, achieving precise angle adjustment of the rotating mirror 3 through precise transmission.

[0057] Reference Figures 1 to 12 In one embodiment, the motor is detachably fixed to the bracket 12; preferably, the motor is locked to the bracket 12 by a first fastener 81 (such as a screw), wherein the rotating part (such as a rotating shaft) of the motor is connected to the transmission part 13 (such as a worm gear).

[0058] Reference Figures 1 to 12 In one embodiment, the bracket 12 is provided with a bracket groove 123 for accommodating the transmission part 13 (such as a worm gear).

[0059] Reference Figures 1 to 12In one embodiment, the rotating mirror transmission control structure further includes a first slot structure 4; the first slot structure 4 is disposed on the HUD bottom shell 6;

[0060] The bracket 12 has a protrusion 121 on its side; the bracket 12 is connected to the first slot structure 4 through the protrusion 121.

[0061] Reference Figure 2 In one embodiment, both the left and right ends of the protrusion 121 are rounded portions A.

[0062] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 and Figure 10 In one embodiment, one end B of the elastic adjustment member 2 is disposed in the bracket 12 (e.g., one end is inserted into the bracket 12), and the other end C can be connected (e.g., abutted) to a set position on the HUD base shell 6. With the presence of this elastic adjustment member 2, after the bracket 12 is installed on the HUD base shell 6, the bracket 12 can slightly float in the axial direction (up and down) (see reference). Figure 3 (Illustration of axial direction D and vertical floating direction E in the diagram) When the meshing connection between the worm and the rotating mirror 3 has a gap due to machining error or wear, the elastic force of the elastic adjustment element 2 will cause the worm and the rotating mirror 3 to mesh tightly (that is, under the action of the elastic force of the elastic adjustment element 2, the excess gap between the meshing connection between the worm and the rotating mirror 3 is eliminated), thereby improving the accuracy and stability of the meshing connection.

[0063] Reference Figure 1 In one embodiment, the elastic adjusting member 2 is a bent spring sheet.

[0064] Reference Figures 1 to 12 In one embodiment, the rotating mirror 3 is provided with a rotating mirror gear 31, which is connected to the transmission part 13. Preferably, the power device 11 is a motor, the transmission part 13 is a worm gear, the motor is connected to the worm gear, and the rotating mirror gear 31 is meshed with the worm gear. After the drive device 1, the elastic adjustment member 2, and the rotating mirror 3 are installed, the elastic adjustment member 2 continuously applies an upward preload to ensure that the worm gear and the rotating mirror gear 31 are tightly meshed. When the motor drives the worm gear to rotate, the worm gear drives the rotating mirror 3 to move, thereby realizing the angle adjustment of the rotating mirror 3.

[0065] Reference Figures 1 to 12In one embodiment, the first slot structure 4 is adapted to the protrusion 121; the bracket 12 is connected to the first slot structure 4 on the HUD bottom shell 6 by means of the protrusion 121 on its side, replacing the traditional screw fixing. During installation, simply insert the bracket 12 into the lower HUD bottom shell 6 at a set angle (e.g., Figure 7 The protrusion 121 is inserted into the first slot structure 4, and then the bracket 12 is leveled to fix the bracket 12 onto the HUD base shell 6. After connection, the protrusion 121 can serve as a fulcrum. When appropriate, under the elastic force of the elastic adjustment member 2, the bracket 12 can be finely adjusted around the fulcrum (the position of the worm gear in the bracket 12 is also finely adjusted), thereby ensuring tight meshing between the worm gear and the rotating mirror gear 31.

[0066] Reference Figures 1 to 12 In one embodiment, the rotating mirror drive control structure further includes a limit switch 7; the limit switch 7 is disposed on the bracket 12; the rotating mirror 3 is provided with a touch structure 32; the touch structure 32 is used to trigger the limit switch 7. Preferably, the limit switch 7 and the motor are electrically connected to the controller of the head-up display system and are controlled by the controller.

[0067] The touch structure 32 and the limit switch 7 can be used to calibrate a reference. During the calibration phase, the rotating mirror 3 moves under the drive of the worm gear. Then, the touch structure 32 switches to trigger the limit switch 7, the motor stops rotating and calibrates the origin, and the initial position of the rotating mirror 3 is determined to ensure the accuracy of subsequent angle adjustments of the rotating mirror 3.

[0068] The touch structure 32 and the limit switch 7 can be used for mechanical position protection. If the rotating mirror 3 abnormally touches the limit switch 7 during the non-calibration stage, the limit switch 7 will detect the extreme position of the rotating mirror 3. In a timely manner, the limit switch 7 will transmit the detected information to the controller, and the controller will control the motor to stop running, which can prevent mechanical damage caused by the rotating mirror moving beyond the limit.

[0069] Reference Figure 5 In one embodiment, the touch structure 32 is a protrusion on the rotating mirror 3, and the protrusion is positioned adjacent to the rotating mirror gear 31.

[0070] Reference Figures 1 to 12 In one embodiment, the limit switch 7 is detachably mounted on the bracket 12; preferably, the bracket 12 is provided with a placement area 122, and the limit switch 7 is locked and fixed on the placement area 122 by a second fastener 82 (such as a screw).

[0071] Reference Figures 1 to 12In one embodiment, the rotating mirror transmission control structure further includes a second slot structure 5; the second slot structure 5 is disposed on the HUD bottom shell 6;

[0072] The rotating mirror 3 has a connecting shaft 33 on its side; the rotating mirror 3 is connected to the second slot structure 5 through the connecting shaft 33.

[0073] Reference Figures 1 to 12 In one embodiment, a limiting component is detachably provided on the second slot structure 5; the limiting component includes a limiting piece 9 and a third fastener 83; the limiting piece 9 is provided on the second slot structure 5 through the third fastener 83 (such as a screw), and limits the connecting shaft 33 in the second slot structure 5, which can effectively prevent the connecting shaft 33 from coming out of the second slot structure 5 and improve the stability of the rotating mirror 3 during the angle adjustment process.

[0074] Reference Figures 1 to 12 In one embodiment, the rotating mirror transmission control structure for a heads-up display of the present invention has at least the following advantages:

[0075] (1) In this utility model, one end of the elastic adjustment element 2 (such as a bent spring) is inserted into the bottom of the bracket 12, and the other end is connected to the HUD bottom shell 6 (such as abutting). After the elastic adjustment element 2, bracket 12, worm gear, motor and rotating mirror 3 are installed, the elastic adjustment element 2 continuously applies an upward preload, which can maintain the tight meshing of the worm gear and the rotating mirror gear 31. This design can reduce transmission backlash and improve the control accuracy of the angle adjustment of the rotating mirror 3.

[0076] (2) The bracket 12 of this utility model has protrusions 121 on both sides, which can realize the screwless fixing of the bracket 12, effectively simplifying the installation process of the bracket 12 and saving assembly time; at the same time, this design, combined with the use of the elastic adjustment component 2, can ensure that the bracket 12 has room for up and down floating adjustment in the axial direction, and ensure that the worm and the rotating mirror gear 31 can be tightly meshed under the action of the elastic force of the elastic adjustment component 2, effectively avoiding excessive meshing gap between the worm and the rotating mirror gear 31.

[0077] (3) The "motor, worm gear, elastic adjustment component 2, limit switch 7" of this utility model are integrated on the bracket 12 and can form a modular component with the bracket 12. It can be connected to the HUD bottom shell 6 through a standardized interface (such as the first slot structure 4), which can be adapted to the rotating mirror system of different models of HUD, and there is no need to redesign the installation position of the limit switch.

[0078] The "motor, worm gear, elastic adjustment component 2, limit switch 7" of this utility model are integrated on the bracket 12, which can form a modular component with the bracket 12. It can be directly assembled with the bracket 12 onto different HUD base shells (the HUD base shell refers to the HUD base shell 6 with the first slot structure 4), which improves the versatility of the component and facilitates mass production and maintenance.

[0079] In this patent, the head-up display system can be simply referred to as "head-up display". Other details of the head-up display system can be found in the prior art, and will not be repeated here.

[0080] Other aspects of the head-up display rotating mirror transmission control structure described in this utility model can be found in the prior art, and will not be repeated here.

[0081] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A head-up display turning mirror drive control structure, characterized by, It includes a drive unit, an elastic adjustment member, and a rotating mirror; the elastic adjustment member is disposed on the drive unit; the drive unit is disposed on the HUD bottom shell, and the elastic adjustment member is connected to the HUD bottom shell; the rotating mirror is disposed on the HUD bottom shell, and the rotating mirror is connected to the drive unit, and the elastic adjustment member is used to adjust the connection between the drive unit and the rotating mirror as needed.

2. The turning mirror drive control structure for head-up display according to claim 1, wherein The drive device includes a power unit, a bracket, and a transmission unit; the power unit and the transmission unit are both mounted on the bracket, and the power unit is connected to the transmission unit to drive the transmission unit to rotate; the bracket is mounted on the bottom shell of the HUD.

3. The control structure of claim 2, wherein, The power unit is a motor; the transmission part is a worm gear; both the motor and the worm gear are mounted on the bracket; the motor and the worm gear are connected by a transmission.

4. The turning mirror drive control structure for head-up display according to claim 2, wherein The rotating mirror transmission control structure also includes a first slot structure; the first slot structure is disposed on the bottom shell of the HUD. The bracket has a protrusion on its side; the bracket is connected to the first slot structure through the protrusion.

5. The control structure for a turning mirror of a head-up display according to claim 4, wherein Both ends of the protrusion are rounded.

6. The turning mirror drive control structure for head-up display according to claim 2, wherein One end of the elastic adjustment element is disposed in the bracket, and the other end can be connected to a set position on the HUD bottom shell.

7. The control structure for a turning mirror of a head-up display according to claim 2, wherein The rotating mirror is equipped with a rotating mirror gear, which is connected to the transmission unit for transmission.

8. The control structure for a turning mirror of a head-up display according to claim 2, wherein The rotating mirror transmission control structure also includes a limit switch; the limit switch is disposed on the bracket. The rotating mirror is equipped with a touch structure; the touch structure is used to trigger the limit switch.

9. The turning mirror drive control structure for head-up display according to claim 1, wherein The rotating mirror transmission control structure also includes a second slot structure; the second slot structure is disposed on the bottom shell of the HUD. The rotating mirror has a connecting shaft on its side; the rotating mirror is connected to the second slot structure through the connecting shaft.

10. The control structure of a turning mirror of a head-up display according to any one of claims 1 to 9, characterized in that, The elastic adjusting element is a bent spring.

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