CN109755046A - The contact system of static contact and automatic change-over - Google Patents
The contact system of static contact and automatic change-over Download PDFInfo
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- CN109755046A CN109755046A CN201910035751.XA CN201910035751A CN109755046A CN 109755046 A CN109755046 A CN 109755046A CN 201910035751 A CN201910035751 A CN 201910035751A CN 109755046 A CN109755046 A CN 109755046A
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- 230000003068 static effect Effects 0.000 title claims abstract description 57
- 238000005452 bending Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The present invention relates to Low Voltage Electrical Apparatus, more particularly to a kind of static contact, it includes contact portion and terminal plate, two contact portions are disposed side by side on terminal plate one end, the gap g being inserted into for moving contact is equipped between two contact portions, width < moving contact thickness of gap g, after moving contact is inserted into gap g, two contact portions clamp the two sides of moving contact, static contact of the invention when moving contact is inserted into static contact, has automatic cleaning action, guarantee the contact reliability and satisfactory electrical conductivity of static contact and moving contact, and the contact pressure between static contact and moving contact can be provided.Further relate to a kind of contact system of automatic change-over comprising the static contact makes contact system have automatic cleaning action, ensure that the stability and reliability of automatic change-over work.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus, and in particular to a kind of static contact further relates to a kind of with the static contact
The contact system of automatic change-over.
Background technique
Existing automatic change-over, the clapper-type structure being all made of, has the advantages that structure is simple, but in moving contact and
Without automatic cleaning action when static contact contacts, and moving contact and static contact are clapped when closing, and therebetween when just contact, hold moving contact
Easily bounce, generate electric arc, lead to problems such as to move/static contact burn it is serious with the degree of wear, automatic change-over it is specified
KA Rms is difficult to improve.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of static contact is provided, when moving contact is inserted into static contact,
With automatic cleaning action, guarantee the contact reliability and satisfactory electrical conductivity of static contact and moving contact, and can provide static contact and
Contact pressure between moving contact；Also provide a kind of contact system of automatic change-over comprising the static contact makes to contact
System has automatic cleaning action, ensure that the stability and reliability of automatic change-over work.
To achieve the above object, present invention employs following technical solutions:
A kind of static contact comprising contact portion 20 and terminal plate 22, two contact portions 20 are disposed side by side on terminal plate 22 1
It holds, the gap g being inserted into for moving contact 11 is equipped between two contact portions 20, the thickness of width < moving contact 11 of gap g moves touching
After first 11 insertion gap g, two contact portions 20 clamp the two sides of moving contact 11.
Preferably, each contact portion 20 includes contact plate 200 and connecting plate 201, and connecting plate 201 is twist shape knot
Structure, both ends are connected with contact plate 200 and terminal plate 22 respectively.
Preferably, one end of the connecting plate 201 being connected with contact plate 200, with connecting plate 201 and terminal plate 22 phase
One end even is vertical.
Preferably, the contact portion 20 and terminal plate 22 are an integral structure.
It preferably, further include the spring leaf 21 of U-shaped structure, spring leaf 21 includes bottom plate 210 and clamp arm 211, two folders
Arm 211 is separately positioned on the both ends of bottom plate 210 and two clamp arm 211 with respect to bending, and bottom plate 210 is fixedly linked with terminal plate 22,
Two clamp arm 211 are located at the two sides of two contact portions 20, and the free end of two clamp arm 211 is supported with two contact portions 20 respectively
Press-fit.
Preferably, each clamp arm 211 includes the first plate of clamp arm 2111, the second plate of clamp arm 2112 and steps up portion
2113,2111 one end of the first plate of clamp arm is connected with 210 end of bottom plate, and the other end is connected with 2112 one end of the second plate of clamp arm, clamp arm
Second plate, 2112 other end is connected with the portion of stepping up 2113；Two first plates of clamp arm 2111 are arranged in parallel, two clamp arm second
Plate 2112 is with respect to bending.
Preferably, the portion 2113 that steps up is arc plate structure.
A kind of contact system of automatic change-over comprising trigger device 1 and setting are in 1 periphery of trigger device
Common power contact head 4, backup power source contact 3, common load contact 6, the Alternative load contact 5 of side commonly use power contact head 4, standby
It include any one described static contact with power contact head 3, common load contact 6 and Alternative load contact 5.
Preferably, the trigger device 1 includes that contact supports 10 and moving contact 11, moving contact 11 to be inserted into contact support
The prominent two sides in contact support 10 on the 10 and both ends of moving contact 11；
When the automatic change-over is in double gate-dividing states, one end of moving contact 11 is located at common load contact 6 and standby
With between power contact head 3, the other end is between Alternative load contact 5 and common power contact head 4；At the automatic change-over
When common power supply on state, 11 one end of moving contact is connected with common power contact head 4, the other end and 6 phase of common load contact
Even；When the automatic change-over is in backup power source on state, 11 one end of moving contact is connected with backup power source contact 3, separately
One end is connected with Alternative load contact 6；
The moving contact 11 under moving contact 11 and backup power source on state under common power supply on state is at X-type cross.
Preferably, the trigger device 1 further includes moving contact fixed link 12, and moving contact fixed link 12 is inserted into contact branch
Hold axial parallel on 10 and with contact support 10, limit cooperation in the middle part of moving contact fixed link 12 and moving contact 11.
Preferably, the common load contact 6, Alternative load contact 5 are located at 1 side of trigger device, common load touching
First 6 are located at 5 top of Alternative load contact, and common power contact head 4, backup power source contact 3 are located at 1 other side of trigger device, often
It is located at 3 lower section of backup power source contact with power contact head 4, the line of common load contact 6 and common power contact head 4 is born with spare
The X-type cross that is wired to of contact 5 and backup power source contact 3 is carried, trigger device 1 is located at common load contact 6, backup power source touches
First 3, it commonly uses in the quadrangle space that power contact head 4 and Alternative load contact 5 surround.
Static contact of the invention comprising two contact portions arranged side by side are preset with gap between two contact portions,
Width < moving contact thickness of gap, when moving contact is inserted into gap, relative friction between meeting and contact portion has automatic cleaning action,
Be conducive to improve reliability and good electric conductivity that moving contact is contacted with static contact, and behind moving contact insertion gap, two
The two sides of contact portion clamping moving contact, it is ensured that there are certain contact pressure between moving contact and static contact, be conducive to further
Improve the reliability and good electric conductivity of moving contact and static contact contact.
The contact system of automatic change-over of the invention includes the static contact, and making contact system has automatically cleaning work
With the reliability and good electric conductivity that guarantee moving contact is contacted with static contact ensure that the stabilization of automatic change-over work
Property and reliability；And compared with the existing automatic change-over closed using moving contact and static contact bat, of the invention is automatic
The contact system of change-over switch will not generate moving contact spring in conducting, avoid moving/static contact is cauterized and is seriously worn
It happens, is also beneficial to improve the specified KA Rms of automatic change-over.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the contact system of the automatic change-over under double gate-dividing states of the invention；
Fig. 2 is the structural schematic diagram of the contact system of the automatic change-over under backup power source on state of the invention；
Fig. 3 is the structural schematic diagram of the contact system of the automatic change-over under common power supply on state of the invention；
Fig. 4 is the structural schematic diagram of moving contact of the invention；
Fig. 5 is the structural schematic diagram of static contact of the invention；
Fig. 6 is the structural schematic diagram of static contact of the invention, and wherein spring leaf is disassembled；
Fig. 7 is the structural schematic diagram of spring leaf of the present invention.
Specific embodiment
Below in conjunction with the embodiment that attached drawing 1-7 is provided, the specific embodiment of static contact of the invention is further illustrated.This
The static contact of invention is not limited to the following description.
Static contact of the invention comprising contact portion 20 and terminal plate 22, two contact portions 20 are disposed side by side on terminal plate
22 one end are preset with the gap g being inserted into for moving contact 11, the thickness of width < moving contact 11 of gap g between two contact portions 20
Degree, after moving contact 11 is inserted into gap g, two contact portions 20 clamp the two sides of moving contact 11.
Static contact of the invention comprising two contact portions 20 being disposed side by side on are preset between two contact portions 20
The thickness of the width summary < moving contact 11 of gap g, gap g is opposite between meeting and contact portion 20 to rub when moving contact 11 is inserted into gap
It wipes, there is automatic cleaning action, be conducive to improve reliability and good electric conductivity that moving contact 11 is contacted with static contact, Er Qiedong
After contact 11 is inserted into gap g, two contact portions 20 clamp the two sides of moving contact 11, it is ensured that exist between moving contact 11 and static contact
Certain contact pressure is conducive to the reliability and good electric conductivity that further increase moving contact 11 and static contact contact.
It as illustrated in figs. 5-7, is one embodiment of static contact of the present invention.
As it can be seen in figures 5 and 6, static contact of the invention includes the spring leaf of contact portion 20, terminal plate 22 and U-shaped structure
21, two contact portions 20 are disposed side by side on 22 one end of terminal plate, are preset between two contact portions 20 for the insertion of moving contact 11
Gap g, the width of gap g is slightly less than the thickness of moving contact 11, and after moving contact 11 is inserted into gap g, two contact portions 20 clamp dynamic
The two sides of contact 11, spring leaf 21 include bottom plate 210 and clamp arm 211, and two clamp arm 211 are separately positioned on the both ends of bottom plate 210
And two clamp arm 211, with respect to bending, bottom plate 210 is fixedly linked with terminal plate 22, and two clamp arm 211 are located at contact portion 20
Two sides, the free end of two clamp arm 211 compress cooperation with two contact portions 20 respectively.Specifically, direction as shown in Figure 5, with Fig. 5
Left side, right side, upside, downside be static contact left side, right side, upside, downside, stationary contact is in the side using Fig. 5 towards reader
The front side of head, two contact portions 20 are disposed side by side on the left end of terminal plate 22, and bottom plate 210 passes through the first attachment screw 23 and wiring
Plate 22 is connected, and two clamp arm 211 are located at the front and rear sides of two contact portions 20, and each clamp arm 211 is to contact portion 20
Direction bending, the free end of each clamp arm 211 are compressed with the contact plate 200 of a contact portion 20.
Two clamp arm 211 of static contact of the invention, spring leaf 21 exist the aid of contact plate 200 of two contact portions 20
Between two clamp arm 211, opposite pressure is provided for the contact plate 200 of two contact portions 20, first further provides for moving contact
11 pressure when being contacted with static contact, while two contact portions 20 are also avoided or substantially reduced because long-time is squeezed by moving contact 11
And/or influenced by high temperature, there is a situation where reduction moving contact 11 and static contact contact reliability occur away from each other.
Preferably, as shown in fig. 6, each contact portion 20 includes contact plate 200 and connecting plate 201, connecting plate 201
For twist shape structure, both ends are connected with contact plate 200 and terminal plate 22 respectively.Further, as shown in fig. 6, the connection
The one end of plate 201 being connected with contact plate 200, it is vertical with the one end of connecting plate 201 being connected with terminal plate 22.Specifically, such as
The left and right ends in direction shown in Fig. 6, the connecting plate 201 are connected with contact plate 200 and terminal plate 22 respectively, connecting plate 201
Left end is vertical with right end.The connecting plate 201 is twist shape structure, and 201 spiral of connecting plate is twisted into twist shape structure, favorably
In improving the intensity of connecting plate 201, to be conducive to keep the width of the gap g between two contact plates 200, guarantee moving contact
11 and static contact contact reliability and satisfactory electrical conductivity.Obviously, connecting plate 201 is that straight plate also can be achieved on,
It belongs to the scope of protection of the present invention.
Preferably, as shown in fig. 6, the connecting plate 201 is connected with 22 right angle of terminal plate, and between two connecting plates 201
There are a fixed gaps, to avoid the first attachment screw 23.
Preferably, as shown in fig. 6,22 left end of the terminal plate is equipped with the first connecting hole 222, the first connecting hole 222 is located at
Between two contact portions 20, it is threadedly coupled with the first attachment screw 23.
Preferably, as shown in fig. 6,22 right end of the terminal plate is additionally provided with wiring screw hole 220 and contact fixation hole 221.
Preferably, direction as shown in Figure 6 is equipped with the first guide frame at two ribs of 200 upside of the contact plate
202, the first guide frame 202 is equipped at two ribs of the downside of contact plate 200.
Preferably, the contact portion 20 and terminal plate 22 are an integral structure.Further, the contact portion 20 and wiring
Plate 22 is to be formed using metal plate by procedure of processings such as bending, torsion and cuttings, and stock utilization is high, advantageously reduces production
Cost.
Preferably, as shown in fig. 7, the spring leaf 21 is U-shaped structure comprising bottom plate 210 and clamp arm 211, two
Clamp arm 211 is separately positioned on the both ends of bottom plate 210 and two clamp arm 211 are with respect to bending, and each clamp arm 211 includes clamp arm first
Plate 2111, the second plate of clamp arm 2112 and step up portion 2113,2111 one end of the first plate of clamp arm is connected with 210 end of bottom plate, the other end
It is connected with 2112 one end of the second plate of clamp arm, 2112 other end of the second plate of clamp arm is connected with the portion of stepping up 2113；Two clamp arm
One plate 2111 is arranged in parallel, and two the second plates of clamp arm 2112 are with respect to bending.Specific direction as shown in Figure 7, the bottom plate 210 are left
Right both ends are respectively provided with a clamp arm 211, and clamp arm 211 is connected with 210 right angle of bottom plate, and second plate of clamp arm 2112 in left side is rolled over to the right
It is curved, 2112 bending to the left of the second plate of clamp arm on right side.
Preferably, as shown in fig. 7, the portion 2113 that steps up is arc plate structure.
Preferably, as shown in fig. 7, being equipped with bottom plate connecting hole 2101 in the middle part of the bottom plate 210, the first attachment screw 23 passes through
First connecting hole 222 of bottom plate connecting hole 2101, terminal plate 22, spring leaf 21 and terminal plate 22 are fixedly linked.
As shown in Figs 1-4, invention additionally discloses a kind of contact systems of automatic change-over comprising trigger device 1
And the common power contact head 4 of 1 peripheral side of trigger device, backup power source contact 3, common load contact 6, spare negative is set
Contact 5 is carried, commonly using power contact head 4, backup power source contact 3, common load contact 6 and Alternative load contact 5 includes the present invention
The static contact.Specific direction as shown in Figure 1, the common load contact 6, Alternative load contact 5 are located at moving contact dress
1 left side is set, common load contact 6 is located at 5 top of Alternative load contact, commonly uses power contact head 4, backup power source contact 3 positioned at dynamic
1 right side of contact apparatus, common power contact head 4 are located at 3 downside of backup power source contact, common load contact 6 and common power contact head 4
Line, be wired to X-type cross with Alternative load contact 5 and backup power source contact 3, trigger device 1 is located at common load
Contact 6, is commonly used in the quadrangle space that power contact head 4 and Alternative load contact 5 surround backup power source contact 3, i.e. common load
Contact 6, backup power source contact 3, common power contact head 4 and Alternative load contact 5 are circumferentially positioned at 1 surrounding of trigger device.
The contact system of automatic change-over of the invention has automatic cleaning action, and what guarantee moving contact was contacted with static contact can
It by property and good electric conductivity, ensure that the reliability and stability of automatic change-over work, be conducive to improve the present invention certainly
Connection/breaking capacity of dynamic change-over switch；And the automatic change-over phase closed is clapped using moving contact and static contact with existing
Than the contact system of automatic change-over of the invention will not generate moving contact spring in conducting, and generation electric arc is small, avoids
The case where dynamic/static contact is cauterized and is seriously worn is also beneficial to improve the specified tolerance electricity in short-term of automatic change-over
Stream.
As shown in figs. 1 and 4, the trigger device 1 includes that contact support 10 and moving contact 11, moving contact 11 are inserted into touching
Head supports the prominent two sides in contact support 10 on the 10 and both ends of moving contact 11.As shown in Figure 1, at the automatic change-over
When double gate-dividing states, between common load contact 6 and backup power source contact 3, the other end is located at for one end of moving contact 11
Between Alternative load contact 5 and common power contact head 4.As shown in Fig. 2, the automatic change-over is in backup power source conducting shape
State, 11 one end of moving contact are connected with backup power source contact 3, and the other end is connected with Alternative load contact 5.As shown in figure 3, it is described from
It moves change-over switch and is in common power supply on state, 11 one end of moving contact is connected with common power contact head 4, and the other end is born with common
Contact 6 is carried to be connected.In conjunction with Fig. 1 and Fig. 4, commonly use dynamic under the moving contact 11 and backup power source on state under power supply on state
Contact is at X-type cross.Above structure makes between common power contact head 4 and backup power source contact 3, common load contact 6 and spare
There are necessary spaces between load contact 5, avoid automatic change-over short circuit occurred inside, are conducive to improve the present invention automatically
The insulating properties and safety of change-over switch.
Preferably, as shown in Figure 1, the trigger device 1 further includes moving contact fixed link 12, moving contact fixed link 12 is inserted
It is axial parallel in contact support 10 and with contact support 10, it limits and matches in the middle part of moving contact fixed link 12 and moving contact 11
It closes, ensure that moving contact 11 and contact support the reliability and stability of 10 assembly.
Preferably, as shown in figure 4, the moving contact 11 is long panel type structure, middle part is equipped with and moving contact fixed link 12
The moving contact fixation hole 110 of cooperation.
Preferably, as shown in figure 4, the end two sides of the moving contact 11 are equipped with the second guide frame 112, in order to dynamic
11 end of contact is smoothly inserted between two contact portions 20 of static contact.It is specific as shown in figure 4,11 upper end of moving contact
The left and right sides is equipped with the second guide frame 112, and the second guide frame 112 is equipped at left and right sides of 11 lower end of moving contact.
Preferably, as shown in Figures 2 and 3, trigger device 1 of the invention includes that contact supports 10 and multiple moving contacts 11,
Multiple moving contacts 11 are inserted into contact side by side and support on 10, parallel to each other between moving contact 11, and pass through moving contact fixed link 12
It is connected with each other, each moving contact 11 is touched with a common load of backup power source contact 3, one of common power contact head 4, one
First 6, Alternative load contacts 5 are respectively cooperating with.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (11)
1. a kind of static contact, which is characterized in that it includes contact portion (20) and terminal plate (22), and two contact portions (20) set side by side
The gap (g) for being equipped between terminal plate (22) one end, two contact portions (20) and being inserted into for moving contact (11) is set, gap (g)
The thickness of width < moving contact (11), after moving contact (11) is inserted into gap (g), two contact portions (20) clamp moving contact (11)
Two sides.
2. static contact according to claim 1, it is characterised in that: each contact portion (20) includes contact plate
(200) and connecting plate (201), connecting plate (201) is twist shape structure, both ends respectively with contact plate (200) and terminal plate
(22) it is connected.
3. static contact according to claim 2, it is characterised in that: the connecting plate (201) is connected with contact plate (200)
One end, it is vertical with the one end of connecting plate (201) being connected with terminal plate (22).
4. static contact according to claim 1, it is characterised in that: the contact portion (20) and terminal plate (22) are integral type
Structure.
5. static contact according to claim 1, it is characterised in that: further include the spring leaf (21) of U-shaped structure, spring leaf
It (21) include bottom plate (210) and clamp arm (211), two clamp arm (211) are separately positioned on the both ends of bottom plate (210) and two clamp arm
(211) opposite bending, bottom plate (210) are fixedly linked with terminal plate (22), and two clamp arm (211) are located at two contact portions
(20) two sides, the free end of two clamp arm (211) compress cooperation with two contact portions (20) respectively.
6. static contact according to claim 5, it is characterised in that: each clamp arm (211) includes the first plate of clamp arm
(2111), the second plate of clamp arm (2112) and step up portion (2113), the first plate of clamp arm (2111) one end and bottom plate (210) end phase
Even, the other end is connected with the second plate of clamp arm (2112) one end, and the second plate of clamp arm (2112) other end is connected with the portion of stepping up (2113)；
Two first plates of clamp arm (2111) are arranged in parallel, and two the second plates of clamp arm (2112) are with respect to bending.
7. static contact according to claim 6, it is characterised in that: described step up portion (2113) are arc plate structure.
8. a kind of contact system of automatic change-over, which is characterized in that it includes trigger device (1) and setting in dynamic touching
Common power contact head (4), backup power source contact (3), the common load contact (6), Alternative load contact of head device (1) peripheral side
(5), commonly using power contact head (4), backup power source contact (3), common load contact (6) and Alternative load contact (5) includes power
Benefit requires any one static contact described in 1-6.
9. the contact system of automatic change-over according to claim 8, it is characterised in that: the trigger device (1)
(10) and moving contact (11) are supported including contact, and moving contact (11) is inserted into contact support (10) and the both ends of moving contact (11)
The prominent two sides that (10) are supported in contact；
When the automatic change-over is in double gate-dividing states, one end of moving contact (11) is located at common load contact (6) and standby
With between power contact head (3), the other end is located between Alternative load contact (5) and common power contact head (4)；The automatic conversion
When switching in common power supply on state, moving contact (11) one end is connected with common power contact head (4), and the other end is born with common
Contact (6) are carried to be connected；When the automatic change-over is in backup power source on state, moving contact (11) one end and backup power source
Contact (3) is connected, and the other end is connected with Alternative load contact (6)；
The moving contact (11) under moving contact (11) and backup power source on state under common power supply on state is at X-type cross.
10. the contact system of automatic change-over according to claim 9, it is characterised in that: the trigger device (1)
It further include moving contact fixed link (12), moving contact fixed link (12) is inserted into contact and supports to support (10) on (10) and with contact
Axial parallel, limit cooperates in the middle part of moving contact fixed link (12) and moving contact (11).
11. automatic change-over contact system according to claim 8, it is characterised in that: the common load contact
(6), Alternative load contact (5) is located at trigger device (1) side, and common load contact (6) is located on Alternative load contact (5)
Side, common power contact head (4), backup power source contact (3) are located at trigger device (1) other side, and common power contact head (4) are located at
Below backup power source contact (3), the line of common load contact (6) and common power contact head (4), with Alternative load contact (5)
With the X-type cross that is wired to of backup power source contact (3), trigger device (1) is located at common load contact (6), backup power source touching
In the quadrangle space that head (3), common power contact head (4) and Alternative load contact (5) surround.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910035751.XA CN109755046A (en) | 2019-01-15 | 2019-01-15 | The contact system of static contact and automatic change-over |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910035751.XA CN109755046A (en) | 2019-01-15 | 2019-01-15 | The contact system of static contact and automatic change-over |
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| Publication Number | Publication Date |
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| CN109755046A true CN109755046A (en) | 2019-05-14 |
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ID=66405647
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|---|---|---|---|
| CN201910035751.XA Pending CN109755046A (en) | 2019-01-15 | 2019-01-15 | The contact system of static contact and automatic change-over |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563049A (en) * | 2020-06-08 | 2021-03-26 | 中车青岛四方机车车辆股份有限公司 | Transfer switch and circuit system |
| CN113690073A (en) * | 2021-10-27 | 2021-11-23 | 智慧(如皋)高压开关有限公司 | Isolating switch with self-cleaning function |
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| CN107946098A (en) * | 2017-12-28 | 2018-04-20 | 常熟开关制造有限公司(原常熟开关厂） | The contact system of switch |
| CN108493017A (en) * | 2018-05-21 | 2018-09-04 | 江苏泓光轨道设备有限公司 | Railway switch machine change-over switch group |
| CN209526012U (en) * | 2019-01-15 | 2019-10-22 | 浙江正泰电器股份有限公司 | The contact system of static contact and automatic change-over |
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| CN112563049A (en) * | 2020-06-08 | 2021-03-26 | 中车青岛四方机车车辆股份有限公司 | Transfer switch and circuit system |
| CN112563049B (en) * | 2020-06-08 | 2024-03-22 | 中车青岛四方机车车辆股份有限公司 | Change-over switch and circuit system |
| CN113690073A (en) * | 2021-10-27 | 2021-11-23 | 智慧(如皋)高压开关有限公司 | Isolating switch with self-cleaning function |
| CN113690073B (en) * | 2021-10-27 | 2021-12-24 | 智慧(如皋)高压开关有限公司 | Isolating switch with self-cleaning function |
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