Automobile head-up display

Abstract

The utility model relates to an automobile head-up display which comprises a curved mirror, a fixing support for supporting the curved mirror and a driving unit arranged on the fixing support and used for driving the curved mirror to rotate, an arc-shaped tooth block is arranged at the end, close to the driving unit, of the curved mirror, and a gear is arranged at the output end of the driving unit. The gear is connected with the arc-shaped tooth block in a meshed mode, rotating shafts are arranged at the two ends of the curved mirror respectively, each rotating shaft comprises a connecting part, a rotating part and a stopping part, the connecting parts are connected with the ends of the curved mirror, the rotating parts are arranged between the stopping parts and the connecting parts, and the stopping parts are connected with the rotating parts. The fixing support comprises two supporting plates which are parallel and oppositely arranged, rotating holes are formed in the supporting plates, and the rotating parts are arranged in the rotating holes and rotationally connected with the rotating holes. The automobile head-up display designed by the utility model is simple in transmission mechanism, easy to assemble and disassemble, and low in noise during operation.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile head-up display, in particular to an automobile head-up display. Background Art

[0002] With the development of automobile technology, head-up displays have become more and more popular, providing drivers with a better driving experience and avoiding the need for drivers to look down at vehicle information on the dashboard during driving, thus improving driving safety. The head-up display of a car adjusts the image height by rotating the curved mirror. The existing rotating transmission mechanism has many parts, which makes the assembly of the head-up display more complicated and requires higher assembly skills of the operators. Otherwise, it is easy to cause the problem of insufficient assembly precision and high noise during the operation of the transmission mechanism. Utility Model Content

[0003] In view of the above-mentioned problems, the purpose of the present utility model is to provide a car head-up display, which has a simple transmission mechanism, is easy to assemble and disassemble, and has low noise during operation.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] Provided is a car head-up display, comprising a curved mirror, a fixed bracket supporting the curved mirror, and a driving unit arranged on the fixed bracket for driving the curved mirror to rotate, wherein an arc-shaped tooth block is arranged at one end of the curved mirror close to the driving unit, a gear is arranged at the output end of the driving unit, the gear is meshed and connected with the arc-shaped tooth block, a rotating shaft is respectively arranged at both ends of the curved mirror, the rotating shaft comprises a connecting portion, a rotating portion, and a stopper, the connecting portion is connected to the end of the curved mirror, the rotating portion is arranged between the stopper and the connecting portion, the fixed bracket comprises two supporting plates arranged in parallel and opposite to each other, the supporting plate is provided with a rotating hole, the rotating portion is placed in the rotating hole, and is rotatably connected to the rotating hole.

[0006] In this design, a rotating shaft is provided at both ends of the curved mirror, and a rotating hole matching the rotating shaft is provided on the support plates on both sides of the curved mirror. In order to reduce the difficulty of installation and ensure the stability of the matching between the rotating shaft and the rotating hole, the rotating shaft is designed with a connecting part, a rotating part, and a stopper. The rotating part can be easily installed to the rotating hole, and the stopper plays a limiting role to prevent the rotating shaft from moving in the axial direction. In order to reduce weight, the connecting part adopts a cross-shaped weight-reducing structure design while ensuring the structural strength. An arc-shaped tooth block is provided below the rotating shaft at one end of the curved mirror, and a gear is provided at the output end of the driving unit. The gear and the arc-shaped tooth block are meshed to provide driving force for the rotation of the curved mirror. This primary transmission structure is simple and reliable. At the same time, the driving unit can use a stepping motor, which can control the rotation angle with low noise and precision. Through this primary transmission mode and the rotation matching structure design, on the basis of ensuring the realization of the function, the number of parts is reduced, the difficulty of assembling and disassembling the head-up display is reduced, and the noise when the curved mirror rotates is reduced, which brings a better experience to users.

[0007] Furthermore, the rotating hole is provided with a notch extending to the edge of the supporting plate.

[0008] The rotating hole is provided with a straight vertical notch or an inclined notch corresponding to the size of the rotating part. When the rotating shaft is matched with the rotating hole, the rotating part directly passes through the notch into the rotating hole and can rotate freely in the rotating hole.

[0009] Furthermore, the rotating portion is in a straight line shape, and the rotating portion can pass through the notch into the rotating hole, and the stopper and the connecting portion are respectively located at two ends of the rotating hole.

[0010] The rotating part is clamped in a straight line between the stop part and the connecting part. When the rotating part passes through the notch and rotates a certain angle, the rotating part deviates from the notch and cannot be separated. Therefore, the radial movement of the rotating shaft is restricted, making it impossible for the rotating part to escape from the rotating hole. There is no need to set an additional stop part to limit the radial movement of the rotating shaft.

[0011] Furthermore, the stopper is circular, and the diameter of the stopper is larger than the diameter of the rotating hole.

[0012] The stopper and the connecting part are respectively located at both ends of the rotating hole. The diameter of the stopper is larger than the aperture of the rotating hole. At the same time, the end surface of the connecting part close to the rotating hole is also larger than the rotating hole. Therefore, the axial movement of the rotating shaft is restricted, and the rotating part and the rotating hole cooperate stably, so that there will be no abnormal rotation deviation when the curved mirror rotates.

[0013] Furthermore, the fixed bracket is provided with a backlash-eliminating spring sheet, and the backlash-eliminating spring sheet is clamped between the support plate and the rotating shaft.

[0014] A clearance-eliminating spring is arranged between the rotating shaft and the supporting plate to eliminate the axial clearance between the rotating shaft and the supporting plate, thereby preventing the axial deviation and movement of the curved mirror during the rotation process, and making the movement more stable and reliable.

[0015] Furthermore, the backlash-eliminating spring sheet includes a clamping sheet, and two elastic sheets connected to the clamping sheet and arranged in parallel and at intervals, the two elastic sheets are respectively located on both sides of the rotating part, and two surfaces of the elastic sheets are respectively in contact with the connecting part and the support plate.

[0016] The clamping plate and the elastic plate constitute the clamping structure of the anti-backlash spring sheet. The anti-backlash spring sheet can be directly clamped on the support plate. The clamping plate and the elastic plate are respectively clamped with the two side walls of the support plate. At the same time, the elastic plate is a bent structure with a bent flange. The flange is elastically abutted against the side wall of the connecting part of the rotating shaft and the side wall of the support plate, thereby avoiding axial deviation and movement of the curved mirror.

[0017] Furthermore, the clamping plate is provided with a plurality of mounting holes, and a corresponding limiting protrusion is provided on the side of the support plate away from the curved mirror, the limiting protrusions are distributed on both sides of the notch, and the limiting protrusions are embedded in the mounting holes.

[0018] In order to prevent the anti-backlash spring from shaking, a limiting matching structure is designed between the clamping plate and the supporting plate, a mounting hole is designed on the clamping plate, and a limiting protrusion is designed on the supporting plate. When the anti-backlash spring is clamped on the supporting plate, the limiting protrusion is embedded in the mounting hole, thereby limiting the shaking of the anti-backlash spring.

[0019] Furthermore, a buckle and an elastic member connected to the buckle are provided on the side of the arc-shaped tooth block.

[0020] A buckle is designed beside the arc-shaped tooth block, and the buckle is elastically connected to the fixed panel on which the head-up display is installed through an elastic part, so that the curved mirror is subjected to a certain tensile force, thereby ensuring a close fit between the arc-shaped tooth block and the gear at the output end of the drive unit, eliminating the fit gap between the two, and improving the accuracy of the rotation adjustment of the curved mirror.

[0021] Furthermore, the fixing bracket also includes a connecting plate, and the connecting plate is located between the two supporting plates and connected to the supporting plates.

[0022] In order to facilitate the installation of the fixed bracket on the fixed table top, the fixed bracket can be designed as an integrated form, and the two support plates are connected by a connecting plate to form a U-shaped structure. The connection between the fixed bracket and the fixed table top can be fixed by directly locking the connecting plate and the fixed table top with screws.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] In this design, a rotating shaft is provided at both ends of the curved mirror, and a rotating hole matching the rotating shaft is provided on the support plates on both sides of the curved mirror. In order to reduce the difficulty of installation and ensure the stability of the matching between the rotating shaft and the rotating hole, the rotating shaft is designed with a connecting part, a rotating part, and a stopper. The rotating part can be easily installed to the rotating hole, and the stopper plays a limiting role to prevent the rotating shaft from moving in the axial direction. In order to reduce weight, the connecting part adopts a cross-shaped weight-reducing structure design while ensuring the structural strength. An arc-shaped tooth block is provided below the rotating shaft at one end of the curved mirror, and a gear is provided at the output end of the driving unit. The gear and the arc-shaped tooth block are meshed to provide driving force for the rotation of the curved mirror. This primary transmission structure is simple and reliable. At the same time, the driving unit can use a stepping motor, which can control the rotation angle with low noise and precision. Through this primary transmission mode and the rotation matching structure design, on the basis of ensuring the realization of the function, the number of parts is reduced, the difficulty of assembling and disassembling the head-up display is reduced, and the noise when the curved mirror rotates is reduced, which brings a better experience to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of a car head-up display according to an embodiment of the utility model.

[0026] Figure 2 for Figure 1 Exploded diagram.

[0027] Figure 3 This is a structural diagram of a rotating shaft according to an embodiment of the present utility model.

[0028] Figure 4 This is a structural diagram of a fixing bracket according to an embodiment of the utility model.

[0029] Figure 5 This is another structural diagram of a fixing bracket according to an embodiment of the utility model.

[0030] Illustrations: 1. curved mirror; 2. fixed bracket; 3. driving unit; 11. rotating shaft; 12. arc-shaped tooth block; 13. buckle; 14. elastic member; 21. supporting plate; 22. anti-backlash spring; 23. connecting plate; 31. gear; 111. connecting part; 112. rotating part; 113. stopper; 211. rotating hole; 212. notch; 213. limiting protrusion; 221. clamping piece; 222. elastic piece; 223. mounting hole. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0032] like Figures 1 to 4 As shown, a car head-up display is provided, including a curved mirror 1, a fixed bracket 2 supporting the curved mirror 1, and a driving unit 3 arranged on the fixed bracket 2 for driving the curved mirror 1 to rotate, an arc-shaped tooth block 12 is arranged at one end of the curved mirror 1 close to the driving unit 3, a gear 31 is arranged at the output end of the driving unit 3, the gear 31 is meshed and connected with the arc-shaped tooth block 12, a rotating shaft 11 is respectively arranged at both ends of the curved mirror 1, the rotating shaft 11 includes a connecting portion 111, a rotating portion 112, and a stopper 113, the connecting portion 111 is connected to the end of the curved mirror 1, the rotating portion 112 is arranged between the stopper 113 and the connecting portion 111, the fixed bracket 2 includes two supporting plates 21 arranged in parallel and oppositely, the supporting plate 21 is provided with a rotating hole 211, the rotating portion 112 is placed in the rotating hole 211, and is rotatably connected with the rotating hole 211.

[0033] In this design, the two ends of the curved mirror 1 are provided with a rotating shaft 11, and the supporting plates 21 on both sides of the curved mirror 1 are provided with a rotating hole 211 matching the rotating shaft 11. In order to reduce the difficulty of installation and ensure the stability of the matching between the rotating shaft 11 and the rotating hole 211, the rotating shaft 11 is designed with a connecting part 111, a rotating part 112, and a stopper 113. The rotating part 112 can be easily installed in the rotating hole 211, and the stopper 113 plays a limiting role to prevent the rotating shaft 11 from moving in the axial direction. In order to reduce weight, the connecting part 111 adopts a cross-shaped weight-reducing structure design while ensuring the structural strength. An arc-shaped tooth block 12 is arranged below the rotating shaft 11 at one end of the curved mirror 1, and a gear 31 is arranged at the output end of the driving unit 3. The gear 31 is meshed with the arc-shaped tooth block 12 to provide driving force for the rotation of the curved mirror 1. This primary transmission structure is simple and reliable. At the same time, the driving unit 3 can use a stepping motor, which can control the rotation angle with low noise and precision. Through this one-stage transmission mode and rotation matching structure design, the number of parts is reduced while ensuring the function is realized, the difficulty of assembling and disassembling the head-up display is reduced, and the noise during the rotation of the curved mirror 1 is reduced, bringing a better experience to users.

[0034] like Figure 3 and Figure 4As shown, the rotating hole 211 is provided with a notch 212 extending to the edge of the support plate 21, the rotating portion 112 is in a straight line shape, and the rotating portion 112 can pass through the notch 212 to enter the rotating hole 211, and the stopper 113 and the connecting portion 111 are respectively located at both ends of the rotating hole 211. The stopper 113 is circular, and the diameter of the stopper 113 is larger than the aperture of the rotating hole 211. The rotating hole 211 is provided with a straight vertical notch 212 or an inclined notch 212 corresponding to the size of the rotating portion 112, and the rotating portion 112 is in a straight line shape and sandwiched between the stopper 113 and the connecting portion 111. When the rotating shaft 11 is matched with the rotating hole 211, the rotating portion 112 directly passes through the notch 212 to enter the rotating hole 211, and can rotate freely in the rotating hole 211. When the rotating part 112 passes through the notch 212 and rotates a certain angle, the rotating part 112 deviates from the notch 212 and cannot be separated, so the radial movement of the rotating shaft 11 is restricted, so that the rotating part 112 cannot be separated from the rotating hole 211, and there is no need to set up an additional stopper to limit the radial movement of the rotating shaft 11. The stopper 113 and the connecting part 111 are respectively located at both ends of the rotating hole 211, and the diameter of the stopper 113 is larger than the hole diameter of the rotating hole 211. At the same time, the size of the end face of the connecting part 111 close to the rotating hole 211 is also larger than the rotating hole 211. Therefore, the axial movement of the rotating shaft 11 is restricted, and the rotating part 112 and the rotating hole 211 cooperate stably, so that there will be no abnormal rotation deviation when the curved mirror 1 rotates.

[0035] like Figure 1 , Figure 2 and Figure 4As shown, the fixed bracket 2 is provided with a backlash-eliminating spring piece 22, which is clamped between the support plate 21 and the rotating shaft 11. The backlash-eliminating spring piece 22 includes a clamping piece 221, two elastic pieces 222 connected to the clamping piece 221 and arranged in parallel and spaced apart, the two elastic pieces 222 are respectively located on both sides of the rotating portion 112, and the two sides of the elastic piece 222 are respectively abutted against the connecting portion 111 and the support plate 21. The clamping piece 221 is provided with a plurality of mounting holes 223, and the side of the support plate 21 away from the curved mirror 1 is provided with corresponding limiting protrusions 213, the limiting protrusions 213 are distributed on both sides of the notch 212, and the limiting protrusions 213 are embedded in the mounting holes 223. The backlash-eliminating spring piece 22 is arranged between the rotating shaft 11 and the supporting plate 21 to eliminate the axial gap between the rotating shaft 11 and the supporting plate 21, and to prevent the axial deviation and movement of the curved mirror 1 during the rotation process, so that the movement is more stable and reliable. The clamping piece 221 and the elastic piece 222 form a clamping structure of the backlash-eliminating spring piece 22. The backlash-eliminating spring piece 22 can be directly clamped on the support plate 21. The clamping piece 221 and the elastic piece 222 are respectively clamped with the two side walls of the support plate 21. At the same time, the elastic piece 222 is a bent structure with a bent flange. The flange elastically abuts against the side wall of the connecting portion 111 of the rotating shaft 11 and the side wall of the support plate 21, thereby preventing the axial deviation and movement of the curved mirror 1. In order to prevent the backlash-eliminating spring piece 22 from shaking, a limiting matching structure is designed between the clamping piece 221 and the support plate 21. A mounting hole 223 is designed on the clamping piece 221, and a limiting protrusion 213 is designed on the support plate 21. When the backlash-eliminating spring piece 22 is clamped on the support plate 21, the limiting protrusion 213 is embedded in the mounting hole 223, thereby limiting the shaking of the backlash-eliminating spring piece 22.

[0036] like Figure 1 and Figure 2 As shown, a buckle 13 and an elastic member 14 connected to the buckle 13 are also provided beside the arc-shaped tooth block 12. The buckle 13 is designed beside the arc-shaped tooth block 12, and the buckle 13 is elastically connected to the fixed panel on which the head-up display is installed through the elastic member 14, so that the curved mirror 1 is subjected to a certain tension, thereby ensuring that the arc-shaped tooth block 12 and the gear 31 at the output end of the driving unit 3 are closely matched, eliminating the matching gap between the two, and improving the accuracy of the rotation adjustment of the curved mirror 1.

[0037] like Figure 4 As shown, the fixed bracket 2 also includes a connecting plate 23, which is located between the two support plates 21 and connected to the support plates 21. In order to facilitate the installation of the fixed bracket 2 on the fixed table, the fixed bracket 2 can be designed as an integrated form, and the two support plates 21 are connected by the connecting plate 23 to form a U-shaped structure. The connection between the fixed bracket 2 and the fixed table can be fixed by directly locking the connecting plate 23 and the fixed table with screws.

[0038] The fixing bracket 2 may be in various forms, but its main structural design and function are the same as those of the above embodiment. Figure 5 As shown, the fixing bracket 2 is in a separate form, that is, L-shaped fixing brackets 2 are respectively arranged on both sides of the curved screen, and the connecting plates 23 are not used to connect them into a whole. The horizontal part of the L-shaped fixing bracket 2 can be directly locked on the fixing table with screws.

[0039] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the definition of "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A head-up display for an automobile, comprising a curved mirror, a fixing bracket supporting the curved mirror, and a driving unit provided on the fixing bracket for driving the curved mirror to rotate, characterized in that: An arc-shaped tooth block is provided at one end of the curved mirror close to the driving unit, and a gear is provided at the output end of the driving unit, and the gear is meshed and connected with the arc-shaped tooth block. A rotating shaft is provided at both ends of the curved mirror, and the rotating shaft includes a connecting part, a rotating part, and a stop part. The connecting part is connected to the end of the curved mirror, and the rotating part is arranged between the stop part and the connecting part. The fixed bracket includes two supporting plates arranged in parallel and opposite to each other, and the supporting plate is provided with a rotating hole. The rotating part is placed in the rotating hole and is rotatably connected to the rotating hole.

2. The automotive head-up display according to claim 1, characterized in that: The rotating hole is provided with a notch extending to the edge of the supporting plate.

3. The automotive head-up display according to claim 2, characterized in that: The rotating part is in a straight line shape and can pass through the notch into the rotating hole. The stopper and the connecting part are respectively located at two ends of the rotating hole.

4. The automotive head-up display according to claim 3, characterized in that: The stopper is circular, and the diameter of the stopper is larger than the diameter of the rotating hole.

5. The automotive head-up display according to claim 2, characterized in that: The fixing bracket is provided with a backlash-eliminating spring sheet, and the backlash-eliminating spring sheet is clamped between the supporting plate and the rotating shaft.

6. The automotive head-up display according to claim 5, characterized in that: The backlash-eliminating spring sheet comprises a clamping sheet, and two elastic sheets connected to the clamping sheet and arranged in parallel and at intervals. The two elastic sheets are respectively located on both sides of the rotating part, and two surfaces of the elastic sheets are respectively in contact with the connecting part and the supporting plate.

7. The automotive head-up display according to claim 6, characterized in that: The clamping plate is provided with a plurality of mounting holes, and a corresponding limiting protrusion is provided on the side of the support plate away from the curved mirror. The limiting protrusions are distributed on both sides of the notch, and the limiting protrusions are embedded in the mounting holes.

8. The automotive head-up display according to claim 1, characterized in that: A buckle and an elastic member connected to the buckle are also provided on the side of the arc-shaped tooth block.

9. The automotive head-up display according to any one of claims 1 to 8, characterized in that: The fixing bracket also includes a connecting plate, which is located between the two supporting plates and connected to the supporting plates.

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