CN205564550U - Moving contact mechanism and isolator - Google Patents

Abstract

Moving contact mechanism and isolator, moving contact mechanism include the contact support, and the contact bridge passes through the spring mounting on the contact is supported, the spring be the slice spring of S -shaped, the contact support on be provided with the logical groove of installation slice spring and contact bridge, the contact bridge passes logical groove, the slice spring butt of S -shaped will contact bridge elastic fixation between the bridge leading to the groove and contact. The utility model discloses an isolator has above -mentioned moving contact mechanism. The structure of the slice spring through adopting the S -shaped, the user can effectively prevent the upset of contact bridge and the lateral shifting that are caused by the elastic deformation of slice spring to can effectively improve the electric property and the life of movable contact and stationary contact.

Description

Dynamic contact mechanism and disconnecting switch

Technical field

This utility model belongs to Low Voltage Electrical Apparatus, relates to a kind of dynamic contact mechanism and has this dynamic contact mechanism Disconnecting switch.

Background technology

Breakpoint formula disconnecting switch generally uses double-break bridging contact system, including being arranged in switch base Two stationary contacts, its dynamic contact mechanism is mainly by spring, moving contact component (contact bridge and be arranged on contact bridge On two movable contacts) and contact support composition, between contact support and contact bridge use spring transmission be connected, Contact is supported to be moved linearly by described spring actuated contact bridge, and the rectilinear movement of contact bridge drives thereon Movable contact and stationary contact Guan Bi/disjunction.Used spring generally uses helical spring, and acting as of it is fixing dynamic Contact assembly, provides the end pressure between dynamic and static contact system when product closes a floodgate.But helical spring for The rectilinear movement of contact bridge does not have guide function, therefore must arrange in contact support complexity for guiding The guiding mechanism of contact bridge rectilinear movement, thus cause structure more complicated.The spring having at present is also adopted by leaf spring, Springs includes U-shaped shell fragment or V-arrangement shell fragment, during its elastic deformation, inevitably grasps Make to cause contact bridge upset and traversing power and action, thus cause between the movable contact at two ends with the connecing of stationary contact Touch pressure (end pressure) occurs uneven, unequal, easily cause between movable contact with the contacting not of stationary contact Good, electrical wear degree is inconsistent, affects electric property and the service life of product.Existing springs is many Using " V " character form structure of generally isosceles trapezoid, this springs mainly exposes following Not enough: the first, the best to the fixed performance of moving contact component, moving contact component has one in contact support Fixed is the most dynamic, and when closing a floodgate, the contact of dynamic and static contact system can not centring position so to make product.The Two, owing to, during shell fragment elastic deformation, two gripper shoe abutted against with contact bridge has relative In the transverse shifting of contact bridge, this transverse shifting can produce the horizontal frictional force acting on contact bridge, and this rubs Wiping power between movable contact with the contacting of stationary contact, also can there is disadvantageous interference and impact, when making product close a floodgate Between the contact at moving contact component two ends, end pressure there will be imbalance, and product so can be made to carry out electric life etc. During operation, the electrical wear degree of contact is inconsistent, can reduce the electric property of product, and dynamic and static contact system Between contact whether well the electric property of product is affected the biggest.3rd, it is determined due to its principle Static connection can not be realized with contact bridge, therefore must be provided with between pressing piece (contact support) and contact bridge Guide the guiding mechanism of contact bridge rectilinear movement, thus cause structure relative complex.

Utility model content

The purpose of this utility model is to overcome the defect of prior art, it is provided that the moving contact that a kind of reliability is high Mechanism, contact bridge can preferably be fixed on contact and support, and can make the contact at dynamic and static contact system two ends Pressure keeps balance, and this utility model also provides for a kind of disconnecting switch with described dynamic contact mechanism, can It is effectively improved the electric property with disconnecting switch product and reliability.

For achieving the above object, this utility model adopts the technical scheme that

A kind of dynamic contact mechanism, supports 1 including contact, and contact bridge 2 is arranged on contact by spring and supports on 1, Described spring is the springs 3 of S-shaped, and described contact support 1 is provided with installation springs 3 He The groove 10 of contact bridge 2, contact bridge 2 is through groove 10, and the springs 3 of S-shaped is connected to groove 10 He By contact bridge 2 flexible fastening between contact bridge 2.

Preferably, described springs 3 is by the first linkage section 31, resilient deformation section the 33, second linkage section The 32 symmetrical forms being in turn connected into S-shaped；First linkage section 31 and second of described springs 3 Linkage section 32 is respectively straight lamellar, the lamellar that resilient deformation section 33 bends for S-shaped.

Preferably, the global shape of the resilient deformation section 33 of described springs 3 is the central point with S-shaped Point symmetry shape centered by 30.

Preferably, the first linkage section 31 of described springs 3 is parallel to each other with the second linkage section 32.

Preferably, the first linkage section 31 of described springs 3 is provided with the first connecting hole 3a, second The second connecting hole 3b it is provided with on linkage section 32, and, in the first connecting hole 3a and the second connecting hole 3b Heart line A-A is through the central point 30 of the resilient deformation section 33 of springs 3.

Preferably, it is provided with, in the groove 10 of described contact support 1, the installation coordinated with the first linkage section 31 Face 11 and the confined planes 12 faced toward with this installed surface 11；The of described installed surface 11 and springs 3 One linkage section 31 abuts, and the second linkage section 32 of described springs 3 abuts with contact bridge 2, described Contact bridge 2 abut cooperation with described confined planes 12；It is provided with on described installed surface 11 with first even Connect the first connection bump 1a that hole 3a coordinates, described contact bridge 2 is provided with and joins with the second connecting hole 3b The second connection bump 2b closed.

Preferably, the groove 10 top sidewall of described contact support 1 is provided with stopper slot 13, stopper slot 13 The width of width and springs 3 suitable, and less than the width of contact bridge 2；Springs 3 is connected to In stopper slot 13.

Preferably, be provided with in described stopper slot 13 that the first connecting hole 3a with the first linkage section 31 coordinates One connection bump 1a；The guiding surface 14 being easy to springs 3 it is provided with in the both sides of the first connection bump 1a.

Preferably, described contact support 1 is provided with multiple contact bridge 2, the springs of multiple S-shaped 3 points Multiple contact bridges 2 are not arranged on contact support on 1.

This utility model also provides for a kind of disconnecting switch, including shell block, be fixedly mounted in shell block two quiet Contact, also includes dynamic contact mechanism of the present utility model, and contact bridge 2 two ends of dynamic contact mechanism are provided with and two Two movable contacts that individual stationary contact is correspondingly arranged, the contact support 1 of dynamic contact mechanism back and forth can be slided in shell block Moving is contacting and separating with two stationary contacts while of making two movable contacts realizes the break-make of circuit.

Dynamic contact mechanism of the present utility model and disconnecting switch, by using the structure of the springs 3 of S-shaped, User can effectively prevent the contact bridge 2 caused by the elastic deformation of springs 3 from overturning and transverse shifting, from And movable contact and the electric property of stationary contact and service life can be effectively improved.Can be used for disconnecting switch, contact In the breakpoint formula electric equipment products such as device, relay, the disconnecting switch with this dynamic contact mechanism can be effectively improved and produce The reliability of product and safe class.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is described in further detail, from accompanying drawing illustrated embodiment Description in can be seen more clearly from advantage of the present utility model and feature, wherein:

Fig. 1 is the perspective view of the dynamic contact mechanism of disconnecting switch of the present utility model.

Fig. 2 is the section plan of the dynamic contact mechanism shown in Fig. 1.

Fig. 3 is the section plan of the springs shown in Fig. 1.

Fig. 4 is Fig. 3 left side view.

Fig. 5 is the section plan of the contact bridge shown in Fig. 1.

Fig. 6 is the operation principle floor map of the springs shown in Fig. 1.

Fig. 7 is the B close-up schematic view of Fig. 2.

Detailed description of the invention

Below in conjunction with the dynamic contact mechanism of the embodiment disconnecting switch that accompanying drawing 1 to 7 provides, further illustrate this The detailed description of the invention of the dynamic contact mechanism of utility model.Dynamic contact mechanism of the present utility model is not limited to following The description of embodiment.

In the embodiment shown in Fig. 1, a kind of dynamic contact mechanism for disconnecting switch, props up including contact Holding 1, contact bridge 2 is arranged on contact by spring and supports that on 1, described spring is the springs 3 of S-shaped, Being provided with installation springs 3 and the groove 10 of contact bridge 2 in described contact support 1, contact bridge 2 is worn Crossing groove 10, the springs 3 of S-shaped is connected to elastic for contact bridge 2 solid between groove 10 and contact bridge 2 Fixed.Two stationary contact (not shown)s, connecing of dynamic contact mechanism it is installed with in the shell block of disconnecting switch Touch bridge 2 two ends and be provided with two movable contacts 21,22 being correspondingly arranged with two stationary contacts, touching of dynamic contact mechanism Head is supported 1 can reciprocatingly slide in shell block to make two movable contacts be contacting and separating with two stationary contacts realization simultaneously The break-make of circuit, forms the double-break bridging contact system of disconnecting switch.The springs 3 of described S-shaped is used In fixing contact bridge 2 and realize the elastic excess of stroke and connect, when being equipped with contact bridge 2 and contact support, S-shaped Springs 3 produced power when deformation is vertical with moving contact component, and it is fixed with moving contact component to produce The inconsistent component in direction, position is conducive to the fixing of moving contact component；Also can guarantee that the dynamic and static contact system of product The end pressure balance of contact point, it is to avoid disconnecting switch product carries out a certain terminal contacts during the operations such as electric life Excessive damage, is conducive to improving the electric property of this series products.In contrast than, used springs is Conventional " V " character form structure, can produce the component inconsistent with moving contact component orientation when deformation, Affect the fixing of moving contact component, and make the contact pressure imbalance of its two ends contact position.

The structure design of springs of the present utility model is its a useful feature.Specifically, sheet Shape spring 3 is in turn connected into S-shaped by the first linkage section 31, resilient deformation section the 33, second linkage section 32 Symmetrical form.This S-shaped structure can have multiple concrete shape structure, a kind of preferably shape and structure such as Fig. 3 Shown in Fig. 6, the first linkage section 31 of described springs 3 and the second linkage section 32 are the most straight Lamellar, the lamellar that resilient deformation section 33 bends for S-shaped.First linkage section 31, resilient deformation section 33, Second linkage section 32 is to be bent by the elastomeric material of same straight lamellar, therefore, said Connection refer to the linking between three kinds of shape and structures of same springs 3, say, that lamellar bullet Spring 3 includes: the first linkage section 31 of a straight lamellar, and with contact, it is for supporting that 1 is connected, therefore claim For linkage section；The resilient deformation section 33 of one lamellar bending to S-shaped, it is used for elastic deformation, therefore claims For resilient deformation section, one end of this deformation section connects with one end of the first linkage section 31；One straight sheet Second linkage section 32 of shape, it is for being connected with contact bridge 2, therefore referred to as linkage section, the one of this linkage section End connects with the other end of resilient deformation section 33.

Another useful feature of the present utility model is the first linkage section 31, resilient deformation section the 33, second company The shaped position structure of the section of connecing 32, it can have various ways.A kind of preferred shape of resilient deformation section 33 Structure is shown in Fig. 3, Fig. 6 and Fig. 7: as described in the global shape of resilient deformation section 33 with in S-shaped Point symmetry shape centered by heart point 30, the i.e. shape of the resilient deformation section 33 of the S-shaped of central point 30 both sides Mutually point symmetry.A kind of first linkage section 31 and preferred shape and structure such as Fig. 3, figure of the second linkage section 32 Shown in 6 and Fig. 7: the first described linkage section 31 is parallel to each other with the second linkage section 32.Use such knot The advantage of structure design is, the elastic deformation of springs 3 will not produce the upset causing the second linkage section 32 With traversing power and action, it may be assumed that can effectively guarantee that the contact bridge 2 being connected with the second linkage section 32 will not produce Upset is with traversing, and the second linkage section 32 does not the most exist the horizontal frictional force acting on contact bridge 2.

Another useful feature of the present utility model is the force structure on springs 3, and it relates to sheet Shape spring 3 respectively with contact support 1, the attachment structure of contact bridge 2.A kind of preferably mode such as Fig. 3 and Tu Shown in 4: be provided with the first connecting hole 3a on the first described linkage section 31, the second linkage section 32 is arranged Having the second connecting hole 3b, the line of centres A-A of the first connecting hole 3a and the second connecting hole 3b is through S-shaped The central point 30 of resilient deformation section 33.The first connection bump 1a (ginseng it is provided with in described contact support 1 See Fig. 2, Fig. 7), it is connected with the first connecting hole 3a on the first linkage section 31 of springs 3；Institute The second connection bump 2b (seeing Fig. 5, Fig. 7) it is provided with, it and springs 3 on the contact bridge 2 stated The second connecting hole 3b on second linkage section 32 connects.Obviously, such structure bullet to springs 3 Property deformation will not produce cause the second linkage section 32 upset and traversing power and action the most favourable.For It is easy to assembling, simultaneously it may also be ensured that contact bridge 2 will not produce upset and traversing, a kind of adoptable skill Art means are, the first described connecting hole 3a and the connection of the first connection bump 1a are dismountable static connection； And/or, the second described connecting hole 3b and the connection of the second connection bump 2b are dismountable static connection.

Another useful feature of the present utility model is the overall co-ordination structure of dynamic contact mechanism, it may be assumed that described Contact support 1 on be provided with installation the springs 3 and groove 10 of contact bridge 2；Arrange in groove 10 There are the installed surface 11 coordinated with the first linkage section 31 and the confined planes 12 faced toward with this installed surface 11；Described Installed surface 11 abut with the first linkage section 31 of springs 3, the second linkage section 32 of springs 3 Abutting with contact bridge 2, contact bridge 2 abuts cooperation with confined planes 12；It is provided with on described installed surface 11 The first connection bump 1a coordinated with the first connecting hole 3a, described contact bridge 2 is provided with and is connected with second The second connection bump 2b that hole 3b coordinates.Abutting described here coordinates and refers to: movable contact 21 and 22 with During corresponding stationary contact (not shown) disjunction, contact bridge 2 abuts with confined planes 12, springs 3 are discharged into critical altitude H (seeing Fig. 6)；Close with corresponding stationary contact at movable contact 21 and 22 Time, contact bridge 2 separates with confined planes 12, springs 3 by compression to minimum working height h (see Fig. 6).Further, described contact supports that groove 10 top sidewall (installed surface 11) of 1 is provided with spacing Groove 13, the width of stopper slot 13 is suitable with the width of springs 3, and less than the width of contact bridge 2；Sheet Shape spring 3 is connected in stopper slot 13.The width of stopper slot 13 is slightly larger than the width of springs 3, sheet Shape spring 3 prevents it from prolonging width skew in being connected to stopper slot 13, the width of stopper slot 13 is little simultaneously In the width of contact bridge 2, when preventing dynamic/static contact from contacting, the compressing springs 3 of contact bridge 2 transition.Institute The first connection bump 1a that the first connecting hole 3a with the first linkage section 31 coordinates it is provided with in stating stopper slot 13； The guiding surface 14 being easy to springs 3 it is provided with in the both sides of the first connection bump 1a.Additionally, such as Fig. 1 In shown embodiment, the contact support 1 of dynamic contact mechanism can also be simultaneously provided with multiple groove 10, can be same Time multiple contact bridge 2 is set, multiple contact bridges 2 are arranged on contact and prop up by the springs 3 of multiple S-shaped respectively Hold on 1.The principle causing the beneficial effects of the utility model is further illustrated below in conjunction with Fig. 6.At Fig. 6 In, fa is the minimum elastic force under critical altitude H, and fb is the middle elastic force under middle working depth, Fc is the maximum elastic force under minimum working height h.Due to the first connecting hole 3a's and the second connecting hole 3b Line of centres A-A through the central point 30 (seeing Fig. 3) of resilient deformation section 33, so, act on lamellar Elastic force on spring 3 (i.e. minimum elastic force fa under critical altitude H, under middle working depth Middle elastic force fb, maximum elastic force fc under minimum working height h) all the time through resilient deformation section 33 Central point 30.It is deformed to minimum working height h from critical altitude H at the springs 3 shown in Fig. 6 During: the most there is not elastic deformation, the second linkage section 32 in the first linkage section 31 and the second linkage section 32 Only make moving up and down relative to the first linkage section 31, upset and transverse shifting do not occur；And resilient deformation section 33 there is elastic deformation, and overturn around its central point 30.Visible, the deformation of resilient deformation section 33 and turning over The Joint effect turned makes resilient deformation section 33 to produce to cause the second linkage section 32 to overturn and transverse shifting Power.

Dynamic contact mechanism of the present utility model can be used for disconnecting switch, and disconnecting switch includes that shell block (does not shows in figure Go out), two stationary contacts being fixedly mounted in shell block, dynamic contact mechanism of the present utility model is arranged in shell block, Dynamic contact mechanism contact bridge 2 be arranged on contact by the springs 3 of S-shaped and support on 1, moving contact Contact bridge 2 two ends of mechanism are provided with two movable contacts being correspondingly arranged with two stationary contacts, dynamic contact mechanism Contact support 1 can reciprocatingly slide in shell block and make two movable contacts be contacting and separating with two stationary contacts reality simultaneously The break-make of existing circuit.Springs 3 is by the first linkage section 31, resilient deformation section 33 and the second linkage section 32 It is in turn connected into S-shaped；Contact support 1 is connected with the first described linkage section 31, the second of springs 3 Linkage section 32 is connected with contact bridge 2；The rectilinear movement of contact support 1 drives springs 3 to move, lamellar The mobile drive contact bridge 2 of spring 3 moves, the mobile drive movable contact thereon of contact bridge 2 and stationary contact Guan Bi/disjunction.Contact supports the connection of 1 and the first described linkage section 31, and the second of springs 3 is even The section of connecing 32 is static connection with the connection of contact bridge 2.It should be appreciated that arrive, static connection can improve contact further There is not the effect of upset and transverse shifting in bridge 2, also help the assembling of disconnecting switch simultaneously.But it is existing The product with isosceles trapezoid shell fragment, it cannot realize the static connection of isosceles trapezoid shell fragment and contact bridge.This The dynamic contact mechanism of utility model can be not only used for disconnecting switch it can also be used to device for switching such as catalysts.

Above content is to combine concrete preferred implementation further detailed description of the utility model, It cannot be assumed that of the present utility model being embodied as is confined to these explanations.For technology belonging to this utility model For the those of ordinary skill in field, without departing from the concept of the premise utility, it is also possible to if making Dry simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.

Claims (10)

1. a dynamic contact mechanism, including contact support (1), contact bridge (2) is arranged on tactile by spring Head is supported on (1), it is characterised in that: described spring is the springs (3) of S-shaped, described contact Support to be provided with on (1) installation springs (3) and the groove (10) of contact bridge (2), contact bridge (2) Through groove (10), the springs (3) of S-shaped is connected between groove (10) and contact bridge (2) will Contact bridge (2) flexible fastening.

Dynamic contact mechanism the most according to claim 1, it is characterised in that: described springs (3) It is in turn connected into S-shaped by the first linkage section (31), resilient deformation section (33), the second linkage section (32) Symmetrical form；First linkage section (31) of described springs (3) and the second linkage section (32) Being respectively straight lamellar, resilient deformation section (33) is the lamellar of S-shaped bending.

Dynamic contact mechanism the most according to claim 2, it is characterised in that: described springs (3) The global shape of resilient deformation section (33) be the point symmetry shape centered by the central point (30) of S-shaped.

Dynamic contact mechanism the most according to claim 2, it is characterised in that: described springs (3) The first linkage section (31) be parallel to each other with the second linkage section (32).

Dynamic contact mechanism the most according to claim 2, it is characterised in that: described springs (3) The first linkage section (31) on be provided with the first connecting hole (3a), the second linkage section is provided with on (32) Second connecting hole (3b), and, the first connecting hole (3a) and the line of centres A-A of the second connecting hole (3b) Central point (30) through the resilient deformation section (33) of springs (3).

Dynamic contact mechanism the most according to claim 5, it is characterised in that: described contact support (1) Groove (10) in be provided with the installed surface (11) coordinated with the first linkage section (31) and with this installation The confined planes (12) that face (11) faces toward；Described installed surface (11) connects with the first of springs (3) The section of connecing (31) abuts, and second linkage section (32) of described springs (3) supports with contact bridge (2) Connecing, described contact bridge (2) abuts cooperation with described confined planes (12)；Described installed surface (11) On be provided with the first connection bump (1a) coordinated with the first connecting hole (3a), described contact bridge (2) On be provided with the second connection bump (2b) coordinated with the second connecting hole (3b).

Dynamic contact mechanism the most according to claim 2, it is characterised in that: described contact support (1) Groove (10) top sidewall be provided with stopper slot (13), the width of stopper slot (13) and springs (3) Width suitable, and less than the width of contact bridge (2)；Springs (3) is connected to stopper slot (13) In.

Dynamic contact mechanism the most according to claim 7, it is characterised in that: in described stopper slot (13) It is provided with the first connection bump (1a) that the first connecting hole (3a) with the first linkage section (31) coordinates；? The both sides of one connection bump (1a) are provided with the guiding surface (14) being easy to springs (3).

Dynamic contact mechanism the most according to claim 1, it is characterised in that: described contact support (1) Being provided with multiple contact bridge (2), multiple contact bridges (2) are pacified by the springs (3) of multiple S-shaped respectively It is contained in contact support (1).

10. a disconnecting switch, including shell block, two stationary contacts being fixedly mounted in shell block, its feature It is: also include the dynamic contact mechanism as described in claim 1-9 is arbitrary, the contact bridge (2) of dynamic contact mechanism Two ends are provided with two movable contacts being correspondingly arranged with two stationary contacts, and the contact support (1) of dynamic contact mechanism can Reciprocatingly sliding in shell block is contacting and separating with two stationary contacts while of making two movable contacts realizes the break-make of circuit.