CN207573326U - A kind of high light coupling relay of isolation - Google Patents
A kind of high light coupling relay of isolation Download PDFInfo
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- CN207573326U CN207573326U CN201721729909.6U CN201721729909U CN207573326U CN 207573326 U CN207573326 U CN 207573326U CN 201721729909 U CN201721729909 U CN 201721729909U CN 207573326 U CN207573326 U CN 207573326U
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- signal receiving
- light coupling
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Abstract
The utility model discloses a kind of high light coupling relays of isolation, are related to encapsulation technology field, the first frame and the second frame including physical separation；First frame and the second frame are placed, and the first frame partly overlaps with the second frame on the vertical direction of section in the horizontal direction parallel of section；Signal sending end is arranged on the lap position on the first frame, and signal receiving end is arranged on the lap position on the second frame；Signal sending end is opposite with signal receiving end front, and signal sending end and signal receiving end physical isolation；Signal sending end is sealed in signal receiving end in internal resin, and internal resin outer enclosure has external resin.Solve the problems, such as integrally formed design cause sensitive to vibrations, reliability is low, isolation voltage is small, there are afterflow and heat dissipation effect are poor, achieved the effect that buffer external impacts, improved reliability, increase isolation voltage, afterflow is avoided to influence and ensure heat dissipation.
Description
Technical field
The utility model is related to encapsulation technology field, the high light coupling relay of especially a kind of isolation.
Background technology
Most of solid-state relay (English：Solid State Relay, referred to as：SSR) using fire-retardant epoxy resin as
Raw material, using encapsulation technology so that SSR is isolated from the outside.
At present SSR generally uses be integrally formed design, assembling framework only there are one, with reference to refer to figure 1, signal sending end and
Signal receiving end or so distribution, in assembling, by all chips, all assembling on frame, is pasted with silver paste, is then refluxed for welding,
Lead is connected to come, by the way that resin fixation aging is packaged.
But for integrally formed design, due to being uni-frame construction, and only one layer of resin, the pole under external impacts
Yielding therefore more sensitive to impacting and shaking, reliability is relatively low；Due to signal sending end and signal receiving end or so distribution,
In order to ensure that signal receiving end can receive the signal of signal sending end transmitting, usual signal sending end and signal receiving end it
Between distance be fixed as a smaller value, it is smaller so as to cause the isolation voltage of SSR；In addition, if SSR is applied to motor
Control, since integrally formed design parasitic inductance is larger, mechanism has afterflow effect after stopping, therefore can lead to coil-end still
There is the problem of electric current exists, heat dissipation effect is poor.
Utility model content
The utility model is regarding to the issue above and technical need, it is proposed that a kind of high light coupling relay of isolation.
The technical solution of the utility model is as follows：
A kind of high light coupling relay of isolation, the first frame and the second frame including physical separation；
First frame is placed, and first frame and institute with horizontal direction parallel of second frame in section
The second frame is stated to partly overlap on the vertical direction of section；
Signal sending end is arranged on the lap position on first frame, and signal receiving end is arranged on second frame
On lap position；The signal sending end is opposite with the signal receiving end front, and the signal sending end and the letter
Number receiving terminal physical isolation；
The signal sending end is sealed in the signal receiving end in internal resin, the internal resin outer enclosure
There is external resin.
Its further technical solution is：The internal resin is transparent silicone resin, and the external resin is encapsulation tree
Fat.
Its further technical solution is：The section of the internal resin is hexagon.
Its further technical solution is：The thickness of the external resin is at least 5 millimeters.
Its further technical solution is：Switch control device, the switch control are additionally provided on second frame
Device is used to carry out switching manipulation according to the signal of the signal receiving end.
Its further technical solution is：The isolation voltage of the light coupling relay and the signal sending end and the letter
Air line distance between number receiving terminal is proportionate.
Its further technical solution is：The end of the both sides pin of the light coupling relay is aligned setting outward.
The advantageous effects of the utility model are：
By the way that the first frame of physical separation and the second frame are placed in parallel in the vertical direction of section, and keep the
One frame and the second frame partly overlap in the vertical direction, and signal sending end is arranged on the lap position on the first frame,
Signal receiving end is arranged on the lap position on the second frame, and signal sending end is opposite with signal receiving end front so that
The signal that signal sending end is sent easily is received by signal receiving end, so that between signal sending end and signal receiving end
Distance can increase to ensure isolation voltage.By the way that signal sending end and signal receiving end are sealed in internal resin,
Internal resin outer enclosure external resin, thus by internal resin fixedly separated the first frame and the second frame, to external force
It impacts into row buffering, improves the reliability of light coupling relay, in addition, by internal resin and external resin two layers of resin structure,
Afterflow is avoided to influence, ensure that heat distributes in time.
Since internal resin is transparent silicone resin, so as to transmitted light and there is insulating effect.
Since the section of internal resin is hexagon, point discharge phenomenon can be avoided.
Since the thickness of external resin is at least 5 millimeters, it can ensure breakdown voltage.
Since the air line distance between the isolation voltage of light coupling relay and signal sending end and signal receiving end is in positive
It closes, therefore by adjusting the air line distance between signal sending end and signal receiving end, the light of different isolation voltages can be obtained
Coupling relay.
Since pin is aligned setting outward, can to avoid two wire tips it is opposite so as to cause electric discharge the problem of.
Description of the drawings
Fig. 1 is a kind of sectional view of conventional light coupling relay.
Fig. 2 is a kind of sectional view of the high light coupling relay of isolation provided by the utility model.
Fig. 3 is the relational graph of distance between isolation voltage and signal sending end and signal receiving end.
Fig. 4 is the schematic diagram of the high light coupling relay of another isolation provided by the utility model.
Fig. 5 is a kind of pin schematic diagram of the high light coupling relay of isolation provided by the utility model.
Fig. 6 is a kind of assembling process schematic diagram provided by the utility model.
Specific embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
Fig. 2 is a kind of sectional view of the high light coupling relay of isolation provided by the utility model, as shown in Fig. 2, the light
Coupling relay includes the first frame 1 and the second frame 2 of physical separation, and the first frame 1 and the second frame 2 are in the level side of section
To being placed in parallel, and the first frame 1 and the second frame 2 partly overlap on the vertical direction of section.
Signal sending end 3 is arranged on the lap position on the first frame 1, and signal receiving end 4 is arranged on the second frame 2
Lap position, in assembling, signal sending end 3 is opposite with 4 front of signal receiving end, and signal sending end 3 and signal receiving end 4
Physical isolation.
By the first frame 1 and the second frame 2 of physical separation, signal sending end 3, the second frame are installed on the first frame 1
Signal receiving end 4 on frame 2 is installed, can realize complete physical isolation.
Optionally, in practical applications, signal sending end 3 for luminescent device (such as：Light-emitting diode LED), signal connects
Receiving end 4 for light-sensitive device (such as：Photodiode, photistor or photo-thyristor), alternatively, signal sending end 3 is penetrates
Take place frequently emitter, and signal receiving end 4 is radio frequency receiver.
When signal sending end 3 is luminescent device, and signal receiving end 4 is light-sensitive device, signal sending end 3 is received with signal
4 fronts is held to be oppositely arranged so that the overwhelming majority transmitting light that signal sending end 3 is sent out can be absorbed by signal receiving end 4, and
The distance between signal sending end 3 and signal receiving end 4 can regulate and control.Effective distance can ensure isolation voltage.Optionally, exist
In practical application, when distance is 0.4mm, it is ensured that the isolation voltage of 4000V, when distance increases to 0.8mm, Ke Yibao
The isolation voltage of 6000V is demonstrate,proved, when distance increases to more than 1.2mm, it is ensured that the isolation voltage of 8000V.With distance
Increase, the light intensity that signal receiving end 4 can receive dies down, if using the assembly method of left and right distribution in Fig. 1, ensure every
After distance necessary to ionization voltage, signal receiving end can not receive sufficiently strong optical signal, so as to cause circuit can not work
Make, and use in the utility model and place the first frame 1 and the second frame 2 and in vertical side in the horizontal direction parallel of section
Partly overlap upwards so that the signal receiving end on 3 and second frame 2 of signal sending end on the first frame 1 be distributed about 4 and
It is positive opposite so that in the case where ensureing distance remote enough, signal receiving end 4 remains able to receive enough optical signals.
Optionally, the air line distance between the isolation voltage of light coupling relay and signal sending end 3 and signal receiving end 4 is in
Positive correlation with reference to reference to figure 3, schematically illustrates the distance between signal sending end 3 and signal receiving end 4 D and optocoupler
Relationship between the isolation voltage V of relay.
Signal sending end 3 is connected to by bonding line on the first frame 1, and signal receiving end 4 is connected to by bonding line
On two frames 2, bonding line is in the arcuation of outwardly convex.Determine between signal sending end 3 and signal receiving end 4 apart from when,
It needs to take into account on bonding line.
Signal sending end 3 and signal receiving end 4 are sealed in internal resin 5, and 5 outer enclosure of internal resin has external tree
Fat 6.
Physically-isolated signal sending end 3 and signal receiving end 4 are fixed up by internal resin 5, in other words by object
The first frame 1 and the second frame 2 for managing separation are fixed up, then are realized and be isolated by external resin 6, and this divergence type frame can
To improve isolation voltage.
Optionally, with reference to reference to figure 4, switch control device 7 is additionally provided on the second frame 2, switch control device 7 is used for
Switching manipulation is carried out according to the signal of signal receiving end 4.
As shown in Figure 4, together with the first frame 1 is buckled to the second frame 2, signal sending end 3 is upward, and signal receives
Downwards, signal sending end 3 is opposite with 4 front of signal receiving end at end 4.
When signal receiving end 4 receive signal sending end 3 transmission signal when, signal receiving end 4 send out signal (such as：
Light-sensitive device output current) switch control device 7 is controlled to be connected.
Optionally, internal resin 5 is transparent silicone resin, and external resin 6 is potting resin.
When signal sending end 3 is luminescent device, and signal receiving end 4 is light-sensitive device, internal resin 5 requires transparent with logical
Light path is crossed, in addition, internal resin 5 can also play the role of insulation, external resin 6 does not need to light transmission.
Optionally, signal sending end 3 is radiofrequency launcher, and signal receiving end 4 is radio frequency receiver, can using radio frequency transmission
To increase the distance of signal sending end 3 and signal receiving end 4, illustratively, in the case of optic path, signal sending end 3
The distance between signal receiving end 4 could be provided as 1.2mm, if continuing to increase distance, may influence the biography of optical signal
It is defeated, and radio frequency transmission can so that the distance between signal sending end 3 and signal receiving end 4 reach 2mm~5mm, so as to
Improve isolation voltage.
Optionally, the section of internal resin 5 is hexagon.
By the Section Design of internal resin 5 into hexagon, point discharge can be avoided the occurrence of.
Optionally, the thickness of external resin 6 is at least 5 millimeters.
The thickness of external resin 6 is set as more than 5mm, it is ensured that breakdown voltage.
Optionally, the end of the both sides pin of light coupling relay is aligned setting outward, with reference to reference to figure 5, illustratively
Show the shape of pin, the both sides pin of light coupling relay, can by being aligned setting outward by outward bending to horizontal direction
The problem of to avoid pin tip relatively so as to cause electric discharge.
Optionally, specific steps of the light coupling relay in assembling include：
Signal sending end 3 is assembled on the first frame 1, is pasted by silver paste by the first step, and Reflow Soldering connects lead
Come.
Signal receiving end 4 and switch control device 7 are assembled on the second frame 2, are pasted by silver paste by second step, are returned
Fluid welding connects lead to come.
Here wiring pin of the lead come as light coupling relay is connected.
Third walks, and the first frame 1 and the second frame 2 according to distance parameter are aligned and assembled.
4th step coats internal resin, internal resin is fixed aging.
5th step coats external resin, external resin is fixed aging.
6th step carries out Trim Molding to the light coupling relay of encapsulation.
Optionally, assembling process can be combined with reference to the signal in figure 6, and weldering is included on the first frame 1 and the second frame 2
Disk 8, illustratively, there are four the pads 8 on the first frame 1, and there are three the pads on the second frame 2, and signal sending end 3 corresponds to
Silicon chip be fixed on by way of wafer bonding on the first frame 1,4 corresponding silicon chip of signal receiving end and switch control device
7 corresponding silicon chips are fixed on by way of wafer bonding on the second frame 2；Optionally, if 4 received signal of signal receiving end
When weaker, the signal received can also be amplified by amplifying circuit, in practical applications, amplifying circuit is also disposed at signal
On 4 corresponding silicon chip of receiving terminal；Then the first frame 1 of the complete silicon chip of fixation and the second frame 2 are aligned so that signal sending end
3 and the front of signal receiving end 4 it is opposite；Lead is extracted finally by wire bonding 9.
Above-described is only the preferred embodiments of the utility model, and the utility model is not limited to above example.It can
To understand, what those skilled in the art directly exported or associated under the premise of the spirit and design for not departing from the utility model
Oher improvements and changes are considered as being included within the scope of protection of this utility model.
Claims (7)
1. the high light coupling relay of a kind of isolation, which is characterized in that the first frame and the second frame including physical separation；
First frame and second frame are placed in the horizontal direction parallel of section, and first frame and described the
Two frames partly overlap on the vertical direction of section；
Signal sending end is arranged on the lap position on first frame, and signal receiving end is arranged on second frame
Lap position；The signal sending end is opposite with the signal receiving end front, and the signal sending end and the signal connect
Receiving end is physically isolated；
The signal sending end is sealed in the signal receiving end in internal resin, and the internal resin outer enclosure has outer
Portion's resin.
2. the high light coupling relay of isolation according to claim 1, which is characterized in that also set up on second frame
There is switch control device, the switch control device is used to carry out switching manipulation according to the signal of the signal receiving end.
3. the high light coupling relay of isolation according to claim 1, which is characterized in that the internal resin is transparent silicon
Ketone resin, the external resin are potting resins.
4. the high light coupling relay of isolation according to claim 3, which is characterized in that the section of the internal resin is
Hexagon.
5. the high light coupling relay of isolation according to claim 3, which is characterized in that the thickness of the external resin is extremely
It is 5 millimeters less.
6. the high light coupling relay of isolation according to claim 1, which is characterized in that the isolation of the light coupling relay
Air line distance between voltage and the signal sending end and the signal receiving end is proportionate.
7. the high light coupling relay of isolation according to any one of claims 1 to 6, which is characterized in that the optocoupler relay
The end of the both sides pin of device is aligned setting outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721729909.6U CN207573326U (en) | 2017-12-12 | 2017-12-12 | A kind of high light coupling relay of isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721729909.6U CN207573326U (en) | 2017-12-12 | 2017-12-12 | A kind of high light coupling relay of isolation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207573326U true CN207573326U (en) | 2018-07-03 |
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ID=62687872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721729909.6U Active CN207573326U (en) | 2017-12-12 | 2017-12-12 | A kind of high light coupling relay of isolation |
Country Status (1)
| Country | Link |
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| CN (1) | CN207573326U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107911106A (en) * | 2017-12-12 | 2018-04-13 | 无锡豪帮高科股份有限公司 | A kind of light coupling relay of anti-vibration |
-
2017
- 2017-12-12 CN CN201721729909.6U patent/CN207573326U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107911106A (en) * | 2017-12-12 | 2018-04-13 | 无锡豪帮高科股份有限公司 | A kind of light coupling relay of anti-vibration |
| WO2019114166A1 (en) * | 2017-12-12 | 2019-06-20 | 无锡豪帮高科股份有限公司 | Vibration-resistant optically-coupled relay |
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