CN204242842U - A kind of operating mechanism of two-way automatic switching looped network equipment - Google Patents
A kind of operating mechanism of two-way automatic switching looped network equipment Download PDFInfo
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- CN204242842U CN204242842U CN201420725016.4U CN201420725016U CN204242842U CN 204242842 U CN204242842 U CN 204242842U CN 201420725016 U CN201420725016 U CN 201420725016U CN 204242842 U CN204242842 U CN 204242842U
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- sensitive switch
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Abstract
The utility model discloses a kind of operating mechanism of two-way automatic switching looped network equipment, comprise support, rotating shaft, motor, first connecting plate, first cam, annular mounting plate, follower, second cam, 3rd cam, two limiting plates, second straight pin, second torque spring, sensitive switch fixed mount, sensitive switch fixed mount is fixed on annular mounting plate by the 3rd support column, sensitive switch fixed mount is arranged the first sensitive switch, second sensitive switch and the 3rd sensitive switch, first sensitive switch and the 3rd sensitive switch are symmetrical set, first sensitive switch, second sensitive switch is all connected with the control circuit of motor with the 3rd sensitive switch.Beneficial effect is: solving the combined floodgate of looped network equipment both sides in prior art and separating brake needs two to overlap operating mechanism could to realize, and can only manual operation or independent electrically operated technological deficiency separately, it is simple that the utility model also has structure, easy to operate advantage.
Description
Technical field
The utility model relates to a kind of operating mechanism of two-way automatic switching looped network equipment, belongs to electrical equipment technical field.
Background technology
Operating mechanism is one of structure that looped network equipment is commonly used, all have two operating mechanisms in existing looped network equipment, control separating brake and the combined floodgate of looped network equipment both sides respectively, that is the conversion of one of four states is realized by two operating mechanisms, namely an operating mechanism controls the combined floodgate of looped network device A side and the separating brake of A side, another operating mechanism controls the combined floodgate of looped network equipment B side and the separating brake of B side, because the limited space in looped network equipment, two operating mechanisms are set, in looped network equipment on the one hand, space seems more crowded, be unfavorable for the installation of operating mechanism, also make in looped network equipment, to seem very in disorder on the other hand, the more important thing is, owing to can not close a floodgate in the A side of looped network equipment and B side simultaneously, therefore the combined floodgate of A side or B side will be realized, must ensure that opposite side is for gate-dividing state, namely to be taken up in order of priority and the operating mechanism of A side and B side operated, whole process is more loaded down with trivial details, also easily make mistakes.
Existing operating mechanism has two kinds, one purely manually pulls operating mechanism, realize separating brake and the combined floodgate of looped network equipment, a kind of is pure electronic, by motor driver operation mechanism, realize separating brake and the combined floodgate of looped network equipment, due to operating mechanism for one state (such as separating brake) time, keep this state, until need to change its state to apply external force, in order to certain state will be kept, the technological means that existing operating mechanism is taked arranges position-limit mechanism and stopper slot etc., therefore firmly to pull and position-limit mechanism could be removed disengaging in stopper slot, thus realize operating mechanism and change to gate-dividing state from "on" position, or change from gate-dividing state to "on" position, larger to the physical demands of operating personnel after multi-pass operation, pure electrically operated, the motor circuit fault occurred once in a while can not be got rid of, therefore pure manually operated the or pure electrically operated operating mechanism in use a little defect of all existence more or less.
Summary of the invention
The purpose of this utility model is to provide a kind of operating mechanism of two-way automatic switching looped network equipment, solve the combined floodgate of looped network device A side and B side in prior art and separating brake to need two to overlap operating mechanism could to realize, and can only manual operation or independent electrically operated technological deficiency separately.
For solving the problem, technical solution adopted in the utility model is:
An operating mechanism for two-way automatic switching looped network equipment, comprises
Support, described support is made up of front mounting plate, rear mounting panel and the first support column of connecting front mounting plate and rear mounting panel;
Rotating shaft, described rotating shaft is overlapped by center line and relatively turnable driving shaft and driven shaft are formed by connecting, and described driving shaft rotates and is arranged on front mounting plate, and driven shaft rotates and is arranged on rear mounting panel;
Be arranged on the motor that support can be used for drive driving shaft to rotate;
First connecting plate, the first described connecting plate is L-shaped, and the vertical portion of the first connecting plate is fixed on driving shaft;
Be arranged on the first cam on driven shaft, the top of the first described cam arranges the first symmetrical stopper slot of two, left and right, and the bottom of the first cam is connected with the horizontal component of the first connecting plate;
Be arranged on the annular mounting plate between front mounting plate and rear mounting panel, described annular mounting plate is arranged on rear mounting panel by the second support column, and the second described support column arranges sliding shaft sleeve;
Follower, described follower comprises and is fixed on the second cam on driven shaft and the 3rd cam, the bottom of the second described cam and the 3rd cam arranges the second connecting plate, the second described connecting plate is horizontally disposed with and is positioned at the below of the first connecting plate, the second described cam is arranged between the first cam and the 3rd cam and the second cam is positioned at annular mounting plate, and the monosymmetric of the second described cam arranges two the second stopper slots;
Rotate two limiting plates be arranged between the second cam and the 3rd cam, described limiting plate is symmetrical set, and described limiting plate arranges limited post near the bottom of annular mounting plate one end, and one end of described limited post is positioned at the second stopper slot;
Be arranged on the second straight pin between the second cam and the 3rd cam, the second described straight pin arranges the first torque spring, the torque arm at the first described torque spring two ends lays respectively at the below of two limiting plates;
Be sleeved on the second torque spring on driven shaft, the torque arm at the second torque spring two ends extends to the left and right sides of the second connecting plate respectively;
Sensitive switch fixed mount, described sensitive switch fixed mount is fixed on annular mounting plate by the 3rd support column, described sensitive switch fixed mount is arranged the first sensitive switch, the second sensitive switch and the 3rd sensitive switch, the second described sensitive switch is arranged on the bottom of sensitive switch fixed mount, the first described sensitive switch and the 3rd sensitive switch are symmetrical set, and the first described sensitive switch, the second sensitive switch are all connected with the control circuit of motor with the 3rd sensitive switch.
The utility model is manual or have motor to drive driving shaft to rotate, around axis of rotation together with the first connecting plate that driving shaft is fixed together, compress the second torque spring, thus drive follower, then follower drives driven shaft to rotate, and driven shaft rotates thus the on-load switch of the operating mechanism of the two-way automatic switching looped network equipment be connected with driven shaft is closed a floodgate or separating brake.The second cam on driven shaft rotates together with the 3rd cam, second connecting plate rotates together with the 3rd cam with the second cam, second connecting plate turns to the first sensitive switch place, promote the action reed of the first sensitive switch, first sensitive switch closes, if motor-driven, then motor stalls, the on-load switch of the 3rd sensitive switch side closes a floodgate, when the second connecting plate turns to the second sensitive switch place, second sensitive switch closes, on-load switch is in gate-dividing state, and now motor stalls, when second connecting plate turns to the 3rd sensitive switch place, 3rd sensitive switch closes, the on-load switch of the first sensitive switch side closes a floodgate, and motor stalls, first sensitive switch in the utility model, only has one for closure state in second sensitive switch and the 3rd sensitive switch at every turn, when wherein the second sensitive switch closes, first sensitive switch and the 3rd sensitive switch are all for disconnection, namely this on-load switch is in gate-dividing state, first sensitive switch and the 3rd sensitive switch one of them close, then this on-load switch is in "on" position, therefore only need to pull driving shaft make it turn to separating brake or combined floodgate that namely different positions can realize both sides, and do not need to arrange two operating mechanisms, obviously in certain space, arranging an operating mechanism than arranging two operating mechanisms more saves space, also be unlikely to too crowded in whole looped network mechanism, the installation of convenient operation mechanism.The utility model is also provided with motor simultaneously, manually can pull driving shaft, also can driving shaft be driven to rotate by motor and need not manually pull, save manpower, during concrete operations, operating personnel can determine manual operation or motor driver operation by idiomorphism as required.
As further improvement of the utility model, between the second described cam and the 3rd cam, axle sleeve is set, radially on described axle sleeve has through hole, driven shaft has the blind hole corresponding with through hole, in described through hole and blind hole, steady pin is set.
Axle sleeve is fixed on the second cam and the 3rd cam, only axle sleeve and driven shaft need be fixed and namely can realize the second cam and the 3rd cam and driven shaft and fix, and axle sleeve and driven shaft are dismountable, namely the second cam and the 3rd cam can be dismantled from driven shaft, are convenient for changing.
As further improvement of the utility model, described motor is arranged on the top of support, the output shaft of motor is arranged the first pinion, described support is provided with coaxial first gear and the second pinion, the first described pinion is meshed with first gear, described driving shaft arranges second largest gear, and the second described pinion is meshed with second largest gear.
The setting of two gear wheels and two pinions, can mediate to the rotating speed that motor exports, make rotating speed be reduced to suitable numerical value, driving shaft rotation precision is more easy to control.
Further improve as of the present utility model, also comprise counter, described counter is arranged on the top of support, and described driving shaft end is provided with terminal pad, and described terminal pad is connected by extension spring with counter.
The end of driving shaft arranges the terminal pad be connected with counter, terminal pad often rotation once, extension spring pulls counter, make rolling counters forward increase by one, the number of times of the total combined floodgate in both sides and separating brake can be recorded very easily.
In sum, the beneficial effects of the utility model are: solving the combined floodgate of looped network equipment both sides in prior art and separating brake needs two to overlap operating mechanism could to realize, and can only manual operation or independent electrically operated technological deficiency separately, it is simple that the utility model also has structure, easy to operate advantage.
Accompanying drawing explanation
Fig. 1 is left view of the present utility model.
Fig. 2 is perspective view of the present utility model.
Fig. 3 is the schematic diagram of reflection the utility model internal structure.
Fig. 4 is the structural representation of the first cam and rotating shaft in reflection the utility model.
Fig. 5 is the structural representation of the second cam and the 3rd cam in reflection the utility model.
Fig. 6 is the structural representation of driving shaft and driven shaft in reflection the utility model.
Fig. 7 is the N-N cutaway view of Fig. 6.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
The operating mechanism of two-way automatic switching looped network equipment as shown in Figures 1 to 7, comprises following part:
1.. support, described support is made up of with the first support column 3 of rear mounting panel 2 front mounting plate 1, rear mounting panel 2 and connection front mounting plate 1, as depicted in figs. 1 and 2.
2.. rotating shaft, described rotating shaft is overlapped by center line and relatively turnable driving shaft 4 and driven shaft 5 are formed by connecting, one end that driving shaft 4 is connected with driven shaft 5 has blind hole, one end of driven shaft 5 is inserted in blind hole, described driving shaft 4 is rotated by axle sleeve and is arranged on front mounting plate 1, driven shaft 5 is rotated by axle sleeve and is arranged on rear mounting panel 2, as shown in Figure 6 and Figure 7.
3.. be arranged on the motor 6 that support can be used for drive driving shaft 4 to rotate, the top of rear mounting panel 2 has U-lag, and motor 6 is arranged in U-lag, and front mounting plate 1 is provided with motor fixing plate 39 by the 4th support column 35, motor 6 is fixed on motor fixing plate 39, as shown in Figure 2.
4.. the first connecting plate 7, the first described connecting plate 7 is L-shaped, and the vertical portion of the first connecting plate 7 is fixed on driving shaft 4, as shown in Figure 2.
5.. be arranged on the first cam 8 on driven shaft 5, the bottom that the top of the first described cam 8 arranges the first symmetrical stopper slot 9, first cam 8 of two, left and right is connected with the horizontal component of the first connecting plate 7, as shown in Figure 1 and Figure 4.
6.. be arranged on the annular mounting plate 10 between front mounting plate 1 and rear mounting panel 2, described annular mounting plate 10 is arranged on rear mounting panel 2 by the second support column 11, the second described support column 11 arranges sliding shaft sleeve 12, as shown in Figure 2.
7.. follower, described follower comprises the second cam 13 and the 3rd cam 14 that are fixed on driven shaft 5, the second described cam 13 and the bottom of the 3rd cam 14 arrange the second connecting plate 15, the second described connecting plate 15 is formed by the bottom bending of the second cam 13 and the 3rd cam 14, the second described connecting plate 15 is horizontally disposed with and is positioned at the below of the first connecting plate 7, the second described cam 13 is arranged between the first cam 8 and the 3rd cam 14 and the second cam 13 is positioned at annular mounting plate 10, the monosymmetric of the second described cam 13 arranges two the second stopper slots 16, as shown in Figure 3 and Figure 5.
8.. rotate two limiting plates 17 be arranged between the second cam 13 and the 3rd cam 14, first straight pin 36 is set between second cam 13 and the 3rd cam 17, limiting plate 17 is arranged on the first straight pin 36 and also can moves in a circle around the first straight pin 36, described limiting plate 17 is symmetrical set, described limiting plate 17 is arc-shaped near one end of annular mounting plate 10, and the bottom of this end arranges limited post 18, one end of described limited post 18 is positioned at the second stopper slot 16, as shown in Figure 5.
9.. be arranged on the second straight pin 19 between the second cam 13 and the 3rd cam 14, the second described straight pin 19 two ends are separately fixed on the second cam 13 and the 3rd cam 14, and the second straight pin 19 is set with the first torque spring 20, the torque arm at the first described torque spring 20 two ends lays respectively at the below of two limiting plates 17, as shown in Figure 1 and Figure 5.
10.. the torque arm being sleeved on second torque spring 37, second torque spring 37 two ends of on driven shaft 5 extends to the left and right sides of the second connecting plate 15 respectively, as shown in Figure 1.
sensitive switch fixed mount 21, described sensitive switch fixed mount 21 is fixed on annular mounting plate 10 by the 3rd support column 38, 3rd support column 38 is set with sliding shaft sleeve, described sensitive switch fixed mount 21 is arranged the first sensitive switch 22, second sensitive switch 23 and the 3rd sensitive switch 24, the second described sensitive switch 23 is arranged on the bottom of sensitive switch fixed mount 21, the first described sensitive switch 22 and the 3rd sensitive switch 24 are symmetrical set, the first described sensitive switch 22, second sensitive switch 23 is all connected with the control circuit of motor 6 with the 3rd sensitive switch 24.
be arranged on the axle sleeve 25 between the second cam 13 and the 3rd cam 14, as shown in Figure 5, radially on described axle sleeve 25 have through hole 26, driven shaft 5 has the blind hole 27 corresponding with through hole 26, in described through hole 26 and blind hole 27, steady pin (not shown) is set.
deceleration device, described deceleration device comprises the first pinion 28 be arranged on motor 6 output shaft, described support is provided with coaxial first gear 29 and the second pinion 30, the first described pinion 28 is meshed with first gear 29, described driving shaft 4 arranges second largest gear 31, second largest gear 31 is welded and fixed with driving shaft 4, the vertical portion of second largest gear 31 and the first connecting plate 7 is fixed by bolt, the second described pinion 30 is meshed with second largest gear 31, as shown in Figure 1.
counter 32, described counter 32 is arranged on the top of front mounting plate 1, and described driving shaft 4 end is provided with terminal pad 33, and described terminal pad 33 is connected by extension spring 34 with counter 32, as shown in Figure 1.
When using the operating mechanism of two-way automatic switching looped network equipment of the present utility model, driven shaft 5 is connected with the on-load switch (not shown) of the operating mechanism of two-way automatic switching looped network equipment, the rotating band dynamic load switch separating brake of driven shaft 5 and combined floodgate.This specification is using the side at the first sensitive switch 22 place as A side, the side at the 3rd sensitive switch 24 place is illustrated as B side, under normal circumstances, second connecting plate 15 is positioned at immediately below rotating shaft, now the second connecting plate 15 promotes the action reed of the second sensitive switch 23, second sensitive switch 23 closes, first sensitive switch 22 and the 3rd sensitive switch 24 disconnect, on-load switch for gate-dividing state, the separating brake of the operating mechanism of the utility model two-way automatic switching looped network equipment and the operation of combined floodgate as described below.
Embodiment one: manual operation.
1. close a floodgate in .B side:
Driving shaft 4 is pulled with spanner clockwise direction, with the first connecting plate 7 that driving shaft 4 is fixed together with the first cam 8 is also synchronous rotates around main shaft 4, because the second connecting plate 15 remains static, second torque spring 37 is at the first cam 8, twisting force is subject under the effect of the second connecting plate 15, first cam 8, first stopper slot 9 in rotation process acts on B side limited post 18, limiting plate 17 rotates at the clockwise under influence of limited post 18, compress the first torque spring 20, until limiting plate 17 and sliding shaft sleeve 12 to self-locking releasing, promote the first connecting plate 7 in the torque arm of the second torque spring 37 to rotate clockwise, until the first connecting plate 7 and the second connecting plate 15 position overlap, because driven shaft 5 is connected with axle sleeve 25 elastic cylindrical pin, so driven shaft 5 and the second connecting plate 15 synchronously rotate clockwise, complete B side feed motion, meanwhile the first torque spring 20 acts on both sides limited post 18, B side limited post 18 is rotated counterclockwise, until contact the second stopper slot 16 stops, then rotate around driving shaft 4 together with driving shaft 4, until the sliding shaft sleeve 12 that B side limiting plate 17 touches on the 3rd support column 38 stops.
2. close a floodgate in .A side:
A side is closed a floodgate identical with B side feed motion, and the direction that to be only the direction of pulling driving shaft 4 with B side close a floodgate pulls is contrary, and be counter clockwise direction rotation, it will not go into details herein.
3. .B side separating brake:
This process is closed a floodgate similar to A side, and the position of difference just residing for follower is different, and it is all consistent that other comprises rotation direction, will not describe in detail herein.
4. .A side separating brake:
This process is closed a floodgate similar to B side, and the position of difference just residing for follower is different, and it is all consistent that other comprises rotation direction, will not describe in detail herein.
In the utility model during manual operation, motor control loop is unaffected, sensitive switch open closed just when motor driver operation to circuit for controlling motor signal, make motor stalls.
Embodiment two: motor driver operation.
The difference of the present embodiment and embodiment one manipulates motor 6, driving shaft 4 is driven to rotate by gear train transmission, due to the first sensitive switch 22, second sensitive switch 23 is all connected with the control circuit of motor 6 with the 3rd sensitive switch 24, when the first sensitive switch 22, second sensitive switch 23 and the 3rd sensitive switch 24 any one closed time, all send signal to motor, motor is all stopped operating, that is motor contacts the first sensitive switch 22 turning to the second connecting plate 15, stop operating during the position of the second sensitive switch 23 or the 3rd sensitive switch, remaining action is all identical with embodiment one, will not describe in detail herein.
What be not specifically noted in the utility model is prior art, or just can be realized by prior art, and should be understood that described in the utility model, concrete case study on implementation is only better case study on implementation of the present utility model, is not used for limiting practical range of the present utility model.Namely all equivalences done according to the content of the utility model claim change and modify, all should as technology category of the present utility model.
Claims (4)
1. an operating mechanism for two-way automatic switching looped network equipment, is characterized in that: comprise
Support, described support is made up of with first support column (3) of rear mounting panel (2) front mounting plate (1), rear mounting panel (2) and connection front mounting plate (1);
Rotating shaft, described rotating shaft is overlapped by center line and relatively turnable driving shaft (4) and driven shaft (5) are formed by connecting, described driving shaft (4) rotates and is arranged on front mounting plate (1), and driven shaft (5) rotates and is arranged on rear mounting panel (2);
Be arranged on the motor (6) that support can be used for drive driving shaft (4) to rotate;
First connecting plate (7), described the first connecting plate (7) is L-shaped, and the vertical portion of the first connecting plate (7) is fixed on driving shaft (4);
Be arranged on the first cam (8) on driven shaft (5), the top of described the first cam (8) arranges symmetrical the first stopper slot (9) in two, left and right, and the bottom of the first cam (8) is connected with the horizontal component of the first connecting plate (7);
Be arranged on the annular mounting plate (10) between front mounting plate (1) and rear mounting panel (2), described annular mounting plate (10) is arranged on rear mounting panel (2) by the second support column (11), and described the second support column (11) arranges sliding shaft sleeve (12);
Follower, described follower comprises the second cam (13) and the 3rd cam (14) that are fixed on (5) on driven shaft, the bottom of described the second cam (13) and the 3rd cam (14) arranges the second connecting plate (15), described the second connecting plate (15) is horizontally disposed with and is positioned at the below of the first connecting plate (7), described the second cam (13) is arranged between the first cam (8) and the 3rd cam (14) and the second cam (13) is positioned at annular mounting plate (10), the monosymmetric of described the second cam (13) arranges two the second stopper slots (16),
Rotation is arranged on two limiting plates (17) between the second cam (13) and the 3rd cam (14), described limiting plate (17) is symmetrical set, described limiting plate (17) arranges limited post (18) near the bottom of annular mounting plate (10) one end, and one end of described limited post (18) is positioned at the second stopper slot (16);
Be arranged on the second straight pin (19) between the second cam (13) and the 3rd cam (14), described the second straight pin (19) arranges the first torque spring (20), and the torque arm at described the first torque spring (20) two ends lays respectively at the below of two limiting plates (17);
Be sleeved on second torque spring (37) of (5) on driven shaft, the torque arm at the second torque spring (37) two ends extends to the left and right sides of the second connecting plate (15) respectively;
Sensitive switch fixed mount (21), described sensitive switch fixed mount (21) is fixed on annular mounting plate (10) by the 3rd support column (38), described sensitive switch fixed mount (21) arranges the first sensitive switch (22), second sensitive switch (23) and the 3rd sensitive switch (24), described the second sensitive switch (23) is arranged on the bottom of sensitive switch fixed mount (21), described the first sensitive switch (22) and the 3rd sensitive switch (24) are symmetrical set, described the first sensitive switch (22), second sensitive switch (23) is all connected with the control circuit of motor (6) with the 3rd sensitive switch (24).
2. the operating mechanism of two-way automatic switching looped network equipment according to claim 1, it is characterized in that: between described the second cam (13) and the 3rd cam (14), axle sleeve (25) is set, on described axle sleeve (25), radial direction has through hole (26), driven shaft (5) has the blind hole (27) corresponding with through hole (26), in described through hole (26) and blind hole (27), steady pin is set.
3. the operating mechanism of two-way automatic switching looped network equipment according to claim 1, it is characterized in that: described motor (6) is arranged on the top of support, the output shaft of motor (6) is arranged the first pinion (28), described support is provided with coaxial first gear (29) and the second pinion (30), described the first pinion (28) is meshed with first gear (29), described driving shaft (4) arranges second largest gear (31), described the second pinion (30) is meshed with second largest gear (31).
4. the operating mechanism of the two-way automatic switching looped network equipment according to any one of claims 1 to 3, it is characterized in that: also comprise counter (32), described counter (32) is arranged on the top of support, described driving shaft (4) end is provided with terminal pad (33), and described terminal pad (33) is connected by extension spring (34) with counter (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420725016.4U CN204242842U (en) | 2014-11-27 | 2014-11-27 | A kind of operating mechanism of two-way automatic switching looped network equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420725016.4U CN204242842U (en) | 2014-11-27 | 2014-11-27 | A kind of operating mechanism of two-way automatic switching looped network equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204242842U true CN204242842U (en) | 2015-04-01 |
Family
ID=52772304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420725016.4U Withdrawn - After Issue CN204242842U (en) | 2014-11-27 | 2014-11-27 | A kind of operating mechanism of two-way automatic switching looped network equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204242842U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409235A (en) * | 2014-11-27 | 2015-03-11 | 无锡飞世龙机电有限公司 | Operating mechanism of bidirectional automatic switching looped-network device |
-
2014
- 2014-11-27 CN CN201420725016.4U patent/CN204242842U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409235A (en) * | 2014-11-27 | 2015-03-11 | 无锡飞世龙机电有限公司 | Operating mechanism of bidirectional automatic switching looped-network device |
| CN104409235B (en) * | 2014-11-27 | 2016-05-18 | 无锡飞世龙机电有限公司 | A kind of operating mechanism of two-way automatic switching looped network equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150401 Effective date of abandoning: 20160518 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |