CN107531152A - 用于机动车辆的显示装置 - Google Patents
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Abstract
本发明涉及一种用于机动车辆的显示装置(1),其包括:包括平面屏幕(7)的显示模块(3),平面屏幕(7)在其后表面上具有安装脚(17),每个安装脚(17)包括用于接收安装螺钉(21)的螺纹孔;以及保持显示模块(3)的壳体(9),所述壳体(9)具有底壁(23),并且所述平面屏幕(7)的安装脚(1)通过旋拧安装在底壁上,其特征在于,它还包括由弹性材料制成的膜(29),该膜被布置在安装脚(17)之间并覆盖每个安装脚(17),以便插入在安装脚(17)和壳体(9)的底壁(23)之间,以及在于平面屏幕(7)的安装螺钉(17)穿过底壁(23)和由弹性材料制成的膜(29),以便与每个脚(17)的螺纹孔接合。
Description
技术领域
本发明涉及一种用于机动车辆的显示装置。
背景技术
该类型的装置有利地应用于机动车辆的控制和显示面板。
机动车辆中的显示装置的出现,特别地包括平面屏幕,正变得越来越普遍。
这些显示装置可以包括单独的平面屏幕,或者可以包括例如与平面屏幕相关联的电容或电阻型的控制触摸板。在后者的情况下,触摸板可用于确定用户手指的压力参数。这些压力然后由包括例如用于控制车辆的各种功能的微处理器的处理单元处理进行处理,所述功能为例如空调、音频系统、电话通信系统、多媒体系统或导航系统的功能。
已知的显示装置与控制和显示面板集成在一起,其中显示装置与其电子控制卡,以及与触摸板,如果存在的话,被集成到壳体中。
这些各种元件的堆叠引起了关于公差的问题。这是因为即使在诸如壳体、显示装置和触摸板的每个元件在序列生产中都以小的公差制作,它们的堆叠也具有相当大的总公差,这是因设计原因而是不能接受的。
对于面向使用者的显示装置的表面与控制和显示面板的仪表板表面齐平的需求也日益增加。还提及“齐平”显示单元,英文术语表示显示装置的表面与面板对齐。
为了实现此,一方面显示装置或触摸屏(如果适当的话)和另一方面容纳显示装置的壳体的诸如实际壁的参考标记之间的距离必须以高的精度,特别地以小于0.2mm的精度进行控制。
发明内容
本发明旨在克服一些上述问题,至少部分地,通过提出一种显示装置,该显示装置相对于壳体上的基准点的定位可以容易且精确地被控制,以便克服机械误差的问题以及连续生产中的公差。
为此,本发明涉及一种机动车辆显示装置,包括:
-一方面,包括平面屏幕的显示模块,该平面屏幕在其后表面上具有紧固脚,每个紧固脚具有用于接收紧固螺钉的螺纹孔,以及
-另一方面,容纳显示模块的壳体,所述壳体具有底壁,通过旋拧将平面屏幕的紧固脚固定在该底壁上,
其特征在于,它还包括放置在紧固脚之间并覆盖每个紧固脚的弹性材料的膜,以便被插入在紧固脚和壳体的底壁之间,以及在于用于紧固平面屏幕的螺钉通过底壁和弹性材料的膜以与每个脚的螺纹孔相互作用。
所述膜易于紧固在显示屏的背面,特别是因为它覆盖所述紧固脚。当紧固螺钉通过所述膜接合时,后者被压缩并且显示模块的沿着方向z的位置可以非常精确地调节。
显示装置可以具有单独或组合考虑的以下特征中的一个或多个:
弹性材料的膜在紧固脚之间拉伸,允许其能够抵靠显示屏的后部放置,从而能使显示屏受到保护以防止灰尘,例如。
弹性材料的膜可以由弹性体,特别是硅树脂制成,并且可以具有在40-60的特别是50的肖氏硬度。
所述装置还包括印刷电路卡,该印刷电路卡位于抵靠所述平面屏幕的后表面定位的弹性材料的膜和壳体的底壁之间。
所述膜还用于保护印刷电路卡,特别是防止灰尘,并且用作密封件,特别是通过封闭印刷电路卡周围的空间。
所述壳体由金属制成,特别是镁。
所述壳体的底壁包括例如与用作接地连接的电路卡的表面接触的凸起,以及所述膜至少在壳体的底壁的凸起之一的位置处包括用于将印刷电路卡朝向壳体的底壁的该凸起挤压的压缩螺柱。
所述膜的压缩螺柱可确保甚至在存在显示装置可能受到的强烈振动的情况下也能保持接地连接。
显示模块还可以包括紧固到平面显示屏幕的触摸板。
例如,触摸板通过双面粘合剂被紧固到平面显示屏幕。
本发明还涉及一种用于组装如上所述的显示装置的方法,其特征在于,通过紧固螺钉穿过壳体的底壁,通过与紧固脚中的螺纹孔相互作用,来紧固所述平面屏幕,以及在一方面平面屏幕或位于平面屏幕上的触摸板和另一方面所述壳体的底壁的后表面上的基准之间的距离被调节到预定值。
根据一特定方面,在一方面所述平面屏幕或位于该平面屏幕上的触摸板和另一方面在所述壳体的底壁的后表面上的基准之间的距离是在旋拧操作期间被测量的,并且在达到预定值时停止旋拧。
本发明的其它特征和优点将从以下通过非限制性示例提供的描述并参考附图是显而易见的,附图以截面图示出了根据本发明的显示装置的示例性实施例。
附图说明
在图1中,附图标记1表示根据示例性实施例的用于机动车辆的整个显示装置1。
具体实施方式
例如,这样的显示装置1可以安装在仪表板上,例如安装在中央位置,以便驾驶员和车辆中的乘客都能接近。
根据所示的示例,如从图1的顶部朝向底部看到的,显示装置1一方面包括由触摸板5和平面显示屏幕7形成的显示模块3,以及在另一方面,容纳该显示模块3的壳体9。
显示模块3的触摸板5例如是制成透明的电容式触摸板,以便能够观看显示在平面显示屏幕7上的信息。
因此,触摸板5可以由玻璃或透明聚碳酸酯的两个刚性透明板制成,例如通过光学粘合剂彼此粘合并且具有夹在它们之间的透明电气轨道,这些轨道连接到用于电容检测的电子单元。上板可以涂覆偏光膜,以提高平面屏7在所有环境光条件下的可视性。
例如,触摸板5通过用双面粘合剂11粘接到平面屏幕7上被紧固。
在显示模块3的简化版本(未示出)中,后者仅包括平面显示屏幕7。
平面屏幕7例如是液晶或TFT屏幕,LCD或LED屏幕或OLED屏幕。与具有LED,LCD或其他装置的面相反的平面屏幕的后表面13,以及侧面15由刚性支撑框架形成。
为了将平面屏幕7紧固在壳体9中,后表面13具有紧固脚17,每个紧固脚17包括用于接收紧固螺钉21的螺纹孔。
例如,如下所述的,壳体9由金属制成,以便将任何静电排放到地面。所使用的金属优选为镁,特别地高纯度镁,由于其重量轻,机械强度高,耐腐蚀性好,甚至没有后处理,并且易于成型,例如通过低压模制(或“压铸”,如它在英文中称为的)。
壳体9具有底壁23和侧壁25。因此它在顶部是敞开的(如图1所示)。
在其底壁23的后表面上,壳体9包括基准或基准点27,从其到触摸板5的上表面的距离D,或者对于没有触摸板5的简化版本,到平面屏幕7的上表面的距离,必须精确调节。
显示装置1还包括弹性材料的膜29,特别是弹性体,特别是硅树脂。
膜29具有例如40至60的特别地50的肖氏硬度。
特别地,膜29被定位成在紧固脚17之间延伸,并且覆盖每个紧固脚17,以便插入在紧固脚17和壳体9的底壁23之间。
平面屏幕7的紧固螺钉21穿过底壁23和弹性材料的膜29,以便与每个紧固脚17中的螺纹孔相互作用。紧固螺钉21例如配备有锁定装置,特别是聚酰胺锁定装置,以防止例如由于振动引起的任何不合时宜的旋拧开。
因此,膜29容易地紧固在平面屏幕7的后部上,特别是因为其覆盖具有要定位的单个部件的紧固脚17。当紧固螺钉21通过膜29接合时,后者可以被压缩,并且显示模块的沿着方向z的位置,以及因此距离D,可以相对于壳体9的基准点27被非常精确地调节。
应当注意到,旋拧螺钉21的操作不是基于扭矩而是基于要提供在显示模块3和一个或多个基准27之间的距离D来停止。膜29可以因此被压缩以补偿显示装置1的各种元件的制造误差或公差。
另外,壳体9的底壁23的面31具有凸起33,印刷电路卡35位于在该凸起33上,该卡例如用于控制触摸板5并通过多导体扁平电缆(未示出)电连接到其上。
因此,印刷电路卡35位于弹性材料的膜29和壳体9的底壁23之间。
因此,膜29还用于保护印刷电路卡35,特别是防止灰尘,并用作密封件。
与凸起33接触的印刷电路卡35的至少一个区域,特别地中心区域33C,是导电的并且用作印刷电路卡35的接地和壳体9之间的电连接,以便将任何静电放电引导到地面,从而防止对触摸板5的损坏。
为了确保甚至在困难的条件下也能够提供该功能,特别是在强振动的情况下,膜29至少在凸起33C的位置处包括压缩螺柱37,以将印刷电路卡35压靠在壳体9的底壁23的该凸起33C上。
膜29的压缩螺柱37确保甚至在存在显示装置1可能受到的强烈振动的情况下也提供和维持接地连接。
为了组装上述显示装置1,通过紧固螺钉21穿过壳体9的底壁23,通过与紧固脚17中的螺纹孔相互作用,所述平面屏幕7被紧固,以及一方面平面屏幕7或位于平面屏幕7上的触摸板5和另一方面在壳体9的底壁23的后面上的基准27之间的距离D被调节到预定值。
也提供以测量在旋拧操作期间的距离D,以及在达到预定值时停止旋拧。因此,组装过程可以是自动的,并且基于距离D的测量来控制旋拧。
显然,根据本发明的显示装置1可以以较小的制造尺寸误差来制作。膜29不仅用作使制造公差得到控制的缓冲器,而且还用于一方面保护印刷电路卡35免受灰尘,以及另一方面防止静电放电的潜在有害影响。
Claims (11)
1.一种用于机动车辆的显示装置(1),包括:
-一方面,包括平面屏幕(7)的显示模块(3),该平面屏幕(7)在其后表面上具有紧固脚(17),每个紧固脚(17)具有用于接收紧固螺钉(21)的螺纹孔,以及
-另一方面,容纳所述显示模块(3)的壳体(9),所述壳体(9)具有底壁(23),所述平面屏幕(7)的紧固脚(1)通过旋拧被紧固到所述底壁,其特征在于,它还包括弹性材料的膜(29),该弹性材料的膜被放置在紧固脚(17)之间并且覆盖每个紧固脚(17),以便插入在紧固脚(17)和壳体(9)的底壁(23)之间,以及在于用于紧固所述平面屏幕(7)的螺钉(21)穿过底壁(23)和弹性材料的膜(29),以与每个脚(17)的螺纹孔相互作用。
2.根据权利要求1所述的装置,其特征在于,弹性材料的膜(29)在紧固脚(17)之间延伸。
3.根据权利要求1或2所述的装置,其特征在于,弹性材料的膜(29)由弹性体,特别是硅酮,制成。
4.根据权利要求1至3中任一项所述的装置,其特征在于,所述膜(29)的弹性材料具有例如40至60的范围内的肖氏硬度,特别是50。
5.根据权利要求1至4中任一项所述的装置,其特征在于,它还包括印刷电路卡(35),该印刷电路卡(35)位于抵靠所述平面屏幕(7)的后表面定位的所述弹性材料的膜(29)和壳体(9)的底壁(23)之间。
6.根据权利要求1至5中任一项所述的装置,其特征在于,所述壳体(9)由金属,特别是镁,制成。
7.根据结合考虑的权利要求6和7中任一项所述的装置,其特征在于,所述壳体的底壁(23)包括凸起(33),该凸起与用作接地连接的所述电路卡(35)的面接触,以及在于,所述膜(29)至少在所述壳体(9)的底壁(23)的凸起(33C)之一的位置处包括用于将印刷电路卡(35)朝向述壳体(9)的底壁(23)的该凸起(33C)压紧的压缩螺柱(37)。
8.根据权利要求1至7中任一项所述的装置,其特征在于,所述显示模块(3)还包括紧固到所述平面显示屏幕(7)的触摸板(5)。
9.根据权利要求8所述的装置,其特征在于,所述触摸板(5)通过双面粘合剂(11)被紧固到所述平面显示屏幕(7)。
10.一种用于组装如权利要求1至9中任一项所述的显示装置的方法,其特征在于,通过紧固螺钉(21)穿过所述壳体(9)的底壁(23)、通过与所述紧固脚(17)中的螺纹孔相互作用来紧固所述平面屏幕(7),以及在一方面所述平面屏幕(7)或位于该平面屏幕(7)上的触摸板(5)和另一方面所述壳体(9)的底壁(23)的后表面上的基准(27)之间的距离(D)被调节为预定值。
11.根据权利要求10所述的方法,其特征在于,在一方面所述平面屏幕(7)或位于所述平面屏幕(7)上的触摸板(5)和另一方面所述壳体的底壁(23)的后表面上的基准(27)之间的距离(D)是在旋拧操作期间被测量的,以及当达到预定值(D)时所述旋拧停止。
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CN113853322A (zh) * | 2019-05-28 | 2021-12-28 | 贝尔-赫拉恒温控制有限公司 | 用于车辆的显示装置 |
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