WO2023138151A1 - 光模块 - Google Patents
光模块 Download PDFInfo
- Publication number
- WO2023138151A1 WO2023138151A1 PCT/CN2022/128841 CN2022128841W WO2023138151A1 WO 2023138151 A1 WO2023138151 A1 WO 2023138151A1 CN 2022128841 W CN2022128841 W CN 2022128841W WO 2023138151 A1 WO2023138151 A1 WO 2023138151A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pull ring
- housing
- optical module
- conductive
- metal layer
- Prior art date
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
Definitions
- the utility model relates to the technical field of optical communication, in particular to an optical module.
- EMI Electromagnetic Interference
- the object of the present invention is to provide an optical module and an optical device having the optical module.
- an optical module including:
- the casing includes a side wall, and a guide groove provided on the side wall;
- a pull ring assembly which is movably connected with the housing, the pull ring assembly includes a pull ring shrapnel, and the pull ring shrapnel is arranged in the guide groove;
- the conductive part is arranged between the side wall and the elastic piece of the pull ring.
- the conductive member includes a metal layer, and the metal layer is electrically conductively connected to the side wall and the tab elastic piece.
- the conductive member further includes an elastic conductive layer and a first adhesive layer, and the metal layer is electrically connected to the elastic conductive layer;
- the elastic conductive layer is pasted on the housing through the first adhesive layer, and the tab assembly is in contact with the metal layer, or the elastic conductive layer is pasted on the tab assembly through the first adhesive layer, and the housing is in contact with the metal layer.
- the metal layer is arranged in a square shape, and the width of the pull ring shrapnel is the same as that of the metal layer.
- the elastic conductive layer is made of a material with sparse pores, and when pressure is applied on the surface of the metal layer, the thickness of the elastic conductive layer decreases;
- the material of the elastic conductive layer is set as conductive cloth or conductive foam.
- the conductive member is used to make the elastic piece of the pull ring protrude outward from the plane where the side wall is located.
- the conductive member is fixedly connected to the side wall or the pull ring elastic piece, and the pull ring elastic piece is slidably connected in the guide groove.
- the conductive member is in relatively smooth contact with the side wall or the elastic piece of the pull ring.
- the housing includes the side walls on the left and right sides and the guide groove provided on each of the side walls
- the pull ring assembly includes ring shrapnel respectively arranged on the left and right sides of the housing
- the conductive parts are arranged between the pull ring shrapnel on the left side and the housing, and between the ring shrapnel on the right side and the housing.
- the conductive element on the left side and the conductive element on the right side are arranged symmetrically on the left and right sides of the housing.
- the utility model has the following beneficial effects: the structure of the optical module is reasonable.
- the conductive part fills the gap between the pull ring assembly and the housing, which can prevent electromagnetic waves from leaking out of the gap to cause EMI problems.
- Fig. 1 is a schematic structural view of an optical device according to an embodiment of the present invention.
- Fig. 2 is an exploded view of an optical module according to an embodiment of the present invention.
- Fig. 3 is a structural schematic diagram of the assembly position relationship between the pull ring assembly and the conductive member in another embodiment of the present invention.
- Fig. 4 is a diagram of the installation positions of the housing, the conductive parts and the pull ring shrapnel according to an embodiment of the present invention
- Fig. 5 is a schematic structural view of a conductive member according to an embodiment of the present invention.
- optical device 100, optical module; 10, housing; 11, side wall; 12, guide groove; 20, pull ring assembly; 21, pull ring shrapnel; 30, conductive member; 301, void; 31, metal layer;
- An embodiment of the present invention provides an optical module and an optical device having the optical module.
- the optical module is shown in FIG. 1 or FIG. 2, and the optical device is shown in FIG. Interference, hereinafter referred to as EMI) problem.
- EMI Interference
- the optical device 1000 of this embodiment includes a slot cage 200 having a plug interface, and the optical module 100 is pluggably connected to the slot cage 200 .
- the optical module 100 is inserted into the socket cage 200 toward the socket.
- the optical device 1000 further includes a conductive spring 201 connected to the socket cage 200 .
- the front and rear directions are defined by the insertion and removal direction of the optical module 100, and the insertion direction of the optical module 100 is specifically defined as "front”, and the extraction direction of the optical module 100 is specifically defined as "rear”.
- the optical module 100 includes a housing 10, a tab assembly 20, and a conductive member 30.
- the conductive member 30 has conductivity, and the conductivity of the conductive member 30 makes it have an excellent electromagnetic shielding effect, that is, the conductive member 30 plays the role of electromagnetic interference shielding in this embodiment.
- the conductive member 30 can be made of the same material, such as metal, conductive foam, etc., or can be a composite of multi-layer materials, such as metal, conductive foam, conductive glue and other multi-layer materials.
- the pull ring assembly 20 is movably connected with the casing 10 , and the conductive member 30 is disposed between the casing 10 and the pull ring assembly 20 .
- the pull ring assembly 20 includes a pull ring elastic piece 21, the housing 10 includes a side wall 11, and a guide groove 12 disposed on the side wall 11, the pull ring elastic piece 21 is disposed in the guide groove 12, and the conductive member 30 can be arranged between the side wall 11 and the pull ring elastic piece 21.
- the conductive member 30 includes a metal layer 31, an elastic conductive layer 33 and a first adhesive layer 34, the metal layer 31 is electrically connected to the elastic conductive layer 33, and the elastic conductive layer 33 is pasted on the object to be pasted by the first adhesive layer 34.
- the conductive member 30 also includes a second adhesive layer 32, the metal layer 31 is pasted on the elastic conductive layer 33 through the second adhesive layer 32, the materials of the first adhesive layer 34 and the second adhesive layer 32 are all set as conductive adhesive, combined with the conductivity of the metal layer 31 and the electrical conductivity of the elastic conductive layer 33, so the conductivity of the conductive member 30 makes it have excellent electromagnetic shielding effect.
- the metal layer 31 can also be connected to the elastic conductive layer 33 by welding, clamping, etc., so as to ensure the reliability and conductivity of the connection between the metal layer 31 and the elastic conductive layer 33 .
- the elastic conductive layer 33 is made of a material with sparse pores, and when pressure is applied on the surface of the metal layer 31 , the thickness of the elastic conductive layer 33 decreases. That is to say, the elastic conductive layer 33 can be compressed, and its thickness decreases when subjected to an external force, and can also return to its original thickness when the external force is removed.
- the distance between the tab assembly 20 and the housing 10 can change.
- the elastic conductive layer 33 is compressed, and the elastic conductive layer 33 has a tendency to drive the tab assembly 20 away from the housing 10 under the action of its own elastic force.
- the elastic conductive layer 33 resumes its deformation, so that the tab assembly 20 returns to its original position.
- the material of the elastic conductive layer 33 is set as conductive cloth or conductive foam, which has a fluffy texture and meets the requirements of the elastic deformation of the elastic conductive layer 33 and its return to the original thickness after deformation.
- the metal layer 31 can be set as a material with good conductivity such as copper foil, aluminum foil or silver foil.
- the side of the metal layer 31 away from the elastic conductive layer 33 can be provided with a conductive anti-rust coating.
- the coating can reduce the coefficient of friction and make the relative sliding resistance between the metal layer 31 and other external parts smaller.
- the metal layer 31 is sheet-shaped, and on a plane parallel to the metal layer 31 : the area of the metal layer 31 is larger than that of the first adhesive layer 34 , and the metal layer 31 completely covers the first adhesive layer 34 , as shown in FIG. 5 . Since the area of the metal layer 31 is larger, and in a direction perpendicular to the plane where the metal layer 31 is located, the first adhesive layer 34 is completely inside the orthographic projection of the metal layer 31 . When the first adhesive layer 34 is squeezed or has a tendency to flow after being heated, the expanded first adhesive layer 34 is still inside the orthographic projection of the metal layer 31 .
- the area of the elastic conductive layer 33 is equal to that of the first adhesive layer 34 , and the elastic conductive layer 33 completely covers the first adhesive layer 34 . That is to say, the positions where the elastic conductive layer 33 and the first adhesive layer 34 are bonded have the same shape and area, so that the elastic conductive layer 33 and the surface of the object to be pasted can be pasted more firmly without loosening or warping. That is to say, the area of the metal layer 31 is larger than that of the elastic conductive layer 33, and the metal layer 31 completely covers the elastic conductive layer 33, as shown in FIG.
- the area of the metal layer 31 is equal to the second glue layer 32, and the metal layer 31 completely covers the second glue layer 32.
- the distance between the edge of the metal layer 31 and the edge of the adjacent elastic conductive layer 33 is no more than 5 mm. In practice, it can be about 1 mm, that is, the distance between the edge of the metal layer 31 and the edge of the elastic conductive layer 33 in FIG.
- both the metal layer 31 and the elastic conductive layer 33 are arranged in a square shape, and the length and/or width of the elastic conductive layer 33 are smaller than the metal layer 31 .
- the center point of the elastic conductive layer 33 and the center point of the metal layer 31 are both on the first extension line, and the first extension line is perpendicular to the plane where the metal layer 31 is located.
- the center positions of the metal layer 31 and the elastic conductive layer 33 are the same, and the structure is symmetrical. That is to say, the width of the gaps 301 on the upper and lower sides of the elastic conductive layer 33 is the same, and the width of the gaps 301 on the front and rear sides is the same, so that the glue is not easy to overflow from the side with a smaller distance to the outside of the metal layer 31.
- the following describes the installation of the conductive member 30 from the perspective of the optical module 100. There are two implementation modes for the installation of the conductive member 30:
- the elastic conductive layer 33 is pasted on the housing 10 through the first adhesive layer 34 , and the tab assembly 20 is in contact with the metal layer 31 .
- the tab assembly 20 is in contact with the metal layer 31 .
- the elastic conductive layer 33 is pasted on the tab assembly 20 through the first adhesive layer 34, and the housing 10 is in contact with the metal layer 31.
- the spatial position of the conductive member 30 in FIG. 3 to illustrate the installation method of this embodiment.
- the elastic conductive layer 33 When the distance between the pull ring shrapnel 21 and the housing 10 tends to decrease, the elastic conductive layer 33 has a tendency to drive the pull ring shrapnel 21 away from the housing 10, and the elastic conductive layer 33 increases the elasticity of the pull ring shrapnel 21, so that the pull ring shrapnel 21 can be in better contact with the conductive shrapnel 201 on the slot cage 200, avoiding the gap between the optical module 100 and the slot cage 200, and the pull ring shrapnel 21 not in contact with the conductive shrapnel 201. circuit breaker problem.
- the conductive member 30 is used to make the pull ring shrapnel 21 protrude outward from the plane where the side wall 11 is located. That is to say, when there is no external pressure, because the conductive member 30 is squeezed between the pull ring shrapnel 21 and the side wall 11, the pull ring shrapnel 21 is pushed away from the side wall 11 by the conductive member 30 until the end of the pull ring shrapnel 21 away from the side wall protrudes from the plane where the side wall 11 is located. Just contact the conductive shrapnel 201 on the child.
- the conductive element 30 is fixedly connected to the side wall 11 or the tab elastic piece 21 , which means that the conductive element 30 can be connected to the side wall 11 or the tab elastic piece 21 by bonding, welding, snap-fit connection and the like.
- the pull ring elastic piece 21 is slidably connected in the guide groove 12. After the housing 10 and the pull ring assembly 20 are assembled together in the housing structure of the optical module 100, when the pull ring assembly 20 is pulled, the pull ring elastic piece 21 can slide back and forth in the guide groove 12 on both sides of the housing 10. In addition, locking and unlocking can be performed through the locking structure on the optical module 100 , so as to realize the function of installing and dismounting the optical module 100 and the slot cage 200 .
- the conductive member 30 is in relatively smooth contact with the side wall 11 or the pull ring elastic piece 21, so that the pull ring assembly 20 slides back and forth, on the one hand, the conductive member 30 is always held between the side wall 11 and the pull ring elastic piece 21, and on the other hand, the smooth sliding of the pull ring assembly 20 is guaranteed.
- the metal layer 31 is in contact with the side wall 11 or the elastic tab 21 of the pull ring.
- the surface of the metal layer 31 is smooth and has low roughness, so that it can be in contact with other components relatively smoothly.
- the metal layer 31 is set in a square shape, and the width of the pull ring shrapnel 21 is the same as that of the metal layer 31.
- the width of the pull ring shrapnel 21 and the width of the metal layer 31 are both thicknesses in the up and down direction.
- the leakage of electromagnetic waves is from front to back and diffuses outward through the gap between the optical module 100 and the housing 10, so the filling in the up and down direction can completely fill the gap and avoid the leakage of electromagnetic waves.
- the tab assembly 20 includes tab shrapnel 21 respectively arranged on the left and right sides of the housing 10 , between the tab shrapnel 21 on the left side and the housing 10 , and between the tab shrapnel 21 on the right side and the housing 10 , conductive elements 30 are provided. And the conductive element 30 on the left side and the conductive element 30 on the right side are symmetrically arranged on the left and right sides of the casing 10 .
- the conductive parts 30 are arranged symmetrically on the left and right sides, so that the pull ring elastic piece 21 on the left has a tendency to move to the left, and the pull ring elastic piece 21 on the right has a tendency to move to the right.
- both sides can be fully filled, and on the other hand, the force on both sides is even.
- the conductive member 30 is directly arranged on the pull ring assembly 20 and the housing 10, the pull ring shrapnel 21 will be partially lifted up. If the thickness of the conductive member 30 is thin, it is within the range of the gap, so the conductive member 30 can be added on the basis of the existing optical module 100, as shown in FIG. 2 .
- a groove body can be provided on the surface of the side wall 11, and the conductive member 30 is partially embedded in the groove body, that is, the groove body is opened inward on the basis of the guide groove 12, so as to avoid the interference problem that the optical module 100 cannot be inserted into the slot cage 200.
- this embodiment has the following beneficial effects:
- the conductive member 30 fills the gap between the pull ring assembly 20 and the housing 10, which can prevent electromagnetic waves from leaking out of the gap to cause EMI problems.
- the conductive member 30 fills the gap, which can make the housing 10 and the pull ring assembly 20 have better electrical contact, and the elasticity of the elastic conductive layer 33 allows the pull ring assembly 20 to be more closely against the conductive shrapnel 201 of the slot cage 200, and the grounding effect is better. The effect of protecting against electrostatic discharge.
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Abstract
一种光模块（100）及光学装置（1000）。光模块（100）包括壳体（10）、拉环组件（20）和导电件（30）。拉环组件（20）与壳体（10）活动连接，导电件（30）设置于壳体（10）和拉环组件（20）之间，导电件（30）填充了拉环组件（20）和壳体（10）之间的缝隙，可以防止电磁波从缝隙泄漏出去产生EMI问题。导电件（30）填充了该缝隙，可以使壳体（10）和拉环组件（20）更好的电接触，以及弹性导电层（33）的弹性使得拉环组件（20）可以更紧密地与插槽笼子（200）的导电弹片（201）抵持，接地效果更好，在解决EMI问题的同时实现了更好的防护静电放电的效果。
Description
本实用新型涉及光通讯技术领域，尤其涉及一种光模块。
随着金属封装的光收发模块的传输速率加快，越来越多地涉及电磁干扰EMI(Electromagnetic Interference，以下简称EMI)，即使是细微的结构缝隙，也会很容易导致模块产生的电磁波从间隙泄漏出去产生EMI问题，影响其他电子元件的正常运行。而受限于整体一体成型的结构难于生产和组装，相邻结构的拼接的壳体不可避免地存在缝隙，因此EMI难于避免。
另外在解决EMI问题的过程中，还需要避免因解决该问题而带来的其他新的问题，例如避免电路的接触不良、或者影响光模块的正常使用，需要在能工作状态的基础上避免EMI问题。
为解决上述现有技术问题中的至少其一，本实用新型的目的在于提供一种光模块以及具有该光模块的光学装置。
为实现上述实用新型目的，本实用新型一实施方式提供一种光模块，包括：
壳体，所述壳体包括侧壁、以及设置于所述侧壁上的导向槽；
拉环组件，其与所述壳体活动连接，所述拉环组件包括拉环弹片，所述拉环弹片设置于所述导向槽内；
导电件，其设置于所述侧壁和所述拉环弹片之间。
作为本实用新型的进一步改进，所述导电件包括金属层，所述金属层电导通连接于所述侧壁和所述拉环弹片。
作为本实用新型的进一步改进，所述导电件还包括弹性导电层和第一胶层，所述金属层电导通连接于所述弹性导电层；
所述弹性导电层通过所述第一胶层粘贴于所述壳体、所述拉环组件与所述金属层相抵接，或者，所述弹性导电层通过所述第一胶层粘贴于所述拉环组件、所述壳体与所述金属层相抵接。
作为本实用新型的进一步改进，所述金属层设置为方形，所述拉环弹片的宽度与所述金属层的宽度相同。
作为本实用新型的进一步改进，所述弹性导电层设置为具有稀疏孔隙的材料，当在所述金属层表面施加压力时，所述弹性导电层的厚度减小；
所述弹性导电层的材料设置为导电布或导电泡棉。
作为本实用新型的进一步改进，所述导电件用于使所述拉环弹片向外凸出于所述侧壁所在的平面。
作为本实用新型的进一步改进，所述导电件固定连接于所述侧壁或所述拉环弹片，所述拉环弹片滑动连接于所述导向槽内。
作为本实用新型的进一步改进，所述导电件与所述侧壁或所述拉环弹片相对光滑地接触。
作为本实用新型的进一步改进，所述壳体包括左右两侧的所述侧壁、以及设置于每个所述侧壁上的所述导向槽，所述拉环组件包括分别设置于所述壳体左右两侧的拉环弹片，左侧的所述拉环弹片与所述壳体之间、以及右侧的所述拉环弹片与所述壳体之间，均设置所述导电件。
作为本实用新型的进一步改进，左侧的所述导电件和右侧的所述导电件，对称设置于所述壳体的左右两侧。
与现有技术相比，本实用新型具有以下有益效果：该光模块的结构合理，一方面导电件填充了拉环组件和壳体之间的缝隙，可以防止电磁波从缝隙泄漏出去产生EMI问题，另一方面导电件填充了该缝隙，可以使壳体和拉环组件更好的电接触，以及弹性导电层的弹性使得拉环组件可以更紧密地与插槽笼子的导电弹片抵持，接地效果更好，在解决EMI问题的同时实现了更好的防护静电放电的效果。
图1是本实用新型一实施例的光学装置的结构示意图；
图2是本实用新型其一实施例的光模块的爆炸图；
图3是本实用新型另一实施例的拉环组件和导电件的组装位置关系的结构示意图；
图4是本实用新型一实施例的壳体、导电件和拉环弹片的安装位置关系图；
图5是本实用新型一实施例的导电件的结构示意图；
其中，1000、光学装置；100、光模块；10、壳体；11、侧壁；12、导向槽；20、拉环组件；21、拉环弹片；30、导电件；301、空隙；31、金属层；32、第二胶层；33、弹性导电层；34、第一胶层；200、插槽笼子；201、导电弹片。
以下将结合附图所示的具体实施方式对本实用新型进行详细描述。但这些实施方式并不限制本实用新型，本领域的普通技术人员根据这些实施方式所做出的结构、方法、或功能上的变换均包含在本实用新型的保护范围内。
应该理解，本文使用的例如“上”、“上方”、“下”、“下方”等表示空间相对位置的术语是出于便于说明的目的来描述如附图中所示的一个单元或特征相对于另一个单元或特征的关系。空间相对位置的术语可以旨在包括设备在使用或工作中除了图中所示方位以外的不同方位。
本实用新型一实施例提供一种光模块以及具有该光模块的光学装置，光模块参图1或图2所示，光学装置参图1所示，通过对光模块的结构改进设计，避免了光学装置的电磁波泄漏出去产生EMI(Electromagnetic
Interference，以下简称EMI)问题。
本实施例的光学装置1000包括插槽笼子200，插槽笼子200具有插接口，光模块100与插槽笼子200可插拔连接。在图1中，光模块100朝向插接口插入插槽笼子200内，光学装置1000还包括连接于插槽笼子200的导电弹片201，光模块100抵接于导电弹片201与其电接触连接。
为了便于理解和说明，在后文中，以光模块100的插拔方向定义出前后方向，并且，以光模块100的插入方向具体定义为“前”，以光模块100的拔出方向具体定义为“后”，同时，以与插拔方向以及竖直方向均相垂直的方向定义出左右方向，竖直方向定义出上下方向。
光模块100包括壳体10，拉环组件20和导电件30，顾名思义的，导电件30具有导电性，导电件30的导电性使其具有优良的电磁屏蔽效果，也就是说，所以导电件30在本实施例中起到电磁干扰屏蔽的作用。
导电件30可以是同一材料构成的件，如金属、导电泡棉等，也可以是多层材料复合，如金属、导电泡棉、导电胶等多层材料构成。
如图2所示，拉环组件20与壳体10活动连接，导电件30设置于壳体10和拉环组件20之间。
更具体地，拉环组件20包括拉环弹片21，壳体10包括侧壁11、以及设置于侧壁11上的导向槽12，拉环弹片21设置于导向槽12内，导电件30可以设置于侧壁11和拉环弹片21之间。
为了更清楚地说明导电件30的具体连接方式、以及便于理解图2和图3的区别，先对导电件30的具体结构进行描述。
参图5所示，导电件30包括金属层31、弹性导电层33和第一胶层34，金属层31电连接于弹性导电层33，弹性导电层33通过第一胶层34粘贴于待粘贴件。导电件30还包括第二胶层32，金属层31通过第二胶层32粘贴于弹性导电层33，第一胶层34和第二胶层32的材料均设置为导电胶，结合金属层31的导电性、弹性导电层33的导电性，所以导电件30的导电性使其具有优良的电磁屏蔽效果。
金属层31也可以通过焊接、卡接等形式连接至弹性导电层33，保障金属层31与弹性导电层33之间的连接的可靠性和导电性。
弹性导电层33设置为具有稀疏孔隙的材料，当在金属层31表面施加压力时，弹性导电层33的厚度减小。也就是说，弹性导电层33可以被压缩，受到外力时其厚度减小，当外力撤除后，也可恢复至原厚度。
进一步地，拉环组件20与壳体10之间的距离可以产生变化，当拉环组件20与壳体10之间的距离存在减少的趋势时，弹性导电层33被压缩，弹性导电层33在自身弹力的作用下，弹性导电层33具有驱使拉环组件20远离壳体10的趋势。当外力撤除后，弹性导电层33恢复形变，使拉环组件20回到原来的位置。
弹性导电层33的材料设置为导电布或导电泡棉，具有蓬松的质地，满足弹性导电层33的弹性形变、以及形变后可恢复至原厚度的需求。
以及，金属层31可以设置为铜箔、铝箔或银箔等具有良好导电性的材料，金属层31远离弹性导电层33的一侧可以设置导电防锈涂层，一方面长期使用也能防止生锈，另一方面设置涂层后可以减小摩擦系数，使金属层31与外界的其他零件之间的相对滑动阻力更小。
金属层31为片状，在平行于金属层31所在的平面上：金属层31面积大于第一胶层34，且金属层31完全覆盖第一胶层34，参图5所示。由于金属层31的面积更大，且在垂直于金属层31所在平面的方向上，第一胶层34完全在金属层31的正投影的内部。当第一胶层34受到挤压、或者受热后具有流动的趋势时，扩张后的第一胶层34仍在金属层31的正投影内部。
另外，在平行于金属层31所在的平面上：弹性导电层33面积等于第一胶层34，且弹性导电层33完全覆盖第一胶层34。也就是说，弹性导电层33与第一胶层34粘接的位置，两者的形状一致、面积一致，这样可以使弹性导电层33与待粘贴物的表面粘贴得更加牢固不会松动，不会翘边。也就是说，金属层31的面积大于弹性导电层33，且金属层31完全覆盖弹性导电层33，如图5所示，这样在金属层31和弹性导电层33之间可以预留出空隙301，在该空隙301的位置可以容纳第一胶层34溢出的胶。
以及，结合上述的在金属层31和弹性导电层33之间以第二胶层32连接的实施例进行说明，在平行于金属层31所在的平面上：金属层31面积等于第二胶层32，且金属层31完全覆盖第二胶层32。在弹性导电层33通过第一胶层34粘贴于待粘贴物表面后，金属层31通过空隙301位置的第二胶层32与待粘贴物表面粘贴，以及部分溢出的第一胶层34也可以参与金属层31和待粘贴物表面的粘贴。
金属层31的边缘至与其相邻的弹性导电层33的边缘的距离不超过5毫米，实践中，可以是1mm左右，也就是图5中金属层31的边缘和弹性导电层33边缘之间的间距是1mm左右，该空隙301的长度足够容纳溢出的胶，又不会因空隙301过大使连接不牢固。
另外如图2~5所示，金属层31和弹性导电层33均设置为方形，弹性导电层33的长度，和/或，宽度小于金属层31。以及，弹性导电层33的中心点和金属层31的中心点均在第一延长线上，第一延长线垂直于金属层31所在的平面。
金属层31和弹性导电层33两者的中心位置相同，结构对称，也就是说，弹性导电层33的上下两侧空隙301宽度相同，前后两侧空隙301宽度相同，使胶不易从距离较小的一侧溢出至金属层31外侧。
下文从光模块100的角度说明导电件30的安装，导电件30的安装方式存在两种实施方式：
在其一实施例中，如图2所示，弹性导电层33通过第一胶层34粘贴于壳体10上，拉环组件20与金属层31相抵接。具体地，参图2中的导电件30的空间位置以示出该实施例的安装方式，图2中的空隙301朝向壳体10、且远离拉环组件20，以示出导电件30粘贴在壳体10上，金属层31与拉环组件20抵接。
在另一实施例中，如图3所示，弹性导电层33通过第一胶层34粘贴于拉环组件20、壳体10与金属层31相抵接，具体地，参图3中的导电件30的空间位置以示出该实施例的安装方式，图3中的空隙301朝向拉环组件20、且远离壳体10，以示出导电件30粘贴在拉环组件20上，金属层31与壳体10抵接。
当拉环弹片21与壳体10之间的距离存在减少的趋势时，弹性导电层33具有驱使拉环弹片21远离壳体10的趋势，弹性导电层33增加了拉环弹片21的弹性，这样拉环弹片21可以与插槽笼子200上的导电弹片201更好的接触，避免了因为光模块100与插槽笼子200的缝隙过大，拉环弹片21未与导电弹片201接触导致的断路问题。
以及，导电件30用于使拉环弹片21向外凸出于侧壁11所在的平面，也就是说，在未受到外界压力时，由于导电件30挤在拉环弹片21和侧壁11之间，所以拉环弹片21被导电件30推向远离侧壁11的方向，直到拉环弹片21远离侧壁的一端凸出于侧壁11所在的平面，这里可以是略微的凸出，使其能够保障拉环弹片21与插槽笼子上的导电弹片201接触即可。
另外，导电件30固定连接于侧壁11或所述拉环弹片21，体现在导电件30可以通过粘接、焊接、卡合连接等形式连接于侧壁11或所述拉环弹片21。
拉环弹片21滑动连接于导向槽12内，在光模块100的外壳结构中壳体10与拉环组件20组装在一起后，拉动拉环组件20时，拉环弹片21可以在壳体10两侧的导向槽12内前后滑动。另外可以通过光模块100上的锁定结构进行锁定解锁，从而实现光模块100与插槽笼子200的安装和拆卸的功能。
以及，导电件30与侧壁11或拉环弹片21相对光滑地接触，使得拉环组件20在前后滑动的过程中，一方面保持导电件30始终抵持在侧壁11和拉环弹片21之间，另一方面又保障了拉环组件20的滑动顺畅。本实施例中，与侧壁11或拉环弹片21接触的是金属层31，金属层31的表面光滑，粗糙度低，使其可以与其他部件相对光滑地接触。
进一步地，金属层31设置为方形，拉环弹片21的宽度与金属层31的宽度相同，拉环弹片21的宽度和金属层31的宽度均是在上下方向上的厚度，电磁波的泄露，是从前向后的方式，经过光模块100和壳体10之间的缝隙向外扩散，所以在上下方向的填充，可以将缝隙完全填充，避免电磁波的泄露。
如图2或3所示，拉环组件20包括分别设置于壳体10左右两侧的拉环弹片21，左侧的拉环弹片21与壳体10之间、以及右侧的拉环弹片21与壳体10之间，均设置导电件30。以及左侧的导电件30和右侧的导电件30，对称设置于壳体10的左右两侧。
在左右两侧对称地设置导电件30，使左侧的拉环弹片21具有向左运动的趋势，右侧的拉环弹片21具有向右运动的趋势，一方面两侧均可以充分填充，另一方面两侧受力均匀。
另外，一般地，由于装配公差的需求，光模块100和插槽笼子200之间本就预留有缝隙，所以直接在拉环组件20和壳体10直接设置导电件30后，拉环弹片21会被部分的顶起，若导电件30的厚度较薄，在该缝隙的范围内，所以可以在现有的光模块100的基础上增加该导电件30，如图2所示。
若导电件30的厚度较厚，可以在侧壁11表面设置槽体，导电件30部分嵌入槽体内，也就是在导向槽12的基础上再向内开出槽体，避免光模块100无法插入插槽笼子200内，产生干涉的问题。
与现有技术相比，本实施例具有以下有益效果：
该光模块100的结构合理，一方面导电件30填充了拉环组件20和壳体10之间的缝隙，可以防止电磁波从缝隙泄漏出去产生EMI问题，另一方面导电件30填充了该缝隙，可以使壳体10和拉环组件20更好的电接触，以及弹性导电层33的弹性使得拉环组件20可以更紧密地与插槽笼子200的导电弹片201抵持，接地效果更好，在解决EMI问题的同时实现了更好的防护静电放电的效果。
应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施方式中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。
上文所列出的一系列的详细说明仅仅是针对本实用新型的可行性实施方式的具体说明，它们并非用以限制本实用新型的保护范围，凡未脱离本实用新型技艺精神所作的等效实施方式或变更均应包含在本实用新型的保护范围之内。
Claims (10)
- 一种光模块，其特征在于，包括：壳体，所述壳体包括侧壁、以及设置于所述侧壁上的导向槽；拉环组件，其与所述壳体活动连接，所述拉环组件包括拉环弹片，所述拉环弹片设置于所述导向槽内；导电件，其设置于所述侧壁和所述拉环弹片之间。
- 根据权利要求1所述的光模块，其特征在于，所述导电件包括金属层，所述金属层电导通连接于所述侧壁和所述拉环弹片。
- 根据权利要求2所述的光模块，其特征在于，所述导电件还包括弹性导电层和第一胶层，所述金属层电导通连接于所述弹性导电层；所述弹性导电层通过所述第一胶层粘贴于所述壳体、所述拉环组件与所述金属层相抵接，或者，所述弹性导电层通过所述第一胶层粘贴于所述拉环组件、所述壳体与所述金属层相抵接。
- 根据权利要求3所述的光模块，其特征在于，所述金属层设置为方形，所述拉环弹片的宽度与所述金属层的宽度相同。
- 根据权利要求3所述的光模块，其特征在于，所述弹性导电层设置为具有稀疏孔隙的材料，当在所述金属层表面施加压力时，所述弹性导电层的厚度减小；所述弹性导电层的材料设置为导电布或导电泡棉。
- 根据权利要求1所述的光模块，其特征在于，所述导电件用于使所述拉环弹片向外凸出于所述侧壁所在的平面。
- 根据权利要求1所述的光模块，其特征在于，所述导电件固定连接于所述侧壁或所述拉环弹片，所述拉环弹片滑动连接于所述导向槽内。
- 根据权利要求7所述的光模块，其特征在于，所述导电件与所述侧壁或所述拉环弹片相对光滑地接触。
- 根据权利要求1所述的光模块，其特征在于，所述壳体包括左右两侧的所述侧壁、以及设置于每个所述侧壁上的所述导向槽，所述拉环组件包括分别设置于所述壳体左右两侧的拉环弹片，左侧的所述拉环弹片与所述壳体之间、以及右侧的所述拉环弹片与所述壳体之间，均设置所述导电件。
- 根据权利要求9所述的光模块，其特征在于，左侧的所述导电件和右侧的所述导电件，对称设置于所述壳体的左右两侧。
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| CN106873091A (zh) * | 2015-12-14 | 2017-06-20 | 日本奥兰若株式会社 | 光模块及光传送装置 |
| US20200041738A1 (en) * | 2018-07-31 | 2020-02-06 | Lumentum Operations Llc | Electromagnetic interference leakage reduction for a pluggable optical module |
| CN216792520U (zh) * | 2022-01-18 | 2022-06-21 | 苏州旭创科技有限公司 | 光模块 |
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| CN106772833A (zh) * | 2016-12-07 | 2017-05-31 | 青岛海信宽带多媒体技术有限公司 | 一种光模块 |
| US20200041738A1 (en) * | 2018-07-31 | 2020-02-06 | Lumentum Operations Llc | Electromagnetic interference leakage reduction for a pluggable optical module |
| CN216792520U (zh) * | 2022-01-18 | 2022-06-21 | 苏州旭创科技有限公司 | 光模块 |
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