WO2012012991A1 - 一种弹性卡固件及液晶模组 - Google Patents

一种弹性卡固件及液晶模组 Download PDF

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Publication number
WO2012012991A1
WO2012012991A1 PCT/CN2010/079028 CN2010079028W WO2012012991A1 WO 2012012991 A1 WO2012012991 A1 WO 2012012991A1 CN 2010079028 W CN2010079028 W CN 2010079028W WO 2012012991 A1 WO2012012991 A1 WO 2012012991A1
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WO
WIPO (PCT)
Prior art keywords
elastic piece
liquid crystal
elastic
crystal module
head
Prior art date
Application number
PCT/CN2010/079028
Other languages
English (en)
French (fr)
Inventor
张田
Original Assignee
深圳市华星光电技术有限公司
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 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US12/997,490 priority Critical patent/US8564734B2/en
Publication of WO2012012991A1 publication Critical patent/WO2012012991A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/06—Releasable fastening devices with snap-action
    • F16B21/07—Releasable fastening devices with snap-action in which the socket has a resilient part
    • F16B21/073—Releasable fastening devices with snap-action in which the socket has a resilient part the socket having a resilient part on its inside
    • 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
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
    • F16B5/0607—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other
    • F16B5/0621—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship
    • F16B5/0635—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship fastened over the edges of the sheets or plates
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/13332—Front frames
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/46—Fixing elements
    • G02F2201/465—Snap -fit

Definitions

  • the invention relates to an elastic card firmware and a liquid crystal module having the same, belonging to the technical field of flat panel display. Background technique
  • the LCD Module is a combination of a liquid crystal panel (panel) and a backlight assembly.
  • the liquid crystal panel and the backlight assembly are assembled to form a whole. But at work, they are independent of each other (that is, the circuits are not related).
  • FIG. 1 is a schematic exploded view of a typical liquid crystal module.
  • the liquid crystal module mainly comprises the following components: a back plate 10, a reflection sheet 20, a backlight tube 30, an optical film 40, a panel 50, and a front frame 60.
  • the back plate 10, the reflection sheet 20, the backlight tube 30, the optical film 40, the panel 50, and the front frame 60 are sequentially stacked to form an integral liquid crystal module.
  • the back plate 10 and the front frame 60 it is necessary to maintain a certain distance to set the reflection sheet 20, the backlight tube 30, etc., and also need reliable connection and fixing to ensure the positioning and resistance of each part of the module. Impact ability.
  • connection between the front frame and the back panel of the existing liquid crystal module includes the following two types.
  • the first is the snap connection. Since the clearance between the metal snaps is extremely small, care must be taken when installing. On the other hand, because the buckle does not have Pre-tightening action, therefore, in order to reduce the adverse effect of the impact on the LCD panel, a relatively thick cushioning material is generally stuck at the front frame, and a large gap is reserved at the periphery to eliminate the influence of the manufacturing error of the buckle. Therefore, this type of snap connection is not only time-consuming in the installation process, but also inferior to shock and vibration. Since the thickness of the buffer material is increased, the thickness of the liquid crystal module is also increased.
  • the second is the screw connection. Since the screw connection method is used, since the number of screws is large, and the screw rotation fixing process takes a certain time, the connection process in this manner is time consuming. On the other hand, since the screw connection is a rigid connection, the buffering performance to the LCD panel is poor. Therefore, in order to eliminate the adverse effect of excessive local deformation on the LCD panel when the screw is tightened, it is necessary to apply a thicker buffer material to the front frame, which significantly increases the thickness of the entire liquid crystal module.
  • the existing liquid crystal module connection methods have the disadvantages of complicated installation process, poor impact resistance, and large thickness of the liquid crystal module. Therefore, it is necessary to provide a liquid crystal module adopting a new connection method to solve the problems existing in the prior art. Summary of the invention
  • the main object of the present invention is to provide an elastic card fastener for connecting a front frame and a back plate of a liquid crystal module.
  • Another object of the present invention is to provide a liquid crystal module having the elastic fastener.
  • the present invention discloses an elastic card fastener having a resilient piece and a cylinder, wherein the elastic piece has a connecting portion for fixing the elastic piece and is used for a cylindrical engaging abutting portion, the post having a body for fixing the post and a fitting portion for engaging with the abutting portion, the engaging portion having a head and a neck at one end thereof Wherein the neck is located between the head and the body, the smallest dimension of the neck is smaller than the size of the head, and the abutting portion is in contact with the outside of the neck when fixed.
  • the abutting portion of the elastic piece is two opposite arc-shaped openings, or a rectangular opening, or an arc that cooperates with the cylinder on the opposite side. Two bends of the shape, the gap being formed between the bends.
  • the elastic piece is two oppositely disposed tongue pieces.
  • the elastic piece further has a guiding portion, and the guiding portion extends obliquely from the connecting portion to the abutting portion.
  • the present invention provides a liquid crystal module having the above-mentioned elastic fasteners, which are sequentially mounted by a backboard, a panel, and a front frame, wherein the liquid crystal module further includes:
  • a plurality of the elastic card fasteners are disposed between the backboard and the front frame to connect the backboard and the front frame.
  • the cylinder is riveted, screwed or welded to the backing or front frame.
  • the shrapnel is stamped directly onto the back or front frame, or the shrapnel is a separate component added to the back or front frame.
  • the elastic card fastener provided by the invention adopts an elastic connection manner, so that the connection is reliable, the assembly is simple, and the impact resistance is good.
  • the liquid crystal module using the elastic card firmware can significantly save the use of the buffer material, so the thickness of the module can be significantly reduced, and the technical trend of the development of the LCD TV in the direction of thinning and thinning is met.
  • FIG. 1 is a schematic exploded view of a typical liquid crystal module
  • Figure 2 is a cross-sectional view showing the elastic fastener of the first embodiment of the present invention
  • Figure 3 is a perspective view of the front frame having the elastic fastener shown in Figure 2;
  • FIG. 4A is a schematic view of a liquid crystal module having the elastic fastener shown in FIG. 2;
  • FIG. 4B is a partially enlarged elastic card mounting installation of the upper and lower sides of the front frame of FIG. 4A;
  • Figure 5 is a schematic view showing the installation of a partially enlarged elastic fastener on the left and right sides of the front frame of Figure 4A;
  • Figure 6 is a perspective view showing the elastic fastener of the second embodiment of the present invention
  • Figure 7 is a cross-sectional view of the elastic fastener of Figure 6;
  • Figure 8 is a perspective view of a spring piece according to a third embodiment of the present invention.
  • FIG. 9A is a perspective view of a cylinder according to a third embodiment of the present invention.
  • 9B is a schematic view showing a modification of the cylinder according to the third embodiment of the present invention.
  • Fig. 9C is a schematic view showing another modification of the cylinder of the third embodiment of the present invention. detailed description
  • Fig. 2 is a schematic cross-sectional view showing an elastic fastener according to a first embodiment of the present invention.
  • the elastic fastener 1 of the present invention comprises a resilient piece 2 formed by symmetrical arrangement of two tongue pieces and a cylindrical body 3 having an arc-shaped fitting surface 31.
  • the arc-shaped mating face 31 of the cylinder 3 may be a spherical portion or may be any arc that facilitates the passage of the head 32 of the cylinder 3 through the elastic piece 2, which is determined by actual use. In the present embodiment, only the spherical mating surface will be described as an example.
  • Figure 3 is a perspective view of the front frame 200 having the elastic fastener shown in Figure 2 .
  • the cylinder 3 has a body 31 for fixing the cylinder 3 to the front frame 200 and a fitting portion 32 for engaging with the abutting portion 212 of the elastic piece 2. As shown in Figure 5, the body 31 is attached
  • the cylinder 3 may be a cylinder or a multi-faceted cylinder to accommodate the shape of the perforations 101 of the backing plate 100.
  • the elastic piece 2 in this embodiment is an elastic clip connected to the back plate 100, is made of an elastic material, and is integrally formed from the back plate 100 by punching.
  • the specific shape of the back sheet 100 is as shown in Fig. 4A, which shows a liquid crystal module having the elastic fastener shown in Fig. 2.
  • 4B is a schematic view showing the installation of a partially enlarged elastic fastener on the upper and lower sides of the front frame of FIG. 4A. An opening and two symmetrical tongues 21 located inside the opening are punched out in the backing plate 100.
  • the connecting portion 211 of the tongue 21 is connected to the front of the back plate 100 On one side wall of the opening, the other end has a circular arc-shaped abutting portion 212 (formed integrally with the tongue piece 21 by punching).
  • the two abutting portions 212 of the two tongues 21 have circular arc-shaped openings on the opposite sides to cooperate with the cylinder 3 to interfere with and fix the cylinder 3 (described later in detail).
  • the abutting portion 212 is located at a central portion of the opening of the back plate 100 in a suspended manner, and a gap 213 is formed between the abutting portions 212, the size of the gap being smaller than the neck size of the column 3 (described later in detail) So that it can withstand pressure on the neck with a certain pressure.
  • the fitting portion 32 is disposed on a side of the cylinder 3 remote from the front frame 200 to extend between the abutting portions 212 of the elastic piece 2 through the through holes 101 of the back plate 100.
  • the end of the fitting portion 32 remote from the body 31 has a head portion 321 and a neck portion 322 located between the head portion 321 and the body 31 and having a size smaller than the head portion 321.
  • the head 321 is spherical or spherical, which facilitates the passage of the head 321 through the perforations 101 in the backing plate 100 during installation and through the gap between the abutment portions 212.
  • FIG. 3 eight columns 3 are mounted on the front frame 200, three on each of the upper and lower sides, and one on each of the left and right sides.
  • the cylinders 3 are all extended rearward from the frame of the front frame 200 in a manner perpendicular to the front frame panel, i.e., the head 321 of the cylinder 3 is located on the rear side of the front frame 200.
  • the cylinder 3, which is attached to the front frame 200, is pressed into the perforation 101 with its head 321 facing the perforation 101 of the backing plate 100 (a larger head can pass through the perforation). Subsequently, the head 321 extends beyond the perforation 101, and the body 31 mates with the perforation 101. Then, the top of the head 321 touches the tongue 21. Since the size of the head 321 is larger than the gap between the abutting portions 212, the top of the head 321 will open the tongue upward. 21, the abutting portions 212 are lifted up and away from each other, and the gap size becomes large.
  • the tongue piece 21 becomes inclined downward from the abutting portion 212 until the shape of the guiding piece of the connecting portion 21 1 , so that the top of the head portion 321 is guided by the tongue piece 21, even if there is Assembly errors can also be smoothly slipped into the gap, simplifying the installation process.
  • the head 321 protrudes from the enlarged gap so that the neck 322 is located between the gaps 213. Since the neck portion 322 is smaller in size than the head portion 321, and the tongue piece 21 in the shape of the guide piece has a certain downward elastic force, the abutting portion 212 of the tongue piece 21 slides down from the head portion 321 under the action of restoring force.
  • the size of the gap 213 is smaller than the size of the neck 322, so the tongue 21 that is fastened to the neck 322 still has a certain downward elastic force. That is, the tongue piece 21 is pressed against the neck portion 322 with a certain pressure, thereby forming a pre-tightening force between the elastic piece 2 and the cylinder 3, and elastically connecting and fixing the back plate 100 and the front frame 200 together.
  • a liquid crystal module having an elastic fastener is formed. Since it is an elastic connection, the present invention has an advantage of good impact resistance.
  • a resilient, easy-to-access and elastic tensioning mechanism is formed between the elastic piece 2 and the cylinder 3 to reliably connect the front frame 200 and the back plate 100.
  • the head 321 of the cylinder 3 can be separated from the elastic piece 2 by simply opening the elastic piece 2 with a tool.
  • the elastic piece 2 guides and automatically guides the cylinder 3 on the front frame 200 to the desired position of the design, so the invention has simple installation. Reliable advantages.
  • the structure Due to the tensioning action of the shrapnel on the head, the structure can act as a buffer in the direction of the vertical liquid crystal panel. Therefore, the present invention can thin or remove the elasticity of the front frame.
  • the material is used to protect the liquid crystal panel and reduce the thickness of the liquid crystal module.
  • This connection method can be used for various backlight liquid crystal modules.
  • connection manner of the tongue piece 21 and the back plate 100 mentioned in this embodiment is a manner of integrally forming the front frame by pressing, or may be a separately formed tongue by riveting or screwing.
  • the connecting portion 21 1 of the 21 is fixed to the mounting surface of the back plate 100.
  • the body 31 of the aforementioned cylinder 3 is screwed to the front frame 200, it will be understood by those skilled in the art that the cylinder 3 and the front frame 200 may also be connected by riveting or welding.
  • the head portion 321 is spherical or ball-like, but may also be a columnar shape having a circular arc-shaped side surface (the arc-shaped side surface facilitates insertion of the head between the gaps, and also provides sufficient elastic force to abut the abutting portion Together to fix the back panel and front frame) or other shapes.
  • the elastic piece of the present invention may be formed on the back plate in advance or may be pre-formed or connected to the front frame. Accordingly, the column may be pre-locked on the front frame or may be pre-formed or connected to the back plate.
  • FIG. 6 is a perspective view of a three-dimensional embodiment of the elastic fastener
  • FIG. 7 is a cross-sectional view of the elastic fastener of FIG.
  • the elastic fastener 1 of the present invention comprises a symmetrical shaped elastic piece 2 and a cylindrical body 3 having an arc-shaped fitting surface 31.
  • the arcuate mating face 31 of the cylinder 3 may be a spherical portion or may be any arc that facilitates the head 32 of the cylinder 3 passing through the elastic piece 2 and being fixed. In this implementation In the example, only the spherical mating surface will be described as an example.
  • the elastic piece 2 in this embodiment is an elastic structure integrally formed from the back plate 100 by punching.
  • the connecting portion 211 of the tongue piece 21 is connected to one side wall of the aforementioned opening of the backing plate 100, and the other end thereof has a circularly bent abutting portion 212 (formed integrally with the tongue piece 21 by punching).
  • the two abutting portions 212 of the two tongue pieces 21 have a circular arc shape on the opposite side to fit the cylinder 3, and the shape of the bent portion of the abutting portion 212 (hook shape) ) is also adapted to the cylinder 3 to resist and fix the cylinder 3.
  • the abutting portion 212 is located at a central portion of the opening of the back plate 100 in a suspended manner, and a gap 213 is formed between the bent portions of the abutting portion 212, the gap being smaller in size than the neck portion of the cylinder 3, thereby Can withstand pressure on the neck with a certain pressure.
  • the mounting process of the elastic piece 2 and the cylinder 3 of the second embodiment is similar to that of the first embodiment, and therefore the description is omitted.
  • the elastic pieces 2 are all stamped directly on the back plate 100.
  • the shrapnel 2 is a prefabricated separate component. That is, another shrapnel is attached to the front or back panel.
  • the elastic piece 2 is made of a material having elasticity such as metal. It has two symmetrical connecting portions 211A in the same plane, a guiding portion 210 disposed between the connecting portions 211A, and a guiding portion The abutting portion 212A of the 210 is away from the connecting portion 21 1A.
  • the connecting portion 21 1A may be of any shape as long as the elastic piece 2 can be reliably attached to the back plate 100.
  • the manner in which the shrapnel is attached to the backing plate can be various conventional methods such as welding and riveting as described above.
  • the guiding portion 210 smoothly rises from the inner side of the two connecting portions 211A (the side facing the connecting portion) to a height corresponding to the height of the column 3 at a certain inclination to guide the column 3 to The action of the abutting portion 212A.
  • the abutting portion 212A has a circular arc bent, has an arc shape on one side to face the cylindrical body 3, and the shape (hook shape) of the bent portion of the abutting portion 212 is also adapted to the column body 3, To resist and fix the cylinder 3.
  • the abutting portion 212A may be different from the foregoing embodiment except for a rectangular opening located at the top (upper portion) of the guiding portion 210.
  • the length of the rectangular opening is designed according to the required elasticity of the elastic piece 2; the width thereof is taken into consideration for the snapping requirement of the cylinder 3, and is larger than the size of the head 321 of the cylindrical body 3 in the expanded state, so that the head of the cylindrical body 3 is made.
  • the portion 321 can pass, in a normal contracted state, slightly larger or smaller than the minimum size of the neck portion 322 of the cylinder 3, but smaller than the size of the head portion 321 of the cylinder 3.
  • Fig. 9A is a perspective view of a cylinder as a third embodiment
  • Fig. 9B is a schematic view showing a modification of the cylinder as a third embodiment
  • Fig. 9C is a third embodiment
  • the body 31 in FIG. 9A has an external threaded knot at a portion away from the head 321
  • the body 31 of FIG. 9B is internally threaded to connect with the front frame 200; the body 31 of FIG. 9C has a riveted structure or is coated with a threaded surface for anti-loose treatment. Binder.
  • the head 321 of the body 31 first contacts the guiding portion 210. Under the guiding action, the head 321 slides along the guiding portion 210 toward the abutting portion 212A. Since the size of the head 321 is larger than the size of the abutting portion 212A (rectangular opening), the head 321 will project the elastic piece 2 rearward. The elastic piece 2 made of an elastic material is deformed correspondingly, so that the rectangular opening is enlarged. In the case where the size of the head 321 is not greatly different from the size of the abutting portion 212A, the head portion 321 can pass through the enlarged abutting portion 212A (rectangular opening).
  • the abutting portion 212A is restored to its original size, and is slid along the neck portion 322 to the minimum size. Since the size of the abutting portion 212A (rectangular opening) is slightly smaller than the minimum size of the neck portion 322, the abutting portion 212A is fixed at a minimum size of the neck portion 322 with a certain pre-tightening force.
  • the elastic card fastener provided by the present invention has the advantages of reliable connection, easy assembly, and good impact resistance.
  • the liquid crystal module using the elastic card firmware can significantly save the use of the buffer material, so the thickness of the module can be significantly reduced, and the technical trend of the development of the liquid crystal television to the light and thin direction is met.

Description

一种弹性卡固件及液晶模组
技术领域
本发明涉及一种弹性卡固件以及具有该弹性卡固件的液晶模 组， 属于平板显示技术领域。 背景技术
液晶模组 （LCD Module ) 是液晶屏 （面板） 与背光灯组件的组合 体。 在液晶电视的生产过程中， 液晶屏与背光灯组件被组装在一起， 形成为一个整体。 但在工作的时候， 它们是相互独立的（即电路不相 关）。
图 1为一款典型的液晶模组的结构分解示意图。该液晶模组主要 包括以下的组成部分： 背板 10、 反射片 20、 背光灯管 30、 光学膜片 40、 面板 （panel ) 50、 前框 60。 在液晶模组组装时， 该背板 10、 反 射片 20、 背光灯管 30、 光学膜片 40、 面板 50、 前框 60被依序叠合 在一起， 组装成一个整体的液晶模组。 在背板 10和前框 60之间， 既 需要保留一定的间距以设置前述反射片 20、 背光灯管 30等， 也需要 有可靠的连接和固定， 以保证模组的各个部分的定位和抗冲击能力。
目前， 已有的液晶模组的前框与背板的连接方式包括以下两 种。
第一种是卡扣连接方式。 由于金属卡扣之间的配合间隙极 小， 因此安装的时候必须格外小心。 另一方面， 由于卡扣不具有 预紧作用， 因此为了减少冲击对 LCD面板的不良影响， 在前框处 一般会被粘贴上比较厚的缓冲材料， 并且在周边会预留较大间隙 以消除卡扣的制造误差的影响。 因此， 此种卡扣连接方式不但安 装过程耗时， 而且抗冲击和震动的能力差。 由于多了一些缓冲材 料的厚度， 因此液晶模组的厚度也会增加。
第二种是螺丝连接方式。 由于采用螺丝连接方式时， 由于螺 丝的数目较多， 加之螺丝旋转固定过程需要一定的时间， 因此此 种方式的连接过程较为耗时。 另一方面， 由于螺丝连接属于刚性 连接方式， 对 LCD面板的缓冲性能差。 因此， 为了消除螺丝拧紧 时的局部变形过大对 LCD面板的不良影响， 需要在前框处粘贴比 较厚的缓冲材料， 这样显著增加了整个液晶模组的厚度。
综上所述， 已有的液晶模组连接方式存在安装工序复杂、 耐 冲击性能差、 液晶模组厚度较大的缺点。 故有必要提供一种采用新 型连接方式的液晶模组， 以解决现有技术所存在的问题。 发明内容
本发明的主要目的在于提供一种用于连接液晶模组前框和背板 的弹性卡固件。
本发明的另一目的在于提供一种具有该弹性卡固件的液晶模 组。
为实现上述的发明目的， 本发明揭示一种弹性卡固件， 具有弹 片和柱体， 其中所述弹片具有用于固定弹片的连接部和用于与所述 柱体配合的抵止部， 所述柱体具有用于固定所述柱体的本体和用于与 所述抵止部卡固的配合部， 所述配合部的一端具有头部和颈部， 其中 所述颈部位于所述头部与所述本体之间，所述颈部的最小尺寸小于所 述头部的尺寸， 所述抵止部在固定时抵触在所述颈部的外侧。
在本发明的一实施例中，所述弹片的所述抵止部是两个相对设置 的圆弧形状开口， 或者是一矩形开口， 或者是在相向的一侧具有与柱 体配合的圆弧形状的两个折弯， 所述折弯之间形成所述间隙。
在本发明的一实施例中， 所述弹片是两片相对设置的舌片。 在本发明的一实施例中， 所述弹片还具有导引部， 导引部从所述 连接部倾斜地延伸到所述抵止部。
再者，本发明提供一种具有上述弹性卡固件的液晶模组 由背板、 面板以及前框依序安装， 其特征在于所述液晶模组还包括：
多个所述弹性卡固件， 设置在所述背板与所述前框之间， 以连 接所述背板和所述前框。
所述柱体是铆接、 螺丝螺紋连接或是焊接在所述背板或前框上。 所述弹片是直接在背板或前框上冲压形成， 或所述弹片是在背 板或前框上增加的一个独立部件。
与现有技术相比较， 本发明所提供的弹性卡固件采用弹性连接方 式， 使得连接可靠， 装配简易， 抗冲击性良好。 采用本弹性卡固件的 液晶模组， 能够显著节省缓冲材料的使用， 因此模组的厚度可以明显 减少， 符合液晶电视向轻薄化方向发展的技术趋势。 附图说明
图 1为一款典型的液晶模组的结构分解示意图；
图 2为本发明第一实施例的弹性卡固件的剖面示意图； 图 3为具有图 2所示的弹性卡固件的前框的立体图；
图 4A为具有图 2所示的弹性卡固件的液晶模组的示意图； 图 4B为图 4A中的前框上下侧的局部放大的弹性卡固件安装示 意图；
图 5为图 4A中的前框左右侧的局部放大的弹性卡固件安装示意 图；
图 6为本发明第二实施例的弹性卡固件的立体安装示意图； 图 7为图 6的弹性卡固件的剖面示意图；
图 8为本发明第三实施例的弹片的立体示意图；
图 9A为本发明第三实施例的柱体的立体示意图；
图 9B为本发明第三实施例的柱体的变形例示意图；
图 9C为本发明第三实施例的柱体的另一变形例示意图。 具体实施方式
为让本发明上述目的、 特征及优点更明显易懂， 下文特举本发明 较佳实施例， 并配合附图， 作详细说明如下。 再者， 本发明所提到的 方向用语， 例如 "上"、 "下"、 "前"、 "后"、 "左"、 "右" 、 "内"、 "外" 、 "侧面"等， 仅是参考附加图式的方向。 因此， 使 用的方向用语是用以说明及理解本发明， 而非用以限制本发明。 另 外， 本发明仅使用液晶模组为例进行说明。
以下将配合附图更进一步说明各实施例。
(第一实施例）
图 2为作为本发明第一实施例的弹性卡固件的剖面示意图， 本发明中的弹性卡固件 1包括由两舌片对称设置而形成的弹片 2和 具有弧形配合面 31的柱体 3。 柱体 3的弧形配合面 31可以是球状 的一部分， 也可以是便于柱体 3的头部 32穿过弹片 2的任意弧形 这由实际使用情况决定。 在本实施例中， 仅以球状配合面为例进 行说明。
图 3为具有图 2所示的弹性卡固件的前框 200的立体图。 柱 体 3具有用于将柱体 3固定在前框 200上的本体 31和用于与弹片 2 的抵止部 212卡固的配合部 32。 如图 5所示， 本体 31锁附
(attachment )在前框 200上， 并且垂直于前框 200的安装面（即， 背板 200与前框 100相配合的表面） 向上延伸到背板 100的穿孔 101 内。 柱体 3可以是圆柱体也可以是多面柱体， 从而与背板 100的穿孔 101形状相适应。
本实施例中的弹片 2是与背板 100连接的弹性夹子， 由弹性 材料构成并且是用冲压的方式从背板 100上一体形成。 背板 100 的具体形状如图 4A所示， 该图显示了具有图 2所示的弹性卡固件 的液晶模组。 图 4B为图 4A中的前框上下侧的局部放大的弹性卡 固件安装示意图。 在背板 100上冲压出开口和位于开口内部的两 个对称的舌片 21。舌片 21—端的连接部 211连接在背板 100的前 述开口的一侧壁上， 其另一端具有圆弧开口的抵止部 212 (与舌片 21通过冲压一体形成）。 在本实施例中， 两个舌片 21的两个抵止 部 212， 在相向的一侧具有圆弧形状开口以与柱体 3配合， 以抵触 和固定柱体 3 (后文详述）。 换言之， 抵止部 212以悬空的方式位 于背板 100的开口的中央部位， 并且在抵止部 212之间形成间隙 213， 该间隙的尺寸小于柱体 3的颈部尺寸 （后文详述）， 从而能 够以一定压力抵触在颈部上。
配合部 32设置在柱体 3的远离前框 200的一侧，以穿过背板 100 的穿孔 101而伸入到弹片 2的抵止部 212之间。 配合部 32的远离本 体 31的一端具有头部 321以及位于头部 321与本体 31之间且尺寸小 于头部 321的颈部 322。 头部 321是球状或类似于球状， 这样可以方 便头部 321在安装过程中穿过背板 100上的穿孔 101， 并且穿过抵止 部 212之间的间隙。
下面过对弹片 2与柱体 3的安装过程进行说明。
如图 3所示， 在前框 200上安装有 8个柱体 3， 其中上下侧各三 个， 左右侧各一个。 柱体 3均是从前框 200的边框以垂直于前框面板 的方式向后延伸， 即柱体 3的头部 321位于前框 200的后侧。
由前述， 锁附在前框 200上的柱体 3， 以其头部 321朝向背板 100的穿孔 101的方式， 被压入到穿孔 101内 （尺寸较大的头部可 以穿过穿孔）。 随后， 头部 321伸出穿孔 101， 本体 31与穿孔 101 匹配。 接着， 头部 321的顶部触碰到舌片 21。 由于头部 321的尺 寸大于抵止部 212之间的间隙， 头部 321的顶部会向上顶开舌片 21， 使抵止部 212向上抬起并且相互远离， 间隙尺寸变大。 由于 抵止部 212抬起， 舌片 21变为从抵止部 212向下倾斜， 直到连接 部 21 1的导引片形状， 所以头部 321的顶部在舌片 21的导引下， 即使有装配误差也可以顺利地滑入到间隙之间， 简化安装工艺。 参考图 5所示的弹性卡固件安装示意图， 头部 321从扩大的间隙 伸出， 使颈部 322位于间隙 213之间。 因为颈部 322的尺寸小于 头部 321， 而且处于导引片形状的舌片 21具有一定向下的弹力， 所以舌片 21的抵止部 212会在恢复力的作用下从头部 321下滑到 颈部 322， 并且开口就卡固在颈部 322两侧。 如前述， 间隙 213的 尺寸小于颈部 322的尺寸， 所以卡固在颈部 322的舌片 21仍然具 有一定的向下的弹力。 也就是说， 舌片 21以一定压力抵触在颈部 322， 从而在弹片 2与柱体 3之间形成预紧力， 将背板 100和前框 200弹性地连接和固定在一起。 这样， 就形成了具有弹性卡固件的 液晶模组。 因为是弹性连接， 所以本发明具有抗冲击性好的优点。
这样， 弹片 2和柱体 3之间形成一个弹性的易进难出而且带有弹 性拉紧力的机构， 可靠连接前框 200和背板 100。 在拆卸时， 只需用 工具对弹片 2稍微撬开即可使柱体 3的头部 321脱离弹片 2。
在安装时只需把前框 200往背板 100靠进即可， 到达一定距离 时， 弹片 2会导向和自动引导前框 200上的柱体 3到设计所需位置， 因此本发明具有安装简单可靠的优点。
由于弹片对头部的拉紧作用， 在垂直液晶面板的方向上， 该结构 可起到缓冲的效果。 因此， 本发明可以减薄或者去除前框中的弹性缓 冲材料， 起到保护液晶面板和减薄液晶模组厚度的效果。
此种连接方式可用于各种背光源液晶模组。
可以理解， 本实施例中提到的舌片 21与背板 100的连接方式 是通过冲压而一体形成于前框的方式， 也可以是通过铆接或螺丝 螺紋连接等方式， 将单独形成的舌片 21的连接部 21 1固定到背板 100的安装面上。 类似的， 虽然前述柱体 3的本体 31是通过螺丝 螺紋连接到前框 200上， 但是本领域一般技术人员可以理解， 柱 体 3与前框 200之间也可以是铆接或焊接等连接方式。 此外， 头 部 321是球状或类似球状， 但是也可以是具有圆弧形状侧面的柱 状 （该圆弧形状侧面， 既方便头部插入到间隙之间， 也能提供足 够的弹力以与抵止部一起来固定背板和前框） 或其他形状。
当然， 本发明的弹片既可以预先形成在背板上也可以预先形 成或连接在前框上， 相应的， 柱体既可以预先锁附在前框上也可 以预先形成或连接在背板上。
(第二实施例）
为方便描述， 与第一实施例中相同的部件， 在第二实施例中 也使用相同的标记和名称， 并且省略详细说明。
参考图 6和图 7， 其中图 6为作为第二实施例的弹性卡固件的 立体安装示意图； 图 7为图 6的弹性卡固件的剖面示意图。 本发 明中的弹性卡固件 1包括对称形状的弹片 2和具有弧形配合面 31 的柱体 3。 柱体 3的弧形配合面 31可以是球状的一部分， 也可以 是方便柱体 3的头部 32穿过弹片 2并固定的任意弧形。 在本实施 例中， 仅以球状配合面为例进行说明。
本实施例中的弹片 2是用冲压的方式从背板 100上一体形成 的弹性结构。 舌片 21—端的连接部 211连接在背板 100的前述开 口的一侧壁上， 其另一端具有圆弧折弯的抵止部 212 (与舌片 21 通过冲压一体形成）。 在本实施例中， 两个舌片 21的两个抵止部 212 , 在相向的一侧具有圆弧形状以与柱体 3配合， 并且， 抵止部 212的折弯部分的形状（钩形） 也与柱体 3相适应， 以抵触和固定 柱体 3。 换言之， 抵止部 212以悬空的方式位于背板 100的开口的 中央部位， 并且在抵止部 212的折弯部分之间形成间隙 213， 该间 隙的尺寸小于柱体 3的颈部尺寸， 从而能够以一定压力抵触在颈 部上。
第二实施例的弹片 2与柱体 3的安装过程与第一实施例的类 似， 所以省略说明。
(第三实施例）
为方便描述， 与第一实施例中相同的部件， 在第二实施例中 也使用相同的标记和名称， 并且省略详细说明。
前述两个实施例中， 弹片 2都是直接在背板 100上冲压而成。 但 是， 弹片 2是预制的独立部件。 也就是， 在前框或者背板上另外安装 一个弹片。
如图 8所示的第三实施例的弹片的立体示意图， 弹片 2是由具有 弹性的材料， 例如金属构成。 其具有处于相同平面的两个对称的连接 部 211A, 设置在连接部 211A之间的导引部 210， 以及位于导引部 210的远离连接部 21 1A—侧的抵止部 212A。
连接部 21 1A可以是任意形状， 只要能够将弹片 2可靠地安装到 背板 100上。 弹片连接到背板的方式， 如前述可以是焊接、 铆接等各 种常规方式。
导引部 210平滑地从两个连接部 211A的内侧 （连接部相向的一 侧）， 以一定倾斜度上升到与柱体 3的高度相适应的高度， 以起到将 柱体 3导引到抵止部 212A的作用。
抵止部 212A具有圆弧折弯， 在相向的一侧具有圆弧形状以与 柱体 3配合， 并且， 抵止部 212的折弯部分的形状 （钩形） 也与 柱体 3相适应， 以抵触和固定柱体 3。
本领域的技术人员可以理解，抵止部 212A可以不同于前述实施 例， 只是一个位于导引部 210的顶部（上部） 的矩形开口。 该矩形开 口的长度， 根据弹片 2所需弹性来设计； 其宽度要考虑到柱体 3的卡 扣需要， 在扩张状态下大于柱体 3的头部 321的尺寸， 以便使柱体 3 的头部 321能够通过， 在平时的收缩状态下可以略大与或小于柱体 3 的颈部 322的最小尺寸， 但小于柱体 3的头部 321的尺寸。
如图 9A、 9B和 9C所示， 其中图 9A为作为第三实施例的柱体的 立体示意图； 图 9B为作为第三实施例的柱体的变形例示意图； 图 9C 为作为第三实施例的柱体的另一变形例示意图柱体 3的头部 321是球 状， 颈部 322则包括从头部 321逐渐缩小至最小尺寸， 再逐渐扩大到 能够与本体 31平滑连接的形状， 即两个对置圆台的形状。
此外， 图 9A中的本体 31在远离头部 321的部位具有外螺紋结 构， 以与前框 200连接； 图 9B中的本体 31在内部具有内螺紋结构， 以与前框 200连接； 图 9C中的本体 31具有铆接结构或在螺紋旋合表 面涂有用于防松处理的粘结剂。
在安装过程中，将前框 200靠近背板 100时， 本体 31的头部 321 首先接触到导引部 210。 在导引作用下， 头部 321顺着导引部 210滑 向抵止部 212A。 由于头部 321的尺寸大于抵止部 212A (矩形开口） 的尺寸， 所以头部 321会将弹片 2向后顶。 弹性材料制成的弹片 2会 相应发生变形， 使得矩形开口扩大。在头部 321的尺寸与抵止部 212A 的尺寸相差不是很大的情况下， 头部 321就可以穿过扩大的抵止部 212A (矩形开口）。 然后， 抵止部 212A恢复原尺寸， 顺着颈部 322滑 至最小尺寸处。 因为抵止部 212A (矩形开口） 的尺寸略小于颈部 322 的最小尺寸， 所以抵止部 212A以一定预紧力卡固在颈部 322的最小 尺寸处。
如上所述， 本发明所提供的弹性卡固件具有连接可靠、 装配简 易、 抗冲击性良好等优点。 采用本弹性卡固件的液晶模组， 能够显 著节省缓冲材料的使用， 因此模组的厚度可以明显减少， 符合液晶电 视向轻薄化方向发展的技术趋势。
本发明已由上述相关实施例加以描述， 然而上述实施例仅为实 施本发明的范例。 必需指出的是， 已公开的实施例并未限制本发明的 范围。 相反地， 包含于权利要求书的精神及范围的修改及均等设置均 包括于本发明的范围内。

Claims

权 利 要 求
1. 一种液晶模组， 由背板、 面板以及前框依序安装， 其特征在于： 所述液晶模组包括：
多个弹性卡固件， 设置在所述背板与所述前框之间， 以连接所述 背板和所述前框， 所述弹性卡固件具有弹片和柱体， 所述弹片 具有用于固定弹片的连接部和用于与所述柱体配合的抵止部； 及 所述柱体具有用于固定所述柱体的本体和用于与所述抵止部卡 固的配合部， 所述配合部的一端具有头部和颈部， 其中所述颈部 位于所述头部与所述本体之间， 所述颈部的最小尺寸小于所述头 部的尺寸； 所述弹片的抵止部在固定时抵触在所述颈部的外侧； 其中所述弹片的所述抵止部是在相向的一侧具有与柱体配合的 圆弧形状的两个折弯， 所述折弯之间形成所述间隙； 及所述弹 片还具有导引部， 所述导弓 I部从所述连接部倾斜地延伸到所述抵 止部。
2. 一种弹性卡固件， 具有弹片和柱体， 其特征在于：
所述弹片具有用于固定弹片的连接部和用于与所述柱体配合的 抵止部； 及
所述柱体具有用于固定所述柱体的本体和用于与所述抵止部卡 固的配合部， 所述配合部的一端具有头部和颈部， 其中所述颈部 位于所述头部与所述本体之间， 所述颈部的最小尺寸小于所述头 部的尺寸； 所述弹片的抵止部在固定时抵触在所述颈部的外侧。
3. 如权利要求 2所述的弹性卡固件， 其特征在于： 所述配合部的头部是球状或类球状物体。
4. 如权利要求 2所述的弹性卡固件， 其特征在于：
所述弹片的所述抵止部是两个相对设置的圆弧形状开口。
5. 如权利要求 2所述的弹性卡固件， 其特征在于：
所述弹片的所述抵止部是一矩形开口。
6. 如权利要求 2所述的弹性卡固件， 其特征在于：
所述弹片的所述抵止部是在相向的一侧具有与柱体配合的圆弧 形状的两个折弯， 所述折弯之间形成所述间隙。
7. 如权利要求 2所述的弹性卡固件， 其特征在于：
所述弹片是两片相对设置的舌片。
8. 如权利要求 2所述的弹性卡固件， 其特征在于：
所述弹片还具有导引部， 所述导引部从所述连接部倾斜地延伸到 所述抵止部。
9. 一种液晶模组， 由背板、 面板以及前框依序安装， 其特征在于： 所述液晶模组还包括多个弹性卡固件，设置在所述背板与所述前 框之间， 以连接所述背板和所述前框， 所述弹性卡固件具有弹 片和柱体，所述弹片具有用于固定弹片的连接部和用于与所述柱 体配合的抵止部； 及所述柱体具有用于固定所述柱体的本体和用 于与所述抵止部卡固的配合部， 所述配合部的一端具有头部和颈 部， 其中所述颈部位于所述头部与所述本体之间， 所述颈部的最 小尺寸小于所述头部的尺寸； 所述弹片的抵止部在固定时抵触在
10. 如权利要求 9所述的液晶模组， 其特征在于：
所述配合部的头部是球状或类球状物体。
11. 如权利要求 9所述的液晶模组， 其特征在于：
所述弹片的所述抵止部是两个相对设置的圆弧形状开口。
12. 如权利要求 9所述的液晶模组， 其特征在于：
所述弹片的所述抵止部是一矩形开口。
13. 如权利要求 9所述的液晶模组， 其特征在于：
所述弹片的所述抵止部是在相向的一侧具有与柱体配合的圆 弧形状的两个折弯， 所述折弯之间形成所述间隙。
14. 如权利要求 9所述的液晶模组， 其特征在于：
所述弹片是两片相对设置的舌片。
15. 如权利要求 9所述的液晶模组， 其特征在于：
所述弹片还具有导引部， 所述导引部从所述连接部倾斜地延伸到 所述抵止部。
16. 如权利要求 9所述的液晶模组， 其特征在于：
所述柱体是铆接、 螺丝螺紋连接或是焊接在所述背板或前框上。
17. 如权利要求 9所述的液晶模组， 其特征在于：
所述弹片是直接在背板或前框上冲压形成， 或所述弹片是在背板 或前框上增加的一个独立部件。
PCT/CN2010/079028 2010-07-30 2010-11-23 一种弹性卡固件及液晶模组 WO2012012991A1 (zh)

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