CN204348581U - Isolating switch - Google Patents
Isolating switch Download PDFInfo
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- CN204348581U CN204348581U CN201420744086.4U CN201420744086U CN204348581U CN 204348581 U CN204348581 U CN 204348581U CN 201420744086 U CN201420744086 U CN 201420744086U CN 204348581 U CN204348581 U CN 204348581U
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- lid
- isolating switch
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Abstract
Isolating switch, comprises housing, and to be fixed in housing and the exposed handle in outside, moving contact component, is arranged on two binding posts and two main contacts of enclosure interior both sides.Described housing comprises base and lid; Described two binding posts and two main contacts are arranged on the both sides of base; One end of two main contacts is connected with two binding posts of base both sides respectively; Described moving contact component comprises the contact support and contact bridge that are connected with handle; Contact bridge is fixedly installed on contact and supports, two terminal contacts stretch out the both sides that contact supports and correspondingly with the contact of two main contacts of base both sides respectively to arrange; Handle can move up and down with moving contact support and makes the contact of two terminal contacts of contact bridge and two main contacts of base both sides and be separated the combined floodgate and separating brake that realize isolating switch.The utility model isolating switch compact conformation, linkage unit is few, simplifies the internal structure of isolating switch, improves efficiency of assembling, reduce production cost.
Description
Technical field
The utility model relates to Low Voltage Electrical Apparatus, particularly a kind of isolating switch.
Background technology
Low voltage isolation switch conducting system structure is normally made up of contact and contact bridge, and product drives contact bridge to move to contact by handle in making process, thus conducting system is connected.Switch touching header structure relative complex in industry, volume is comparatively large, and efficiency of assembling is low, materials'use rate is low, and contact is comparatively large in part course of processing technology difficulty, the careless slightly deviation that will cause accessory size of processing link, post-production part is easily out of shape; Meanwhile, this structure of contact terminal is also difficult to effectively fix it.And the handle of existing isolating switch adopts bonding method to indicate during the closed and disconnected of product and generally adopt hand paste, the low and sticking Quality quality of production efficiency differs; When adopting bat printing mode to indicate the closed and disconnected of product, the latch recess position of handle both sides is not easy to bat printing again, and the adhesive force of pad-transfer printing ink does not reach requirement yet.
Summary of the invention
The purpose of this utility model is the defect overcoming prior art, and provide a kind of simple and compact for structure, efficiency of assembling is high, the isolating switch that production cost is low.
For achieving the above object, the utility model have employed following technical scheme:
A kind of isolating switch, comprises housing, and to be fixed in housing and the exposed handle 3 in outside, moving contact component, is arranged on two binding posts 7 and two main contacts 8 of enclosure interior both sides, it is characterized in that: described housing comprises base 1 and lid 2; Described two binding posts 7 and two main contacts 8 are arranged on the both sides of base 1; One end of two main contacts 8 is connected with two binding posts 7 of base 1 both sides respectively; Described moving contact component comprises the contact be connected with handle 3 and supports 4 and contact bridge 6; Contact bridge 6 is fixedly installed on contact and supports on 4, and two terminal contacts stretch out contact and support that the both sides of 4 are corresponding with the contact of two main contacts 8 of base 1 both sides respectively and arrange; Handle 3 can move up and down with moving contact support 4 and makes the contact of two terminal contacts of contact bridge 6 and two main contacts 8 of base 1 both sides and be separated the combined floodgate and separating brake that realize isolating switch.
Further, described main contact 8 comprises one section of flat segments 81, one end of flat segments 81 is bent to form wiring section 82 to the side of flat segments 81, the other end of flat segments 81 is bent to form linkage section 84 to the same side, and linkage section 84 extends the contact section 83 parallel with flat segments 81 to the other end bending of flat segments 81.
Further, the wire frame that the flat segments 81 of described main contact 8 stretches into base side binding post 7 is connected with wire frame, and wiring section 82 stretches out wire frame, and the other end contact section 83 of two main contacts 8 is corresponding with the two ends of contact bridge 6 respectively to be arranged; The side that described base 1 and lid 2 both sides are positioned at binding post 7 is respectively equipped with the first limited impression 13 and the second limited impression 23 of the wiring section 82 of fixing main contact 8; The opposite side that described base 1 and lid 2 are positioned at binding post 7 is respectively equipped with the 3rd limited impression 14 and the 4th limited impression 24 of the flat segments 81 of fixing main contact 8.
Further, one end that described contact support 4 is connected with handle 3 is provided with joint pin 42, and the side that described handle 3 is connected with contact support 4 is provided with the mounting groove 323 coordinated with joint pin 42.
Further, described contact supports that 4 one end are provided with the linking arm 43 be connected with handle 3, linking arm 43 is provided with joint pin 42, described base 1 and lid 2 one end correspondence positions are provided with the first chute 16 that spacing linking arm 43 slides, described base 1 is respectively equipped with middle part correspondence position on lid 2 and moves up and down the identical sliding group of slats 12 in direction with contact support 4, contact supports 4 can slide in sliding group of slats 12, and described base 1 and lid 2 other end correspondence positions are provided with the 3rd chute 18 that spacing contact supports 4 other ends.
Further, described base 1 and lid 2 are respectively equipped with base handle installing rack 15 and the lid handle installing rack 25 of mounting handle 3, described base 1 and lid 2 are respectively equipped with the first spacing block set 11 and the second spacing block set 21 of restriction linking arm 43 movement, and the sidewall of the sidewall of described handle installing rack 15 and the first spacing block set 11 and lid handle installing rack 25 and the second spacing block set 21 form the first chute 16 that linking arm 43 slides jointly; Slide plate bar in the middle part of sliding group of slats 12 is lower than the slide plate bar of both sides, and middle part slide plate bar forms contact and supports 4 the second chutes 17 slided.
Further, also comprise the handle spring 5 be connected with handle 3, one end of described handle 3 motion arm 32 is provided with the spring fixed via 325 be connected with handle spring 5, and the other end of handle spring 5 is fixedly mounted in base 1.
Further, described moving contact component also comprises folded elastic sheet 9, and folded elastic sheet 9 comprises two elastic arms with certain angle; Described contact support 4 is provided with through hole 41, and described contact bridge 6 reaches through through hole 41 two ends the both sides that contact supports 4; Described folded elastic sheet 9 stretches in through hole 41, and folded elastic sheet 9 two elastic arms compress the inwall of contact bridge 6 and through hole 41 respectively.
Further, the side that the middle part of described contact bridge 6 is connected with an elastic arm of folded elastic sheet 9 is provided with the first projection 61, and the inwall that the through hole 41 of described contact support 4 is connected with another elastic arm of folded elastic sheet 9 is provided with the second projection 411; Two elastic arms of described folded elastic sheet 9 are respectively equipped with the fixing hole 91 be connected with the first projection 61 and the second projection 411.
Further, described handle 3 comprises the exposed push rod 31 in outside and is connected with push rod 31 one end and is arranged on the motion arm 32 of enclosure interior; Tow sides in the middle part of the motion arm 32 of described handle 3 are provided with base 1 and cover the connecting axle 326 that 2 pivotables are connected; Described base 1 and lid 2 are respectively equipped with base handle installing rack 15 and the lid handle installing rack 16 of mounting handle 3, and base handle installing rack 15 and the middle part of lid handle installing rack 25 are respectively equipped with the base holddown groove 151 and lid holddown groove 25 1 that are connected with connecting axle 326 pivotable.
The utility model isolating switch compact conformation, linkage unit is few, simplifies the internal structure of isolating switch, improves efficiency of assembling, reduce production cost.Particularly structure of contact terminal is simple, makes the current-carrying performance of material obtain best embodiment and use; The difficulty of processing of contact reduces greatly, can also improve the production efficiency of assembling employee simultaneously, greatly can reduce product cost.
Accompanying drawing explanation
Planar structure schematic diagram when Fig. 1 is the utility model isolating switch separating brake;
Planar structure schematic diagram when Fig. 2 is the utility model isolating switch combined floodgate;
Fig. 3 is the perspective view of the utility model isolating switch handle;
Fig. 4 is the perspective view of the utility model isolated switch main contact;
Fig. 5 is the perspective view that the utility model isolation switch contact is supported;
Fig. 6 is the perspective view that the support of the utility model isolation switch contact is connected with contact bridge;
Fig. 7 is the perspective view of the utility model isolating switch contact bridge;
Fig. 8 is the perspective view of another embodiment of the utility model isolating switch contact bridge;
Fig. 9 is the perspective view of the utility model isolating switch folded elastic sheet;
Figure 10 is the perspective view of the utility model isolating switch base;
Figure 11 is the perspective view of the utility model isolating switch lid.
Embodiment
Below in conjunction with the embodiment that accompanying drawing 1 to 11 provides, further illustrate the embodiment of the utility model isolating switch.The utility model isolating switch is not limited to the description of following examples.
As shown in Figure 1-2, the utility model isolating switch comprises the housing be made up of base 1 and lid 2, to be fixed in housing and the exposed handle 3 in outside, moving contact component, one end of the binding post 7 and two main contacts, 8, two main contacts 8 that are arranged on base 1 both sides is connected with the binding post 7 of base 1 both sides respectively.Described moving contact component comprises the contact be connected with handle 3 and supports 4 and contact bridge 6; Contact bridge 6 is fixedly installed on contact and supports on 4, and two terminal contacts stretch out contact and support that the both sides of 4 are corresponding with the contact of the main contact 8 of base 1 both sides respectively and arrange; Handle 3 can move up and down with moving contact support 4 and makes the contact of two terminal contacts of contact bridge 6 and two main contacts 8 of base 1 both sides and be separated the combined floodgate and separating brake that realize isolating switch.The utility model isolating switch compact conformation, linkage unit is few, simplifies the internal structure of isolating switch, improves efficiency of assembling, reduce production cost.
As shown in Fig. 1,2,4,10,11, described main contact 8 comprises one section of flat segments 81, one end of flat segments 81 is bent to form wiring section 82 to the side of flat segments 81, the other end of flat segments 81 is bent to form linkage section 84 to the same side, and linkage section 84 extends the contact section 83 parallel with flat segments 81 to the other end bending of flat segments 81; The wire frame that the flat segments 81 of main contact 8 stretches into base side binding post 7 is connected with wire frame, and wiring section 82 stretches out wire frame, and the other end contact section 83 of two main contacts 8 is corresponding with the two ends of contact bridge 6 respectively to be arranged.The side that described base 1 and lid 2 both sides are positioned at binding post 7 is respectively equipped with the first limited impression 13 and the second limited impression 23 of the wiring section 82 of fixing main contact 8; The opposite side that described base 1 and lid 2 are positioned at binding post 7 is respectively equipped with the 3rd limited impression 14 and the 4th limited impression 24 of the flat segments 81 of fixing main contact 8.During installation, the wiring section 82 of main contact 8 snaps in the first limited impression 13 and the second limited impression 23, and the flat segments 81 of main contact 8 snaps in the 3rd limited impression 14 and the 4th limited impression 24, completes effectively fixing two main contacts 8.The structure of contact terminal of the utility model isolating switch, structure is simple, makes the current-carrying performance of material obtain best embodiment and use; The difficulty of processing of contact reduces greatly, avoids the part deformation because processing post-processed occurs; The production efficiency of assembling employee can also be improved simultaneously; Particularly be applicable to 80A and following current specification product, greatly can reduce product cost.Meanwhile, the feeding that this simple structure is also more convenient for when assembling isolating switch product waits operation with installing to fix.
As Figure 1-3, described handle 3 comprises the exposed push rod 31 in outside and is connected with push rod 31 one end and is arranged on the motion arm 32 of enclosure interior; The motion arm 32 of described handle 3 is pivoted on housing, the two sides that motion arm 32 is connected with push rod 31 are for ease of the arcwall face 321 of bat printing, on arcwall face 321, bat printing has the mark representing on off state, and two shoulders of motion arm 32 are provided with and can coordinate the locking through hole 322 locked with housing.The bat printing region of handle 3 is set to arcwall face 321 by the utility model, makes handle 3 realize automation bat printing very easily, has reserved the locking through hole 322 for preventing product from closing a floodgate or disconnect with case lock under some test or service condition simultaneously.
As shown in Fig. 1,2,3,5,6, the tow sides of the motion arm 32 of described handle 3 are provided with base 1 and cover the connecting axle 326 that 2 pivotables are connected; Described base 1 and lid 2 are respectively equipped with base handle installing rack 15 and the lid handle installing rack 16 of mounting handle 3, and base handle installing rack 15 and the middle part of lid handle installing rack 25 are respectively equipped with the base holddown groove 151 and lid holddown groove 251 that are connected with connecting axle 326 pivotable.Connecting axle 326 is pivoted on housing by base holddown groove 151 and lid holddown groove 251.One end of described handle 3 motion arm 32 is provided with the spring fixed via 325 be connected with handle spring 5, the other end of handle spring 5 is fixedly mounted in base 1, when handle 3 separating brake, the closed and disconnected that handle spring 5 is contact provides the power of snap action, reduces the electrical arc erosion time of This move process.The side that the motion arm 32 of described handle 3 is connected with contact support 4 is provided with supports 4 mounting grooves be connected 323 with contact; One end that described contact support 4 is connected with handle 3 is provided with the joint pin 42 coordinated with mounting groove 323, handle 3 and contact support 4 are linked together by mounting groove 323 and joint pin 42 buckle, when handle 3 combined floodgate and separating brake, handle 3 moves up and down with moving contact support 4 and realizes being contacting and separating of contact.Cause part strength influenced in order to easy because of too thick when saving material and prevent injection moulding at inside formation bubble, described handle 3 tow sides are provided with multiple arc groove 324 around connecting axle.
As shown in figures 5-9, the side of described contact bridge 6 is provided with and supports with contact the buckle block 62 that the sidewall buckle of 4 is fixing.During installation, the other end of contact bridge 6 inserts contact and supports that in the through hole 41 of 4, buckle block 62 limits the installation site of contact bridge 62.The another kind of embodiment of contact bridge as shown in Figure 8, can arrange circular groove 63 or square groove at the reverse side medium position of contact bridge 6, what the sidewall that through hole 41 and contact bridge 6 connect can be corresponding arranged round bump or bumping square are with the stable connection both realizing.Described moving contact component also comprises folded elastic sheet 9, and folded elastic sheet 9 comprises two elastic arms with certain angle; Described contact support 4 is provided with through hole 41, and described contact bridge 6 reaches through through hole 41 two ends the both sides that contact supports 4; Described folded elastic sheet 9 stretches into through hole 41, and folded elastic sheet 9 two elastic arms compress the inwall of contact bridge 6 and through hole 41 respectively; The side that the middle part of described contact bridge 6 is connected with an elastic arm of folded elastic sheet 9 is provided with the first projection 61, and the inwall that the through hole 41 of described contact support 4 is connected with another elastic arm of folded elastic sheet 9 is provided with the second projection 411; Two elastic arms of described folded elastic sheet 9 are respectively equipped with the fixing hole 91 be connected with the first projection 61 and the second projection 411.The setting of folded elastic sheet 9, plays certain fixation to the contact bridge 6 be arranged in contact support 4, and folded elastic sheet 9 sets the elasticity excess of stroke of moving contact simultaneously, ensures the stable of the moving contact elasticity excess of stroke.During installation, one end of buckle block 62 is not first established by contact bridge 6 to insert the bottom being put in through hole 41 in the through hole 41 of contact support 4, then through hole 41 is inserted in one end closed for folded elastic sheet 9, until the fixing hole 91 of two of folded elastic sheet 9 elastic arms snaps in the first projection 61 and the second projection 411 respectively, achieve a butt joint tactile bridge 6 effectively fixing thus, and folded elastic sheet 9 provides the elasticity excess of stroke of moving contact simultaneously.
As shown in Fig. 1,2,3,4,5,6,10,11, described contact supports that 4 one end are provided with linking arm 43, described base 1 and lid 2 are respectively equipped with base handle installing rack 15 and the lid handle installing rack 25 of mounting handle 3, described base 1 and lid 2 are respectively equipped with the first spacing block set 11 and the second spacing block set 21 of restriction linking arm 43 movement, and the sidewall of the sidewall of described handle installing rack 15 and the first spacing block set 11 and lid handle installing rack 25 and the second spacing block set 21 form the first chute 16 that linking arm 43 slides jointly; Described base 1 is respectively equipped with middle part correspondence position on lid 2 and moves up and down the identical sliding group of slats 12 in direction with contact support 4, contact supports 4 can slide in sliding group of slats 12, and described base 1 and lid 2 other end correspondence positions are provided with the 3rd chute 18 that spacing contact supports 4 other ends.The sliding scale that first chute 16 and the 3rd chute 18 are supported from two ends restriction contact, offset when avoiding contact support to slide, sliding group of slats 12 can effectively reduce the frictional force that contact support is slided.Slide plate bar in the middle part of sliding group of slats 12 is lower than the slide plate bar of both sides, and middle part slide plate bar forms contact and supports 4 the second chutes 17 slided.During installation, linking arm 43 one end of described contact support 4 is placed in the first chute 16, and the other end of contact support 4 is shelved in the second chute 17.When handle 3 closes a floodgate, contact supports linking arm 43 slide downward in the first chute 16 of 4, and the other end of contact support 4 slides to the 3rd chute 18 by the second chute 17, during handle 3 separating brake, and counter motion.
As shown in Figure 2, when handle 3 closes a floodgate, the contact support 4 be connected with handle 3 side moves down, contact supports 4 to slide in sliding group of slats 12, the closed and disconnected that handle spring 5 is contact provides the power of snap action, contact support 4 drives connected contact bridge 6 to move down, and the contact on the contact of contact bridge 6 two ends and the contact of main contact 8 being arranged on base 1 both sides, realize the connection of electronic circuit.
The utility model provides a kind of simple and compact for structure, and efficiency of assembling is high, the isolating switch that production cost is low.The dependency structure of the utility model isolating switch also may be used in the middle of the products such as contactor.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection range of the present utility model.
Claims (10)
1. an isolating switch, comprise housing, to be fixed in housing and the exposed handle in outside (3), moving contact component, be arranged on two binding posts (7) and two main contacts (8) of enclosure interior both sides, it is characterized in that: described housing comprises base (1) and lid (2); Described two binding posts (7) and two main contacts (8) are arranged on the both sides of base (1); One end of two main contacts (8) is connected with two binding posts (7) of base (1) both sides respectively; Described moving contact component comprises the contact support (4) and contact bridge (6) that are connected with handle (3); Contact bridge (6) is fixedly installed in contact support (4), and two terminal contacts stretch out that the both sides of contact support (4) are corresponding with the contact of two main contacts (8) of base (1) both sides respectively to be arranged; Handle (3) can move up and down with moving contact support (4) and makes the contact of two terminal contacts of contact bridge (6) and two main contacts (8) of base (1) both sides and be separated the combined floodgate and separating brake that realize isolating switch.
2. isolating switch according to claim 1, it is characterized in that: described main contact (8) comprises one section of flat segments (81), one end of flat segments (81) is bent to form wiring section (82) to the side of flat segments (81), the other end of flat segments (81) is bent to form linkage section (84) to the same side, linkage section (84) extends the contact section (83) parallel with flat segments (81) to the other end bending of flat segments (81).
3. isolating switch according to claim 2, it is characterized in that: the wire frame that the flat segments (81) of described main contact (8) stretches into base side binding post (7) is connected with wire frame, wiring section (82) stretches out wire frame, and the other end contact section (83) of two main contacts (8) is corresponding with the two ends of contact bridge (6) respectively to be arranged; The side that described base (1) and lid (2) both sides are positioned at binding post (7) is respectively equipped with the first limited impression (13) and second limited impression (23) of the wiring section (82) of fixing main contact (8); The opposite side that described base (1) and lid (2) are positioned at binding post (7) is respectively equipped with the 3rd limited impression (14) and the 4th limited impression (24) of the flat segments (81) of fixing main contact (8).
4. isolating switch according to claim 1 and 2, it is characterized in that: one end that described contact support (4) is connected with handle (3) is provided with joint pin (42), the side that described handle (3) is connected with contact support (4) is provided with the mounting groove (323) coordinated with joint pin (42).
5. isolating switch according to claim 4, it is characterized in that: described contact support (4) one end is provided with the linking arm (43) be connected with handle (3), linking arm (43) is provided with joint pin (42), described base (1) and lid (2) one end correspondence position are provided with the first chute (16) that spacing linking arm (43) slides, described base (1) is respectively equipped with lid (2) upper middle part correspondence position and moves up and down the identical sliding group of slats (12) in direction with contact support (4), contact supports that (4) can in the upper slip of sliding group of slats (12), described base (1) and lid (2) other end correspondence position are provided with the 3rd chute (18) of spacing contact support (4) other end.
6. isolating switch according to claim 5, it is characterized in that: described base (1) and lid (2) are respectively equipped with base handle installing rack (15) and the lid handle installing rack (25) of mounting handle (3), described base (1) and lid (2) are respectively equipped with the first spacing block set (11) and second spacing block set (21) of restriction linking arm (43) movement, the sidewall of the sidewall of described handle installing rack (15) and the first spacing block set (11) and lid handle installing rack (25) and the second spacing block set (21) form the first chute (16) that linking arm (43) slides jointly, slide plate bar in the middle part of sliding group of slats (12) is lower than the slide plate bar of both sides, and middle part slide plate bar forms the second chute (17) that contact support (4) slides.
7. isolating switch according to claim 1 and 2, it is characterized in that: also comprise the handle spring (5) be connected with handle (3), one end of described handle (3) motion arm (32) is provided with the spring fixed via (325) be connected with handle spring (5), and the other end of handle spring (5) is fixedly mounted in base (1).
8. isolating switch according to claim 1, is characterized in that: described moving contact component also comprises folded elastic sheet (9), and folded elastic sheet (9) comprises two elastic arms with certain angle; Described contact support (4) is provided with through hole (41), and described contact bridge (6) reaches the both sides of contact support (4) through through hole (41) two ends; Described folded elastic sheet (9) is stretched in through hole (41), and folded elastic sheet (9) two elastic arms compress the inwall of contact bridge (6) and through hole (41) respectively.
9. isolating switch according to claim 8, it is characterized in that: the side that the middle part of described contact bridge (6) is connected with an elastic arm of folded elastic sheet (9) is provided with the first projection (61), the inwall that the through hole (41) of described contact support (4) is connected with another elastic arm of folded elastic sheet (9) is provided with the second projection (411); Two elastic arms of described folded elastic sheet (9) are respectively equipped with the fixing hole (91) be connected with the first projection (61) and the second projection (411).
10. the isolating switch according to claim 1 or 2 or 6, is characterized in that: described handle (3) comprises the exposed push rod in outside (31) and is connected with push rod (31) one end and is arranged on the motion arm (32) of enclosure interior; The tow sides at motion arm (32) middle part of described handle (3) are provided with base (1) and cover the connecting axle (326) that (2) pivotable is connected; Described base (1) and lid (2) are respectively equipped with base handle installing rack (15) and the lid handle installing rack (16) of mounting handle (3), and base handle installing rack (15) and the middle part of lid handle installing rack (25) are respectively equipped with the base holddown groove (151) and lid holddown groove (251) that are connected with connecting axle (326) pivotable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744086.4U CN204348581U (en) | 2014-12-01 | 2014-12-01 | Isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744086.4U CN204348581U (en) | 2014-12-01 | 2014-12-01 | Isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204348581U true CN204348581U (en) | 2015-05-20 |
Family
ID=53231833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420744086.4U Active CN204348581U (en) | 2014-12-01 | 2014-12-01 | Isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204348581U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108538671A (en) * | 2018-06-21 | 2018-09-14 | 柏法瑞电气（厦门）有限公司 | A kind of transfer switch |
-
2014
- 2014-12-01 CN CN201420744086.4U patent/CN204348581U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108538671A (en) * | 2018-06-21 | 2018-09-14 | 柏法瑞电气（厦门）有限公司 | A kind of transfer switch |
| CN108538671B (en) * | 2018-06-21 | 2024-02-23 | 柏法瑞电气（厦门）有限公司 | Power supply change-over switch |
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