English:
[0002] FIGURE 1 is a diagram of an electronic device employing an embodiment of an adjustable display member to advantage;
[0003] FIGURES 2A-2D are diagrams illustrating perspective views of the electronic device and adjustable display member of FIGURE 1 transitioning from the open position to the closed position;
[0004] FIGURE 3 is a diagram illustrating an embodiment of a hinge assembly of the adjustable display member of FIGURE 1 in a locked position;
[0006] FIGURES 5A-5C are additional diagrams illustrating the hinge assembly of FIGURES 3 and 4; and
[0007] FIGURES 6A-6C are diagrams illustrating a section view of a portion of the hinge assembly of FIGURES 5A-5C taken along the lines 6A— 6A of FIGURE 5A, 6B— 6B of FIGURE 5B and 6C— 6C of FIGURE 5C, respectively.
[0008] FIGURE 1 is a diagram of an electronic device 10 employing an embodiment of an adjustable display member 16 to advantage. In the embodiment illustrated in FIGURE 1 , electronic device 10 comprises a laptop or notebook computer 14; however, it should be understood that electronic device 10 may comprise any type of electronic device such as, but not limited to, a tablet personal computer or any other type of portable or non-portable electronic device. In the embodiment illustrated in FIGURE 1 , electronic device 10 comprises display member 16 rotatably coupled to a base member 18 via a hinge assembly 12. In FIGURE 1 , hinge assembly 12 comprises a hinge arm 20 having an end 20a pivotably coupled to display member 16 and an end 20b pivotally coupled to base member 18 to facilitate pivotable movement of hinge arm 20 relative to base member 18 and pivotable movement of display member 16 relative to hinge arm 20. For example, in the embodiment illustrated in FIGURE 1 , hinge assembly 12 facilitates pivotable movement of hinge arm 20 the directions of arrow 22 while also facilitating pivotable movement of display member 16 relative to hinge arm 20 in the directions of arrow 23. In operation, embodiments of hinge assembly 12 are configured to prevent pivotable movement of display member 16 and/or hinge arm 20 depending on the position(s) of display member 16 and/or hinge arm 20 to eliminate unwanted and/or damaging contact between display member 16 and base member 18.
[0009] FIGURES 2A-2D are diagrams illustrating perspective views of electronic device 10 of FIGURE 1 transitioning from an open position (FIGURE 2A) to a closed position (FIGURE 2D). In the embodiment illustrated in FIGURE 2A, hinge arm 20 is extended generally upright from base member 18 at an angle θi of approximately ninety degrees relative to base member 18, and display member 16 is rotated at an angle Φ of approximately forty-five degrees relative to hinge arm 20. In FIGURES 2A- 2D1hinge arm is rotatable through a range of angular positions extending from angle θi of approximately ninety degrees to an angle of approximately zero degrees relative to base member 18 (closed position illustrated in FIGURE 2D); however, it should be understood that the angular positions of hinge arm 20 relative to base member 16 may be varied. In FIGURES 2A-2D, display member 16 is rotatable through a range of angular positions extending from a position coplanar with hinge arm 20 (FIGURES 2C and 2D) to an angle Φ of approximately forty-five degrees (FIGURE 2B), however, it should be understood that display member 16 may be coupled to hinge arm 20 to facilitate positioning at other angular positions.
[0010] In operation, to position electronic device 10 in the closed position, hinge arm 20 is rotated in the direction of arrow 22a (FIGURE 2B) until hinge arm 20 is positioned at a predetermined angle Θ2where hinge assembly 12 is configured to automatically to prevent further pivotable movement of hinge arm 20 in the direction of arrow 22a until display member 16 is rotatably positioned relative to hinge arm 20 (FIGURE 2C) to prevent contact between display member 16 and a working surface 24 of base member 18. For example, if hinge arm 20 is further rotatable in the direction of arrow 22a to an angle less than Θ2while display member 16 is positioned at an angle Φ relative to hinge arm 20, a bottom wall 26 of display member 16 may contact and potentially damage display member 16 and/or base member 18. Embodiments of hinge assembly 12 are configured to limit the amount of pivotable movement of hinge arm 20 in the direction of arrow 22a until display member 16 is positioned to prevent such potential damage. In one embodiment, rotation of hinge arm 20 is restricted until angle Φ is approximately zero degrees or when display member 16 is generally coplanar with hinge arm 20. As used herein, a "closed position" of electronic device 10 shall mean when display member 16 is located in a position substantially parallel and/or coplanar with base member 18 such that display member 16 is disposed in contact with or directly adjacent to working surface 24 of electronic device 10 (FIGURE 1 ). Accordingly, hinge assembly 12 is operable to automatically prevent unwanted and/or potentially damaging contact between display member 16 and base member 18. In addition, hinge assembly 12 facilitates one-handed opening and closing of display member 16 relative to base member 18 such that the user is not required to manipulate and/or orient the screen with two hands while positioning display member 16 relative to base member 18.
[0011] FIGURE 3 is a diagram illustrating an embodiment of hinge assembly 12 of FIGURE 1 in the closed position employing a locking system 38 to advantage. In the embodiment illustrated in FIGURE 3, hinge assembly 12 comprises hinge arm 20 and a panel mount plate 40. In FIGURE 3, panel mount plate 40 is rotatably coupled to hinge arm 20 via hinges 52a and 52b to facilitate pivotable movement about an axis Ai. Hinge arm 20 is rotatably coupled to base member 18 (FIGURES 1 and 2A-2D) via a hinge system 46 to facilitate pivotable movement about an axis A2.
[0012] In the embodiment illustrated in FIGURE 3, locking system 38 is configured to resist pivotable movement of panel mount plate 40, and thus display member 16 (FIGURES 1-2D), relative to hinge arm 20 when hinge arm 20 is positioned at an angle equal to or less than angle Θ2(e.g. FIGURES 2B-2D). In the embodiment illustrated in FIGURE 3, locking system 38 comprises a hook 54 and an extension 56 disposed on panel mount plate 40, a slider plate 42, and a locking plate 58. In FIGURE 3, slider plate 42 and locking plate 58 are movable within an opening 44 of hinge arm 20. Locking plate 58 comprises a pair of extensions 60 and 62 extending within/through a pair of corresponding slots 64 and 66 on slider plate 42. In operation, locking system 38 is configured to facilitate pivotable movement of display member 16 relative to hinge arm 20 while hinge arm 20 is positioned between angles θi and Q2(FIGURES 1-2B).
[0013] In FIGURE 3, hinge arm 20 and offset slider plate 42 are pivotably coupled to base member 18 (FIGURES 1-2D) via a hinge system 46. In FIGURE 3, hinge system 46 facilitates pivotable movement of hinge arm 20 about axis A2, and pivotable movement of slider plate 42 about an axis A3. In the embodiment illustrated in FIGURE 1 , axis A2is offset and/or generally spaced apart from axis A3to facilitate relative movement between slider plate 42 and hinge arm 20 when hinge arm 20 is rotated in the direction indicated by arrow 22b. For example, as hinge arm 20 is pivoted in the direction of arrow 22b, the spaced apart relationship of hinge axes A2and A3cause slider plate 42 to move within opening 44 relative to hinge arm 20 in the direction of arrow 50a.
[0014] FIGURE 4 is a diagram illustrating locking system 38 in an unlocked position. When locking system 38 is configured in the unlocked position, panel mount plate 40, and thus display member 16, are pivotable relative to hinge arm 20 in the directions of arrow 23a and 23b about axis Ai. In the embodiment illustrated in FIGURE 4, as hinge arm 20 is rotated in the direction of arrow 22b from the closed position (FIGURE 3), slider plate 42 moves relative to opening 44 in the direction of arrow 50a. As slider plate 42 moves relative to slot 44, hook 54 disengages a rear side 42a of slider plate 42 and becomes aligned with an opening 68 disposed on slider plate 42 to facilitate pivotable movement of panel mount plate 40. For example, as hinge arm 20 is rotated from the closed position in the direction of arrow 22b, hook 54 engages rear side 42a of slider plate 42 until hook 54 is positioned within opening 68 to prevent movement of panel mount plate 40 in the direction of arrow 23b. When hinge arm 20 is positioned at angle θ2lhook 54 is fully disengaged from the rear side 42a of slider plate 42 and aligned with opening 68 to enable pivotable movement of panel mount plate 40 relative to hinge arm 20 in the direction of arrow 23b. Likewise, as hinge arm 20 is rotated in the direction of arrow 22a, slider plate 42 moves within opening 44 relative to hinge arm 20 in the direction of arrow 50b to facilitate engagement of hook 54 with rear side 42a of slider plate 42, thereby resisting and/or otherwise preventing pivotable movement of panel mount plate 40, and thus display member 16, in the direction of arrow 23b.
[0016] In operation, in response to movement of hinge arm 20 in the direction of arrow 22b (FIGURES 3 and 4), slider plate 42 moves relative to hinge arm 20 in the direction of arrow 50a causing movement of extensions 60 and 62 relative to slider plate 42 within longitudinal slot portions 90 in the direction of arrow 50b (e.g., movement of extensions 60 and 62 within longitudinal slot portions 90 from an edge 100 toward an edge 101 , thereby aligning extensions 60 and 62 with lateral slot portions 92. In addition, such movement of hinge arm 20 in the direction of arrow 22b (FIGURES 3 and 4) positions slider plate 42 such that hook 54 is aligned with opening 68 thereby disengaging the back side of slider plate 42. When hook 54 is aligned with opening 68 and extensions 60 and 62 are align with lateral slot portions 92, locking system 38 is in the unlocked position to enable pivotable movement of panel mount plate 40, and thus display member 16, in the direction of arrow 23b (FIGURES 1 and 4).
[0017] FIGURES 6A-6C are diagrams illustrating a section view of a portion of locking system 38 of FIGURES 5A-5C taken along the lines 6A— 6A of FIGURE 5A, 6B— 6B of FIGURE 5B and 6C— 6C of FIGURE 5C, respectively. In the embodiment illustrated in FIGURES 5A and 6A, locking plate 58 is biased against extension 56 in the direction of arrow 74 by a biasing mechanism 76. In operation, extension 56 is disposed within an opening 78 disposed on locking plate 58 to compress biasing mechanism 76 and position locking plate 58 such that extensions 60 and 62 are positioned within longitudinal slot portions 90 (FIGURE 5A). As panel mount plate 40 is rotated away from hinge arm 20 in the direction of arrow 23b, extension 56 is removed from opening 78 and biasing mechanism 76 exerts a force on locking pate 58 to facilitate movement of locking plate 58 in the direction of arrow 74 (FIGURES 5B and 6B). In the embodiment illustrated in FIGURES 5A-5C, as locking plate 58 moves in the direction of arrow 74, extensions 60 and 62 are positioned within lateral slot portions 92 (FIGURES 5B and 5C). Accordingly, in the event hinge arm 20 is rotated in the direction of arrow 22a, extensions 60 and 62 contact an edge 94 of lateral slot portions 92 to resist movement of hinge arm 20 in the direction of arrow 22a, such as, for example, with angles less than angles Θ2(e.g., less than seventy degrees relative to base member 18 (FIGURES 2C and 2D). Likewise, an edge 96 of lateral slot portions 92 restricts rotation of hinge arm 20 in the direction of arrow 22b, such as, for example, with angles greater than angle θi (e.g., greater than ninety degrees relative to base member 18)(FIGURE 2A). It should be understood that lateral slot portions 90 and 92 may comprise a larger or smaller width and/or extensions 60 and 62 may be larger or smaller to reduce or increase the pivotable range of hinge arm 20 while display member 16 is rotated at any angle Φ relative to hinge arm 20.
[0018] In the embodiment illustrated in FIGURES 5A-6C, when rotating panel mount plate 40 toward hinge arm 20 (e.g., in the direction indicated by arrow 23a (FIGURES 1 and 4)), hook 54 is inserted within opening 68 (FIGURES 5A-5C) and extension 56 is inserted within opening 78 (FIGURES 6A-6C). In FIGURES 6A-6C, as extension 56 is inserted within opening 68, extension 56 slideably engages a sloped sidewall 98 of opening 78 and otherwise forces locking plate 58 in the direction of arrow 75 thereby compressing biasing mechanism 76 and causing extensions 60 and 62 to move relative to lateral slot portions 92. Extensions 60 and 62 move in the direction of arrow 75 until aligned with longitudinal slot portions 90 (FIGURE 5A). Once extensions 60 and 62 are aligned with longitudinal slot portions 90, hinge arm 20 is pivotable in the direction of arrows 22a and 22b (FIGURES 2C and 4). Extensions 60 and 62 travel relative to longitudinal slot 90 until extensions 60 and 62 engage edges 100 of longitudinal slots 90 and display member 16 is otherwise in the closed position (FIGURES 2D and 4).
[0019] According to some embodiments, hinge system 46 may generate a frictional force different than the frictional force generated hinges 52a and 52b. For example, in the event it is desired that hinge assembly 12 enable rotation of display member 16 without movement of hinge arm 20, the frictional forces generated by hinge system 46 would be greater than the frictional force generated by hinges 52a and 52b. Thus, in the event a user desires to reconfigure display member 16 relative to hinge arm 20 while hinge arm 20 is disposed at an angle θ of eighty degrees, the user may adjust the position of display member 16 relative to hinge arm 20 without causing rotation of hinge arm 20

中文:
[0002]图1是电子装置的示意图,该电子装置有利地实施了可调节显示部件的实施例;
[0003]图2A-2D是示意图,其图解说明了图1的电子装置和可调节显示部件从打开位置转换到关闭位置的透视视图;
[0004]图3是示意图,其图解说明了图1的可调节显示部件的铰链组件的实施例,该实施例中,铰链组件处于锁闭位置;
[0006]图5A-5C是附加的示意图,其图解说明了图3和图4的铰链组件;
[0007]图6A-6C是示意图,其图解说明了图5A-5C的铰链组件的局部剖面图,即分别是图5A中6A-6A线、图5B中6B-6B线和图5C中6C-6C线的局部剖面图。
[0008]图1是电子装置10的示意图,该电子装置有利地实施了可调节显示部件16的实施例。在图1所图解说明的实施例中,电子装置10包括膝上型或笔记本计算机14;然而应理解的是电子装置10可包括任意类型的电子装置,例如但不限于平板个人计算机或其他任意类型的便携式或非便携式电子装置。在图1所图解说明的实施例中,电子装置10包括显示部件16,该显示部件16通过铰链组件12可旋转地连接至基座部件18。在图1中,铰链组件12包括铰链臂20,所述铰链臂20具有端部20a和端部20b,所述端部20a可枢转地连接至显示部件16,所述端部20b可枢转地连接至基座部件18,以便于铰链臂20相对于基座部件18的枢转运动以及显示部件16相对于铰链臂20的枢转运动。例如,在图1所图解说明的实施例中,铰链组件12有助于铰链臂20沿箭头22方向的枢转运动,同时也有助于显示部件16沿箭头23方向相对于铰链臂20的枢转运动。在操作中,铰链组件12的实施例被构造成根据显示部件16和/或铰链臂20的(一个或多个)位置来防止显示部件16和/或铰链臂20的枢转运动,以消除显示部件16和基座部件18之间不必要的和/或破坏性接触。
[0009]图2A-2D是示意图,其图解说明了图1的电子装置10从打开位置(图2A)转换到关闭位置(图2D)的透视视图。在图2A所图解说明的实施例中,铰链臂20从基座部件18大致竖直地、以相对于基座部件18近似为90度的角度θ1延伸,并且显示部件16旋转至相对于铰链臂20近似为45度的角度Φ。在图2A-2D中,铰链臂可在一个角位置范围内旋转,该范围从相对于基座部件18近似为90度的角度θ1延伸到相对于基座部件18近似为0度的角度(即图2D中所图解说明的关闭位置);然而应理解的是,铰链臂20相对于基座部件16的角位置可以改变。在图2A-2D中,显示部件16可在一个角位置范围内旋转,该范围从与铰链臂20共面的位置(图2C和图2D)延伸到近似为45度的角度Φ(图2B),然而应理解的是,显示部件16可被连接至铰链臂20以便于在其他角位置定位。
[0010]在操作中,为了将电子装置10定位在关闭位置,将铰链臂20沿箭头22a方向旋转(图2B)直到铰链臂20定位在预定角度θ2,在该预定角度,铰链组件12被构造成自动防止铰链臂20沿箭头22a方向进一步的枢转运动直到将显示部件16相对于铰链臂20可旋转地定位(图2C),以防止显示部件16和基座部件18的工作表面24之间的接触。例如,如果当显示部件16被定位在相对于铰链臂20的角度Φ的位置时,铰链臂20在箭头22a方向上可进一步旋转至小于θ2的角度,则显示部件16的底壁26可能会与基座部件18接触,并可能会潜在地损坏显示部件16和/或基座部件18。铰链组件12的实施例被构造成限制铰链臂20沿箭头22a方向的枢转运动量,直到显示部件16被定位以防止该潜在损坏。在一个实施例中,限制铰链臂20的旋转直到角度Φ为近似0度或显示部件16与铰链臂20大致共面。如本文所使用的,电子装置10的“关闭位置”应当指:显示部件16位于与基座部件18基本平行和/或基本共面的位置,使得显示部件16被布置成与基座部件18的工作表面24接触或直接邻近基座部件18的工作表面24(图1)。相应地,铰链组件12可操作以自动防止显示部件16和基座部件18之间不必要的和/或潜在地破坏性接触。另外,铰链组件12有助于使用一只手,相对于基座部件18打开和关闭显示部件16,使得在相对于基座部件18定位显示部件16时用户不需要使用两只手来对屏幕进行操作和/或定向。
[0011]图3是示意图,其图解说明了图1的铰链组件12的实施例,该实施例中,铰链组件处于关闭位置,该铰链组件有利地实施了锁定系统38。在图3所图解说明的实施例中,铰链组件12包括铰链臂20和面板安装板40。在图3中,通过铰链52a和52b将面板安装板40可旋转地连接至铰链臂20,以便于绕轴线A1的枢转运动。通过铰链系统46,将铰链臂20可旋转地连接至基座部件18(图1和图2A-2D),以便于绕轴线A2的枢转运动。
[0012]在图3所图解说明的实施例中,当铰链臂20被定位在等于或小于角度θ2的角度时(例如图2B-2D),锁定系统38被构造成阻碍面板安装板40相对于铰链臂20的枢转运动,从而阻碍显示部件16相对于铰链臂20的枢转运动(图1-2D)。在图3所图解说明的实施例中,锁定系统38包括钩状件54和布置于面板安装板40上的延伸部56、滑动板42和锁定板58。在图3中,滑动板42和锁定板58可在铰链臂20的开44内运动。锁定板58包括一对延伸部60和62,所述延伸部60和62在一对相应的缝槽64和66内延伸/所述延伸部60和62延伸穿过一对相应的缝槽64和66,所述缝槽64和66在滑动板42上。在操作中,当铰链臂20被定位在角度θ1和角度θ2之间时(图1-2B),锁定系统38被构造成有助于显示部件16相对于铰链臂20的枢转运动。另外,当显示部件16被定向在关闭位置至小于或等于角度θ2的角度之间时(图2B-2D),锁定系统38被构造成阻碍显示部件16相对于铰链臂20的枢转运动。
[0013]在图3中,通过铰链系统46将铰链臂20和偏移滑动板42可枢转地连接至基座部件18(图1-2D)。在图3中,铰链系统46有助于铰链臂20绕轴线A2的枢转运动以及滑动板42绕轴线A3的枢转运动。在图1所示的实施例中,轴线A2偏离轴线A3和/或大致与轴线A3间隔开,以在铰链臂20沿箭头22b指示的方向旋转时有助于滑动板42和铰链臂20之间的相对运动。例如,当铰链臂20沿箭头22b方向枢转时,铰链轴线A2和A3间隔开的关系导致滑动板42在开口44内沿箭头50a方向相对于铰链臂20运动。
[0014]图4是示意图,其图解说明了处于解锁位置的锁定系统38。当锁定系统38被构造成处于解锁位置,面板安装板40、进而显示部件16,绕轴线A1沿箭头23a和23b方向相对于铰链臂20是可枢转的。在图4所图解说明的实施例中,当铰链臂20从关闭位置(图3)沿箭头22b方向旋转时,滑动板42沿箭头50a方向相对于开口44运动。当滑动板42相对于缝槽44运动时,钩状件54与滑动板42的后侧42a脱离,并变得与布置于滑动板42上的开口68对准,以便于面板安装板40的枢转运动。例如,当铰链臂20沿箭头22b方向从关闭位置旋转时,钩状件54与滑动板42的后侧42a接合直到钩状件54被定位在开口68内,以防止面板安装板40沿箭头23b方向运动。当铰链臂20被定位在角度θ2时,钩状件54从滑动板42的后侧42a完全脱离并且与开口68对准,使得面板安装板40可沿箭头23b方向相对于铰链臂20枢转运动。同样地,当铰链臂20沿箭头22a方向旋转时,滑动板42沿箭头50b方向相对于铰链臂20在开口44内运动,以便于钩状件54与滑动板42的后侧42a接合,从而阻碍和/或防止面板安装板40沿箭头23b方向的枢转运动,并进而阻碍和/或防止显示部件16沿箭头23b方向的枢转运动。
[0016]在操作中,响应于铰链臂20沿箭头22b(图3和图4)方向的运动,滑动板42沿箭头50a方向相对于铰链臂20运动,导致延伸部60和62沿箭头50b方向在纵向缝槽部90内相对于滑动板42运动(例如,延伸部60和62在纵向缝槽部90内从边缘100到边缘101的运动,从而将延伸部60和62与侧向缝槽部92对准)。另外,铰链臂20沿箭头22b方向(图3和图4)的该运动对滑动板42进行了定位,使得钩状件54与开口68对准,从而与滑动板42的背部脱离。当钩状件54与开口68对准并且延伸部60和62与侧向缝槽部92对准时,锁定系统38处于解锁位置,以使面板安装板40进而使显示部件16可沿箭头23b方向(图1和图4)枢转地运动。
[0017]图6A-6C是示意图,其图解说明了图5A-5C的锁定系统38的局部剖面图,即分别是图5A中6A-6A线、图5B中6B-6B线和图5C中6C-6C线的局部剖面图。在图5A和6A所图解说明的实施例中,通过偏置机构76将锁定板58沿箭头74方向偏置以抵靠延伸部56。在操作中,延伸部56被布置在开口78内,所述开口78被布置在锁定板58上,以压缩偏置机构76并对锁定板58进行定位,使得延伸部60和62被定位在纵向缝槽部90内(图5A)。当面板安装板40沿箭头23b方向旋转远离铰链臂20时,延伸部56从开口78内移出,偏置机构76向锁定板58施加作用力以便于锁定板58沿箭头74方向运动(图5B和6B)。在图5A-5C所图解说明的实施例中,当锁定板58沿箭头74方向运动时,延伸部60和62被定位在侧向缝槽部92内(图5B和5C)。相应地,如果铰链臂20沿箭头22a方向旋转,则延伸部60和62与侧向缝槽部92的边缘94接触,以阻碍铰链臂20沿箭头22a方向的运动,例如阻碍铰链臂20运动至小于角度θ2的角度(例如,相对于基座部件18小于70度的角度)(图2C和2D)。同样地,侧向缝槽部92的边缘96限制铰链臂20沿箭头22b方向旋转,例如限制铰链臂20旋转至大于角度θ1的角度(例如,相对于基座部件18大于90度的角度)(图2A)。应理解的是,侧向缝槽部90和92的宽度可以更大或更小,和/或延伸部60和62的尺寸可以更大或更小,以在显示部件16相对于铰链臂20旋转至任意角度Φ时减小或增大铰链臂20的可枢转范围。
[0018]在图5A-6C所图解说明的实施例中,当将面板安装板40朝铰链臂20旋转时(例如,沿箭头23a指示的方向(图1和图4)),钩状件54插入开口68内(图5A-5C)并且延伸部56插入开口78内(图6A-6C)。在图6A-6C中,当延伸部56插入开口68内时,延伸部56与开口78的倾斜侧壁98可滑动地接合并另沿箭头75方向对锁定板58施加作用力,从而压缩偏置机构76并导致延伸部60和62相对于侧向缝槽部92运动。延伸部60和62沿箭头75方向运动直到与纵向缝槽部90对准(图5A)。一旦延伸部60和62与纵向缝槽部90对准,铰链臂20即在箭头22a和22b方向上是可枢转的(图2C和图4)。延伸部60和62相对于纵向缝槽90行进,直到延伸部60和62与纵向缝槽90的边缘100接合,并且显示部件另处于关闭位置(图2D和图4)。
[0019]根据一些实施例,铰链系统46可产生不同于铰链52a和52b所产生摩擦力的摩擦力。例如,如果希望铰链组件12使显示部件16旋转却不使铰链臂20运动,铰链系统46产生的摩擦力应当大于铰链52a和52b产生的摩擦力。因而,如果用户希望在铰链臂20处于80度的角度θ时相对于铰链臂20重新调整显示部件16的位置,那么用户可以在不引起铰链臂20旋转的情况下调节显示部件16相对于铰链臂20的位置。