CN101291175B

CN101291175B - Minimized optical transceiver capable of hot-plug

Info

Publication number: CN101291175B
Application number: CN2008100255293A
Authority: CN
Inventors: 杜程
Original assignee: WUXI ZHONGXING OPTOELECTRONICS TECHNOLOGY Co Ltd
Current assignee: Wuxi dekeli Optoelectronic Technology Co.,Ltd.
Priority date: 2008-04-29
Filing date: 2008-04-29
Publication date: 2011-08-17
Anticipated expiration: 2028-04-29
Also published as: CN101291175A

Abstract

The invention relates to an optical transceiver, in particular to a miniaturized hot-swappable optical transceiver. The structure comprises a base and an eccentric shaft handle which are connected to each other according to the technical proposal of the invention. The invention is characterized in that the lower end of the eccentric shaft handle is provided with a rotating shaft which is hinged with the lower side of the right end of the base and is provided with an eccentric shaft; the bottom of the base near the side of the rotating shaft is provided with a reset warping plate the middle part of which is hinged with the base through a pin shaft and the right end of which is provided with a reset drive surface matched with the eccentric shaft, a structure for placing a reset spring is arranged between the reset drive surface and the pin shaft, both ends of the reset spring are respectively in contact with the reset warping plate and the base; and the pin shaft is parallel to the rotating shaft and the eccentric shaft. The optical transceiver has the advantages of compact structure and reliable operation.

Description

Miniaturization hot swappable optical module structure integrated with sending and receiving

Technical field

The present invention relates to a kind of integrated module of light transmitting-receiving, specifically a kind of miniaturization hot swappable optical module structure integrated with sending and receiving.

Background technology

SFP is miniaturization, the hot swappable integrated module of optical transceiver, and its basic function is to realize the photosignal conversion in the signal transmission.Be mainly used in following several aspect, i.e. systems such as Synchronous Optical Network (SONET) and SDH (Synchronous Digital Hierarchy) (SDH), ATM(Asynchronous Transfer Mode), fiber distributed data interface (FDDI), optical-fibre channel, Fast Ethernet and Gigabit Ethernet.

The SFP Products Development relates generally to photoelectricity partial design and electronic product structural design.At the dimensional structure that mainly contains circuit part aspect the electronic product structural design, mounting means and mechanical cover structure division.Consider the compatibility of product, some well-known manufacturers have joined together to work out the polynary agreement (MSA) of miniaturization optical transceiver module.This agreement comprises the interface definition of functional circuit and mechanical structure.This Products Development must be based on this agreement, to guarantee the versatility of product.

The SFP basic structural components is, pedestal, and radome, handle, etc.Wherein the Partial Feature of pedestal handle is formed lock-bit and release mechanism.Because the SFP module adopts hot plug technology, so the structural design of module must adopt lock-bit and release design, to guarantee the reliably working of module in the hot plug process.The design of this resetting device in recent years is more and more diversified, but is divided into following several generally: 1, the mode of stipulating in the MSA agreement.2, a kind of resetting device of U.S. Finisar company design.3, a kind of mechanism that adds the steel wire shaping handle that is similar to Finisar company for the pushing block in the MSA agreement.

More than several modes can both reach the function of lock-bit and release.But some restricted factors have all appearred in the use of product.First kind of mode is eliminated gradually owing to not possessing auto-reset function.The second way is because the lock-bit piece is a movable part, and the employing shell fragment that resets.The anti-fatigue ability of this shell fragment is more weak, therefore in case occur often occurring after the fatigue can't lock-bit situation.The third mode work is reliable, but the height dimension of this mechanism is relatively large, in some unconventional uses, the situation that can't plug occurred.

Summary of the invention

The objective of the invention is to design on the basis of the advantage of several resetting devices more than absorbing that a kind of size is less, the miniaturization hot swappable optical module structure integrated with sending and receiving of reliable operation.

According to technical scheme provided by the invention, described modular structure comprises interconnective pedestal and eccentric shaft handle, it is characterized in that: there is rotating shaft the lower end of eccentric shaft handle, and utilizes the end downside of this rotating shaft and pedestal right-hand member to be hinged, and eccentric shaft is set on rotating shaft simultaneously; In the bottom of pedestal near a side setting of the rotating shaft seesaw that resets, the middle part of this seesaw that resets utilizes bearing pin and pedestal hinged, the reset drives face that right-hand member setting can cooperate with eccentric shaft, be provided for placing the structure of back-moving spring between reset drives face and bearing pin, the two ends of described back-moving spring contact with reset seesaw and pedestal respectively; Described bearing pin is parallel with rotating shaft and eccentric shaft.

Be provided for holding the space of seesaw of resetting in the bottom of pedestal corresponding to the position of the seesaw that resets, on the seesaw that resets, be provided for locating the location hole of an end of back-moving spring, be provided for locating the positioning pit of the other end of back-moving spring at the corresponding position of pedestal.Right side, bottom at pedestal is provided with pressing plate, and described rotating shaft is between pressing plate and pedestal.

Described reset drives face is a curved surface, when resetting the eccentric shaft handle, this curved surface is pressed on the eccentric shaft, and the power that back-moving spring is put on the seesaw that resets passes to eccentric shaft, eccentric shaft is rotated counterclockwise around rotating shaft, drive the eccentric shaft handle and rotate counterclockwise and reset around rotating shaft.In pedestal, be provided for holding the cavity of optics, and be used to locate the positioning cards of optics.On pedestal, be provided for shielding the radome of optics.

Compared with prior art, the application in the characteristics of configuration aspects is: 1, restoring lever mechanism, and this mechanism compares with existing push-pull mechanism, has to reset reliably, accurately; Avoid mechanism to occur unsure state in the course of the work.Height dimension to system's sensitivity is smaller, compatible relatively good to system.2, eccentric shaft handle, owing to adopted die cast, the problem on deformation of having avoided steel wire shaping spare in use to occur is improved the work consistency of mechanism.3, reset seesaw and fitting surface thereof are because this curved surface be the move contrail fitting curved surface of strictness.Therefore the release and the reseting procedure of entire mechanism are able to accurate control.Characteristics in function aspects are: 1, realized reliable lock-bit and the release of SFP in system, and resetting device can automatically reset accurately.2, resetting device reliable operation in given stroke range has been avoided the appearance of unexpected labile state.3, effectively reduced the height dimension of mechanism, improved the compatibility of SFP system.4, because this mechanism element has all adopted die casting mostly, the part non-deformability is relatively good, so the consistency that resets of product is than higher.The motive power that resets of mechanism is the compression spring, so the anti-fatigue ability of mechanism is better.

Description of drawings

Fig. 1 is the outside drawing of SFP structure.

Fig. 2 is the assembly and the installation diagram thereof of SFP structure.

Fig. 3 is the state diagram of SFP lock-bit.

Fig. 4 is SFP released state figure.

Embodiment

Described modular structure comprises interconnective pedestal 1 and eccentric shaft handle 2, it is characterized in that: there is rotating shaft 12 lower end of eccentric shaft handle 2, and utilizes this rotating shaft 12 and the end downside of pedestal 1 right-hand member to be hinged, and eccentric shaft 11 is set on rotating shaft 12 simultaneously; In the bottom of pedestal 1 near a side setting of rotating shaft 12 seesaw 3 that resets, this middle part that resets seesaw 3 utilizes bearing pin and pedestal 1 hinged, the reset drives face 10 that right-hand member setting can cooperate with eccentric shaft 11, be provided for placing the structure of back-moving spring 5 between reset drives face 10 and bearing pin, the two ends of described back-moving spring 5 contact with reset seesaw 3 and pedestal 1 respectively; Described bearing pin is parallel with rotating shaft 12 and eccentric shaft 11.

Be provided for holding the space 14 of seesaw 3 of resetting in the bottom of pedestal 1 corresponding to the position of the seesaw 3 that resets, on the seesaw 3 that resets, be provided for locating the location hole 9 of an end of back-moving spring 5, be provided for locating the positioning pit 13 of the other end of back-moving spring 5 at the corresponding position of pedestal 1.Right side, bottom at pedestal 1 is provided with pressing plate 4, and described rotating shaft 12 is between pressing plate 4 and pedestal 1.

Described reset drives face 10 is curved surfaces, shook hands 2 o'clock at the eccentric shaft that resets, this curved surface is pressed on the eccentric shaft 11, the power that back-moving spring 5 is put on the seesaw 3 that resets passes to eccentric shaft 11, eccentric shaft 11 is rotated counterclockwise around rotating shaft 12, drive eccentric shaft handle 2 and rotate counterclockwise and reset around rotating shaft 12.In pedestal 1, be provided for holding the cavity of optics 8, and be used to locate the positioning cards 7 of optics 8.On pedestal 1, be provided for shielding the radome 6 of optics 8.

Said base 1 is the main body of SFP structure, and the effect in resetting device is to combine for forming the seesaw of leverage with pressing plate 4, and eccentric shaft handle 2 and back-moving spring 5 are positioned.

The main composition of seesaw 3 of resetting is a bearing pin (drawing among the figure), the location hole 9 of 10, one back-moving springs 5 of a reset drives face.Reset drives face 10 is the fitting surface of a mechanism kinematic track.Main effect is to transmit back-moving spring 5 with power and motion between the eccentric shaft handle 2, and guarantees that this motion is reversible.

Eccentric shaft handle 2 is the member of a zinc alloy diecasting, and it mainly is configured to the eccentric shaft 11 of a rotation, and this eccentric shaft 11 has been done the inclination section in eccentric part.When mechanism works, eccentric shaft handle 3 revolves under external force and turn 90 degrees, and eccentric shaft 11 will drive the reset drives face 10 of the seesaw 3 that resets, and makes the seesaw 3 that resets do the rotation of certain angle around rotating shaft 12, make the lock-bit part of the seesaw 3 moving system radomes 6 that reset, with release.And in reseting procedure, eccentric shaft 11 rotating shaft 12 to eccentric shaft handle 2 under the elastic force effect of the back-moving spring 5 that the reset drives face 10 of the seesaw 3 that resets transmits produces turning moments, and makes eccentric shaft handle 2 revolve to turn 90 degrees to reset, and keeps this state.

Back-moving spring 5 is the stage clip of certain diameter and length, and it mainly act as automatically reseting of mechanism motive power is provided, and carries out keeping of mechanism's state after resetting.Pressing plate 4 mainly act as location the reset bearing pin of seesaw 3, the rotating shaft 12 of location eccentricity axle handle 2 simultaneously.

Structural design of the present invention is guaranteeing to concentrate on the design of the automatic reset mechanism of module in hot plug process in accordance with under the prerequisite of MSA agreement.The outward appearance of module is seen Fig. 1.The cardinal principle of resetting device is a lever principle, and main composition has: pedestal 1, and the seesaw 3 that resets, eccentric shaft handle 2, back-moving spring 5, pressing plate 4 major parts such as grade constitute.Pedestal 1 is rotating shaft 12 and other assemblies location of seesaw 3 and the eccentric shaft handle 2 that resets.Fig. 2 and Fig. 3 are seen in its installation.

Working process of mechanism is, when not having external force to act on eccentric shaft handle 2, eccentric shaft handle 2 relies on back-moving springs 5 to maintain the lock-bit state, sees Fig. 3, and the eccentric shaft handle 2 and the seesaw 3 that resets are operated in correspondence position shown in Figure 3.When the dust cover 6 of SFP module insertion system, the lock-bit state of the corresponding resetting device of this state.

When eccentric shaft handle 2 when dextrorotation turn 90 degrees under external force, resetting device is operated in released state, sees Fig. 4, and the eccentric shaft handle 2 of this moment and the seesaw 3 that resets are operated in correspondence position shown in Figure 4.Released state is the operating state of SFP module when taking out from system.Under external force, the eccentric shaft handle 2 and the seesaw 3 that resets are releasing process from the state that the state of Fig. 3 moves to Fig. 4.

When acting on the external force cancellation of eccentric shaft handle 2, a reset end of seesaw 3 of 5 pairs of back-moving springs applies elastic force, and form reverse turning moment, and the reset drives face 10 of the seesaw 3 that resets promotes the eccentric shaft 11 of eccentric shaft handle 2, eccentric shaft handle 2 rich rotating shafts 12 are rotated, and under the effect of the scarf of eccentric shaft 11, keep certain moment, make mechanism return to operating state shown in Figure 3.

After external force was eliminated, mechanism automatically restores to Fig. 3 from Fig. 4 process was the process of automatically reseting.

Claims

1. miniaturization hot swappable optical module structure integrated with sending and receiving, comprise interconnective pedestal (1) and eccentric shaft handle (2), it is characterized in that: there is rotating shaft (12) lower end of eccentric shaft handle (2), and utilize this rotating shaft (12) and the end downside of pedestal (1) right-hand member to be hinged, eccentric shaft (11) is set on rotating shaft (12) simultaneously; In the bottom of pedestal (1) near a side setting of rotating shaft (12) seesaw (3) that resets, the middle part of this seesaw that resets (3) utilizes bearing pin and pedestal (1) hinged, the reset drives face (10) that right-hand member setting can cooperate with eccentric shaft (11), be provided for placing the structure of back-moving spring (5) between reset drives face (10) and bearing pin, the two ends of described back-moving spring (5) contact with seesaw that resets (3) and pedestal (1) respectively; Described bearing pin is parallel with rotating shaft (12) and eccentric shaft (11);

Be provided for holding the space (14) of seesaw (3) of resetting in the bottom of pedestal (1) corresponding to the position of the seesaw that resets (3), on the seesaw that resets (3), be provided for locating the location hole (9) of an end of back-moving spring (5), be provided for locating the positioning pit (13) of the other end of back-moving spring (5) at the corresponding position of pedestal (1).

2. miniaturization hot swappable optical module structure integrated with sending and receiving as claimed in claim 1 is characterized in that: on the right side, bottom of pedestal (1) pressing plate (4) is set, described rotating shaft (12) is positioned between pressing plate (4) and the pedestal (1).

3. miniaturization hot swappable optical module structure integrated with sending and receiving as claimed in claim 1, it is characterized in that: described reset drives face (10) is a curved surface, when resetting eccentric shaft handle (2), this curved surface is pressed on the eccentric shaft (11), the power that back-moving spring (5) is put on the seesaw that resets (3) passes to eccentric shaft (11), eccentric shaft (11) is rotated counterclockwise around rotating shaft (12), drive eccentric shaft handle (2) and rotate counterclockwise and reset around rotating shaft (12).

4. miniaturization hot swappable optical module structure integrated with sending and receiving as claimed in claim 1 is characterized in that: be provided for holding the cavity of optics (8) in pedestal (1), and be used to locate the positioning cards (7) of optics (8).

5. miniaturization hot swappable optical module structure integrated with sending and receiving as claimed in claim 1 is characterized in that: the radome (6) that is provided for shielding optics (8) on pedestal (1).