CN209298720U - The connection structure and switchgear of moving contact and static contact - Google Patents

Abstract

The utility model discloses the connection structure and switchgear of a kind of moving contact and static contact, it is related to technical field of electric equipment, the connection structure of moving contact and static contact includes: contact box；The static contact being mounted on contact box；Moving contact including contact arm and contact members, contact members include: multiple first contacts, multiple the second wafers, support frame and elastic component unit, multiple first contacts and multiple the second wafers are circumferentially distributed assembly on the support frame, elastic component unit is set on the lateral wall of multiple first contacts and multiple the second wafers, first contact has the first guide part including the first guide surface towards the side of support frame, the second wafer has the second guide part including the second guide surface towards the side of support frame, there is the first default spacing not equal to 0 between first guide surface and the second guide surface.The application can satisfy the demand that dynamic and static contact is reliably connected tightening force, and can reduce occlusal contact condition pressure to maximum, in order to handcart shake into.

Description

The connection structure and switchgear of moving contact and static contact

Technical field

The utility model relates to technical field of electric equipment, in particular to the connection structure of a kind of moving contact and static contact and Switchgear.

Background technique

Medium Voltage Switchgear point has fixed and withdraw-type by the connection type of breaker, during withdraw-type switch cabinet occupies at present Compress switch the overwhelming majority of cabinet.Such cabinet type can by the propulsion of handcart, pull out, realize the moving contact and switchgear of breaker The connection and disconnection of static contact, complete the on and off of switchgear, have many advantages, such as that flexibility is good, maintenance is convenient.

Fig. 1 is the structural schematic diagram of contact members in the prior art, and Fig. 2 is that moving contact, static contact are in and connect in the prior art The schematic diagram of logical position, Fig. 3 is the schematic diagram that moving contact, static contact are in open position in the prior art, such as Fig. 1 to Fig. 3 institute Show, the connection structure of moving contact and static contact in usual medium voltage switchgear equipment includes contact box 1, contact arm 2, contact members 3, stationary contact First 4, wherein as shown in fig. 1, contact members 3 are usually made of contact 31, support frame 32, banding spring 33 moving contact 3, Ruo Gancheng Contact is compressed and is assemblied on support frame 32 through banding spring 33 and constitutes annular solid, is i.e. contact members 3；Contact arm 2 and moving contact 3 connect It is connected together and forms moving contact.It is connect when moving contact is pushed into contact box 1 with static contact 4, the two is in as shown in Figure 2 On-position；When moving contact pulls out contact box 1, the two is in open position as shown in Figure 3.

Utility model content

In order to overcome the drawbacks described above of the prior art, the technical problem to be solved is that provide for the utility model embodiment A kind of connection structure and switchgear of moving contact and static contact, can satisfy the demand that dynamic and static contact is reliably connected tightening force, Again can maximum reduce occlusal contact condition pressure, in order to handcart shake into.

The specific technical solution of the utility model embodiment is:

The connection structure of a kind of connection structure of moving contact and static contact, the moving contact and static contact includes:

Contact box；The static contact being mounted on the contact box；

Moving contact including contact arm and contact members, the moving contact can be connected to each other with the static contact, wherein the contact Part includes: multiple first contacts, multiple the second wafers, support frame and elastic component unit, multiple first contacts and multiple institutes State the second wafer and be circumferentially distributed and be assemblied on support frame as described above, the elastic component unit be set in multiple first contacts and So that first contact and the second wafer compress support frame as described above on the lateral wall of multiple the second wafers, described the One contact has the first guide part including the first guide surface towards the side of support frame as described above, and the second wafer is described in The side of support frame has the second guide part including the second guide surface, between first guide surface and second guide surface With the first default spacing for being not equal to 0.

In a preferred embodiment, first contact length on the axis direction of the contact arm is greater than described The second wafer length on the axis direction of the contact arm.

In a preferred embodiment, described quiet during the moving contact and the static contact are connected to each other Contact first connects with the second guide surface of the second wafer with the first guide face contacts of first contact, the static contact again Touching.

In a preferred embodiment, the contact members further include: multiple the third wafers, the third wafer assembly On support frame as described above, the third wafer towards the side of support frame as described above there is the third including third guide surface to be oriented to Portion has the second default spacing not equal to 0, the third guide surface between the third guide surface and first guide surface There is the third not equal to 0 to preset spacing between second guide surface.

In a preferred embodiment, the second wafer length on the axis direction of the contact arm is greater than described The third wafer length on the axis direction of the contact arm.

In a preferred embodiment, described quiet during the moving contact and the static contact are connected to each other Contact first connects with the second guide surface of the second wafer with the first guide face contacts of first contact, the static contact again Touching, the third guide face contacts of the last static contact and the third wafer.

In a preferred embodiment, first is offered on the lateral wall of first contact and the second wafer Groove, first groove are located at close to one end of the contact arm, include the first elastic component in the elastic component unit, and described the One elastic component is arranged in first groove.

In a preferred embodiment, second is offered on the lateral wall of first contact and the second wafer Groove, second groove are located remotely from one end of the contact arm, include the second elastic component in the elastic component unit, and described the Two elastic components are arranged in second groove.

In a preferred embodiment, third is offered on the inner sidewall of first contact and the second wafer Groove, support frame as described above are embedded in the third groove.

A kind of switchgear, the switchgear include: the connection structure such as any of the above-described moving contact and static contact.

The technical solution of the utility model have it is following significant the utility model has the advantages that

The connection structure of moving contact and static contact in the application is promoted in chassis vehicle into cabinet, and dynamic and static contact just contacts When, only deformation occurs for part in elastic component unit, so greatly reduces the propulsive force of chassis vehicle, is more advantageous to chassis vehicle Even running.For manual chassis vehicle, the application can more reduce the use of manpower, be more in line with ergonomic designs；For Electric chassis truck, the application then can reduce power of motor, reduce cost, reduce fever, to improve product operational reliability.

Referring to following description and accompanying drawings, the particular implementation of the utility model is disclosed in detail, specifies practical Novel principle can be in a manner of adopted.It should be understood that the embodiments of the present invention in range not thus by Limitation.In the range of the spirit and terms of appended claims, the embodiments of the present invention includes many changes, modifications With it is equivalent.The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.

Detailed description of the invention

Attached drawing described here is only used for task of explanation, and is not intended to limit in any way disclosed by the utility model Range.In addition, shape and proportional sizes of each component in figure etc. are only schematically, to be used to help the reason to the utility model Solution is not the specific shape and proportional sizes for limiting each component of the utility model.Those skilled in the art is practical new at this Under the introduction of type, various possible shapes and proportional sizes can be selected to implement the utility model as the case may be.

Fig. 1 is the structural schematic diagram of contact members in the prior art；

Fig. 2 is the schematic diagram that moving contact, static contact are in on-position in the prior art；

Fig. 3 is the schematic diagram that moving contact, static contact are in open position in the prior art；

Fig. 4 is the schematic diagram that moving contact, static contact are in on-position in the utility model embodiment；

Fig. 5 is the structural schematic diagram that contact and contact arm link together in the utility model embodiment；

Fig. 6 is the partial enlarged view of contact in the utility model embodiment.

The appended drawing reference of the figures above:

1, contact box；2, contact arm；3, contact members；31, contact；32, support frame；33, banding spring；35, the first contact； 351, the first guide part；3511, the first guide surface；36, the second wafer；361, the second guide part；3611, the second guide surface；37, First groove；38, the second groove；39, the first elastic component；310, the second elastic component；311, third groove；4, static contact.

Specific embodiment

In conjunction with the description of attached drawing and specific embodiment of the present invention, the utility model can be clearly understood Details.But specific embodiment of the present utility model described herein, it is only used for explaining the purpose of this utility model, without It can be understood as being limitations of the present invention in any way.Under the introduction of the utility model, technical staff is contemplated that Any possible deformation based on the utility model, these are regarded as belonging to the scope of the utility model.It needs to illustrate It is that when element is referred to as " being set to " another element, it can directly on the other element or there may also be placed in the middle Element.When an element is considered as " connection " another element, it can be directly to another element or can Centering elements can be existed simultaneously.Term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or Electrical connection, the connection being also possible to inside two elements can be directly connected, can also indirectly connected through an intermediary, For the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.Made herein Term " vertical ", " horizontal ", "upper", "lower", "left", "right" and similar statement simply to illustrate that mesh , it is not meant to be the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more Any and all combinations of relevant listed item.

The static contact 4 of withdraw type metal enclosed switch cabinet is typically mounted in epoxy resin contact box 1, and moving contact is by touching Arm 2 and contact members 3 are constituted, and 3 sets of contact members make contact members 3 and contact arm 2 outside contact arm 2, through the banding spring 33 in contact members 3 Close connection.By chassis vehicle (manually or electrically), moving contact enters in contact box 1 be engaged connecing with 4 outer surface of static contact Touching.Contact pressure between dynamic and static contact 4 depends on 33 characteristic of banding spring and spring deformation amount in contact members 3.

Present applicant is found in use: at runtime due to switchgear, can pass through thousands of peaces in circuit The rated current of training or up to tens of kilo-amperes even fault current of kilo-amperes up to a hundred, can generate huge electric power, may cause The separation that dynamic and static contact 4 is slidably connected, and then cause bigger failure.Therefore, the design of banding spring 33 must in contact members 3 The tightening force when operating normally and breaking down, which must be met, should ensure that being reliably connected for dynamic and static contact 4.But if tightening force is set Count excessively high, then chassis vehicle is run into cabinet until dynamic and static contact 4 is required when being exactly in contact with and being further engaged shakes into power mistake Greatly.If manual chassis vehicle, then needs the manpower of consumption excessively high, do not meet ergonomic designs；If electric chassis truck, then need to select With the motor of higher power, it is larger that this will lead to higher cost, calorific value, and relative reliability is caused to reduce.Therefore, it needs to design A kind of connection structure of new moving contact and static contact out, can satisfy the demand that dynamic and static contact 4 is reliably connected tightening force, Occlusal contact condition pressure can be reduced to maximum again, in order to shaking into so as to be advantageously applied to various remove for handcart In formula switchgear.

To solve the above-mentioned problems, applicant proposed the connection structure of a kind of moving contact and static contact, Fig. 4 is that this is practical Moving contact, static contact are in the schematic diagram of on-position in new embodiment, and Fig. 5 is contact and touching in the utility model embodiment The structural schematic diagram that arm links together, Fig. 6 is the partial enlarged view of contact in the utility model embodiment, such as fig. 4 to fig. 6 institute Show, the connection structure of moving contact and static contact may include: contact box 1；The static contact 4 being mounted on contact box 1；Including contact arm 2 and contact members 3 moving contact, moving contact can be connected to each other with static contact 4, wherein contact members 3 include: multiple first contacts 35, more A the second wafer 36, support frame 32 and elastic component unit, multiple first contacts 35 and multiple the second wafers 36 are circumferentially distributed dress It fits on support frame 32, elastic component unit is set on the lateral wall of multiple first contacts 35 and multiple the second wafers 36 so that One contact 35 and the second wafer 36 compress support frame 32, and it includes the first guiding that the first contact 35 has towards the side of support frame 32 First guide part 351 in face 3511, the second wafer 36 have the including the second guide surface 3611 towards the side of support frame 32 Two guide parts 361 have the first default spacing not equal to 0 between first guide surface 3511 and the second guide surface 3611.

As shown in Figure 4 and Figure 5, support frame 32 is annular in shape, and multiple first contacts 35 and multiple the second wafers 36 are circumferentially It is distributed and is assemblied in after compressing on support frame 32, offer third groove on the inner sidewall of the first contact 35 and the second wafer 36 311, support frame 32 is embedded in third groove 311, to prevent the first contact 35 and the second wafer 36 in the axis direction of contact arm 2 Upper sliding.

As shown in Figures 4 to 6, multiple first grooves 37 are offered on the lateral wall of the first contact 35 and the second wafer 36, It may include multiple first elastic components 39, multiple first bullets that first groove 37, which is located in one end of contact arm 2, elastic component unit, Property part 39 is successively set in multiple first grooves 37.First elastic component 39 can be banding spring 33.When the first elastic component 39 When opening, the opening diameter of annulus towards one end of contact arm 2 that the first contact 35 and the second wafer 36 are formed is capable of increasing, thus So that the first contact 35, the second wafer 36 and the lateral wall of contact arm 2 are mutually clamped, to realize the connection with contact arm 2.

As shown in Figures 4 to 6, multiple second grooves 38 are offered on the lateral wall of the first contact 35 and the second wafer 36, Multiple second grooves 38 are located remotely from one end of contact arm 2, include multiple second elastic components 310 in elastic component unit, and multiple second Elastic component 310 is successively set in multiple second grooves 38.Second elastic component 310 or banding spring 33.When the second bullet Property part 310 when opening, opening diameter of the annulus that the first contact 35 and the second wafer 36 are formed backwards to one end of contact arm 2 can increase Greatly, so that static contact 4 is inserted into inside the annulus formed to the first contact 35, the second wafer 36, to realize stationary contact First 4 with the connection of moving contact.The tightening force of elastic component unit can be calculated by the deformation of elastic component unit and characteristic, thus It can be made to fully meet the requirement being reliably connected between contact when switchgear is operated normally or broken down.

In this application, the contact of the first contact 35 and the second wafer 36 using two kinds of different sizes, 35 court of the first contact There is the first guide part 351 including the first guide surface 3511 to the side of support frame 32, the second wafer 36 is towards support frame 32 Side there is the second guide part 361 including the second guide surface 3611 so that the first guide surface 3511 is oriented to second There is the first default spacing not equal to 0 between face 3611.That is, the first guide surface 3511 and the second guide surface 3611 it Between have certain spacing.

For example, the first contact 35 length on the axis direction of contact arm 2 is greater than the second wafer 36 in the axis direction of contact arm 2 Upper length.The propulsive force that chassis vehicle is run into cabinet is positively correlated with the tightening force of elastic component unit always, as shown in Figures 4 to 6, During moving contact and static contact 4 are connected to each other, moving contact passes through contact box 1 and is deep into inside contact box 1.Contact members first The first guide surface 3511 of first guide part 351 of the first contact 35 in 3 is first in contact with the forward position slope surface of static contact 4, Under the action of propulsive force, certain occlusion is slowly carried out, in the characteristic timing of elastic component unit, the at this time propulsion of chassis vehicle Power depends on the first contact 35 to the deformation quantity of second elastic component of part 310 in outside in elastic component unit；When chassis vehicle continues After promoting into cabinet, the second guide surface 3611 of the second guide part 361 of the second wafer 36 in contact members 3 is to static contact 4 Forward position slope surface is in contact, and the propulsive force of chassis vehicle depends on the deformation quantity of all second elastic components 310 on the outside of contact part at this time； Then the first contact 35 and the second wafer 36 continue into on-position again, guarantee the effective of contact members 3 and 4 outer wall of static contact Contact.

The connection structure of moving contact and static contact in the application is promoted in chassis vehicle into cabinet, and dynamic and static contact 4 just contacts When, only deformation occurs for part in elastic component unit, so greatly reduces the propulsive force of chassis vehicle, is more advantageous to chassis vehicle Even running.For manual chassis vehicle, the application can more reduce the use of manpower, be more in line with ergonomic designs；For Electric chassis truck, the application then can reduce power of motor, reduce cost, reduce fever, to improve product operational reliability.

In a preferred embodiment, contact members 3 can also include: multiple the third wafers, and the third wafer is assemblied in On support frame 32, the third wafer has the third guide part including third guide surface, third guiding towards the side of support frame 32 There is the second default spacing not equal to 0 between face and the first guide surface 3511, third guide surface and the second guide surface 3611 it Between have not equal to 0 third preset spacing.Second default spacing is greater than third and presets spacing, that is to say, that the second wafer 36 Length is greater than the third wafer length on the axis direction of contact arm 2 on the axis direction of contact arm 2.

By the above-mentioned means, the other contact of more stages can be arranged in contact members 3, so that dynamic and static contact 4 just connects When touching, only deformation occurs for part in elastic component unit, with going deep into for dynamic and static contact 4 contact, 4 level-one grade of static contact and touching The contact of different stage is successively in contact in head 3, so that the part that deformation occurs in elastic component unit increases step by step, The propulsive force that so can further reduce chassis vehicle, so that the operation of chassis vehicle is more steady.

It also proposed a kind of switchgear in this application, switchgear includes: such as any of the above-described moving contact and static contact Connection structure.

Above-mentioned each embodiment in this specification is described in a progressive manner, identical between each embodiment Similar portion is cross-referenced, and what each embodiment stressed is and other embodiments difference.It discloses All articles and reference, including patent application and publication are hereby incorporated by by quoting for various purposes.Description combination Term " substantially by ... constitute " should include identified element, ingredient, component or step and essentially without influence should Other elements, ingredient, component or the step of combined basic novel feature.It is described here using term "comprising" or " comprising " Element, ingredient, component or step combination it is also contemplated that the implementation being made of substantially these elements, ingredient, component or step Mode.Here by using term " can with ", it is intended to which the described any attribute for illustrating that " can with " includes all is optional.It is more A element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Alternatively, single collection Multiple element, ingredient, component or the step of separation can be divided at element, ingredient, component or step.For describe element, The open "a" or "an" of ingredient, component or step is not said to exclude other elements, ingredient, component or step.

The foregoing is merely several embodiments of the utility model, although embodiment disclosed by the utility model is such as On, but the content is only to facilitate the embodiment for understanding the utility model and using, it is practical new to be not intended to limit this Type.Any those skilled in the art of the present invention are not departing from spirit and scope disclosed by the utility model Under the premise of, any modification and variation, but the patent of the utility model can be made in the formal and details of embodiment Protection scope must be still subject to the scope defined in the appended claims.

Claims (10)

1. the connection structure of a kind of moving contact and static contact, which is characterized in that the connection structure packet of the moving contact and static contact It includes:

Contact box；The static contact being mounted on the contact box；

Moving contact including contact arm and contact members, the moving contact can be connected to each other with the static contact, wherein the contact members packet It includes: multiple first contacts, multiple the second wafers, support frame and elastic component unit, multiple first contacts and multiple described Two contacts, which are circumferentially distributed, to be assemblied on support frame as described above, and the elastic component unit is set in multiple first contacts and multiple So that first contact and the second wafer compress support frame as described above, first touching on the lateral wall of the second wafer Piece has the first guide part including the first guide surface towards the side of support frame as described above, and the second wafer is towards the support The side of frame has the second guide part including the second guide surface, has between first guide surface and second guide surface The first default spacing not equal to 0.

2. the connection structure of moving contact according to claim 1 and static contact, which is characterized in that first contact is in institute It states length on the axis direction of contact arm and is greater than the second wafer length on the axis direction of the contact arm.

3. the connection structure of moving contact according to claim 1 and static contact, which is characterized in that in the moving contact and institute State during static contact is connected to each other, the static contact first with the first guide face contacts of first contact, the static contact Again with the second guide face contacts of the second wafer.

4. the connection structure of moving contact according to claim 1 and static contact, which is characterized in that the contact members are also wrapped Include: multiple the third wafers, the third wafer are assemblied on support frame as described above, the third wafer towards support frame as described above one Side has the third guide part including third guide surface, has between the third guide surface and first guide surface and is not equal to There is the default spacing of the second of 0 third not equal to 0 to preset spacing between the third guide surface and second guide surface.

5. the connection structure of moving contact according to claim 4 and static contact, which is characterized in that the second wafer is in institute It states length on the axis direction of contact arm and is greater than the third wafer length on the axis direction of the contact arm.

6. the connection structure of moving contact according to claim 5 and static contact, which is characterized in that in the moving contact and institute State during static contact is connected to each other, the static contact first with the first guide face contacts of first contact, the static contact Again with the second guide face contacts of the second wafer, finally the third guide surface of the static contact and the third wafer is connect Touching.

7. the connection structure of moving contact according to claim 1 and static contact, which is characterized in that first contact and institute It states and offers the first groove on the lateral wall of the second wafer, first groove is located at close to one end of the contact arm, the bullet Property part unit in include the first elastic component, first elastic component is arranged in first groove.

8. the connection structure of moving contact according to claim 1 and static contact, which is characterized in that first contact and institute It states and offers the second groove on the lateral wall of the second wafer, second groove is located remotely from one end of the contact arm, the bullet Property part unit in include the second elastic component, second elastic component is arranged in second groove.

9. the connection structure of moving contact according to claim 1 and static contact, which is characterized in that first contact and institute It states and offers third groove on the inner sidewall of the second wafer, support frame as described above is embedded in the third groove.

10. a kind of switchgear, which is characterized in that the switchgear includes: the moving contact as described in any in claim 1 to 9 With the connection structure of static contact.