Adjusting device and head-up display device

Abstract

The application relates to an adjusting device and a head-up display device. The adjusting device is used for adjusting an optical reflection element of the head-up display device, and comprises a base, a support, a rotating shaft, a first shifting rod and a second shifting rod. The support is slidably connected with the base and is used for mounting the optical reflection element. The rotating shaft is rotatably connected with the base. The first shifting rod and the second shifting rod are fixedly connected with the rotating shaft respectively and are drivingly connected with the support respectively. The first shifting rod and the second shifting rod are arranged in the axial direction of the rotating shaft. When the rotating shaft rotates, the first shifting rod and the second shifting rod can synchronously move with the rotating shaft and respectively transmit the movement to the support.

Description

Technical Field

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

[0002] A head-up display (HUD) projects images containing vehicle driving information, navigation information, and other relevant data in front of the driver, allowing the driver to access this information. Optical reflectors are positioned within the HUD's image light path; changes in the position of these reflectors alter the propagation of the image light.

[0003] During the position adjustment of an optical reflector, the optical reflector may undergo unexpected attitude changes, thereby affecting the stability of the position adjustment. Summary of the Invention

[0004] Some embodiments of this application provide an adjustment device for a head-up display device. The adjustment device includes a base, a bracket, a rotating shaft, a first lever, and a second lever. The bracket is slidably connected to the base and is used to mount an optical reflector. The rotating shaft is rotatably connected to the base. The first lever and the second lever are respectively fixedly connected to the rotating shaft and form a transmission relationship with the bracket. The first lever and the second lever are spaced apart along the axial direction of the rotating shaft. When the rotating shaft rotates, the first lever and the second lever can move synchronously with the rotating shaft and transmit movement to the bracket respectively. The first lever and the second lever are driven by the same rotating shaft and transmit movement to the bracket at different positions on the bracket, which can reduce the asynchronous movement between different parts of the bracket and the resulting attitude changes, and improve the stability during the position adjustment process of the optical reflector.

[0005] Some embodiments of this application also provide a head-up display device. The head-up display device includes a housing, an image generating unit, an optical reflector, and an adjustment device. The image generating unit is connected to the housing. The base of the adjustment device is connected to the housing. The optical reflector is connected to the bracket of the adjustment device and is located in the optical path of the image light emitted by the image generating unit. Attached Figure Description

[0006] Figure 1 A schematic diagram of the structure of a head-up display device provided in some embodiments of this application is shown.

[0007] Figure 2 The diagram shows optical path schematics when the first optical reflector is located at different positions in some embodiments of this application.

[0008] Figure 3 A schematic diagram of the overall structure of the adjustment device provided in some embodiments of this application is shown.

[0009] Figure 4 It shows Figure 3 A schematic diagram of the transmission component in the adjustment device shown.

[0010] Figure 5 It shows Figure 3 A schematic diagram of the support and components mounted on the support in the adjustment device shown.

[0011] Figure 6 It shows Figure 3 A schematic diagram of the base and components mounted on the base in the adjustment device shown.

[0012] Figure 7 It shows Figure 3 A schematic diagram of the assembly structure of the adjustment device shown.

[0013] Figure 8 It shows Figure 3 A schematic diagram of the assembly structure of the elastic component in the adjustment device shown.

[0014] Figure 9 A schematic diagram showing the arrangement of the second elastic element in the adjustment device in some embodiments of this application is shown.

[0015] Figure 10 It shows Figure 3 A schematic diagram of the drive component in the adjustment device shown.

[0016] Figure 11 It shows Figure 3 A schematic diagram of the transmission structure between the moving part and the drive lever in the adjustment device shown. Detailed Implementation

[0017] Head-up displays (HUDs) create a virtual image in front of the driver using image light. Different application scenarios can employ different virtual image distances. For example, the virtual image distance for a windshield head-up display (W-HUD) can be 2 to 3 meters, while the virtual image distance for an augmented reality head-up display (AR-HUD) can be 7.5 to 15 meters.

[0018] In one related structure, a small reflector is mounted on the housing of the head-up display device via a fixed bracket. The position of the small reflector remains unchanged during use and is used to change the propagation direction of the image light. The large reflector can be rotated to change the position of the image light directed toward the windshield, thereby adjusting the vertical position of the virtual image in the driver's field of vision.

[0019] The first optical reflector in this application is capable of translation. When the position of the first optical reflector changes, the spatial relationship between the first optical reflector and other optical components in the optical path changes, and the propagation path of the image light changes accordingly, thereby adjusting the virtual image distance. The position adjustment of the first optical reflector and the position adjustment of the second optical reflector can correspond to different display parameters, enabling the head-up display device to adjust the virtual image distance and the vertical position of the virtual image in the driver's field of vision according to display requirements.

[0020] See Figure 1 This application provides a head-up display device 300 in some embodiments. The head-up display device 300 includes a housing 320, an image generation unit 340, a first optical reflector 130, a second optical reflector 360, and an adjustment device 100. Figure 1 The outline of housing 320 is indicated by a dashed line, and windshield 380 is located outside housing 320.

[0021] The image generation unit 340, the first optical reflector 130, the second optical reflector 360, and the adjustment device 100 are disposed within the housing 320. The first optical reflector 130 can be a small reflector, and the second optical reflector 360 can be a large reflector.

[0022] The image generation unit 340 is used to generate image light. The image light generated by the image generation unit 340 is reflected by the first optical reflector 130 and the second optical reflector 360 and then directed toward the windshield 380. The windshield 380 reflects the image light toward the driver's eye point area, enabling the driver to observe a virtual image located in front of the windshield 380.

[0023] The first optical reflector 130 is connected to the adjustment device 100, which is used to move the first optical reflector 130 horizontally. After the position of the first optical reflector 130 changes, the spatial relationship between the first optical reflector 130 and the image generation unit 340 and the second optical reflector 360 changes, and the propagation path of the image light changes accordingly, thereby changing the distance of the virtual image formed by the head-up display device 300.

[0024] The second optical reflector 360 can be rotated to change the position of the image light projected onto the windshield 380, thereby adjusting the vertical position of the virtual image in the driver's field of vision. Therefore, the translation of the first optical reflector 130 can be used to adjust the distance to the virtual image, and the rotation of the second optical reflector 360 can be used to adjust the vertical position of the virtual image. The adjustment range of the first optical reflector 130 and the second optical reflector 360 can be set according to the optical design of the head-up display device 300.

[0025] The head-up display device 300 may also include a control system. The control system is used to control the operation of the adjustment device 100 to adjust the position of the first optical reflector 130. The direction of movement and the stroke of the first optical reflector 130 can be set according to the optical characteristics of the windshield 380, the magnification of the optical system, and the optical path design inside the head-up display device 300.

[0026] See Figure 2 , Figure 2 The diagram illustrates the changes in the optical path within the head-up display device 300 when the first optical reflector 130 is in different positions. The first optical reflector 130 is capable of translation between a first position and a second position, which are used to indicate two different positions within the movement stroke of the first optical reflector 130.

[0027] Figure 2 In the diagram, the outline of the first optical reflector 130 in the first position is shown by a solid line, and the outline of the first optical reflector 130 in the second position is shown by a dashed line. The optical path corresponding to the first optical reflector 130 in the first position is shown by a solid line with an arrow, and the optical path corresponding to the first optical reflector 130 in the second position is shown by a dashed line with an arrow. The outline of the housing 320 is indicated by a dashed line.

[0028] The image light is reflected by the first optical reflector 130 and the second optical reflector 360 to the windshield 380, and then propagates along the line marked with an arrow towards the driver's eye point area. The driver observes a virtual image along the reverse extension direction of the image light reflected by the windshield 380. Figure 2 The rectangular outline on the right represents the virtual image plane.

[0029] When the first optical reflector 130 is moved from the first position to the second position, the spatial relationship between the first optical reflector 130, the image generation unit 340, and the second optical reflector 360 changes, the corresponding optical path changes accordingly, and the position of the virtual image surface also changes accordingly, thereby changing the distance of the virtual image observed by the driver.

[0030] The position of the first optical reflector 130 can be continuously adjusted within the travel distance, and the first position and the second position do not constitute a limitation on the position where the first optical reflector 130 can stay. When the first optical reflector 130 is located at different positions within the travel distance, it can correspond to different virtual image distances.

[0031] In a specific optical system, the movement of the first optical reflector 130 is approximately 0 mm to 30 mm, corresponding to a virtual image distance of approximately 2 m to 20 m. When the first optical reflector 130 is at the 0 mm position, the virtual image distance is approximately 20 m; when the first optical reflector 130 moves to the approximately 15 mm position, the virtual image distance is approximately 11 m; and when the first optical reflector 130 moves to the approximately 30 mm position, the virtual image distance is approximately 2 m.

[0032] In this specific optical system, when the first optical reflector 130 moves by about 1 mm, the virtual image distance can change by about 0.6 m. The correspondence between the movement of the first optical reflector 130 and the virtual image distance is related to the optical system of the head-up display device 300, and these values ​​are used to illustrate a specific implementation.

[0033] The first optical reflector 130 is supported by a movable bracket. The bracket has certain spatial dimensions, and the movement of different positions of the bracket will affect the movement posture of the first optical reflector 130. When the movement of different parts of the bracket is not synchronized, the bracket may produce unexpected posture changes while producing the expected translation, causing the actual position or posture of the first optical reflector 130 to deviate from the set state.

[0034] See Figure 3 , Figure 3 The overall structure of the adjustment device 100 is shown. The adjustment device 100 includes a base 110 and a bracket 120. The base 110 forms the mounting base of the adjustment device 100, and the bracket 120 is slidably connected to the base 110.

[0035] The first optical reflector 130 is mounted on the bracket 120. When the bracket 120 moves relative to the base 110, the first optical reflector 130 translates with the bracket 120 relative to the base 110.

[0036] The base 110 remains relatively fixed during adjustment, and the bracket 120 constitutes a movable component in the adjustment device 100. The first optical reflector 130 and the components connected to the bracket 120 can move together with the bracket 120.

[0037] The adjustment device 100 also includes a transmission structure for driving the support 120 to move and a guide structure for limiting the direction of movement of the support 120.

[0038] See Figure 4 , Figure 4 The transmission assembly in the adjustment device 100 is shown. The transmission assembly includes a rotating shaft 140, a first lever 142, a second lever 144, and a drive lever 188. The rotating shaft 140 is rotatably connected to the base 110 via a bearing assembly 148.

[0039] The first lever 142 and the second lever 144 are fixedly connected to the rotating shaft 140 and are spaced apart along the axial direction of the rotating shaft 140. The drive lever 188 is fixedly connected to the rotating shaft 140. After receiving the drive motion, the drive lever 188 drives the rotating shaft 140 to rotate, and the first lever 142 and the second lever 144 rotate synchronously with the rotating shaft 140.

[0040] The rotating shaft 140 has a shaft segment 1402 that mates with the first lever 142 and the second lever 144. The cross-section of the shaft segment 1402 is non-circular. The first lever 142 has a first mating hole 1422, and the second lever 144 has a second mating hole 1442. The first mating hole 1422 and the second mating hole 1442 are respectively adapted to the shaft segment 1402. The shaft segment 1402 passes through the first mating hole 1422 and the second mating hole 1442, thereby restricting the rotation of the first lever 142 and the second lever 144 relative to the rotating shaft 140.

[0041] In the illustrated structure, shaft segment 1402 can have a hexagonal cross-section. The end of the rotating shaft 140 that mates with the bearing assembly 148 can have a circular cross-section. The circular end is used to form a rotational support, and the non-circular shaft segment 1402 is used to transmit torque to the first lever 142 and the second lever 144. The fixed connection between the first lever 142 and the second lever 144 and the rotating shaft 140 is not limited to the mating method of the non-circular shaft segment and the mating hole. For example, the rotating shaft 140 can have a circular shaft segment, and the first lever 142 and the second lever 144 can be fixed to the rotating shaft 140 by interference fit or other connection methods that can limit relative rotation.

[0042] The first lever 142 and the second lever 144 rotate with the same rotating shaft 140, so that the first lever 142 and the second lever 144 can maintain synchronous movement.

[0043] See Figure 5 , Figure 5 The structure of the bracket 120 and the components mounted on the bracket 120 is shown. The first optical reflector 130, the first linear bearing 154, the second linear bearing 156 and the first elastic element 160 are connected to the bracket 120.

[0044] The first optical reflector 130 is mounted on the bracket 120, allowing the first optical reflector 130 to translate relative to the base 110 along with the bracket 120. The first optical reflector 130 can be fixedly connected to the bracket 120 by adhesive bonding. Alternatively, the first optical reflector 130 can be connected in other ways that keep the first optical reflector 130 relatively fixed to the bracket 120.

[0045] The first linear bearing 154 and the second linear bearing 156 are spaced apart along a direction intersecting the sliding direction of the bracket 120. The first linear bearing 154 and the second linear bearing 156 are connected to the bracket 120 and can move together with the bracket 120.

[0046] The first linear bearing 154 and the second linear bearing 156 can be fixed to the bracket 120 by adhesive bonding.

[0047] The first elastic element 160 is disposed between the first lever 142 and the bracket 120. The first elastic element 160 may be a metal spring. In the assembled state, the first elastic element 160 is in an elastically deformable state and abuts against the first lever 142 and the bracket 120 respectively.

[0048] The first elastic element 160 applies an elastic force to the first lever 142 toward the corresponding transmission part of the bracket 120, keeping the first lever 142 in contact with the bracket 120. When the first lever 142 moves in one direction, it can transmit force to the bracket 120; when the first lever 142 changes direction, the first elastic element 160 compensates for the mechanical clearance between the first lever 142 and the bracket 120 through elastic deformation, thereby reducing the idle stroke generated during the reversing process.

[0049] The second lever 144 is connected to the bracket 120 in a transmission manner. The second lever 144 and the first lever 142 are spaced apart along the axis of the rotating shaft 140. When the rotating shaft 140 rotates, the first lever 142 and the second lever 144 rotate synchronously with the rotating shaft 140 and transmit motion to the bracket 120 at different positions respectively. After being driven by the first lever 142 and the second lever 144, the bracket 120 moves relative to the base 110 along a set sliding direction.

[0050] The first optical reflector 130, the first linear bearing 154, the second linear bearing 156, and the first elastic element 160 are located on one side of the bracket 120 and can move together with the bracket 120. Therefore, the bracket 120 constitutes the moving side main body of the adjustment device 100.

[0051] See Figure 6 , Figure 6 The base 110 and the components disposed on the base 110 are shown. A first guide shaft 1502, a second guide shaft 1522, a plurality of support shafts 174 and a drive assembly 180 are connected to the base 110.

[0052] The first guide shaft 1502 and the second guide shaft 1522 extend along the sliding direction of the bracket 120 relative to the base 110 and are spaced apart along directions intersecting the sliding direction. The first guide shaft 1502 is used for sliding engagement with the first linear bearing 154, and the second guide shaft 1522 is used for sliding engagement with the second linear bearing 156. When the bracket 120 moves relative to the base 110, the first linear bearing 154 moves along the first guide shaft 1502, and the second linear bearing 156 moves along the second guide shaft 1522.

[0053] The first guide member 150 can be a first guide shaft 1502, and the second guide member 152 can be a second guide shaft 1522. The first linear bearing 154 is slidably engaged with the first guide shaft 1502, and the second linear bearing 156 is slidably engaged with the second guide shaft 1522. The first guide member 150 and the second guide member 152 guide the bracket 120 at two intervals to limit the direction of movement of the bracket 120 relative to the base 110.

[0054] The base 110 is also connected to multiple support shafts 174. Figure 6 The structure shown has four support shafts 174. The support shafts 174 extend along the sliding direction of the bracket 120 relative to the base 110 and are used to mount the second elastic element 172 in the elastic assembly 170.

[0055] The first guide shaft 1502, the second guide shaft 1522, and the plurality of support shafts 174 perform different functions in the adjusting device 100. The first guide shaft 1502 and the second guide shaft 1522 define the direction of movement of the bracket 120 through sliding engagement with the first linear bearing 154 and the second linear bearing 156; the plurality of support shafts 174 are used to install and support the second elastic member 172.

[0056] The drive component 180 is connected to the base 110. Figure 6 In the structure shown, the drive assembly 180 may include a stepper motor and a lead screw drive structure. The drive assembly 180 is used to generate the driving force required to adjust the position of the first optical reflector 130.

[0057] The drive assembly 180 is not limited to a lead screw drive structure. The drive assembly 180 can also employ other transmission structures capable of driving the rotating shaft 140 to rotate. For example, the driving force can be transmitted to the rotating shaft 140 through a worm gear drive structure, and the mechanical clearance in the corresponding transmission structure can be reduced through an elastic preload structure.

[0058] The base 110 serves as the fixed-side mounting base for the adjustment device 100, supporting the first guide shaft 1502, the second guide shaft 1522, the plurality of support shafts 174, and the drive assembly 180. When the bracket 120 moves relative to the base 110, the first guide shaft 1502, the second guide shaft 1522, the plurality of support shafts 174, and the drive assembly 180 remain in their mounting positions relative to the base 110.

[0059] See Figure 7 , Figure 7 The assembly structure of the adjustment device 100 is shown. The bracket 120 is mounted on the base 110 and is capable of translation relative to the base 110. The first optical reflector 130 is connected to the bracket 120 and is capable of moving with the bracket 120 relative to the base 110.

[0060] A guide structure is provided between the bracket 120 and the base 110. The guide structure is used to limit the direction of movement of the bracket 120 relative to the base 110, so that the bracket 120 translates in the set direction.

[0061] The adjustment device 100 also includes a transmission structure. The transmission structure forms a transmission engagement with the support 120 and is used to transmit motion to the support 120. After receiving the motion output from the drive assembly 180, the transmission structure drives the support 120 to move relative to the base 110.

[0062] Figure 5 The movable side structure shown is Figure 6 After the base side structure shown is assembled, the first optical reflector 130, the bracket 120 and the components connected to the bracket 120 form a part that can move relative to the base 110; the base 110 and the components connected to the base 110 form a relatively fixed part.

[0063] When the bracket 120 moves relative to the base 110, the first optical reflector 130 translates with the bracket 120. The change in position of the first optical reflector 130 causes a change in its position within the head-up display device 300, thereby altering the propagation path of the image light.

[0064] The adjustment device 100 also includes an elastic component 170 disposed between the base 110 and the support 120. The elastic component 170 is used to apply an elastic force to the support 120 during the movement of the support 120.

[0065] See Figure 8 , Figure 8 The assembly structure of the elastic component 170 is shown. The elastic component 170 is disposed between the base 110 and the bracket 120 and includes a plurality of second elastic elements 172. The second elastic elements 172 may be compression springs.

[0066] The second elastic element 172 is sleeved on the support shaft 174. The support shaft 174 extends along the sliding direction of the bracket 120 relative to the base 110 and is used to define the installation position of the second elastic element 172. The bracket 120 is provided with a through hole through which the support shaft 174 passes, and the support shaft 174 passes through the through hole, with a gap between the inner wall of the through hole and the support shaft 174.

[0067] Figure 8 The structure shown includes four second elastic elements 172 and four support shafts 174. The four second elastic elements 172 are respectively sleeved on the corresponding support shafts 174 and distributed at different positions on the bracket 120.

[0068] The adjusting device 100 also includes a limiting member 176. The limiting member 176 is connected to the bracket 120 and is used to press the second elastic member 172. Figure 8 In the structure shown, the limiting member 176 can be a cover plate. The limiting member 176 is not limited to a cover plate structure. The limiting member 176 can be replaced by a fastener and a washer disposed at the end of the support shaft 174, with the washer pressing against the second elastic member 172 to prevent the second elastic member 172 from disengaging from its corresponding installation position along the axial direction of the support shaft 174. The adjusting device 100 is provided with two cover plates, which are located on both sides of the bracket 120 and connected to the bracket 120.

[0069] After the second elastic element 172 is installed onto the corresponding support shaft 174, the cover plate presses against the second elastic element 172 from one side. After the adjustment device 100 is assembled, the second elastic element 172 is in an elastic deformation state and can apply an elastic force to the bracket 120.

[0070] The support shaft 174 is used to define the installation direction of the second elastic element 172, and the limiting element 176 is used to prevent the second elastic element 172 from disengaging from the corresponding installation position along the axis of the support shaft 174. The support shaft 174 and the limiting element 176 cooperate to keep the second elastic element 172 in the corresponding installation state during the movement of the bracket 120.

[0071] Multiple second elastic elements 172 are distributed at different positions of the bracket 120 and apply elastic force to the bracket 120 at different positions.

[0072] See Figure 9 , Figure 9 The arrangement of the second elastic members 172 in the adjusting device 100 is shown. The adjusting device 100 includes four second elastic members 172. The four second elastic members 172 are distributed at different positions on the bracket 120 and are respectively sleeved on the corresponding support shaft 174. After the adjusting device 100 is assembled, the second elastic members 172 are in a compressed state and have preload, so that the second elastic members 172 can continuously apply elastic force to the bracket 120.

[0073] The first guide 150 and the second guide 152 are used to define the direction of movement of the support 120 relative to the base 110. The four second elastic members 172 apply elastic forces at different positions of the support 120 and cooperate with the guiding constraints formed by the first guide 150 and the second guide 152 to limit the support 120 from generating unintended swaying or twisting during movement.

[0074] In one specific installation method, the adjustment device 100 is installed on the head-up display device 300 at an angle relative to the bottom surface of the head-up display device 300, with the angle between the adjustment device 100 and the bottom surface of the head-up display device 300 being approximately 60°. The bracket 120, the first optical reflector 130, and components that move together with the bracket 120 are subjected to gravity. Corresponding to this installation state, the component of gravity along the sliding direction of the bracket 120 relative to the base 110 can be determined by multiplying gravity by sin60°.

[0075] The four second elastic elements 172 together apply an elastic force to the support 120 in the opposite direction to the gravity component, so as to counteract at least part of the gravity acting on the support 120, the first optical reflector 130 and the components that move together with the support 120.

[0076] The effective travel of the support 120 is approximately 0 mm to 30 mm. When the support 120 is positioned close to the base 110, the compression of the four second elastic elements 172 is small, and the elastic force exerted by the four second elastic elements 172 on the support 120 is correspondingly small. As the support 120 moves away from the base 110, the compression of the four second elastic elements 172 increases, and the elastic force exerted by the four second elastic elements 172 on the support 120 increases accordingly. The four second elastic elements 172 remain compressed within the effective travel of the support 120, ensuring that the support 120 is subjected to elastic forces at different adjustment positions.

[0077] Within the effective travel range, the resultant force of the elastic force exerted on the support 120 by the four second elastic elements 172 remains greater than the corresponding gravity component, so that the support 120 is kept under the elastic constraint of the second elastic elements 172 at different adjustment positions.

[0078] The center of gravity of the moving component may not coincide with the line connecting the two corresponding guide positions of the first guide 150 and the second guide 152, and there may be an offset distance between the center of gravity of the moving component and this line. The moving component includes a bracket 120, a first optical reflector 130, and components that move together with the bracket 120. When this offset exists, the moving component will generate a corresponding torque after being subjected to gravity.

[0079] Four second elastic elements 172 are distributed at different positions on the moving assembly. When the center of gravity of the moving assembly is biased to one side, the second elastic element 172 on the corresponding side exerts a larger force on the support 120, while the second elastic element 172 on the other side exerts a relatively smaller force on the support 120. The second elastic elements 172 at different positions generate corresponding forces and torques, which work together with the guiding constraints formed by the first guide element 150 and the second guide element 152 to maintain the torque balance of the moving assembly.

[0080] The second elastic element 172 continuously applies an elastic force to the bracket 120, so that the bracket 120 remains elastically constrained during movement and can reduce the impact of vehicle vibration on the movement state of the bracket 120.

[0081] See Figure 10 , Figure 10 The structure of the drive assembly 180 is shown. The drive assembly 180 includes a drive member 182, a lead screw 184, and a moving member 186. The drive member 182 is drively connected to the lead screw 184, and the moving member 186 is threadedly engaged with the lead screw 184.

[0082] Figure 10 In the structure shown, the driving component 182 can be a stepper motor. When the driving component 182 is working, it drives the lead screw 184 to rotate around the axis of the lead screw 184.

[0083] The moving component 186 may include a lead screw nut 1862 and a slider 1864. The lead screw nut 1862 is threadedly engaged with the lead screw 184, and the slider 1864 is connected to the lead screw nut 1862. When the lead screw 184 rotates, the lead screw nut 1862 moves along the axis of the lead screw 184, thereby driving the slider 1864 to move, thus converting the rotational motion output by the driving component 182 into the linear motion of the moving component 186.

[0084] The movable member 186 transmits motion to the drive lever 188. When the movable member 186 moves along the axis of the lead screw 184, it drives the drive lever 188 to move, which in turn drives the rotating shaft 140 to rotate. The rotating shaft 140 transmits motion to the bracket 120 through the first lever 142 and the second lever 144, causing the bracket 120 to translate relative to the base 110.

[0085] Figure 10 In the structure shown, the lead screw 184, lead screw nut 1862, and slider 1864 form a transmission structure with a self-locking function. After the driving member 182 stops working, this transmission structure can restrict the moving member 186 from moving along the axial direction of the lead screw 184, thereby keeping the moving member 186 in the corresponding position.

[0086] After the movable part 186 is held in position, the drive lever 188, the rotating shaft 140, the first lever 142 and the second lever 144 maintain the corresponding transmission state, so that the bracket 120 and the first optical reflector 130 are held in the adjusted position.

[0087] Figure 10 In the specific structure shown, one step of the driving member 182 corresponds to a movement distance of approximately 0.01 mm for the slider 1864. The movement distance of the slider 1864 and the movement distance of the first optical reflector 130 can be approximately one-to-one. Therefore, when the slider 1864 moves approximately 0.01 mm, the first optical reflector 130 can move approximately 0.01 mm accordingly.

[0088] See Figure 11 , Figure 11 The transmission structure between the movable component 186 and the drive lever 188 is shown. The drive lever 188 is fixedly connected to the rotating shaft 140, and the movable component 186 is driveably connected to the drive lever 188.

[0089] When the moving part 186 moves along the axis of the lead screw 184, the moving part 186 transmits motion to the drive lever 188, causing the drive lever 188 to drive the rotating shaft 140 to rotate.

[0090] A drive-side elastic element 190 is provided between the movable element 186 and the drive lever 188. The drive-side elastic element 190 may be a metal spring. After the adjustment device 100 is assembled, the drive-side elastic element 190 is in an elastic deformation state and acts on the movable element 186 and the drive lever 188 respectively.

[0091] The drive-side elastic element 190 applies an elastic force to the drive lever 188, keeping the drive lever 188 in contact with the corresponding transmission part of the moving element 186. When the moving element 186 moves in one direction, it can transmit force to the drive lever 188; when the moving element 186 changes direction, the drive-side elastic element 190 compensates for the clearance between the moving element 186 and the drive lever 188 through elastic deformation, thereby reducing the idle travel generated during the reversing process.

[0092] Figure 11 In the specific structure shown, the moving component 186 may include a slider 1864, and a drive-side elastic component 190 is disposed between the slider 1864 and the drive lever 188. When the slider 1864 moves along the axial direction of the lead screw 184, it drives the drive lever 188 to move through the drive-side elastic component 190 and the corresponding transmission part.

[0093] After the drive lever 188 drives the rotating shaft 140 to rotate, the first lever 142 and the second lever 144 move synchronously with the rotating shaft 140 and transmit the motion to the bracket 120, causing the bracket 120 to translate relative to the base 110.

[0094] The first elastic element 160 and the drive-side elastic element 190 are respectively disposed at different positions in the motion transmission path. The first elastic element 160 is used to compensate for the fit clearance between the first lever 142 and the bracket 120, and the drive-side elastic element 190 is used to compensate for the fit clearance between the moving part 186 and the drive lever 188, thereby reducing the idle stroke caused by the mechanical fit clearance during motion transmission.

[0095] When the adjusting device 100 is working, the driving member 182 drives the lead screw 184 to rotate, and the lead screw 184 drives the moving member 186 to move along the axis of the lead screw 184. The moving member 186 transmits motion to the driving lever 188, and the driving lever 188 drives the rotating shaft 140 to rotate. The first lever 142 and the second lever 144 move synchronously with the rotating shaft 140 and transmit motion to the bracket 120 at two intervals, respectively.

[0096] After the bracket 120 is driven by the first lever 142 and the second lever 144, the first linear bearing 154 moves along the first guide shaft 1502, and the second linear bearing 156 moves along the second guide shaft 1522. The first guide member 150 and the second guide member 152 together define the direction of movement of the bracket 120, causing the bracket 120 to translate relative to the base 110. The first optical reflector 130 translates with the bracket 120, and the change in the position of the first optical reflector 130 changes the propagation path of the image light, thereby adjusting the virtual image distance.

[0097] The first lever 142 and the second lever 144 are driven by the same rotating shaft 140 and input movement at two intervals on the bracket 120, respectively. This reduces the asynchronous movement between different parts of the bracket 120 and the resulting torsion, allowing the first optical reflector 130 to maintain a relatively stable posture during translation. The first elastic element 160 and the driving-side elastic element 190 compensate for the mating clearance at the corresponding transmission positions, and multiple second elastic elements 172 continuously apply elastic force to the bracket 120, keeping the bracket 120 elastically constrained during movement.

[0098] After the drive unit 182 stops working, the self-locking structure formed by the lead screw 184, lead screw nut 1862, and slider 1864 restricts the movement of the moving part 186, keeping the drive lever 188, rotating shaft 140, first lever 142, and second lever 144 in their corresponding transmission states, thereby keeping the bracket 120 and the first optical reflector 130 in their adjusted positions. When the drive unit 182 changes its driving direction, the bracket 120 can translate in the opposite direction, allowing the first optical reflector 130 to reciprocate within a set stroke.

[0099] The technical features described in the various embodiments of this application can be combined with each other to form other embodiments without technical conflict. The specific shape, size, quantity, material, installation position, and connection method of each component can be adjusted according to the structure of the head-up display device, the arrangement of the optical system, and adjustment requirements. Technical solutions formed by equivalent substitution, positional adjustment, or combinational adjustment of related structures in the adjustment device 100 without departing from the technical concept of this application also fall within the scope of the technical solutions disclosed in this application. The scope of protection of this application is determined by the content of the claims.

Claims

1. An adjusting device, characterized in that, For adjusting the optical reflector of the head-up display device, the adjusting device comprising: Base; A bracket, slidably connected to the base, is used to mount the optical reflector; A rotating shaft, which is rotatably connected to the base; A first lever, fixedly connected to the rotating shaft, and pulsatorically connected to the bracket; and The second lever is fixedly connected to the rotating shaft and is also drively connected to the bracket. The second lever and the first lever are spaced apart along the axial direction of the rotating shaft.

2. The adjusting device according to claim 1, characterized in that, The rotating shaft has a shaft segment, and the cross-section of the shaft segment is non-circular; The first lever is provided with a first mating hole adapted to the shaft segment, and the second lever is provided with a second mating hole adapted to the shaft segment, with the shaft segment passing through the first mating hole and the second mating hole.

3. The adjusting device according to claim 1, characterized in that, The adjustment device further includes a first guide and a second guide, the first guide and the second guide being respectively connected to the base and slidably engaged with the bracket; The guiding directions of the first guide member and the second guide member are parallel to the sliding direction of the bracket relative to the base, and the first guide member and the second guide member are spaced apart along a direction intersecting the sliding direction.

4. The adjusting device according to claim 3, characterized in that, The first guide member is a first guide shaft, and the second guide member is a second guide shaft; The adjustment device further includes a first linear bearing and a second linear bearing connected to the bracket, with the first guide shaft passing through the first linear bearing and the second guide shaft passing through the second linear bearing.

5. The adjusting device according to claim 1, characterized in that, The adjusting device further includes a first elastic element, which is disposed between the first lever and the bracket and is in an elastic deformation state. The first elastic element abuts against the first lever and the bracket respectively.

6. The adjusting device according to claim 1, characterized in that, The adjustment device further includes an elastic component, which is disposed between the base and the support and is in an elastic deformation state.

7. The adjusting device according to claim 6, characterized in that, The elastic component includes a second elastic element; The adjusting device further includes a support shaft connected to the base, the axis of the support shaft being parallel to the sliding direction of the bracket relative to the base, and the second elastic element being sleeved on the support shaft.

8. The adjusting device according to claim 7, characterized in that, The bracket has a through hole, the support shaft passes through the through hole, and there is a gap between the inner wall of the through hole and the support shaft.

9. The adjusting device according to claim 7, characterized in that, The adjusting device further includes a limiting member connected to the bracket, the limiting member being used to press down on the second elastic member.

10. The adjusting device according to claim 1, characterized in that, The adjustment device further includes a drive assembly, which is connected to the base and driven by the rotating shaft.

11. The adjusting device according to claim 10, characterized in that, The drive assembly includes a drive component, a lead screw, and a moving component. The drive component is connected to the lead screw in a transmission manner, and the moving component is threadedly engaged with the lead screw.

12. The adjusting device according to claim 11, characterized in that, The drive assembly further includes a drive lever, which is fixedly connected to the rotating shaft, and the moving part is throttle-connected to the drive lever.

13. A head-up display device, characterized in that, include: case; The image generation unit is connected to the housing; Optical reflectors; and The adjusting device according to any one of claims 1 to 12; The base is connected to the housing, the optical reflector is connected to the bracket, and the optical reflector is located in the optical path of the image light emitted by the image generation unit.

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