CN208061878U - Switching device - Google Patents

Abstract

The utility model provides a kind of switching device, including：Insulation crust has leading-out terminal and at least two ends of incoming cables；First contact can be rotationally connected in the insulation crust, and first contact is connected with the leading-out terminal；At least two second contacts can be connected in the insulation crust to elastic rotation, and second contact is connected with the end of incoming cables, and second contact has the engaging member that can abut first contact at least two directions.The switching device of the utility model realizes the high safety and high reliability of conversion by the first contact of single driving conversion, while the high tolerance in short-term of product can be promoted by the engaging member of the second contact.

Description

Switching device

Technical field

The utility model is related to low voltage electrical apparatus technology field more particularly to a kind of switching devices.

Background technology

Change-over switch is the important electric elements in Low Voltage Electrical Apparatus, the switching being mainly used between two circuit powers, when When power supply breaks down all the way, change-over switch can go to another way power supply power supply, the normal operation of proof load.According to building Design specification requirement, it is exactly power supply switching that 1,2 grade of power load, which should use two-way or the above power supply power supply of two-way, change-over switch, Core, apply does not allow the important place having a power failure in fire-fighting, traffic, communication, metallurgy, chemical industry, weaving, oil, coal mine etc..

Existing change-over switch, Body switch generally use two groups of contact clapper-type structures, drive shaft to drive different touch Head realizes common and spare two-way power supply conversion, while chain using locking part progress between two groups of contact mechanisms, prevents same When connect two-way power supply and cause short trouble or accident of power supply.

For change-over switch, there is reliable conversion simultaneously, also will it is necessary to tolerance in short-term, temperature rise model, it is existing Some change-over switches have the following problems：1) dual power supply is turned using double contact clapper-type structures, switching reliability less than single driving Change contact；Interlocking mechanism needs to ensure that it is not in be also turned on two-way power supply, prevents the short circuit problem of two-way power supply, once Interlocking mechanism fails, it will two-way power supply short circuit occurs, causes system trip, the serious safety for threatening power supply system.2) often It is clapper-type contact with dual power supply contact, can not accomplishes that the high tolerance in short-term in national standard requires, usually be provided as nominal short-circuit limit Electric current processed theoretically can reach offer parameter, the breaker with different manufacturers and fusing with specified breaker and fuse Device will appear contact adhesion or the serious problem of scaling loss, serious shadow in use, there is technical parameter inaccuracy when serious Ring the reliability of power supply.

Utility model content

The purpose of this utility model is to provide a kind of switching device, by the first contact of single driving conversion, realizes conversion High safety and high reliability, while the high tolerance in short-term of product can be promoted by the engaging member of the second contact.

Following technical proposal can be used to realize in the above-mentioned purpose of the utility model：

The utility model provides a kind of switching device comprising：

Insulation crust is equipped with leading-out terminal and at least two ends of incoming cables thereon；

First contact can be rotationally connected in the insulation crust, and first contact is connected with the leading-out terminal；

At least two second contacts, can elastic rotation be connected in the insulation crust, second contact with it is described End of incoming cables is connected, and second contact has the engaging member that can abut first contact at least two directions.

In the embodiment of the utility model, first contact has at least two abutted against with the engaging member Contact site, the contact site are arranged at the end angle in first contact close to the engaging member.

In the embodiment of the utility model, at least two contact site includes the first contact site and the second contact Portion has first make contact, institute in the state that the switching device closes a floodgate between first contact site and the engaging member Stating has the second contact point, the rotation of relatively described second contact of the first make contact between the second contact site and the engaging member The torque that shaft is formed is equal to the torque that the rotary shaft of relatively described second contact of second contact point is formed.

In the embodiment of the utility model, the first make contact and second contact point are located at described the The both sides of the axis of one contact.

In the embodiment of the utility model, the engaging member includes at least two engaging portions, the engaging portion and institute Contact site is stated to abut against.

In the embodiment of the utility model, first contact has the spindle insulating part and contact knife being connected with each other, The spindle insulating part can be rotationally connected in the insulation crust, and one end of the contact knife can be connected to institute to elastics wing Spindle insulating part is stated, at least two contact site is in the other end of the contact knife.

In the embodiment of the utility model, the spindle insulating part has the receiving for placing at least one elastic component One end of slot, the contact knife is plugged in the holding tank and can be abutted at least one elastic component elasticity.

In the embodiment of the utility model, at least one elastic component includes the first elastic component and the second elasticity One end of part, the contact knife can be folded between first elastic component and second elastic component.

In the embodiment of the utility model, second contact is U-shaped contact or C-shaped contact.

In the embodiment of the utility model, rebound part is connected on second contact, the rebound part is connected to The insulation crust.

In the embodiment of the utility model, it is connected with flexible conductor between first contact and the leading-out terminal or turns Dynamic structure, is connected with the flexible conductor or the rotational structure between second contact and the end of incoming cables.

In the embodiment of the utility model, the flexible conductor is conductor made of being woven by multiply copper conductor.

In the embodiment of the utility model, the rotational structure has and connecting plate and is rotatably connected to described Connection conductor on connecting plate.

In the embodiment of the utility model, arc extinguishing structure is equipped between two second contacts being disposed adjacent.

The characteristics of switching device of the utility model and advantage are：

One, the switching device can abut the first contact at least two directions by the first contact on the second contact Engaging member structure so that Hall nurse power F1 and Hall nurse power caused by two contact points of the second contact and the second contact The torque that the rotary shaft of F2 and the second contact is formed is equal in magnitude, which can form stable contact with the second contact State remains turned on so that the switching device can be stablized, and high current by when in the first contact and the second contact Junction will not occur to beat relatively, cause big melting welding, make product failure.Therefore, the utility model is conducive to promote product Tolerance in short-term, and due to single driving contact rotation approach design using the first contact, improve the safety of switching device Property, prevent connect two-way power supply and caused by short circuit.

Two, the utility model uses modularized design, switching device to pass through the first contact and at least two second contacts Module coordinates, and can be used for single-phase, multiphase wiring system；Meanwhile the utility model can be additionally used in AC system, can be used for Straight-flow system, operation strategies are extensive.

Description of the drawings

It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.

Fig. 1 is the dimensional structure diagram of an embodiment of the switching device of the utility model.

Fig. 2 is the front view of an embodiment of the switching device of the utility model.

Fig. 3 is the front view of first contact of the utility model.

Fig. 4 is the A of Fig. 3 to sectional view.

Fig. 5 is the structural schematic diagram of first contact and the second contact of the utility model.

Fig. 6 is the front view of another embodiment of the switching device of the utility model.

Fig. 7 is the front view of the switching device of the utility model of embodiment illustrated in fig. 1, show in figure the first contact with State when second contact initially contacts.

Fig. 8 is that the switching device of the utility model is in the front view of non-"on" position.

Fig. 9 is the structural schematic diagram of the rotational structure of the utility model.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.

As depicted in figs. 1 and 2, the utility model provides a kind of switching device comprising insulation crust 1, the first contact 2 With at least two second contacts 3, wherein：Leading-out terminal 11 and at least two ends of incoming cables 12 are installed on insulation crust 1；First contact 2 can rotationally be connected in the insulation crust 1, and first contact 2 is connected with the leading-out terminal 11；At least two second touch First 3 can be connected in the insulation crust 1 to elastic rotation, and second contact 3 is connected with the end of incoming cables 12, and described second Contact 3 has the engaging member 31 that can abut first contact 2 at least two directions.

Specifically, there is insulation crust 1 hollow cavity 13, each component in switching device to be located in hollow cavity 13, the insulation There are one leading-out terminal 11 and at least two ends of incoming cables 12 for installation on shell 1.In the present invention, a leading-out terminal 11 and at least Two ends of incoming cables 12 are separately positioned on the opposite sides of insulation crust 1, according to actual needs, end of incoming cables 12 can be two, Three or more, are not limited herein.In the present embodiment, end of incoming cables 12 is two, and two about 12 ends of incoming cables are arranged in The side of insulation crust 1, leading-out terminal 11 are one, which is mounted on the other side of insulation crust 1.

First contact 2 is rotatably arranged in the hollow cavity 13 of insulation crust 1, which can be at least one A contact of second contact 3 or separation, the power supply to realize and not go the same way is powered or the operation of power-off.

Specifically, first contact 2 has the spindle insulating part 21 being connected with each other and contact knife 22,21 energy of spindle insulating part It is rotationally connected in insulation crust 1, one end of the contact knife 22 can be connected to the spindle insulating part 21 to elastics wing.Such as Fig. 3 Shown in Fig. 4, the clamping part 212 which has shaft 211 and be socketed in outside shaft 211, the shaft 211 is greatly Body is in oblate bar shape, and in the present embodiment, shaft 211 is integrally formed with clamping part 212, certainly, in other examples, Shaft 211 seperated can be also molded with clamping part 212, is not limited herein, the middle part of shaft 211 is equipped with axis pin 213, axis pin 213 are fixed in insulation crust 1, which can rotate relative to axis pin 213, to drive clamping part 212 to rotate together.

Further, which also has the holding tank 215 for placing at least one elastic component 214, the contact knife 22 one end is plugged in holding tank 215 and is abutted with 214 elasticity of at least one elastic component.Specifically, one end of the clamping part 212 It is formed with the opening for 22 grafting of contact knife, which is formed between one end of clamping part 212 and shaft 211, the receiving Slot 215 and opening in communication, and at least one elastic component 214 is equipped in holding tank 215.In the present embodiment, elastic component 214 is Spring leaf, at least one elastic component 214 include the first elastic component 2141 and the second elastic component 2142, first elastic component 2141 It is respectively provided in holding tank 215 with the second elastic component 2142, when contact knife 22 is inserted into the opening of clamping part 212 and stretches into holding tank After 215, it is respectively formed between the both sides and the opening of clamping part 212 of the contact knife 22 and has the gap 216, and in holding tank 215 The both sides of contact knife 22 be respectively equipped with first elastic component 2141 and the second elastic component 2142, when contact knife 22 and the second contact 3 connect After logical, at least one elastic component 214 acts on contact knife 22 namely first elastic component 2141 and/or the second elastic component 2142 It is abutted with 22 elasticity of contact knife, to opposite 21 elastics wing of spindle insulating part of 22 energy of contact knife, and then in the first contact 2 and second Contact 3 provides necessary contact during contacting.

Second contact 3 is rotatably arranged in the hollow cavity 13 of insulation crust 1, in the present invention, switch dress Tool is set there are two the second contact 3, two the second contacts 3 are located at side and setting side by side up and down in insulation crust 1；This second touch First 3 have the engaging member 31 that can abut the first contact 2 at least two directions, in the state that switching device closes a floodgate, the knot Component 31 is in contact with the contact knife 22 of the first contact 2.

Specifically, above-mentioned first contact 2 has at least two contact sites 221 abutted against with the engaging member 31, the contact Portion 221 is arranged at the end angle in the first contact 2 close to engaging member 31 namely at least two contact site 221 is located at contact knife 22 The other end.The engaging member 31 includes at least two engaging portions 311, and at least two engaging portions 311 can be supported at least two directions Connect at least two contact sites 221.

In the present embodiment, which includes the first contact site and the second contact site, the engaging member 31 With two basic change portion 311, there is first make contact between one of first contact site and engaging member 31 engaging portion 311 2211, there is the second contact point 2212, first contact between second contact site and another engaging portion 311 of engaging member 31 The torque that point 2211 is formed relative to the rotary shaft 32 of the second contact 3 is equal to rotation of second contact point 2212 relative to the second contact 3 The torque that axis 32 is formed.

Shown in Fig. 5, when the engaging member 31 of the contact knife 22 of the first contact 2 and the second contact 3 is steadily contacted, Contact knife 22 is formed with engaging member 31 there are two contact point namely first make contact 2211 and the second contact point 2212, is connect first The Hall nurse power generated on contact 2211 is F1, is F2, and Hall nurse power F1 in the Hall nurse power that the second contact point 2212 generates The distance of the rotary shaft 32 of the second contact of distance 3 is L1, and the distance of the rotary shaft 32 of the second contact of Hall nurse power F2 distances 3 is L2 then has F1 × L1=F2 × L2.The utility model adopts the structure, the guarantor that the first contact 2 and the second contact 3 can be made to stablize On-state is held, is resistant in short-term to achieve the effect that improve.In the present invention, which connects with second Contact 2212 is located at the both sides of the axis of the first contact 2, in a possible embodiments, the first make contact 2211 and second The asymmetric setting of axis of opposite first contact 2 of contact point 2212, certainly, in a further embodiment, first make contact 2211 It can also be symmetrical arranged with the axis of 2212 opposite first contact 2 of the second contact point, not be limited herein.

In actual design, the structure of switching device should be adjusted, ensures F1 × L1 >=F2 × L2 as possible, makes the second contact The overall moment vector of 3 (the second contacts 3 for being located at the top of insulation crust 1) is at clockwise or be 0, or the second contact 3 is made (to be located at Second contact 3 of the lower section of insulation crust 1) overall moment vector at counterclockwise or be 0, and then ensure switching device contact condition It is firm, i.e. the overall moment vector of the second contact 3 is 0, promotes the high tolerance in short-term of product.

In the embodiments of the present invention, as depicted in figs. 1 and 2, which is U-shaped contact；Alternatively, another In outer embodiment, as shown in fig. 6, second contact 3 is C-shaped contact.Second contact 3 of the utility model is not limited to above-mentioned Two kinds of embodiments, as long as the engaging member 31 of second contact 3 can abut the first contact 2 at least two directions, herein It is not limited.

In the embodiment of the utility model, shown in Fig. 1, Fig. 2 and Fig. 7, connected on second contact 3 There are rebound part 33, the rebound part 33 to be connected to insulation crust 1.

Specifically, the rebound part 33 is torsional spring, one end of torsional spring is connected on insulation crust 1, and the other end is connected in the The side of two contacts 3 so that the second contact 3 can Self-resetting so that the engaging member 31 of the second contact 3 is towards the first contact 2 22 end of contact knife.Further, fixing axle 34 is further fixed in insulation crust 1, the other side of the second contact 3 is connected to In fixing axle 34.During the first contact 2 of switching device and the second 3 disjunction of contact, under the action of springing back part 33, the Two contacts 3 are rotated around rotary shaft 32, until being limited in fixing axle 34.In the process, the first contact 2 and the second contact 3 be simultaneously Movement, the direction of motion is opposite, due to the rotation of the first contact 2, the second contact 3, can accelerate the breaking course of switching device, favorably In the breaking capacity of switching device, to the performance of lifting switch device.

Before switching device enters "on" position, as shown in figure 8, the switching device is in bifurcation state (fire fighting state) When, the first contact 2 is in horizontality, and the end of contact knife 22 is located between two the second contacts 3, and the second contact 3 is in certainly Reset state, the end of opening direction first contact 2 of direction in two basic change portion 311.When switching device is closed a floodgate, First contact 2 rotates under the action of operating mechanism, and the contact knife 22 of the first contact 2 is contacted with one of them second contact 3, please be joined It reads shown in Fig. 7, the engaging member 31 of second contact 3 turns to the engaging portion of the 3 direction side of the second contact close to the first contact 2 311 are equipped with the inclined surface 312 slid into convenient for the contact knife 22 of the first contact 2, when the knot of the first contact 2 rotation to second contact 3 After component 31, under the action of inclined surface 312, engaging member 31 that the contact knife 22 of the first contact 2 can smoothly with the second contact 3 In conjunction with later, under the function of current for being passed through the first contact 2 and the second contact 3, to ensure the first contact 2 and the second contact 3 Two contact points namely first make contact 2211 and the second contact point 2212, generated Hall nurse power F1 and Hall nurse power F2 The torque formed with the rotary shaft 32 of the second contact 3 is equal in magnitude, which will continue to rotate, until the first contact 2 with Second contact 3 forms stable contact condition, and the switching device can be stablized and remain turned at this time, and when high current passes through It will not occur to beat relatively in the junction of the first contact 2 and the second contact 3, cause big melting welding, make product failure.Therefore, The utility model is conducive to promote product tolerance in short-term, and due to the hilted broadsword using the first contact 2 and two the second contacts 3 Double-throw structure can ensure that the common spare state for being also turned on short circuit can not occur in product, to promote the safety of product Energy.

An embodiment according to the present utility model, flexible conductor 111 is connected between first contact 2 and leading-out terminal 11 Or rotational structure 4, flexible conductor 111 or rotational structure 4 are connected between second contact 3 and end of incoming cables 12.

In a feasible embodiment, which is conductor made of being woven by multiply copper conductor.

In another feasible embodiment, as shown in figure 9, the rotational structure 4 has connecting plate 41 and is rotatably coupled Connection conductor 42 on connecting plate 41, which is connected to connecting plate 41 by shaft 43, and is covered in the shaft 43 Equipped with compression spring 44, so that the connection conductor 42 can be set to connecting plate 41 to elastic rotation.Wherein, which is used for It is connected with leading-out terminal 11 or end of incoming cables, the connection conductor 42 with the first contact 2 or the second contact 3 for being connected.

An embodiment according to the present utility model, as shown in Figure 1, Figure 2, shown in Fig. 6, Fig. 7 and Fig. 8, two be disposed adjacent Arc extinguishing structure 5 is equipped between a second contact 3, which is arranged in insulation crust 1.The arc extinguishing structure 5 is for extinguishing The electric arc that first contact 2 is connected with the second contact 3 and the process of breaking current generates.

The foregoing is merely several embodiments of the utility model, and those skilled in the art is according to disclosed in application documents Content can carry out the utility model embodiment spirit and scope of the various changes or modifications without departing from the utility model.

Claims (14)

1. a kind of switching device, which is characterized in that including：

Insulation crust is equipped with leading-out terminal and at least two ends of incoming cables thereon；

First contact can be rotationally connected in the insulation crust, and first contact is connected with the leading-out terminal；

At least two second contacts can be connected in the insulation crust to elastic rotation, second contact and the inlet wire End is connected, and second contact has the engaging member that can abut first contact at least two directions.

2. switching device as described in claim 1, which is characterized in that first contact has to be abutted against with the engaging member At least two contact sites, the contact site is arranged at the end angle in first contact close to the engaging member.

3. switching device as claimed in claim 2, which is characterized in that at least two contact site include the first contact site and Second contact site has first in the state that the switching device closes a floodgate between first contact site and the engaging member Contact point has the second contact point, the first make contact relatively described the between second contact site and the engaging member The torque that the rotary shaft of two contacts is formed is equal to the torque that the rotary shaft of relatively described second contact of second contact point is formed.

4. switching device as claimed in claim 3, which is characterized in that the first make contact is distinguished with second contact point Positioned at the both sides of the axis of first contact.

5. switching device as claimed in claim 2, which is characterized in that the engaging member includes at least two engaging portions, described Engaging portion is abutted against with the contact site.

6. switching device as claimed in claim 2, which is characterized in that first contact has the spindle insulating being connected with each other Part and contact knife, the spindle insulating part can be rotationally connected in the insulation crust, and one end of the contact knife can elastics wing Ground is connected to the spindle insulating part, and at least two contact site is in the other end of the contact knife.

7. switching device as claimed in claim 6, which is characterized in that the spindle insulating part, which has, places at least one elasticity One end of the holding tank of part, the contact knife is plugged in the holding tank and can be abutted at least one elastic component elasticity.

8. switching device as claimed in claim 7, which is characterized in that at least one elastic component include the first elastic component and One end of second elastic component, the contact knife can be folded between first elastic component and second elastic component.

9. switching device as described in claim 1, which is characterized in that second contact is U-shaped contact or C-shaped contact.

10. switching device as described in claim 1, which is characterized in that it is connected with rebound part on second contact, described time Bullet part is connected to the insulation crust.

11. switching device as described in claim 1, which is characterized in that connected between first contact and the leading-out terminal There are flexible conductor or rotational structure, the flexible conductor or rotation knot are connected between second contact and the end of incoming cables Structure.

12. switching device as claimed in claim 11, which is characterized in that the flexible conductor is to be woven by multiply copper conductor Conductor.

13. switching device as claimed in claim 11, which is characterized in that the rotational structure is with connecting plate and rotatably Ground is connected to the connection conductor on the connecting plate.

14. switching device as described in claim 1, which is characterized in that set between two second contacts being disposed adjacent There is arc extinguishing structure.