CN207664012U - Device for switching and contact reprimand are opened and block structure - Google Patents

Abstract

A kind of contact reprimand, which is opened, blocks structure, contact reprimand, which is opened, to be blocked structure and is pivotally mounted in shell, including the shaft being pivotally connected in shell and the moving contact being pivotably attached in shaft, moving contact is installed on by spring in shaft, shaft drives moving contact rotation to be engaged with the static contact being installed in shell, buckle axis is installed in shaft, axis is buckled to be limited by one end of spring, the end thereof contacts for buckling axis and moving contact coordinate, when short-circuit, electrodynamic repulsion force is generated between moving contact and static contact drives moving contact to be detached with static contact relative to shaft rotation, one end of buckle axis and moving contact limits and stucks；The side of the shaft is equipped with opening mounting groove for installing moving contact and spring, and when installation, moving contact and spring are put into shaft from the side of the opening mounting groove of shaft and are installed.

Description

Device for switching and contact reprimand are opened and block structure

Technical field

The utility model is related to voltage appliance field, more particularly to a kind of device for switching and contact reprimand are opened and block structure.

Background technology

Breaker of plastic casing suitable for low voltage power distribution network, for connecting, disjunction and carrying running current be used, and Overload can occur in circuit or electrical equipment, short-circuit, under-voltage and earth fault occur in the case of cuts off the power, protection circuit Or electrical equipment is without damage.It is wherein again the most serious with short trouble, when there is short-circuit overcurrent, if breaker is excessively electric Stream protective device could not quickly cut off the power in time, can come significant damage and loss to personal safety and property economy-zone.When Have the especially short-circuit overcurrent of overcurrent by when, arc energy drastically rises, and huge arc energy be easy to cause breaker Mechanical part damage, and sound contact melted may be caused, to cause breaker breaking capacity to reach saturation, threaded off reliably Property reduce.

Traditional breaker of plastic casing, disengagement failure short circuit current are beaten by the execution structure action of its electromagnetic trip unit Operating mechanism is hit, operating mechanism automatically jumping is made, to make dynamic/static contact separate cut-out main circuit current.But this process is past Long toward the time, the especially big failed shorted electric current of failed shorted electric current has risen to a higher value, is breaker Blow-out brings difficulty, while in this process, and moving contact may generate spring in the effect of electrodynamic repulsion force, cause to repeat arcing Phenomenon can aggravate the scaling loss of dynamic/static contact, reduce the reliability of breaker work.

In addition, existing breaker, the installing and dismounting of moving contact component is inconvenient, the resetting spring for being installed with moving contact It is easily deformed failure.

Invention content

The purpose of the utility model is to overcome the defects of the prior art, provide a kind of performance safety stabilization, simple in structure Compact, device for switching easy for assemble or unload and contact reprimand are opened and block structure.

To achieve the above object, the utility model uses following technical solution：

A kind of contact reprimand, which is opened, blocks structure, and contact reprimand, which is opened, to be blocked structure and be pivotally mounted in shell, including is pivotally connected to Shaft 1 in shell and the moving contact 2 being pivotably attached in shaft 1, moving contact 2 are installed on by spring 3 in shaft 1, shaft 1 It drives the rotation of moving contact 2 to be engaged with the static contact 10 being installed in shell, buckle axis 4 is installed in shaft 1, buckles axis 4 It is limited by one end of spring 3, buckle axis 4 and the end thereof contacts of moving contact 2 coordinate, when short-circuit, between moving contact 2 and static contact 10 Generating electrodynamic repulsion force drives moving contact 2 to be detached with static contact 10 relative to the rotation of shaft 1, and buckle axis 4 and one end of moving contact 2 limit It blocks position；The side of the shaft 1 is equipped with opening mounting groove 101 for installing moving contact 2 and spring 3, when installation, moving contact 2 and spring 3 be put into shaft 1 from the side of the opening mounting groove 101 of shaft 1 and installed.

Further, the moving contact 2 and spring 3 are pivotally mounted to by being pivotally connected axis 5 in shaft 1, after electric appliance is threaded off, Moving contact 2 and the top touching of shell automatically reset.

Further, the shaft 1 is cylindrical type, and buckle axis 4 is circular shaft, and the both sides of the opening mounting groove 101 are formed Side wall 12 is limited, both sides limit side wall 12 and are equipped with the notch groove 102 for being used for installation card buckle shaft 4.

Further, the width of the notch groove 102 is more than or equal to the diameter of buckle axis 4.

Further, one end protrusion of the moving contact 2 is equipped with before short circuit occurs offsets the cam circle of limit with buckle axis 4 Cambered surface 201 blocks the groove arc face 202 of limit with buckle axis 4 when the side of cam arc surface 201 is equipped with short circuit.

Further, 1 middle part of the shaft penetrates through the first mounting hole 103 for being equipped with and being pivotally connected the installation cooperation of axis 5, moves tactile First 2 be equipped with the second mounting hole 103 for being pivotally connected the installation cooperation of axis 5, be set on spring 3 and be pivotally connected the installation of axis 5 and match The third mounting hole 301 of conjunction, be pivotally connected axis 5 sequentially pass through the first mounting hole 103 of 1 side of shaft, 3 side of spring third Mounting hole 301, the second mounting hole 103 of moving contact 2,3 other side of spring 1 other side of third mounting hole 301 and shaft One mounting hole 103 coordinates with moving contact 2 and the installation of spring 3.

Further, the spring 3 is torsion spring, is connected by torsional spring linkage section 322 between two torsional springs；Each torsional spring packet The first end arms 32 and second that columnar cylindric spring body 31 and cylindric spring body 31 in the middle part of including extend to both ends The end bending of end arms 33, the first end arms 32 is equipped with bending contact-segment 321, and torsional spring linkage section 322 connects two bending contact-segments 321 end, bending contact-segment 321 offset with buckle axis 4 and limit cooperation, and moving contact 2 is installed between two torsional springs, cylindric The middle part of spring body 31 is equipped with third mounting hole 301.

Further, the bottom protrusion of the opening mounting groove 101 is equipped with oblique with the limit of the other end of spring 3 limit cooperation Face 101a.

Further, the static contact 10 includes joint cover 111 and the stationary contact 112 being welded on joint cover 111, joint cover 111 include passing through linkage section between terminal plate 111a and U-shaped contact section 111b, terminal plate 111a and U-shaped contact section 111b 111c connections, stationary contact 112 are set to the upper end of U-shaped contact section 111b.

A kind of device for switching, including above-mentioned contact reprimand are opened and block structure.

The utility model contact reprimand, which is opened, blocks structure, under short circuit current, electrodynamic repulsion force is generated between dynamic/static contact, in open circuit Before device does not disconnect, moving contact can be held by rapid reprimand, and electric arc is generated between contact, can be to being played by the short circuit current of breaker Restriction effect limits clamping stagnation with buckle axis after moving contact overturning and can not automatically reset, and is only disconnected in breaker or automatically de- After button, moving contact could reset, and using this position limiting structure, performance safety is stablized；The side of shaft is equipped with for installing dynamic touch The opening mounting groove of head and spring, using the mounting groove of semi open model relative to enclosed mounting groove, moving contact and spring Be simple, convenient and fast is installed, the scope of activities of bigger is provided for spring the limit for buckling axis, spring transition deformation is avoided to cause Failure.Cam arc surface mutually abuts limit before short circuit occurs with buckle axis, and the installation of moving contact is more stablized, when short-circuit, Moving contact is rotated along shaft, and buckle axis is limited and stucked with groove arc face, prevents moving contact from automatically reseting before electric appliance is not threaded off. In moving contact action process, buckle axis can be smooth along notch groove, the frictional force of buffering clamp buckle shaft and moving contact.The utility model Additionally provide a kind of device for switching.

Description of the drawings

Fig. 1 is that the utility model contact reprimand opens the stereogram for blocking structure contact closure state；

Fig. 2 is that the utility model contact reprimand opens the stereogram for blocking structure contact reprimand open state；

Fig. 3 is that the utility model contact reprimand opens the sectional view for blocking structure contact closure state；

Fig. 4 is that the utility model contact reprimand opens the stereogram for blocking structure contact reprimand open state；

Fig. 5 is that the utility model contact reprimand opens the stereogram for blocking structure；

Fig. 6 is the stereogram of the utility model shaft；

Fig. 7 is the stereogram of the utility model moving contact；

Fig. 8 is the stereogram of the utility model spring；

Fig. 9 is the stereogram of the utility model static contact.

Specific implementation mode

Below in conjunction with the embodiment that attached drawing 1 to 9 provides, further illustrate that the device for switching of the utility model and contact reprimand are opened Block the specific implementation mode of structure.Device for switching and the contact reprimand of the utility model, which are opened, to be blocked structure and is not limited to following embodiment Description.

Device for switching of the present invention, including shell further include being installed on interior contact reprimand and opening to block structure, and the contact reprimand is opened It blocks structure and is installed on middle part in shell, contact reprimand, which is opened, to be blocked the top of structure and be equipped with to open with contact reprimand and block structure and be engaged Operating system, the top of shell is equipped with handle link with operating system, and handle drive operating system action drives can contact Reprimand, which is opened, to be blocked structure and is switched on and off circuit.Device for switching of the present invention is simple and compact for structure, and performance safety is stablized.Following embodiment It is illustrated by taking moulded case circuit breaker as an example, device for switching of the present invention can also be residual current action breaker, isolation The device for switching such as switch.

As shown in figs 1-9, the utility model contact reprimand is opened and blocks structure, and contact reprimand, which is opened, to be blocked structure and be pivotally mounted to shell It is interior, including the shaft 1 being pivotally connected in shell and the moving contact 2 being pivotably attached in shaft 1, moving contact 2 pacified by spring 3 Loaded in shaft 1, shaft 1 drives the rotation of moving contact 2 to be engaged with the static contact 10 being installed in shell, is installed in shaft 1 There are buckle axis 4, buckle axis 4 to be limited by one end of spring 3, buckle axis 4 and the end thereof contacts of moving contact 2 coordinate, and when short-circuit, move and touch Electrodynamic repulsion force is generated between first 2 and static contact 10 drives moving contact 2 to be detached with static contact 10 relative to the rotation of shaft 1, buckles axis 4 It is limited and stucked with one end of moving contact 2；The side of the shaft 1 is equipped with the opening mounting groove for installing moving contact 2 and spring 3 101, when installation, moving contact 2 and spring 3 are put into shaft 1 from the side of the opening mounting groove 101 of shaft 1 and are installed.This practicality Novel contact reprimand, which is opened, blocks structure, and under short circuit current, electrodynamic repulsion force is generated between dynamic/static contact, before breaker does not disconnect, Moving contact can be held by rapid reprimand, and electric arc is generated between contact, can be moved and touch to playing restriction effect by the short circuit current of breaker Head can not automatically reset after overturning with buckle axis limit clamping stagnation, and only after breaker disconnection or automatic dropout, moving contact is It can reset, using this position limiting structure, performance safety is stablized；The side of shaft is equipped with the opening for installing moving contact and spring Mounting groove, using the mounting groove of semi open model relative to enclosed mounting groove, the installation of moving contact and spring is simple and convenient fast Victory provides the limit for buckling axis for spring the scope of activities of bigger, spring transition deformation is avoided to cause to fail.

In addition the shaft of the utility model uses separate form, distinguishes a shaft, each pole turning engine per pole conducting system Structure is installed respectively, suitability higher.

As shown in Figs. 1-5, it further includes lug plate 6 that the utility model contact reprimand, which is opened and blocks structure, lug plate 6 by conducting wire with One end of moving contact 2 connects, and the moving contact 2 and spring 3 are pivotally mounted to by being pivotally connected axis 5 in shaft 1, and electric appliance is threaded off Afterwards, moving contact 2 and the top touching of shell automatically reset.In the present embodiment, moving contact 2 reset at dropout after touch breaker Lid automatically reset, other resetting structures, such as protrusion structure can be arranged in the reset of moving contact 2 on the lid of breaker.

As shown in fig. 6, the shaft 1 is cylindrical type, buckle axis 4 is circular shaft, the both sides shape of the opening mounting groove 101 At limit side wall 12, both sides limit side wall 12 and are equipped with the notch groove 102 for being used for installation card buckle shaft 4.Shaft is provided in round, and is turned More it is not easy to pacify buckle axis 4 with other elements clamping stagnation, both sides limit side wall setting notch groove 102 during dynamic Dress buckles the easier for installation quick of axis 4, and enclosed mounting hole can also be used by buckling the fixed structure of axis.It is described to lack The width of port recess 102 is more than or equal to the diameter of buckle axis 4, is slightly less than in practice.In moving contact action process, card Buckle shaft can be smooth along notch groove, the frictional force of buffering clamp buckle shaft and moving contact 2.The bottom protrusion of the opening mounting groove 101 Equipped with the limit inclined-plane 101a with the limit cooperation of the other end of spring 3.Inclined-plane 101a is limited in figure at the bottom of opening mounting groove 101 Portion is respectively set one, coordinates respectively with two end arms of torsion spring.

As shown in fig. 7, one end protrusion of the moving contact 2 is equipped with the convex of limit that offset with buckle axis 4 before short circuit occurs Arc surface 201 is taken turns, blocks the groove arc face 202 of limit when the side of cam arc surface 201 is equipped with short circuit with buckle axis 4.It is convex Wheel arc surface 201 mutually abuts limit before short circuit occurs with buckle axis 4, and the installation of moving contact is more stablized, and when short-circuit, move and touches First 2 rotate along shaft 1, and buckle axis 4 is limited and stucked with groove arc face 202, prevent moving contact 2 automatically multiple before electric appliance is not threaded off Position.

As shown in Figure 1,1 middle part of the shaft penetrates through the first mounting hole 103 for being equipped with and being pivotally connected the installation cooperation of axis 5, Moving contact 2 be equipped with the second mounting hole 103 for being pivotally connected the installation cooperation of axis 5, be set to and be pivotally connected the peace of axis 5 on spring 3 The third mounting hole 301 closed is assembled, axis 5 is pivotally connected and sequentially passes through the first mounting hole 103 of 1 side of shaft, 3 side of spring Third mounting hole 301, the second mounting hole 103 of moving contact 2,3 other side of spring 1 other side of third mounting hole 301 and shaft The first mounting hole 103 coordinate with moving contact 2 and the installation of spring 3.The utility model, which uses, to be pivotally connected axis 5 by spring 3 and moves Contact 2 is pivotably attached in shaft 1.

As shown in figure 8, the spring 3 is torsion spring, connected by torsional spring linkage section 322 between two torsional springs；It is each to turn round Spring includes the columnar cylindric spring body 31 at middle part and 32 He of the first end arms that cylindric spring body 31 extends to both ends The end bending of second end arms 33, the first end arms 32 is equipped with bending contact-segment 321, and torsional spring linkage section 322 connects two bendings and connects The end of section 321 is touched, bending contact-segment 321 offsets with buckle axis 4 and limits cooperation, and moving contact 2 is installed between two torsional springs, circle The middle part of column spring ontology 31 is equipped with third mounting hole 301.Spring 3 use torsion spring structure, to make moving contact both sides by Power is uniform, is conducive to moving contact balance, avoids that left and right is caused to deviate.Obviously, spring can also use single torsional spring structure.

As shown in figure 9, the static contact 10 includes joint cover 111 and the stationary contact 112 being welded on joint cover 111, connection Knot tying 111 includes passing through company between terminal plate 111a and U-shaped contact section 111b, terminal plate 111a and U-shaped contact section 111b A section 111c connections are connect, stationary contact 112 is set to the upper end of U-shaped contact section 111b.The U-shaped contact section of joint cover 111, Neng Gouti For enough electrodynamic repulsion forces, ensure that moving contact can reliably denounce out.

Illustrate that the utility model contact is denounceed with reference to Fig. 1-5 and opens the specific action process for blocking structure.

Normal "on" position, the cam arc surface 201 and the buckle limit of axis 4 of 2 one end of moving contact coordinate so that moving contact 2 It is reliably closed with static contact 10, when short-circuit, since device for switching is in "on" position, is generated between moving contact and static contact electronic Repulsion make moving contact 2 along shaft 1 rotate, groove arc face 202 with buckle axis 4 mutually limit make moving contact be stuck it is quiet Only, only after device for switching separating brake or automatic dropout, shaft 1 rotates, while triggering the reset of moving contact 2, moving contact 2 and shell Lid structure touching at the top of body resets.

It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined Assert that the specific implementation of the utility model is confined to these explanations.For the ordinary skill of the utility model technical field For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard To belong to the scope of protection of the utility model.

Claims (10)

1. a kind of contact reprimand, which is opened, blocks structure, contact reprimand, which is opened, to be blocked structure and is pivotally mounted in shell, it is characterised in that：Including pivot Turn the shaft (1) being connected in shell and the moving contact (2) being pivotably attached in shaft (1), moving contact (2) pass through spring (3) It is installed in shaft (1), shaft (1) drives moving contact (2) to rotate and is engaged with the static contact (10) being installed in shell, turns Buckle axis (4) is installed, buckle axis (4) is limited by one end of spring (3), buckle axis (4) and the one of moving contact (2) on axis (1) End in contact coordinate, when short-circuit, between moving contact (2) and static contact (10) generate electrodynamic repulsion force drive moving contact (2) relative to turn Axis (1) rotation is detached with static contact (10), and buckle axis (4) and one end of moving contact (2) limit and stuck；

The side of the shaft (1) is equipped with opening mounting groove (101) for installing moving contact (2) and spring (3), when installation, Moving contact (2) and spring (3) are put into shaft (1) from the side of the opening mounting groove (101) of shaft (1) and are installed.

2. contact reprimand according to claim 1, which is opened, blocks structure, it is characterised in that：The moving contact (2) and spring (3) are logical It crosses and is pivotally connected axis (5) and is pivotally mounted in shaft (1), after electric appliance is threaded off, moving contact (2) and the top touching of shell are automatic multiple Position.

3. contact reprimand according to claim 1 or 2, which is opened, blocks structure, it is characterised in that：The shaft (1) is cylindrical type, It is circular shaft to buckle axis (4), and the both sides of the opening mounting groove (101) form limit side wall (12), and both sides limit side wall (12) Equipped with the notch groove (102) for installation card buckle shaft (4).

4. contact reprimand according to claim 3, which is opened, blocks structure, it is characterised in that：The width of the notch groove (102) More than or equal to the diameter of buckle axis (4).

5. contact reprimand according to claim 1 or 2, which is opened, blocks structure, it is characterised in that：One end of the moving contact (2) is convex Go out and is equipped with before short circuit occurs the cam arc surface (201) of limit of offseting with buckle axis (4), the side of cam arc surface (201) The groove arc face (202) of limit is blocked when equipped with short circuit with buckle axis (4).

6. contact reprimand according to claim 2, which is opened, blocks structure, it is characterised in that：Perforation is equipped in the middle part of the shaft (1) Be pivotally connected axis (5) installation cooperation the first mounting hole (103), moving contact (2) be equipped with be pivotally connected axis (5) installation match The second mounting hole (103) closed is set on spring (3) and the third mounting hole (301) that is pivotally connected axis (5) installation cooperation, pivot Turn connecting shaft (5) sequentially pass through first mounting hole (103) of shaft (1) side, spring (3) side third mounting hole (301), The second mounting hole (103) of moving contact (2), the third mounting hole (301) of spring (3) other side and shaft (1) other side One mounting hole (103) coordinates with moving contact (2) and spring (3) installation.

7. contact reprimand according to claim 1 or 2, which is opened, blocks structure, it is characterised in that：The spring (3) is torsion spring, It is connected by torsional spring linkage section (322) between two torsional springs；Each torsional spring includes the columnar cylindric spring body at middle part (31) and the first end arms (32) for extending to both ends of cylindric spring body (31) and the second end arms (33), the first end arms (32) End bending is equipped with bending contact-segment (321), and torsional spring linkage section (322) connects the end of two bending contact-segments (321), bending Contact-segment (321) offsets with buckle axis (4) and limits cooperation, and moving contact (2) is installed between two torsional springs, cylindric spring body (31) middle part is equipped with third mounting hole (301).

8. contact reprimand according to claim 2, which is opened, blocks structure, it is characterised in that：The bottom of the opening mounting groove (101) Portion's protrusion is equipped with the limit inclined-plane (101a) with the limit cooperation of the other end of spring (3).

9. contact reprimand according to claim 1 or 2, which is opened, blocks structure, it is characterised in that：The static contact (10) includes connection Knot tying (111) and the stationary contact (112) being welded on joint cover (111), joint cover (111) include terminal plate (111a) and U-shaped Contact section (111b), between terminal plate (111a) and U-shaped contact section (111b) pass through linkage section (111c) connection, stationary contact (112) it is set to the upper end of U-shaped contact section (111b).

10. a kind of device for switching, it is characterised in that：It is opened including any contact reprimands of claim 1-9 and blocks structure.