Damping device for driving module of head-up display

Abstract

A vibration damping device for a head-up display driving module is provided. The damping device includes: a housing; a motor disposed on an end portion of the housing via a motor mount; a lead screw configured to abut against a central region of the housing, the lead screw extending from and coupled to a rotation shaft of the motor; a screw holder configured to fix the screw; a linkage configured to raise or lower the lead screw based on a driving force of the motor; a flexible coupling configured to connect a rotating shaft of the motor and the lead screw; a heterogeneous spring member coupled to the flexible coupling to isolate torsional vibrations of the flexible coupling; and the cantilever type dynamic damper is arranged between the motor installation part and the lead screw support, and the cantilever type dynamic damper is configured to absorb vibration of the motor and attenuate vibration generated by the motor. The vibration damping device can block vibration from being transmitted to a lead screw support by using a cantilever type dynamic vibration absorber.

Description

Technical Field

[0001] This disclosure relates to a vibration damping device for a head-up display driver module. Background Technology

[0002] The following description provides background information in connection with this disclosure and does not constitute prior art.

[0003] A head-up display (HUD) is a device that displays images such as vehicle speed, remaining fuel, and navigation information on the windshield that forms the front window of a vehicle. HUDs are typically configured to project information from an image generation unit onto the windshield.

[0004] Head-up displays (HUDs) utilize motors to rotate aspherical mirrors. As the motor's revolutions per minute (RPM) increases, its vibration (i.e., its acceleration) also increases. Conventional HUDs disclose techniques for suppressing motor vibration by using dynamic dampers made of metals such as brass. However, metal dynamic dampers, such as brass, are heavier than components such as the motor and the motor mounts used to fix it. This increases the manufacturing cost and overall weight of the HUD drive module. Utility Model Content

[0005] This synopsis is provided to introduce, in a simplified form, some concepts that will be further described in the detailed description below. This synopsis is not intended to identify key or essential features of the claimed subject matter, nor is it intended to help determine the scope of the claimed subject matter.

[0006] Embodiments of this disclosure provide a vibration damping device for a head-up display drive module, which can block vibration transmission to the lead screw support by using a cantilevered dynamic vibration absorber.

[0007] Embodiments of this disclosure provide a vibration damping device for a head-up display drive module, which can handle low-frequency vibrations by using a cantilevered dynamic vibration damper.

[0008] Embodiments of this disclosure provide a vibration damping device for a head-up display drive module, which can isolate torsional vibrations transmitted through a flexible connector by using a heterogeneous spring member.

[0009] In general, a vibration damping device for a head-up display drive module includes: a housing; a motor mounted on an end portion of the housing via a motor mounting member; a lead screw configured to abut against a central region of the housing, the lead screw extending from and connected to the rotational shaft of the motor; a lead screw bracket configured to fix the lead screw; a linkage configured to raise or lower the lead screw based on the driving force of the motor; a flexible coupling configured to connect the rotational shaft of the motor and the lead screw; a heterogeneous spring member coupled to the flexible coupling to isolate torsional vibrations of the flexible coupling; and a cantilevered dynamic damper disposed between the motor mounting member and the lead screw bracket, the cantilevered dynamic damper configured to absorb vibrations of the motor and attenuate vibrations generated by the motor.

[0010] The heterogeneous spring member may include: a first spring member that is elastic based on clockwise torsion relative to the axis of rotation of the flexible connector; and a second spring member that is elastic based on counterclockwise torsion relative to the axis of rotation of the flexible connector, wherein the second spring member may be arranged outside the first spring member to cover the first spring member.

[0011] The flexible coupling may include two hubs connected to opposite sides of the spacer, wherein each of the two hubs includes two retaining holes formed toward the center, the two retaining holes being configured to be opposite each other on the outer diameter of the hub.

[0012] The heterogeneous spring components can be assembled and attached to two fixing holes in each of the two different hubs via two arms formed on the inner side.

[0013] Heterogeneous spring components can be individually assembled and attached to fixing holes formed in each of the different hubs to maintain the corresponding preload applied in the clockwise and counterclockwise directions.

[0014] The cantilever dynamic damper may include: an external threaded portion configured to penetrate opposite ends of a lead screw support and attached to the lead screw support by bolts; a cantilevered external threaded portion configured to penetrate opposite ends of a motor mounting component and attached to the motor mounting component by bolts; a damping member disposed between the external threaded portion and the cantilevered external threaded portion to attenuate vibrations transmitted between the external threaded portion and the cantilevered external threaded portion; and an elastic member configured to overlap with the damping member and be compressed to have a predetermined tension.

[0015] Cantilever dynamic dampers can be configured to physically separate the lead screw support from the motor mount.

[0016] The cantilevered external thread section is configured to be adjusted to a preset mass and preset length so that the natural frequency of the motor is equal to the target frequency of the cantilevered dynamic damper.

[0017] The cantilever dynamic damper is arranged so that the rotation axis of the motor coincides with the rotation axis of the lead screw.

[0018] The cantilever dynamic damper can also be configured to: adjust the length of the damping member based on the natural frequency of the motor; and adjust the tension of the elastic member.

[0019] In another general aspect of this disclosure, a vibration damping device for a head-up display drive module includes: a housing; a motor disposed at an end of the housing; a lead screw connected to and extending from the motor at a rotating shaft; a lead screw bracket configured to position the lead screw; a linkage connected to the lead screw and including an aspherical mirror; a controller configured to control the motor to rotate the aspherical mirror by raising or lowering the linkage; a flexible coupling connected to the lead screw at a rotating shaft of the motor; one or more heterogeneous spring members connected to the flexible coupling and configured to isolate torsional vibrations of the flexible coupling; and a cantilevered dynamic damper disposed between the motor mount and the lead screw bracket, the cantilevered dynamic damper being configured to absorb and attenuate vibrations generated by the motor.

[0020] One or more heterogeneous spring members may include: a first spring member that is elastic based on clockwise torsion relative to the axis of rotation of the flexible connector; and a second spring member that is elastic based on counterclockwise torsion relative to the axis of rotation of the flexible connector, wherein the second spring member may be disposed outside the first spring member to cover the first spring member.

[0021] The flexible coupling may include at least two hubs connected to opposite sides of the spacer, wherein each of the at least two hubs includes two retaining holes formed toward the center, the two retaining holes being configured to be opposite each other on the outer diameter of the hub.

[0022] The cantilever dynamic damper may include: an external threaded portion configured to penetrate opposite ends of a lead screw support and attached to the lead screw support by bolts; a cantilevered external threaded portion configured to penetrate opposite ends of a motor mounting component and attached to the motor mounting component by bolts; a damping member disposed between the external threaded portion and the cantilevered external threaded portion to attenuate vibrations transmitted between the external threaded portion and the cantilevered external threaded portion; and an elastic member configured to overlap with the damping member and be compressed to have a predetermined tension.

[0023] The problems to be solved by this disclosure are not limited to those described above, and those skilled in the art can clearly understand from the following description other problems not mentioned herein.

[0024] According to embodiments of this disclosure, the vibration damping device for the head-up display drive module can block the transmission of vibration to the lead screw support by using a cantilevered dynamic vibration damper.

[0025] According to embodiments of this disclosure, the vibration damping device for a head-up display drive module can handle low-frequency vibrations by using a cantilevered dynamic vibration damper.

[0026] According to embodiments of this disclosure, a vibration damping device for a head-up display drive module can isolate torsional vibrations transmitted through a flexible connector by using a heterogeneous spring member. Attached Figure Description

[0027] Figure 1 This is a view showing the configuration of a vibration damping device for a head-up display drive module according to an embodiment of the present disclosure.

[0028] Figure 2 This is an exploded perspective view showing the configuration of a vibration damping device for a head-up display drive module according to an embodiment of the present disclosure.

[0029] Figure 3 It is along Figure 1 The cross-sectional view taken from line AA in the diagram.

[0030] Figure 4 This is an exploded perspective view showing a flexible connector and a heterogeneous spring member according to embodiments of the present disclosure. Detailed Implementation

[0031] In the following description, some exemplary embodiments of this disclosure will be described in detail with reference to the accompanying drawings. In the following description, the same reference numerals preferably denote the same elements, even though the elements are shown in different drawings. Furthermore, in the following description of some embodiments, for the purpose of clarity and brevity, detailed descriptions of known functions and configurations incorporated herein will be omitted.

[0032] Furthermore, terms such as first, second, A, B, (a), (b), etc., are used only to distinguish one component from another and do not imply or indicate the nature, order, or sequence of the components. Throughout this specification, when a part "comprises" or "includes" a component, that part is intended to further include other components without excluding them, unless specifically stated to the contrary. Terms such as "unit," "module," etc., refer to one or more units for performing at least one function or operation, which can be implemented by hardware, software, or a combination thereof.

[0033] Figure 1 This is a view showing the configuration of a vibration damping device for a head-up display drive module according to an embodiment of the present disclosure.

[0034] Figure 2 This is an exploded perspective view showing the configuration of a vibration damping device for a head-up display drive module according to an embodiment of the present disclosure.

[0035] refer to Figure 1 and Figure 2 The head-up display driving module 100 according to the embodiments of the present disclosure includes some or all of the following: a power generation unit 110, a cantilever dynamic damper 120, a heterogeneous spring member 130, a power transmission unit 140, a linkage member 150, and a housing 160.

[0036] The head-up display drive module 100 rotates the aspherical mirror 180 by raising and lowering the linkage 150 based on the torque of the motor 111. That is, the controller (not shown) can control the motor 111 to rotate the aspherical mirror 180 by raising or lowering the linkage 150;

[0037] The power generation unit 110 includes a motor 111 and a motor mounting component 112.

[0038] The motor 111 is arranged on one side of the housing 160. The motor 111 may be formed at the center relative to the width of the housing 160.

[0039] The lead screw 141 extends from the rotating shaft of the motor 111 and is attached to the rotating shaft of the motor via a flexible coupling. The lead screw 141 is configured to rotate by being connected to the rotating shaft of the motor 111 in its extending direction, and the lead screw may be integrally formed with the generator unit 110 or formed as a detachable structure that can be assembled / disassembled.

[0040] The flexible connector can partially attenuate the vibrations generated by the motor 111.

[0041] The flexible connector can compensate for the eccentricity between the rotating shaft of motor 111 and the rotating shaft of lead screw 141.

[0042] The flexible connector has hubs 131_a connected to opposite sides of the spacer 131_b. Therefore, the rotating shaft of the motor 111 can be fitted and attached to the hub 131_a connected to one side of the flexible connector, and the lead screw 141 can be fitted and attached to the hub 131_a connected to the other side of the flexible connector. Here, even if the rotating shafts of the motor 111 and the lead screw 141 do not coincide, the eccentricity between the shafts can be compensated by using the spacer 131_b.

[0043] For example, the flexible coupling according to embodiments of this disclosure can be an Oldham coupling. Here, the Oldham coupling is used as a coupling to compensate for the eccentricity between shafts connected to both sides. However, the type of flexible coupling is not limited to this.

[0044] The motor mounting bracket 112 allows the motor 111 to be secured within the housing 160. The motor mounting bracket 112 has a rotational axis relative to the motor 111. Figure 1The shape is partially protruding in the y- and -y directions. However, this is only an example, and the shape of the motor mount 112 is not limited to this example. The motor mount 112 can be formed in such a way that multiple portions protrude radially from the rotation axis of the motor 111.

[0045] The motor mounting bracket 112 includes a plurality of holes to which a portion of the cantilever dynamic damper 120, which will be described later, is fitted and attached.

[0046] The cantilever dynamic damper 120 simultaneously penetrates and is attached to the motor mounting 112 and the lead screw bracket 143.

[0047] Vibrations generated from the motor 111 are transmitted sequentially to the housing 160 via the motor mount 112 and the lead screw 141. Therefore, the head-up display drive module 100 according to an embodiment of the present disclosure can attenuate the vibrations transmitted between the motor mount 112 and the lead screw bracket 143 by using a cantilevered dynamic damper 120.

[0048] The cantilever dynamic damper 120 includes an external threaded portion 121, a cantilever external threaded portion 122, a damping member 124, and an elastic member 123.

[0049] The external threaded portion 121 is assembled and attached to a through hole (not shown) formed in the lead screw bracket 143. The external threaded portion 121 is fixed to the lead screw bracket 143 by bolts 129. The cantilevered external threaded portion 122 is cantilevered by adjusting the axial length of the thread. Here, the length of the thread can be determined based on the amplitude, frequency, etc. of the vibration generated from the motor 111.

[0050] The length of the cantilevered external threaded portion 122 can be adjusted so that the natural frequency of the motor 111 and the natural frequency of the cantilevered dynamic damper 120 are consistent with each other.

[0051] The external thread portion 121 and the cantilevered external thread portion 122 are arranged on the same axis in opposite directions relative to the damping member 124. The external thread portion 121 and the cantilevered external thread portion 122 can be bonded to opposite sides of the damping member 124 using an adhesive.

[0052] When the external threaded portion 121 and the cantilevered external threaded portion 122 are fixed to both ends of the damping member 124, the elastic member 123 in its extended state overlaps with the damping member 124. The elastic member 123 is arranged to receive the damping member 124 therein.

[0053] When the heterogeneous spring member 130 is torn in the direction of rotation of the flexible connector, the heterogeneous spring member has resistance. The heterogeneous spring member 130 may be a torsion spring with anti-torsion properties.

[0054] The heterogeneous spring component 130 includes a first spring component 132_a and a second spring component 132_b.

[0055] The first spring member 132_a is elastic when twisted clockwise relative to the rotation axis of the flexible connector.

[0056] The second spring member 132_b is elastic when twisted counterclockwise relative to the rotation axis of the flexible connector. The second spring member 132_b is arranged to receive the first spring member 132_a. Thus, by adjusting the design specifications of the first spring member 132_a and the second spring member 132_b, they are set to have the same preload, regardless of differences in their inner diameters. That is, although the first spring member 132_a and the second spring member 132_b have different inner diameters due to structural reasons, they have the same degree of elasticity when twisted clockwise and counterclockwise relative to the flexible connector.

[0057] As a method for setting the first spring member 132_a and the second spring member 132_b to have the same preload, the number of coils in the smaller inner diameter first spring member 132_a can be increased to have the same preload as the larger inner diameter second spring member 132_b. Alternatively, the distance between each coil of the smaller inner diameter first spring member 132_a can be reduced to have the same preload as the larger inner diameter second spring member 132_b. Furthermore, the coils in the smaller inner diameter first spring member 132_a can be configured to have a large cross-sectional area to have the same preload as the larger inner diameter second spring member 132_b. However, these are merely one or more embodiments, and the method for setting the first spring member 132_a and the second spring member 132_b to have the same preload is not limited to these methods. The first spring member 132_a and the second spring member 132_b are fixed to the flexible coupling by fitting and attaching to holes formed in the hub 131_a of the flexible coupling.

[0058] The power transmission unit 140 includes a lead screw 141, a guide shaft 142, and a lead screw support 143.

[0059] The lead screw bracket 143 abuts against and is attached to the main body of the housing 160. The lead screw bracket 143 is fixed to the housing 160 by means of self-tapping screws 144.

[0060] The lead screw bracket 143 can be bent in the height direction relative to the surface of the abutting housing 160 to secure the lead screw 141. A portion of the bent portion of the lead screw bracket 143 can be arranged parallel to the motor mount 112.

[0061] The lead screw bracket 143 rotatably receives the longitudinal end of the lead screw 141. The lead screw 141 can be fixed to the lead screw bracket 143 by means of bearings.

[0062] A guide shaft 142 is formed on the lead screw support 143, spaced apart from and parallel to the lead screw 141. The guide shaft 142 is disposed on either side of the lead screw 141. The guide shaft 142 is configured to pass through a portion of the linkage 150, which will be described later. Therefore, when the linkage 150 is raised and lowered along the lead screw 141, the guide shaft 142 can guide the linkage 150 along the raising and lowering range, so that the linkage 150 does not rotate along the thread of the lead screw 141.

[0063] The linkage 150 includes a main body (not shown), a groove (not shown), and a clamp (not shown).

[0064] Linkage 150 is attached to lead screw 141 to move up and down along lead screw 141. Linkage 150 includes a hole (not shown) penetrating the body, in which threads are formed internally.

[0065] The groove of the linkage 150 extends from the body along the height direction and has a U-shaped opening on one side. The clip is formed into a U-shaped form corresponding to the open side of the groove and is attached to the groove by a snap-fit ​​engagement. Here, the clip is configured to be detachable from the groove.

[0066] The housing 160 includes an upper housing 161 and a lower housing 162.

[0067] The upper housing 161 and the lower housing 162 are diagonally inclined relative to the main body. For example, if the upper housing 161 is inclined downward relative to the main body, the lower housing 162 may be inclined upward relative to the main body. However, this is only an example, and the shape of the housing 160 is not limited to this example.

[0068] The housing 160 includes a plurality of bosses (not shown) and holes (not shown) for securing the lead screw bracket 143 in place. The position of the lead screw bracket 143 is determined by the plurality of bosses when assembled into the housing 160, and self-tapping screws 144 are engaged with the holes.

[0069] A cable slit is attached between the housing 160 and the lead screw bracket 143. Here, the cable slit refers to the wire connected to the motor 111, namely, the flexible cable 170. The flexible cable 170 can be installed on both sides of the motor 111, that is, on the left and right sides.

[0070] Figure 3 It is along Figure 1 The cross-sectional view taken from line AA in the diagram.

[0071] refer to Figures 1 to 3The cantilever dynamic damper 120 can be arranged parallel to the rotation axis L1 of the lead screw 141.

[0072] When the external thread 121 of the cantilever dynamic damper 120 has a predetermined length for connection to the bolt 129, the cantilever external thread 122 has a predetermined length L in the -x axis direction. 悬臂 For example, to dampen vibrations generated by the motor being driven. The preset length of the cantilevered external thread 122 refers to the length from the fixed end to the free end, and also refers to the length from the outside of the bolt 129 to the far end of the cantilevered external thread 122.

[0073] The damping member 124 is configured such that the cantilevered external thread portion 122 and the external thread portion 121 are physically separated from each other. Vibrations generated from the driven motor 111 are transmitted to the cantilevered dynamic damper 120 via the motor mount 112. After receiving vibrations via the motor mount 112, the cantilevered dynamic damper 120 can attenuate the vibrations by utilizing the cantilevered external thread portion 122. Furthermore, the cantilevered dynamic damper 120 can minimize the residual vibrations transmitted to the lead screw support 143 by utilizing the damping member 124 and the elastic member 123. The damping member 124 has, for example, a predetermined length L in the x-axis direction. 阻尼 Here, the damping member 124 may be formed based on a rubber material. In other embodiments, the damping member 124 may be formed based on a viscoelastic gel-like material.

[0074] The free length of the elastic member 123 is greater than the length L of the damping member 124. 阻尼 Therefore, the elastic member 123 can be arranged between the external thread portion 121 and the cantilevered external thread portion 122 while maintaining its tension. Here, the elastic member 123 can be a tension spring having tension in the axial direction.

[0075] In the head-up display drive module 100 using the cantilever dynamic damper 120 according to the embodiments of this disclosure, for example, the frequency ratio is calculated to be a value greater than √2. This means that the frequency of the damping member 124 is lower than the frequency of the motor 111. Here, the frequency ratio is a value obtained by dividing the frequency of the motor 111 by the frequency of the cantilever dynamic damper 120. Therefore, for example, the vibration transmissibility (TR) of the head-up display drive module 100 using the cantilever dynamic damper 120 is calculated to be a value less than 1.0. Here, the vibration transmissibility is the ratio of the vibration transmitted to the lead screw support 143 to the vibration generated from the motor 111. For example, a vibration transmissibility of 1.0 means that all the vibration generated from the motor 111 is transmitted to the lead screw support 143. That is, the head-up display drive module 100 can effectively attenuate the vibration generated from the motor 111 by using the cantilever dynamic damper 120.

[0076] Figure 4 An exploded perspective view of the flexible connector and heterogeneous spring member according to embodiments of the present disclosure is shown in detail.

[0077] refer to Figures 1 to 4 According to embodiments of the present disclosure, the first spring member 132_a and the second spring member 132_b include arms assembled and attached to the flexible connector.

[0078] The first spring member 132_a includes a first arm 402. The second spring member 132_b includes a second arm 403.

[0079] The first arm 402 and the second arm 403 are formed by bending the ends of the coils of the first spring member 132_a and the second spring member 132_b inward.

[0080] The first arm 402 can be bent toward the rotation axis L1 of the lead screw support 143 passing through the first spring member 132_a. Furthermore, the second arm 403 can be bent toward the rotation axis L1 of the lead screw support 143 passing through the second spring member 132_b.

[0081] The flexible connector has two hubs 131_a connected to opposite sides of the spacer 131_b. Although in Figure 4 Not shown, but the flexible coupling may include a retaining pin (not shown) for generating a retaining force between the two hubs 131_a and the spacer 131_b.

[0082] Both hubs 131_a include two fixing holes 401.

[0083] The two mounting holes 401 are formed opposite each other on the outer diameter of the hub 131_a.

[0084] When an imaginary line is formed by connecting the two fixing holes 401 formed in each of the two hubs 131_a, the imaginary lines formed in the two hubs 131_a do not coincide with each other but intersect each other with respect to the axis of rotation L1. That is, when the first arm 402 is assembled and attached to one of the fixing holes 401 formed in each of the two hubs 131_a, a clockwise preload is applied to the first spring member 132_a. Moreover, when the second arm 403 is assembled and attached to one of the fixing holes 401 formed in each of the two hubs 131_a, a counterclockwise preload is applied to the second spring member 132_b.

[0085] Therefore, the heterogeneous spring member 130 has the ability to resist clockwise and counterclockwise torques transmitted to the flexible connector. Furthermore, the heterogeneous spring member 130 can dampen vibrations applied to the flexible connector.

[0086] Although exemplary embodiments of this disclosure have been described for illustrative purposes, those skilled in the art will recognize that various modifications, additions, and substitutions are possible without departing from the spirit and scope of the claimed utility model. Therefore, exemplary embodiments of this disclosure have been described for the sake of brevity and clarity. The scope of the technical concept of these embodiments is not limited to the illustrations. Therefore, those skilled in the art will understand that the scope of the claimed utility model is not limited to the embodiments explicitly described above, but is limited by the claims and their equivalents.

[0087] This application claims priority to Korean Patent Application No. 10-2024-0044630, filed with the Korean Intellectual Property Office on April 2, 2024, pursuant to 35 USC § 119(a), the entire contents of which are incorporated herein by reference for all purposes.

Claims

1. A vibration damping device for a head-up display driving module, characterized in that, The vibration damping device includes: case; The motor is mounted on the end portion of the housing via a motor mounting bracket; A lead screw is configured to abut against the central region of the housing, the lead screw extending from and connected to the rotating shaft of the motor; A lead screw bracket is configured to fix the lead screw. The linkage is configured to raise or lower the lead screw based on the driving force of the motor; A flexible connector configured to connect the rotating shaft of the motor and the lead screw; A heterogeneous spring component is connected to the flexible connector to isolate the torsional vibration of the flexible connector; and A cantilever dynamic vibration damper is disposed between the motor mounting component and the lead screw support, the cantilever dynamic vibration damper being configured to absorb the vibration of the motor and attenuate the vibration generated by the motor.

2. The vibration damping device for a head-up display driving module according to claim 1, characterized in that, The heterogeneous spring component includes: The first spring member is elastic based on clockwise torsion relative to the rotation axis of the flexible connector; and The second spring member is elastic based on counterclockwise torsion relative to the rotation axis of the flexible connector; and The second spring member is arranged outside the first spring member to cover the first spring member.

3. The vibration damping device for a head-up display driving module according to claim 1, characterized in that, The flexible connector includes two hubs connected to opposite sides of the spacer, and Each of the two hubs includes two mounting holes formed toward the center, the two mounting holes being configured to face each other on the outer diameter of the hub.

4. The vibration damping device for a head-up display driving module according to claim 3, characterized in that, Each of the heterogeneous spring members is assembled and attached via two arms formed on the inner side to two fixing holes formed in each of the two different hubs.

5. The vibration damping device for a head-up display driving module according to claim 4, characterized in that, The heterogeneous spring members are each assembled and attached to the retaining holes formed in each of the different hubs to maintain the corresponding preload applied in the clockwise and counterclockwise directions.

6. The vibration damping device for a head-up display driving module according to claim 1, characterized in that, The cantilever dynamic vibration damper includes: The external thread portion is configured to penetrate both ends of the lead screw bracket and be attached to the lead screw bracket by bolts; The cantilevered external thread portion is configured to penetrate both ends of the motor mounting component and be attached to the motor mounting component by bolts; A damping member is disposed between the external thread portion and the cantilevered external thread portion to attenuate vibrations transmitted between the external thread portion and the cantilevered external thread portion; and An elastic member is configured to overlap with the damping member and be compressed to have a predetermined tension.

7. The vibration damping device for a head-up display driving module according to claim 6, characterized in that, The cantilever dynamic damper is configured to physically separate the lead screw support from the motor mounting component.

8. The vibration damping device for a head-up display driving module according to claim 6, characterized in that, The cantilevered external threaded portion is configured to be adjusted to a preset mass and preset length, such that the natural frequency of the motor is equal to the target frequency of the cantilevered dynamic damper.

9. The vibration damping device for a head-up display driving module according to claim 6, characterized in that, The cantilevered dynamic damper is arranged such that the rotation axis of the motor coincides with the rotation axis of the lead screw.

10. The vibration damping device for a head-up display driving module according to claim 6, characterized in that, The cantilever dynamic vibration damper is also configured as follows: Adjust the length of the damping member based on the natural frequency of the motor; and Adjust the tension of the elastic member.

11. A vibration damping device for a head-up display driving module, characterized in that, The vibration damping device includes: case; The motor is located at the end of the housing; A lead screw is connected to the motor at the rotating shaft of the motor and extends from the motor; A lead screw support is configured to position the lead screw. A linkage component, connected to the lead screw, includes an aspherical mirror; A controller is configured to control the motor to rotate the aspherical mirror by raising or lowering the linkage; A flexible connector is attached to the lead screw at the rotating shaft of the motor; One or more heterogeneous spring members are connected to the flexible coupling and configured to isolate torsional vibrations of the flexible coupling; and A cantilever dynamic vibration damper is disposed between the motor mounting and the lead screw support, and the cantilever dynamic vibration damper is configured to absorb and attenuate the vibration generated by the motor.

12. The vibration damping device for a head-up display driving module according to claim 11, characterized in that, The one or more heterogeneous spring components include: The first spring member is elastic based on clockwise torsion relative to the rotation axis of the flexible connector; and The second spring member is elastic based on counterclockwise torsion relative to the rotation axis of the flexible connector; and The second spring member is arranged outside the first spring member to cover the first spring member.

13. The vibration damping device for a head-up display driving module according to claim 11, characterized in that, The flexible coupling includes at least two hubs connected to opposite sides of the spacer, and Each of the at least two hubs includes two mounting holes formed toward the center, the two mounting holes being configured to be opposite each other on the outer diameter of the hub.

14. The vibration damping device for a head-up display driving module according to claim 11, characterized in that, The cantilever dynamic vibration damper includes: The external thread portion is configured to penetrate both ends of the lead screw bracket and be attached to the lead screw bracket by bolts; The cantilevered external thread portion is configured to penetrate both ends of the motor mounting component and be attached to the motor mounting component by bolts; A damping member is disposed between the external thread portion and the cantilevered external thread portion to attenuate vibrations transmitted between the external thread portion and the cantilevered external thread portion; and An elastic member is configured to overlap with the damping member and be compressed to have a predetermined tension.

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