Adjustable EMI spring and optical module

Abstract

This invention discloses an adjustable EMI spring and an optical module, comprising: a first connecting part and a second connecting part, the first connecting part and the second connecting part being U-shaped, and the ends of the first connecting part and the second connecting part being provided with integrally formed snap-fit ​​parts; a telescopic part, integrally connected to the first connecting part and the second connecting part, the telescopic part being hollow and curved; and a driving component, connected to the first connecting part and the second connecting part, wherein when the first connecting part and the second connecting part are driven to move closer together, the telescopic part arches outward; and when the first connecting part and the second connecting part are driven to move away from each other, the telescopic part sinks inward. This invention achieves adjustable performance of the EMI spring, can maintain a tighter fit with the cage, does not affect the performance of reducing electromagnetic interference, and can solve the problem of difficulty in inserting and removing the optical module due to unqualified cage size.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical modules, and in particular to an adjustable EMI spring plate and an optical module. BACKGROUND

[0002] An optical module is an optoelectronic device for converting photoelectricity and electricity. The sending end of the optical module converts an electrical signal into an optical signal, and the receiving end converts an optical signal into an electrical signal. When the optical module is used, it is inserted into a cage. In order to reduce electromagnetic interference, the optical module is usually provided with an EMI spring plate. The EMI spring plate keeps the optical module in good contact with the cage. However, during the cooperation process, the EMI spring plate may be fixed in structure, and the cooperation between the optical module and the cage may be too large or too small, resulting in unqualified EMI test, or unqualified size of the cage, which makes the process of inserting or pulling out the optical module from the cage difficult. SUMMARY

[0003] The main purpose of the present application is to provide an adjustable EMI spring plate and an optical module, which aims to solve the technical problem of limited cooperation between the existing optical module and the cage.

[0004] To achieve the above purpose, the present application provides an adjustable EMI spring plate, comprising:

[0005] A first connecting part and a second connecting part, the first connecting part and the second connecting part are in the shape of "U", the first connecting part and the second connecting part are provided with an extension part at the end, the extension part is provided with an integrally formed clamping part, the first connecting part and the second connecting part are integrally formed with the clamping part and the extension part connected thereto;

[0006] A telescopic part integrally connected with the first connecting part and the second connecting part, the telescopic part is in the shape of a hollow curve;

[0007] A driving assembly connected with the first connecting part and the second connecting part, when the first connecting part and the second connecting part are driven to approach each other, the telescopic part arches outwardly; when the first connecting part and the second connecting part are driven to move away from each other, the telescopic part sinks inwardly.

[0008] Further, the driving assembly comprises four coil sleeves, each coil sleeve is connected with one end of the connecting soft belt at the corresponding position, and the other end of the connecting soft belt of the coil sleeve on the same side of the first connecting part and the second connecting part is electrically connected with the same PCB.

[0009] The clamping part on the first connecting part and the second connecting part is provided with a pin connected with the coil sleeve, and the pin is integrally formed with the clamping part;

[0010] The pin is equivalent to a coil core in a powered coil sleeve, and different directions of current are connected, different directions of magnetic field are generated between the pins on the same side, the magnetic field forces repel each other, and the pins are pushed to expand to both sides; the same direction of current is connected, the same direction of magnetic field is generated between the pins on the same side, the magnetic field forces attract each other, and the pins are pushed to move inward.

[0011] Further, the driving assembly further comprises two electromagnetic sheets arranged in the inner side of the bending positions of the first connecting part and the second connecting part on the same side, and the two electromagnetic sheets are electrically connected with the PCB on the same side, and the magnetic attraction force is generated after being powered to limit the movement of the first connecting part and the second connecting part.

[0012] Further, the driving assembly comprises a first rod and a second rod connected with both ends of the first connecting part and both ends of the second connecting part, the first rod and the second rod are moved to approach each other, the telescopic part is driven to arch outward, and the first rod and the second rod are moved to move away from each other, the telescopic part is driven to sink inward.

[0013] A rotatable clamping plate is arranged on the second rod, and clamping grooves are uniformly arranged on the clamping plate, the clamping grooves on the clamping plate are contacted with the first rod by rotating the clamping plate, and the movement of the first connecting part and the second connecting part is limited.

[0014] Further, the driving assembly further comprises a first rod comprising a first rod piece and a second rod piece, one end of the second rod piece is threadedly connected with the first rod piece, and the other end of the second rod piece is movably connected with a third rod piece, the first rod piece and the third rod piece are connected with both ends of the first connecting part or the second connecting part, and a spring connected with the second rod piece is arranged in the inner cavity of the first rod piece.

[0015] The first rod and the second rod are the same in structure.

[0016] Further, a limiting piece is arranged between the first connecting part and the second connecting part on the same side, the limiting piece comprises a cross rod, the cross rod is connected with the first connecting part and the second connecting part at both ends respectively, and both ends of the cross rod are elastically stretchable structures, a stop block is arranged in the middle of the cross rod, and the stop block is located between the two pins on the same side.

[0017] Further, the first rod piece and the third rod piece are connected with the clamping parts on the corresponding positions of the first connecting part or the second connecting part, and the first rod piece and the third rod piece are detachably connected.

[0018] Further, the telescopic part is connected with the first connecting part and the second connecting part through a rotating shaft respectively, a rotating shaft independently rotating is arranged on each side of the first connecting part and the second connecting part, and a missing slot adapted to the telescopic part is arranged on each side of the first connecting part and the second connecting part.

[0019] An optical module comprises a base, a PCB, an upper cover, an electrical device, a cage, and an adjustable EM I spring sheet as described above, wherein the base is provided with a groove matched with the adjustable EM I spring sheet;

[0020] The adjustable EM I spring sheet is expanded and attached to the cage to be far away, and the adjustable EM I spring sheet is contracted and attached to the cage to be close.

[0021] The present application has the following advantages:

[0022] In the present application, when the first connecting part and the second connecting part are driven to approach each other, the telescopic part is arched outward, so that the EM I spring sheet is attached to the cage to be close, and when the first connecting part and the second connecting part are driven to be far away from each other, the telescopic part is sunken inward, so that the EM I spring sheet is attached to the cage to be far away, realizing the adjustable performance of the EM I spring sheet, keeping the cooperation with the cage more close, not affecting the performance of reducing electromagnetic interference, and being able to cope with the problem of difficult plugging of the optical module caused by unqualified size of the cage. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The present application is a structural schematic diagram;

[0024] Figure 2 The present application is an EM I spring sheet and a driving assembly structure connection schematic diagram of one embodiment;

[0025] Figure 3 The present application is a pin distribution structure schematic diagram;

[0026] Figure 4 The present application is an EM I spring sheet adjustment state schematic diagram;

[0027] Figure 5 The present application is a pin mutual repulsion equivalent circuit schematic diagram of one embodiment;

[0028] Figure 6 The present application is a pin mutual attraction equivalent circuit schematic diagram of one embodiment;

[0029] Figure 7 The present application is an electromagnetic sheet structure installation schematic diagram;

[0030] Figure 8 The present application is an EM I spring sheet and a driving assembly structure connection schematic diagram of another embodiment;

[0031] Figure 9 The present application is a first rod structure schematic diagram;

[0032] Figure 10 The present application is a limiting piece structure schematic diagram;

[0033] Figure 11 Fig. 1 is a schematic diagram of the optical module structure of the present application;

[0034] Figure 12 Fig. 4 is a schematic diagram of the connection between the optical module and the cage of the present application.

[0035] Legend of reference signs:

[0036] 100, first connecting part; 101, second connecting part; 102, telescopic part; 103, clamping part; 104, pin; 105, extension part; 200, coil sleeve; 201, connecting soft belt; 202, PCB; 203, electromagnetic sheet; 300, first rod; 3001, first rod member; 3002, second rod member; 3003, third rod member; 3004, spring; 301, second rod; 302, clamping plate; 400, base; 401, groove; 500, cross rod; 501, stop block; 600, cage; 700, upper cover; 800, PCB board. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0038] It should be noted that if the embodiments of the present application involve directionality indications (such as up, down, left, right, front, back, etc.), the directionality indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directionality indications also change accordingly.

[0039] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B schemes. In addition, "multiple" means two or more. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist.

[0040] Referring to Figure 1 and 2 , the present application is an adjustable EM I spring, comprising:

[0041] The first connecting part 100 and the second connecting part 101 are in the shape of "U", and the first connecting part 100 and the second connecting part 101 are provided with an extension part 105 at the end, and the extension part 105 is provided with an integrally formed clamping part 103, and the first connecting part 100 and the second connecting part 101 are integrally formed with the clamping part 103 and the extension part 105 connected thereto;

[0042] The telescopic part 102 is integrally connected with the first connecting part 100 and the second connecting part 101, and the telescopic part 102 is in the shape of a hollow curve; the telescopic part 102 is made of stainless steel material and has a thin sheet structure with bendable performance;

[0043] The driving assembly is connected with the first connecting part 100 and the second connecting part 101, and drives the first connecting part 100 and the second connecting part 101 to move closer to each other, and the telescopic part 102 arches outward; and drives the first connecting part 100 and the second connecting part 101 to move away from each other, and the telescopic part 102 sinks inward.

[0044] By driving the telescopic part 102 to expand and contract through the driving assembly, the telescopic part 102 arches outward, so that the EM I spring is closely attached to the cage, and the telescopic part 102 sinks inward, so that the EM I spring is distantly attached to the cage, realizing the adjustable performance of the EM I spring, keeping the closer cooperation with the cage, not affecting the performance of reducing electromagnetic interference, and being able to cope with the problem of difficult plugging of the optical module caused by unqualified cage size.

[0045] In an embodiment, referring to Figure 2 and Figure 3 , the driving assembly includes four coil sleeves 200, each of which is connected with one end of the connecting soft belt 201 at the corresponding position, and the other end of the connecting soft belt 201 of the coil sleeve 200 on the same side first connecting part 100 and the second connecting part 101 is electrically connected with the same PCB 202;

[0046] The clamping part 103 on the first connecting part 100 and the second connecting part 101 is provided with a pin 104 connected with the coil sleeve 200, and the pin 104 is integrally formed with the clamping part 103;

[0047] Referring to Figure 4 , Figure 5 and Figure 6, the pin 104 in the energized coil sleeve 200 is equivalent to the coil core, access to different direction of current, the same side of the pin 104 between the different direction of the magnetic field, magnetic field force repel each other, push the pin 104 to both sides of the spread; access to the same direction of current, the same side of the pin 104 between the same direction of the magnetic field, magnetic field force attract each other, push the pin 104 to the inside of the close.

[0048] In an embodiment, please refer to Figure 7 , the drive assembly further comprises two electromagnetic sheet 203, respectively in the same side of the first connecting part 100 and the second connecting part 101 bending part inside, two electromagnetic sheet 203 with the same side of the PCB 202 electrically connected, energized after the first connecting part 100 and the second connecting part 101 produce magnetic attraction force limit movement.

[0049] Thus arranged, after the completion of the adjustment of the telescopic part 102, the electromagnetic sheet 203 energized, the first connecting part 100 and the second connecting part 101 produce magnetic attraction force, limit the current adjustment position, avoid the need to repeat the adjustment problem, so that the EMI spring in the adjustment process, has smaller resistance, improve the smoothness in the process of adjustment, and after the adjustment is completed, the EMI spring produces adsorption force limit movement.

[0050] Electromagnetic sheet 203 and the same side of the coil sleeve 200 share PCB, only need to draw out a power supply line alone, reduce the cost, simple and fast operation.

[0051] In an embodiment, please refer to Figure 8 , the drive assembly comprises the first connecting part 100 both ends and the second connecting part 101 both ends of the first rod 300 and the second rod 301, the first rod 300 and the second rod 301 move close to each other, drive telescopic part 102 arch outward, the first rod 300 and the second rod 301 move away from each other, drive telescopic part 102 to the inside of the subsidence;

[0052] By hand holding the first rod 300 and the second rod 301, change the distance between the first rod 300 and the second rod 301, so as to drive the telescopic part 102 corresponding to the expansion, the first connecting part 100 and the second connecting part 101 corresponding to the movement, realize the purpose of EMI spring adjustable, through the mechanical way to participate in the adjustment, avoid the instability problem and safety problem caused by the power, and the installation is simple and convenient.

[0053] The second rod 301 is sleeved with a rotatable clamping plate 302, and the clamping plate 302 is uniformly provided with clamping grooves. Rotating the clamping plate 302 makes the clamping grooves on the clamping plate 302 contact with the first rod 300, thereby limiting the movement of the first connecting part 100 and the second connecting part 101. In this way, after the telescopic part 102 is adjusted, the clamping plate 302 is rotated to make the corresponding clamping grooves on the clamping plate 302 clamped with the second rod 301, thereby limiting the position of the first connecting part 100 and the second connecting part 101, and avoiding the problem that the telescopic part 102 moves randomly after adjustment.

[0054] In an embodiment, referring to Figure 9 , the driving assembly further comprises a first rod 300 including a first rod member 3001 and a second rod member 3002. One end of the second rod member 3002 is threadedly connected with the first rod member 3001, and the other end of the second rod member 3002 is movably connected with a third rod member 3003. The first rod member 3001 and the third rod member 3003 are connected with the first connecting part 100 or the second connecting part 101 at two ends thereof. The first rod member 3001 is provided with a spring 3004 connected with the second rod member 3002 in an inner cavity thereof.

[0055] When the first rod 300 and the second rod 301 adjust the telescopic part 102, the second rod member 3002 is rotated to make the connection between the second rod member 3002 and the first rod member 3001 loose, so that the distance between the two ends of the first connecting part 100 and the second connecting part 101 is slightly increased, the tightening force of the EM I spring is changed, the resistance when the first connecting part 100 and the second connecting part 101 move is reduced, and then the subsequent pulling adjustment of the telescopic part 102 is facilitated. After adjustment is completed, the second rod member 3002 is screwed back.

[0056] The first rod 300 and the second rod 301 are of the same structure.

[0057] In an embodiment, referring to Figure 10 , a limiting piece is arranged between the first connecting part 100 and the second connecting part 101 on the same side. The limiting piece includes a cross rod 500, and the two ends of the cross rod 500 are connected with the first connecting part 100 and the second connecting part 101 respectively. The two ends of the cross rod 500 are of an elastic and telescopic structure, and the cross rod 500 is provided with a stop block 501 in the middle thereof. The stop block 501 is located between the two pins 104 on the same side. The stop block 501 limits the maximum closing distance of the first connecting part 100 and the second connecting part 101, thereby avoiding the problem that the telescopic part 102 is bent too much and cannot rebound due to over-adjustment. The elastic and telescopic structure of the two ends of the cross rod 500 facilitates the normal movement of the first connecting part 100 and the second connecting part 101 during adjustment.

[0058] In an embodiment, the first rod 3001 and the third rod 3003 are connected with the clamping part 103 on the corresponding position of the first connecting part 100 or the second connecting part 101, and the two are detachably connected. In this way, the installation and disassembly of the first rod 300 and the second rod 301 are facilitated. Specifically, threaded holes are formed on the clamping part 103, and the two are connected through threads.

[0059] In an embodiment, the telescopic part 102 is connected with the first connecting part 100 and the second connecting part 101 through a rotating shaft. Each edge of the first connecting part 100 and the second connecting part 101 is provided with an independently rotating rotating shaft, and each edge of the first connecting part 100 and the second connecting part 101 is provided with a slot adapted to the telescopic part 102. The first connecting part 100 and the second connecting part 101 are connected with the telescopic part 102 through the rotating shaft, so that the telescopic part 102 will not cause deformation of the connection between the first connecting part 100 and the second connecting part 101 when adjusting, which may cause the EMI spring to not tightly fit the electronic device over a long period of time, and the relatively independent structure of the two can also improve the smoothness of the adjustment process.

[0060] A light module, please refer to Figure 11 and Figure 12 , comprising a base 400, a PCB board 800, an upper cover 700, an electronic device and a cage 600, further comprising an adjustable EMI spring as in the above embodiment, and the base 400 is provided with a groove 401 matched with the adjustable EMI spring;

[0061] The adjustable EMI spring is expanded and fits the cage 600 to be far away, and the adjustable EMI spring is contracted and fits the cage 600 to be close.

[0062] The telescopic part is driven to expand and contract by the driving assembly, and when the first connecting part 100 and the second connecting part 101 are driven to approach each other, the telescopic part 102 arches outward, so that the EMI spring fits the cage 600 to be close, and when the first connecting part 100 and the second connecting part 101 are driven to move away from each other, the telescopic part 102 sinks inward, so that the EMI spring fits the cage 600 to be far away, realizing the adjustable performance of the EMI spring, keeping the cooperation with the cage 600 more closely, not affecting the performance of reducing electromagnetic interference, and being able to cope with the problem of difficult plugging of the light module caused by the unqualified size of the cage 600.

[0063] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An adjustable EMI spring, characterized in that... , comprising: A first connecting part (100) and a second connecting part (101), the first connecting part (100) and the second connecting part (101) are "U" shaped, the first connecting part (100) and the second connecting part (101) are provided with an extension (105) at the end, the extension (105) is provided with an integral clamping part (103), the first connecting part (100) and the second connecting part (101) are integrally formed with the clamping part (103) and the extension (105) connected thereto; A telescopic part (102) is integrally connected with the first connecting part (100) and the second connecting part (101), and the telescopic part (102) is in a hollow curved shape; A driving assembly is connected with the first connecting part (100) and the second connecting part (101), and drives the first connecting part (100) and the second connecting part (101) to move closer to each other, so that the telescopic part (102) arches outward; when the first connecting part (100) and the second connecting part (101) are driven to move away from each other, the telescopic part (102) sinks inward; The driving assembly includes four coil sleeves (200), each of the coil sleeves (200) is connected with one end of a connecting soft belt (201) at a corresponding position, and the other end of the connecting soft belt (201) of the coil sleeve (200) on the same side of the first connecting part (100) and the second connecting part (101) is electrically connected with the same PCB (202); The clamping part (103) on the first connecting part (100) and the second connecting part (101) is provided with a pin (104) connected with the coil sleeve (200), and the pin (104) is integrally formed with the clamping part (103); The pin (104) is equivalent to a coil core in the energized coil sleeve (200), and different direction currents are input, different direction magnetic fields are generated between the pins (104) on the same side, the magnetic field forces repel each other, and the pins (104) are pushed to expand to both sides; the same direction currents are input, the same direction magnetic fields are generated between the pins (104) on the same side, the magnetic field forces attract each other, and the pins (104) are pushed to move closer to each other; The driving assembly further includes two electromagnetic sheets (203) arranged on the inner sides of the curved parts of the first connecting part (100) and the second connecting part (101) on the same side, the two electromagnetic sheets (203) are electrically connected with the PCB (202) on the same side, and the magnetic attraction force generated after energization limits the movement of the first connecting part (100) and the second connecting part (101).

2. The tunable EMI gasket of claim 1, wherein: The driving assembly includes a first rod (300) and a second rod (301) connected with both ends of the first connecting part (100) and both ends of the second connecting part (101), moving the first rod (300) and the second rod (301) closer to each other drives the telescopic part (102) to arch outward, and moving the first rod (300) and the second rod (301) away from each other drives the telescopic part (102) to sink inward; The second rod (301) is sleeved with a rotatable clamping plate (302), and the clamping plate (302) is uniformly provided with clamping grooves.

3. An adjustable EMI gasket as defined in claim 2, wherein: The driving assembly further comprises a first rod (300) comprising a first rod member (3001) and a second rod member (3002), one end of the second rod member (3002) is threadedly connected with the first rod member (3001), and the other end of the second rod member (3002) is movably connected with a third rod member (3003), the first rod member (3001) and the third rod member (3003) are connected with two ends of the first connecting part (100) or the second connecting part (101), and the inner cavity of the first rod member (3001) is provided with a spring (3004) connected with the second rod member (3002). The first rod (300) and the second rod (301) are of the same structure.

4. The adjustable EMI gasket of claim 2, wherein: A limiting piece is arranged between the first connecting part (100) and the second connecting part (101) on the same side, the limiting piece comprises a cross rod (500), two ends of the cross rod (500) are respectively connected with the first connecting part (100) and the second connecting part (101), and the two ends of the cross rod (500) are of an elastic telescopic structure, a stop block (501) is arranged in the middle of the cross rod (500), and the stop block (501) is located between the two pins (104) on the same side.

5. The adjustable EMI gasket of claim 3, wherein: The first rod member (3001) and the third rod member (3003) are connected with the clamping part (103) on the corresponding position of the first connecting part (100) or the second connecting part (101), and the two are detachably connected.

6. The adjustable EMI gasket of claim 1, wherein: The telescopic part (102) is connected with the first connecting part (100) and the second connecting part (101) through a rotating shaft, each side of the first connecting part (100) and the second connecting part (101) is provided with an independently rotating rotating shaft, and each side of the first connecting part (100) and the second connecting part (101) is provided with a missing slot matched with the telescopic part (102).

7. An optical module comprising a base (400), a PCB board (800), an upper cover (700), an electrical device and a cage (600), characterized in that: The adjustable EMI spring further comprises a base (400) provided with a groove (401) matched with the adjustable EMI spring. The adjustable EMI spring is expanded, and is close to or away from the cage (600); the adjustable EMI spring is contracted, and is close to or away from the cage (600).

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