Ultra-thin polarizer convenient to install

Abstract

The utility model discloses an ultra-thin polarizer convenient to install, which comprises an installation base and an elastic swing support driving a lens to vibrate, a plurality of magnetic strips are distributed on the periphery of the lower portion of the swing support at intervals, and annular coils corresponding to the magnetic strips are arranged on the installation base. A limiting bracket for mounting a magnetic strip is arranged at the bottom of the swinging bracket; the magnetic strips are mounted at the bottom of the limiting bracket and are adjacently distributed on the periphery of the annular coil in parallel; a circuit board electrically connected with the annular coil is further arranged, the annular coil generates a magnetic field after being powered on, and the magnetic strip is driven to drive the lens to swing through the swing support; by optimizing the structures of the swinging bracket, the magnetic strip, the coil and the mounting base, the overall structure is compact, the overall thickness is reduced, the electromagnetic coil is thinner, and the occupied space is smaller; meanwhile, the matching among the components is more accurate; in the whole assembly process, the magnetic strip support secondary assembly and the coil base secondary assembly can be assembled firstly, then the two parts are assembled into a whole, and assembling is rapid, simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of projector equipment, in particular to an ultra-thin polarizing filter which is easy to install. Background Art

[0002] Polarizer, also known as polarizing filter, polarizing plate, polarizer, etc., can improve the contrast of the projected image, making black deeper and white brighter. This is because the polarizer can selectively allow light in a specific direction to pass through, thereby reducing light scattering and messy reflections. This selective passage of light in a specific direction makes the black part of the projected image purer and the white part brighter, thereby enhancing the contrast and clarity of the image. In recent years, projection technology has made significant improvements in resolution and brightness. With the increasing demand for high definition and high image quality, most projectors will be equipped with polarizers. As a core component in the projector equipment, the galvanometer plays a key role in improving the pixels of the projector.

[0003] The existing projector polarizers still have the following defects during application: 1. The overall structure is complex and the volume is large, which makes it difficult to meet the design requirements of product miniaturization; 2. The assembly operation is complicated, prone to positioning errors, and low assembly efficiency; 3. The assembly structure is not reasonable, resulting in interference with the magnetic stripe group after power is turned on, affecting the stability of the vibration.

[0004] Therefore, further research and development is needed to solve the problems existing in the prior art. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned problems, the purpose of the utility model is to provide an ultra-thin polarizer that is easy to install, by optimizing the structure of the swing bracket, magnetic strip, coil and mounting base, so that the overall structure is compact and stable and reliable.

[0006] One of the purposes of the utility model is achieved by the following technical solution:

[0007] An ultra-thin polarizing lens that is easy to install, comprising a mounting base, wherein an elastic swing bracket for driving the lens to vibrate is arranged on the mounting base, a light-through hole is arranged in the middle of the swing bracket, and the lens is limited in the light-through hole; a plurality of magnetic strips are arranged at intervals around the bottom of the swing bracket, and an annular coil corresponding to the magnetic strip is arranged on the mounting base; a limiting bracket for installing the magnetic strip is arranged at the bottom of the swing bracket; the magnetic strip is installed at the bottom of the limiting bracket and is adjacently and parallelly distributed on the periphery of the annular coil;

[0008] A circuit board electrically connected to the annular coil is also provided on the mounting base. When the annular coil is energized, a magnetic field is generated to drive the magnetic strip to swing the lens through the swing bracket.

[0009] Furthermore, an annular boss matched with the inner diameter of the annular coil is provided on the mounting base, and the annular coil is sleeved on the annular boss.

[0010] Furthermore, first limiting strips are bent downwards around the outer edges of the bottom of the limiting bracket, and the four magnetic strips are respectively fixed on the inner sides of the corresponding first limiting strips.

[0011] Furthermore, second limiting strips are bent downwards around the inner edge of the limiting bracket, and four of the second limiting strips surround and form a mounting cavity adapted to the lens, and the lens is embedded and fixed in the mounting cavity.

[0012] Furthermore, a mounting plate for mounting the swing bracket on the mounting base is provided at the end of the swing bracket, and two mounting plates are arranged at opposite corners of the swing bracket; the swing bracket is connected to the mounting plates via two elastic arms.

[0013] Furthermore, the width of the elastic arm gradually increases toward the direction approaching the mounting plate.

[0014] Furthermore, mounting platforms corresponding to the mounting pieces are respectively provided on the mounting bases, and the cross-sectional shape of the mounting platforms is the same as the cross-sectional shape of the mounting pieces.

[0015] Furthermore, the mounting base is provided with an escape opening corresponding to the magnetic strip, and the first limit strip and one end of the magnetic strip close to the mounting base extend into the escape opening.

[0016] Furthermore, the mounting plate is locked and connected to the mounting platform via a fastener.

[0017] Furthermore, the circuit board is an FPC circuit board.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The utility model optimizes the structure of the swing bracket, magnetic strip, coil and mounting base, making the overall structure compact, stable and reliable. The magnetic strip is connected to the lens through the swing bracket, and the magnetic field generated by the coil drives the magnetic strip to vibrate, making the swing of the lens more stable and improving the jitter stability; a limit bracket is set under the swing bracket to effectively support the lens and the magnetic strip, while strengthening the structural strength of the lens bracket, improving the actuation stability, and further improving the clarity and resolution of the image;

[0020] 2. An annular boss is designed on the mounting base, and the annular coil is sleeved on the annular boss, adjacent and parallel to the magnetic strip. This design facilitates the rapid assembly of the coil. The magnetic field generated when the coil is energized can accurately drive the magnetic strip, making the vibration relatively stable. Furthermore, the coil is directly sleeved on the mounting base, avoiding cumbersome assembly steps, simplifying the installation process, making the coordination between components more accurate, which is conducive to improving the stability and operability of the overall structure, and also reduces the error rate in the assembly process.

[0021] Specifically, the quick assembly steps of the utility model include firstly sleeve the annular coil on the annular boss of the mounting base to form a coil base sub-assembly; then fix the limit bracket to the bottom of the swing bracket by dispensing or welding, and respectively fix the magnetic strip and the lens to the first limit strip and the mounting cavity in turn to form a magnetic strip bracket sub-assembly; finally, the magnetic strip bracket sub-assembly is used as a whole to lock the mounting plate of the swing bracket to the mounting platform of the mounting base by fasteners, which is convenient to operate and simple in steps;

[0022] 3. In addition, the coil is directly mounted on the annular boss of the mounting base, making the entire structure more compact and occupying less space; and an avoidance opening is designed on the mounting base so that the magnetic strip and part of the limit bracket can be inserted therein, thereby further reducing the overall thickness, optimizing the heat dissipation effect, and improving the heat dissipation performance of the polarizer. The design is reasonable and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of an ultra-thin polarizer that is easy to install in a preferred embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the overall structure of an ultra-thin polarizer that is easy to install in a preferred embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the overall cross-sectional structure of an ultra-thin polarizer that is easy to install in a preferred embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the overall structure of a limiting bracket for an ultra-thin polarizing filter that is easy to install in a preferred embodiment of the utility model;

[0027] Figure 5 This is a schematic diagram of the overall structure of a swing bracket for an ultra-thin polarizer that is easy to install in a preferred embodiment of the utility model;

[0028] Figure 6 A schematic diagram of the assembly state of the coil and the mounting base of the ultra-thin polarizer that is easy to install in a preferred embodiment of the utility model;

[0029] Figure 7 This is a schematic diagram of the assembly state of the swing bracket, magnetic strip, and lens of the ultra-thin polarizer that is easy to install in the preferred embodiment of the utility model.

[0030] In the figure:

[0031] 1. Mounting base; 11. Annular boss; 12. Mounting platform; 13. Avoidance opening; 2. Lens; 3. Swing bracket; 31. Light hole; 32. Mounting sheet; 33. Elastic arm; 4. Magnetic strip; 5. Annular coil; 6. Limit bracket; 61. First limit strip; 62. Second limit strip; 63. Mounting cavity; 7. Circuit board; 8. Fastener. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The 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. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0033] In the description of the present invention, unless otherwise specified, the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. The term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. In addition, the "first" and "second" mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0034] like Figure 1-7As shown, the utility model provides an ultra-thin polarizing filter that is easy to install, including a mounting base 1, on which an elastic swing bracket 3 for driving a lens 2 to vibrate is disposed, a light-through hole 31 is disposed in the middle of the swing bracket 3, and the lens 2 is limited in the light-through hole 31; a plurality of magnetic strips 4 are arranged at intervals around the bottom of the swing bracket 3, and an annular coil 5 corresponding to the magnetic strip 4 is disposed on the mounting base 1; a limiting bracket 6 for mounting the magnetic strip 4 is disposed at the bottom of the swing bracket 3; the magnetic strip 4 is mounted at the bottom of the limiting bracket 6, and is adjacently and parallelly distributed on the outer periphery of the annular coil 5; specifically, the mounting An annular boss 11 matching the inner diameter of the annular coil 5 is provided on the base 1, and the annular coil 5 is sleeved on the annular boss 11; an annular boss is designed on the mounting base, and the annular coil is sleeved on the annular boss, adjacent and parallel to the magnetic strip, so that the design can facilitate the rapid assembly of the coil, and the magnetic field generated when the coil is energized can accurately drive the magnetic strip, so that the vibration is relatively stable; further, the coil is directly sleeved on the mounting base, which avoids cumbersome assembly steps, simplifies the installation process, makes the coordination between components more accurate, is conducive to the improvement of the stability and operability of the overall structure, and also reduces the error rate in the assembly process;

[0035] The mounting base 1 is also provided with a circuit board 7 electrically connected to the annular coil 5. When the annular coil 5 is energized, it generates a magnetic field, driving the magnetic strip 4 to swing the lens 2 through the swing bracket 3. Specifically, in this embodiment, the circuit board 7 is an FPC circuit board 7, and its structure, installation method, and working principle can all refer to the FPC circuit board 7 in the prior art.

[0036] It should be noted that, according to the basic principle of the polarizer, the mounting base, the swing bracket, the limit bracket, and the annular coil are all structures with a central light hole, which will not be described in detail.

[0037] In order to better fix the magnetic strip, it is further preferred that the outer edge of the bottom of the limit bracket 6 is bent downward to form a first limit strip 61, and the four magnetic strips 4 are fixed on the corresponding inner sides of the first limit strips 61. Further, the inner edge of the limit bracket 6 is bent downward to form a second limit strip 62, and the four second limit strips 62 are surrounded to form a mounting cavity 63 adapted to the lens 2, and the lens 2 is embedded and fixed in the mounting cavity 63. In this design, the magnetic strip is connected to the lens through the swing bracket, and the magnetic field generated by the coil drives the magnetic strip to vibrate, so that the swing of the lens is more stable and the jitter stability is improved; the limit bracket is set below the swing bracket to effectively support the lens and the magnetic strip, while strengthening the structural strength of the lens bracket, improving the actuation stability, and further improving the clarity and resolution of the image.

[0038] The utility model optimizes the structure of the swing bracket, magnetic strip, coil and mounting base, making the overall structure compact, stable and reliable. The magnetic strip is connected to the lens through the swing bracket, and the magnetic field generated by the coil drives the magnetic strip to vibrate, making the swing of the lens more stable and improving the jitter stability; a limit bracket is set under the swing bracket to effectively support the lens and the magnetic strip, while strengthening the structural strength of the lens bracket, improving the actuation stability, and further improving the clarity and resolution of the image;

[0039] Preferably, the end of the swing bracket 3 is provided with a mounting piece 32 for mounting the swing bracket 3 on the mounting base 1, and two mounting pieces 32 are arranged at the diagonal corners of the swing bracket 3; the swing bracket 3 is connected to the mounting piece 32 through two elastic arms 33. Being arranged at the diagonal corners of the swing bracket, the swing bracket is less difficult to swing and more stable. Furthermore, the width of the elastic arm 33 gradually increases in the direction approaching the mounting piece 32. In this embodiment, the elastic arm is integrally formed with the swing bracket, and the width gradually increases from the inside to the outside. With this design, on the one hand, the integrated design simplifies the structure and further improves the stability of the lens swing of the polarizer.

[0040] Preferably, the mounting base 1 is provided with mounting platforms 12 corresponding to the mounting pieces 32, and the cross-sectional shape of the mounting platforms 12 is the same as the cross-sectional shape of the mounting pieces 32. This is conducive to quick matching and alignment during the installation of the swing bracket, reducing installation errors and improving installation efficiency. Specifically, the mounting pieces 32 are locked and connected to the mounting platforms 12 by fasteners 8.

[0041] Preferably, the mounting base 1 is provided with an escape opening 13 corresponding to the magnetic strip 4 , and the first limiting strip 61 and an end of the magnetic strip 4 close to the mounting base 1 extend into the escape opening 13 .

[0042] In this embodiment, the coil is directly mounted on the annular boss of the mounting base, making the entire structure more concise and compact, and occupying less space; and an avoidance opening is designed on the mounting base so that parts of the magnetic strip and the limit bracket can be inserted therein, thereby further reducing the overall thickness, optimizing the heat dissipation effect, and improving the heat dissipation performance of the polarizer. The design is reasonable and practical.

[0043] The assembly process of the utility model is as follows:

[0044] 1) Sleeving the annular coil on the annular boss of the mounting base to form a coil base subassembly;

[0045] 2) Fix the limit bracket to the bottom of the swing bracket by dispensing or welding, and fix the magnetic strip and the lens to the first limit strip and the installation cavity respectively in turn to form a magnetic strip bracket sub-assembly;

[0046] 3) The magnetic stripe bracket sub-assembly completed in 2) is locked onto the mounting table of the mounting base by fasteners to the mounting plate of the swing bracket.

[0047] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An ultra-thin polarizing filter that is easy to install, characterized in that: It comprises a mounting base, the mounting base is provided with an elastic swing bracket for driving the lens to vibrate, a light-through hole is provided in the middle of the swing bracket, and the lens is limited in the light-through hole; a plurality of magnetic strips are arranged at intervals around the bottom of the swing bracket, and an annular coil corresponding to the magnetic strip is provided on the mounting base; a limit bracket for installing the magnetic strip is provided at the bottom of the swing bracket; the magnetic strip is installed at the bottom of the limit bracket and is adjacently and parallelly distributed on the periphery of the annular coil; A circuit board electrically connected to the annular coil is also provided on the mounting base. When the annular coil is energized, a magnetic field is generated to drive the magnetic strip to swing the lens through the swing bracket.

2. The ultra-thin polarizer that is easy to install as claimed in claim 1, characterized in that: The mounting base is provided with an annular boss matched with the inner diameter of the annular coil, and the annular coil is sleeved on the annular boss.

3. The ultra-thin polarizer that is easy to install as claimed in claim 2, characterized in that: The outer edges of the bottom of the limiting bracket are bent downward to form first limiting strips, and the four magnetic strips are respectively fixed on the inner sides of the corresponding first limiting strips.

4. The ultra-thin polarizer that is easy to install as claimed in claim 3, characterized in that: Second limiting strips are bent downwards around the inner edge of the limiting bracket, and four of the second limiting strips are arranged to surround and form a mounting cavity matched with the lens, and the lens is embedded and fixed in the mounting cavity.

5. The ultra-thin polarizer that is easy to install as claimed in claim 4, characterized in that: The end of the swing bracket is provided with a mounting piece for mounting the swing bracket on the mounting base, and two mounting pieces are arranged at opposite corners of the swing bracket; the swing bracket is connected to the mounting piece via two elastic arms.

6. The ultra-thin polarizer that is easy to install as claimed in claim 5, characterized in that: The width of the elastic arm gradually increases toward the direction approaching the mounting piece.

7. The ultra-thin polarizer that is easy to install as claimed in claim 5, characterized in that: The mounting bases are respectively provided with mounting platforms corresponding to the mounting pieces, and the cross-sectional shape of the mounting platforms is the same as the cross-sectional shape of the mounting pieces.

8. The ultra-thin polarizer that is easy to install as claimed in claim 5, characterized in that: The installation base is provided with an avoidance opening corresponding to the magnetic strip, and the first limit strip and one end of the magnetic strip close to the installation base extend into the avoidance opening.

9. The ultra-thin polarizer that is easy to install as claimed in claim 8, characterized in that: The mounting plate is locked and connected to the mounting platform via a fastener.

10. The ultra-thin polarizer that is easy to install as claimed in claim 8, characterized in that: The circuit board is an FPC circuit board.

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