Adjustable HUD mirror rotating shaft tightness assembly and HUD mirror

Abstract

The utility model discloses a adjustable HUD mirror pivot tightness subassembly, include: mirror support, elastic sheet, elastic sheet fixed screw and elastic sheet adjusting screw, wherein, the mirror support is opened with elastic sheet draw -in groove, elastic sheet passes through elastic sheet draw -in groove setting, one end of elastic sheet is fixedly connected with mirror support through elastic sheet fixed screw, the other end of elastic sheet is free end, and mirror support is opened with screw hole to the position corresponding to elastic sheet free end, elastic sheet adjusting screw with screw hole screw cooperation, and the top end of elastic sheet adjusting screw is made to be in close contact with the free end of elastic sheet by screwing, and the elastic sheet is pushed to the elastic deformation of pivot direction of mirror, the utility model discloses the deformation of elastic sheet is controlled through the screwing amount of elastic sheet adjusting screw, and then the accurate control elastic sheet to pivot's pressure tightness, can according to the maximum torque demand flexible setting tightness of mirror normal rotation, avoid the problem of too tight or too loose in traditional fixed mode.

Description

Technical Field

[0001] This utility model relates to the field of HUD (Head-Up Display) optical component technology, and in particular to an adjustable HUD rotating mirror shaft tensioning component and a HUD rotating mirror. Background Technology

[0002] In the optical system of a HUD device, the rotating mirror is the core component for adjusting the image angle. The tightness of its rotating shaft directly affects the smoothness of the mirror's rotation, the stability of its settings, and the final imaging effect. In existing technology, the rotating mirror shaft is typically secured using a spring-loaded clip and screws, specifically by directly fixing one or both ends of the spring-loaded clip to a bracket with screws. This fixing method has the following technical drawbacks:

[0003] The flatness of the screw post is greatly affected. If there is an error in the flatness of the screw post, it will easily lead to uneven force on the spring piece, which will affect the consistency of the clamping of the shaft.

[0004] The screw fixing side will generate additional torque on the spring, which will be transmitted to the shaft and disrupt the normal force balance of the shaft;

[0005] If a structure is used to fix the spring at both ends with screws, the two ends of the spring will be completely tightened, restricting the spring's elastic deformation freedom. Under the same preset deformation, the spring will exert a reaction force on the rotating shaft several times the design value, causing the rotating shaft to be over-compressed. This will eventually lead to uneven rotation of the rotating mirror, jamming, or even screen tilting due to unbalanced force on the rotating shaft. If the screw fixing force is reduced to avoid over-compression, there will be a risk of the rotating shaft loosening, which will not guarantee the positional stability of the rotating mirror during operation.

[0006] The aforementioned problems severely affect the optical performance and user experience of HUD devices. Therefore, there is an urgent need for a component structure that can precisely adjust the tightness of the hinge and avoid excessive compression or loosening. Utility Model Content

[0007] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an adjustable HUD rotating mirror shaft tensioning component. By optimizing the fixing and adjustment structure of the spring clip, it achieves precise control over the tension of the rotating mirror shaft, effectively solving the problems of uneven gear shifts and screen tilt caused by excessively tight shaft fit. At the same time, it eliminates the risk of shaft loosening, ensuring smooth rotation of the rotating mirror and imaging stability.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] An adjustable HUD rotating mirror axis tensioning assembly includes: a rotating mirror bracket, a spring, a spring fixing screw, and a spring adjusting screw; wherein, the rotating mirror bracket has a spring slot, and the spring passes through the spring slot; one end of the spring is fixedly connected to the rotating mirror bracket by the spring fixing screw, and the other end of the spring is a free end, and the rotating mirror bracket has a screw hole corresponding to the position of the free end of the spring; the spring adjusting screw is threaded into the screw hole, and tightening the spring adjusting screw causes its top end to press against the free end of the spring, pushing the spring to elastically deform in the direction of the rotating mirror axis.

[0010] In this invention, the spring clip slot is a through-type slot, and the width of the spring clip slot is adapted to the thickness of the spring clip to limit the installation position of the spring clip.

[0011] In this invention, the rotating mirror bracket is provided with a U-shaped groove, which is used to engage the rotating shaft of the rotating mirror, so that the rotating mirror can rotate around the rotating shaft within the U-shaped groove.

[0012] Preferably, the rotating mirror bracket is integrally injection molded from engineering plastic.

[0013] Preferably, the spring is made of spring steel.

[0014] Preferably, the spring is provided with an anti-dislodgement protrusion to prevent the free end of the spring from sliding out of the spring slot.

[0015] Based on the above, this utility model also proposes a HUD rotating mirror, including the adjustable HUD rotating mirror shaft tensioning assembly and the rotating mirror; wherein, the rotating shaft of the rotating mirror is engaged with a U-shaped groove, so that the rotating mirror can rotate around the rotating shaft within the U-shaped groove.

[0016] In this invention, the opening size of the U-shaped groove is adapted to the diameter of the rotating shaft of the rotating mirror, so as to achieve stable engagement and rotation of the rotating shaft within the U-shaped groove.

[0017] The adjustable HUD rotating mirror axis tensioning component disclosed in this utility model has the following beneficial effects:

[0018] This invention controls the deformation of the spring by adjusting the screw of the spring, thereby precisely controlling the clamping force of the spring on the rotating shaft. The tightness can be flexibly set according to the maximum torque requirement for normal rotation of the rotating mirror, avoiding the problems of being too tight or too loose in traditional fixing methods.

[0019] This utility model's spring is fixed at only one end by a spring fixing screw, and the other end is tightened by an adjusting screw. The structure design without both ends being pulled tight avoids the spring from generating additional torque due to the fixing method, while reducing the sensitivity to the flatness of the screw post, ensuring that the spring is subjected to uniform force, and thus ensuring the balance of force on the rotating shaft.

[0020] This invention effectively solves the problems of uneven rotation of the rotating mirror and screen tilt caused by excessively tight hinge fit. It also eliminates the risk of loose hinge, ensuring the smoothness and positional stability of the rotating mirror during rotation, and ultimately improving the imaging effect and user experience of HUD devices.

[0021] The overall assembly of this utility model achieves its function through the cooperation of a rotating mirror bracket, spring, fixing screw, and adjusting screw. It has a simple structure, low assembly difficulty, and is easy to mass-produce and maintain. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is an exploded view of the overall structure of the HUD rotating mirror of this utility model.

[0024] Figure 2 This is a schematic diagram of the overall structure of the HUD rotating mirror of this utility model.

[0025] Figure 3 This is a schematic diagram of the structure of the rotating mirror bracket of this utility model. Detailed Implementation

[0026] The utility model will be further described in detail below with reference to the specific embodiments and accompanying drawings. Except for the contents specifically mentioned below, the processes, conditions, and experimental methods for implementing this utility model are all common knowledge and general knowledge in the field, and this utility model has no particular limitations.

[0027] Figures 1-3 1- Rotating mirror bracket; 11- U-shaped groove; 12- Spring clip slot; 13- Screw hole; 2- Rotating mirror; 21- Rotating shaft; 3- Spring clip; 31- Spring clip protrusion; 4- Spring clip fixing screw; 5- Spring clip adjusting screw.

[0028] This utility model relates to a HUD rotating mirror, comprising a rotating mirror bracket, a rotating mirror, a spring, a spring fixing screw, and a spring adjusting screw. The rotating mirror bracket has a U-shaped groove and a spring slot. The U-shaped groove is used to engage the rotating shaft of the rotating mirror, allowing the mirror to rotate around the shaft within the U-shaped groove. The spring passes through the spring slot, and one end of the spring is fixedly connected to the rotating mirror bracket via the spring fixing screw. The other end of the spring is a free end, and a screw hole is provided on the rotating mirror bracket at the corresponding position of the free end. The spring adjusting screw is threaded into the screw hole. By turning the spring adjusting screw, its tip presses against the free end of the spring, pushing the spring to elastically deform towards the rotating shaft of the mirror, thereby creating a clamping force on the rotating shaft within the U-shaped groove. The amount of pressure applied by the spring adjusting screw is determined based on the maximum torque required for normal rotation of the rotating mirror, to precisely control the clamping force of the spring on the rotating shaft, keeping the rotating shaft within a preset tightness range.

[0029] Example

[0030] like Figures 1-3 As shown, this embodiment provides an adjustable HUD rotating mirror shaft tensioning assembly, including a rotating mirror bracket 1, a rotating mirror 2, a spring 3, a spring fixing screw 4, and a spring adjusting screw 5.

[0031] The rotating mirror bracket 1 is integrally injection molded from engineering plastic. A U-shaped groove 11 is provided on one side of its top. The groove opening size of the U-shaped groove 11 is adapted to the diameter of the rotating shaft 21 of the rotating mirror 2. The rotating shaft 21 of the rotating mirror 2 can be inserted into the U-shaped groove 11 and can rotate freely around its own axis within the U-shaped groove 11. A spring clip slot 12 is provided on the other side of the top of the rotating mirror bracket 1. The spring clip slot 12 is a through groove, and its groove width matches the width of the spring clip 3, which is used to limit the installation position of the spring clip 3.

[0032] The spring 3 is made of spring steel with a high elastic coefficient. Its length is greater than the length of the spring slot 12. After the spring 3 passes through the spring slot 12, one end extends to the fixing area of ​​the rotating mirror bracket 1. The fixing area is provided with a screw hole. The spring fixing screw 4 passes through the through hole on the spring 3 and is threaded into the screw hole to fix one end of the spring 3 to the rotating mirror bracket 1. The other end of the spring 3 extends to the adjustment area of ​​the rotating mirror bracket 1. The adjustment area is provided with a screw hole 13 that matches the spring adjusting screw 5. After the spring adjusting screw 5 is screwed into the screw hole 13, its top end can abut against the free end surface of the spring 3.

[0033] During assembly, firstly, the rotating shaft 21 of the rotating mirror 2 is inserted into the U-shaped groove 11 of the rotating mirror bracket 1; then, the spring piece 3 is passed through the spring piece slot 12, so that the fixed end of the spring piece 3 is fixed to the rotating mirror bracket 1 by the spring piece fixing screw 4; finally, the spring piece adjusting screw 5 is turned down, so that its top gradually presses down on the free end of the spring piece 3. Under the action of elastic force, the spring piece 3 deforms in the direction of the rotating shaft 21 until the spring piece 3 is in close contact with the surface of the rotating shaft 21 and a preset clamping force is generated. The spring piece 3 is provided with an anti-dislodgement protrusion 31 to prevent the spring piece from deforming too much and slipping out of the spring piece slot 12 due to excessive impact force during use.

[0034] The amount of pressure applied by the spring adjustment screw 5 is determined by testing the rotation torque of the rotating mirror 2: a torque wrench is used to test the rotation torque of the rotating mirror 2. When the rotating mirror 2 can rotate smoothly and the torque value reaches the maximum torque required for normal operation, the spring adjustment screw 5 is stopped. At this time, the tightness of the rotating shaft 21 is in the best state, which ensures that the rotating mirror 2 rotates smoothly and the gears are even, and also prevents the rotating shaft 21 from becoming loose.

[0035] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0036] As used in this invention, the term "comprising" is an open-ended expression, meaning it includes the contents specified in this invention, but does not exclude other aspects.

[0037] As used in this invention, the term "and / or" includes any one and all combinations of one or more of the related listed items.

[0038] The scope of protection of this utility model is not limited to the above embodiments. Any variations and advantages that can be conceived by those skilled in the art without departing from the spirit and scope of the utility model are included in this utility model and are protected by the appended claims.

Claims

1. An adjustable HUD rotating mirror shaft tensioning assembly, characterized in that, include: The rotating mirror bracket (1), the spring (3), the spring fixing screw (4), and the spring adjusting screw (5); among them, The rotating mirror bracket (1) is provided with a spring clip slot (12), and the spring clip (3) is disposed through the spring clip slot (12); One end of the spring (3) is fixedly connected to the rotating mirror bracket (1) by the spring fixing screw (4), and the other end of the spring (3) is a free end, and a screw hole (13) is provided on the rotating mirror bracket (1) at the position corresponding to the free end of the spring (3). The spring adjustment screw (5) is threaded into the screw hole (13). Tightening the spring adjustment screw (5) causes its top end to press against the free end of the spring (3) and pushes the spring (3) to undergo elastic deformation in the direction of the rotating shaft (21) of the rotating mirror (2).

2. The adjustable HUD rotating mirror shaft tensioning assembly according to claim 1, characterized in that, The spring clip slot (12) is a through slot, and the width of the spring clip slot (12) is adapted to the width of the spring clip (3) to limit the installation position of the spring clip (3).

3. The adjustable HUD rotating mirror shaft tensioning assembly according to claim 1, characterized in that, The rotating mirror bracket (1) is provided with a U-shaped groove (11), which is used to engage the rotating shaft (21) of the rotating mirror (2), so that the rotating mirror (2) can rotate around the rotating shaft (21) in the U-shaped groove (11).

4. The adjustable HUD rotating mirror shaft tensioning assembly according to claim 1, characterized in that, The rotating mirror bracket (1) is integrally injection molded from engineering plastic.

5. The adjustable HUD rotating mirror shaft tensioning assembly according to claim 1, characterized in that, The spring (3) is made of spring steel.

6. The adjustable HUD rotating mirror shaft tensioning assembly according to claim 1, characterized in that, The spring (3) is provided with an anti-dislodgement protrusion (31) to prevent the free end of the spring (3) from sliding out of the spring slot (12).

7. A HUD rotating mirror, characterized in that, include: The adjustable HUD rotating mirror axis tensioning assembly and rotating mirror (2) as described in any one of claims 1-6; wherein, The rotating shaft (21) of the rotating mirror (2) is engaged with the U-shaped groove (11), so that the rotating mirror (2) can rotate around the rotating shaft (21) in the U-shaped groove (11).

8. The HUD rotating mirror according to claim 7, characterized in that, The groove size of the U-shaped groove (11) is adapted to the diameter of the rotating shaft (21) of the rotating mirror (2) so as to achieve stable engagement and rotation of the rotating shaft (21) in the U-shaped groove (11).

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