WO2020143435A1 - 镜头支架及投影机 - Google Patents

镜头支架及投影机 Download PDF

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Publication number
WO2020143435A1
WO2020143435A1 PCT/CN2019/127265 CN2019127265W WO2020143435A1 WO 2020143435 A1 WO2020143435 A1 WO 2020143435A1 CN 2019127265 W CN2019127265 W CN 2019127265W WO 2020143435 A1 WO2020143435 A1 WO 2020143435A1
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WIPO (PCT)
Prior art keywords
lens
radial
axial
elastic
projector
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/127265
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English (en)
French (fr)
Inventor
孟金奎
张翔
王云
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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Publication date
Application filed by Appotronics Corp Ltd filed Critical Appotronics Corp Ltd
Publication of WO2020143435A1 publication Critical patent/WO2020143435A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details

Definitions

  • the utility model relates to the technical field of projection, in particular to a lens holder and a projector.
  • the utility model provides a lens bracket, which can be firmly clamped with a projector lens with a large error in the axial direction or the radial direction, and has a wide application range.
  • the utility model provides a projector including the above lens bracket, which is suitable for a projector lens with a certain size error in the axial direction and the radial direction, which is convenient for replacing the projector lens and improving the service life of the projector.
  • the utility model achieves the above object through the following technical solutions.
  • a lens bracket includes a lens fixture, a radial elastic sheet component and an axial elastic sheet component.
  • the lens fixture is engaged with the projector lens and is provided with radial grooves and axial grooves.
  • the radial shrapnel assembly is disposed in the radial groove and elastically abuts the projector lens.
  • the axial dome assembly is disposed in the axial groove and elastically abuts the projector lens.
  • a projector includes the above lens bracket and the projector lens, and the lens bracket is clipped to the projector lens.
  • the lens bracket and the projector provided by the utility model are provided with a radial shrapnel assembly and an axial shrapnel assembly to enable the projector lens and the lens bracket to be snap-fitted in an elastic abutment manner, so that the lens bracket can be accommodated in the axial and radial directions
  • the projector lens with a certain size error has a wide range of application. It prevents the lens from shaking in the radial or axial direction and affects the stability of the image. It ensures that the projector lens is firmly installed in the lens holder to improve the projection effect and the customer experience is better.
  • the projector provided by the utility model uses the above lens bracket to improve the adaptability of the projector to the projector lens. In the case of a damaged projector lens, it is convenient to replace the new projector lens, and the new projector lens allows There are certain dimensional errors that extend the life of the projector.
  • FIG. 1 is a schematic structural diagram of a lens holder provided in a first embodiment of the present invention and a lens of a projector.
  • FIG. 2 is a schematic diagram of the structure of the projector lens provided by the first embodiment of the present invention.
  • FIG 3 is a schematic structural view of a lens holder provided by the first embodiment of the present invention.
  • FIG. 4 is an enlarged view at IV in FIG. 3.
  • FIG. 5 is a schematic structural view of the radial dome assembly provided by the first embodiment of the present invention.
  • FIG. 6 is a schematic diagram of the assembly of the lens holder and the projector lens provided by the first embodiment of the present invention (for the sake of clarity, the radial shrapnel assembly and the axial shrapnel assembly have been separated from the lens holder and are in contact with the projector lens ).
  • Fig. 7 is an enlarged view at VII in Fig. 6.
  • Fig. 8 is an enlarged view at VIII in Fig. 3.
  • FIG. 9 is a schematic structural view of the axial elastic sheet assembly provided by the first embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a projector provided by a second embodiment of the present invention.
  • this embodiment provides a lens holder 100 for clamping a projector lens 40.
  • the projector lens 40 may have a multi-segment ring structure, including an assembly torus 41 and a claw 42, wherein the assembly torus 41 is coaxial with the optical axis of the projector lens 40, and the claw 42 and the assembly torus 41 One end is connected and protrudes out of the assembly ring surface 41 in the radial direction of the assembly ring surface 41.
  • the number of the claws 42 is 3, and the three claws 42 are arranged at equal intervals.
  • the number of the claws 42 can also be other numbers, such as 1, 2, 4, etc.
  • the lens holder 100 has a ring structure, and has an axis A1 and a radial direction.
  • the lens holder 100 includes a lens fixture 10, a radial dome assembly 20 and an axial dome assembly 30.
  • the lens fixture 10 includes a plurality of lens clips 17, in this embodiment, the lens holder 100 includes three lens clips 17, and the three lens clips 17 are arranged at equal intervals along the inner annular surface 16 of the lens holder 100, so that the lens All parts of the bracket 100 are evenly stressed.
  • the lens holder 100 may also include 2, 4, 5, etc. lens clips 17, and the lens clips 17 may also be distributed at different intervals along the inner annular surface 16 of the lens holder 100.
  • the lens holder 17 may be a boss structure protruding from the inner ring surface 16 of the lens holder 100 toward the center of the lens holder 100.
  • the lens fixture 10 includes a curved mating surface 11, a flat mating surface 12 and an end surface 13, and is provided with a radial groove 14 and an axial groove 15, wherein the normal of the curved surface mating surface 11 and the diameter of the lens holder 100 To coincide, the radial groove 14 is provided on the arc-shaped mating surface 11; the plane mating surface 12 is opposite to the end surface 13, the plane mating surface 12 is perpendicular to the axis A1, and the axial groove 15 is disposed on the plane mating surface 12.
  • the diameter of the assembly ring surface 41 is D1
  • the diameter of the arc surface matching surface 11 is D2, where D2-D1>0, that is, the diameter of the arc surface matching surface 11 is larger than the diameter of the assembly ring surface 41, to ensure
  • the projector lens 40 can be snapped into the lens holder 100.
  • the lens holder 100 can accommodate a diameter error of 0.05mm-0.8mm, preferably 0.1mm-0.5mm
  • the scope of the projector lens 40 and the lens holder 100 is wide.
  • the plane mating surface 12 and the end surface 13 are parallel, and the distance between the plane mating surface 12 and the end surface 13 in the A1 direction is W2, which is equivalent to the thickness of the lens clip 17, and with reference to FIG. 2, the ring width of the assembly torus is W1 , Where W1-W2>0, W1 is greater than W2, to ensure that the projector lens 40 can be snapped into the lens holder 100, in this embodiment, 0.8mm> W1-W2> 0.02mm, the lens holder 100 can accommodate axial errors in The projector lens 40 in the range of 0.02mm-0.8mm, preferably 0.05mm-0.5mm, and the lens bracket 100 has a wide range of applications.
  • each lens holder 17 has one radial groove 14 and one axial groove 15.
  • the lens holder 17 may also be provided with only radial grooves 14 or axial grooves 15, wherein the number of radial grooves 14 and axial grooves 15 may be multiple, The number of radial grooves 14 and axial grooves 15 may be the same or different.
  • each lens holder 17 may also be provided with a plurality of radial grooves 14 and axial grooves 15 at the same time, and the plurality of radial grooves 14 and the plurality of axial grooves 15 are on the arc surface mating surface 11
  • the surface of the planar mating surface 12 may be arranged at equal intervals or at non-equal intervals.
  • the radial shrapnel assembly 20 is disposed in the radial groove 14.
  • the radial shrapnel assembly 20 can be a plurality of and are all disposed on the arc-shaped mating surface 11.
  • the lens clip 17 is provided with a plurality of diameters In the embodiment of the groove 14, when there are a plurality of radial shrapnel assemblies 20, the clamping force of the lens clamp 17 to the projector lens 40 in the radial direction can be improved, and the stability of the projector lens 40 can be further improved.
  • the plurality of radial shrapnel assemblies 20 may be arranged at equal intervals or non-equidistant intervals on the surface of the arc-shaped mating surface 11.
  • the radial dome assembly 20 includes a radial dome 21 and a first fastener 22, where the first fastener 22 connects the radial dome 21 and the radial groove groove bottom 141.
  • the radial elastic plate assembly 20 may further include a first elastic element 23, which is located between the radial elastic plate 21 and the radial groove groove bottom 141, and the first elastic element may be a spring or other elastic components.
  • the first fastener 22 is a screw. In other embodiments, the first fastener 22 may also be a rivet, a pin, or the like.
  • the radial shrapnel 21 includes a first shrapnel region 211, a second shrapnel region 212 and a third shrapnel region 213.
  • the first shrapnel region 211 and the third shrapnel region 213 are located at two ends of the second shrapnel region 212 respectively The region 212 is connected.
  • the first shrapnel region 211 and the third shrapnel region 213 are located at both ends of the second shrapnel region 212 and connected to the second shrapnel region 212, respectively.
  • the first fastener 22 is bent and connected, the first elastic piece area 211 is provided with an opening to allow the first fastener 22 to pass through, and the second elastic piece area 212 and the third elastic piece area 213 are connected to the first elastic element 23, that is, the first An elastic element is disposed between the second elastic region 212 and the third elastic region 213.
  • the third elastic region 213 may also be connected to the first elastic element 23 alone, and the second elastic region 212 may also be connected to the first elastic element 23 alone.
  • the radial shrapnel 21 may be plastic, metal, etc., and has a certain elasticity.
  • the first shrapnel region 211 generally includes a trapezoidal surface
  • the second shrapnel region 212 includes a generally pentagonal surface
  • the third shrapnel region 213 includes a generally triangular surface.
  • the first shrapnel region 211, the second shrapnel region 212, and the third shrapnel region 213 may also include surfaces of other shapes, such as rectangles, pentagons, and the like.
  • the first shrapnel region 211 and the second shrapnel region 212 are bent and connected, that is, the first shrapnel region 211 and the second shrapnel region 212 are not on the same surface.
  • the second shrapnel region 212 and the third shrapnel region 213 are not on the same surface.
  • the second shrapnel region 212 is inclined relative to the arc surface where the arc-shaped mating surface 11 is located, and the end 2121 of the second shrapnel region 212 protrudes from the arc-shaped mating surface 11, specifically, at least a part of the second shrapnel region 212 (including or surrounding A part of the end portion 2121 protrudes from the arc-shaped mating surface 11.
  • the protruding portion is an end portion 2121.
  • the distance between the end portion 2121 and the arc-shaped mating surface 11 in the radial direction is 0.1 mm
  • the distance between the end 2121 and the axis A1 is D3, (D2-2D3)-(D2-D1)>0, that is, the distance between the end 2121 of the second shrapnel region 212 and the axis A1 is twice the distance D3 and the arc surface matching surface
  • the difference between the diameter D2 of 11 is greater than the difference between the diameter D2 of the arc-shaped mating surface 11 and the diameter D1 of the assembly ring surface 41.
  • the assembly ring surface 41 compresses the first The elastic element 23, the first elastic element 23 gives a certain restoring force to the projector lens 40, and the direction of the restoring force is along the radial direction of the lens holder 100, the projector lens 40 and the lens holder 100 can be firmly clamped to avoid the projector The lens 40 shakes in the radial direction of the lens holder 100.
  • 0.5 mm>(D2-2D3)-(D2-D1)>0.05 mm that is, the distance D3 between the end 2121 of the second shrapnel region 212 and the axis A1 is twice as large as the arc surface
  • the difference between the diameter D2 of the surface 11 (D2-2D3) is greater than the difference between the diameter D2 of the mating surface 11 and the diameter D1 of the assembly ring surface 41 (D2-D1), and the difference between the two (D2-2D3) )-(D2-D1) is 0.05mm-0.5mm, not only can ensure that the assembly torus 41 compresses the first elastic element 23 and can make the first elastic element 23 in a proper compression state, and is conducive to improving the first elastic element 23 lifespan.
  • the first shrapnel region 211 and the third shrapnel region 213 are recessed relative to the arc-shaped mating surface 11, and the top surface of the first fastener 22 connected to the first shrapnel region 211 is lower than the arc
  • the surface matching surface 11 is convenient for clamping the projector lens 40 with the lens holder 100 along the assembly direction A2.
  • the inclination of the third shrapnel region 213 relative to the radial groove bottom 141 is convenient for the projector lens 40 to be engaged with the lens holder 100 along the third shrapnel region 213.
  • the radial elastic piece 21 abuts on the assembly torus 41.
  • the second elastic piece region 212 and the assembly ring surface 41 are elastically abutted, that is, the end portion 2121 of the second elastic piece region 212 abuts the assembly ring surface 41.
  • the axial elastic plate assembly 30 is disposed in the axial groove 15, the axial elastic plate assembly 30 includes the axial elastic plate 31, the second fastener 32 and the second elastic element 33, the second The elastic element 33 is located between the axial elastic piece 31 and the axial groove groove bottom 151, the second fastener 32 connects the axial elastic piece 31 and the axial groove groove bottom 151, the second elastic element may be a spring or other elastic components .
  • the axial elastic plate assembly 30 may further include a second elastic element 33, and the second elastic element 33 is located between the axial elastic plate 31 and the axial groove bottom 151.
  • the second fastener 32 is a screw. In other embodiments, the second fastener 32 may also be a rivet, a pin, or the like.
  • the axial shrapnel assembly 30 may be plural.
  • the lens clamping member 17 is provided with a plurality of axial grooves 15 to improve the clamping force of the lens clamping member 17 on the projector lens 40 in the direction of the axis A1 and further improve The stability of the projector lens 40.
  • the plurality of axial dome assemblies 30 may be arranged at equal intervals or non-equidistant intervals on the surface of the planar mating surface 12, correspondingly, the axial grooves 15 are arranged at equal intervals or non-equidistant intervals, so that the projector lens 40 and the lens card The clamping claw 42 contacted by the piece 17 is evenly stressed, which can further improve the stability of the clamping of the projector lens 40 in the axial direction.
  • the axial shrapnel 31 includes a fourth shrapnel region 311, a fifth shrapnel region 312 and a sixth shrapnel region 313.
  • the fourth shrapnel region 311 and the sixth shrapnel region 313 are located at both ends of the fifth shrapnel region 312 and respectively It is connected to the fifth shrapnel region 312.
  • the fourth shrapnel region 311 and the sixth shrapnel region 313 are located at both ends of the fifth shrapnel region 312 and connected to the fifth shrapnel region 312 at a certain angle,
  • the fourth shrapnel region 311, the fifth shrapnel region 312, and the sixth shrapnel region 313 are not coplanar.
  • the second fastener 32 is connected to the fourth spring region 311.
  • the fourth spring region 311 is provided with an opening for the second fastener 32 to pass through.
  • the second elastic element 33 is connected to the sixth elastic piece region 313.
  • the axial shrapnel 31 may be plastic, metal, etc., and has a certain elasticity.
  • the axial shrapnel 31 includes a fourth shrapnel region 311, a fifth shrapnel region 312, and a sixth shrapnel region 313.
  • the fifth shrapnel region 312 and the fourth shrapnel region 311 And the sixth shrapnel area 313 is connected at an angle.
  • the fourth shrapnel region 311, the fifth shrapnel region 312, and the sixth shrapnel region 313 include rectangular surfaces.
  • the fourth shrapnel region 311, the fifth shrapnel region 312, and the sixth shrapnel region 313 may also include surfaces of other shapes, such as trapezoids, pentagons, and the like.
  • the fifth shrapnel region 312 is inclined relative to the plane where the planar mating surface 12 is located.
  • the sixth shrapnel region 313 has a certain length and width.
  • the distance between the fourth elastic region 311 and the end surface 13 is smaller than the distance between the planar mating surface 12 and the end surface 13, and the distance between the sixth elastic region 313 and the end surface 13 is greater than the distance between the planar mating surface 12 and the end surface 13,
  • the top surface of the second fastener 32 provided in the fourth shrapnel area 311 is lower than the planar mating surface 12, which facilitates the rotation of the projector lens 40 in the A3 direction when the projector lens 40 is engaged with the lens holder 100.
  • the claw 42 rotates from the planar mating surface 12 through the fourth elastic piece area 311 and the fifth elastic piece area 312 to the sixth elastic piece area 313.
  • the distance between the sixth shrapnel region 313 and the planar mating surface 12 along the axis A1 direction is 0.2 mm.
  • the distance between the sixth shrapnel region 313 and the end surface 13 is W3, specifically, (W3-W2)-(W1-W2)>0, that is, the distance W3 between the sixth shrapnel region 313 and the end surface 13
  • the difference between the distance W2 of the plane mating surface 12 and the end surface 13 is greater than the difference of the ring width W1 of the assembly ring surface 41 and the distance W2 of the plane mating surface 12 and the end surface 13 to ensure that when the projector lens 40 is engaged with the lens holder 100 Afterwards, the claw 42 compresses the second elastic element 33, and the second elastic element 33 gives the projector lens 40 a certain restoring force.
  • the restoring force is along the axis A1, that is, when the distance W3 between the sixth spring region 313 and the end surface 13 is equal to
  • the difference between the distance W2 between the plane mating surface 12 and the end surface 13 is greater than the difference between the ring width W1 of the assembly ring surface 41 and the distance W2 between the plane mating surface 12 and the end surface 13, the projector lens 40 and the lens holder 100 can be fastened Then, the projector lens 40 is prevented from shaking in the direction of the axis A1 of the lens holder 100.
  • the difference between W2 (W3-W2) is greater than the difference between the ring width W1 of the assembly ring 41 and the distance W2 between the planar mating surface 12 and the end surface 13 (W1-W2), and the difference between the two (W3-W2) -When (W1-W2) is 0.05mm-1.5mm, it can not only ensure that the claw 42 compresses the second elastic element 33 but also can put the second elastic element 33 in a proper compressed state, which is beneficial to improve the use of the second elastic element 33 life.
  • the axial elastic sheet 31 elastically abuts the jaw 42.
  • the sixth elastic sheet region 313 elastically abuts the jaw 42.
  • the sixth elastic sheet region 313 may be provided with two protrusions to enhance the engagement with the card The abutment effect of the claw 42.
  • the lens holder 100 elastically abuts the projector lens 40 through the radial shrapnel assembly 20 and the axial shrapnel assembly 30. Specifically, the lens holder 100 disposes the axial shrapnel assembly 30 in the axial direction
  • the groove and the radial shrapnel assembly 20 are provided in the radial groove to elastically abut the projector lens, which not only can effectively prevent the projector lens 40 from shaking along the axis A1 direction of the lens holder 100 and the radial direction, thereby improving the projection effect.
  • the lens holder 100 can be firmly engaged with the projector lens 40 with a large error in the axial or radial direction, and has a wide range of applications.
  • the lens holder 100 is suitable for various projections that have manufacturing errors at the matching position. ⁇ 40 ⁇ Machine lens 40.
  • this embodiment provides a projector 200.
  • the projector 200 includes a lens holder 100 and a projector lens 40 provided in the first embodiment.
  • the lens holder 100 is clipped to the projector lens 40.
  • the projector 200 improves the adaption range of the projector 200 to the projector lens 40 by adopting the lens holder 100 described above. In the case where the projector lens 40 is damaged, it is convenient to replace the new projector lens 40, and the new projector lens 40 allows There is a certain dimensional error that extends the life of the projector 200.

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Abstract

一种镜头支架（100），包括镜头卡具（10）、径向弹片组件（20）及轴向弹片组件（30），镜头卡具（10）与投影机镜头（40）卡接并设有径向凹槽（14）与轴向凹槽（15），径向弹片组件（20）设于径向凹槽（14）并与投影机镜头（40）的径向周缘弹性抵接，轴向弹片组件（30）设于轴向凹槽（15）并与投影机镜头（40）的轴向周缘弹性抵接。一种投影机（200），包括镜头支架（100）与投影机镜头（40），镜头支架（100）卡接于投影机镜头（40）。镜头支架（100）及投影机（200）通过径向弹片组件（20）及轴向弹片组件（30）与投影机镜头（40）弹性抵接，使得镜头支架（100）可以和轴向或径向上具有较大误差的投影机镜头（40）均能稳固卡接，适用范围广。

Description

镜头支架及投影机 技术领域
本实用新型涉及投影技术领域，具体而言，涉及一种镜头支架及投影机。
背景技术
投影机镜头与镜头支架装配时，投影机镜头的径向和轴向是否晃动决定了安装是否稳固，投影机镜头的径向和轴向是否晃动由镜头支架与投影机镜头装配后径向和轴向的间隙大小决定。目前市场上工程投影机镜头品牌繁多，型号各异，而同一型号的投影机镜头也往往存在着制造误差，即便对于标准尺寸的镜头支架与投影机镜头配合时，配合位置的径向和轴向都可能出现尺寸差导致投影机镜头装配不稳固影响投影效果。
实用新型内容
本实用新型提供了一种镜头支架，该镜头支架可以和轴向或径向上具有较大误差的投影机镜头均能稳固卡接，适用范围广。
本实用新型提供了一种投影机，包括上述镜头支架，适用于在轴向和径向上具有一定尺寸误差的投影机镜头，方便更换投影机镜头，提高投影机的使用寿命。
本实用新型通过以下技术方案来实现上述目的。
一种镜头支架，包括镜头卡具、径向弹片组件及轴向弹片组件。镜头卡具与投影机镜头卡接并设有径向凹槽与轴向凹槽。径向弹片组件设于径向凹槽并与投影机镜头弹性抵接。轴向弹片组件设于轴向凹槽并与投影机镜头弹性抵接。
一种投影机，包括上述镜头支架与投影机镜头，镜头支架卡接于投影机镜头。
本实用新型提供的镜头支架及投影机通过设置径向弹片组件及轴向弹片组件使投影机镜头与镜头支架以弹性抵接的方式进行卡接，使得镜头支架可以收容在轴向和径向上具有一定尺寸误差的投影机镜头，适用范围广，避免镜头在径向或轴向上晃动影响图像的稳定性，保证投影机镜头在镜头支架内稳固安装，提高投影效果，客户体验更好，除此之外，本实用新型提供的投影机采用上述镜头支架提高了投影机对投影机镜头的适配范围，在投影机镜头损坏情况下，方便更换新的投影机镜头，且新的投影机镜头允许存在一定的尺寸误差，延长投影机的使用寿命。
本实用新型的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本实用新型第一实施例提供的镜头支架与投影机镜头卡接的结构示意图。
图2是本实用新型第一实施例提供的投影机镜头的结构示意图。
图3是本实用新型第一实施例提供的镜头支架的结构示意图。
图4是图3中Ⅳ处的放大图。
图5是本实用新型第一实施例提供的径向弹片组件的结构示意图。
图6是本实用新型第一实施例提供的镜头支架与投影机镜头的装配示意图 图(为示意清楚已将径向弹片组件和轴向弹片组件自镜头支架分离，并和投影机镜头进行抵接)。
图7为图6中Ⅶ处的放大图。
图8是图3中Ⅷ处的放大图。
图9是本实用新型第一实施例提供的轴向弹片组件的结构示意图。
图10是本实用新型第二实施例提供的投影机的结构示意图。
具体实施方式
为了使本技术领域的人员更好地理解本实用新型方案，下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。
第一实施例
请参阅图1，本实施例提供一种镜头支架100，用于卡接投影机镜头40。
请参阅图2，投影机镜头40可以为多段环形结构，包括装配环面41及卡爪42，其中装配环面41与投影机镜头40的光轴共轴，卡爪42与装配环面41的一端连接并沿装配环面41的径向凸出于装配环面41，在本实施例中，卡爪42的数量为3，3个卡爪42等间距设置。卡爪42的数量还可以是其他数字，例如1个、2个、4个……等。
请参阅图3，镜头支架100为环形结构，具有轴线A1及径向。镜头支架100包括镜头卡具10、径向弹片组件20以及轴向弹片组件30。
镜头卡具10包括多个镜头卡件17，在本实施例中，镜头支架100包括3个 镜头卡件17，3个镜头卡件17沿镜头支架100的内环面16等间距设置，使镜头支架100各个部分受力均匀。在本实用新型的其他实施方式中，镜头支架100也可以包括2个、4个、5个等镜头卡件17，镜头卡件17沿镜头支架100的内环面16也可以不等间距分布。
镜头卡件17可以为沿从镜头支架100的内环面16向镜头支架100的圆心方向凸出的凸台结构。镜头卡具10包括弧面配合面11、平面配合面12和端面13，并设有径向凹槽14及轴向凹槽15，其中，弧面配合面11的法线与镜头支架100的径向重合，径向凹槽14设于弧面配合面11；平面配合面12与端面13相背，平面配合面12垂直于轴线A1，轴向凹槽15设于平面配合面12。
参阅图2及图3，装配环面41的直径为D1，弧面配合面11的直径为D2，其中D2-D1＞0，即弧面配合面11的直径大于装配环面41的直径，保证投影机镜头40可以卡接进镜头支架100，本实施例中，0.8mm＞D2-D1＞0.05mm，镜头支架100可以收容直径误差在0.05mm-0.8mm,优选为0.1mm-0.5mm范围内的投影机镜头40，镜头支架100的适用范围广。
参阅图3，平面配合面12和端面13平行，平面配合面12与端面13沿A1方向的间距为W2，等效于镜头卡件17的厚度，结合图2，装配环面的环宽为W1，其中，W1-W2＞0，W1大于W2，保证投影机镜头40可以卡接进镜头支架100，本实施例中，0.8mm＞W1-W2＞0.02mm，镜头支架100可以收容轴向误差在0.02mm-0.8mm，优选为0.05mm-0.5mm范围内的投影机镜头40，镜头支架100的适用范围广。
在本实施例中，每个镜头卡件17有1个径向凹槽14和1个轴向凹槽15。在本实用新型的其他实施方式中，镜头卡件17也可以仅设置径向凹槽14或轴向凹槽15，其中，径向凹槽14与轴向凹槽15的数量可以为多个，径向凹槽14 与轴向凹槽15的数量可以相同也可以不同。可以理解的是，每个镜头卡件17也可以同时设置多个径向凹槽14与轴向凹槽15，多个径向凹槽14与多个轴向凹槽15在弧面配合面11及平面配合面12表面可以等间距设置，也可以非等间距设置。
参阅图3及图4，径向弹片组件20设于径向凹槽14内，径向弹片组件20可以为多个且均设于弧面配合面11，对应镜头卡件17设有多个径向凹槽14的实施方式，当径向弹片组件20为多个时，可以提高镜头卡件17在径向上对投影机镜头40的卡接力，进一步提高投影机镜头40的稳固程度。多个径向弹片组件20可以在弧面配合面11的表面等间距设置也可以非等间距设置。当多个径向弹片组件20等间距设于弧面配合面11时，投影机镜头40与镜头卡件17接触的装配环面41部分受力均匀，可以进一步提高投影机镜头40在径向上卡接的稳固性。
参阅图4及图5，径向弹片组件20包括径向弹片21、第一紧固件22，其中第一紧固件22连接径向弹片21与径向凹槽槽底141。
进一步的，径向弹片组件20还可以包括第一弹性元件23，第一弹性元件23位于径向弹片21与径向凹槽槽底141之间，第一弹性元件可以为弹簧或其他弹性部件。
在本实施例中，第一紧固件22为螺钉，在其他的实施方式中，第一紧固件22也可以为铆钉、销等。径向弹片21包括第一弹片区211、第二弹片区212和第三弹片区213，第一弹片区211与第三弹片区213分别位于第二弹片区212的两端并分别与第二弹片区212连接，具体地，在本实施例中，第一弹片区211与第三弹片区213分别位于第二弹片区212的两端并分别与第二弹片区212连接，第一弹片区211与第一紧固件22弯折连接，第一弹片区211设有开孔使得第一 紧固件22穿过，第二弹片区212和第三弹片区213与第一弹性元件23连接，即第一弹性元件设置在第二弹片区212与第三弹片区213之间。在本实用新型的其他实施方式中，第三弹片区213也可以单独与第一弹性元件23连接，第二弹片区212也可以单独与第一弹性元件23连接。
径向弹片21可以为塑料、金属等，具有一定的弹性。在本实施例中，第一弹片区211大致包括梯形表面，第二弹片区212包括大致为五边形的表面，第三弹片区213包括大致为三角形的表面。在本实用新型的其他实施方式中，第一弹片区211，第二弹片区212与第三弹片区213也可以包括其他形状的表面，如长方形，五边形等。第一弹片区211和第二弹片区212弯折连接，即第一弹片区211和第二弹片区212不在同一个表面。第二弹片区212和第三弹片区213不在一个表面上。
第二弹片区212相对弧面配合面11所在的弧面倾斜，第二弹片区212的端部2121凸出于弧面配合面11，具体地，第二弹片区212的至少一部分(包括或者围绕端部2121的一部分区域)凸出于弧面配合面11。
参阅图3，第二弹片区212的至少一部分凸出于弧面配合面11，该凸出部分为端部2121，例如，端部2121与弧形配合面11沿径向方向的距离为0.1mm，端部2121与轴线A1的距离为D3，(D2-2D3)-(D2-D1)＞0，即第二弹片区212的端部2121与轴线A1的距离D3的2倍与弧面配合面11的直径D2的差值大于弧面配合面11的直径D2与装配环面41的直径D1的差值，因此，当投影机镜头40与镜头支架100卡接后，装配环面41压缩第一弹性元件23，第一弹性元件23给予投影机镜头40以一定的回复力，且回复力的方向为沿镜头支架100的径向，投影机镜头40与镜头支架100可以稳固卡接，避免投影机镜头40沿镜头支架100的径向晃动。
具体地，在本实施例中，0.5mm＞(D2-2D3)-(D2-D1)＞0.05mm，即第二弹片区212的端部2121与轴线A1的距离D3的2倍与弧面配合面11的直径D2的差值(D2-2D3)大于弧面配合面11的直径D2与装配环面41的直径D1的差值(D2-D1)，且二者的差值范围(D2-2D3)-(D2-D1)为0.05mm-0.5mm时，不仅能保证装配环面41压缩第一弹性元件23且能使第一弹性元件23处于合适的压缩状态，且有利于提高第一弹性元件23的使用寿命。优选地，0.25mm＞(D2-2D3)-(D2-D1)＞0.05mm。
继续参阅图3及图4，第一弹片区211与第三弹片区213相对弧面配合面11凹进，并且连接在第一弹片区211的第一紧固件22的顶面要低于弧面配合面11，便于将投影机镜头40沿装配方向A2与镜头支架100进行卡接。第三弹片区213相对径向凹槽槽底141的倾斜设置，方便投影机镜头40沿第三弹片区213与镜头支架100卡接。
参阅图6及图7，径向弹片21与装配环面41抵接。具体地，第二弹片区212和装配环面41弹性抵接，即是第二弹片区212的端部2121与装配环面41抵接。
参阅图3、图8及图9，轴向弹片组件30设于轴向凹槽15内，轴向弹片组件30包括轴向弹片31、第二紧固件32及第二弹性元件33，第二弹性元件33位于轴向弹片31与轴向凹槽槽底151之间，第二紧固件32连接轴向弹片31与轴向凹槽槽底151，第二弹性元件可以为弹簧或其他弹性部件。
进一步地，轴向弹片组件30还可以包括第二弹性元件33，第二弹性元件33位于轴向弹片31与轴向凹槽槽底151之间。
在本实施例中，第二紧固件32为螺钉，在其他的实施方式中，第二紧固件32也可以为铆钉、销等。
轴向弹片组件30可以为多个，对应地，镜头卡件17设有多个轴向凹槽15，以提高镜头卡件17对投影机镜头40的在轴线A1方向上的卡接力，进一步提高投影机镜头40的稳固程度。多个轴向弹片组件30可以在平面配合面12表面等间距设置也可以非等间距设置，对应地，轴向凹槽15等间距设置或非等间距设置，以使投影机镜头40与镜头卡件17接触的卡爪42受力均匀，可以进一步提高投影机镜头40在轴向上卡接的稳固性。
参阅图8，轴向弹片31包括第四弹片区311、第五弹片区312和第六弹片区313，第四弹片区311与第六弹片区313分别位于第五弹片区312的两端并分别与第五弹片区312连接，例如在本实施例中，第四弹片区311与第六弹片区313分别位于第五弹片区312的两端并分别与第五弹片区312以一定的角度连接，第四弹片区311、第五弹片区312和第六弹片区313不共面。第二紧固件32与第四弹片区311连接，具体地，第四弹片区311设有开孔使得第二紧固件32穿过。第二弹性元件33与第六弹片区313连接。
轴向弹片31可以为塑料、金属等，具有一定的弹性，轴向弹片31包括第四弹片区311、第五弹片区312和第六弹片区313，第五弹片区312与第四弹片区311及第六弹片区313角度连接。在本实施例中，第四弹片区311、第五弹片区312和第六弹片区313包括长方形表面。在本实用新型的其他实施方式中，第四弹片区311、第五弹片区312和第六弹片区313也可以包括其他形状的表面，如梯形，五边形等。
参阅图8及图9，第五弹片区312相对平面配合面12所在的平面倾斜，第六弹片区313具有一定的长度和宽度，当卡爪42的位置沿装配环面41存在一定范围的制造误差时，也可以保证卡爪42能与第六弹片区313的表面或者至少一部分表面弹性抵接，提高镜头支架100的适配范围。
结合图3及图8，第四弹片区311与端面13的间距小于平面配合面12与与端面13的间距，第六弹片区313与端面13的间距大于平面配合面12与端面13的间距，并且第四弹片区311设有的第二紧固件32的顶面要低于平面配合面12，便于投影机镜头40与镜头支架100进行卡接时将投影机镜头40沿A3方向进行旋转，卡爪42从平面配合面12旋转经过第四弹片区311及第五弹片区312转至第六弹片区313。优选地，第六弹片区313与平面配合面12沿轴线A1方向的距离为0.2mm。
继续参阅图3及图8，第六弹片区313和端面13的间距为W3，具体地，(W3-W2)-(W1-W2)＞0，即第六弹片区313和端面13的间距W3与平面配合面12与端面13的间距W2的差值大于装配环面41的环宽W1与平面配合面12与端面13的间距W2的差值，保证当投影机镜头40与镜头支架100卡接后，卡爪42压缩第二弹性元件33，第二弹性元件33给与投影机镜头40以一定的回复力，回复力沿轴线A1方向，即当第六弹片区313和端面13的间距W3与平面配合面12与端面13的间距W2的差值大于装配环面41的环宽W1与平面配合面12与端面13的间距W2的差值时，投影机镜头40与镜头支架100可以紧固卡接，避免投影机镜头40沿镜头支架100的轴线A1方向晃动。
具体地，在本实施例中，1.5mm＞(W3-W2)-(W1-W2)＞0.05mm，即当第六弹片区313和端面13的间距W3与平面配合面12与端面13的间距W2的差值(W3-W2)大于装配环面41的环宽W1与平面配合面12与端面13的间距W2的差值(W1-W2)，且二者的差值范围(W3-W2)-(W1-W2)为0.05mm-1.5mm时，不仅能保证卡爪42压缩第二弹性元件33且能使第二弹性元件33处于合适的压缩状态，有利于提高第二弹性元件33的使用寿命。优选地，0.5mm＞(W3-W2)-(W1-W2)＞0.1mm。
参阅图6及图7，轴向弹片31与卡爪42弹性抵接，具体地，第六弹片区313与卡爪42弹性抵接，第六弹片区313可以设置两个凸起以增强与卡爪42的抵接效果。
综上，本实施例提供的镜头支架100通过径向弹片组件20与轴向弹片组件30与投影机镜头40弹性抵接，具体的是，镜头支架100通过将轴向弹片组件30设于轴向凹槽和将径向弹片组件20设于径向凹槽和投影机镜头进行弹性抵接，不仅可以有效避免投影机镜头40沿镜头支架100的轴线A1方向和径向晃动，进而改善投影效果，镜头支架100可以和轴向或径向上具有较大误差的投影机镜头40均能稳固卡接，适用范围广，除此之外，镜头支架100适配各种在配合位置处存在制造误差的投影机镜头40。
第二实施例
参阅图10，本实施例提供一种投影机200，投影机200包括第一实施例提供的镜头支架100和投影机镜头40，镜头支架100卡接于投影机镜头40。
投影机200通过采用上述镜头支架100提高了投影机200对投影机镜头40的适配范围，在投影机镜头40损坏情况下，方便更换新的投影机镜头40，且新的投影机镜头40允许存在一定的尺寸误差，延长投影机200的使用寿命。
以上实施例仅用以说明本实用新型的技术方案，而非对其限制；尽管参照前述实施例对本实用新型进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本实用新型各实施例技术方案的精神和范围，均应包含在本实用新型的保护范围之内。

Claims (13)

  1. 一种镜头支架，其特征在于，包括:
    镜头卡具，所述镜头卡具与投影机镜头卡接，所述镜头卡具设有径向凹槽与轴向凹槽；
    径向弹片组件，所述径向弹片组件设于所述径向凹槽并与所述投影机镜头弹性抵接；
    轴向弹片组件，所述轴向弹片组件设于所述轴向凹槽并与所述投影机镜头弹性抵接。
  2. 如权利要求1所述的镜头支架，其特征在于，所述径向弹片组件与所述投影机镜头的装配环面弹性低接，所述轴向弹片组件与所述投影镜头的卡爪弹性抵接。
  3. 如权利要求2所述的镜头支架，其特征在于，所述镜头支架具有径向，所述镜头卡具包括弧面配合面，所述弧面配合面的法线和所述径向重合，所述弧面配合面与所述装配环面抵接，所述径向凹槽开设于所述弧面配合面。
  4. 如权利要求3所述的镜头支架，其特征在于，所述径向弹片组件包括径向弹片和第一紧固件，所述第一紧固件连接所述径向弹片与径向凹槽槽底，所述径向弹片与所述装配环面弹性抵接。
  5. 如权利要求4所述的镜头支架，其特征在于，所述径向弹片组件还包括第一弹性元件，所述第一弹性元件位于所述径向弹片与所述径向凹槽槽底之间。
  6. 如权利要求4或5所述的镜头支架，其特征在于，所述径向弹片包括第一弹片区、第二弹片区和第三弹片区，所述第一弹片区与所述第三弹片区分别位于所述第二弹片区的两端并分别与所述第二弹片区连接，所述第一紧固件与所述第一弹片区连接，所述第二弹片区与所述第三弹片区中的至少一个和所述第一弹性元件连接，所述第二弹片区与所述装配环面弹性抵接。
  7. 如权利要求6所述的镜头支架，其特征在于，所述第二弹片区的端部凸出于所述弧面配合面，所述第二弹片区的端部与所述装配环面弹性抵接，所述第一弹片区和所述第三弹片区相对所述弧面配合面凹进。
  8. 如权利要求2所述的镜头支架，其特征在于，所述镜头支架具有轴线，所述镜头卡具包括平面配合面及端面，所述平面配合面与所述端面相背，所述平面配合面垂直于所述轴线，并与所述投影镜头的卡爪抵接，所述轴向凹槽开设于所述平面配合面。
  9. 如权利要求8所述的镜头支架，其特征在于，所述轴向弹片组件包括轴向弹片和第二紧固件，所述第二紧固件连接所述轴向弹片与所述轴向凹槽槽底，所述轴向弹片与所述投影镜头的卡爪弹性抵接。
  10. 如权利要求9所述的镜头支架，其特征在于，所述轴向弹片组件还包括第二弹性元件，所述第二弹性元件位于所述轴向弹片与轴向凹槽槽底之间。
  11. 如权利要求9或10所述的镜头支架，其特征在于，所述轴向弹片包括第四 弹片区、第五弹片区和第六弹片区，所述第四弹片区与所述第六弹片区分别位于所述第五弹片区的两端并分别与所述第五弹片区连接，所述第二紧固件与所述第四弹片区连接，所述第二弹性元件与所述第六弹片区连接，所述第六弹片区与所述投影镜头的卡爪弹性抵接。
  12. 如权利要求11所述的镜头支架，其特征在于，所述第四弹片区与所述端面的间距小于所述平面配合面和所述端面的间距，所述第六弹片区与所述端面的间距大于所述平面配合面和所述端面的间距。
  13. 一种投影机，其特征在于，所述投影机包括如权利要求1-12中任一项所述的镜头支架与所述投影机镜头，所述镜头支架卡接于所述投影机镜头。
PCT/CN2019/127265 2019-01-07 2019-12-23 镜头支架及投影机 Ceased WO2020143435A1 (zh)

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