CN216792520U

CN216792520U - Optical module

Info

Publication number: CN216792520U
Application number: CN202220131679.8U
Authority: CN
Inventors: 陈鹏; 施沙美
Original assignee: Innolight Technology Suzhou Ltd
Current assignee: Innolight Technology Suzhou Ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-06-21
Anticipated expiration: 2032-01-18
Also published as: WO2023138151A1

Abstract

The utility model discloses an optical module and an optical device, wherein the optical module comprises a shell, a pull ring component and a conductive piece, wherein the pull ring component is movably connected with the shell, the conductive piece is arranged between the shell and the pull ring component, the conductive piece fills a gap between the pull ring component and the shell, so that the electromagnetic wave can be prevented from leaking out from the gap to generate an EMI problem, in addition, the conductive piece fills the gap, the shell and the pull ring component can be better electrically contacted, the elasticity of an elastic conductive layer enables the pull ring component to be more tightly abutted against a conductive elastic sheet of an inserting groove cage, the grounding effect is better, and the better static discharge protection effect is realized while the EMI problem is solved.

Description

Optical module

Technical Field

The utility model relates to the technical field of optical communication, in particular to an optical module.

Background

With the increase of the transmission rate of the metal-packaged optical transceiver module, Electromagnetic Interference EMI (hereinafter referred to as EMI) is increasingly involved, and even a fine structural gap can easily cause the Electromagnetic wave generated by the module to leak out from the gap to cause an EMI problem, which affects the normal operation of other electronic components. The integral structure is difficult to produce and assemble, and the spliced shell of the adjacent structure inevitably has gaps, so that EMI is difficult to avoid.

In addition, in the process of solving the EMI problem, it is necessary to avoid other new problems caused by solving the EMI problem, for example, to avoid poor contact of a circuit or influence on normal use of an optical module, and to avoid the EMI problem on the basis of an operable state.

Disclosure of Invention

In order to solve at least one of the above-described problems of the related art, an object of the present invention is to provide an optical module and an optical apparatus having the same.

To achieve the above object, an embodiment of the present invention provides an optical module, including:

the shell comprises a side wall and a guide groove arranged on the side wall;

the pull ring assembly is movably connected with the shell and comprises a pull ring elastic sheet which is arranged in the guide groove;

and the conductive piece is arranged between the side wall and the pull ring elastic piece.

As a further improvement of the present invention, the conductive member includes a metal layer, and the metal layer is electrically connected to the sidewall and the tab spring.

As a further improvement of the present invention, the conductive device 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 conducting layer is pasted on the shell through the first glue layer, the pull ring assembly is abutted to the metal layer, or the elastic conducting layer is pasted on the pull ring assembly through the first glue layer, and the shell is abutted to the metal layer.

As a further improvement of the utility model, the metal layer is arranged in a square shape, and the width of the pull ring elastic sheet is the same as that of the metal layer.

As a further improvement of the present invention, the elastic conductive layer is provided as a material having sparse pores, and the thickness of the elastic conductive layer is reduced when pressure is applied to the surface of the metal layer;

the elastic conducting layer is made of conducting cloth or conducting foam.

As a further improvement of the present invention, the conductive member is used to make the tab elastic piece protrude outward from the plane of the side wall.

As a further improvement of the present invention, the conductive member is fixedly connected to the sidewall or the pull ring elastic piece, and the pull ring elastic piece is slidably connected to the guide groove.

As a further improvement of the present invention, the conductive member is in relatively smooth contact with the sidewall or the tab spring.

As a further improvement of the present invention, the casing includes the side walls on the left and right sides and the guide groove disposed on each of the side walls, the pull ring assembly includes pull ring elastic pieces disposed on the left and right sides of the casing, and the conductive pieces are disposed between the pull ring elastic piece on the left side and the casing and between the pull ring elastic piece on the right side and the casing.

As a further improvement of the present invention, the left conductive member and the right conductive member are symmetrically disposed on the left and right sides of the housing.

Compared with the prior art, the utility model has the following beneficial effects: the optical module is reasonable in structure, on one hand, the conducting piece is filled in a gap between the pull ring assembly and the shell, the electromagnetic wave can be prevented from leaking out from the gap to generate an EMI problem, on the other hand, the conducting piece is filled in the gap, the shell and the pull ring assembly can be in better electric contact, the elasticity of the elastic conducting layer enables the pull ring assembly to be more tightly abutted against the conducting elastic sheet of the slot cage, the grounding effect is better, and the better electrostatic discharge protection effect is realized while the EMI problem is solved.

Drawings

FIG. 1 is a schematic diagram of an optical device according to an embodiment of the present invention;

FIG. 2 is an exploded view of a light module according to one embodiment of the present invention;

FIG. 3 is a schematic structural view of an assembled positional relationship of a pull ring assembly and an electrically conductive member according to another embodiment of the present invention;

FIG. 4 is a diagram illustrating an installation position of the casing, the conductive member and the tab spring according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a conductive device according to an embodiment of the present invention;

1000, an optical device; 100. an optical module; 10. a housing; 11. a side wall; 12. a guide groove; 20. a pull ring assembly; 21. a pull ring spring plate; 30. a conductive member; 301. a void; 31. a metal layer; 32. a second adhesive layer; 33. an elastic conductive layer; 34. a first glue layer; 200. a slot cage; 201. a conductive spring.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.

It will be understood that terms used herein such as "upper," "above," "lower," "below," and the like, refer to relative positions in space and are used for convenience in description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

An embodiment of the present invention provides an optical module and an optical device having the same, where the optical module is shown in fig. 1 or fig. 2, and the optical device is shown in fig. 1, and through a structural improvement design of the optical module, an EMI (electro magnetic Interference, hereinafter abbreviated as EMI) problem caused by Electromagnetic wave leakage of the optical device is avoided.

The optical device 1000 of the present embodiment includes a slot cage 200, the slot cage 200 has a plug interface, and the optical module 100 is connected to the slot cage 200 in a pluggable manner. In fig. 1, the optical module 100 is inserted into the socket cage 200 toward the socket, the optical device 1000 further includes a conductive elastic piece 201 connected to the socket cage 200, and the optical module 100 abuts against the conductive elastic piece 201 and is electrically connected thereto.

For convenience of understanding and explanation, hereinafter, the front-back direction is defined as the insertion and extraction direction of the optical module 100, the insertion direction of the optical module 100 is specifically defined as "front", the extraction direction of the optical module 100 is specifically defined as "back", the left-right direction is defined as the direction perpendicular to the insertion and extraction direction and the vertical direction, and the vertical direction is defined as the vertical direction.

The optical module 100 comprises a housing 10, a tab assembly 20 and a conductive member 30, as the name implies, the conductive member 30 has conductivity, and the conductivity of the conductive member 30 makes it have excellent electromagnetic shielding effect, that is, the conductive member 30 plays a role of electromagnetic interference shielding in the present embodiment.

The conductive member 30 may be a member made of the same material, such as metal, conductive foam, or a composite material of multiple layers, such as metal, conductive foam, conductive adhesive, or other materials.

As shown in fig. 2, the tab assembly 20 is movably connected to the casing 10, and the conductive member 30 is disposed between the casing 10 and the tab assembly 20.

More specifically, the tab assembly 20 includes a tab spring 21, the housing 10 includes a sidewall 11 and a guide groove 12 disposed on the sidewall 11, the tab spring 21 is disposed in the guide groove 12, and the conductive member 30 may be disposed between the sidewall 11 and the tab spring 21.

In order to more clearly illustrate a specific connection manner of the conductive members 30 and to facilitate understanding of differences between fig. 2 and 3, a specific structure of the conductive members 30 will be described.

Referring to fig. 5, the conductive device 30 includes a metal layer 31, an elastic conductive layer 33 and a first adhesive layer 34, wherein the metal layer 31 is electrically connected to the elastic conductive layer 33, and the elastic conductive layer 33 is adhered to the member to be adhered through the first adhesive layer 34. The conductive device 30 further includes a second adhesive layer 32, the metal layer 31 is adhered to 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 both conductive adhesives, and the conductivity of the metal layer 31 and the conductivity of the elastic conductive layer 33 are combined, so that the conductive device 30 has excellent electromagnetic shielding effect due to the conductivity.

The metal layer 31 may also be connected to the elastic conductive layer 33 by soldering, clamping, etc., which ensures the reliability and conductivity of the connection between the metal layer 31 and the elastic conductive layer 33.

The elastic conductive layer 33 is provided as a material having a sparse porosity, and the thickness of the elastic conductive layer 33 is reduced when pressure is applied to the surface of the metal layer 31. That is, the elastic conductive layer 33 can be compressed, and its thickness is reduced when receiving an external force, and it can be restored to its original thickness when the external force is removed.

Further, the distance between the tab assembly 20 and the casing 10 may vary, and when there is a tendency for the distance between the tab assembly 20 and the casing 10 to decrease, 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 casing 10 under the action of its own elasticity, and the elastic conductive layer 33 has a tendency to move away from the casing 10. When the force is removed, the resilient conductive layer 33 returns to its original position, allowing the tab assembly 20 to return to its original position.

The elastic conductive layer 33 is made of conductive cloth or conductive foam, and has a fluffy texture, so that the requirements of elastic deformation of the elastic conductive layer 33 and restoration to the original thickness after deformation are met.

And, the metal layer 31 can be set as copper foil, aluminum foil or silver foil and other materials with good conductivity, and the side of the metal layer 31 far away from the elastic conductive layer 33 can be set with a conductive antirust coating, so that on one hand, the metal layer can be prevented from rusting after long-term use, and on the other hand, the friction coefficient can be reduced after the coating is set, so that the relative sliding resistance between the metal layer 31 and other external parts is 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 glue layer 34, and the metal layer 31 completely covers the first glue layer 34, as shown in fig. 5. Due to the larger area of the metal layer 31, the first glue layer 34 is completely inside the orthographic projection of the metal layer 31 in the direction perpendicular to the plane 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.

In addition, on a plane parallel to the metal layer 31: the area of the elastic conductive layer 33 is equal to that of the first glue layer 34, and the elastic conductive layer 33 completely covers the first glue layer 34. That is to say, the elastic conductive layer 33 and the first adhesive layer 34 are adhered at the same position, and the shape and the area of the elastic conductive layer 33 and the first adhesive layer are the same, so that the elastic conductive layer 33 can be adhered to the surface of the object to be adhered more firmly without loosening and without raising the edge. That is, 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. 5, so that a gap 301 can be reserved between the metal layer 31 and the elastic conductive layer 33, and the glue overflowing from the first glue layer 34 can be accommodated at the position of the gap 301.

And, in connection with the above-mentioned embodiment in which the metal layer 31 and the elastic conductive layer 33 are connected by the second glue layer 32, on a plane parallel to the metal layer 31: the area of the metal layer 31 is equal to that of the second adhesive layer 32, and the metal layer 31 completely covers the second adhesive layer 32. After the elastic conductive layer 33 is adhered to the surface of the object to be adhered through the first adhesive layer 34, the metal layer 31 is adhered to the surface of the object to be adhered through the second adhesive layer 32 at the position of the gap 301, and a part of the first adhesive layer 34 which overflows can also participate in the adhesion of the metal layer 31 to the surface of the object to be adhered.

The distance from the edge of the metal layer 31 to the edge of the elastic conductive layer 33 adjacent to the metal layer is not more than 5 mm, and in practice, may be about 1mm, that is, the distance between the edge of the metal layer 31 and the edge of the elastic conductive layer 33 in fig. 5 is about 1mm, and the length of the gap 301 is enough to accommodate the overflowing glue, and the gap 301 is too large to make the connection insecure.

As shown in fig. 2 to 5, the metal layer 31 and the elastic conductive layer 33 are both square, and the length and/or width of the elastic conductive layer 33 is smaller than those of the metal layer 31. And the center point of the elastic conductive layer 33 and the center point of the metal layer 31 are both on a first extension line, and the first extension line is perpendicular to the plane of the metal layer 31.

The metal layer 31 and the elastic conductive layer 33 have the same center position and symmetrical structure, that is, the upper and lower side gaps 301 of the elastic conductive layer 33 have the same width, and the front and rear side gaps 301 have the same width, so that the glue is not easy to overflow from the side with smaller distance to the outer side of the metal layer 31.

The installation of the conductive member 30 is explained below from the perspective of the optical module 100, and there are two embodiments for the installation of the conductive member 30:

in one embodiment, as shown in fig. 2, the elastic conductive layer 33 is adhered to the housing 10 by a first adhesive layer 34, and the tab assembly 20 abuts against the metal layer 31. Specifically, referring to the spatial position of the conductive element 30 in fig. 2 to show the installation manner of the embodiment, the gap 301 in fig. 2 faces the shell 10 and is away from the tab assembly 20 to show that the conductive element 30 is stuck on the shell 10, and the metal layer 31 abuts against the tab assembly 20.

In another embodiment, as shown in fig. 3, the elastic conductive layer 33 is adhered to the tab assembly 20 through the first adhesive layer 34, and the shell 10 abuts against the metal layer 31, specifically, referring to the spatial position of the conductive member 30 in fig. 3 to show the installation manner of the embodiment, the gap 301 in fig. 3 faces the tab assembly 20 and is far away from the shell 10 to show that the conductive member 30 is adhered to the tab assembly 20, and the metal layer 31 abuts against the shell 10.

When the distance between the pull-ring spring 21 and the housing 10 tends to decrease, the elastic conductive layer 33 tends to drive the pull-ring spring 21 to be away from the housing 10, and the elastic conductive layer 33 increases the elasticity of the pull-ring spring 21, so that the pull-ring spring 21 can be in better contact with the conductive spring 201 on the slot cage 200, and the problem of disconnection caused by the fact that the gap between the optical module 100 and the slot cage 200 is too large and the pull-ring spring 21 is not in contact with the conductive spring 201 is avoided.

And, the conductive element 30 is used to make the tab spring 21 protrude outwards from the plane of the side wall 11, that is, when no external pressure is applied, because the conductive element 30 is squeezed between the tab spring 21 and the side wall 11, the tab spring 21 is pushed towards the direction away from the side wall 11 by the conductive element 30 until the end of the tab spring 21 away from the side wall protrudes from the plane of the side wall 11, which may be slightly protruding, so that it is ensured that the tab spring 21 contacts with the conductive spring 201 on the slot cage.

In addition, the conductive element 30 is fixedly connected to the side wall 11 or the tab spring 21, and the conductive element 30 may be connected to the side wall 11 or the tab spring 21 by bonding, welding, or snap-fit connection.

The tab spring 21 is slidably connected in the guide groove 12, and after the housing 10 and the tab assembly 20 are assembled together in the housing structure of the optical module 100, when the tab assembly 20 is pulled, the tab spring 21 can slide back and forth in the guide grooves 12 on both sides of the housing 10. In addition, the optical module 100 can be locked and unlocked through a locking structure on the optical module 100, so that the functions of mounting and dismounting the optical module 100 and the slot cage 200 are realized.

And, the conductive piece 30 is in relatively smooth contact with the side wall 11 or the tab spring 21, so that in the process of sliding the tab assembly 20 back and forth, on one hand, the conductive piece 30 is kept to be always abutted between the side wall 11 and the tab spring 21, and on the other hand, smooth sliding of the tab assembly 20 is ensured. In this embodiment, the metal layer 31 is in contact with the side wall 11 or the tab spring 21, and the metal layer 31 has a smooth surface and low roughness, so that it can be in relatively smooth contact with other components.

Furthermore, the metal layer 31 is square, the width of the tab spring 21 is the same as the width of the metal layer 31, the width of the tab spring 21 and the width of the metal layer 31 are both the thicknesses in the vertical direction, and the leakage of the electromagnetic waves is diffused outwards through the gap between the optical module 100 and the housing 10 from the front to the back, so that the gap can be completely filled by filling in the vertical direction, and the leakage of the electromagnetic waves is avoided.

As shown in fig. 2 or 3, the tab assembly 20 includes tab springs 21 respectively disposed on the left and right sides of the casing 10, and conductive members 30 are disposed between the tab springs 21 on the left side and the casing 10, and between the tab springs 21 on the right side and the casing 10. And a left conductive member 30 and a right conductive member 30 symmetrically disposed at left and right sides of the housing 10.

The conductive parts 30 are symmetrically arranged on the left side and the right side, so that the pull ring elastic sheet 21 on the left side has a leftward movement trend, the pull ring elastic sheet 21 on the right side has a rightward movement trend, on one hand, both sides can be fully filled, and on the other hand, both sides are uniformly stressed.

In addition, generally, due to the requirement of assembly tolerance, a gap is reserved between the optical module 100 and the socket cage 200, so that after the conductive member 30 is directly disposed on the pull-ring assembly 20 and the housing 10, the pull-ring elastic sheet 21 is partially jacked up, and if the conductive member 30 is thinner, the conductive member 30 can be added on the basis of the existing optical module 100 within the range of the gap, as shown in fig. 2.

If the thickness of the conductive piece 30 is thick, a groove body can be arranged on the surface of the side wall 11, and the conductive piece 30 is partially embedded into the groove body, that is, the groove body is further inwards opened on the basis of the guide groove 12, so that the problem that the optical module 100 cannot be inserted into the slot cage 200 to cause interference is avoided.

Compared with the prior art, the embodiment has the following beneficial effects:

this optical module 100 is rational in infrastructure, on the one hand the gap between pull-tab assembly 20 and casing 10 has been filled to conductive piece 30, can prevent that the electromagnetic wave from leaking out from the gap and produce the EMI problem, on the other hand this gap has been filled to conductive piece 30, can make casing 10 and pull-tab assembly 20 better electric contact, and the elasticity of elasticity conducting layer 33 makes pull-tab assembly 20 can support with slot cage 200's electrically conductive shell fragment 201 more closely, the ground connection effect is better, better protection electrostatic discharge's effect has been realized when solving the EMI problem.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. A light module, comprising:

the shell comprises a side wall and a guide groove arranged on the side wall;

2. The optical module of claim 1, wherein the conductive member comprises a metal layer, and the metal layer is electrically connected to the sidewall and the pull tab spring.

3. The optical module of claim 2, wherein the conductive member further comprises an elastic conductive layer and a first glue layer, the metal layer being electrically connected to the elastic conductive layer;

4. The optical module of claim 3, wherein the metal layer is square, and the width of the pull ring spring is the same as the width of the metal layer.

5. The optical module according to claim 3, wherein the elastic conductive layer is provided as a material having a sparse porosity, and a thickness of the elastic conductive layer is reduced when pressure is applied to the surface of the metal layer;

the elastic conducting layer is made of conducting cloth or conducting foam.

6. The optical module of claim 1, wherein the conductive member is configured to protrude the pull ring elastic sheet outward from a plane of the sidewall.

7. The optical module of claim 1, wherein the conductive member is fixedly connected to the sidewall or the pull ring spring, and the pull ring spring is slidably connected to the guide groove.

8. The light module of claim 7, wherein the conductive member is in relatively smooth contact with the sidewall or the pull tab.

9. The optical module of claim 1, wherein the housing includes left and right side walls and the guide grooves disposed on each of the side walls, the pull ring assembly includes pull ring springs disposed on the left and right sides of the housing, and the conductive members are disposed between the left side pull ring spring and the housing and between the right side pull ring spring and the housing.

10. The optical module as claimed in claim 9, wherein the conductive member on the left side and the conductive member on the right side are symmetrically disposed on the left and right sides of the housing.