Periscope adjusting device and projection equipment
By designing a periscope adjustment device and using a drive mechanism to rotate the arm, the reflection angle can be adjusted, which solves the problems of complex structure and high maintenance cost of vehicle-mounted projection equipment, and simplifies the equipment and reduces costs.
Patent Information
- Application Number
- CN202520699194.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-04-14
AI Technical Summary
Existing vehicle-mounted projection equipment is complex in structure, high in cost, large in size, occupies a lot of space, has serious coupling between components, and has high maintenance costs.
The periscope adjustment device uses a drive mechanism to rotate the arm, which in turn drives the swing arm and reflector to slide, thereby adjusting the reflection angle. Only one drive mechanism is needed, reducing component coupling and lowering maintenance costs.
It simplifies the equipment structure, reduces costs, decreases the number of parts, and lowers maintenance difficulty and costs.
Smart Images
Figure CN223977431U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of projection technology, specifically to a periscope adjustment device and projection equipment. Background Technology
[0002] Projection equipment is widely used in the automotive field. Current automotive projection equipment has a complex structure and high cost. It requires multiple drive motors, resulting in a large overall size and occupying significant interior space. Furthermore, the various components are not decoupled, demanding high precision in component manufacturing. If any component fails, the entire system must be replaced, leading to high maintenance costs. Utility Model Content
[0003] This application provides a periscope adjustment device and a projection device to at least partially improve the above-mentioned technical problems.
[0004] The embodiments of this application are implemented through the following technical solutions.
[0005] In a first aspect, embodiments of this application provide a periscope adjustment device, including a bracket, a first reflector, an arm, a second reflector, a swing arm, and a driving device. The bracket is provided with a guide rail along a first direction, the first reflector is provided with a sliding shaft along a second direction, the sliding shaft is slidably mounted on the guide rail, one end of the arm is rotatably mounted on the bracket about the second direction, and the other end is rotatably connected to the first reflector, the second reflector has a mounting shaft arranged along the second direction, the mounting shaft is rotatably mounted on the bracket, the swing arm is fixedly connected to the mounting shaft and is located on the rotation path of the arm, and the driving device is used to drive the arm to rotate, and during the rotation, drive the swing arm to rotate and the first reflector to slide out or slide into the guide rail.
[0006] In some embodiments, the arm includes a first rod and a second rod, the first rod being rotatably mounted to the bracket and the swing arm being located on the rotation path of the first rod, one end of the second rod being connected to the first rod and the other end being rotatably mounted to the first reflector.
[0007] In some embodiments, the second rod is rotatably mounted in the central region of the first reflector.
[0008] In some embodiments, the edge of the first reflector is provided with a notch, and when the first reflector is fully slid into the guide rail, the second rod is received within the notch.
[0009] In some embodiments, the notch has a bevel, and the second rod can be rotated to fit against the bevel.
[0010] In some embodiments, the periscope adjustment device further includes a reset member connected to the mounting shaft and / or the second reflector, and used to drive the second reflector to reset.
[0011] In some embodiments, the reset element is an elastic element, one end of which is connected to the bracket and the other end of which is connected to the mounting shaft.
[0012] In some embodiments, the bracket is provided with a limiting portion for limiting the rotation angle of the second reflector.
[0013] In some embodiments, the support includes a base plate and a U-shaped frame, the guide rail is disposed on the base plate, the U-shaped frame is connected to the base plate and forms an installation space, the second reflector is disposed within the installation space, and the swing arm and the boom are both rotatably disposed on the U-shaped frame.
[0014] Secondly, this application also provides a projection device, including an optical engine and the aforementioned periscope adjustment device, wherein the second reflector and the first reflector of the periscope adjustment device are used to reflect the image light outward.
[0015] The periscope adjustment device and projection equipment provided in this application embodiment drive an arm to rotate via a drive device, which can drive the first reflector to slide out or in from the guide rail. Simultaneously, during the arm rotation, the arm can drive a swing arm to rotate, thereby rotating the second reflector and changing its angle, thus opening or retracting the second reflector. The entire adjustment device requires only one drive device, resulting in fewer parts and lower cost. Furthermore, there is no coupling between the first and second reflectors, allowing for easy decoupling and lower maintenance costs. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of a projection device provided in an embodiment of this application.
[0018] Figure 2 This is a schematic diagram of the installation structure of the optical engine and periscope adjustment device in a projection device provided in an embodiment of this application.
[0019] Figure 3 This is a schematic diagram of the structure of a support in a projection device provided in an embodiment of this application.
[0020] Figure 4 This is a schematic diagram of the connection structure of the first reflector and the arm in a projection device provided in an embodiment of this application.
[0021] Figure 5 This is a schematic diagram of the periscope adjustment device in a projection device provided in an embodiment of this application.
[0022] Figure 6 This is a state diagram of the periscope adjustment device in a projection device provided in the embodiments of this application in its initial state.
[0023] Figure 7 This is a state diagram of the periscope adjustment device in a projection device provided in an embodiment of this application during the opening process.
[0024] Figure 8 This is a diagram showing the state of a periscope adjustment device in a projection device after it is turned on, according to an embodiment of this application. Detailed Implementation
[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0026] Projection equipment is widely used in the automotive field. Current automotive projection equipment has a complex structure and high cost. It requires multiple drive motors, resulting in a large overall size and occupying significant interior space. Furthermore, the various components are not decoupled, demanding high precision in component manufacturing. If any component fails, the entire system must be replaced, leading to high maintenance costs.
[0027] Based on this, the inventors of this application propose a periscope adjustment device and a projection device to at least partially improve the above-mentioned technical problems. The present invention will be described in detail below with reference to specific embodiments.
[0028] Please refer to the following: Figure 1 and Figure 2 This embodiment provides a projection device 1, including an optical engine 10 and a periscope adjustment device 20. The optical engine 10 is used to modulate the emitted image light, and the periscope adjustment device 20 is located in the optical path of the image light and is used to change the propagation direction of the image light. In addition, the projection device 1 also includes a housing 11, and both the optical engine 10 and the periscope adjustment device 20 can be disposed inside the housing 11.
[0029] Specifically, the optical engine 10 can be an LCD optical engine, a DLP (Digital Light Processing) optical engine, an LCoS (Liquid Crystal on Silicon) optical engine, etc., and this embodiment does not limit it.
[0030] In this embodiment, please continue to refer to Figure 2 The periscope adjustment device 20 includes a bracket 30, a first reflector 40, an arm 50, a second reflector 70, a swing arm 60, and a drive device (not shown in the figure). The first reflector 40, the arm 50, the second reflector 70, the swing arm 60, and the drive device are all mounted on the bracket 30. The first reflector 40 and the second reflector 70 can form a periscope structure.
[0031] Specifically, please combine them together Figure 2 and Figure 3 The bracket 30 is provided with a guide rail 311 along a first direction X, which is used to mount and accommodate the first reflector 40. In this embodiment, the bracket 30 includes a base plate 31 and a U-shaped frame 32. The base plate 31 includes a first surface and a second surface facing away from each other. The guide rail 311 is disposed on the base plate 31, specifically located on one side of the first surface of the base plate 31. The first surface is provided with a first track and a second track, which are arranged opposite to each other to form the guide rail 311. The longitudinal cross-section of the first track and the second track is approximately U-shaped. One end of the guide rail 311 is open, so that the first reflector 40 can be disengaged from the opening when it is assembled in the guide rail 311.
[0032] The U-shaped frame 32 is connected to the base plate 31, and specifically to one side of the second surface of the base plate 31. The U-shaped frame 32 is generally U-shaped, forming an installation space 321 inside. The U-shaped frame 32 can protrude from one end of the base plate 31, in which case the base plate 31 will not interfere with the installation space 321.
[0033] In this embodiment, the first reflector 40 is generally configured as a rectangular structure. It is understood that in other embodiments, the first reflector 40 may also be of other shapes. Please refer to the following documents in this embodiment as well. Figure 3 and Figure 4The first reflector 40 is provided with a sliding shaft 41 along a second direction Y, where the first direction X can be approximately perpendicular to the second direction Y. The sliding shaft 41 can protrude from both sides of the first reflector 40 and is slidably fitted into the guide rail 311, allowing the first reflector 40 to slide along the first direction X. Specifically, the sliding shaft 41 is located at one end of the first reflector 40, on the side of the guide rail 311 away from the opening. When the first reflector 40 slides within the guide rail 311, the end of the first reflector 40 away from the sliding shaft 41 disengages from the opening. Under the influence of gravity, this end of the first reflector 40 can tilt, thereby changing its reflection angle.
[0034] One end of the arm 50 is rotatably mounted to the bracket 30 about the second direction Y, and the other end is rotatably connected to the first reflector 40. When the arm 50 rotates about the bracket 30, it can cause the first reflector 40 to slide. Specifically, in this embodiment, as... Figure 4 As shown, the arm 50 includes a first rod 51 and a second rod 52. The second rod 52 is longer than the first rod 51. The first rod 51 is rotatably mounted on the bracket 30. One end of the second rod 52 is connected to the first rod 51, and the first rod 51 and the second rod 52 are set at approximately 90°. The other end of the second rod 52 is rotatably mounted on the first reflector 40. When the first rod 51 rotates, the second rod 52 moves synchronously. At this time, the second rod 52 will cause the first reflector 40 to slide within the guide rail 311. In the process of sliding, the center of gravity of the first reflector 40 is changed, thereby changing the reflection angle of the first reflector 40.
[0035] To ensure that the first reflector 40 can adjust its reflection angle more conveniently, the second rod 52 can be rotatably mounted in the approximate middle area of the first reflector 40. The advantage of this arrangement is that the weights of the first reflector 40 on both sides of the rotation point between it and the second rod 52 are approximately equal. Therefore, when the first reflector 40 slides to the rotation point and disengages from the guide rail 311, it can change its reflection angle under the action of gravity. At this time, the second rod 52 exerts a pulling force on the first reflector 40 to support it. This arrangement structure is more stable.
[0036] When the first reflector 40 is retracted into the guide rail 311, the second rod 52 can remain coplanar with the first reflector 40. Simultaneously, the second rod 52 can also be retracted into the guide rail 311. To reduce volume, in some embodiments, the edge of the first reflector 40 is provided with a notch 42. When the first reflector 40 is fully slid into the guide rail 311, the second rod 52 is retracted into the notch 42. Furthermore, when the second rod 52 is retracted into the notch 42, its edge can remain flush with the edge of the first reflector 40. In this case, the second rod 52 can also be retracted into the guide rail 311.
[0037] In this embodiment, please refer to the following: Figure 2 and Figure 5 The second reflector 70 is generally configured as a rectangular structure; however, it is understood that in other embodiments, the second reflector 70 may also have other shapes. The second reflector 70 is rotatably mounted on the bracket 30 and specifically disposed within the mounting space 321 formed by the U-shaped frame 32. Specifically, the second reflector 70 has a mounting shaft 71 disposed along the second direction Y, protruding from both sides of the second reflector 70. The mounting shaft 71 is rotatably mounted on the bracket 30 and can pass through the U-shaped frame 32 of the bracket 30 for connection to the swing arm 60.
[0038] The swing arm 60 is fixedly connected to the mounting shaft 71. Specifically, the swing arm 60 is located outside the U-shaped frame 32, that is, outside the mounting space 321. The swing arm 60 is fixedly connected to the mounting shaft 71 extending out of the U-shaped frame 32 and can rotate synchronously with the mounting shaft 71. The swing arm 60 is located on the rotation path of the arm 50. That is, during the rotation of the arm 50, it will come into contact with the swing arm 60, thereby transmitting power to the swing arm 60, causing the swing arm 60 and the mounting shaft 71 to rotate around the axis of the mounting shaft 71, that is, around the second direction Y. During this process, the mounting shaft 71 drives the second reflector 70 to rotate and change its reflection angle.
[0039] Specifically, in this embodiment, the swing arm 60 is located on the rotation path of the first rod 51. That is, during the rotation of the arm 50, the first rod 51 will come into contact with the swing arm 60, thereby transmitting power to the swing arm 60. In some other embodiments, the swing arm 60 may also be located on the rotation path of the second rod 52.
[0040] The drive device is mounted on the bracket 30 and is connected to the arm 50 via a transmission connection. The drive device is used to drive the arm 50 to rotate. During the rotation of the arm 50, the swing arm 60 is driven to rotate, which in turn drives the mounting shaft 71 to rotate around the axis of the mounting shaft 71. During this process, the mounting shaft 71 drives the second reflector 70 to rotate, changing its reflection angle. Simultaneously, during the rotation of the arm 50, the arm 50 drives the first reflector 40 to slide out of or into the guide rail 311. It is understood that the drive device can be a motor, cylinder, etc., and this embodiment does not limit it.
[0041] The working principle of the periscope adjustment device 20 provided in this embodiment is as follows:
[0042] In the initial state, such as Figure 6 As shown, the first reflector 40 is housed within the track. Simultaneously, the second rod 52 is also housed within the track. The first rod 51 is disengaged from the swing arm 60, and the second reflector 70 is in its initial position. When it is necessary to control the first reflector 40 and the second reflector 70 to adjust the reflection angle, refer to... Figure 7 The control drive device is activated, at which point it drives the first rod 51 to rotate relative to the bracket 30, simultaneously causing the second rod 52 to rotate. During the rotation of the second rod 52, the first reflector 40 slides off the guide rail 311. When the first reflector 40 slides until its center of gravity slides off the guide rail 311, the first reflector 40 will tilt. At this point, because the rotation radius of the second rod 52 is larger, the second rod 52 will exert a pulling force on the first reflector 40, keeping the first reflector 40 balanced. As the drive device continues to rotate, the tilt angle of the first reflector 40 continues to increase.
[0043] During this process, the first rod 51 will come into contact with the pendulum 60, thereby driving the pendulum 60 to rotate, which in turn drives the second reflector 70 to rotate, causing the reflection angle of the second reflector 70 to change. This achieves the purpose of adjusting the reflection angle of the first reflector 40 and the second reflector 70. The first reflector 40 and the second reflector 70 can form a periscope structure to change the emission path of the image light emitted from the optomechanical 10.
[0044] During this process, the second reflector 70 and the first reflector 40 of the periscope adjustment device 20 are used to reflect the image light outward. Specifically, in this embodiment, the second reflector 70 can be adjusted to be located in the optical path of the image light emitted from the optical engine 10, and can reflect the image light towards the first reflector 40, while the first reflector 40 can reflect the image light reflected by the second reflector 70 outward. In some other embodiments, the first reflector 40 may also be adjusted to be located in the optical path of the image light emitted from the optical engine 10, and can reflect the image light towards the second reflector 70, while the second reflector 70 can reflect the image light reflected by the first reflector 40 outward; this embodiment does not limit this.
[0045] During this process, since the rotation of the second reflector 70 is driven by the contact between the first rod 51 and the swing rod 60, the rotation path of the swing rod 60 is unrestricted. This could lead to the swing rod 60 disengaging from the first rod 51 due to inertia, potentially causing the reflection angle of the second reflector 70 to be excessively large during rotation. Therefore, to prevent the second reflector 70 from rotating at an excessively large angle, the bracket 30 is also provided with a limiting part 33, which limits the rotation angle of the second reflector 70. Specifically, the limiting part 33 is located on the U-shaped frame 32 of the bracket 30 within the installation space 321, and is positioned on the rotation path of the second reflector 70. When the second reflector 70 rotates to its maximum angle, such as... Figure 8 As shown, the second reflector 70 contacts and abuts against the limiting part 33, restricting the second reflector 70 from continuing to rotate. It can be understood that the position of the limiting part 33 can be adjusted according to design needs, thereby controlling the maximum rotation angle of the second reflector 70. The maximum rotation angle of the second reflector 70 refers to the rotation angle of the second reflector 70 from its initial state to when it contacts the limiting part 33.
[0046] Meanwhile, in order to limit the maximum rotation angle of the first reflector 40, please refer again to this embodiment. Figure 4 The notch 42 has an inclined surface 43, the inclination angle of which is the same as the maximum rotation angle of the first reflector 40. During the rotation process, the second rod 52 can rotate to fit against the inclined surface 43. At this time, since the second rod 52 cannot continue to rotate relative to the first reflector 40, the second rod 52 forms a limiting effect on the rotation process of the first reflector 40.
[0047] It is understood that in some embodiments, the maximum rotation angle of the first reflector 40 and the maximum rotation angle of the second reflector 70 can be configured to be equal, and the first reflector 40 and the second reflector 70 can rotate to be parallel to each other during rotation. In other embodiments, the maximum rotation angle of the first reflector 40 and the maximum rotation angle of the second reflector 70 may not be equal, and this embodiment does not limit this.
[0048] When it is necessary to retract the first reflector 40 and the second reflector 70, the control drive device rotates in the opposite direction, causing the first rod 51 to rotate in the opposite direction, which in turn causes the second rod 52 to drive the first reflector 40 back into the guide rail 311, at which point it returns to its original position. Figure 6 The state is shown. When the first rod 51 rotates in the reverse direction, the driving force on the pendulum 60 disappears, and at this time, the second reflector 70 reverses and returns to its initial position under its own gravity. In some embodiments, please refer again to Figure 5 The periscope adjustment device 20 further includes a reset member 72, which is connected to the mounting shaft 71 and / or the second reflector 70 and is used to drive the second reflector 70 to reset. Resetting means that the second reflector 70 returns to its initial position from the maximum rotation angle.
[0049] Specifically, in this embodiment, the reset member 72 is an elastic element, such as a spring. One end of the elastic element is connected to the bracket 30, and the other end is connected to the mounting shaft 71. The number of reset members 72 can be one or more, and this embodiment does not limit this. In other embodiments, the reset member 72 can also be a torsion spring, etc., and this embodiment does not limit this as well.
[0050] By setting the reset component 72, when the drive device drives the arm 50 to rotate and drives the swing arm 60 to rotate, the elastic component deforms. When the drive device reverses, the force of the arm 50 on the swing arm 60 disappears, and the elastic component recovers its deformation. It can automatically drive the second reflector 70 to complete the reset, and the reset position of the second reflector 70 can be precisely controlled.
[0051] The periscope adjustment device 20 and projection device 1 provided in this application embodiment drive the arm 50 to rotate via a drive device, which can drive the first reflector 40 to slide out or in from the guide rail 311. Simultaneously, during the rotation of the arm 50, the arm 50 can drive the swing arm 60 to rotate, thereby causing the second reflector 70 to rotate, changing the angle of the second reflector 70, and realizing the opening or retraction of the second reflector 70. The entire periscope adjustment device 20 only requires one drive device, with fewer parts and lower cost. Furthermore, there is no coupling between the first reflector 40 and the second reflector 70, which can be easily decoupled, resulting in lower maintenance costs.
[0052] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model, and should all be included within the protection scope of this utility model.
Claims
1. A periscope adjustment device, characterized by, The periscope adjusting device comprises: a support provided with a guide rail along a first direction; a first reflecting element provided with a sliding shaft along a second direction, the sliding shaft being slidingly assembled in the guide rail; an arm lever, one end of which is rotationally assembled in the support along the second direction, and the other end of which is rotationally connected to the first reflecting element, a second reflecting element provided with a mounting shaft along the second direction, the mounting shaft being rotationally assembled in the support; a swing lever, which is fixedly connected to the mounting shaft and located in the rotation path of the arm lever; and a driving device for driving the arm lever to rotate, and in the process of rotation, driving the swing lever to rotate and the first reflecting element to slide out of or into the guide rail. The arm lever comprises a first lever body and a second lever body, the first lever body being rotationally assembled in the support, and the swing lever being located in the rotation path of the first lever body, and one end of the second lever body being connected to the first lever body, and the other end being rotationally assembled in the first reflecting element.
2. The periscope adjustment device of claim 1, wherein The second lever body is rotationally assembled in the middle region of the first reflecting element.
3. The periscope adjustment device of claim 2, wherein, An edge of the first reflecting element is provided with a notch, and when the first reflecting element is completely slid into the guide rail, the second lever body is accommodated in the notch.
4. The periscope adjustment device of claim 2, wherein, The notch has a slope, and the second lever body can be rotated to be in contact with the slope.
5. The periscope adjustment device of claim 4, wherein, The periscope adjusting device further comprises a reset member connected to the mounting shaft and / or the second reflecting element, and used for driving the second reflecting element to reset.
6. The periscope adjustment device of claim 1, wherein, The reset member is an elastic member, one end of which is connected to the support, and the other end of which is connected to the mounting shaft.
7. The periscope adjustment device of claim 6, wherein, The support is provided with a limiting portion for limiting the rotation angle of the second reflecting element.
8. The periscope adjustment device of claim 1, wherein, The support comprises a bottom plate and a U-shaped frame, the guide rail being arranged in the bottom plate, the U-shaped frame being connected to the bottom plate and forming a mounting space, the second reflecting element being arranged in the mounting space, and the swing lever and the arm lever being rotationally arranged in the U-shaped frame.
9. Periscope adjustment device according to any of claims 1-8, characterized in that The periscope adjusting device comprises:
10. A projection apparatus, characterized by, an optical engine for emitting image light; and the second reflecting element and the first reflecting element of the periscope adjusting device according to any one of claims 1-9 are used for reflecting the image light outward.