CN212675229U - Push-type unlocking optical module with good EMI shielding performance - Google Patents
Push-type unlocking optical module with good EMI shielding performance Download PDFInfo
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- CN212675229U CN212675229U CN202022059052.XU CN202022059052U CN212675229U CN 212675229 U CN212675229 U CN 212675229U CN 202022059052 U CN202022059052 U CN 202022059052U CN 212675229 U CN212675229 U CN 212675229U
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- unlocking
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- pull ring
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Abstract
The utility model provides a push-type unlocking optical module with better EMI shielding performance, which uses a base and a groove-shaped upper shell to form a device cavity; the electromagnetic shielding structure comprises a first wave absorbing structure positioned at the base, a second wave absorbing structure between the base and the upper shell, and a third wave absorbing structure which is detachable at the optical port part of the device cavity; the utility model discloses, simple structure has, with low costs, EMI functional, the convenient advantage of equipment dismantlement.
Description
Technical Field
The utility model belongs to the technical field of the optical communication technique and specifically relates to a better formula unblock optical module that bulldozes of EMI shielding performance.
Background
In a new era of 5G communication development, and with the increased demand of the 5G market, the optical communication industry has begun to develop rapidly in this year, and the updating of the optical module is also driven. An optical module of an SFP + packaging series is an important component in a 5G communication network layout, and a 10G/25G optical module packaged by the SFP + is used for transmitting high-frequency signals, and the wavelength of the optical module is smaller than that of a low-speed module, so that electromagnetic signal leakage can occur more easily, and the electromagnetic signal leakage of the module can interfere with the work of adjacent equipment, so that communication equipment manufacturers in the market are luxurious and medium-looking, and EMI (EMI refers to the problem that the work of electronic products can interfere with other peripheral electronic products, and is associated with the EMI specification. Due to the fact that the requirement on the overall dimension of the SFP + package is small, the internal space is very limited, and the electromagnetic shielding problem of 25G high-frequency signals is caused. Many optical module manufacturers on the market design electromagnetic shielding by using conductive and wave-absorbing materials (using conductive glue to block the gaps of the optical module, and using the wave-absorbing material to absorb electromagnetic radiation), so that the material cost of the module and the cost of the assembly process are greatly increased. In order to solve the problem, the utility model provides a simple structure, it is with low costs, EMI performance is good, the convenient optical module structural scheme of assembly and disassembly.
Disclosure of Invention
The utility model provides a better formula unblock optical module that bulldozes of EMI shielding performance has simple structure, and is with low costs, and EMI performance is good, the convenient advantage of equipment dismantlement.
The utility model adopts the following technical scheme.
A push-type unlocking optical module with better EMI shielding performance is characterized in that a base and a groove-shaped upper shell are combined to form a device cavity; the electromagnetic shielding structure comprises a first wave absorbing structure positioned at the base, a second wave absorbing structure between the base and the upper shell and a third wave absorbing structure which is detachable at the optical port part of the device cavity.
The base is made of metal material; the first wave absorbing structure is a sawtooth-shaped wall top at the top of the side wall of the base; the surface of the zigzag wall top is a surface capable of reflecting electromagnetic waves; the zigzag wall top can increase the reflection times of the electromagnetic waves in the device cavity at the base, and the electromagnetic waves are absorbed by forming eddy current loss when being reflected by the base.
And the base is connected with the ground wire of the optical module.
The upper shell is a groove-shaped sheet metal part with elasticity; when the base is combined with the upper shell, the elastic groove wall of the upper shell is wrapped and pressed on the side wall of the base to form a long and narrow deep slit which can increase the reflection times of electromagnetic waves; the long and narrow deep slit is a second wave-absorbing structure, so that the electromagnetic waves can form eddy current loss and be absorbed when being reflected in the long and narrow deep slit.
The optical port component is sleeved at the optical device shaft in the device cavity by a detachable wave absorbing plate; the third wave absorbing structure is a wave absorbing plate; the wave absorbing plate can absorb electromagnetic waves.
The optical module is locked at an optical module mounting position of the external equipment by an elastic sheet; the elastic sheet is connected with an unlocking structure of the optical module;
the unlocking structure of the optical module comprises an unlocking slide block and an unlocking pull ring at the base of the optical module, and the unlocking slide block is arranged at a sliding chute of the base; the unlocking slide block and the base are both provided with semicircular cavities with gear structures, a cylindrical cavity formed by combining the two semicircular cavities is internally provided with a return spring, one end of the return spring is limited by the gear structure in the semicircular cavity, and the other end of the return spring is propped against a gear of the semicircular cavity of the unlocking slide block; the reset spring enables one end face of the unlocking slide block to be attached to the unlocking pull ring through the elasticity of the reset spring and presses the unlocking pull ring to enable the unlocking pull ring to be located at the locking position;
the unlocking pull ring is arranged at the semicircular hole at the base and can rotate around the axis of the circular hole in the semicircular hole; when the unlocking structure of the optical module is unlocked, the unlocking pull ring is pulled to rotate by external force, so that the unlocking pull ring pushes the unlocking slide block to move in the base sliding groove, the elastic sheet used for locking the optical module at the optical module mounting position is jacked up through the wedge-shaped surface of the unlocking slide block, the optical module is unlocked from the optical module mounting position, and the optical module can be pulled out from the optical module mounting position by pulling the unlocking pull ring.
A rotating amplitude locking surface is arranged at the unlocking pull ring; a limiting surface which can be matched with the rotating amplitude locking surface of the unlocking pull ring is arranged on the base; when the unlocking structure of the optical module is used for unlocking, if the rotating amplitude of the unlocking pull ring reaches the maximum value, the limiting surface of the base is pressed on the rotating amplitude locking surface of the unlocking pull ring, so that the unlocking pull ring is prevented from rotating, and the unlocking pull ring is prevented from being damaged due to excessive rotation.
In the scheme, the base (having connected the ground wire) lateral wall design is the sawtooth surface, and the electromagnetic wave is the repeated reflection between near base sawtooth surface, and this in-process, the electromagnetic wave forms the eddy current loss in the base repeatedly, can reduce the electromagnetic wave greatly and leak.
In the scheme, the metal plate process structure is used to the epitheca, can design its shape according to the base lateral wall, comes the lateral wall of parcel base better to great increase the degree of depth in gap between base lateral wall and the epitheca, thereby can reduce the electromagnetic wave better and leak.
The utility model discloses design detachable at light mouthful department and inhale the wave plate, can utilize the wave absorption characteristic of inhaling the wave plate to reduce the electromagnetic wave and reveal from the light mouthful, inhale the wave plate moreover and can directly assemble, it is very convenient.
The utility model discloses in to the fool-proof structure of unblock pull ring and base prevents that the unblock pull ring from damaging because of excessive rotation, need not additionally increase spacing part, reduce cost.
Drawings
The invention will be described in further detail with reference to the following drawings and detailed description:
FIG. 1 is an exploded view of the present invention;
fig. 2 is a schematic view of a base of the present invention;
FIG. 3 is a schematic view of the upper housing in combination with the base;
fig. 4 is a partial schematic view of the optical module of the present invention with the upper case removed;
FIG. 5 is a schematic diagram of the matching of a rotating amplitude locking surface of the unlocking pull ring and a limiting surface of the base;
FIG. 6 is an enlarged schematic view of a rotating amplitude locking surface of the unlocking pull ring and a limiting surface of the base;
in the figure: 1-a base; 2-upper shell; 3-waistcoat; 4-unlocking the slide block; 5-unlocking the pull ring; 6-optical device blocking sheet; 7-a wave absorbing plate; 8-a light receiving device; 9-light emitting devices; 10-a rigid circuit board; 11-a set screw; 12-an emitting light device flexplate; 13-a light receiving device flexplate; 14-a return spring;
100-a first wave-absorbing structure; 101-a second wave-absorbing structure; 102-unlocking the wedge-shaped surface of the slider; 103-external devices; 104-optical module mounting location; 105-a spring plate; 105-a web locking surface; 106-a limiting surface; 107-device chamber.
Detailed Description
As shown in the figure, a push-type unlocking optical module with better EMI shielding performance is formed by combining a base 1 and a groove-shaped upper shell 2 into a device cavity 107; the electromagnetic shielding structure comprises a first wave absorbing structure 100 positioned at the base, a second wave absorbing structure 101 positioned between the base and the upper shell, and a third wave absorbing structure which is detachable at the optical port part of the device cavity.
The base is made of metal material; the first wave absorbing structure is a sawtooth-shaped wall top at the top of the side wall of the base; the surface of the zigzag wall top is a surface capable of reflecting electromagnetic waves; the zigzag wall top can increase the reflection times of the electromagnetic waves in the device cavity at the base, and the electromagnetic waves are absorbed by forming eddy current loss when being reflected by the base.
And the base is connected with the ground wire of the optical module.
The upper shell is a groove-shaped sheet metal part with elasticity; when the base is combined with the upper shell, the elastic groove wall of the upper shell is wrapped and pressed on the side wall of the base to form a long and narrow deep slit which can increase the reflection times of electromagnetic waves; the long and narrow deep slit is a second wave-absorbing structure, so that the electromagnetic waves can form eddy current loss and be absorbed when being reflected in the long and narrow deep slit.
The optical port component is sleeved at the optical device shaft in the device cavity by a detachable wave absorbing plate; the third wave absorbing structure is a wave absorbing plate 7; the wave absorbing plate can absorb electromagnetic waves.
The optical module is locked at an optical module mounting position 104 of the external device 103 by an elastic sheet 105; the elastic sheet is connected with an unlocking structure of the optical module;
the unlocking structure of the optical module comprises an unlocking slide block 4 and an unlocking pull ring 5 which are arranged on a base of the optical module, and the unlocking slide block is arranged on a sliding groove of the base; the unlocking slide block and the base are both provided with semicircular cavities with gear structures, a cylindrical cavity formed by combining the two semicircular cavities is internally provided with a return spring 14, one end of the return spring is limited by the gear structure in the semicircular cavity, and the other end of the return spring is propped against a gear of the semicircular cavity of the unlocking slide block; the reset spring enables one end face of the unlocking slide block to be attached to the unlocking pull ring through the elasticity of the reset spring and presses the unlocking pull ring to enable the unlocking pull ring to be located at the locking position;
the unlocking pull ring is arranged at the semicircular hole at the base and can rotate around the axis of the circular hole in the semicircular hole; when the unlocking structure of the optical module is unlocked, the unlocking pull ring is pulled to rotate by external force, so that the unlocking pull ring pushes the unlocking slide block to move in the base sliding groove, the elastic sheet used for locking the optical module at the optical module mounting position is jacked up through the wedge-shaped surface of the unlocking slide block, the optical module is unlocked from the optical module mounting position, and the optical module can be pulled out from the optical module mounting position by pulling the unlocking pull ring.
A rotating amplitude locking surface 105 is arranged at the unlocking pull ring; a limiting surface 106 which can be matched with a rotating amplitude locking surface of the unlocking pull ring is arranged at the base; when the unlocking structure of the optical module is used for unlocking, if the rotating amplitude of the unlocking pull ring reaches the maximum value, the limiting surface of the base is pressed on the rotating amplitude locking surface of the unlocking pull ring, so that the unlocking pull ring is prevented from rotating, and the unlocking pull ring is prevented from being damaged due to excessive rotation.
Claims (7)
1. The utility model provides a better formula of bulldozing unblock optical module of EMI shielding performance which characterized in that: the optical module is combined by a base and a groove-shaped upper shell into a device cavity; the electromagnetic shielding structure comprises a first wave absorbing structure positioned at the base, a second wave absorbing structure between the base and the upper shell and a third wave absorbing structure which is detachable at the optical port part of the device cavity.
2. The push-type unlocking optical module with better EMI shielding performance according to claim 1, characterized in that: the base is made of metal material; the first wave absorbing structure is a sawtooth-shaped wall top at the top of the side wall of the base; the surface of the zigzag wall top is a surface capable of reflecting electromagnetic waves; the zigzag wall top can increase the reflection times of the electromagnetic waves in the device cavity at the base, and the electromagnetic waves are absorbed by forming eddy current loss when being reflected by the base.
3. The push-type unlocking optical module with better EMI shielding performance as claimed in claim 2, wherein: and the base is connected with the ground wire of the optical module.
4. The push-type unlocking optical module with better EMI shielding performance according to claim 1, characterized in that: the upper shell is a groove-shaped sheet metal part with elasticity; when the base is combined with the upper shell, the elastic groove wall of the upper shell is wrapped and pressed on the side wall of the base to form a long and narrow deep slit which can increase the reflection times of electromagnetic waves; the long and narrow deep slit is a second wave-absorbing structure, so that the electromagnetic waves can form eddy current loss and be absorbed when being reflected in the long and narrow deep slit.
5. The push-type unlocking optical module with better EMI shielding performance according to claim 1, characterized in that: the optical port component is sleeved at the optical device shaft in the device cavity by a detachable wave absorbing plate; the third wave absorbing structure is a wave absorbing plate; the wave absorbing plate can absorb electromagnetic waves.
6. The push-type unlocking optical module with better EMI shielding performance according to claim 1, characterized in that: the optical module is locked at an optical module mounting position of the external equipment by an elastic sheet; the elastic sheet is connected with an unlocking structure of the optical module;
the unlocking structure of the optical module comprises an unlocking slide block and an unlocking pull ring at the base of the optical module, and the unlocking slide block is arranged at a sliding chute of the base; the unlocking slide block and the base are both provided with semicircular cavities with gear structures, a cylindrical cavity formed by combining the two semicircular cavities is internally provided with a return spring, one end of the return spring is limited by the gear structure in the semicircular cavity, and the other end of the return spring is propped against a gear of the semicircular cavity of the unlocking slide block; the reset spring enables one end face of the unlocking slide block to be attached to the unlocking pull ring through the elasticity of the reset spring and presses the unlocking pull ring to enable the unlocking pull ring to be located at the locking position;
the unlocking pull ring is arranged at the semicircular hole at the base and can rotate around the axis of the circular hole in the semicircular hole; when the unlocking structure of the optical module is unlocked, the unlocking pull ring is pulled to rotate by external force, so that the unlocking pull ring pushes the unlocking slide block to move in the base sliding groove, the elastic sheet used for locking the optical module at the optical module mounting position is jacked up through the wedge-shaped surface of the unlocking slide block, the optical module is unlocked from the optical module mounting position, and the optical module can be pulled out from the optical module mounting position by pulling the unlocking pull ring.
7. The push-type unlocking optical module with better EMI shielding performance as claimed in claim 6, wherein: a rotating amplitude locking surface is arranged at the unlocking pull ring; a limiting surface which can be matched with the rotating amplitude locking surface of the unlocking pull ring is arranged on the base; when the unlocking structure of the optical module is used for unlocking, if the rotating amplitude of the unlocking pull ring reaches the maximum value, the limiting surface of the base is pressed on the rotating amplitude locking surface of the unlocking pull ring, so that the unlocking pull ring is prevented from rotating, and the unlocking pull ring is prevented from being damaged due to excessive rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022059052.XU CN212675229U (en) | 2020-09-18 | 2020-09-18 | Push-type unlocking optical module with good EMI shielding performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022059052.XU CN212675229U (en) | 2020-09-18 | 2020-09-18 | Push-type unlocking optical module with good EMI shielding performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212675229U true CN212675229U (en) | 2021-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022059052.XU Active CN212675229U (en) | 2020-09-18 | 2020-09-18 | Push-type unlocking optical module with good EMI shielding performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212675229U (en) |
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2020
- 2020-09-18 CN CN202022059052.XU patent/CN212675229U/en active Active
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