WO2017185556A1 - 一种调焦机构以及包含该调焦机构的虚拟现实头盔 - Google Patents

一种调焦机构以及包含该调焦机构的虚拟现实头盔 Download PDF

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Publication number
WO2017185556A1
WO2017185556A1 PCT/CN2016/094001 CN2016094001W WO2017185556A1 WO 2017185556 A1 WO2017185556 A1 WO 2017185556A1 CN 2016094001 W CN2016094001 W CN 2016094001W WO 2017185556 A1 WO2017185556 A1 WO 2017185556A1
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Prior art keywords
gear
bevel gear
focusing mechanism
seat body
display screen
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PCT/CN2016/094001
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English (en)
French (fr)
Inventor
黄卫克
李炜
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深圳市掌网科技股份有限公司
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Publication of WO2017185556A1 publication Critical patent/WO2017185556A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B27/0176—Head mounted characterised by mechanical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays

Definitions

  • the present invention relates to the field of virtual reality devices, and in particular, to a focus adjustment mechanism and a virtual reality helmet including the focus adjustment mechanism.
  • the virtual reality helmet usually needs to adjust the VR focal length after wearing.
  • the VR focal length refers to the distance from the display screen to the lens when the human eye sees the picture, usually by moving the display screen to adjust the VR focal length.
  • the technical problem to be solved by the present invention is to provide a focusing mechanism and a virtual reality helmet including the focusing mechanism for the above-mentioned drawbacks of the prior art.
  • the technical solution adopted by the present invention to solve the technical problem is to construct a focusing mechanism for driving the telescopic movement of the display screen in the virtual reality helmet to realize focusing, including a fixed body disposed at the display end and the display screen. And adjusting gears disposed on two sides of the helmet, the two sides of the seat body are respectively provided with driving gears for telescopically driving the seat body; the adjusting gears are driven by the transmission gear set when being rotated by the user The drive gear rotates;
  • the drive gear comprises a first bevel gear fixed coaxially and a threaded connection threadedly connected to the seat body;
  • the adjustment gear comprises a roller and a second bevel gear fixed coaxially with the roller
  • the transmission gear set includes a coaxial fixed third bevel gear and a fourth bevel gear, and a third cone The gear is meshed with the first bevel gear and the fourth bevel gear meshes with the second bevel gear.
  • the rotating shaft of the first bevel gear, the rotating shaft of the third bevel gear and the fourth bevel gear, and the rotating shaft of the second bevel gear are perpendicular to each other, and
  • the rotation axis of the first bevel gear is perpendicular to the seat body, and the rotation axis of the second bevel gear is parallel to a side of the seat body on which the drive gear is disposed.
  • the drive gear includes a limit end for limiting the moving distance of the seat.
  • the transmission gear sets on both sides are connected by a linkage rod.
  • the base body is further provided with a limiting member perpendicular to the base body for limiting the moving distance of the display screen.
  • the stopper housing is provided with a spring for buffering.
  • the present invention also discloses a virtual reality helmet comprising a focusing mechanism as described above.
  • the focusing mechanism of the present invention and the virtual reality helmet including the focusing mechanism have the following beneficial effects: the focusing mechanism of the present invention can rotate the adjusting gear to drive the transmission gear set to rotate, thereby driving the driving gear to rotate, and the driving gear passes The rotation realizes the expansion and contraction of the seat body. Because the seat body is connected with the display screen, the telescopic expansion of the seat body finally leads to the expansion and contraction of the display screen, thereby realizing the movement of the display screen to adjust the VR focal length.
  • FIG. 1 is a schematic structural view of a focusing mechanism of the present invention
  • FIG. 2 is a schematic structural view of the drive gear of FIG. 1.
  • the invention discloses a focusing mechanism and a virtual reality helmet comprising the focusing mechanism.
  • the focusing mechanism is used for driving the display screen telescopic movement in the virtual reality helmet to realize VR focusing.
  • FIG. 1 is a schematic structural view of a focusing mechanism of the present invention.
  • the focusing mechanism includes a seat body 1 fixedly disposed on the display screen end and the display screen, and an adjusting gear 4 disposed on two sides of the helmet body, and the two sides of the seat body 1 are respectively disposed and used for driving the seat body by rotation
  • a telescopic drive gear 2 that is driven to rotate by the drive gear set 3 when being rotated by a user.
  • the user can directly push the adjusting gear 4, the adjusting gear 4 drives the transmission gear set 3 to rotate, thereby driving the driving gear 2 to rotate, and the driving gear 2 drives the seat body 1 to expand and contract by rotation, because the seat body 1 and the display screen
  • the telescoping of the seat body 1 finally leads to the telescopic movement of the display screen, thereby realizing the adjustment of the VR focal length.
  • the base body 1 is substantially a rectangular frame, and the front surface thereof is connected to the display screen, and a light transmissive member 9 having two light transmission holes is disposed behind the stack.
  • the light transmitting member 9 is substantially in the shape of a plate. The size is comparable to the hollow area of the rectangular frame.
  • the driving gears 2 are disposed on the left and right sides of the seat body 1, and the extending direction of the driving gear 2 is parallel to the light emitting direction of the display screen, that is, perpendicular to the seat body 1.
  • the overall length of the drive gear 2 is 10-50 mm.
  • the drive gear 2 includes a coaxially fixed first bevel gear 21 at the end and a threaded connection 22 threadedly connected to the seat body 1, namely a first bevel gear 21 and a threaded connection.
  • the rotation axes of 22 are the same, and are parallel to the light-emitting direction of the display screen, that is, perpendicular to the seat body 1.
  • Seat 1 The upper opening is provided with a corresponding threaded hole, and the threaded connecting portion 22 is embedded in the threaded hole.
  • the present invention rotates the threaded portion 22 by rotating the first bevel gear 21, and the rotation of the threaded portion 22 ultimately causes expansion and contraction of the seat body 1.
  • the end of the threaded connecting portion 22 facing the seat body 1 is not threaded, but a limiting end 23 of the non-threaded structure, which can limit the moving distance of the seat body 1 in the opposite direction to the light-emitting direction of the display screen. , that is, to limit the moving distance of the display screen in the opposite direction to the light exiting direction.
  • a limiting member 6 may be vertically disposed at each of the four corners of the base body 1, that is, the extending direction of the limiting member 6 is the same as that of the driving gear 2, and the seat is After the body 1 moves to a certain distance in the light-emitting direction, the limiting member 6 will resist the other components of the helmet, thereby realizing limiting the moving distance of the display screen, and more specifically, limiting the moving distance of the display screen in the light-emitting direction thereof.
  • a spring 7 is respectively disposed outside each of the limiting members 6, and the spring 7 helps to achieve buffering.
  • a support frame 5 is fixed to each of the left and right sides of the mobile virtual reality helmet, and the support frame 5 is located below the drive gear 2.
  • the adjustment gear 4 is fixed to the support frame 5.
  • the adjustment gear 4 includes a roller 41 and a second bevel gear 42 coaxially fixed to the roller 41, that is, the rotation axes of the roller 41 and the second bevel gear 42 are the same. Specifically, the rotational axes of the roller 41 and the second bevel gear 42 are parallel to the side of the seat body 1 on which the drive gear 2 is mounted. The second bevel gear 42 is located above the roller 41.
  • the transmission gear set 3 includes a third bevel gear 31 and a fourth bevel gear 32 that are coaxially fixed, that is, the rotation axes of the third bevel gear 31 and the fourth bevel gear 32 are the same, specifically, the third cone
  • the rotation axes of the gears 31 and the fourth bevel gears 32 hang from the side of the seat 1 on which the drive gear 2 is mounted and are parallel to the plane of the seat. That is, the rotation axes of the third bevel gear 31 and the fourth bevel gear 32 are the first
  • the rotation axis of the bevel gear 21 and the rotation axis of the second bevel gear 42 are perpendicular to each other.
  • the third bevel gear 31 meshes with the first bevel gear 21, and the fourth bevel gear 32 meshes with the second bevel gear 42.
  • the adjustment gear 4 on both sides can be adjusted in principle to adjust the VR focal length.
  • the transmission gear sets 3 on both sides are connected by a linkage rod 8.
  • a transmission gear set 3 is respectively connected in series at both ends of the linkage rod 8, so that the user only needs to adjust the adjustment gear 4 on one side, and the adjustment synchronization can be ensured, so that the display screen can be smoothly expanded and contracted.
  • the fourth side in this embodiment is the fourth.
  • the tapered faces of the bevel gears 32 face in opposite directions, and the tapered faces of the third bevel gears 31 on both sides are the same.
  • the roller 41 When focusing, the roller 41 is moved, and the roller 41 is coaxially fixed with the second bevel gear 42, so that the second bevel gear 42 also rotates, and the rotation of the second bevel gear 42 drives the fourth taper that meshes with it.
  • the gear 32 rotates, and the fourth bevel gear 32 is coaxially fixed with the third bevel gear 31, so that the third bevel gear 31 rotates, and the third bevel gear 31 rotates to drive the first bevel gear 21 meshed therewith.
  • Rotation, the first bevel gear 21 is coaxially fixed with the screw connection portion 22, so that the screw connection portion 22 rotates, and the screw connection portion 22 is screwed to the base body 1, so that the seat body 1 is telescopically extended, and the seat body 1 is telescopically displayed.
  • the expansion and contraction of the screen enables adjustment of the VR focal length.
  • the focus adjustment mechanism embodying the present invention and the virtual reality helmet including the focus adjustment mechanism have the following beneficial effects:
  • the focus adjustment mechanism of the present invention can rotate the adjustment gear to drive the transmission gear set to rotate, thereby driving the drive gear. Rotating, the driving gear is driven to rotate and expand the seat body. Because the seat body is connected with the display screen, the telescopic expansion of the seat body finally leads to the expansion and contraction of the display screen, thereby realizing the mobile display. Screen to adjust the VR focal length.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Helmets And Other Head Coverings (AREA)

Abstract

一种调焦机构以及包含该调焦机构的虚拟现实头盔，所述调焦机构包括位于显示屏端与显示屏固定设置的座体（1）以及设置于所述头盔两侧的调节齿轮（4），所述座体（1）两侧分别设置有用于通过旋转驱动所述座体（1）伸缩的驱动齿轮（2）；所述调节齿轮（4）在被用户拨动旋转时通过传动齿轮组（3）驱动所述驱动齿轮（2）旋转。其中，所述驱动齿轮（2）包括同轴固定的第一锥形齿轮（21）和与所述座体（1）螺纹连接的螺纹连接部（22）；所述调节齿轮（4）包括一个滚轮（41）和与所述滚轮（41）同轴固定的第二锥形齿轮（42）；所述传动齿轮组（3）包括同轴固定的第三锥形齿轮（31）和第四锥形齿轮（32），第三锥形齿轮（31）与第一锥形齿轮（21）啮合，第四锥形齿轮（32）与第二锥形齿轮（42）啮合。

Description

一种调焦机构以及包含该调焦机构的虚拟现实头盔 技术领域
本发明涉及虚拟现实装置领域，尤其涉及一种调焦机构以及包含该调焦机构的虚拟现实头盔。
背景技术
虚拟现实头盔(VR头盔)在佩戴后通常需要调节VR焦距，该VR焦距是指人眼看清图片时显示屏到透镜的距离，通常是通过移动显示屏来调节VR焦距。
发明内容
本发明要解决的技术问题在于，针对现有技术的上述缺陷，提供一种调焦机构以及包含该调焦机构的虚拟现实头盔。
本发明解决其技术问题所采用的技术方案是：构造一种调焦机构，用于驱动虚拟现实头盔中的显示屏伸缩移动以实现调焦，包括位于显示屏端与显示屏固定设置的座体以及设置于所述头盔两侧的调节齿轮，所述座体两侧分别设置有用于通过旋转驱动所述座体伸缩的驱动齿轮；所述调节齿轮在被用户拨动旋转时通过传动齿轮组驱动所述驱动齿轮旋转；
其中，所述驱动齿轮包括同轴固定的第一锥形齿轮和与所述座体螺纹连接的螺纹连接部；所述调节齿轮包括一个滚轮和与所述滚轮同轴固定的第二锥形齿轮；所述传动齿轮组包括同轴固定的第三锥形齿轮和第四锥形齿轮，第三锥 形齿轮与第一锥形齿轮啮合，第四锥形齿轮与第二锥形齿轮啮合。
在本发明所述的调焦机构中，所述第一锥形齿轮的转动轴、第三锥形齿轮和第四锥形齿轮的转动轴、第二锥形齿轮的转动轴两两垂直，且所述第一锥形齿轮的转动轴垂直于所述座体，所述第二锥形齿轮的转动轴与所述座体的设置所述驱动齿轮的侧边平行。
在本发明所述的调焦机构中，所述驱动齿轮包括一个用于限制所述座体的移动距离的限位端。
在本发明所述的调焦机构中，两侧的所述传动齿轮组通过一根连动杆连接。
在本发明所述的调焦机构中，所述座体上还设置有与所述座体垂直的用于限制显示屏的移动距离的限位件。
在本发明所述的调焦机构中，所述限位件外套设有用于缓冲的弹簧。
本发明还公开了一种虚拟现实头盔，包括如上所述的调焦机构。
实施本发明的调焦机构以及包含该调焦机构的虚拟现实头盔，具有以下有益效果：本发明的调焦机构可以通过转动调节齿轮，带动传动齿轮组旋转，进而带动驱动齿轮旋转，驱动齿轮通过旋转实现驱动该座体伸缩，因为座体与显示屏连接，座体的伸缩最终导致显示屏的伸缩，从而实现移动显示屏以调节VR焦距。
附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1是本发明调焦机构的结构示意图；
图2是图1中的驱动齿轮的结构示意图。
具体实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图详细说明本发明的具体实施方式。
本发明公开了一种调焦机构以及包含该调焦机构的虚拟现实头盔，调焦机构用于驱动虚拟现实头盔中的显示屏伸缩移动以实现VR调焦。
参考图1是本发明调焦机构的结构示意图。
调焦机构包括位于显示屏端与显示屏固定设置的座体1以及设置在所述头盔两侧的调节齿轮4，所述座体1两侧分别设置有与用于通过旋转驱动所述座体1伸缩的驱动齿轮2，所述调节齿轮4在被用户拨动旋转时通过传动齿轮组3驱动所述驱动齿轮2旋转。
使用时，用户可直接拨动调节齿轮4，调节齿轮4带动传动齿轮组3旋转，进而带动驱动齿轮2旋转，驱动齿轮2通过旋转实现驱动所述座体1伸缩，因为座体1与显示屏连接，座体1的伸缩最终导致显示屏的伸缩移动，从而实现调节VR焦距。
一个具体的实施例中，座体1大致为一个矩形框，其前面与显示屏连接，其后面层叠设置一个开设了两个透光孔的透光件9。透光件9大致呈板状。大小与矩形框的中空区域相当。
所述驱动齿轮2设置在座体1的左右两侧，且驱动齿轮2的延伸方向与显示屏的出光方向平行，也即与座体1垂直。一般，驱动齿轮2的整体长度为10-50mm。
结合图2，所述驱动齿轮2包括同轴固定的位于端部的第一锥形齿轮21和与所述座体1螺纹连接的螺纹连接部22，即第一锥形齿轮21和螺纹连接部22的转动轴相同，都是平行于显示屏的出光方向，也即与座体1垂直。座体1 上开设有相应的螺纹孔，螺纹连接部22嵌设在所述螺纹孔内。本发明即是通过旋转第一锥形齿轮21使得螺纹连接部22旋转，而螺纹连接部22的旋转最终导致座体1的伸缩。
其中，螺纹连接部22的朝向座体1的一端是没有开设螺纹的，而是一个非螺纹结构的限位端23，其可以限制座体1在与显示屏出光方向相反的方向上的移动距离，也即限制显示屏在与其出光方向相反的方向上的移动距离。
优选的，为了限制显示屏在其出光方向上的移动距离，还可以在座体1的四个拐角处各垂直设置一个限位件6，即限位件6的延伸方向与驱动齿轮2相同，当座体1沿出光方向移动到一定距离后，限位件6会与头盔的其他部件抵持，进而实现限制显示屏的移动距离，更具体的说是限制显示屏在其出光方向上的移动距离。
进一步优选的，在各限位件6外分别套设一个弹簧7，弹簧7有助于实现缓冲。
继续参考图1，移动虚拟现实头盔的左右两侧各固定一个支撑架5，支撑架5位于驱动齿轮2下方。调节齿轮4固定在所述支撑架5上。
本实施例中，所述调节齿轮4包括一个滚轮41和与所述滚轮41同轴固定的第二锥形齿轮42，即滚轮41和第二锥形齿轮42的转动轴相同。具体的，滚轮41和第二锥形齿轮42的转动轴与座体1的安装驱动齿轮2的侧边平行。第二锥形齿轮42位于滚轮41的上方。
所述传动齿轮组3包括同轴固定的第三锥形齿轮31和第四锥形齿轮32，即第三锥形齿轮31和第四锥形齿轮32的转动轴相同，具体的，第三锥形齿轮31和第四锥形齿轮32的转动轴与座体1的安装驱动齿轮2的侧边垂于且与座体所在平面平行。也即，第三锥形齿轮31和第四锥形齿轮32的转动轴与第一 锥形齿轮21的转动轴以及第二锥形齿轮42的转动轴两两垂直。其中，第三锥形齿轮31与第一锥形齿轮21啮合，第四锥形齿轮32与第二锥形齿轮42啮合。
由于座体1的左右两侧均设置有调节齿轮4、传动齿轮组3、驱动齿轮2，理论上可以分别调节两侧的调节齿轮4实现调节VR焦距。但是为了避免调节时候的不同步不一致，优选的，两侧的所述传动齿轮组3通过一根连动杆8连接。如图1中所示，连动杆8两端分别串接一传动齿轮组3，这样用户只需调节一侧的调节齿轮4即可，而且可以保证调节同步，使显示屏平稳伸缩。此时需要注意，考虑到用户同时拨动两侧的滚轮41时，两侧的滚轮41旋转方向相反，为了使两侧的螺纹连接部22的旋转方向必须一致，本实施例中两侧第四锥形齿轮32的锥面朝向相反，且两侧的第三锥形齿轮31的锥面朝向是相同的。
下面结合上述具体实施例简单介绍本是发明的工作原理：
调焦时，拨动滚轮41，滚轮41与第二锥形齿轮42同轴固定，所以第二锥形齿轮42也随着转动，第二锥形齿轮42的转动带动与其啮合的第四锥形齿轮32转动，第四锥形齿轮32与第三锥形齿轮31同轴固定，所以第三锥形齿轮31随着转动，第三锥形齿轮31的转动驱动与其啮合的第一锥形齿轮21转动，第一锥形齿轮21与螺纹连接部22同轴固定，所以螺纹连接部22旋转，因螺纹连接部22与座体1是螺纹连接，所以导致座体1伸缩，座体1伸缩带动显示屏的伸缩，如此实现调节VR焦距。
综上所述，实施本发明的调焦机构以及包含该调焦机构的虚拟现实头盔，具有以下有益效果：本发明的调焦机构可以通过转动调节齿轮，带动传动齿轮组旋转，进而带动驱动齿轮旋转，驱动齿轮通过旋转实现驱动该座体伸缩，因为座体与显示屏连接，座体的伸缩最终导致显示屏的伸缩，从而实现移动显示 屏以调节VR焦距。
上面结合附图对本发明的实施例进行了描述，但是本发明并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本发明的启示下，在不脱离本发明宗旨和权利要求所保护的范围情况下，还可做出很多形式，这些均属于本发明的保护之内。

Claims (7)

  1. 一种调焦机构，用于驱动虚拟现实头盔中的显示屏伸缩移动以实现调焦，其特征在于，包括位于显示屏端与显示屏固定设置的座体(1)以及设置于所述头盔两侧的调节齿轮(4)，所述座体(1)两侧分别设置有用于通过旋转驱动所述座体(1)伸缩的驱动齿轮(2)；所述调节齿轮(4)在被用户拨动旋转时通过设置于所述头盔两侧的传动齿轮组(3)驱动所述驱动齿轮(2)旋转；
    其中，所述驱动齿轮(2)包括同轴固定的第一锥形齿轮(21)和与所述座体(1)螺纹连接的螺纹连接部(22)；所述调节齿轮(4)包括一个滚轮(41)和与所述滚轮(41)同轴固定的第二锥形齿轮(42)；所述传动齿轮组(3)包括同轴固定的第三锥形齿轮(31)和第四锥形齿轮(32)，第三锥形齿轮(31)与第一锥形齿轮(21)啮合，第四锥形齿轮(32)与第二锥形齿轮(42)啮合。
  2. 根据权利要求1所述的调焦机构，其特征在于，所述第一锥形齿轮(21)的转动轴、第三锥形齿轮(31)和第四锥形齿轮(32)的转动轴、第二锥形齿轮(42)的转动轴两两垂直，且所述第一锥形齿轮(21)的转动轴垂直于所述座体(1)，所述第二锥形齿轮(42)的转动轴与所述座体(1)的设置所述驱动齿轮(2)的侧边平行。
  3. 根据权利要求1所述的调焦机构，其特征在于，所述驱动齿轮(2)包括一个用于限制所述座体(1)的移动距离的限位端(23)。
  4. 根据权利要求1所述的调焦机构，其特征在于，两侧的所述传动齿轮组(3)通过一根连动杆(8)连接。
  5. 根据权利要求1所述的调焦机构，其特征在于，所述座体(1)上还设 置有与所述座体(1)垂直的用于限制显示屏的移动距离的限位件(6)。
  6. 根据权利要求5所述的调焦机构，其特征在于，所述限位件(6)外套设有用于缓冲的弹簧(7)。
  7. 一种虚拟现实头盔，其特征在于，包括如权利要求1-6任一项所述的调焦机构。
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