A kind of buffer unit of real time data backup and protection when realizing the pcb board hot plug
Technical field
The utility model relates to a kind of hot plug buffer unit, particularly a kind of buffer unit of realizing real time data backup and protection when being used for the hot plug pcb board.
Background technology
Along with the fast development of computer network and communications industry, the client is more and more higher to the requirement of communication quality, and common carrier is also more and more higher to the requirement of the non-stop run ability of electronic equipment.Communication equipment is under the prerequisite of power-on serving, and real time data backup and data protection when realizing functional module hot plug fast and effectively are absolutely necessary.
Present most of communication equipment requires non-stop run, and pcb board requires to have the hot plug function, and the structure of this part comprises pcb board assembly, front panel, and wrench assembly, and pcb board is realized the hot plug of functional module by the folding plug of wrench assembly.Because the design feature of the crossbeam of spanner and correspondence; the two locks pcb board; and the open position of qualification spanner; (spanner unclamps from just beginning, and can't plug pcb board, when spanner is opened fully to have formed the idle stroke that has a period of time when spanner is opened; pcb board just can plug; be idle stroke during this period of time), but having corresponding mechanism to cooperate, most of pcb board do not realize real time data backup and protection, when hot plug, may lose important communication data.
At present, have a kind of prestige figure spanner can realize the hot plug function, its structural representation is seen Fig. 1, the structural representation when Fig. 2 opens for its spanner.As seen in Fig., its hot plug function is mainly realized by spanner.Prestige figure wrench assembly by spanner 6 ', spanner bearing 3 ', sensitive switch assembly 4 ' composition (the sensitive switch assembly is made up of sensitive switch and coupled signal cable), sensitive switch assembly 4 ' be installed on spanner bearing 3 ' on.Spanner 6 ' the hook structure unique with spanner bearing 3 ' be provided with specially, this hook structure fastens when locking, opens during plug.During spanner 6 ' closure, spanner 6 ' top protrusions press sensitive switch makes its closure, this moment spanner 6 ' with spanner bearing 3 ' on grab engage and make panel assembly 5 ' locked; During spanner 6 ' unlatching, spanner 6 ' upwards pull, spanner 6 ' upward projection is unclamped the pressure of sensitive switch is touched, sensitive switch disconnection this moment also provides a signal of telecommunication, be transported to pcb board by the holding wire that connects on the sensitive switch, be transported to network management system again, this pcb board 1 of notice network management system ' plug, network management system backs up this pcb board 1 ' real time data, thereby realizes PCB hot plug function.
As can be seen from the figure, the idle stroke that this structure is utilized spanner to open and caused backs up real time data, the backup protection of the real time data that realizes, but need design special spanner and spanner bearing, the one, form the pressure of sensitive switch is touched, the 2nd, can when the pcb board operate as normal, lock being connected of pcb board and panel assembly, need to be provided with special projection on the spanner for this reason, cooperating pressure touch micro switch with sensitive switch, and the grab of special shape is arranged between spanner and the spanner bearing, form the locking mechanism between the two; The time enough (network management system from receive hot plug request to finish data backup generally be no more than 0.5 second) of while in order to make data backup, design need be to the special design of spanner and crossbeam 2 ' do during spanner, the two can be engaged in unclamps the pressure of sensitive switch after touch to the idle stroke of pulling out before the pcb board for some time, make the spanner 6 of above-mentioned prestige figure spanner ', spanner bearing 3 ', crossbeam 2 ' necessary supporting use, structure above-mentioned in the use of reality must be customized specially, can not cooperate the wrench assembly of existing P CB plate to use, make its cost up.
And the cable plug that prestige figure spanner is installed in the sensitive switch connection on the pcb board is inserted on the corresponding socket of PCB, and increase operation, signal need be transferred, thereby be influenced its reliability.
Summary of the invention
The purpose of this utility model provides a kind of simple and easy to do real time data backup and protection buffer unit when being used to realize the hot connecting and disconnecting subset, the problem of real time data backup when having solved the pcb board hot plug.
The buffer unit of real time data backup and protection when another purpose of the present utility model provides a kind of realization pcb board hot plug that can make full use of existing general spanner device and sensitive switch assembly; this device is applicable to spanner and the casing structure that generally uses at present, need not spanner and crossbeam are changed.
Another purpose of the present utility model provides a kind of buffer unit of real time data backup and protection when realizing hot plug; this device is directly installed on the cable plug of sensitive switch on the pcb board; signal is directly flowed to network management system from pcb board, make it to have higher reliability.
Execution mode of the present utility model is as follows:
A kind of buffer unit of real time data backup and protection when realizing the pcb board hot plug, this device and PCB assembly are used, and are arranged between the sensitive switch and spanner of described PCB assembly, one end pressure touch micro switch, an end is pushed by spanner; During spanner locking, this device presses sensitive switch; When spanner unclamped, this device broke away from pressing sensitive switch.
This device comprises the sensitive switch push rod, sensitive switch push rod supporting seat and the back-moving spring that the sensitive switch push rod is resetted.
Described buffer unit, the sensitive switch push rod passes the sensitive switch supporting seat, and the sensitive switch supporting seat is stretched out at two ends; Back-moving spring is set on the sensitive switch push rod, and is arranged in the sensitive switch supporting seat; The part that the sensitive switch push rod is positioned at sensitive switch supporting seat inside has outstanding expansion footpath, can only move under the effect of spanner and back-moving spring with constraint sensitive switch push rod, and can not skid off the sensitive switch supporting seat.
Described PCB assembly comprises pcb board, sensitive switch, front panel and wrench assembly, wherein sensitive switch is welded on the pcb board, pcb board and wrench assembly fixing with front panel on, whole PCB assembly is implemented in plug in the cabinet by wrench assembly up and down.
Described wrench assembly comprises spanner, spanner base and buckle, and the position that spanner is corresponding with buckle is provided with aperture, and buckle passes this hole during locking, and the screens spanner can not get loose it; There is perforate to pass through on the spanner base for the sensitive switch push rod.
Described sensitive switch is installed on the pcb board, and buffer unit also is installed on the pcb board, and sensitive switch push rod one end on it gently is pressed on the sensitive switch, and the aperture that the other end passes on section bar panel and the spanner base exposes.When pcb board inserted, it is locked that spanner is compacted to buckle, and spanner promotion this moment sensitive switch push rod compresses sensitive switch makes its closure, and sensitive switch provides this pcb board of signal of telecommunication notice network management system operate as normal; During the hot plug pcb board; must break the spanner buckle into two with one's hands with hand earlier; this moment, spanner had one section idle stroke; could outwards contact with crossbeam and firmly extract; pull about about 1 second of the idle stroke of spanner this moment; the sensitive switch push rod outwards ejects the sensitive switch push rod under the effect of back-moving spring after unclamping spanner; the end that the sensitive switch push rod compresses sensitive switch unclamps sensitive switch resets it; after unclamping sensitive switch; sensitive switch provides a signal of telecommunication immediately and gives network management system; this pcb board of notice network management system is wanted hot plug; network management system backs up the real time data of this pcb board immediately; network management system generally is no more than 0.5 second from receiving the hot plug request to finishing data backup, thus the function of backup of the real time data when successfully realizing hot plug and protection.
The utility model adopts is doing simple the transformation on the universal architecture basis now; just make it to have the effect that realizes real time data backup and protection; simple and easy to do; Fu Jia devices such as sensitive switch push rod are made processing easily in addition, and data backup and the defencive function of existing most of spanners can utilize the utility model to reach the pcb board hot plug time.Use the utility model when the pcb board hot plug, to have enough idle strokes and send warning message to network management system in advance; make network management system can in time back up the data of this pcb board; thereby the timely backup and the protection of pcb board data when reaching hot plug can improve the service quality of communication equipment greatly when guaranteeing the non-stop run ability of equipment.
The utility model is directly installed on sensitive switch on the pcb board, does not need signal converting, but signal is directly flowed to network management system from pcb board, makes it to have higher reliability.
Description of drawings
Fig. 1 is the structural representation of prestige figure spanner,
Fig. 2 is into the plug status architecture schematic diagram of figure spanner,
Fig. 3 is the assembling exploded view with the utility model embodiment pcb board structure,
Fig. 4 is the structural representation of wrench assembly shown in Figure 3,
Fig. 5 is the STRUCTURE DECOMPOSITION figure of wrench assembly shown in Figure 4,
Fig. 6 is the structural representation of buffer unit among Fig. 3,
Fig. 7 is the STRUCTURE DECOMPOSITION figure of buffer unit among Fig. 6;
Fig. 8 is the local enlarged diagram that structure shown in Figure 3 is in locking state,
Fig. 9 is in the local enlarged diagram of plug state for structure shown in Figure 3.
Embodiment
Shown in Figure 3, buffer unit of the present utility model 3 usually with sensitive switch 2 the same being fixed on the pcb board 1, and be arranged between sensitive switch 2 and the wrench assembly 5, pcb board is arranged on the front panel 4, can plug.
As Fig. 4, shown in Figure 5, wrench assembly is made up of three parts: spanner 6, spanner base 7, buckle 8.Spanner 6 has auto-lock function, and when spanner 6 compressed, the aperture that buckle 8 passes on the spanner 6 utilized the elasticity of spring leaf to block spanner 6, and it can not be got loose; In the time of need pulling out pcb board 1, break buckle 8 into two with one's hands with hand earlier itself and spanner 6 are got loose, pull spanner 6 again pcb board 1 is extracted.
As Fig. 6, shown in Figure 7, buffer unit 3 is made up of three parts: sensitive switch push rod supporting seat 9, back-moving spring 10, sensitive switch push rod 11.Back-moving spring 10 penetrates sensitive switch push rod 11 and reinstalls sensitive switch push rod supporting seat 10, wherein the back-moving spring two ends are pressed in respectively on the U-shaped inner surface of sensitive switch push rod supporting seat 10, the part that sensitive switch push rod 11 is positioned at sensitive switch supporting seat 9 inside has outstanding expansion footpath, can only under the effect of spanner 6 and back-moving spring 10, move with constraint sensitive switch push rod 11, and can not skid off sensitive switch supporting seat 9.
As Fig. 8, shown in Figure 9, buffer unit 3 is installed on the pcb board 1, between sensitive switch 2 and wrench assembly 5.
When inserting pcb board 1, earlier shift pcb board 1 onto spanner 6 service positions, breaking spanner 6 off with the fingers and thumb with hand makes the A point of spanner 6 engage with buckle 8 until spanner 6 with crossbeam 12 interlocks, this moment, spanner 6 lower surfaces promoted inwardly motion of sensitive switch push rod 11, sensitive switch 2 is closed under the promotion of sensitive switch push rod 11, sensitive switch 2 provides this pcb board 1 of signal of telecommunication notice network management system operate as normal, and at this moment this pcb board 1 is in the operating state of locking; When pulling out pcb board 1, earlier break buckle 8 and spanner 6 off with the fingers and thumb disengaging with hand, spanner 6 broke away from the B point from A point and crossbeam 12 and contacted one section idle stroke (i.e. spanner rotation at this moment but pcb board 1 remain static, and pcb board is still in running order) with crossbeam 12 this moment.Sensitive switch push rod 11 is outwards motion under the effect of back-moving spring 10; meanwhile unclamp pressing to sensitive switch 2; when spanner 6 moves to the B point and contacts with crossbeam 12; sensitive switch push rod 11 has been got back to fully and has just been known the position; this moment, sensitive switch 2 resetted, and provided a signal of telecommunication and gave network management system, notified this pcb board 1 just in hot plug; network management system backs up the real time data of this pcb board 1 immediately, thus protection of the real time data when reaching pcb board 1 hot plug and backup.
The utility model is not done change to existing spanner; real-time data backup and defencive function when so most of existing spanners can utilize the utility model to realize the pcb board hot plug; to different spanners; can determine concrete size of the present utility model according to the idle stroke of each spanner, to be suitable for various situations.
And independent the utility model that is provided with is directly installed on the pcb board, and signal directly flows to network management system from pcb board, has higher reliability.
The above embodiments only are a kind of modes that the utility model is implemented; the mode of buffer unit of the present utility model can have multiple; as long as it is between sensitive switch and spanner; one end is gently pressed sensitive switch; one end can be pushed by spanner; and can flexibly reset when releasing is pushed and can reach effect of the present utility model, so similar structure is all within protection range of the present utility model.