WO2018099278A1 - 车载显示屏装置及车辆 - Google Patents

车载显示屏装置及车辆 Download PDF

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Publication number
WO2018099278A1
WO2018099278A1 PCT/CN2017/111693 CN2017111693W WO2018099278A1 WO 2018099278 A1 WO2018099278 A1 WO 2018099278A1 CN 2017111693 W CN2017111693 W CN 2017111693W WO 2018099278 A1 WO2018099278 A1 WO 2018099278A1
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WO
WIPO (PCT)
Prior art keywords
shaft
display device
contact
half clutch
bearing
Prior art date
Application number
PCT/CN2017/111693
Other languages
English (en)
French (fr)
Inventor
张晓茹
蔡清
白胜
许晓方
杜菊华
Original Assignee
比亚迪股份有限公司
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.)
Filing date
Publication date
Application filed by 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Priority to EP17876415.5A priority Critical patent/EP3549826A1/en
Priority to US16/465,077 priority patent/US10882462B2/en
Publication of WO2018099278A1 publication Critical patent/WO2018099278A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R11/0229—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for displays, e.g. cathodic tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R11/0229—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for displays, e.g. cathodic tubes
    • B60R11/0235—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for displays, e.g. cathodic tubes of flat type, e.g. LCD
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0001—Arrangements for holding or mounting articles, not otherwise provided for characterised by position
    • B60R2011/0003—Arrangements for holding or mounting articles, not otherwise provided for characterised by position inside the vehicle
    • B60R2011/0005—Dashboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0042—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means
    • B60R2011/008—Adjustable or movable supports
    • B60R2011/0085—Adjustable or movable supports with adjustment by rotation in their operational position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0042—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means
    • B60R2011/008—Adjustable or movable supports
    • B60R2011/0092—Adjustable or movable supports with motorization

Definitions

  • the present disclosure relates to an in-vehicle display device, and to a vehicle having the in-vehicle display device.
  • the on-board multimedia display is becoming more and more large-screen.
  • the common on-board multimedia display has two layouts: horizontal and vertical, and the arrangement is related to the interior of the car.
  • the existing vehicle-mounted multimedia display screen can only be fixedly installed on the cab dashboard in the horizontal screen state or the vertical screen state, and the horizontal screen and the vertical screen cannot be switched at will, which cannot satisfy the user's operation habits for different applications, resulting in user experience. Not good.
  • the present disclosure provides an in-vehicle display device including a display screen, a motor, and a transmission system, wherein the motor drives the display screen to rotate through the transmission system, wherein the transmission system includes a first a shaft, a second shaft, a first half clutch, a second half clutch and an elastic member, the first shaft is coaxially disposed with the second shaft, and the first half clutch is axially slidably sleeved at the first On the shaft, the second half clutch is coupled to the second shaft, a first tooth is formed on an end surface of the first half clutch facing the second half clutch, and the second half clutch faces the first shaft A second tooth is formed on an end surface of the half clutch, and the elastic member applies an axial elastic force to the first half clutch to engage the first tooth with the second tooth.
  • the transmission system includes a first a shaft, a second shaft, a first half clutch, a second half clutch and an elastic member, the first shaft is coaxially disposed with the second shaft, and the first half clutch is axial
  • the present disclosure also provides a vehicle including the in-vehicle display device as described above.
  • the display screen can be rotated relative to the vehicle instrument panel, thereby realizing the switching of the horizontal screen and the vertical screen, better satisfying the user's operating habits for different applications, and improving the user experience;
  • the clutch with overload protection function is set in the transmission system, so that the power transmission can be interrupted in time when the system is overloaded, the motor and the transmission system are prevented from being damaged, and the service life of the vehicle display device is prolonged.
  • FIG. 1 is a perspective view of an in-vehicle display device in accordance with an embodiment of the present disclosure
  • FIG. 2 is a top plan view of an in-vehicle display device in accordance with an embodiment of the present disclosure
  • FIG. 3 is a front view of an in-vehicle display device in accordance with an embodiment of the present disclosure
  • Figure 4 is a cross-sectional view taken along line AA of Figure 3;
  • Figure 5 is a partial enlarged view of Figure 4.
  • Figure 6 is a cross-sectional view of the first half clutch
  • Figure 7 is a cross-sectional view of the second half clutch
  • Figure 8 is a cross-sectional view of the first shaft
  • Figure 9 is a front view of the fixed frame.
  • an in-vehicle display device including a display screen 17, a motor 2, and a transmission system, and the motor 2 drives the display screen 17 to rotate through the transmission system to cause the display screen 17 can switch between the landscape state and the portrait state.
  • the transmission system comprises a first shaft 4, a second shaft 12 and a clutch, the first shaft 4 Torque is transmitted through the clutch between the second shaft 12.
  • the clutch includes a first half clutch 10, a second half clutch 11 and an elastic member 9, and the elastic member 9 is sleeved on the first shaft 4, and the first shaft 4 and the second shaft 12 are 12 Coaxially disposed, the first partial clutch 10 is axially slidably sleeved on the first shaft 4, the second partial clutch 11 is coupled to the second shaft 12, and the first partial clutch 10 faces the end surface of the second partial clutch 11.
  • the first tooth 101 is formed, and the second half 111 is formed on the end surface of the second half clutch 11 facing the first half clutch 10.
  • the elastic member 9 applies an elastic force along the axial direction of the first shaft 4 to the first half clutch 10 to press the first half clutch 10 and the second half clutch 11 to the first tooth 101 and the second tooth 111. Engaged without relative rotation between the two, the clutch is engaged.
  • system overload for example, the occupant twists the display screen 17 by hand
  • the axial component of the tooth surface pressing force of the first tooth 101 and the second tooth 111 is greater than the elastic member 9 is applied to the first half clutch 10 at this time.
  • the axial elastic force the first half clutch 10 moves axially away from the second half clutch 11 to disengage from the second half clutch 11, the clutch is in a disengaged state, the torque transmission is interrupted, and the system is overload protected.
  • the overload condition disappears, the first half clutch 10 is again reset by the elastic member 9, re-engages with the second half clutch 11, and the clutch returns to the engaged state, and the torque can be normally transmitted.
  • the display screen 17 can be rotated relative to the vehicle instrument panel, thereby realizing the switching of the horizontal screen and the vertical screen, better satisfying the user's operating habits for different applications, and improving the user experience;
  • the power transmission can be interrupted in time when the system is overloaded, the motor 2 and the transmission system are prevented from being damaged, and the service life of the vehicle display device is prolonged.
  • the first tooth 101 and the second tooth 111 may have various appropriate tooth shapes as long as their tooth surface pressing force has an axial component force.
  • the tooth shapes of the first tooth 101 and the second tooth 111 may both be trapezoidal, involute, or triangular.
  • the first partial clutch 10 can be coupled to the first shaft 4 in a variety of suitable manners.
  • the first partial clutch 10 can be splined to the first shaft 4.
  • the first shaft 4 can have a non-circular cross section that facilitates the transfer of torque, and the first partial clutch 10 is matingly coupled to the first shaft 4.
  • the second partial clutch 11 can be coupled to the second shaft 12 in a variety of suitable manners.
  • the second partial clutch 11 can be coupled to the second shaft 12 by splines.
  • the second half clutch 11 can be interference fit to the second shaft 12.
  • the second partial clutch 11 can be welded directly to the second shaft 12.
  • the first shaft 4 is formed with an annular boss 41 extending in the circumferential direction thereof, and the two ends of the elastic member 9 are respectively supported at the first The half clutch 10 and the annular boss 41 are provided.
  • the first half clutch 10 can be connected to the elastic member 9 through a spline, and one end of the elastic member 9 is unilaterally restricted by the annular boss 41 of the first shaft 4, and the other end of the elastic member 9 and the first half clutch 10 end faces are connected.
  • the elastic member 9 can be, for example, a spring or an elastic sleeve that is sleeved on the first shaft 4.
  • the display screen 17 can be rotated at a slower speed in consideration of the occupant's driving experience.
  • a speed reducer 3 can be provided between the motor 2 and the display screen 17.
  • the first shaft 4 may be the output shaft 31 of the speed reducer 3, that is, the first shaft 4 and the output shaft 31 of the speed reducer 3 are the same shaft
  • the second shaft 12 may be It is fixed on the display screen 17 to drive the display screen 17 to rotate through the second shaft 12
  • the first shaft 4 and the output shaft 31 of the speed reducer 3 are respectively two shafts, and the first shaft 4 is
  • the output shaft 31 of the speed reducer 3 is drivingly coupled, and the second shaft 12 can be fixed to the display screen 17 to drive the display screen 17 to rotate through the second shaft 12.
  • first shaft 4 is the drive shaft and the second shaft 12 is the driven shaft.
  • first shaft 4 may be a driven shaft and the second shaft 12 may be a drive shaft.
  • the speed reducer 3 can be any suitable type of speed reducer.
  • the speed reducer 3 in order for the display screen 17 to be able to rotate at a very slow rotational speed, the speed reducer 3 is required to have a large gear ratio.
  • the present disclosure preferably uses a small-tooth difference planetary gear reducer, which can ensure a large transmission ratio, and can ensure that the reducer has a simple and compact structure, small volume and light weight, which makes the transmission more stable and lower in noise. , better carrying performance.
  • the first shaft 4 can be drivingly coupled to the output shaft 31 of the speed reducer 3 in a variety of suitable manners.
  • the first shaft 4 may have a central shaft hole 42 having an internal spline formed on the wall of the hole, and the output shaft 31 of the speed reducer 3 is provided with an internal spline.
  • the external spline, the output shaft 31 of the speed reducer 3 and the first shaft 4 are spline-connected for power transmission.
  • the first shaft 4 may have a central shaft bore 42 through which the first shaft 4 is interference fit on the output shaft 31 of the speed reducer 3.
  • the first shaft 4 may have a central shaft bore 42 that is sleeved through the central shaft bore 42 on the output shaft 31 of the speed reducer 3, the locating pin passing radially through the first shaft 4 and inserted into the output In the shaft 31.
  • the on-vehicle display device of the present disclosure may further include a fixed frame 1 on which the motor 2 and the speed reducer 3 are mounted, and the fixed frame 1 may have a mounting hole, the mounting hole A bearing may be disposed therein, and the first shaft 4 is supported on the fixed frame 1 by bearings.
  • the structural stability of the first shaft 4 can be improved, bending deformation can be prevented, and the stability and reliability of power transmission can be ensured.
  • the bearing may include a first bearing 6 and a second bearing 7 which are spaced apart in the axial direction of the first shaft 4, and the first shaft 4 may be formed with an annular convex extending in the circumferential direction thereof.
  • the stage 41, the side of the first bearing 6 facing away from the second bearing 7 can abut against the annular boss 41, and the positioning sleeve 8 can be disposed between the first bearing 6 and the second bearing 7, and the second bearing 7 faces away from the first
  • One side of the bearing 6 can be fixed by the shaft with a circlip 5 .
  • the first bearing 6 and the second bearing 7 realize the support arrangement of the double bearing, so that both the axial load and the radial load can be received, and the transmission system has sufficient support strength and rigidity for the stability of the whole device.
  • the vibration resistance provides a guarantee; in particular, the first bearing 6 and the second bearing 7 may both be deep groove ball bearings, which are guaranteed to withstand both axial and radial loads.
  • the fixed frame 1 may be provided with a first contact switch 13 and a second contact switch 14, and the display screen 17 is fixed.
  • the contact 15 is provided, and when the display screen 17 is in the horizontal screen state, the contact 15 is in contact with the first contact switch 13; when the display screen 17 is in the vertical state, the contact 15 is in contact with the second contact switch 14.
  • the in-vehicle display device may further include a motor controller, the motor controller is configured to first determine, according to the conduction condition of the two contact switches, whether the display screen 17 is in a horizontal screen state or a vertical screen state after receiving the display screen rotation instruction; If the display screen 17 is in the horizontal screen state (ie, the contact 15 is in contact with the first contact switch 13), the motor 2 is controlled to rotate forward, and the display screen 17 is driven to rotate clockwise.
  • the motor controller is configured to first determine, according to the conduction condition of the two contact switches, whether the display screen 17 is in a horizontal screen state or a vertical screen state after receiving the display screen rotation instruction; If the display screen 17 is in the horizontal screen state (ie, the contact 15 is in contact with the first contact switch 13), the motor 2 is controlled to rotate forward, and the display screen 17 is driven to rotate clockwise.
  • the in-vehicle display device of the present disclosure may further include a rear frame bracket 16 fixed on the back surface of the display screen 17 , and the second shaft 12 may be integrally formed with the rear frame bracket 16 . 15 can be fixed to the rear frame bracket 16.
  • a vehicle having the on-vehicle display device of the present disclosure disposed thereon.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Instrument Panels (AREA)

Abstract

一种车载显示屏装置及车辆，所述车载显示屏装置包括显示屏（17）、电机（2）和传动系统。电机（2）通过传动系统驱动显示屏（17）旋转，传动系统包括第一轴（4）、第二轴（12）、第一半离合器（10）、第二半离合器（11）和弹性件（9）。第一轴（4）与第二轴（12）同轴设置，第一半离合器（10）可轴向滑动地套接在第一轴（4）上，第二半离合器（11）连接在第二轴（12）上，第一半离合器（10）面向第二半离合器（11）的端面上形成有第一齿（101），第二半离合器（11）面向第一半离合器（10）的端面上形成有第二齿（102），弹性件（9）向第一半离合器（10）施加轴向弹性力，以使第一齿（101）与第二齿（102）相啮合。以此方式，一方面能够实现横屏和竖屏的切换，另一方面，能够在系统发生过载情况时及时中断动力传递，防止电机及传动系统受到损坏。

Description

车载显示屏装置及车辆
相关申请的交叉引用
本申请要求于2016年11月30日提交至中国国家知识产权局的专利申请号为201611086395.7的中国专利申请的优先权，其公开内容通过引用并入本文。
技术领域
本公开涉及一种车载显示屏装置，还涉及一种具有该车载显示屏装置的车辆。
背景技术
随着智能时代的到来，汽车多媒体的功能应用越来越广泛，汽车多媒体的人机操作作为产品设计的重点越来越受到重视。
目前，车载多媒体显示屏越来越趋于大屏化，常见的车载多媒体显示屏有横屏和竖屏两种布置方式，采用何种布置方式与汽车内饰造型有关。现有的车载多媒体显示屏只能以横屏状态或竖屏状态固定安装在驾驶室仪表台上，不能实现横屏和竖屏的随意切换，无法满足用户对于不同应用的操作习惯，导致用户体验不佳。
发明内容
本公开的目的是提供一种能够实现横竖屏切换且具有过载保护功能的车载显示屏装置。
为了实现上述目的，本公开提供一种车载显示屏装置，包括显示屏、电机和传动系统，所述电机通过所述传动系统驱动所述显示屏旋转，其特征在于，所述传动系统包括第一轴、第二轴、第一半离合器、第二半离合器和弹性件，所述第一轴与第二轴同轴设置，所述第一半离合器可轴向滑动地套接在所述第一轴上，所述第二半离合器连接在所述第二轴上，所述第一半离合器面向所述第二半离合器的端面上形成有第一齿，所述第二半离合器面向所述第一半离合器的端面上形成有第二齿，所述弹性件向所述第一半离合器施加轴向弹性力，以使所述第一齿与第二齿相啮合。
本公开还提供一种车辆，包括如上所述的车载显示屏装置。
通过上述技术方案，一方面，使得显示屏能够相对于车辆仪表台旋转，从而实现横屏和竖屏的切换，更好地满足用户对于不同应用的操作习惯，提升用户体验；另一方面，通过在传动系统中设置具有过载保护功能的离合器，使得在系统发生过载情况时能够及时中断动力传递，防止电机及传动系统受到损坏，延长车载显示屏装置的使用寿命。
本公开的其他特征和优点将在随后的具体实施方式部分予以详细说明。
附图说明
附图是用来提供对本公开的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本公开，但并不构成对本公开的限制。在附图中：
图1是根据本公开的一种实施方式的车载显示屏装置的立体图；
图2是根据本公开的一种实施方式的车载显示屏装置的俯视图；
图3是根据本公开的一种实施方式的车载显示屏装置的主视图；
图4是图3的AA剖视图；
图5是图4的局部放大图；
图6是第一半离合器的剖视图；
图7是第二半离合器的剖视图；
图8是第一轴的剖视图；
图9是固定机架的主视图。
附图标记说明
1 固定机架                    2 电机
3 减速器                      31 输出轴
4 第一轴                      41 环形凸台
42 中心轴孔                   5 轴用弹性挡圈
6 第一轴承                    7 第二轴承
8 定位轴套                    9 弹性件
10 第一半离合器               101 第一齿
11 第二半离合器               111 第二齿
12 第二轴                     13 第一触点开关
14 第二触点开关               15 触头
16 屏后支架                   17 显示屏。
具体实施方式
以下结合附图对本公开的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本公开，并不用于限制本公开。
如图1至图9所示，根据本公开的一个方面，提供一种车载显示屏装置，包括显示屏17、电机2和传动系统，电机2通过传动系统驱动显示屏17旋转，以使显示屏17能够在横屏状态和竖屏状态之间切换。其中，所述传动系统包括第一轴4、第二轴12和离合器，第一轴4 和第二轴12之间通过离合器传递扭矩。如图5至图7所示，所述离合器包括第一半离合器10、第二半离合器11和弹性件9，弹性件9套设在第一轴4上，第一轴4与第二轴12同轴设置，第一半离合器10可轴向滑动地套接在第一轴4上，第二半离合器11连接在第二轴12上，第一半离合器10面向第二半离合器11的端面上形成有第一齿101，第二半离合器11面向第一半离合器10的端面上形成有第二齿111。
正常工况下，弹性件9向第一半离合器10施加沿第一轴4轴向的弹性力，使第一半离合器10与第二半离合器11压紧，第一齿101与第二齿111相啮合，二者之间不发生相对转动，离合器处于接合状态。系统过载情况下(例如，乘员用手扭动显示屏17)，此时第一齿101与第二齿111的齿面挤压力的轴向分力大于弹性件9施加给第一半离合器10的轴向弹性力，第一半离合器10朝着远离第二半离合器11的方向轴向移动，从而与第二半离合器11脱离啮合，离合器处于分离状态，扭矩传递中断，进而对系统形成过载保护。当过载情况消失后，第一半离合器10又在弹性件9的作用下复位，与第二半离合器11重新啮合，离合器回到接合状态，可以正常传递扭矩。
通过上述技术方案，一方面，使得显示屏17能够相对于车辆仪表台旋转，从而实现横屏和竖屏的切换，更好地满足用户对于不同应用的操作习惯，提升用户体验；另一方面，通过在传动系统中设置具有过载保护功能的离合器，使得在系统发生过载情况时能够及时中断动力传递，防止电机2及传动系统受到损坏，延长车载显示屏装置的使用寿命。
在本公开中，第一齿101和第二齿111可以具有各种适当的齿形，只要其齿面挤压力具有轴向分力即可。例如，第一齿101和第二齿111的齿形可以均为梯形、渐开线形、或者三角形等。
在本公开中，第一半离合器10可以通过多种适当的方式连接到第一轴4上。例如，如图5和图6所示，第一半离合器10可以通过花键连接到第一轴4上。再例如，第一轴4可以具有便于传递扭矩的非圆形横截面，第一半离合器10匹配地套接到第一轴4上。
在本公开中，第二半离合器11可以通过多种适当的方式连接到第二轴12上。例如，如图5和图7所示，第二半离合器11可以通过花键连接到第二轴12上。再例如，第二半离合器11可以过盈配合到第二轴12上。还例如，第二半离合器11可以直接焊接在第二轴12上。
在本公开中，为了方便定位弹性件9，如图5和图8所示，第一轴4上形成有沿其圆周方向延伸的环形凸台41，弹性件9的两端分别支撑在第一半离合器10和环形凸台41上。具体的，第一半离合器10可以通过花键与弹性件9连接，弹性件9的一端通过第一轴4的环形凸台41进行单边限位，弹性件9的另一端与第一半离合器10的端面连接。这里，弹性件9例如可以为套设在第一轴4上的弹簧或弹性套筒。
考虑到乘员的驾乘体验，显示屏17可以以较缓慢的转速进行旋转。为此，如图1、图2、 图4和图5所示，可以在电机2和显示屏17之间设置减速器3。在这种情况下，作为一种实施方式，第一轴4可以为减速器3的输出轴31，即，第一轴4与减速器3的输出轴31为同一根轴，第二轴12可以固定于显示屏17上，以通过第二轴12带动显示屏17旋转；作为另一种实施方式，第一轴4与减速器3的输出轴31分别为两根轴，并且第一轴4与减速器3的输出轴31传动连接，第二轴12可以固定于显示屏17上，以通过第二轴12带动显示屏17旋转。在上述两种实施方式中，第一轴4为主动轴，第二轴12为从动轴。在其他未示出的实施方式中，也可以是第一轴4为从动轴，第二轴12为主动轴，这些实施方式均落入本公开的保护范围内。
在本公开中，减速器3可以为任意适当类型的减速器。然而，为了使显示屏17能够以极缓慢的转速进行旋转，要求减速器3具有较大的传动比。为此，本公开优选地采用少齿差行星齿轮减速器，这样既能保证具有较大的传动比，又可以保证减速器结构简单紧凑，体积小、重量轻，使得传动更平稳、噪声更低、承载性能更佳。
在一种实施方式中，第一轴4可以通过多种适当的方式传动连接于减速器3的输出轴31。例如，如图8所示，第一轴4可以具有中心轴孔42，该中心轴孔42的孔壁上形成有内花键，减速器3的输出轴31上设置有与内花键相啮合的外花键，减速器3的输出轴31与第一轴4通过花键连接实现动力传递。再例如，第一轴4可以具有中心轴孔42，第一轴4通过中心轴孔42过盈配合在减速器3的输出轴31上。还例如，第一轴4可以具有中心轴孔42，第一轴4通过中心轴孔42套接在减速器3的输出轴31上，定位销沿径向穿过第一轴4并插入到输出轴31中。
如图4和图5所示，本公开的车载显示屏装置还可以包括固定机架1，电机2和减速器3安装在固定机架1上，固定机架1可以具有安装孔，该安装孔内可以设置有轴承，第一轴4通过轴承支撑在固定机架1上。利用轴承支撑第一轴4，可以提高第一轴4的结构稳定性，防止其发生弯曲变形，保证动力传递的平稳性和可靠性。
这里，如图5所示，所述轴承可以包括沿第一轴4的轴向间隔布置的第一轴承6和第二轴承7，第一轴4上可以形成有沿其圆周方向延伸的环形凸台41，第一轴承6背离第二轴承7的一侧可以抵接于环形凸台41，第一轴承6与第二轴承7之间可以设置有定位轴套8，第二轴承7背离第一轴承6的一侧可以通过轴用弹性挡圈5固定。这里，第一轴承6和第二轴承7实现双轴承的支撑设置，这样既可以承受轴向载荷，也可以承受径向载荷，保证传动系统具有足够的支撑强度和刚度，为整个装置的稳定性和抗振性提供了保障；具体地，第一轴承6和第二轴承7可以均为深沟球轴承，保证既可以承受轴向载荷，也可以承受径向载荷。
本公开的车载显示屏装置可以具有任意适当的控制策略。作为一种实施方式，如图5和图9所示，固定机架1上可以设置有第一触点开关13和第二触点开关14，显示屏17上固 定有触头15，当显示屏17处于横屏状态时，触头15与第一触点开关13接触；当显示屏17处于竖屏状态时，触头15与第二触点开关14接触。车载显示屏装置还可以包括电机控制器，该电机控制器用于在接收到显示屏旋转指令后，首先根据两个触点开关的导通情况判断显示屏17是处于横屏状态还是竖屏状态；若显示屏17处于横屏状态(即触头15与第一触点开关13接触)，则控制电机2正转，驱动显示屏17进行顺时针旋转，旋转90度后，触头15与第二触点开关14接触，发出停止信号，电机2停止旋转，并实现到位锁止，完成从横屏到竖屏的切换；反之，若显示屏17处于竖屏状态(即触头15与第二触点开关14接触)，则控制电机2反转，驱动显示屏17进行逆时针旋转，旋转90度后，触头15与第一触点开关13接触，发出停止信号，电机2停止旋转，并实现到位锁止，完成从竖屏到横屏的切换。需要说明的是，这里所使用的术语“正转”、“反转”、“顺时针”、“逆时针”等仅用于表示两个相反的方向，并不代表某一特定的方向。
如图1、图2和图4所示，本公开的车载显示屏装置还可以包括固定在显示屏17背面上的屏后支架16，第二轴12可以与屏后支架16一体成型，触头15可以固定在屏后支架16上。
根据本公开的另一方面，提供一种车辆，该车辆上设置有本公开的车载显示屏装置。
以上结合附图详细描述了本公开的优选实施方式，但是，本公开并不限于上述实施方式中的具体细节，在本公开的技术构思范围内，可以对本公开的技术方案进行多种简单变型，这些简单变型均属于本公开的保护范围。
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合。为了避免不必要的重复，本公开对各种可能的组合方式不再另行说明。
此外，本公开的各种不同的实施方式之间也可以进行任意组合，只要其不违背本公开的思想，其同样应当视为本公开的内容。

Claims (15)

  1. 一种车载显示屏装置，包括显示屏(17)、电机(2)和传动系统，所述电机(2)通过所述传动系统驱动所述显示屏(17)旋转，其特征在于，所述传动系统包括第一轴(4)、第二轴(12)、第一半离合器(10)、第二半离合器(11)和弹性件(9)，所述第一轴(4)与第二轴(12)同轴设置，所述第一半离合器(10)可轴向滑动地套接在所述第一轴(4)上，所述第二半离合器(11)连接在所述第二轴(12)上，所述第一半离合器(10)面向所述第二半离合器(11)的端面上形成有第一齿(101)，所述第二半离合器(11)面向所述第一半离合器(10)的端面上形成有第二齿(111)，所述弹性件(9)向所述第一半离合器(10)施加轴向弹性力，以使所述第一齿(101)与第二齿(111)相啮合。
  2. 根据权利要求1所述的车载显示屏装置，其特征在于，所述第一半离合器(10)通过花键连接到所述第一轴(4)上。
  3. 根据权利要求1或2所述的车载显示屏装置，其特征在于，所述第二半离合器(11)过盈配合到所述第二轴(12)上。
  4. 根据权利要求1-3任意一项所述的车载显示屏装置，其特征在于，所述第二半离合器(11)通过花键连接到所述第二轴(12)上。
  5. 根据权利要求1-4任意一项所述的车载显示屏装置，其特征在于，所述第一轴(4)上形成有沿其圆周方向延伸的环形凸台(41)，所述弹性件(9)设置在所述第一半离合器(10)和环形凸台(41)之间。
  6. 根据权利要求1-5任意一项所述的车载显示屏装置，其特征在于，所述传动系统包括减速器(3)，所述电机(2)与减速器(3)传动连接，所述第一轴(4)为所述减速器(3)的输出轴(31)，所述第二轴(12)固定于所述显示屏(17)上。
  7. 根据权利要求1-5任意一项所述的车载显示屏装置，其特征在于，所述传动系统包括减速器(3)，所述电机(2)与减速器(3)传动连接，所述第一轴(4)与所述减速器(3)的输出轴(31)传动连接，所述第二轴(12)固定于所述显示屏(17)上。
  8. 根据权利要求7所述的车载显示屏装置，其特征在于，所述第一轴(4)具有中心轴孔(42)，该中心轴孔(42)的孔壁上形成有内花键，所述减速器(3)的输出轴(31)上设置有与所述内花键相啮合的外花键。
  9. 根据权利要求6-8中任一项所述的车载显示屏装置，其特征在于，所述车载显示屏装置还包括固定机架(1)，所述电机(2)和减速器(3)安装在所述固定机架(1)上，所述固定机架(1)具有安装孔，该安装孔内设置有轴承，所述第一轴(4)通过所述轴承支撑在所述固定机架(1)上。
  10. 根据权利要求9所述的车载显示屏装置，其特征在于，所述轴承包括沿所述第一轴 (4)的轴向间隔布置的第一轴承(6)和第二轴承(7)。
  11. 根据权利要求10所述的车载显示屏装置，其特征在于，所述第一轴(4)上形成有沿其圆周方向延伸的环形凸台(41)，所述第一轴承(6)背离所述第二轴承(7)的一侧抵接于所述环形凸台(41)，所述第一轴承(6)与第二轴承(7)之间设置有定位轴套(8)，所述第二轴承(7)背离所述第一轴承(6)的一侧通过轴用弹性挡圈(5)固定。
  12. 根据权利要求10所述的车载显示屏装置，其特征在于，所述固定机架(1)上设置有第一触点开关(13)和第二触点开关(14)，所述显示屏(17)上固定有触头(15)，当所述显示屏(17)处于横屏状态时，所述触头(15)与所述第一触点开关(13)接触；当所述显示屏(17)处于竖屏状态时，所述触头(15)与所述第二触点开关(14)接触。
  13. 根据权利要求12所述的车载显示屏装置，其特征在于，所述车载显示屏装置还包括电机控制器，该电机控制器用于在接收到显示屏旋转指令后，若所述触头(15)与所述第一触点开关(13)接触，则控制所述电机(2)正转，直至所述触头(15)与所述第二触点开关(14)接触；若所述触头(15)与所述第二触点开关(14)接触，则控制所述电机(2)反转，直至所述触头(15)与所述第一触点开关(13)接触。
  14. 根据权利要求12所述的车载显示屏装置，其特征在于，所述车载显示屏装置还包括固定在所述显示屏(17)背面上的屏后支架(16)，所述第二轴(12)与所述屏后支架(16)一体成型，所述触头(15)固定在所述屏后支架(16)上。
  15. 一种车辆，其特征在于，包括根据权利要求1-14中任一项所述的车载显示屏装置。
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