WO2018228116A1 - 物距调节装置和虚拟现实设备 - Google Patents

物距调节装置和虚拟现实设备 Download PDF

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Publication number
WO2018228116A1
WO2018228116A1 PCT/CN2018/086854 CN2018086854W WO2018228116A1 WO 2018228116 A1 WO2018228116 A1 WO 2018228116A1 CN 2018086854 W CN2018086854 W CN 2018086854W WO 2018228116 A1 WO2018228116 A1 WO 2018228116A1
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WO
WIPO (PCT)
Prior art keywords
adjusting mechanism
adjusting
rotate
spur gear
gear
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PCT/CN2018/086854
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English (en)
French (fr)
Inventor
马占山
田文红
陈丽莉
张�浩
陈东
孙志宇
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
Priority date (The priority date 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 date listed.)
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Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/328,026 priority Critical patent/US10921601B2/en
Publication of WO2018228116A1 publication Critical patent/WO2018228116A1/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
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • 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
    • G02B27/0149—Head-up displays characterised by mechanical features
    • G02B2027/0154—Head-up displays characterised by mechanical features with movable elements
    • 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
    • G02B27/0149—Head-up displays characterised by mechanical features
    • G02B2027/0154—Head-up displays characterised by mechanical features with movable elements
    • G02B2027/0159—Head-up displays characterised by mechanical features with movable elements with mechanical means other than scaning means for positioning the whole image
    • 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
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • G02B2027/0185—Displaying image at variable distance

Definitions

  • the present disclosure relates to the field of smart wear technology, and more particularly to an object distance adjustment device and a virtual reality device.
  • Virtual reality technology has gradually developed, and virtual reality head-mounted display devices are increasingly entering people's lives.
  • the mainstream head-mounted display devices fall into two categories:
  • the object distance is not adjustable, that is, the distance between the lens and the display screen is fixed.
  • Such equipment requires the user to wear myopia glasses to correct the vision before use.
  • the exit distance of such equipment will be designed on a normal basis.
  • the thickness space of the myopic lens is reserved, which results in a large distance of the exit pupil. In actual use, a part of the angle of view is sacrificed, and the feeling of the lens barrel, the reflection of the lens, and the dispersion of the dispersion are also brought about;
  • the object distance is adjustable, by adjusting the position of the display screen to achieve the object distance adjustment, and then adapt to users of different degrees of myopia
  • the adjustment mechanism is mainly divided into two categories:
  • Bevel gear combination thread pair through one or more sets of bevel gears to drive the screw to rotate, push the nut to move linearly, thereby driving the display to move back and forth.
  • this adjustment mechanism has an effective self-locking structure, it lacks available bevel gears. Standard parts lead to high production costs, and the transmission is relatively small and the adjustment flexibility is poor.
  • the purpose of the present disclosure is to provide an object distance adjusting device and a virtual reality device to solve the problem of high manufacturing cost and poor adjustment flexibility.
  • the present disclosure provides an object distance adjusting device including a first adjusting mechanism, a second adjusting mechanism, and a third adjusting mechanism, the first adjusting mechanism and the second adjusting mechanism Engaging, the second adjusting mechanism is engaged with the third adjusting mechanism, and the rotation of the first adjusting mechanism drives the second adjusting mechanism to rotate, and then drives the third adjusting mechanism to rotate.
  • the first adjustment mechanism includes a first shaft and a first crown gear at both ends of the first shaft, the first crown gear meshing with the second adjustment mechanism.
  • the first adjustment mechanism further includes a first spur gear and a second crown gear, the first shaft passes through the first spur gear, and the second crown gear and the first spur gear Engagement, the rotation of the second crown gear drives the first spur gear to rotate, and then the first shaft and the first crown gear are rotated.
  • the first adjustment mechanism further includes a knob, one side surface of the knob is fixedly coupled to a planar side of the second crown gear, and the knob is configured to drive the second crown gear to rotate .
  • the second adjustment mechanism includes a second rotating shaft and a second spur gear on the second rotating shaft, the second spur gear simultaneously meshes with the first adjusting mechanism, and the third adjustment The mechanism is engaged, the first adjusting mechanism drives the second spur gear to rotate, and the rotation of the second spur gear drives the second rotating shaft and the third adjusting mechanism to rotate.
  • the second adjustment mechanism further includes a third spur gear on the second rotating shaft, the third spur gear meshes with a third adjusting mechanism, and the second rotating shaft rotates The third spur gear is driven to rotate, and then the third adjusting mechanism is driven to rotate.
  • the third adjustment mechanism includes a third crown gear and a screw, one end of the screw being fixedly coupled to a planar side of the third crown gear, the third crown gear and the second adjustment mechanism Engage.
  • the number of the second adjustment mechanisms is two, and the number of the third adjustment mechanisms is four, and the third adjustment mechanisms are respectively engaged at both ends of the second adjustment mechanism.
  • the present disclosure also provides a virtual reality device, including the object distance adjusting device in any of the above embodiments.
  • the virtual reality device further includes a display screen holder and a nut fixed to the display screen holder, the display screen holder for fixing the display screen, the nut and the The three adjustment mechanism is screwed.
  • the object distance adjusting device and the virtual reality device provided by the embodiment of the present disclosure drive the second adjusting mechanism to rotate by the first adjusting mechanism, and then drive the third adjusting mechanism to rotate, so that the object to be adjusted connected to the third adjusting mechanism (for example, the display)
  • the screen mount moves to adjust the object distance (such as the distance between the display and the lens). Since there are more mature crown gear standard parts and spur gear standard parts, the space selection can be selected in the part selection and transmission ratio design, which improves the adjustment flexibility and reduces the production cost. Moreover, since these adjustment mechanisms have no complicated structure, the combination of the spur gear and the crown gear is smaller than the bevel gear combination, which can save space.
  • FIG. 1 is a perspective view of an object distance adjusting device according to an embodiment of the present disclosure
  • Figure 2 is a front elevational view of the object distance adjusting device according to an embodiment of the present disclosure
  • FIG. 3 is a perspective view of an object distance adjusting device according to another embodiment of the present disclosure.
  • FIG. 4 is a front elevational view of an object distance adjusting device according to another embodiment of the present disclosure.
  • FIG. 5 is an exploded view of a virtual reality device according to an embodiment of the present disclosure.
  • FIG. 6 is a front view of a virtual reality device according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a virtual reality device before moving on a display screen holder according to an embodiment of the present disclosure
  • FIG. 8 is a schematic structural diagram of a virtual reality device after moving on a display screen holder according to an embodiment of the present disclosure.
  • the object distance adjusting device includes a first adjustment mechanism 1, a second adjustment mechanism 2, and a third adjustment mechanism 3, the first adjustment mechanism 1 meshing with the second adjustment mechanism 2,
  • the second adjusting mechanism 2 is engaged with the third adjusting mechanism 3, and the rotation of the first adjusting mechanism 1 drives the second adjusting mechanism 2 to rotate, which in turn drives the third adjusting mechanism 3 to rotate.
  • the present disclosure provides that the object distance adjustment device drives the second adjustment mechanism to rotate by the first adjustment mechanism, and then drives the third adjustment mechanism to rotate, so that the object to be adjusted (such as the display screen holder) connected to the third adjustment mechanism moves. , thereby adjusting the object distance (such as the distance between the display screen and the lens).
  • the first adjustment mechanism 1 includes a first rotating shaft 11 and a first crown gear 12 at both ends of the first rotating shaft 11, the first crown gear 12 and the second adjusting mechanism 2 Engage.
  • the embodiment of the present disclosure drives the second adjusting mechanism to rotate by using the combination of the first crown gear and the first rotating shaft, and then drives the third adjusting mechanism to rotate, so that the object to be adjusted connected to the third adjusting mechanism moves, thereby adjusting the object. distance. Since there are more mature crown gear standard parts, there is a large space available for part selection and transmission ratio design, which improves the adjustment flexibility and reduces the production cost. Moreover, since the first adjustment mechanism has no complicated structure, the combination of the spur gear and the crown gear is smaller than the bevel gear combination, which can save space.
  • the first adjustment mechanism 1 may further include a first spur gear 13 and a second crown gear 14, the first rotating shaft 11 passing through the first spur gear 13, the second The crown gear 14 meshes with the first spur gear 13 . Therefore, the rotation of the second crown gear 14 can drive the first spur gear 13 to rotate, and then the first rotating shaft 11 and the first crown gear 12 are rotated.
  • the second adjusting mechanism and the third adjusting mechanism can be further rotated to move the object to be adjusted connected to the third adjusting mechanism.
  • the first spur gear 13 is located at an intermediate portion of the first rotating shaft 11 to stably drive the first rotation and the first crown gears at both ends of the first rotation to rotate simultaneously.
  • the embodiment of the present disclosure drives the rotation of the first shaft and the first crown gear by using a combination of the crown gear and the spur gear, and then drives the second adjustment mechanism that meshes with the first crown gear to rotate. Since there are more mature standard parts of crown gears and spur gears, the choice of parts and transmission ratio can be larger, which improves the adjustment flexibility and reduces the production cost.
  • the combination of spur gears and crown gears is more bevel gears. The combined size is smaller and therefore more space efficient.
  • by using the first spur gear and the second crown gear it is convenient to drive the first rotating shaft to rotate, so that the user can conveniently drive the first adjusting mechanism to rotate by rotating the second crown gear.
  • the first adjustment mechanism 1 may further include a knob 15 , one side surface of the knob 15 is fixedly connected with the second, planar side of the crown gear 14 , and the knob 15 is used for driving The second crown gear 14 rotates, so that the user can rotate the second crown gear by rotating the knob, thereby improving the convenience of rotation.
  • the knob 15 is preferably a shape that is convenient for the user to hold, for example, a cylindrical shape, an ellipsoidal shape, or the like, or any other irregular shape, as long as the user can conveniently hold and rotate.
  • the knob 15 is cylindrical and has a diameter larger than the diameter of the second crown gear 14 to facilitate rotation of the knob by the user.
  • the center point of the knob 15 coincides with the center point of the second crown gear 14, and when the knob 15 rotates, the center points of the two are always coincident, and when the knob drives the second crown gear to rotate, it can be guaranteed
  • the first adjustment mechanism can be stably rotated without offset.
  • the second adjustment mechanism 2 may include a second rotating shaft 21 and a second spur gear 22 on the second rotating shaft 21, the second The spur gear is meshed with the first adjusting mechanism and the third adjusting mechanism is engaged.
  • the first adjusting mechanism drives the second spur gear to rotate, and the rotation of the second spur gear drives the second rotating shaft and the third adjusting mechanism to rotate.
  • the gear near the one end surface of the second spur gear 22 meshes with the first adjusting mechanism 1, and the gear near the other end surface meshes with the third adjusting mechanism 3, then when the first adjusting mechanism drives the second spur gear When rotating, the rotation of the second spur gear itself can drive the third adjustment mechanism to rotate.
  • the embodiment of the present disclosure drives the third adjusting mechanism to rotate by using the combination of the second spur gear and the second rotating shaft, so that the object to be adjusted connected to the third adjusting mechanism moves, thereby adjusting the object distance.
  • the second spur gear 22 of the second adjustment mechanism 2 can mesh with the first crown gear 12 of the first adjustment mechanism 1 to engage the first adjustment mechanism 1 and the second adjustment mechanism 2 .
  • the second adjustment mechanism 2 may further include a third spur gear 23 on the second rotating shaft 21, and the third spur gear 23 meshes with the third adjusting mechanism 3,
  • the rotation of the second spur gear 22 drives the second rotation 21 to rotate, and the rotation of the second rotation shaft 21 drives the third spur gear 23 to rotate, which in turn drives the third adjustment mechanism 3 to rotate.
  • the second spur gear 22 and the third spur gear 23 are respectively located at two ends of the second rotation 21, and the second spur gear 22 and the third spur gear 23 are respectively engaged with the third adjustment mechanism 3, then
  • the second adjusting mechanism can simultaneously rotate the plurality of third adjusting mechanisms to ensure stable movement of the object to be adjusted connected to the third adjusting mechanism.
  • the third adjustment mechanism 3 may include a third crown gear 31 and a screw 32, one end of the screw 32 being fixedly coupled to a planar side of the third crown gear 31, the third crown The gear 31 meshes with the second adjustment mechanism 2.
  • Embodiments of the present disclosure adjust the object distance by using a combination of a crown gear and a screw, the rotation of the screw causes the object to be adjusted connected to the third adjustment mechanism to move. Since there are more mature crown gear standard parts, the choice of parts can be larger in the part selection and transmission ratio design, which improves the adjustment flexibility and reduces the production cost, and the third adjustment mechanism is smaller and can be more save space.
  • the second spur gear 22 of the second adjustment mechanism 2 can mesh with the third crown gear 31 of the third adjustment mechanism 3 to engage the second adjustment mechanism 2 and the third adjustment mechanism 3 .
  • the third spur gear 23 of the second adjustment mechanism 2 can also mesh with the third crown gear 31 of the third adjustment mechanism 3, thereby causing the second adjustment mechanism 2 and the third adjustment mechanism 3 Engage.
  • the number of the third adjustment mechanisms 3 may be plural, and the third adjustment mechanisms 3 may be symmetrically distributed, so that the third adjustment mechanism can be symmetrically connected to the object to be adjusted.
  • the number of the second adjustment mechanisms 2 is two
  • the number of the third adjustment mechanisms 3 is four
  • the third adjustment mechanism 3 is respectively engaged with the second adjustment mechanism 3 Both ends. That is, the second spur gear 22 and the third spur gear 23 are fixed to both ends of the second rotating shaft 21, and the second spur gear 22 and the third spur gear 23 are both meshed with the third crown gear 31 of the third adjusting mechanism 3.
  • the four third adjustment mechanisms can ensure a smooth overall translation of the object to be adjusted connected to the third adjustment mechanism.
  • the number of the third adjusting mechanisms 3 may be six. In this case, it is necessary to provide two third spur gears 23 on each of the second rotating shafts 21, and each of the second rotating shafts 21 At the same time, the two third spur gears 23 are rotated to drive the third adjusting mechanism 3 engaged with the third spur gear 23 to rotate at the same time.
  • the number of the third adjustment mechanisms 3 may be eight, ten, or the like.
  • the present disclosure also provides a virtual reality device, including the object distance adjusting device in any of the above embodiments.
  • the second adjusting mechanism can be rotated by the first adjusting mechanism, and then the third adjusting mechanism is rotated to move the object to be adjusted connected to the third adjusting mechanism to adjust the object distance.
  • the virtual reality device 6 further includes a display screen holder 4 and a nut 41 fixed to the display screen holder, the display screen holder 4
  • the nut 41 is screwed to the third adjustment mechanism 3.
  • the screw connection between the display screen 4 and the third adjustment mechanism 3 can be realized by the display holder and the nut, and can also function as a moving display screen.
  • the screw angle can be self-locking, the display holder can be prevented from being moved by an external force.
  • the screw 32 in the third adjustment mechanism 3 can be screwed to the nut 41 to screw the display screen holder (to be adjusted) and the third adjustment mechanism.
  • four corners of the display fixing frame 4 are respectively provided with a nut 41.
  • the four nuts 41 are symmetrically distributed on the display fixing frame 4, and are respectively screwed with the third adjusting mechanism 3.
  • the first crown gear 12 at both ends of the first rotating shaft 11 is rotated by the rotation of the first rotating shaft 11, and the rotation of the first crown gear 12 drives the second spur gear 22 to rotate.
  • the rotation of the second spur gear 22 drives the third crown gear 31 to rotate, and the rotation of the second spur gear 22 drives the second shaft 21 to rotate.
  • the rotation of the second shaft 21 drives the second shaft.
  • the second spur gear 22 on the 21 rotates, and the rotation of the second spur gear 22 drives the lower third crown gear 31 to rotate.
  • the rotation of the third crown gear 31 drives the screw 32 to rotate, the rotation of the screw 32 changes the screwing depth between the screw 32 and the nut 41, and the display fixing frame 4 moves accordingly, thereby changing the display screen and The distance between the lenses 5.
  • the distance between the display screen and the lens can be adjusted through the screw connection between the display fixing frame and the third adjusting mechanism, thereby realizing the adjustment of the diopter to adapt to users of different degrees of myopia, and the user is using the product. There is no need to wear myopia glasses during the process.
  • the object distance adjusting device and the virtual reality device drive the second adjusting mechanism to rotate by the first adjusting mechanism, and then drive the third adjusting mechanism to rotate, so that the third adjusting mechanism is connected to be adjusted.
  • the object (such as the display holder) moves to adjust the object distance (such as the distance between the display and the lens). Since there are more mature crown gear standard parts and spur gear standard parts, the space selection can be selected in the part selection and transmission ratio design, which improves the adjustment flexibility and reduces the production cost. Moreover, since these adjustment mechanisms have no complicated structure, the combination of the spur gear and the crown gear is smaller than the bevel gear combination, which can save space.

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Abstract

一种物距调节装置，包括第一调节机构、第二调节机构和第三调节机构，所述第一调节机构与第二调节机构啮合，所述第二调节机构与第三调节机构啮合，所述第一调节机构的转动带动所述第二调节机构转动，继而带动所述第三调节机构转动，使得与所述第三调节机构连接的待调节物移动，从而调节物距。还公开了一种虚拟现实设备，包括物距调节装置。

Description

物距调节装置和虚拟现实设备
相关申请的交叉引用
本申请要求于2017年6月13日递交中国专利局的、申请号为201710442061.7的中国专利申请的权益，该申请的全部公开内容以引用方式并入本文。
技术领域
本公开涉及智能穿戴技术领域，特别是指一种物距调节装置和虚拟现实设备。
背景技术
虚拟现实技术逐渐发展，虚拟现实头戴显示设备越来越多地走进人们的生活，主流的头戴显示设备分为两类：
1、物距不可调式，即镜片与显示屏之间的距离固定，此类设备需用户佩戴近视眼镜矫正视力后方可使用，由于需近视眼镜，此类设备的出瞳距离会在正常基础上设计预留近视镜片的厚度空间，导致出瞳距离偏大，在实际使用时，牺牲了一部分视场角，同时还带来镜筒感、镜片反光、色散加重等不良感受；
2、物距可调式，通过调节显示屏的位置，实现物距调节，进而适配不同程度近视的用户，调节机构主要分为两类：
1)齿轮齿条副，即通过齿轮与齿条啮合，依靠齿轮的转动，推动齿条直线运动，从而带动显示屏先后移动，这种调节机构的缺点是缺少自锁能力，屏幕位置容易移动，需反复调整；
2)锥齿轮组合螺纹副，通过一组或多组锥齿轮带动螺杆旋转，推动螺母 进行直线运动，从而带动显示屏前后移动，这种调节机构虽然有效的自锁结构，但是缺少可用的锥齿轮标准件，导致制作成本偏高，而且传动比较小、调节灵活性较差。
发明内容
有鉴于此，本公开的目的在于提出一种物距调节装置和虚拟现实设备，以解决制作成本偏高、调节灵活性差的问题。
基于上述目的，在本公开的第一方面，本公开提供了一种物距调节装置，包括第一调节机构、第二调节机构和第三调节机构，所述第一调节机构与第二调节机构啮合，所述第二调节机构与第三调节机构啮合，所述第一调节机构的转动带动所述第二调节机构转动，继而带动所述第三调节机构转动。
在本公开的一些实施例中，所述第一调节机构包括第一转轴和位于所述第一转轴两端的第一冠齿轮，所述第一冠齿轮与第二调节机构啮合。
在本公开的一些实施例中，所述第一调节机构还包括第一直齿轮和第二冠齿轮，所述第一转轴穿过第一直齿轮，所述第二冠齿轮与第一直齿轮啮合，所述第二冠齿轮的转动带动所述第一直齿轮转动，继而带动所述第一转轴和第一冠齿轮转动。
在本公开的一些实施例中，所述第一调节机构还包括旋钮，所述旋钮的一侧表面与第二冠齿轮的平面侧固定连接，所述旋钮用于带动所述第二冠齿轮转动。
在本公开的一些实施例中，所述第二调节机构包括第二转轴和位于所述第二转轴上的第二直齿轮，所述第二直齿轮同时与第一调节机构啮合、第三调节机构啮合，所述第一调节机构带动第二直齿轮转动，所述第二直齿轮的转动带动第二转轴和第三调节机构转动。
在本公开的一些实施例中，所述第二调节机构还包括位于所述第二转轴上 的第三直齿轮，所述第三直齿轮与第三调节机构啮合，所述第二转轴的转动带动第三直齿轮转动，继而带动所述第三调节机构转动。
在本公开的一些实施例中，所述第三调节机构包括第三冠齿轮和螺杆，所述螺杆的一端与第三冠齿轮的平面侧固定连接，所述第三冠齿轮与第二调节机构啮合。
在本公开的一些实施例中，所述第二调节机构的数量为两个，所述第三调节机构的数量为四个，所述第三调节机构分别啮合在第二调节机构的两端。
在本公开的第二方面，本公开还提供了一种虚拟现实设备，包括上述任意一个实施例中的物距调节装置。
在本公开的一些实施例中，所述虚拟现实设备还包括显示屏固定架和固定在所述显示屏固定架上的螺母，所述显示屏固定架用于固定显示屏，所述螺母与第三调节机构螺接。
本公开实施例提供的物距调节装置和虚拟现实设备通过第一调节机构带动第二调节机构转动，继而带动第三调节机构转动，使得与所述第三调节机构连接的待调节物(例如显示屏固定架)移动，从而调节物距(例如显示屏与透镜之间的距离)。由于目前有较成熟的冠齿轮标准件和直齿轮标准件，所以在零件选型及传动比设计上可选择空间较大，提高了调节灵活性，降低了制作成本。而且由于这些调节机构没有复杂的结构，直齿轮与冠齿轮组合较锥齿轮组合体积更小，可以更加节省空间。
附图说明
图1为本公开一个实施例的物距调节装置的立体图；
图2为本公开一个实施例的物距调节装置的主视图；
图3为本公开另一个实施例的物距调节装置的立体图；
图4为本公开另一个实施例的物距调节装置的主视图；
图5为本公开实施例的虚拟现实设备的分解图；
图6为本公开实施例的虚拟现实设备的主视图；
图7为本公开实施例的虚拟现实设备在显示屏固定架移动前的结构示意图；
图8为本公开实施例的虚拟现实设备在显示屏固定架移动后的结构示意图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚明白，以下结合具体实施例，并参照附图，对本公开进一步详细说明。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”、“一”或者“该”等类似词语也不表示数量限制，而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。
如图1和图2所示，分别为本公开一个实施例的物距调节装置的立体图和主视图。作为本公开的一个实施例，所述物距调节装置包括第一调节机构1、第二调节机构2和第三调节机构3，所述第一调节机构1与第二调节机构2啮合，所述第二调节机构2与第三调节机构3啮合，所述第一调节机构1的转动带动所述第二调节机构2转动，继而带动所述第三调节机构3转动。可见，本公开提供物距调节装置通过第一调节机构带动第二调节机构转动，继而带动第三调节机构转动，使得与所述第三调节机构连接的待调节物(例如显示屏固定架)移动，从而调节物距(例如显示屏与透镜之间的距离)。
作为本公开的又一个实施例，所述第一调节机构1包括第一转轴11和位 于所述第一转轴11两端的第一冠齿轮12，所述第一冠齿轮12与第二调节机构2啮合。本公开实施例通过使用第一冠齿轮和第一转轴的组合，带动第二调节机构转动，继而带动第三调节机构转动，使得与所述第三调节机构连接的待调节物移动，从而调节物距。由于目前有较成熟的冠齿轮标准件，所以在零件选型及传动比设计上可选择空间较大，提高了调节灵活性，降低了制作成本。而且由于第一调节机构没有复杂的结构，直齿轮与冠齿轮组合较锥齿轮组合体积更小，可以更加节省空间。
作为本公开的再一个实施例，所述第一调节机构1还可以进一步包括第一直齿轮13和第二冠齿轮14，所述第一转轴11穿过第一直齿轮13，所述第二冠齿轮14与第一直齿轮13啮合，因此，所述第二冠齿轮14的转动可以带动所述第一直齿轮13转动，继而带动所述第一转轴11和第一冠齿轮12转动。相应地，还可以继续带动第二调节机构、第三调节机构转动，从而使得与所述第三调节机构连接的待调节物移动。可选地，所述第一直齿轮13位于第一转轴11的中间部分，以稳定地带动第一转动以及第一转动两端的第一冠齿轮同时转动。
同样地，本公开实施例通过使用冠齿轮和直齿轮的组合，带动第一转轴和第一冠齿轮转动，继而带动与第一冠齿轮啮合的第二调节机构转动。由于目前有较成熟的冠齿轮及直齿轮标准件，所以在零件选型及传动比设计上可选择空间较大，提高了调节灵活性，降低了制作成本，直齿轮与冠齿轮组合较锥齿轮组合体积更小，因此更加节省空间。而且，通过采用第一直齿轮和第二冠齿轮，便于带动第一转轴转动，使得使用者可以方便地通过转动第二冠齿轮而驱动第一调节机构转动。
如图3和4所示，分别为本公开另一个实施例的物距调节装置的立体图和主视图。作为本公开的又一个实施例，所述第一调节机构1还可以包括旋钮15，所述旋钮15的一侧表面与第二，冠齿轮14的平面侧固定连接，所述旋钮15用于带动所述第二冠齿轮14转动，便于使用者通过旋转旋钮来旋转第二冠齿 轮，从而提高旋转的便利性。所述旋钮15最好是便于使用者握住的形状，例如可以是圆柱形、椭球形等，也可以是其他任何不规则形状，只要能够让使用者方便地握住并方便旋转即可。优选地，所述旋钮15为圆柱形，其直径大于第二冠齿轮14的直径，以便于使用者旋转旋钮。优选地，所述旋钮15的中心点与第二冠齿轮14的中心点重合，并且当旋钮15旋转时，两者的中心点始终保持重合，那么当旋钮带动第二冠齿轮转动时，可以保证第一调节机构可以稳定地转动，而不会发生偏移。
在本公开的一些实施例中，如图1和2所示，所述第二调节机构2可以包括第二转轴21和位于所述第二转轴21上的第二直齿轮22，所述第二直齿轮同时与第一调节机构啮合、第三调节机构啮合，所述第一调节机构带动第二直齿轮转动，所述第二直齿轮的转动带动第二转轴和第三调节机构转动。可选地，所述第二直齿轮22的一个端面附近的齿轮与第一调节机构1啮合，另一个端面附近的齿轮与第三调节机构3啮合，那么当第一调节机构带动第二直齿轮转动时，所述第二直齿轮自身的转动就可以带动第三调节机构转动。可见，本公开实施例通过使用第二直齿轮和第二转轴的组合，带动第三调节机构转动，使得与所述第三调节机构连接的待调节物移动，从而调节物距。在一些实施例中，所述第二调节机构2中的第二直齿轮22可以与第一调节机构1中的第一冠齿轮12啮合，从而使第一调节机构1和第二调节机构2啮合。
作为本公开的再一个实施例，所述第二调节机构2还可以进一步包括位于所述第二转轴21上的第三直齿轮23，所述第三直齿轮23与第三调节机构3啮合，所述第二直齿轮22的转动带动第二转动21转动，所述第二转轴21的转动带动第三直齿轮23转动，继而带动所述第三调节机构3转动。可选地，所述第二直齿轮22、第三直齿轮23分别位于第二转动21的两端，所述第二直齿轮22、第三直齿轮23分别啮合有第三调节机构3，那么第二调节机构可以同时带动多个第三调节机构转动，保证稳定地移动与第三调节机构连接的待调节物。
作为本公开的又一个实施例，所述第三调节机构3可以包括第三冠齿轮31和螺杆32，所述螺杆32的一端与第三冠齿轮31的平面侧固定连接，所述第三冠齿轮31与第二调节机构2啮合。本公开实施例通过使用冠齿轮和螺杆的组合，螺杆的转动使得与所述第三调节机构连接的待调节物移动，从而调节物距。由于目前有较成熟的冠齿轮标准件，所以在零件选型及传动比设计上可选择空间较大，提高了调节灵活性，降低了制作成本，而且第三调节机构的体积更小，可以更加节省空间。在一些实施例中，所述第二调节机构2中的第二直齿轮22可以与第三调节机构3中的第三冠齿轮31啮合，从而使第二调节机构2和第三调节机构3啮合。在一些实施例中，所述第二调节机构2中的第三直齿轮23也可以与第三调节机构3中的第三冠齿轮31啮合，从而使第二调节机构2和第三调节机构3啮合。可选地，所述第三调节机构3的数量可以为多个，这些第三调节机构3可以对称分布，从而使第三调节机构可以对称地与待调节物连接。
在本公开的一些实施例中，所述第二调节机构2的数量为两个，所述第三调节机构3的数量为四个，所述第三调节机构3分别啮合在第二调节机构3的两端。即第二转轴21的两端分别固定有第二直齿轮22、第三直齿轮23，第二直齿轮22、第三直齿轮23均与第三调节机构3中的第三冠齿轮31啮合。四个第三调节机构可以保证平稳地整体平移与所述第三调节机构连接的待调节物。
需要说明的是，所述第三调节机构3的数量可以为六个，在这种情况下，则需要在每根第二转轴21上设置两个第三直齿轮23，每根第二转轴21同时带动两个第三直齿轮23转动，从而带动与第三直齿轮23啮合的第三调节机构3同时转动。所述第三调节机构3的数量可以为八个，十个等。
本公开还提供了一种虚拟现实设备，包括上述任意一个实施例中的物距调节装置。可以通过第一调节机构带动第二调节机构转动，继而带动第三调节机构转动，使得与所述第三调节机构连接的待调节物移动，从而调节物距。
作为本公开的一个实施例，如图5和6所示，所述虚拟现实设备6还包括 显示屏固定架4和固定在所述显示屏固定架上的螺母41，所述显示屏固定架4用于固定显示屏，所述螺母41与第三调节机构3螺接。在该实施例中，可以通过显示屏固定架和螺母实现显示屏4与第三调节机构3之间的螺接，同样可以起到移动显示屏的作用。而且，由于螺纹升角可实现自锁，可防止显示屏固定架受外力移动。在一些实施例中，所述第三调节机构3中的螺杆32可以与螺母41螺接，从而使显示屏固定架(待调节物)和第三调节机构螺接。可选地，所述显示屏固定架4的四个角落分别设置有一个螺母41，四个螺母41对称分布在显示屏固定架4上，并分别与第三调节机构3螺接。
如图7和8所示，通过第一转轴11的转动带动位于所述第一转轴11两端的第一冠齿轮12转动，所述第一冠齿轮12的转动带动第二直齿轮22转动，所述第二直齿轮22的转动带动上方的第三冠齿轮31转动，同时所述第二直齿轮22的转动带动第二转轴21转动，所述第二转轴21的转动带动位于所述第二转轴21上的第二直齿轮22转动，所述第二直齿轮22的转动带动下方的第三冠齿轮31转动。进一步地，所述第三冠齿轮31的转动带动螺杆32转动，所述螺杆32的转动改变螺杆32与螺母41之间的螺接深度，显示屏固定架4随之移动，从而改变显示屏与透镜5之间的距离。因此，可以通过显示屏固定架与第三调节机构之间的螺接，调节显示屏与透镜之间的距离，实现对屈光度的调节，以适配不同程度近视的使用者，使用者在使用产品的过程中无需佩戴近视眼镜。
由此可见，本公开实施例提供的物距调节装置和虚拟现实设备通过第一调节机构带动第二调节机构转动，继而带动第三调节机构转动，使得与所述第三调节机构连接的待调节物(例如显示屏固定架)移动，从而调节物距(例如显示屏与透镜之间的距离)。由于目前有较成熟的冠齿轮标准件和直齿轮标准件，所以在零件选型及传动比设计上可选择空间较大，提高了调节灵活性，降低了制作成本。而且由于这些调节机构没有复杂的结构，直齿轮与冠齿轮组合较锥齿轮组合体积更小，可以更加节省空间。
所属领域的普通技术人员应当理解：以上任何实施例的讨论仅为示例性的，并非旨在暗示本公开的范围(包括权利要求)被限于这些例子；在本公开的思路下，以上实施例或者不同实施例中的技术特征之间也可以进行组合，并存在如上所述的本公开的不同方面的许多其它变化，为了简明它们没有在细节中提供。因此，凡在本公开的精神和原则之内，所做的任何省略、修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (10)

  1. 一种物距调节装置，包括第一调节机构、第二调节机构和第三调节机构，所述第一调节机构与第二调节机构啮合，所述第二调节机构与第三调节机构啮合，所述第一调节机构的转动带动所述第二调节机构转动，继而带动所述第三调节机构转动。
  2. 根据权利要求1所述的物距调节装置，其中，所述第一调节机构包括第一转轴和位于所述第一转轴两端的第一冠齿轮，所述第一冠齿轮与第二调节机构啮合。
  3. 根据权利要求2所述的物距调节装置，其中，所述第一调节机构还包括第一直齿轮和第二冠齿轮，所述第一转轴穿过第一直齿轮，所述第二冠齿轮与第一直齿轮啮合，所述第二冠齿轮的转动带动所述第一直齿轮转动，继而带动所述第一转轴和第一冠齿轮转动。
  4. 根据权利要求3所述的物距调节装置，其中，所述第一调节机构还包括旋钮，所述旋钮的一侧表面与第二冠齿轮的平面侧固定连接，所述旋钮用于带动所述第二冠齿轮转动。
  5. 根据权利要求1所述的物距调节装置，其中，所述第二调节机构包括第二转轴和位于所述第二转轴上的第二直齿轮，所述第二直齿轮同时与第一调节机构啮合、第三调节机构啮合，所述第一调节机构带动第二直齿轮转动，所述第二直齿轮的转动带动第二转轴和第三调节机构转动。
  6. 根据权利要求5所述的物距调节装置，其中，所述第二调节机构还包括位于所述第二转轴上的第三直齿轮，所述第三直齿轮与第三调节机构啮合，所述第二转轴的转动带动第三直齿轮转动，继而带动所述第三调节机构转动。
  7. 根据权利要求6所述的物距调节装置，其中，所述第三调节机构包括第三冠齿轮和螺杆，所述螺杆的一端与第三冠齿轮的平面侧固定连接，所述第三冠齿轮与第二调节机构啮合。
  8. 根据权利要求1所述的物距调节装置，其中，所述第二调节机构的数量为两个，所述第三调节机构的数量为四个，所述第三调节机构分别啮合在第二调节机构的两端。
  9. 一种虚拟现实设备，包括权利要求1-8中任意一项所述的物距调节装置。
  10. 根据权利要求9所述的虚拟现实设备，其中，还包括显示屏固定架和固定在所述显示屏固定架上的螺母，所述显示屏固定架用于固定显示屏，所述螺母与第三调节机构螺接。
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