WO2018107420A1 - 屏蔽罩 - Google Patents

屏蔽罩 Download PDF

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Publication number
WO2018107420A1
WO2018107420A1 PCT/CN2016/110065 CN2016110065W WO2018107420A1 WO 2018107420 A1 WO2018107420 A1 WO 2018107420A1 CN 2016110065 W CN2016110065 W CN 2016110065W WO 2018107420 A1 WO2018107420 A1 WO 2018107420A1
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WO
WIPO (PCT)
Prior art keywords
clamping
shield
section
bracket
side wall
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/CN2016/110065
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English (en)
French (fr)
Inventor
郭继龙
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.)
Shenzhen Royole Technologies Co Ltd
Original Assignee
Shenzhen Royole Technologies Co Ltd
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.)
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Publication date
Application filed by Shenzhen Royole Technologies Co Ltd filed Critical Shenzhen Royole Technologies Co Ltd
Priority to CN201680042778.6A priority Critical patent/CN108064469B/zh
Priority to PCT/CN2016/110065 priority patent/WO2018107420A1/zh
Publication of WO2018107420A1 publication Critical patent/WO2018107420A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/002—Casings with localised screening
    • H05K9/0022—Casings with localised screening of components mounted on printed circuit boards [PCB]
    • H05K9/0024—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields
    • H05K9/0032—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields having multiple parts, e.g. frames mating with lids
    • H05K9/0035—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields having multiple parts, e.g. frames mating with lids with retainers mounted beforehand on the PCB, e.g. clips
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/02—Arrangements of circuit components or wiring on supporting structure
    • H05K7/12—Resilient or clamping means for holding component to structure
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields

Definitions

  • the present invention relates to the field of electromagnetic shielding technology, and in particular, to a shielding cover.
  • the shield is used as the basic device of EMC (Electromagnetic Compatibility, which means that the electromagnetic energy generated by the equipment does not interfere with other equipment and is not interfered by the electromagnetic energy of other equipment), in military, medical, industrial control, It is widely used in fields such as electronics. In consumer electronics, as circuit design work becomes more frequent, the design of shields becomes more important. How to improve the shielding effect of the shield by the structural design of the shield is the direction of research in the industry.
  • EMC Electromagnetic Compatibility
  • the technical problem to be solved by the embodiments of the present invention is to provide a shielding cover with good shielding effect.
  • Embodiments of the present invention provide a shield cover including a cover body and a clamp bracket, the cover body including a top wall and a closed side wall surrounding the periphery of the top wall, the clamp bracket is closedly fixed to a circuit board, the clamping bracket receiving and clamping an insertion end of the side wall away from the top wall.
  • the present invention has the following beneficial effects:
  • the clamping bracket can receive and clamp the insertion end of the side wall and is closedly fixed to the circuit board, the clamping bracket is closed and continuously connected to the cover body and the Between the boards, there is no gap between the cover and the circuit board, and the shield can completely cover the components to be shielded on the circuit board, and electromagnetic waves of the components are completely shielded.
  • the shielding effect of the shield is good.
  • FIG. 1 is a top plan view of a shield cover according to an embodiment of the present invention in use.
  • Figure 2 is a cross-sectional view taken along line II-II of Figure 1.
  • Fig. 3 is an enlarged schematic view showing the structure of Fig. 2;
  • FIG. 4 is a schematic structural view of a clamping bracket provided by an embodiment of the present invention.
  • Figure 5 is an enlarged schematic view showing another structure of III in Figure 2.
  • Figure 6 is an enlarged schematic view showing still another structure at III in Figure 2.
  • an embodiment of the present invention provides a shield cover 100 for electromagnetic shielding of components 300 on the circuit board 200 .
  • the shield 100 includes a cover 1 and a clamping bracket 2 that is fixedly secured to the circuit board 200.
  • the cover 1 includes a top wall 11 and a side wall 12 that is closedly connected to the periphery of the top wall 11.
  • the clamping bracket 2 receives and clamps the insertion end 124 of the side wall 12 away from the top wall 11.
  • the closed fixing of the clamping bracket 2 to the circuit board 200 means that the clamping bracket 2 and the circuit board 200 are seamlessly connected, and the clamping bracket 2 is on the circuit board.
  • the projection on 200 is closed and continuous.
  • the closed connection of the side wall 12 to the periphery of the top wall 11 means that the side wall 12 and the top wall 11 are seamlessly connected, and the side wall 12 is on the top wall 11
  • the projection is closed and continuous.
  • the extended shape of the clamping bracket 2 is matched with the extended shape of the insertion end 124 of the side wall 12, so that the clamping The bracket 2 is capable of receiving and clamping the insertion end 124, and the insertion end 124 is continuously and seamlessly connected to the clamping bracket 2.
  • the side walls 12 are closed to form a square shape, and correspondingly, the clamping bracket 2 is also square.
  • the side walls 12 are closed to form a circle, and the clamping bracket 2 is also circular.
  • the clamping bracket 2 can have a free end 201 and a fixed end 202 disposed opposite to each other, and a receiving cavity 20 formed between the free end 201 and the fixed end 202.
  • the insertion end 124 of the side wall is received in the receiving cavity 20, the free end 201 clamps the side wall, and the fixed end 202 is closedly fixed to the circuit board 200. Since the clamping bracket 2 receives and clamps the insertion end 124 of the side wall 12 and is closedly fixed to the circuit board 200, the clamping bracket 2 is closed and continuously connected Connected between the cover 1 and the circuit board 200, there is no gap between the cover 1 and the circuit board 200, and the shield 100 can completely cover the circuit board 200 to be shielded. In the component 300, the electromagnetic wave of the component 300 is completely shielded, and the shielding effect of the shield 100 is good.
  • the clamping bracket 2 includes two clamping arms 21 arranged symmetrically.
  • Each of the clamping arms 21 includes a clamping section 211 and a connecting section 212 extending from the clamping section 211.
  • Two of the clamping segments 211 are located at the free end 201 of the clamping bracket 2.
  • Two of the connecting sections 212 are located at the fixed end 202 of the clamping bracket 2.
  • the two clamping segments 211 merge to form a clamping structure 210, and the two connecting segments 212 are connected to each other away from the end of the clamping segment 211, and the insertion end 124 passes through the clamping structure 210 and
  • the connecting segments 212 abut.
  • the side wall 12 (shown in bold in FIG. 3) has a seamless connection between the clamping section 211 and the side wall 12.
  • the side wall 12 includes an opposite inner surface 121 and an outer surface 122.
  • the inner surface 121 abuts the clamping section 211 to form a first resealing, the inner surface 121 abuts the connecting section 212 to form a second resealing, the outer surface 122 and the clip
  • the holding section 211 abuts to form a third resealing, and the outer surface 122 abuts the connecting section 212 to form a fourth resealing.
  • the side wall 12 and the clamping bracket 2 have four contact positions (as shown in the thickened portion of FIG. 3), and the shielding cover 100 realizes a four-fold sealing, which further enhances the shielding effect.
  • the side wall 12 divides the internal space of the clamping bracket 2 into two sealed spaces independent of each other, the shielding Electromagnetic waves inside and outside the cover 100 are difficult to pass through.
  • each of the clamping segments 211 includes A plurality of sub-clamping segments are disposed at intervals, and the adjacent sub-clamping segments are hollowed out. All of the sub-clamping segments abut the side wall 12 such that the two clamping segments 211 intermittently abut the side wall 12.
  • the plurality of sub-clamping segments of the two clamping segments 211 are disposed opposite one another or offset from one another.
  • the clamping bracket 2 is made of a metal material.
  • the clamping bracket 2 utilizes the toughness of the metal material to achieve a slight deformation and has a repulsive force in the deformed state, so that the side wall 12 can pass through the clamping structure 210 and be clamped by the clamping structure 210 tight.
  • a gap is formed between the two clamping segments 211 , and the width of the gap is smaller than the thickness of the sidewall 12 .
  • the width of the gap may be less than half the thickness of the side wall 12 to increase the clamping force of the clamping structure 210.
  • the two clamping segments 211 are in conflict with each other, so that the clamping structure 210 has a strong clamping force and is difficult to process.
  • the two clamping arms 21 are integrally formed, thereby simplifying the processing process of the clamping bracket 2, reducing the processing difficulty, and also making the connection relationship between the two clamping arms 21 more reliable.
  • the two clamping arms 21 are integrally formed by the same metal plate, and the deformation state or the repulsive force can be prevented from being different due to different material properties, and the processing yield of the clamping bracket 2 is ensured.
  • an angle is formed between the two connecting segments 212.
  • the two connecting segments 212 form a V-like structure, and the insertion end 124 of the sidewall 12 can easily contact the two connecting segments 212 after passing through the clamping structure 210.
  • the inner surface 121 and the edge of the outer surface 122 away from the top wall 11 respectively abut against the two connecting segments 212.
  • the connecting section 212 can be a straight line segment or a curved segment. When the connecting section 212 is a curved section, an angle is formed between the connecting lines of the two connecting sections 212. The included angle may be less than or equal to 150°.
  • the two connecting segments 212 together form a U-shaped slot
  • the sidewall 12 is inserted into the U-shaped slot
  • the insertion end 124 is at least partially received in the Inside the U-shaped groove.
  • the inner surface 121 and the outer surface 122 of the side wall 12 are respectively connected to the two inner groove walls of the U-shaped groove (as shown in the thickened portion of FIG. 5), thereby increasing the connection area, thereby The sealing performance of the shield case 100 is further improved.
  • the outer end surface 123 of the insertion end 124 away from the bottom of the top wall 11 is a curved surface, so that the side wall 12 is more easily realized and two The connection of the connecting segments 212, that is, the contact area between the bottom of the insertion end 124 and the side wall 12 is larger (as shown in bold in Fig. 6).
  • the shape of the outer end surface 123 can match the shape of the surfaces of the two connecting segments 212 facing each other, such that the contact area of the outer end surface 123 and the two connecting segments 212 is larger.
  • the sealing effect of the sealing cover 100 is better.
  • FIG. 2 FIG. 3, FIG. 5 and FIG. 6, as an alternative embodiment, two ends of the connecting section 212 away from the clamping section 211 are soldered to the circuit board 200.
  • the connecting portion 212 is partially soldered to the circuit board 200, rather than being soldered to the circuit board 200, which can save space of the circuit board 200 required for the connecting portion 212, so that the circuit board 200 There is more space for arranging other components or lines to facilitate miniaturization of the circuit board 200.
  • the connecting section 212 can be soldered to the inner layer of the circuit board 200.
  • each of the clamping arms 21 includes an intermediate section 213 that is smoothly connected between the clamping section 211 and the connecting section 212.
  • Both of the intermediate sections 213 are convex toward the direction away from each other, so that the length of the clamping arm 21 is long, the deformation range is large, and the elastic recovery performance is better.
  • the receiving cavity 20 is formed in the clamping bracket 2 .
  • an end of the clamping section 211 away from the intermediate section 213 extends toward the inside of the clamping bracket 2, which can reduce the height of the clamping bracket 2, so that the shielding cover 100 is small in size.
  • the holding bracket 2 has a heart shape.
  • an end of the clamping section 211 away from the intermediate section 213 may also extend toward the outside of the clamping bracket 2 .

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

一种屏蔽罩（100），包括罩体（1）和夹持支架（2），罩体（1）包括顶壁（11）和封闭式围设于顶壁（11）周边的侧壁（12），夹持支架（2）封闭式固定至电路板（200），夹持支架（2）收容且夹持侧壁（12）的远离顶壁（11）的插入端（124）。

Description

屏蔽罩 技术领域
本发明涉及电磁屏蔽技术领域，尤其涉及一种屏蔽罩。
背景技术
屏蔽罩作为EMC(Electromagnetic Compatibility，电磁兼容性，意指设备所产生的电磁能量既不对其它设备产生干扰，也不受其它设备的电磁能量干扰的能力)的基本器件，在军工、医疗、工控、电子等领域应用广泛。在消费类的电子产品中，随着电路设计的工作频率越来越高，屏蔽罩的设计也愈发重要。如何通过屏蔽罩的结构设计，提升屏蔽罩的屏蔽效果，为业界研究的方向。
发明内容
本发明实施例所要解决的技术问题在于提供一种屏蔽效果好的屏蔽罩。
为了实现上述目的，本发明实施例采用如下技术方案：
本发明实施例提供了一种屏蔽罩，包括罩体和夹持支架，所述罩体包括顶壁和封闭式围设于所述顶壁周边的侧壁，所述夹持支架封闭式固定至电路板，所述夹持支架收容且夹持所述侧壁的远离所述顶壁的插入端。
相较于现有技术，本发明具有以下有益效果：
由于所述夹持支架能收容且夹持所述侧壁的所述插入端、并封闭式固定至所述电路板，因此所述夹持支架封闭且连续地连接在所述罩体与所述电路板之间，所述罩体与所述电路板之间没有缝隙，所述屏蔽罩能够完整地覆盖所述电路板上待屏蔽的元器件，所述元器件的电磁波被完全屏蔽，所述屏蔽罩的屏蔽效果好。
附图说明
为了更清楚地说明本发明的技术方案，下面将对实施方式中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以如这些附图获得其它的附图。
图1是本发明实施例提供的屏蔽罩在使用状态的俯视图。
图2是图1中沿Ⅱ-Ⅱ线的剖视图。
图3是图2中Ⅲ处结构的放大示意图。
图4是本发明实施例提供的一种夹持支架的结构示意图。
图5是图2中Ⅲ处的另一种结构的放大示意图。
图6是图2中Ⅲ处的再一种结构的放大示意图。
具体实施方式
下面结合附图，对本发明的实施例进行描述。
请一并参阅图1、图2以及图4，本发明实施例提供一种屏蔽罩100，所述屏蔽罩100用于对电路板200上的元器件300起到电磁屏蔽作用。
所述屏蔽罩100包括罩体1和封闭式固定至电路板200的夹持支架2。所述罩体1包括顶壁11和封闭式连接于所述顶壁11周边的侧壁12。所述夹持支架2收容且夹持所述侧壁12的远离所述顶壁11的插入端124。
所述夹持支架2封闭式固定至所述电路板200是指，所述夹持支架2与所述电路板200之间是无缝连接的，并且所述夹持支架2在所述电路板200上的投影是封闭的、连续的。所述侧壁12封闭式连接于所述顶壁11周边是指，所述侧壁12与所述顶壁11之间是无缝连接的，并且所述侧壁12在所述顶壁11上的投影是封闭的、连续的。
可以理解的，在所述顶壁11的平行平面上，所述夹持支架2的延伸形状与所述侧壁12的所述插入端124的延伸形状是相匹配的，从而使所述夹持支架2能够收容且夹持所述插入端124，此时所述插入端124与所述夹持支架2实现连续地、无缝地连接。具体而言，所述侧壁12封闭连接形成一方形，相应地，所述夹持支架2也呈方形。在另一实施方式中，所述侧壁12封闭连接形成一圆形，所述夹持支架2也呈圆形。
在本实施例中，所述夹持支架2可具有正对设置的自由端201与固定端202、及形成在所述自由端201与所述固定端202之间的收容腔20。所述侧壁的插入端124收容于所述收容腔20，所述自由端201夹持所述侧壁，所述固定端202封闭式地固定至所述电路板200。由于所述夹持支架2收容且夹持所述侧壁12的插入端124、并封闭式固定至所述电路板200，因此所述夹持支架2封闭且连续地连 接在所述罩体1与所述电路板200之间，所述罩体1与所述电路板200之间没有缝隙，所述屏蔽罩100能够完整地覆盖所述电路板200上待屏蔽的元器件300，所述元器件300的电磁波被完全屏蔽，所述屏蔽罩100的屏蔽效果好。
请一并参阅图1至图4，作为一种可选实施例，所述夹持支架2包括对称设置的两个夹持臂21。每个夹持臂21均包括夹持段211和自所述夹持段211延伸而出的连接段212。两个所述夹持段211位于所述夹持支架2的自由端201。两个所述连接段212位于所述夹持支架2的固定端202。两个所述夹持段211合并形成夹紧结构210，两个所述连接段212远离所述夹持段211的末端相互连接，所述插入端124穿过所述夹紧结构210且与两个所述连接段212相抵接。
在本实施例中，由于所述插入端124抵接两个所述连接段212(如图3加粗处所示)，因此两个所述连接段212与所述侧壁12之间均无间隙，所述夹持支架2与所述罩体1之间封闭且连续地连接，实现双重密封，位于所述屏蔽罩100内的所述元器件300的电磁波难以穿过双重密封辐射出去，所述屏蔽罩100的屏蔽效果极佳。
可选的，在两个所述夹持段211夹紧所述侧壁12且所述插入端124抵接两个所述连接段212时，两个所述夹持段211连续地抵触所述侧壁12(如图3加粗处所示)，所述夹持段211与所述侧壁12之间无缝连接。所述侧壁12包括相对设置的内表面121和外表面122。所述内表面121与所述夹持段211抵接以形成第一重密封，所述内表面121与所述连接段212抵接以形成第二重密封，所述外表面122与所述夹持段211抵接以形成第三重密封，所述外表面122与所述连接段212抵接以形成第四重密封。简言之，所述侧壁12与所述夹持支架2具有四个接触位置(如图3加粗处所示)，所述屏蔽罩100实现四重密封，进一步提升了屏蔽效果。
可以理解的，所述罩体1与所述夹持支架2配合实现四重密封时，所述侧壁12将所述夹持支架2内部空间分割成彼此独立的两个密封空间，所述屏蔽罩100内外的电磁波均难以穿越。
在其他实施方式中，所述夹紧结构210也可仅用于夹紧所述侧壁12，两个所述夹持段211间断式地抵触连接所述侧壁12，所述夹持段211与所述侧壁12之间存在间隙，所述屏蔽罩100通过两个所述连接段212与所述侧壁12的抵触连接实现封闭且连续地连接及双重密封。具体而言，每个所述夹持段211均包括 间隔设置的多个子夹持段，相邻的所述子夹持段之间镂空设置。所有的所述子夹持段均抵接所述侧壁12，以使两个所述夹持段211间断式地抵接所述侧壁12。两个所述夹持段211的所述多个子夹持段彼此相对设置或彼此错位设置。
可选的，所述夹持支架2采用金属材料。所述夹持支架2利用金属材料的韧性，实现轻微形变，且在形变状态下具有反弹力，从而使得所述侧壁12得以穿过所述夹紧结构210且被所述夹紧结构210夹紧。
可选的，两个所述夹持段211之间形成有间隙，所述间隙的宽度小于所述侧壁12的厚度。所述侧壁12穿过所述夹紧结构210时，挤压推开两个所述夹持段211，使两个所述夹持段211发生形变，两个所述夹持段211被挤压后产生反弹力，从而夹紧所述侧壁12。
进一步地，所述间隙的宽度可小于所述侧壁12厚度的一半，以提高所述夹紧结构210的夹紧力。
进一步地，两个所述夹持段211彼此相抵触，使得所述夹紧结构210具有很强的夹紧力，且加工难度小。
可选的，两个所述夹持臂21一体成型，从而简化所述夹持支架2的加工工艺，降低加工难度，同时也使得两个所述夹持臂21之间的连接关系更为可靠。两个所述夹持臂21采用同一个金属板一体加工成型，也能够避免因材料属性不同而出现形变状态或反弹力不同，保证了所述夹持支架2的加工良率。
如图3和图4所示，作为一种可选实施例，两个所述连接段212之间形成夹角。此时，两个所述连接段212形成一个类似V形的结构，所述侧壁12的所述插入端124穿过所述夹紧结构210后能够容易地抵触两个所述连接段212。所述内表面121和所述外表面122的远离所述顶壁11的边缘分别抵接于两个所述连接段212。
所述连接段212可为直线段或曲线段。当所述连接段212为曲线段时，两个所述连接段212的两端连接线之间形成夹角。所述夹角可小于等于150°。
如图5所示，作为一种可选实施例，两个所述连接段212共同形成U形槽，所述侧壁12插入所述U形槽，所述插入端124至少部分收容于所述U形槽内。所述侧壁12的所述内表面121和所述外表面122分别与所述U形槽的两个内槽壁实现面连接(如图5加粗处所示)，增大连接面积，从而进一步提高了所述屏蔽罩100的密封性能。
请一并参阅图2和图6，作为一种可选实施例，所述插入端124的远离所述顶壁11的底部的外端面123为弧面，使得所述侧壁12更易实现与两个所述连接段212的连接，即插入端124的底部与侧壁12之间的接触面积更大(如图6加粗处所示)。
可选的，所述外端面123的形状可与两个所述连接段212朝向彼此的表面的形状相匹配，使得所述外端面123与两个所述连接段212的接触面积更大，所述密封罩100的密封效果更佳。
请一并参阅图2、图3、图5以及图6，作为一种可选实施例，两个所述连接段212远离所述夹持段211的一端焊接至所述电路板200。所述连接段212部分焊接至所述电路板200，而非全部焊接至所述电路板200，能够节约所述连接段212所需占用的所述电路板200的空间，使得所述电路板200有更多的空间用于排布其它元器件或线路，有利于所述电路板200的小型化。其中，所述连接段212可焊接至所述电路板200的内层。
请一并参阅图2至图6，作为一种可选实施例，每个所述夹持臂21均包括光滑地连接于所述夹持段211与所述连接段212之间的中间段213。两个所述中间段213均朝向远离彼此的方向凸起，使得所述夹持臂21的长度较长，形变范围较大，弹性回复性能较佳。此时，所述夹持支架2内形成所述收容腔20。
可选的，所述夹持段211的远离所述中间段213的一端向所述夹持支架2的内部延伸，能够降低所述夹持支架2的高度，使得所述屏蔽罩100体积较小。如图3至图6所示，所述夹持支架2呈心形。
当然，在其他实施方式中，所述夹持段211的远离所述中间段213的一端也可以向所述夹持支架2的外部延伸。
以上对本发明实施例进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (10)

  1. 一种屏蔽罩，包括罩体和夹持支架，所述罩体包括顶壁和封闭式围设于所述顶壁周边的侧壁，其特征在于，所述夹持支架封闭式固定至电路板，所述夹持支架收容且夹持所述侧壁的远离所述顶壁的插入端。
  2. 如权利要求1所述的屏蔽罩，其特征在于，所述夹持支架包括对称设置的两个夹持臂，每个所述夹持臂均包括夹持段和自所述夹持段延伸出的连接段，两个所述夹持段合并形成夹紧结构，两个所述连接段的远离所述夹持段的末端相互连接，所述插入端穿过所述夹紧结构且与两个所述连接段相抵接。
  3. 如权利要求2所述的屏蔽罩，其特征在于，所述夹持支架采用金属材料。
  4. 如权利要求2所述的屏蔽罩，其特征在于，两个所述夹持臂一体成型。
  5. 如权利要求2所述的屏蔽罩，其特征在于，两个所述连接段之间形成有夹角。
  6. 如权利要求2所述的屏蔽罩，其特征在于，两个所述连接段共同形成有U形槽，所述插入端收容于所述U形槽。
  7. 如权利要求2至6任一项所述的屏蔽罩，其特征在于，所述插入端的远离所述顶壁的外端面为弧面。
  8. 如权利要求2至6任一项所述的屏蔽罩，其特征在于，两个所述连接段的彼此连接的一端焊接至所述电路板。
  9. 如权利要求2至6任一项所述的屏蔽罩，其特征在于，每个所述夹持臂均包括光滑地连接于所述夹持段与所述连接段之间的中间段，两个所述中间段均朝向远离彼此的方向凸起。
  10. 如权利要求9所述的屏蔽罩，其特征在于，所述夹持段的远离所述中间段的一端向所述夹持支架的内部延伸。
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