Dimming device for vehicle and automobile

Abstract

The dimming device for the vehicle comprises a shell, a dimming support, a sliding support and a driving motor, one side of the dimming support is rotationally connected with the shell to form a first rotating shaft, and the other side of the dimming support is connected with a first ball screw at one end of the sliding support; a fixed rotating center and a second rotating shaft are formed in the middle of the sliding support through a limiting structure, the end, away from the dimming support, of the sliding support is connected with a second ball screw at the output end of the driving motor, and the first rotating shaft and the second rotating shaft are located on the two sides of the first ball screw correspondingly. The sliding support rotates around the second rotating shaft. Three-point dimming is arranged on the sliding support, the relative distance ratio of the three points is converted into the motion ratio of the driving motor to the dimming support with the middle of the sliding support as the center according to the similar motion principle, and therefore the purpose of enlarging the dimming angle is achieved, and large-angle dimming illumination of the illumination unit is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lamp design, and in particular to a vehicle dimming device and a vehicle. Background Art

[0002] To adjust the light output direction of headlights and illuminate different areas according to different needs, dimmable structures are generally designed into headlights. Existing lighting unit dimming is mainly achieved by directly acting on the lighting unit's fixed bracket through a motor assembly, causing the lighting unit to rotate around a side axis of the fixed bracket to achieve up and down pitch. Therefore, the motor's travel distance directly determines the dimming angle of the lighting unit. In the case of limited installation space for headlights, the motor's limited travel distance significantly restricts the dimming angle. With the development of headlight technology, more and more OEMs are defining ultra-near-field welcome scenarios to meet users' diverse interactive experiences. However, the existing dimming structure significantly limits the welcome imaging lighting, which is very unfavorable to the development of ultra-near-field welcome technology. Summary of the Invention

[0003] In order to solve the technical problem in the prior art that the dimming angle of a vehicle dimming device is directly determined by the travel distance of the motor, resulting in a limited dimming angle and an inability to achieve an ultra-near-field welcoming function, the present invention provides a vehicle dimming device and a vehicle to solve the above problem.

[0004] The present invention solves the problem and proposes a dimming device for a vehicle, including a shell, a dimming bracket, a sliding bracket and a driving motor. A module is installed on the dimming bracket, one side of the dimming bracket is rotatably connected to the shell to form a first rotating axis, and the other side of the dimming bracket is connected to a first ball screw at one end of the sliding bracket; the middle part of the sliding bracket is formed with a limiting structure to form a fixed rotation center and a second rotating axis, and the end of the sliding bracket away from the dimming bracket is connected to the second ball screw at the output end of the driving motor, the first rotating axis and the second rotating axis are respectively located on both sides of the first ball screw, and when the driving motor is started, the sliding bracket rotates around the second rotating axis, thereby driving the dimming bracket to rotate around the first rotating axis.

[0005] In an optional embodiment of the present invention, a motor bracket is further included, the middle portion of the sliding bracket and the motor bracket form a limiting structure, and the motor bracket is fixed on the housing.

[0006] In an optional embodiment of the present invention, the limiting structure includes a first fixed ball seat pressed into place with a third ball head screw on the motor bracket, a support shaft connecting the two ends of the first fixed ball seat, and a support groove located on the motor bracket for accommodating the support shaft, wherein the support shaft forms a second rotation axis.

[0007] In an optional embodiment of the present invention, the first ball head screw, the second ball head screw and the third ball head screw are located on the same straight line.

[0008] In an optional embodiment of the present invention, the first fixed ball seat includes an outer cover and a ball sleeve located inside the outer cover, the outer cover is circumferentially fixed to the ball sleeve, the outer cover is integrally formed on the sliding bracket, the ball sleeve has a spherical portion that cooperates with the third ball head screw and a clamping portion connected to the opening of the spherical portion, the outer cover has a first mounting port facing the third ball head screw, and the clamping portion opens outward and abuts against the inner surface of the first mounting port.

[0009] In an optional embodiment of the present invention, the sliding bracket is provided with a second fixed ball seat which is pressed into the second ball head screw, and the second fixed ball seat has a mounting groove which passes through both ends of the second fixed ball seat and has an arc-shaped cross-section, and abutment portions which abut against the root of the second ball head screw are provided on both sides of the arc of the mounting groove, and the force exerted by the abutment portions on the second ball head screw is directed to the center of the second ball head screw.

[0010] In an optional embodiment of the present invention, the sliding bracket has a second mounting port for mounting a second fixed ball seat, the second fixed ball seat has an inner limit plate and an outer limit plate located on the inner and outer surfaces of the second mounting port, the outer surface of the second mounting port is sequentially connected with a locking surface, a transition surface, an unlocking surface and a limit surface along the circumferential direction, the transition surface is provided with a protruding locking surface, the limit surface is provided with a protruding unlocking surface, the surface height of the transition surface gradually decreases from one end of the locking surface to the other end of the unlocking surface, and the protruding height of the transition surface is less than the protruding height of the limiting surface, and the locking surface further has a protruding stop surface at the end away from the transition surface.

[0011] When the outer limiting plate is located at the locking surface, the inner limiting plate and the outer limiting plate are clamped on both sides of the second installation opening; when the outer limiting plate is located at the unlocking surface, the second fixed ball seat can pass through the second installation opening.

[0012] In an optional embodiment of the present invention, the outer surface of the second mounting opening has a centrosymmetrical structure, and the angle between the center of the locking surface, the center of the unlocking surface and the center of the second mounting opening is 90°.

[0013] In an optional embodiment of the present invention, the shell is provided with a mounting hole for installing a manual dimming structure, and the manual dimming structure is connected to the drive motor; the manual dimming structure includes a mounting column passing through the mounting hole, and a claw located at one end of the mounting column and extending toward the mounting hole, the claw having an internal pressure surface abutting the inner circumferential surface of the mounting hole and an internal pressure end surface abutting the surface of the mounting hole facing the drive motor, one end of the mounting column where the claw is located is provided with a gear meshing with the drive motor, and the other end of the mounting column has an external pressure end surface abutting the outer end surface of the mounting hole.

[0014] In an optional embodiment of the present invention, a sliding plate is further provided on the sliding bracket, and a sliding groove is provided on the housing for sliding engagement with the sliding plate, and a side surface of the sliding groove restricts the sliding plate from moving in a direction parallel to the second rotation axis.

[0015] In an optional embodiment of the present invention, two dimming structures are provided on the housing, and a fixed rotation center and a first ball screw are provided on both sides of the driving motor on the sliding bracket.

[0016] The present invention also provides a car, comprising the above-mentioned vehicle dimming device.

[0017] The beneficial effects of the present invention are: (1) The vehicle dimming device and the vehicle described in the present invention are provided with three-point dimming on the sliding bracket, and with the middle of the sliding bracket as the center, the principle of similar motion is used to convert the relative distance ratio of the three points into the motion ratio of the driving motor and the dimming bracket, thereby achieving the purpose of expanding the dimming angle and realizing large-angle dimming lighting of the lighting unit.

[0018] (2) The present invention utilizes the linear drive of the driving motor itself and the restriction of the slide groove on the shell to convert the three-point axial motion of the sliding bracket into linear motion at both ends, effectively limiting the degree of freedom of the dimming bracket and achieving the purpose of stable dimming.

[0019] (3) The first fixed ball seat located in the middle of the sliding bracket in the present invention adopts a split structure composed of a ball sleeve and an outer cover. The ball cover is used to completely cover the third ball head screw to ensure the rotation effect. The outer cover is used to cover the ball sleeve, and the ball sleeve can be easily replaced, thereby reducing maintenance costs.

[0020] (4) The present invention sets the fixed ball seats at the dimming points at both ends of the sliding bracket as through-type installation grooves. On the one hand, it is convenient for the installation of the ball head screws. On the other hand, it provides a certain displacement space for the two ball head screws to avoid jamming.

[0021] (5) The present invention utilizes a manual dimming structure to directly connect the driving motor to the housing, thereby simplifying the manual dimming device, shortening the dimming path, and effectively reducing the dimming error. By directly rotating the gear, the driving motor can be manually calibrated, thereby enhancing the effective driving performance and stability of the lighting unit dimming. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and examples.

[0023] Figure 1 is a perspective view of a specific embodiment of the vehicle dimming device according to the present invention; Figure 2 is a front view of a specific embodiment of the vehicle dimming device according to the present invention; Figure 3 yes Figure 2 AA-direction cross-sectional diagram; Figure 4 yes Figure 2 Enlarged view of point a in the middle; Figure 5 yes Figure 3 Enlarged view of point b in the middle; Figure 6 yes Figure 2 BB-direction cross-sectional diagram; Figure 7 yes Figure 6 Enlarged image of point c in the middle; Figure 8 Schematic diagram of the motion relationship at three dimming points in the present invention; Figure 9 is a three-dimensional diagram of the housing in the present invention; Figure 10 This is an enlarged view of the second mounting port in the present invention; Figure 11 It is a three-dimensional diagram of the motor bracket in the present invention; Figure 12 Schematic diagram of the vehicle dimming device according to the fifth embodiment of the present invention.

[0024] In the figure, 1, housing, 101, slide groove, 102, mounting hole, 2, dimming bracket, 3, sliding bracket, 31, first ball screw, 32, first fixed ball seat, 3201, outer cover, 3202, ball sleeve, 32021, spherical part, 32022, clamping part, 33, first mounting port, 34, sliding plate, 35, support shaft, 4, motor bracket, 41, third ball screw, 42, support groove, 5, manual dimming structure, 501, mounting column , 502, claw, 503, gear, 6, drive motor, 61, second ball head screw, 7, second fixed ball seat, 701, mounting groove, 702, abutment portion, 703, inner limit plate, 704, outer limit plate, 8, external pressure end face, 9, second mounting port, 901, locking surface, 902, transition surface, 903, unlocking surface, 904, limit surface, 905, raised stop surface, 10, first rotating axis, 11, internal pressure surface, 12, internal pressure end face. DETAILED DESCRIPTION

[0025] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0026] Example 1 like Figure 1-Figure 3 As shown, a dimming device for a vehicle includes a shell 1, a dimming bracket 2, a sliding bracket 3 and a driving motor 6. A module is installed on the dimming bracket 2. One side of the dimming bracket 2 is rotatably connected to the shell 1 to form a first rotating axis 10, and the other side of the dimming bracket 2 is connected to a first ball screw 31 at one end of the sliding bracket 3; the middle part of the sliding bracket 3 is formed with a limiting structure to form a fixed rotation center and a second rotating axis, and the end of the sliding bracket 3 away from the dimming bracket 2 is connected to the second ball screw 61 at the output end of the driving motor 6. The first rotating axis 10 and the second rotating axis are respectively located on both sides of the first ball screw 31. When the driving motor 6 is started, the sliding bracket 3 rotates around the second rotating axis, thereby driving the dimming bracket 2 to rotate around the first rotating axis 10.

[0027] The dimming bracket 2 and the shell 1 are matched through two sets of ball screws and ball seats. The first rotating axis 10 is the connecting line of the two ball screws. The sliding bracket 3 serves as a dimming point at the connection with the second ball screw 61, the connection with the dimming bracket 2 and the fixed rotation center. Large-angle dimming is achieved through the coordination of the movement of the three dimming points.

[0028] The ball screw is typically pressed into place with the fixed ball seat to achieve a screw connection between the two components. The drive motor 6 receives a signal from the controller, causing the second ball screw 61 at the output end of the drive motor 6 to reciprocate. This causes the end of the sliding bracket 3 connected to the second ball screw to move accordingly. Within the constraints of the fixed rotation center, the sliding bracket 3 rotates about the second rotation axis, thereby driving the dimming bracket 2 connected to the first ball screw 31. The dimming bracket 2 has a fixed first rotation axis 10, so the end of the dimming bracket 2 connected to the first ball screw 31 rotates about the first rotation axis 10.

[0029] According to the principle of similar motion, Figure 8 As shown, the ratio of the reciprocating motion distance M1 of the driving motor 6 to the front-to-back motion distance M2 of the dimming bracket 2 is the same as the ratio of the distance L1 from the second ball screw 61 to the fixed rotation center to the distance L2 from the first ball screw 31 to the fixed rotation center, and the closer the fixed rotation center is to the second ball screw 61, the greater the difference in the reciprocating motion of the dimming bracket 2 compared to the driving motor 6, which also makes the dimming angle of the lighting unit fixed on the dimming bracket 2 larger.

[0030] Taking the headlights of a car as an example, the dimming angle of a conventional lighting unit is small, and the illuminated area is far away from the car body. By using the dimming device of the present invention, the dimming angle can be increased, and the illuminated area can be closer to the car body, realizing ultra-near-field welcoming imaging.

[0031] In an optional embodiment of the present invention, a motor bracket 4 is further included. The middle portion of the sliding bracket 3 and the motor bracket 4 form a limiting structure, and the motor bracket 4 is fixed to the housing 1. Due to the high precision requirements of the limiting structure, it is provided on the sliding bracket 3 and the motor bracket 4. This can reduce the processing requirements of the housing 1. Since the housing 1 needs to be processed to mate with the vehicle body, the sliding bracket 3 and the motor bracket 4 disperse the mating parts, avoiding the excessive number of mating parts on a single component, which would increase the processing difficulty and also facilitate replacement and maintenance.

[0032] like Figure 2 and Figure 11 As shown, the limiting structure may include, but is not limited to, a first fixed ball seat 32 that is pressed into engagement with a third ball screw 41 on the motor bracket 4, a support shaft 35 connecting the two ends of the first fixed ball seat 32, and a support groove 42 located on the motor bracket 4 and used to accommodate the support shaft 35, wherein the support shaft 35 forms a second rotation axis. The screw connection between the third ball screw 41 and the first fixed ball seat 32 forms a fixed rotation center. When the driving motor 6 pushes the sliding bracket 3, the first fixed ball seat 32 will not move in the same direction under the restriction of the third ball screw 41, but will rotate around the third ball screw 41 while rotating around the support shaft 35 under the action of the support groove 42. In a preferred embodiment, the first ball screw 31, the second ball screw 61, and the third ball screw 41 are located on the same straight line. At this time, the size of the sliding bracket 3 is minimal, being only a narrow short board.

[0033] The first fixed ball seat 32 can have the same structure as commercially available ball seats and can be mounted on the sliding bracket 3 or integrally injection-molded with the sliding bracket 3. Because the mating portion between the first fixed ball seat 32 and the third ball screw 41 is subject to significant friction and is susceptible to wear, in this embodiment, the first fixed ball seat 32 is configured as a detachable structure. Specifically, the first fixed ball seat 32 comprises an outer cover 3201 and a ball sleeve 3202 positioned within the outer cover 3201. The outer cover 3201 and the ball sleeve 3202 are circumferentially fixed and integrally molded with the sliding bracket 3. The ball sleeve 3202 comprises a spherical portion 32021 that mates with the third ball screw 41 and a clamping portion 32022 connected to the opening of the spherical portion 32021. The outer cover 3201 has a first mounting opening 33 facing the third ball screw 41. The clamping portion 32022 flares outward and abuts the inner surface of the first mounting opening 33.

[0034] like Figure 5 As shown, the spherical portion 32021 of the ball sleeve 3202 is screwed with the third ball screw 41 to complete the spherical covering. The outer cover 3201 is a cover body raised on the surface of the sliding bracket 3. Figure 5The outer cover 3201 is shown as a separate structure due to incomplete cross-sectioning. In reality, the outer cover 3201 and the sliding bracket 3 are integrally formed. The inner bottom surface and first mounting opening 33 of the outer cover 3201 respectively abut against the ends of the ball sleeve 3202, confining the ball sleeve 3202 within the outer cover 3201. When the ball sleeve 3202 becomes worn, it can be removed with tools, reducing repair costs. Furthermore, this embodiment integrates the outer cover 3201 with the sliding bracket 3, further conserving installation space. To circumferentially secure the ball sleeve 3202 to the outer cover 3201, multiple ribs can be provided on the inner surface of the outer cover 3201, and multiple radially extending retaining grooves can be provided on the outer circumference of the ball sleeve 3202. The ribs are inserted into the retaining grooves. The radial direction refers to the direction extending from the spherical portion 32021 toward the engaging portion 32022.

[0035] Regarding the connection structure at the first ball screw 31 and the second ball screw 61, since the sliding bracket 3 will produce movement deviating from the linear motion direction of the drive motor 6 at these two dimming points when rotating, if the same spherical covering structure as the third ball screw 41 is used, the rotation angle of the sliding bracket 3 will be limited. Therefore, in this embodiment, the second fixed ball seat 7 on the sliding bracket 3, which is pressed into engagement with the second ball screw 61, adopts the following structure: like Figure 5 and Figure 6 As shown, the second fixed ball seat 7 has a mounting groove 701 that passes through both ends of the second fixed ball seat 7 and has an arc-shaped cross-section. Abutment portions 702 that abut against the root of the second ball head screw 61 are provided on both sides of the arc of the mounting groove 701, and the force exerted by the abutment portion 702 on the second ball head screw 61 is directed toward the center of the second ball head screw 61.

[0036] In terms of installation, the installation slot 701 is a through-type structure at both ends, and the drive motor 6 and the second ball screw 61 connected to the drive motor 6 can be installed into the installation slot 701 along the through direction. Figure 6 As shown, there is a plane perpendicular to the axial direction at the root of the second ball head screw 61, and the abutment portion 702 abuts against this plane. Compared with the first fixed ball seat 32 which only relies on the spherical surface covering, the abutment portion 702 here can better clamp the second ball head screw 61, thereby compensating for the lack of grip in the through direction of the installation groove 701.

[0037] In terms of movement, the through direction of the mounting groove 701 is the same as the direction of the connecting line between the third ball screw 41 and the second ball screw 61. When the sliding bracket 3 rotates, the second ball screw 61 has a bias towards or away from the third ball screw 41 relative to the movement direction of the drive motor 6. The setting of the mounting groove 701 allows the second ball screw 61 to have translation space in this direction within the mounting groove 701, thereby avoiding the limitation of the extension length of the drive motor 6.

[0038] Similarly, a ball seat is provided on the dimming bracket 2, which is pressed into the first ball head screw 31. The structure of the ball seat is the same as that of the second fixed ball seat 7, so that the first ball screw has movement space relative to the ball seat along the connection line between the first ball screw and the third ball head screw 41, thereby avoiding restricted movement of the dimming bracket 2.

[0039] Example 2 Based on the first embodiment, the second fixed ball seat 7 is designed in this embodiment to be lockable or unlockable with the sliding bracket 3. The specific structure is as follows: like Figure 4 、 Figure 5 and Figure 10 As shown, the sliding bracket 3 has a second mounting opening 9 for mounting the second fixed ball seat 7. The second fixed ball seat 7 has an inner limit plate 703 and an outer limit plate 704 located on the inner and outer surfaces of the second mounting opening 9. The outer surface of the second mounting opening 9 is circumferentially connected with a locking surface 901, a transition surface 902, an unlocking surface 903, and a limit surface 904. The transition surface 902 protrudes from the locking surface 901, forming a step at the connection between the two. The limit surface 904 protrudes from the unlocking surface 903. The surface height of the transition surface 902 gradually decreases from the locking surface 901 end to the unlocking surface 903 end. The protrusion height of the transition surface 902 is less than that of the limit surface 904, that is, the step formed by the transition surface 902 is smaller. The end of the locking surface 901 away from the transition surface 902 also has a raised stop surface 905. The second fixed ball seat 7 is locked or unlocked with the sliding bracket 3 by rotation.

[0040] When the outer limit plate 704 is located at the locking surface 901, the inner limit plate 703 and the outer limit plate 704 are stuck on both sides of the second mounting port 9. At this time, the second fixed ball seat 7 and the sliding bracket 3 are in a locked state, and the second fixed ball seat 7 cannot be pulled out from the second mounting port 9, and the through direction of the mounting groove 701 is in a working state, that is, the same as the offset direction of the second ball head screw 61. When the outer limit plate 704 is located at the unlocking surface 903, the second fixed ball seat 7 can pass through the second mounting port 9. At this time, the second fixed ball seat 7 and the sliding bracket 3 are in an unlocked state.

[0041] In the locked state, the raised stop surfaces 905 and the raised transition surface 902 at both ends of the locking surface 901 can limit the outer limit plate 704, and the second fixed ball seat 7 cannot rotate without external force. Similarly, the raised limit surfaces 904 and the raised transition surface 902 at both ends of the unlocking surface 903 have a rotation-stopping effect on the outer limit plate 704 in the unlocked state. Since the raised height of the transition surface 902 is small, and the raised heights of the raised stop surface 905 and the limit surface 904 are large, a smaller rotational force can be used to cross the transition surface 902, and the inclined transition surface 902 can provide guidance for the rotation of the outer limit plate 704.

[0042] In a preferred embodiment, the outer surface of the second mounting opening 9 is a centrosymmetrical structure, and the angle between the center of the locking surface 901 and the center of the unlocking surface 903 and the center of the second mounting opening 9 is 90°. Figure 10 As shown, the second mounting opening 9 is in the direction of the locking state of the outer limiting plate 704 (that is, Figure 10 The width of the upper and lower directions is small, and the outer limit plate 704 is unlocked in the direction (that is, Figure 10 The width of the display is larger in the left and right directions.

[0043] Example 3 On the basis of the above embodiment, the driving motor 6 in this embodiment adopts a manual and electric combination model, wherein the manual part controls the linear motion of the driving motor 6 by means of the meshing of the gear 503. The driving motor 6 of this model can be purchased commercially. In this embodiment, a mounting hole 102 for mounting the manual dimming structure 5 is provided on the housing 1. Figure 6 、 Figure 7 and Figure 9 As shown, the manual dimming structure 5 is connected to the drive motor 6; the manual dimming structure 5 includes a mounting post 501 that passes through the mounting hole 102, a claw 502 located at one end of the mounting post 501 and extending toward the mounting hole 102, the claw 502 having an internal pressure surface 11 that abuts the inner circumferential surface of the mounting hole 102 and an internal pressure end surface 12 that abuts the surface of the mounting hole 102 facing the drive motor 6. One end of the mounting post 501 where the claw 502 is located is provided with a gear 503 that meshes with the drive motor 6, and the gear 503 meshes with the drive motor 6. The other end of the mounting post 501 has an external pressure end surface 8 that abuts the outer end surface of the mounting hole 102. The internal pressure end surface 12 and the external pressure end surface 8 fix the mounting post 501 relative to the housing 1 along the central axis of the mounting hole 102, and the internal pressure surface 11 clamps the claw 502 radially to the mounting hole 102. One end of the claw 502 abutting against the mounting hole 102 is in a suspended state and has a certain elasticity, so that it is easy to be installed into the mounting hole 102 .

[0044] Example 4 In the above embodiment, when the sliding bracket 3 rotates around the third ball screw 41, the sliding bracket 3 will have a certain lateral shaking due to the gap between the support shaft 35 and the support groove 42. Figure 2 and Figure 9 As shown, in this embodiment, a sliding plate 34 is provided on the sliding bracket 3, and a sliding groove 101 that slides with the sliding plate 34 is provided on the shell 1. The side of the sliding groove 101 limits the movement of the sliding plate 34 in a direction parallel to the second rotation axis, thereby preventing the sliding bracket 3 from shaking sideways.

[0045] Example 5 The difference between this embodiment and the above embodiment is that two dimming structures are provided on the housing 1 , and a fixed rotation center and a first ball screw 31 are provided on both sides of the driving motor 6 on the sliding bracket 3 .

[0046] like Figure 12 As shown, the sliding bracket 3 is a double-linked dimming structure, in which two dimming brackets 2 are connected through the sliding bracket 3, and driven by a driving motor 6, the two dimming brackets 2 are driven to form a large-angle dimming of the dual lighting units, and the distances between the fixed ball seats on the sliding bracket 3 close to the driving motor 6 on both sides may be different, so that the dimming brackets 2 connected on both sides can form different movement ratios, and finally the lighting unit fixed to the dimming bracket 2 can also form different lighting angles according to the needs of the lamp to meet various dimming requirements.

[0047] Example 6 The present invention also provides a car, comprising the above-mentioned vehicle dimming device.

[0048] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0049] In this specification, the schematic representations of the terms do not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments.

[0050] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A vehicle dimming device, characterized in that: It includes a housing, a dimming bracket, a sliding bracket and a drive motor. The dimming bracket is mounted with a module. One side of the dimming bracket is rotatably connected to the housing to form a first rotating axis. The other side of the dimming bracket is connected to a first ball screw at one end of the sliding bracket. The middle part of the sliding bracket forms a fixed rotation center and a second rotation axis through a limiting structure, and the end of the sliding bracket away from the dimming bracket is connected to the second ball head screw at the output end of the driving motor, and the first rotation axis and the second rotation axis are respectively located on both sides of the first ball head screw. When the driving motor is started, the sliding bracket rotates around the second rotation axis, thereby driving the dimming bracket to rotate around the first rotation axis.

2. The vehicle dimming device according to claim 1, wherein: It also includes a motor bracket, the middle part of the sliding bracket and the motor bracket form a limiting structure, and the motor bracket is fixed on the housing; The limiting structure includes a first fixed ball seat pressed with a third ball screw on the motor bracket, a support shaft connecting the two ends of the first fixed ball seat, and a support groove located on the motor bracket and used to accommodate the support shaft, wherein the support shaft forms a second rotating axis.

3. The vehicle dimming device according to claim 2, wherein: The first fixed ball seat includes an outer cover and a ball sleeve located inside the outer cover. The outer cover is circumferentially fixed to the ball sleeve. The outer cover is integrally formed on the sliding bracket. The ball sleeve has a spherical portion that cooperates with the third ball head screw and a clamping portion connected to the opening of the spherical portion. The outer cover has a first mounting port facing the third ball head screw. The clamping portion opens outward and abuts against the inner surface of the first mounting port.

4. The vehicle dimming device according to claim 1, wherein: The sliding bracket is provided with a second fixed ball seat which is pressed into engagement with the second ball screw. The second fixed ball seat has a mounting groove which passes through both ends of the second fixed ball seat and has an arc-shaped cross-section. Abutment portions which abut against the root of the second ball screw are provided on both sides of the arc of the mounting groove, and the force exerted by the abutment portions on the second ball screw is directed toward the center of the second ball screw.

5. The vehicle dimming device according to claim 4, wherein: The sliding bracket has a second mounting hole for mounting a second fixed ball seat, the second fixed ball seat has an inner limit plate and an outer limit plate located on the inner and outer surfaces of the second mounting hole, the outer surface of the second mounting hole is sequentially connected with a locking surface, a transition surface, an unlocking surface and a limit surface along the circumferential direction, the transition surface is protruding from the locking surface, the limit surface is protruding from the unlocking surface, the surface height of the transition surface gradually decreases from one end of the locking surface to one end of the unlocking surface, and the protruding height of the transition surface is less than the protruding height of the limit surface, and the end of the locking surface away from the transition surface further has a protruding stop surface; When the outer limiting plate is located at the locking surface, the inner limiting plate and the outer limiting plate are clamped on both sides of the second installation opening; when the outer limiting plate is located at the unlocking surface, the second fixed ball seat can pass through the second installation opening.

6. The vehicle dimming device according to claim 5, wherein: The outer surface of the second mounting opening has a centrosymmetrical structure, and the angle between the center of the locking surface, the center of the unlocking surface and the center of the second mounting opening is 90°.

7. The vehicle dimming device according to claim 1, wherein: The shell is provided with a mounting hole for installing a manual dimming structure, and the manual dimming structure is connected to the drive motor; the manual dimming structure includes a mounting post passing through the mounting hole, a claw located at one end of the mounting post and extending in the direction of the mounting hole, the claw having an internal pressure surface abutting the inner circumferential surface of the mounting hole and an internal pressure end surface abutting the surface of the mounting hole facing the drive motor, one end of the mounting post where the claw is located is provided with a gear meshing with the drive motor, and the other end of the mounting post has an external pressure end surface abutting the outer end surface of the mounting hole.

8. The vehicle dimming device according to claim 1, wherein: The sliding bracket is further provided with a sliding plate, and the housing is provided with a sliding groove that slidably cooperates with the sliding plate. The side surface of the sliding groove restricts the sliding plate from moving in a direction parallel to the second rotation axis.

9. The vehicle dimming device according to claim 1, wherein: Two dimming structures are provided on the housing, and a fixed rotation center and a first ball screw are provided on both sides of the driving motor on the sliding bracket.

10. An automobile, characterized in that: The vehicle dimming device comprises the vehicle dimming device according to any one of claims 1 to 9.

Images