CN209544271U - Thermo magnetic trip release device and its breaker - Google Patents

Abstract

It includes: conduct piece that the utility model, which provides a kind of thermo magnetic trip release device and its breaker, thermo magnetic trip release device,；Thermal element is connect with conduct piece, so that thermal element generates heat；Bimetal leaf, including fixed part and the movable part connecting with fixed part, fixed part is fixedly connected with thermal element, and movable part is oppositely arranged with thermal element interval, the heat that fixed part receives thermal element makes movable part bending deformation, makes movable part far from the draw bar rotation of one end driving breaker of fixed part；Magnetic tripping mechanism, is fixedly connected with thermal element and bimetal leaf, for driving the draw bar of breaker to rotate.Above-mentioned thermo magnetic trip release device can be such that the position of the thermal bending deformation of bimetal leaf fixes, so that bimetal leaf it is each under same electric current bending length it is identical, bending degree is identical, rate of bending is identical and bending the time consistency it is more preferable, the Bending Stability for improving bimetal leaf, improves the ratio rate of curving of bimetal leaf.

Description

Thermo magnetic trip release device and its breaker

Technical field

The utility model relates to low voltage electrical apparatus technology fields, and in particular to a kind of thermo magnetic trip release device and its breaker.

Background technique

Thermo magnetic trip release device can provide magnetic protection and Thermal protection.Magnetic, which is protected, to be referred to, the magnetic field generated when electric current is sufficiently large Power overcomes reaction spring to be attracted dynamic iron core strike draw bar to act cutting circuit with pneumatic operating mechanism；Thermal protection refers to, electric Stream generates heat by thermal element when pyromagnetic trip gear, bimetal leaf temperature distortion, when being deformed into a certain degree, hits draw bar To act cutting circuit with pneumatic operating mechanism.

Thermal element and bimetal leaf in the prior art are straight-plate-type, and thermal element is bonded with bimetal leaf and thermal element Lower end and bimetal leaf lower end riveting.Bimetal leaf is by two or more metals or other materials with suitable performance A kind of composed composite material, generally comprises active layers and passive layer, and active layers are contacted with thermal element, and passive layer is then far from warm Element.Since active layers are different with the thermal expansion coefficient of passive layer, when the temperature is changed, the deformation of active layers is greater than passive layer Deformation so that bimetal leaf towards passive layer curving deform.When electric current causes thermal element to heat by thermal element When, the position begun to warm up on thermal element is not fixed, and then the position for causing bimetal leaf to start to receive heat is not fixed, and double Sheet metal start receive heat position be bimetal leaf bending position, the bending position for causing bimetal leaf each in this way Difference, the curved length of bimetal leaf is different, so that the bending degree of bimetal leaf and rate of bending difference, bimetal leaf Bending Time Inconsistency every time, causes the Bending Stability of bimetal leaf low.

Utility model content

Therefore, double in thermo magnetic trip release device in the prior art the technical problem to be solved by the present invention is to overcome The low defect of the Bending Stability of sheet metal, to provide a kind of thermo magnetic trip release device and its breaker.

In order to solve the above-mentioned technical problem, on the one hand, the utility model provides a kind of thermo magnetic trip release device, comprising:

Conduct piece；

Thermal element is connect with the conduct piece, so that the thermal element generates heat；

Bimetal leaf, including fixed part and the movable part being connect with the fixed part, the fixed part and the thermal element It is fixedly connected, the movable part is oppositely arranged with the thermal element interval, and the heat that the fixed part receives the thermal element makes The movable part bending deformation makes the movable part far from the draw bar rotation of one end driving breaker of the fixed part；

Magnetic tripping mechanism is fixedly connected with the thermal element and bimetal leaf, for driving the draw bar of breaker to rotate.

Optionally, the fixed position is in the bottom of the bimetal leaf, the bottom of the thermal element and the fixed part It is fixedly connected.

Optionally, the movable part include the first tilting section and rotational segment, first tilting section respectively with the fixation Portion is connected with the rotational segment, and the first tilting section is directed away from the direction inclination of the thermal element.

Optionally, the thermal element includes horizontal part and the vertical portion that connect with the horizontal part, the bimetal leaf position It is oppositely arranged on the horizontal part and with the vertical portion.

Optionally, the vertical portion is equipped with through-hole.

Optionally, the vertical portion include the first linkage section, the second linkage section and respectively with first linkage section and Second tilting section of the second linkage section connection, first linkage section are connect with horizontal part, and second tilting section is directed away from The direction of the bimetal leaf tilts.

Optionally, the magnetic tripping mechanism includes:

Static iron core；

Armature bracket, is sheathed on the periphery of the bimetal leaf and thermal element, and the part armature bracket is located at the heat Between element and static iron core, the armature bracket, static iron core, thermal element are fixedly connected with bimetal leaf；

Dynamic iron core is rotationally connected with the armature bracket and is oppositely arranged with the static iron core, and the static iron core is attracted institute When stating dynamic iron core, the dynamic iron core along the dynamic iron core vertical direction far from one end of the static iron core towards the side of draw bar To rotation, to push draw bar to rotate.

Optionally, the armature bracket is fixed with fixing axle, and the dynamic iron core and the fixing axle are rotatablely connected.

Optionally, the magnetic tripping mechanism further includes elastic component, and the elastic component is connected in the fixing axle, the bullet Property part one end abutted with the dynamic iron core, the other end is abutted with the armature bracket, and the static iron core stops being attracted described dynamic When iron core, the elastic component drives the dynamic iron core to reset.

Optionally, the dynamic iron core includes intermediate plate and the first side plate being oppositely arranged on the intermediate plate and Two side plates, second side plate includes the fixing end connecting with the intermediate plate and the free end that connect with fixing end, described Intermediate plate is oppositely arranged with the bimetal leaf, and the elastic component is abutted with the intermediate plate, first side plate and second side Plate is located on the lateral surface of the armature bracket and is rotatablely connected with the fixing axle, and the static iron core is attracted the dynamic iron core When, the free end is rotated towards the direction of draw bar, to push draw bar to rotate.

On the other hand, the utility model provides a kind of breaker, including thermo magnetic trip release device as described above.

It optionally, further include shell and the magnet ring in the shell, the thermo magnetic trip release device is set to the shell In, the conduct piece is located in the magnet ring, and one end is stretched out the magnet ring and connect with joint cover, and the magnet ring is located at described Between knot tying and static iron core.

Optionally, further include arc quenching system, contact system and flexible connection, the thermal element by the flexible connection with it is described Contact system connection, the part contact system are located in the arc quenching system, the electricity generated for extinguishing the contact system Arc.

Technical solutions of the utility model have the advantages that

1. thermo magnetic trip release device provided by the utility model, including conduct piece, thermal element, bimetal leaf and magnetic tripping machine Structure, conduct piece are connect with thermal element, and the electric energy of conduct piece is transferred to thermal element, and thermal element generates heat after being powered；Bimetal leaf Including fixed part and the movable part connecting with fixed part, fixed part is fixedly connected with thermal element, movable part and thermal element interval phase To setting, that is, bimetal leaf only has fixed part to contact with thermal element, and movable part is not contacted with thermal element, and such thermal element generates Heat be only transferred to fixed part, and fixed between fixed part and thermal element, the then company of heat transfer to fixed part and movable part When connecing position, movable part is using the link position of fixed part and movable part as fulcrum bending deformation, the process of movable part bending deformation In, the one end of movable part far from fixed part can drive the draw bar of breaker to rotate, so that the operation connecting with draw bar Circuit can be cut off in mechanism.

Since the heat of thermal element can only be transferred to the fixed part of bimetal leaf, and fixed part is fixedly connected with thermal element, So that movable part can only be using the link position of fixed part and movable part as fulcrum bending deformation, it in this way can be by bimetal leaf by hot bending The position of bent deformation is fixed, and fixed part receives heat and more collects neutralization stabilization, so that bimetal leaf is each under same electric current Bending length it is identical, bending degree is identical, rate of bending is identical and bending the time consistency it is more preferable, improve bimetallic The Bending Stability of piece improves the ratio rate of curving of bimetal leaf.

2. thermo magnetic trip release device provided by the utility model, fixed position is in the bottom of bimetal leaf, the bottom of thermal element It is fixedly connected with fixed part, the length of movable part can be further increased in this way, and then increase the bending length of movable part, improved double The rate of curving of sheet metal.

3. thermo magnetic trip release device provided by the utility model, movable part includes the first tilting section and rotational segment, the first inclination Section is connect with fixed part and rotational segment respectively, and the first tilting section is directed away from the direction inclination of thermal element, passes through the first tilting section It can make that there is certain interval between movable part and thermal element, prevent thermal element from contacting with movable part, and then thermal element is by heat It is transferred directly to movable part, influences the Bending Stability in bimetal leaf.

4. thermo magnetic trip release device provided by the utility model, thermal element include horizontal part and connect with horizontal part it is vertical Portion, vertical portion are equipped with through-hole, can increase the resistance of thermal element in this way, and thermal element can be made to generate heat when electric current passes through thermal element Speed faster, solves the problems, such as that thermal element generates heat difficult in low rated current and generates heat slow；Meanwhile the heat on thermal element Amount can quickly be transferred to bimetal leaf, make the faster bending deformation driving draw bar rotation of bimetal leaf, to reduce The drop-away time of operating mechanism improves the breaking capacity of breaker.

5. thermo magnetic trip release device provided by the utility model, vertical portion includes the first linkage section, the second linkage section, Yi Jifen The second tilting section not connecting with the first linkage section and the second linkage section, the second gradient section are directed away from the direction of bimetal leaf Inclination, can make the larger interval between the movable part of bimetal leaf and the vertical portion of thermal element in this way, it is ensured that movable part and vertical Hot transmitting will not be directly carried out between portion, improve the Bending Stability of bimetal leaf.

6. thermo magnetic trip release device provided by the utility model, magnetic tripping mechanism includes static iron core, armature bracket and dynamic iron core, Armature bracket is set in the periphery of bimetal leaf and thermal element, the part-structure of armature bracket be located at thermal element and static iron core it Between, armature bracket, static iron core, thermal element are fixedly connected with bimetal leaf, can make armature bracket, static iron core, thermal element and double gold The relative position belonged between piece is fixed, and situations such as element falls off is less prone to.Dynamic iron core be rotatably connected on armature bracket and with Static iron core is oppositely arranged, and static iron core can produce electromagnetic attraction in the case where energization, and the electromagnetic attraction that static iron core generates can will move Iron core is attracted, and keeps the one end being oppositely arranged in dynamic iron core with static iron core mobile towards the direction close to static iron core, and dynamic iron core with Armature bracket is rotation connection, and when one end of dynamic iron core is towards close to the movement of the direction of static iron core, dynamic iron core is along the perpendicular of dynamic iron core Histogram is mobile to the direction that one end far from static iron core is directed away from static iron core, that is, one end direction of the dynamic iron core far from static iron core The direction of draw bar, which turns to, pushes draw bar rotation, so that operating mechanism cuts off circuit.

7. thermo magnetic trip release device provided by the utility model, magnetic tripping mechanism further includes elastic component, and elastic component is connected to solid On dead axle, one end of elastic component is abutted with dynamic iron core, and the other end of elastic component is abutted with armature bracket, and static iron core is attracted dynamic iron core When rotating dynamic iron core, elastic component generates elastic force by compression, pushes draw bar rotation that operating mechanism is made to cut off circuit in dynamic iron core Afterwards, static iron core electromagnetic attraction disappear, dynamic iron core elastic component elastic force effect under reset, convenient for when failure occurs next time after Continuous work.

8. thermo magnetic trip release device provided by the utility model, dynamic iron core include intermediate plate and are oppositely arranged on intermediate plate The first side plate and the second side plate, the first side plate and the second side plate be located on the lateral surface of armature bracket, and rotates with fixing axle Connection, so that the first side plate and the second side plate can be rotated by the actuation of the electromagnetic attraction of static iron core.

9. breaker provided by the utility model, including above-mentioned thermo magnetic trip release device, so that the bimetal leaf in breaker With good Bending Stability, so that the stability of thermo magnetic trip release device is more preferable.

10. breaker provided by the utility model, further includes shell and the magnet ring in shell, thermo magnetic trip release device is set In shell, one end of conduct piece is connect with thermal element, and the other end passes through magnet ring and connect with joint cover, that is, magnet ring, which is connected to, leads On electric part；Magnet ring is between joint cover and static iron core.

In the prior art, the conduct piece in the breaker of low rated current, which is directly connect with bimetal leaf, sends out bimetal leaf Thermal bending deformation, the breaker of this low rated current can be in the close outlets of thermal element for the stability that instantaneously verifies and be delayed The side at end increases magnetic coil, to increase the heat of bimetal leaf, occupies the peace of magnet ring and joint cover due to increasing magnetic coil Space is filled, causes magnet ring that can not normally be put into original position；Moreover, this also increases the crowding of element each in shell, The element radiating being unfavorable in breaker.And the application is that conduct piece is connect with thermal element, thermal element transfers heat to double gold Belong to piece, since the heat that thermal element generates is enough, so that the heat being transferred on bimetal leaf also meet demand, and then no longer need Increase increasing magnetic coil, to save the installation space of magnet ring and joint cover, keeps the intracorporal space of shell more spacious, be conducive to low Element radiating in the breaker of rated current extends the service life of breaker.Simultaneously as the space in shell 10 is wider It is spacious, and then the electric leakage performance of breaker can be promoted in this way with the better magnet ring of installation capability.

11. breaker provided by the utility model, further include arc quenching system, contact system and software in flakes, thermal element is logical It crosses flexible connection to connect with contact system, part contact system is located in arc quenching system, when contact system generates electric arc, can pass through Arc quenching system is by arc extinction.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the schematic diagram of the thermo magnetic trip release structure provided in the first embodiment of the utility model；

Fig. 2 is the side view of the thermo magnetic trip release structure provided in the first embodiment of the utility model；

Fig. 3 is the schematic diagram of the bimetal leaf provided in the first embodiment of the utility model；

Fig. 4 is the schematic diagram of the thermal element provided in the first embodiment of the utility model；

Fig. 5 is the schematic diagram that the thermal element that provides is connect with bimetal leaf in the first embodiment of the utility model；

Fig. 6 is the top view of the breaker provided in second of embodiment of the utility model；

Fig. 7 is the partial schematic diagram of the breaker provided in second of embodiment of the utility model.

Description of symbols:

1, conduct piece；2, thermal element；21, horizontal part；22, vertical portion；221, the first linkage section；222, the second linkage section； 223, the second tilting section；23, through-hole；3, bimetal leaf；31, fixed part；32, movable part；321, the first tilting section；322, it rotates Section；4, static iron core；5, armature bracket；6, dynamic iron core；61, intermediate plate；62, the first side plate；63, the second side plate；7, fixing axle；8, Elastic component；9, draw bar；10, shell；11, magnet ring；12, joint cover；13, contact system；14, flexible connection.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other Not constituting conflict can be combined with each other.

Embodiment one

A kind of specific embodiment of thermo magnetic trip release device as shown in Figures 1 to 5, comprising:

Conduct piece 1.

Thermal element 2 is connect with the conduct piece 1, so that the thermal element 2 generates heat.

Bimetal leaf 3, including fixed part 31 and the movable part 32 being connect with the fixed part 31, the fixed part 31 and institute It states thermal element 2 to be fixedly connected, the movable part 32 is oppositely arranged with the thermal element 2 interval, and the fixed part 31 receives described The heat of thermal element 2 makes 32 bending deformation of movable part, drives the movable part 32 far from one end of the fixed part 31 The draw bar 9 of breaker rotates.

Magnetic tripping mechanism is fixedly connected with the thermal element 2 and bimetal leaf 3, for driving 9 turns of draw bar of breaker It is dynamic.

Above-mentioned thermo magnetic trip release device includes conduct piece 1, thermal element 2, bimetal leaf 3 and magnetic tripping mechanism, conduct piece 1 and heat Element 2 connects, and the electric energy of conduct piece 1 is transferred to thermal element 2, and thermal element 2 generates heat after being powered.Bimetal leaf 3 includes fixing Portion 31 and the movable part 32 connecting with fixed part 31, fixed part 31 are fixedly connected with thermal element 2, between movable part 32 and thermal element 2 Every being oppositely arranged, that is, bimetal leaf 3 only has fixed part 31 to contact with thermal element 2, and movable part 32 is not contacted with thermal element 2, in this way The heat that thermal element 2 generates is only transferred to fixed part 31, and fixed between fixed part 31 and thermal element 2, then heat transfer is to admittedly When determining link position of the portion 31 with movable part 32, movable part 32 is bent by fulcrum of the link position of fixed part 31 and movable part 32 Deformation, during 32 bending deformation of movable part, the one end of movable part 32 far from fixed part 31 can drive the draw bar 9 of breaker Rotation, so that circuit can be cut off in the operating mechanism connecting with draw bar 9.

Since the heat of thermal element 2 can only be transferred to the fixed part 31 of bimetal leaf 3, and fixed part 31 and thermal element 2 are solid Fixed connection, so that movable part 32 can only can incite somebody to action in this way using the link position of fixed part 31 and movable part 32 as fulcrum bending deformation The position of 3 heated bending of bimetal leaf deformation is fixed, and fixed part 31 receives heat and more collects neutralization stabilization, so that bimetal leaf 3 bending lengths each under same electric current are identical, bending degree is identical, rate of bending is identical and the bending time it is consistent Property it is more preferable, improve bimetal leaf 3 Bending Stability, improve bimetal leaf 3 the ratio rate of curving.

As shown in figure 5, the fixed part 31 is located at the bottom of the bimetal leaf 3, the bottom of the thermal element 2 with it is described Fixed part 31 is fixedly connected, and can be further increased the length of movable part 32 in this way, and then increase the bending length of movable part 32, be mentioned The rate of curving of high bimetal leaf 3.

As depicted in figs. 3 and 5, the movable part 32 includes the first tilting section 321 and rotational segment 322, first inclination Section 321 is connect with the fixed part 31 and the rotational segment 322 respectively, and the first tilting section 321 is directed away from the thermal element 2 Direction inclination.It can make that there is certain interval between movable part 32 and thermal element 2 by the first tilting section 321, prevent thermal element 2 It is contacted with movable part 32, and then heat is transferred directly to movable part 32 by thermal element 2, the bending influenced in bimetal leaf 3 is stablized Property.

For rotational segment 322 have shape with no restriction, as long as its can with thermal element 2 be spaced be arranged, it is ensured that not with Thermal element 2 contacts.For example, rotational segment 322 can be straight panel, twisted plate, straight panel and the connection of hang plate interval etc..

As shown in Figures 4 and 5, the thermal element 2 includes horizontal part 21 and the vertical portion 22 connecting with the horizontal part 21, The bimetal leaf 3 is located on the horizontal part 21 and is oppositely arranged with the vertical portion 22.Bimetal leaf 3 is arranged in horizontal part On 21, horizontal part 21 has the function of carrying bimetal leaf 3, and bimetal leaf 3 can be prevented opposite along the vertical direction of vertical portion 22 Vertical portion 22 is fallen.

As shown in figure 4, the vertical portion 22 is equipped with through-hole 23.In one timing of area of thermal element 2, set on vertical portion 22 Through-hole 23 is set, the area of thermal element 2 can be reduced, and then increase the resistance of thermal element 2, electric current can make hot member when passing through thermal element 2 Part 2 generates the speed of heat faster, solves the problems, such as that thermal element 2 generates heat difficult in low rated current and generates heat slow；Together When, the heat on thermal element 2 can quickly be transferred to bimetal leaf 3, make the faster bending deformation of bimetal leaf 3 driving traction Bar 9 rotates, to reduce the drop-away time of operating mechanism, improves the breaking capacity of breaker.

It is connect with conduct piece 1 and in the case that vertical portion 22 is fixedly connected with fixed part 31 not influencing vertical portion 22, The aperture of through-hole 23 can be big as far as possible, further decreases the resistance of thermal element 2, improves the heat production speed of thermal element 2.

As shown in Figures 4 and 5, the vertical portion 22 include the first linkage section 221, the second linkage section 222 and respectively with Second tilting section 223 of first linkage section 221 and the connection of the second linkage section 222, first linkage section 221 and horizontal part 21 connections, second tilting section 223 are directed away from the direction inclination of the bimetal leaf 3, can make the work of bimetal leaf 3 in this way Larger interval between dynamic portion 32 and the vertical portion 22 of thermal element 2, it is ensured that between movable part 32 and vertical portion 22 will not directly into Row heat transmitting, improves the Bending Stability of bimetal leaf 3.

As shown in figure 4, through-hole 23 is set to first linkage section 221, the fixation of the first linkage section 221 and bimetal leaf 3 Portion 31 is fixedly connected, and is equivalent to the resistance for reducing the first linkage section 221 in this way, and then can make the speed of the generation heat of thermal element 2 Faster, the heat of thermal element 2 can faster be transferred to fixed part 31 to degree, enable the quick bending deformation of movable part 32, thus Faster driving draw bar 9 rotates, and is further reduced the drop-away time of operating mechanism, improves the breaking capacity of breaker.

For being fixedly connected with mode with no restriction between the first linkage section 221 and fixed part 31.For example, the first linkage section 221 rivet with fixed part 31.

As shown in Figures 1 and 2, stating magnetic tripping mechanism includes:

Static iron core 4.

Armature bracket 5, is sheathed on the periphery of the bimetal leaf 3 and thermal element 2, and the part armature bracket 5 is located at institute It states between thermal element 2 and static iron core 4, the armature bracket 5, static iron core 4, thermal element 2 are fixedly connected with bimetal leaf 3, can be made Relative position between armature bracket 5, static iron core 4, thermal element 2 and bimetal leaf 3 is fixed, and is less prone to element and the feelings such as is fallen off Condition.

The mode that armature bracket 5, static iron core 4, thermal element 2 are fixedly connected with bimetal leaf 3 can be riveting.

Dynamic iron core 6 is rotationally connected with the armature bracket 5 and is oppositely arranged with the static iron core 4, and the static iron core 4 is inhaled When closing the dynamic iron core 6, the dynamic iron core 6 is led along the vertical direction of the dynamic iron core 6 far from one end of the static iron core 4 direction Draw the direction rotation of bar 9, to push draw bar 9 to rotate.

Dynamic iron core 6 is rotatably connected on armature bracket 5 and is oppositely arranged with static iron core 4, and static iron core 4 is in the case where energization It can produce electromagnetic attraction, dynamic iron core 6 can be attracted by the electromagnetic attraction that static iron core 4 generates, and be made opposite with static iron core 4 in dynamic iron core 6 The direction of one end of setting towards close static iron core 4 is mobile, and dynamic iron core 6 and armature bracket 5 are rotation connection, dynamic iron core 6 When one end is mobile towards the direction close to static iron core 4, dynamic iron core 6 along dynamic iron core 6 vertical direction far from one end court of static iron core 4 It is mobile to the direction far from static iron core 4, that is, the direction of dynamic iron core 6 one end far from static iron core 4 towards draw bar 9, which turns to, to push away Dynamic draw bar 9 rotates, so that operating mechanism cuts off circuit.

As shown in Figure 1, the armature bracket 5 is fixed with fixing axle 7, the dynamic iron core 6 connects with the fixing axle 7 rotation It connects.

As shown in Figure 1, the magnetic tripping mechanism further includes elastic component 8, the elastic component 8 is connected in the fixing axle 7, One end of the elastic component 8 is abutted with the dynamic iron core 6, and the other end is abutted with the armature bracket 5, and the static iron core 4 stops When being attracted the dynamic iron core 6, the elastic component 8 drives the dynamic iron core 6 to reset.Static iron core 4, which is attracted dynamic iron core 6, makes dynamic iron core 6 When rotation, elastic component 8 generates elastic force by compression, quiet after dynamic iron core 6 pushes the rotation of draw bar 9 that operating mechanism is made to cut off circuit The electromagnetic attraction of iron core 4 disappears, and dynamic iron core 6 resets under the elastic force effect of elastic component 8, convenient for continuation when failure occurs next time Work.

With no restriction for elastic component 8, there is above-mentioned effect.For example, elastic component 8 can be torsional spring.

As shown in Figure 1, the dynamic iron core 6 include intermediate plate 61 and be oppositely arranged on the intermediate plate 61 first Side plate 62 and the second side plate 63, second side plate 63 include the fixing end and and fixing end connecting with the intermediate plate 61 The free end of connection, the intermediate plate 61 are oppositely arranged with the bimetal leaf 3, and the elastic component 8 is supported with the intermediate plate 61 It connects, first side plate 62 and the second side plate 63 are located on the lateral surface of the armature bracket 5 and rotate with the fixing axle 7 Connection, when the static iron core 4 is attracted the dynamic iron core 6, the free end is rotated towards the direction of draw bar 9, to push traction Bar 9 rotates.

Dynamic iron core 6 includes intermediate plate 61 and the first side plate 62 and the second side plate 63 that are oppositely arranged on intermediate plate 61, First side plate 62 and the second side plate 63 are located on the lateral surface of armature bracket 5, and are rotatablely connected with fixing axle 7, so that the first side Plate 62 and the second side plate 63 can be rotated by the actuation of the electromagnetic attraction of static iron core 4.

Embodiment two

A kind of specific embodiment of breaker as described in Fig. 1 to Fig. 7 is filled including thermo magnetic trip release described in embodiment one It sets, can make the bimetal leaf 3 in breaker that there is good Bending Stability, so that the stability of thermo magnetic trip release device is more It is good.

As shown in fig. 6, breaker further includes shell 10 and the magnet ring 11 in the shell 10, the thermo magnetic trip release dress It is arranged in the shell 10, the conduct piece 1 is located in the magnet ring 11, and the magnet ring 11 and joint cover 12 are stretched out in one end Connection, the magnet ring 11 is between the joint cover 12 and static iron core 4.

In the prior art, the conduct piece in the breaker of low rated current, which is directly connect with bimetallic piece, sends out bimetal leaf Thermal bending deformation, the breaker of this low rated current can be in the close wiring of thermal element for the stability that instantaneously verifies and be delayed The side at end increases magnetic coil, to increase the heat of bimetal leaf, occupies the peace of magnet ring and joint cover due to increasing magnetic coil Space is filled, causes magnet ring that can not normally be put into original position；Moreover, this also increases the crowding of element each in shell, The element radiating being unfavorable in breaker.And the conduct piece 1 in the present embodiment is connect with thermal element 2, thermal element 2 is by heat transfer To bimetal leaf 3, since the heat that thermal element 2 generates is enough, so that the heat being transferred on bimetal leaf 3 also meet demand, And then no longer need to increase increasing magnetic coil, to save the installation space of magnet ring 11 and joint cover 12, make the sky in shell 10 Between it is more spacious, be conducive to the element radiating in the breaker of low rated current, extend the service life of breaker.Simultaneously as Space in shell 10 is more spacious, and then can promote the electric leakage performance of breaker in this way with the better magnet ring 11 of installation capability.

Breaker further includes arc quenching system, contact system 13 and flexible connection 14, and the thermal element 2 passes through the flexible connection 14 It is connect with the contact system 13, the part contact system 13 is located in the arc quenching system, for extinguishing the contact system The electric arc that system 13 generates.It, can be by arc quenching system by arc extinction when contact system 13 generates electric arc.

It is understood that arc quenching system is the various arc quenching systems in the prior art applied in breaker.

Contact system 13 includes static contact and moving contact, and the contact position of static contact and moving contact is located in arc quenching system, Moving contact is connect by flexible connection 14 with thermal element 2.

Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes among the protection scope created still in the utility model.

Claims (13)

1. a kind of thermo magnetic trip release device characterized by comprising

Conduct piece (1)；

Thermal element (2) is connect with the conduct piece (1), so that the thermal element (2) generates heat；

Bimetal leaf (3), including fixed part (31) and the movable part (32) being connect with the fixed part (31), the fixed part (31) it is fixedly connected with the thermal element (2), the movable part (32) is oppositely arranged with the thermal element (2) interval, described solid The heat for determining portion (31) reception thermal element (2) makes the movable part (32) bending deformation, so that the movable part (32) is remote Draw bar (9) rotation of one end driving breaker from the fixed part (31)；

Magnetic tripping mechanism is fixedly connected with the thermal element (2) and bimetal leaf (3), for driving the draw bar (9) of breaker Rotation.

2. thermo magnetic trip release device according to claim 1, which is characterized in that the fixed part (31) is located at the bimetallic The bottom of the bottom of piece (3), the thermal element (2) is fixedly connected with the fixed part (31).

3. thermo magnetic trip release device according to claim 1, which is characterized in that the movable part (32) includes the first tilting section (321) connect respectively with the fixed part (31) and the rotational segment (322) with rotational segment (322), first tilting section (321) It connects, the first tilting section (321) is directed away from the direction inclination of the thermal element (2).

4. thermo magnetic trip release device according to claim 3, which is characterized in that the thermal element (2) includes horizontal part (21) With the vertical portion (22) being connect with the horizontal part (21), the bimetal leaf (3) be located on the horizontal part (21) and with institute Vertical portion (22) is stated to be oppositely arranged.

5. thermo magnetic trip release device according to claim 4, which is characterized in that the vertical portion (22) is equipped with through-hole (23).

6. thermo magnetic trip release device according to claim 5, which is characterized in that the vertical portion (22) includes the first linkage section (221), the second linkage section (222) and connect respectively with first linkage section (221) and the second linkage section (222) Two tilting sections (223), first linkage section (221) connect with horizontal part (21), and second tilting section (223) is directed away from The direction of the bimetal leaf (3) tilts.

7. thermo magnetic trip release device according to claim 1-6, which is characterized in that the magnetic tripping mechanism includes:

Static iron core (4)；

Armature bracket (5) is sheathed on the periphery of the bimetal leaf (3) and thermal element (2), part the armature bracket (5) position Between the thermal element (2) and static iron core (4), the armature bracket (5), static iron core (4), thermal element (2) and bimetal leaf (3) it is fixedly connected；

Dynamic iron core (6) is rotationally connected with the armature bracket (5) and is oppositely arranged with the static iron core (4), the static iron core (4) be attracted dynamic iron core (6) when, the dynamic iron core (6) along the dynamic iron core (6) vertical direction far from the static iron core (4) one end is rotated towards the direction of draw bar (9), to push draw bar (9) to rotate.

8. thermo magnetic trip release device according to claim 7, which is characterized in that the armature bracket (5) is fixed with fixing axle (7), the dynamic iron core (6) and the fixing axle (7) are rotatablely connected.

9. thermo magnetic trip release device according to claim 8, which is characterized in that the magnetic tripping mechanism further includes elastic component (8), the elastic component (8) is connected on the fixing axle (7), and one end and the dynamic iron core (6) of the elastic component (8) are supported It connecing, the other end is abutted with the armature bracket (5), when the static iron core (4) stops being attracted dynamic iron core (6), the elasticity Part (8) drives the dynamic iron core (6) to reset.

10. thermo magnetic trip release device according to claim 9, which is characterized in that the dynamic iron core (6) includes intermediate plate (61) and the first side plate (62) and the second side plate (63) that are oppositely arranged on the intermediate plate (61), second side plate It (63) include the fixing end being connect with the intermediate plate (61) and the free end being connect with fixing end, the intermediate plate (61) It is oppositely arranged with the bimetal leaf (3), the elastic component (8) abuts with the intermediate plate (61), first side plate (62) It is located on the lateral surface of the armature bracket (5) with the second side plate (63) and is rotatablely connected with the fixing axle (7), it is described quiet When iron core (4) is attracted dynamic iron core (6), the free end is rotated towards the direction of draw bar (9), to push draw bar (9) Rotation.

11. a kind of breaker, which is characterized in that including the described in any item thermo magnetic trip release devices of claim 1-10.

12. breaker according to claim 11, which is characterized in that further include shell (10) and be set to the shell (10) In magnet ring (11), the thermo magnetic trip release device be set to the shell (10) in, the conduct piece (1) is located at the magnet ring (11) It is interior, and one end is stretched out the magnet ring (11) and connect with joint cover (12), the magnet ring (11) be located at the joint cover (12) with it is quiet Between iron core (4).

13. breaker according to claim 11 or 12, which is characterized in that further include arc quenching system, contact system (13) And flexible connection (14), the thermal element (2) are connect by the flexible connection (14) with the contact system (13), the part touching Head system (13) is located in the arc quenching system, for extinguishing the electric arc of the contact system (13) generation.