WO2013189090A1 - 一种液晶显示装置用钣金件、制造方法及液晶显示装置 - Google Patents

一种液晶显示装置用钣金件、制造方法及液晶显示装置 Download PDF

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Publication number
WO2013189090A1
WO2013189090A1 PCT/CN2012/077494 CN2012077494W WO2013189090A1 WO 2013189090 A1 WO2013189090 A1 WO 2013189090A1 CN 2012077494 W CN2012077494 W CN 2012077494W WO 2013189090 A1 WO2013189090 A1 WO 2013189090A1
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WIPO (PCT)
Prior art keywords
sheet metal
liquid crystal
crystal display
display device
inner hole
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2012/077494
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English (en)
French (fr)
Inventor
王利锋
余亚军
张彦学
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/577,739 priority Critical patent/US20130343812A1/en
Publication of WO2013189090A1 publication Critical patent/WO2013189090A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/02—Nuts or like thread-engaging members made of thin sheet material

Definitions

  • Sheet metal member for liquid crystal display device manufacturing method and liquid crystal display device
  • the present invention relates to the field of liquid crystal display, and more particularly to a sheet metal member for a liquid crystal display device, a manufacturing method, and a liquid crystal display device.
  • the existing liquid crystal display device includes a backlight module, and the backlight module specifically includes a front frame, a middle frame, a back plate, a light source, a light guide plate, a liquid crystal panel and the like, wherein the front frame and the back plate can be stamped by a thin sheet metal.
  • these sheet metal parts are provided with screw holes on the sheet metal parts.
  • the sheet metal parts are generally formed on the sheet metal parts. The hole flanging 1, and then the internal thread 3 is made on the inner hole 2 of the cuff 1 .
  • the thickness of the sheet metal parts used now is getting thinner and thinner, and the wall thickness of the screw holes is also thinner and thinner, which leads to a decrease in the strength of the screw holes, and the torque that the screw holes can withstand becomes smaller and smaller, resulting in the reliability of the locking.
  • the torsion force can be 18kgf.
  • a sheet metal member with a thickness of 0.6 mm SECC it can withstand a torque of only 9 kgf, which is easy to reach the torque requirement, and further affects the further thinning of the sheet metal part.
  • the technical problem to be solved by the present invention is to provide a sheet metal member for a liquid crystal display device, a manufacturing method, and a liquid crystal display device, wherein the screw hole on the sheet metal member has higher strength and can withstand greater torque.
  • the technical solution of the present invention is: a sheet metal member for a liquid crystal display device, wherein the sheet metal member is provided with an inner hole flange, the flange is provided with an internal thread, and the inner hole has at least one circumference on a circumference A projection that protrudes in the direction of the center of the circle.
  • the outline of the protrusion is an inner arc, an outer arc or a straight line.
  • the inner hole has a plurality of protrusions on the circumference of the cross section, and the plurality of protrusions are evenly distributed. Placed on the circumference of the inner hole.
  • the protrusions are evenly arranged, so that the wall thickness of the screw holes can be made regular, and the torsion force can be more stable.
  • the inner hole has two protrusions on the circumference of the cross section, and the two protrusions are arranged at 180 degrees apart.
  • the inner bore has three projections on the circumference of the cross section, and the three projections are arranged at intervals of 120 degrees.
  • the inner hole has two protrusions on the circumference of the cross section, and the contour of each protrusion is a half ellipse, and the contours of the two protrusions form a complete ellipse.
  • the sheet metal member is a back sheet.
  • the invention also discloses a method for manufacturing a sheet metal member for a liquid crystal display device, comprising the steps of: pre-punching a small hole on a sheet metal member, and at least one convex portion protruding in a circumferential direction on the circumference of the small hole Ministry
  • an inner hole flanging is performed at the small hole, and at least one convex portion protruding toward the center of the circle is formed on the circumference of the cross section of the inner hole of the cuff;
  • the internal thread is tapped on the flange.
  • the method further comprises the steps of: punching out the convex hull on the sheet metal, and then flattening the top of the convex hull, the top of the convex hull being used for molding the small The hole and the inner hole are turned over.
  • This method does not increase the process and does not introduce new technology.
  • it is only necessary to replace the different stamping die punches, that is, to replace the original cylindrical punch with a punch having a concave portion.
  • a liquid crystal display device comprising the above-described sheet metal member.
  • the sheet metal member for liquid crystal display device of the present invention comprises an inner hole flange, the flange is provided with an internal thread, and at least one of the inner hole cross-section has a convex shape protruding toward the center of the circle a protruding portion, the protruding portion changes the shape of the inner hole, so that the inner hole is no longer a complete circular hole, and after the standard internal thread is tapped on the flange, the depth of the thread at the protruding portion is deeper , to withstand more torque, the thread at the other parts is shallower, the thickness of the thread is thicker, and the strength of the inner hole is increased, thereby improving the snail as a whole. The reliability of the nail hole locking. [Description of the Drawings]
  • FIG. 1 is a schematic structural view of a hole in a metal sheet of a liquid crystal display device in the prior art
  • FIG. 2 is a cross-sectional view taken along line A-A of FIG.
  • FIG. 3 is a schematic view showing the structure of the inner hole flanging of the sheet metal member for the liquid crystal display device of the present invention
  • FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;
  • Figure 5 is a cross-sectional view taken along line C-C of Figure 3;
  • FIG. 6 is a schematic view showing the structure of the inner hole flanging of the sheet metal member for the liquid crystal display device of the present invention
  • FIG. 7 is a schematic view showing the inner hole flanging structure of the third embodiment of the sheet metal member for the liquid crystal display device of the present invention
  • It is a schematic diagram of the inner hole flanging structure of the fourth embodiment of the sheet metal member for the liquid crystal display device of the present invention.
  • the present invention discloses a liquid crystal display device including a sheet metal member.
  • a sheet metal member for a liquid crystal display device of the present invention as shown in FIGS. 3 to 5, the sheet metal member is provided with an inner hole flange. 1 .
  • the flange 1 is provided with an internal thread 3
  • the inner hole 2 has at least one protrusion 4 protruding in the center of the circle on the circumference of the cross section.
  • the inner hole 2 has two protrusions 4 on the circumference of the cross section, and the two protrusions 4 are arranged at 180 degrees apart.
  • the sheet metal member for liquid crystal display device of the present invention comprises an inner hole flange 1 , and the flange 1 is provided with an internal thread 3, and the inner hole 2 has at least one protrusion protruding from the center of the cross section toward the center of the circle. 4, the protrusion 4 changes the shape of the inner hole 2, so that the inner hole 2 is no longer a complete circular hole, after the standard internal thread 3 is tapped on the flange 1, as shown in FIG.
  • the thread at the exit is deeper and bears more torque.
  • the thread at the other part has a shallower tooth depth, and the thread thickness is thicker, which increases the strength of the inner hole 2, so that the whole is Improve the reliability of screw hole locking.
  • the liquid crystal display device uses a sheet metal member, and the back plate is taken as an example, and the thinnest back plate thickness is 0.6mm, and the back sheet using the sheet metal structure of the present invention requires only a sheet metal having a thickness of 0.5 mm, and the screw holes can obtain the same level of torque, which significantly reduces the material cost.
  • the sheet metal member can also be a front frame.
  • the invention also discloses a method for manufacturing a sheet metal member for a liquid crystal display device, comprising the steps of: pre-punching a small hole on a sheet metal member, and at least one convex portion protruding in a circumferential direction on the circumference of the small hole Ministry
  • an inner hole flanging is performed at the small hole, and at least one convex portion protruding toward the center of the circle is formed on the circumference of the cross section of the inner hole of the cuff;
  • the internal thread is tapped on the flange.
  • the liquid crystal display device of the present invention can manufacture the sheet metal member described above by using a sheet metal manufacturing method, and achieve the above-mentioned advantageous effects, the method does not increase the process, does not introduce a new technology, and is based on the existing stamping method. In the above, it is only necessary to replace the punch of the different stamping die, that is, to replace the original cylindrical punch with a punch having a concave portion.
  • Pre-punching the small hole on the sheet metal part and the inner hole flanging at the small hole can be completed by one set of stamping die in one stamping process, and only the die punch has a stepped structure.
  • the method further comprises the steps of: punching out the convex hull on the sheet metal, and then placing the top of the convex hull Flattening, the top of the convex hull is used to form the small hole and the inner hole flange.
  • the flange formed by the method is lower than the plane of the sheet metal member and does not interfere with the internal structure of the liquid crystal display device.
  • the outline of the projection 4 is an outer arc, and of course, it may be a straight line or an inner arc.
  • the inner hole 2 has two protrusions 4 on the circumference of the cross section, and the two protrusions 4 are arranged at intervals of 180 degrees, and of course, may be multiple places.
  • a protruding portion the plurality of protruding portions are evenly arranged on the circumference of the inner hole, and the protruding portions are evenly arranged, so that the wall thickness of the screw hole is in a regular state, and the torsion force can be more stable, for example, three protruding portions.
  • the inner hole 2 has two protruding portions 4 on the circumference of the cross section, and the protruding portion 4 has a long length.
  • the outline of the projection 4 is an inner arc, and the advantageous effects as described in the first embodiment can be achieved as well.
  • the inner hole 2 has two projections 4 on the circumference of the cross section, and the outline of each projection 4 is half.
  • the elliptical shape, the outline of the two projections 4 constitutes a complete ellipse, and the advantageous effects as described in the first embodiment can be achieved.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Description

一种液晶显示装置用钣金件、 制造方法及液晶显示装置
【技术领域】
本发明属于液晶显示领域， 更具体的说， 涉及一种液晶显示装置用钣金件、 制造方法及液晶显示装置。
【背景技术】
现有的液晶显示装置包括背光模组， 背光模组又具体包括前框、 中框、 背 板、 光源、 导光板、 液晶面板等部件， 其中前框、 背板都可以由薄型钣金沖压 而成， 这些钣金件为了与其它的部件连接， 会在钣金件上设置螺釘孔， 为了增 加与螺釘的配合长度，如图 1和图 2所示，一般会在钣金件上制作出内孔翻边 1 , 然后在翻边 1的内孔 2上做出内螺纹 3。 为了降低成本， 现在采用的钣金件厚度 越来越薄， 螺釘孔的壁厚也越来越薄， 导致螺釘孔的强度降低， 螺釘孔可承受 的扭力越来越小， 导致锁附可靠性降低， 以 M4的螺釘孔为例， 在同样的螺纹配 合长度、同样的螺纹牙深情况下，采用厚度为 0.8mmSECC材料（电解镀辞钢板） 的钣金件时， 能承受的扭力为 18kgf, 而采用厚度为 0.6mmSECC材料的钣金件 时， 能承受扭力只有 9kgf, 容易达不到扭力要求， 而且影响钣金件的进一步薄 板化。
【发明内容】
本发明所要解决的技术问题是提供一种液晶显示装置用钣金件、 制造方法 及液晶显示装置， 所述钣金件上的螺釘孔强度更高， 能承受更大的扭力。
本发明的技术方案为： 一种液晶显示装置用钣金件， 所述钣金件上设有内 孔翻边， 所述翻边设有内螺纹， 所述内孔横截面圓周上至少有一处向圓心方向 凸出的凸出部。
优选的， 所述凸出部的轮廓线为内弧线、 外弧线或直线。
优选的， 所述内孔横截面圓周上有多处凸出部， 所述多处凸出部均匀地布 置在内孔圓周上。 凸出部均匀布置， 可以使螺釘孔的壁厚呈规则状态， 可承受 的扭力更稳定。
优选的， 所述内孔横截面圓周上有二处凸出部， 所述两处凸出部相隔 180 度布置。
优选的， 所述内孔横截面圓周上有三处凸出部， 所述三处凸出部相隔 120 度布置。
优选的， 所述内孔横截面圓周上有二处凸出部， 每个凸出部的轮廓线为半 个橢圓形， 二处凸出部的轮廓线组成一个完整的橢圓。
优选的， 所述钣金件为背板。
本发明还公开了一种液晶显示装置用钣金件的制造方法， 包括以下步骤： 在钣金件上预先沖出小孔， 所述小孔圓周上至少有一处向圓心方向凸出的 凸出部；
然后在小孔处进行内孔翻边， 所述翻边内孔横截面的圓周上至少有一处向 圓心方向凸出的凸出部；
在翻边上攻出内螺纹。
优选的， 在钣金件上预先沖出小孔步骤之前， 还包括步骤： 在钣金上沖出 凸包， 然后把凸包的顶部压平， 所述凸包的顶部用于成型所述小孔及内孔翻边。
该方法不增加工序， 不引入新技术， 在现有沖压方式的基础上， 只需更换 不同的沖压模具沖头， 即把原来圓柱状的沖头更换为带有内凹部的沖头即可。
本发明还公开了另一种技术方案： 一种液晶显示装置， 包括上面所述的钣 金件。
本发明的有益效果为： 本发明所述液晶显示装置用钣金件包括内孔翻边， 所述翻边设有内螺纹， 所述内孔横截面圓周上至少有一处向圓心方向凸出的凸 出部， 所述凸出部改变了内孔的形状， 使内孔不再是完整的圓孔， 在翻边上攻 出标准的内螺纹后， 在凸出部处螺纹的牙深较深， 承受更多的扭力， 其它部位 处的螺纹的牙深较浅， 螺纹壁厚较厚， 提高内孔的强度， 从而在整体上提高螺 釘孔锁附的可靠性。 【附图说明】
图 1是现有技术中液晶显示装置用钣金件内孔翻边的结构示意图； 图 2是图 1中 A-A向剖示图；
图 3是本发明所述液晶显示装置用钣金件实施例一内孔翻边结构示意图； 图 4是图 3中 B-B向剖示图；
图 5是图 3中 C-C向剖示图；
图 6是本发明所述液晶显示装置用钣金件实施例二内孔翻边结构示意图； 图 7是本发明所述液晶显示装置用钣金件实施例三内孔翻边结构示意图； 图 8是本发明所述液晶显示装置用钣金件实施例四内孔翻边结构示意图。 其中： 1、 翻边； 2、 内孔； 3、 内螺纹； 4、 凸出部。
【具体实施方式】
本发明公开一种液晶显示装置， 包括钣金件， 作为本发明液晶显示装置用 钣金件的实施例一， 如图 3至图 5所示， 所述钣金件上设有内孔翻边 1 , 所述翻 边 1设有内螺纹 3 ,所述内孔 2横截面圓周上至少有一处向圓心方向凸出的凸出 部 4。 本实施例中， 所述内孔 2横截面圓周上有二处凸出部 4, 所述两处凸出部 4相隔 180度布置。
本发明所述液晶显示装置用钣金件包括内孔翻边 1 ,所述翻边 1设有内螺纹 3 , 所述内孔 2横截面圓周上至少有一处向圓心方向凸出的凸出部 4, 所述凸出 部 4改变了内孔 2的形状， 使内孔 2不再是完整的圓孔， 在翻边 1上攻出标准 的内螺纹 3后， 如图 4所示， 在凸出部处螺纹的牙深较深， 承受更多的扭力， 如图 5所示， 其它部位处的螺纹的牙深较浅， 螺纹壁厚较厚， 提高内孔 2的强 度， 从而在整体上提高螺釘孔锁附的可靠性。
现有技术中液晶显示装置用钣金件， 以背板为例， 最薄的背板厚度为 0.6mm, 而采用本发明所述钣金件结构的背板， 只需要厚度为 0.5mm的钣金， 螺釘孔就可以获得同等的扭力水平， 显著地降低材料成本。 当然所述钣金件也 可为前框。
本发明还公开了一种液晶显示装置用钣金件的制造方法， 包括以下步骤： 在钣金件上预先沖出小孔， 所述小孔圓周上至少有一处向圓心方向凸出的 凸出部；
然后在小孔处进行内孔翻边， 所述翻边内孔横截面的圓周上至少有一处向 圓心方向凸出的凸出部；
在翻边上攻出内螺纹。
本发明液晶显示装置用钣金件的制造方法可以制造出上面所述的钣金件， 并实现上面所述的有益效果， 该方法不增加工序， 不引入新技术， 在现有沖压 方式的基础上， 只需更换不同的沖压模具沖头， 即把原来圓柱状的沖头更换为 带有内凹部的沖头即可。
在钣金件上预先沖出小孔和在小孔处进行内孔翻边， 可以由一套沖压模具 在一次沖压过程中完成， 只需要模具沖头具有台阶结构即可。
为了防止钣金件的翻边与液晶显示装置的内部结构相互干涉， 在钣金件上 预先沖出小孔步骤之前， 还包括步骤： 在钣金上沖出凸包， 然后把凸包的顶部 压平， 所述凸包的顶部用于成型所述小孔及内孔翻边。 本方法成型的翻边低于 钣金件的平面， 不会与液晶显示装置的内部结构相互干涉。
在液晶显示装置用钣金件的实施例一中，所述凸出部 4的轮廓线为外弧线， 当然也可为直线， 或者内弧线。
在液晶显示装置用钣金件的实施例一中， 所述内孔 2横截面圓周上有二处 凸出部 4, 所述两处凸出部 4相隔 180度布置， 当然也可以为多处凸出部， 所述 多处凸出部均匀地布置在内孔圓周上， 凸出部均匀布置， 可以使螺釘孔的壁厚 呈规则状态， 可承受的扭力更稳定， 比如为三处凸出部， 所述三处凸出部相隔 120度布置， 又或者如图 6所示液晶显示装置用钣金件的实施例二中， 所述内孔 2横截面圓周上有六处凸出部 4, 所述六处凸出部相隔 60度布置。
作为本发明液晶显示装置用钣金件的实施例三， 如图 7所示， 所述内孔 2 横截面圓周上有二处凸出部 4, 所述凸出部 4长度较长， 所述凸出部 4的轮廓线 为内弧线， 同样能实现如实施例一中所述的有益效果。
作为本发明液晶显示装置用钣金件的实施例四， 如图 8所示， 所述内孔 2 横截面圓周上有二处凸出部 4, 每个凸出部 4的轮廓线为半个橢圓形， 二处凸出 部 4的轮廓线组成一个完整的橢圓， 能实现如实施例一中所述的有益效果。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明， 不 能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通 技术人员来说， 在不脱离本发明构思的前提下， 还可以做出若干筒单推演或替 换， 都应当视为属于本发明的保护范围。

Claims

权利要求
1、 一种液晶显示装置用钣金件， 所述钣金件上设有内孔翻边， 所述翻边设 有内螺纹， 所述内孔横截面圓周上至少有一处向圓心方向凸出的凸出部。
2、 如权利要求 1所述的液晶显示装置用钣金件， 其中， 所述凸出部的轮廓 线为内弧线、 外弧线或直线。
3、 如权利要求 1所述的液晶显示装置用钣金件， 其中， 所述内孔横截面圓 周上有多处凸出部， 所述多处凸出部均勾地布置在内孔圓周上。
4、 如权利要求 3所述的液晶显示装置用钣金件， 其中， 所述内孔横截面圓 周上有二处凸出部， 所述两处凸出部相隔 180度布置。
5、 如权利要求 3所述的液晶显示装置用钣金件， 其中， 所述内孔横截面圓 周上有三处凸出部， 所述三处凸出部相隔 120度布置。
6、 如权利要求 2所述的液晶显示装置用钣金件， 其中， 所述内孔横截面圓 周上有二处凸出部， 每个凸出部的轮廓线为半个橢圓形， 二处凸出部的轮廓线 组成一个完整的橢圓。
7、如权利要求 3所述的液晶显示装置用钣金件， 其中， 所述钣金件为背板。
8、 一种液晶显示装置用钣金件的制造方法， 包括以下步骤：
在钣金件上预先沖出小孔， 所述小孔圓周上至少有一处向圓心方向凸出的 凸出部；
然后在小孔处进行内孔翻边， 所述翻边内孔横截面的圓周上至少有一处向 圓心方向凸出的凸出部；
在翻边上攻出内螺纹。
9、 如权利要求 8所述的液晶显示装置用钣金件的制造方法， 其中， 在钣金 件上预先沖出小孔步骤之前， 还包括步骤： 在钣金上沖出凸包， 然后把凸包的 顶部压平， 所述凸包的顶部用于成型所述小孔及内孔翻边。
10、 一种液晶显示装置， 包括钣金件， 所述钣金件上设有内孔翻边， 所述 翻边设有内螺纹， 所述内孔横截面圓周上至少有一处向圓心方向凸出的凸出部。
11、 如权利要求 10所述的液晶显示装置， 其中， 所述凸出部的轮廓线为内 弧线、 外弧线或直线。
12、 如权利要求 10所述的液晶显示装置， 其中， 所述内孔横截面圓周上有 多处凸出部， 所述多处凸出部均勾地布置在内孔圓周上。
13、 如权利要求 12所述的液晶显示装置， 其中， 所述内孔横截面圓周上有 二处凸出部， 所述两处凸出部相隔 180度布置。
14、 如权利要求 12所述的液晶显示装置， 其中， 所述内孔横截面圓周上有 三处凸出部， 所述三处凸出部相隔 120度布置。
15、 如权利要求 11所述的液晶显示装置， 其中， 所述内孔横截面圓周上有 二处凸出部， 每个凸出部的轮廓线为半个橢圓形， 二处凸出部的轮廓线组成一 个完整的橢圓。
16、 如权利要求 12所述的液晶显示装置， 其中， 所述钣金件为背板。
PCT/CN2012/077494 2012-06-21 2012-06-26 一种液晶显示装置用钣金件、制造方法及液晶显示装置 Ceased WO2013189090A1 (zh)

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CN202870429U (zh) * 2012-11-13 2013-04-10 深圳市华星光电技术有限公司 一种液晶显示装置用钣金件及液晶显示装置
CN106131464A (zh) * 2016-06-23 2016-11-16 青岛海信电器股份有限公司 背板结构及显示终端

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