WO2017128924A1 - 投影机镜头固定结构及使用其的超短焦投影机 - Google Patents

投影机镜头固定结构及使用其的超短焦投影机 Download PDF

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Publication number
WO2017128924A1
WO2017128924A1 PCT/CN2016/113655 CN2016113655W WO2017128924A1 WO 2017128924 A1 WO2017128924 A1 WO 2017128924A1 CN 2016113655 W CN2016113655 W CN 2016113655W WO 2017128924 A1 WO2017128924 A1 WO 2017128924A1
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Prior art keywords
lens
projector
fixing structure
housing
elastic
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PCT/CN2016/113655
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French (fr)
Inventor
黄思尧
李屹
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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Publication of WO2017128924A1 publication Critical patent/WO2017128924A1/zh
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • 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 present application relates to the field of projectors, and more particularly to a projector lens fixing structure and an ultra short throw projector fixed using the same.
  • the lens of the projector is a precision optical component, and the slight deviation of its position will cause the projector to focus inaccurate.
  • the lens is more sensitive to the position deviation, and the ultra short-throw projector in the existing market.
  • Most of the lenses are not suspended directly. In areas where road conditions are poor during transportation, the bumps tend to cause the lens to swing up and down, which degrades the image display effect.
  • the ultra-short-throw projector lens and the bottom support surface are rigidly fixed by screwing directly through the support column, but the rigid fixing method is easy to cause lens distortion when the components are deformed by force, resulting in unclear lens focus, etc. The problem seriously affects the reliability of the projector.
  • the present application provides a projector lens fixing structure
  • the projector lens includes a lens housing
  • the projector includes a projector housing
  • the lens fixing structure includes a support column on the projector housing, and is connected to
  • the support frame on the lens housing is characterized in that the support frame and the support column are fixedly connected by an elastic member.
  • the projector lens fixing structure is between two rigid support points of the lens.
  • the supporting force of the fixed structure to the projector lens is greater than the supporting force of the rigid supporting point to the projector lens.
  • the elastic fixing member has a cross-section in an "I" shape, and the contact end of the supporting frame and the elastic fixing member is provided with a notch, and the supporting frame is engaged with the elastic fixing member through the notch. Outer week.
  • the arc of the notch is a superior arc.
  • the elastic fixing member is a hollow structure, and a screw fixes the elastic fixing member on the supporting column through an intermediate space of the elastic fixing member.
  • one end of the support frame connected to the lens housing is provided with a protruding guide post, and the lens housing is pre-formed with a through hole, and the support frame is inserted into the through hole connection through the guide post.
  • the lens housing is provided with a protruding guide post, and the lens housing is pre-formed with a through hole, and the support frame is inserted into the through hole connection through the guide post.
  • the support frame has an elastic force acting on the lens housing and the elastic member.
  • the fixing structures are respectively disposed on two sides of the lens housing.
  • the solution supports the lens housing of the projector through elastic members, and the rigid support is partially elastically supported.
  • the elastic member can be buffered, effectively isolating the rigid force from being transmitted to the projection lens, thereby avoiding the lens. Deformed by the rigid force.
  • Another aspect of the present invention provides an ultra short throw projector comprising an ultra short throw projector lens fixed by the projector lens fixing structure according to any of the above.
  • FIG. 1 is a structural diagram of a whole projector housing of the present invention
  • FIG. 2 is a schematic view showing the fixing structure of the projector lens of the present embodiment.
  • the idea of the present invention is that the projector lens fixing structure is supported by an elastic structure that effectively isolates the transmission of the rigid force to the lens.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the outer periphery of the projector lens is provided with a casing
  • the sheet metal is usually used to cover at least part of the lens of the projector, and the sheet metal member is selected as the lens casing of the projector, which can both have good heat dissipation and strong mechanical strength.
  • the sheet metal lens housing 20 is connected to the support frame 10.
  • the support frame 10 usually also uses a sheet metal member.
  • the support frame 10 of the present embodiment has two end portions, the first end is fixed to the lens housing 20, and the second end 11 is elastic.
  • the member 30 is coupled to a support post 40 that is secured to the housing 50.
  • the elastic fixing structure is elastically deformed when the projector is subjected to an external force, thereby offsetting the external force received by the lens. The reliability of the lens is guaranteed.
  • the elastic lens fixing structure of the lens in the embodiment effectively isolates the rigid force from being transmitted to the projector lens, and the inventors have found that the elastic fixing structure has an important influence on the fixed position on the lens, and is confirmed by multiple tests to be elastically fixed.
  • the structure is disposed between two rigid support points of the lens, and the two rigid support points are generally direct contact points between the lens housing and the projector housing, which can effectively eliminate the rigidity force.
  • the fixing force can be eliminated, and the supporting force of the fixing structure in the present embodiment on the lens housing 20 is greater than the supporting force of the lens rigid supporting point on the lens.
  • the fixing structure in this embodiment can effectively isolate and eliminate the rigidity. Prevent the lens from shifting.
  • the lens housing 20 is pre-formed with a through hole, and the first end of the support frame 10 and the lens housing 20 is provided with a convex portion.
  • the protrusions can be inserted into the through holes to facilitate the connection of the support frame 10 to the lens housing 20.
  • the second end 11 of the support frame 10 is connected to the support post 40 through the elastic member 30.
  • the second end 11 of the support frame 10 is provided with a notch.
  • the notch may be a semi-circular notch having a small opening.
  • the elastic member having the "work" shape cross-section is engaged with the outer peripheral portion of the "work"-shaped elastic member, and is engaged with the elastic member.
  • the elastic member 30 Since the elastic member 30 has a hollow structure, the semi-circular notch is caught in the outer periphery of the elastic member 30, and is squeezed. The elastic member 30 is deformed. After the semicircular notch is completely engaged with the outer periphery of the elastic member 30, the elastic member is fixed to the support post 40 by screws 60. In order to prevent the elastic member 30 from slipping out of the screw 60, the screw 60 and The washer 61 is prevented between the elastic members 30 to securely fix the elastic member 30 to the support post 40. After the screw 60 passes through the hollow portion of the elastic member 30, not only the elasticity is effectively fixed, but also the screw fills the hollow portion, and the second end 11 of the semicircular notch support frame 10 with small opening is prevented from slipping off.
  • the fixing structure in the present embodiment is flexible in position, that is, it can be symmetrically disposed on both sides of the lens housing 20, or can be staggered on both sides of the lens housing 20, depending on the space available for the projector.
  • an ultra short throw projector is provided. Since the ultra short throw projector lens is very sensitive to external rigidity, the fixed structure in the present embodiment is particularly suitable for fixing the fixing of the ultra short throw projector lens.
  • the scheme adopts an elastic structure to strengthen the fixed projector lens, and the elastic member disposed between the support column and the support frame effectively isolates the rigid force from being transmitted to the lens, thereby effectively solving the external rigidity of the projector due to bumps during transportation.
  • the technical problem caused by the displacement of the lens ensures the reliability of the projector.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)

Abstract

一种投影机镜头固定结构，所述投影机镜头包括镜头外壳（20），所述投影机包括投影机壳体（50），所述镜头固定结构包括位于所述投影机壳体（50）上的支撑柱（40），连接在所述镜头外壳（20）上的支撑架（10），其特征在于，所述支撑架（10）与所述支撑柱（40）之间通过弹性件（30）固定连接。所述投影机镜头固定结构通过弹性件（30）对投影机镜头外壳（20）进行支撑，将刚性支撑变为部分弹性支撑，当投影机镜头在受到外力时，弹性件（30）可进行缓冲，有效隔离了刚性力传递到投影镜头，避免镜头因受刚性力产生变形。

Description

投影机镜头固定结构及使用其的超短焦投影机 技术领域
本申请涉及投影机领域，尤其是涉及一种投影机镜头固定结构和使用其固定的超短焦投影机。
 背景技术
投影机的镜头是精密的光学部件，其位置的微小偏差将会导致投影机对焦不准，对于超短焦投影机而言，镜头对位置的偏差更为敏感，现有市场中超短焦投影机镜头大多直接悬空不固定，在运输途中遇到路况差的地区，由于颠簸容易造成镜头上下摆动，从而使图像显示效果劣化。为此部分超短焦投影机镜头与底部支撑面通过支撑柱直接通过打螺钉进行刚性固定，但是该刚性固定的方式，当各部件受力变形时，容易引起镜头变形，造成镜头聚焦不清等问题，严重影响投影机整机可靠性。
 技术问题
为了克服外壳受力引起超短焦投影机镜头聚焦失真，调焦难度大，运输途中防止镜头受力移动，有必要提供一种镜头固定结构，克服上述技术问题。
 技术解决方案
本申请提供一种投影机镜头固定结构，所述投影机镜头包括镜头外壳，所述投影机包括投影机壳体，所述镜头固定结构包括位于所述投影机壳体上的支撑柱，连接在所述镜头外壳上的支撑架，其特征在于，所述支撑架与所述支撑柱之间通过弹性件固定连接。
进一步的，所述投影机镜头固定结构处于镜头的两个刚性支撑点之间。
进一步的，所述固定结构的对投影机镜头的支撑力大于刚性支撑点对投影机镜头的支撑力。
进一步的，所述弹性固定件的剖面呈“工”字形，所述支撑架与所述弹性固定件接触端部设有缺口，所述支撑架通过所述缺口卡接在所述弹性固定件的外周。
进一步的，所述缺口的弧形为优弧。
进一步的，所述弹性固定件为中空结构，一螺钉通过该弹性固定件的中间空间将所述弹性固定件固定在所述支撑柱上。
进一步的，所述支撑架与所述镜头外壳连接的一端设有凸起的导柱，所述镜头外壳上预设有通孔，所述支撑架通过所述导柱插入所述通孔连接所述镜头外壳。
进一步的，所述支撑架对镜头外壳和所述弹性件具有弹性力作用。
进一步的，所述固定结构分别设置在所述镜头外壳两侧。
 有益效果
本方案通过弹性件对投影机镜头外壳进行支撑，将刚性支撑变为部分弹性支撑，当投影机镜头在受到外力时，弹性件可进行缓冲，有效隔离了刚性力传递到投影镜头，避免镜头因受刚性力产生变形。
本发明另一个方面提供一种超短焦投影机，包括超短焦投影机镜头，所述超短焦投影机透镜通过上述任一项所述的投影机镜头固定结构固定。
 附图说明
图1为本方案投影机壳体整机结构图；
图2为本方案投影机镜头固定结构示意图。
 本发明的最佳实施方式
下面通过具体实施方式结合附图对本申请作进一步详细说明。
为了防止投影机镜头受力发生偏移或变形，本发明的构思为投影机镜头固定结构使用弹性结构支撑，弹性结构有效隔离了刚性力传递至镜头。
实施例一：
本实施例中的投影机镜头外围设置有外壳，通常选用钣金件包覆投影机至少部分镜头，选用钣金件作为投影机镜头外壳既可以良好的散热同时也具有较强的机械强度，该钣金镜头外壳20与支撑架10连接，支撑架10通常也使用钣金件，本实施方式中的支撑架10具有两个端部，第一端与镜头外壳20固定，第二端11通过弹性件30与固定于壳体50上的支撑柱40连接。
本实施例中通过在投影机镜头的壳体和投影机壳体之间设置至少一个弹性固定结构，使得投影机在受外力作用时，弹性固定结构发生弹性形变，从而抵消镜头所受的外力，保证了镜头的可靠性。
更具体的说，本实施例中的镜头的弹性镜头固定结构有效隔离刚性力传递至投影机镜头，发明人发现弹性固定结构在镜头上的固定位置有重要影响，通过多次试验证实，弹性固定结构设在镜头的两个刚性支撑点之间，该两个刚性支撑点一般为镜头外壳与投影机壳体的直接接触点，可以有效的消除刚性力。同时为了固定结构能够起到消除刚性力的作用，本方案中的固定结构对镜头外壳20的支撑力大于镜头刚性支撑点对镜头的支撑力。如此本实施方案中的固定结构可以有效隔离和消除刚性力。防止镜头发生位移。
固定结构的安装便利性可提高生产效率和产品可靠性，本方案考虑到上述问题，在镜头外壳20上预设有通孔，将支撑架10与镜头外壳20连接的第一端上设置有凸起，上述凸起可插入通孔中，方便支撑架10与镜头外壳20的连接。支撑架10的第二端11与支撑柱40通过弹性件30连接，支撑架10的第二端11上开设有缺口，该缺口可以是开口小的半圆形缺口，该半圆形缺口可以与具有“工”字形剖面的弹性件配合，卡入“工”字形弹性件的外周中间部分，咬合在弹性件，由于弹性件30为中空结构，半圆形缺口卡入弹性件30外周时，挤压弹性件30产生形变，待半圆形缺口完全卡如弹性件30外周后，再通过螺钉60将弹性件固定在支撑柱40上，为了防止弹性件30从螺钉60中滑脱，在螺钉60和弹性件30之间防止垫圈61，以可靠的将弹性件30固定在支撑柱40上。螺钉60通过弹性件30的中空部分后不仅对弹性有效的进行固定，同时螺钉填充年了中空部分，也可防止开口小的半圆形缺口支撑架10的第二端11滑脱。
支撑架10固定在镜头外壳20和支撑柱40之间时，该支撑架10可发生形变，其第一端紧撑镜头外壳，第二端11紧撑弹性件30，由此支撑架10也具有弹性，可以进一步的隔离刚性弹性力传递至透镜外壳。本方案中的固定结构设置位置灵活，即可以对称的设置在镜头外壳20的两侧，也可以错开的设置在镜头外壳20的两侧，视投影机可利用空间的而定。
本发明的另外一个方面，提供一种超短焦投影机，由于超短焦投影机镜头对外刚性力非常敏感，本方案中的固定结构尤其适合解决超短焦投影机镜头的固定。
综上，本方案采用弹性结构加强固定投影机镜头，设置在支撑柱和支撑架之间的弹性件有效隔离了刚性力传递到镜头上，有效解决了投影机因运输中颠簸等外在刚性力引起的镜头发生位移的技术问题，保证了投影机的可靠性。
以上内容是结合具体的实施方式对本申请所作的进一步详细说明，不能认定本申请的具体实施只局限于这些说明。对于本申请所属技术领域的普通技术人员来说，在不脱离本申请发明构思的前提下，还可以做出若干简单推演或替换。

Claims (10)

1 、一种投影机镜头固定结构，所述投影机镜头包括镜头外壳，所述投影机包括投影机壳体，所述镜头固定结构包括位于所述投影机壳体上的支撑柱，连接在所述镜头外壳上的支撑架，其特征在于，所述支撑架与所述支撑柱之间通过弹性件固定连接。
2、根据权利要求1所述的投影机镜头固定结构，其特征在于，所述固定结构处于镜头的两个刚性支撑点之间。
3、根据权利要求2所述的投影机镜头固定结构，其特征在于，所述固定结构的对所述镜头外壳的支撑力大于刚性支撑点对镜头外壳的支撑力。
4、根据权利要求1所述的投影机镜头固定结构，其特征在于，所述弹性固定件的剖面呈“工”字形，所述支撑架与所述弹性固定件接触端部设有缺口，所述支撑架通过所述缺口卡接在所述弹性固定件的外周。
5、根据权利要求4所述的投影机镜头固定结构，其特征在于，所述缺口的弧形为优弧。
6、根据权利要求4所述的投影机镜头固定结构，其特征在于，所述弹性固定件为中空结构，一螺钉通过该弹性固定件的中空结构固定在所述支撑柱上。
7、根据权利要求1所述的投影机镜头固定结构，其特征在于，所述支撑架与所述镜头外壳连接的一端设有凸起的导柱，所述镜头外壳上预设有通孔，所述支撑架通过所述导柱插入所述通孔连接所述镜头外壳。
8、根据权利要求7所述的投影机镜头固定结构，其特征在于，所述支撑架对所述镜头外壳和所述弹性件具有弹性力作用。
9、根据权利要求1所述的投影机镜头固定结构，其特征在于，所述固定结构分别设置在所述镜头外壳两侧。
10、一种超短焦投影机，包括超短焦投影机镜头，其特征在于，所述超短焦投影机镜头通过权利要求1至9任一项所述的投影机镜头固定结构固定。
PCT/CN2016/113655 2016-01-27 2016-12-30 投影机镜头固定结构及使用其的超短焦投影机 Ceased WO2017128924A1 (zh)

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CN205539886U (zh) * 2016-01-27 2016-08-31 深圳市光峰光电技术有限公司 投影机镜头固定结构及使用其的超短焦投影机
CN108897187B (zh) * 2018-06-20 2020-11-27 苏州佳世达光电有限公司 投影机
CN112731745B (zh) * 2020-12-31 2022-02-11 成都极米科技股份有限公司 一种光机减震支架以及对应的投影仪
CN214846196U (zh) 2021-06-11 2021-11-23 中强光电股份有限公司 投影镜头模块及投影机
CN116339043A (zh) 2021-12-22 2023-06-27 中强光电股份有限公司 投影机

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CN205539886U (zh) * 2016-01-27 2016-08-31 深圳市光峰光电技术有限公司 投影机镜头固定结构及使用其的超短焦投影机

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CN204166271U (zh) * 2014-09-12 2015-02-18 方维行 一种投影仪镜头固定装置
CN204203535U (zh) * 2014-09-18 2015-03-11 深圳誉品光电技术有限公司 一种镜头与镜头座的连接结构
CN205539886U (zh) * 2016-01-27 2016-08-31 深圳市光峰光电技术有限公司 投影机镜头固定结构及使用其的超短焦投影机

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