CN205230959U - A relay that is used for drive arrangement of relay and has it - Google Patents

Abstract

The utility model discloses a relay that is used for drive arrangement of relay and has it, a drive arrangement includes for the relay: the bobbin, move iron core, drive shaft and permanent magnet. The bobbin is along the straight tube -shape of upper and lower direction extension, move the iron core establishes between the primary importance and the second place along upper and lower direction the slidable the inboard of bobbin, the drive shaft with it links to each other to move the iron core, the permanent magnet is used for pinning in the primary importance and the second place move the iron core, the permanent magnet is nested to be set up on the bobbin. According to the utility model discloses a drive arrangement, permanent magnet can embed and set up on the bobbin for the relay for the relay can move when changing between the primary importance and the second place smoothly.

Description

For relay drive unit and there is its relay

Technical field

The utility model relates to technical field of electric appliances, particularly relates to a kind of drive unit for relay and has its relay.

Background technology

In the relay of correlation technique, permanent magnet does not have fixed form to guarantee the position of connecting rod, and the position skew of connecting rod will cause the instability of the action of yoke, and then affects the action of relay.

Utility model content

The utility model is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the utility model first aspect is to propose a kind of drive unit for relay, and the stability of described drive unit is high.

The utility model second aspect is to propose a kind of relay being provided with above-mentioned drive unit.

According to the drive unit for relay of the utility model embodiment, comprising: upper yoke and lower yoke, described upper yoke and lower yoke are between the upper and lower every layout; Reel, described reel is located between described upper yoke and lower yoke and also vertically extends, and the upper end of described reel is connected with described upper yoke and the lower end of described reel is connected with described lower yoke; Coil, described coil winding is on described reel; Permanent magnet, the upper end of described permanent magnet is connected with described upper yoke and the lower end of described permanent magnet is connected with described lower yoke, and described permanent magnet is spaced apart multiple along the circumference of described reel; Flux sleeve, described flux sleeve to be located at inside described reel and to prolong above-below direction and extends; Dynamic iron core, described dynamic iron core be located in described flux sleeve at least partially slidably; Driving shaft, described driving shaft is connected with described dynamic iron core and stretches out described upper yoke.

According to the drive unit for relay of the utility model embodiment, permanent magnet can nested setting on a bobbin, make relay change time can action reposefully.

In addition, following additional technical characteristic can also be had according to the drive unit for relay of the utility model above-described embodiment:

According to an embodiment of the present utility model, described permanent magnet is extension along the vertical direction and horizontal cross-section is the column of fanning ring.

Further, multiple described permanent magnet is arranged along the circumferential uniform intervals of described reel, and the horizontal cross-section of multiple described permanent magnet is positioned on same annulus.

Further, described permanent magnet is located at the outside of described reel.

Alternatively, described permanent magnet is located at the inner side of described reel.

Alternatively, the upper surface of described reel is provided with one or circumferentially spaced apart multiple first reference column, the lower surface of described reel is provided with one or circumferentially spaced apart multiple second reference column, described first reference column inserts in described upper yoke, and described second reference column inserts in described lower yoke.

According to embodiments more of the present utility model, the upper surface of described upper yoke is provided with cushion pad, and the periphery that described driving shaft stretches out described upper yoke part is provided with the defining flange corresponding with described cushion pad.

Alternatively, described dynamic iron core is connected with back-moving spring, and described back-moving spring is set in the outside of described driving shaft, and the two ends of described back-moving spring are connected with described dynamic iron core with described upper yoke respectively.

Alternatively, the upper end of described dynamic iron core is provided with outwardly defining flange, and the lower end of described dynamic iron core is set in described flux sleeve slidably, and the radial dimension of described defining flange is greater than the radial dimension of described flux sleeve.

Alternatively, described reel comprises the straight tube extended along the vertical direction, the upper end of described straight tube is provided with outward extending first flange and the lower end of described straight tube is provided with outward extending second flange, and described coil winding is between described first flange and described second flange.

According to the relay of the utility model second aspect embodiment, comprising: upper casing, described upper casing is provided with the first spaced stationary contact bridge and the second stationary contact bridge; Dynamic tactile bridge, described dynamic tactile bridge is removable between the make position being communicated with described first stationary contact bridge and described second stationary contact bridge and the open position disconnecting described first stationary contact bridge and described second stationary contact bridge; Drive unit, described drive unit is the drive unit for relay described above, and the driving shaft of described drive unit is connected for driving the described dynamic bridge that touches to move between open position and make position with the described dynamic bridge that touches.

Accompanying drawing explanation

Fig. 1 is an explosive view of the relay of the utility model embodiment.

Fig. 2 is a cutaway view of the relay of the utility model embodiment.

Fig. 3 is the installation site schematic diagram of the reel of the utility model embodiment.

Fig. 4 is the installation site schematic diagram of the reel of another embodiment of the utility model.

Reference numeral:

Drive unit 100, reel 113, first reference column 111, second reference column 112, straight tube 114, first flange 115, second flange 116, coil 117, dynamic iron core 120, back-moving spring 121, dynamic iron core body 122, dynamic mandrel flange 123, driving shaft 130, defining flange 131, permanent magnet 140, upper yoke 150, cushion pad 151, lower yoke 160, flux sleeve 118, installing hole 101, mating holes 102, location hole 103, via hole 104 is installed, relay 200, upper casing 210, first stationary contact bridge 211, second stationary contact bridge 212, first fixed contact 213, second fixed contact 214, dynamic tactile bridge 220, moving contact 221, upper insulating case 201, lower insulating case 202, buffer spring 203, packing ring 204.

Embodiment

Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.

The drive unit 100 for relay according to the utility model embodiment is described in detail below in conjunction with Fig. 1 to Fig. 4.Composition graphs 1 and Fig. 2, according to the drive unit 100 for relay of the utility model embodiment, comprise yoke 150, lower yoke 160, reel 113, coil 117, permanent magnet 140, flux sleeve 118, dynamic iron core 120 and driving shaft 130.

Specifically, upper yoke 150 and lower yoke 160 can vertically be arranged at interval.Reel 113 can be located between yoke 150 and lower yoke 160, and reel 113 extends along the vertical direction, the upper end of reel 113 (such as, the upper end of reel 113 in Fig. 2) can be connected with upper yoke 150 and the lower end of reel 113 lower end of reel 113 (such as, in Fig. 2) can be connected with lower yoke 160.Coil 117 can be wound on reel 113.Flux sleeve 118 is located at inside reel 113 and also extends along the vertical direction.Dynamic iron core 120 be located in flux sleeve 118 at least partially slidably.Driving shaft 130 can be connected with dynamic iron core 120, and driving shaft 130 can stretch out yoke 150.

The upper end of permanent magnet 140 (such as, the upper end of permanent magnet 140 in Fig. 2 or Fig. 4) can be connected with upper yoke 150 and the lower end of permanent magnet 140 (such as, the lower end of permanent magnet 140 in Fig. 2 or Fig. 4) can be connected with lower yoke 160, it is multiple that the permanent magnet 140 circumferential uniform intervals that can comprise along reel 113 is arranged.According to the drive unit 100 for relay of the utility model embodiment, be provided with permanent magnet 140 and coil 117, dynamic iron core 120 can be driven to move by coil 117, and dynamic iron core 120 can be locked by permanent magnet 140, make relay can stably maintain closure state or off-state.

In addition, by permanent magnet 140 is arranged to spaced apart form, the stability of drive unit 100 can be improved further, but also can reduce costs.

In the relay 200 with this drive unit 100, can by drive unit 100 by the in stable condition maintenance of relay 200, specifically, relay stably can be maintained off-state or closure state (for convenience of description, if relay only has one group of switch here, for the relay with many group switches, can illustrate with the disconnection of group switch of wherein or closure state), thus avoid the misoperation of relay.

As Fig. 3, according to an embodiment of the invention for the drive unit 100 of relay, permanent magnet 140 is in cutting by the cylinder of hollow the shape formed in the axial direction.The structure of permanent magnet 140 can be made so simple, convenient formation.

Specifically, permanent magnet 140 is in the column extended along the vertical direction, and the horizontal cross-section of permanent magnet 140 is fan ring, that is, the horizontal cross-section of permanent magnet 140 is the shape surrounded by two radial transmission lines of two isocentric circular arc and this circular arc, in other words, permanent magnet 140 is be that the fan ring surrounded by two radial transmission lines of two isocentric circular arc and this circular arc stretches along the vertical direction and formed by cross section.In addition, the central angle of the horizontal cross-section of permanent magnet 140 can be arranged in the scope of 30 ° to 80 °.

Preferably, multiple permanent magnet 140 can be arranged along the circumferential uniform intervals of reel 113, and the horizontal cross-section of multiple permanent magnet 140 can be positioned on same annulus.And multiple permanent magnet 140 is about the Axial-rotational Symmetry of this annulus.In addition, described annulus axis can with the dead in line of reel 113.

Further preferably, the upper end of permanent magnet 140 can be inhaled merga pass viscose glue with upper yoke 150 and is connected, and the lower end of permanent magnet 140 can be inhaled merga pass viscose glue with lower yoke 160 and is connected.

As shown in the figure 3, permanent magnet 140 can be located at the outside (side such as, away from reel 113 center line is outside) of reel 113.Thus, assembling and the making of drive unit 100 is convenient to.

In addition, permanent magnet 140 can also be located at the inner side of reel 113.Thus the locking effect of permanent magnet 140 to dynamic iron core 170 can be improved.

Further, as shown in Figures 1 to 4, the upper surface of reel 113 can be provided with one or circumferentially spaced apart multiple first reference column 111 (with reference to Fig. 1 or Fig. 3), the lower surface of reel 113 can be provided with one or circumferentially spaced apart multiple second reference column 112 (with reference to Fig. 2 or Fig. 4), first reference column 111 can insert in yoke 150, and the second reference column 112 can insert in lower yoke 160.Thus, reel 113 can be realized reliably locate between upper yoke 150 and lower yoke 160.

Such as, in the example of Fig. 2 and Fig. 4, the upper surface of reel 113 can be provided with circumferentially spaced apart two the first reference columns 111, the lower surface of reel 113 also can be provided with circumferentially spaced apart two the second reference columns 112, upper yoke 150 and lower yoke 160 all can be provided with for assembling multiple first reference column 111 and multiple second reference column 112 mating holes 102 (with reference to Fig. 1), thus, the reliability that reel 113 is located can be ensured.

It should be noted that, the above-mentioned description to the first reference column 111 and the second reference column 112 number is exemplary, can not be interpreted as restriction of the present utility model.In other embodiments of the present utility model, the first reference column 111 and the second reference column 112 number can adaptability be arranged.

Alternatively, with reference to Fig. 1 composition graphs 2, the upper surface (such as, the upper surface of upper yoke 150 in Fig. 2) of upper yoke 150 can be provided with cushion pad 151, and the periphery that driving shaft 130 stretches out yoke 150 part can be provided with the defining flange 131 corresponding with cushion pad 151.In other words, cushion pad 151 can be arranged between the upper surface of defining flange 131 and upper yoke 150, and defining flange 131 may be used for the contact of cushion pad 151 air gap determining dynamic iron core 120, thus can reduce even to eliminate the deviation of artificially installing and causing.

Wherein, dynamic iron core 120 can move between the first position and the second position, and wherein primary importance can higher than the second place, and when dynamic iron core 120 is positioned at the second place, defining flange 131 can contact with cushion pad 151.

It should be noted that, described primary importance can one in the closure state of corresponding relay and off-state, and the described second place can another kind in the closure state of corresponding relay and off-state.Wherein, for there is the relay of many group switches, be described book for group switch of wherein, that is, by the state of the condition judgement relay residing for organize in switch a group more.

In addition, dynamic iron core 120 can be fixed by the mode such as Laser Welding of welding with driving shaft 130, and cushion pad 151 can be fixing by riveting with driving shaft 130, thus, can ensure the fastness of drive unit 100.

Alternatively, with reference to Fig. 2 and Fig. 4, permanent magnet 140 can be located between yoke 150 and lower yoke 160, thus, can be realized the axial limiting of permanent magnet 140 by upper yoke 150 and lower yoke 160.

Alternatively, as shown in Figure 2, dynamic iron core 120 can be connected with back-moving spring 121, and back-moving spring 121 can extend along the vertical direction.Thus, back-moving spring 121 can provide dynamic iron core 120 to reset required power.

Back-moving spring 121 can be set in the outside of driving shaft 130, the upper end of back-moving spring 121 is connected with upper yoke 150, and the lower end of back-moving spring 121 is connected with dynamic iron core 120.

Particularly, with reference to Fig. 2 composition graphs 4, dynamic iron core 120 can comprise dynamic iron core body 122 and dynamic mandrel flange 123, dynamic mandrel flange 123 can be positioned at the upper end of dynamic iron core body 122 (such as, the upper end of dynamic iron core body 122 in Fig. 4) periphery, can be provided with through hole in dynamic iron core 120, dynamic iron core body 122 and dynamic mandrel flange 123 can be all the cylindric of hollow.

Wherein, above-mentioned through hole can be counter sink, and through hole is suitable for driving shaft 130 and passes, and driving shaft 130 can be provided with back-moving spring 121 in the periphery of the counter sink portion of through hole, and the length of back-moving spring 121 is not less than the degree of depth of the counter sink portion of through hole.Thus, iron core 120 can be made relatively gently to reset.

With reference to Fig. 4 composition graphs 1, passable, the lower end of dynamic iron core 120 (such as, the lower end of dynamic iron core 120 in Fig. 4) be vertically set in slidably in flux sleeve 118, and the radial dimension of the upper end (the dynamic mandrel flange 123 namely in Fig. 4) of dynamic iron core 120 is greater than the radial dimension of flux sleeve 118.Thus, the Stable sliding of dynamic iron core 120 can be realized, can also conveniently to the location of dynamic iron core 120.

In addition, composition graphs 1, flux sleeve 118 can be the cylinder of hollow, and dynamic iron core 120 can be located in flux sleeve 118.Lower yoke 160 can also be provided with the location hole 103 for locating flux sleeve 118, flux sleeve 118 reliably can be located by location hole 103.

Reel 113 can comprise the straight tube 114 extended along the vertical direction, the upper end of straight tube 114 (such as, the upper end of straight tube 114 in Fig. 2) outward extending first flange 115 can be provided with and the lower end of straight tube 114 lower end of straight tube 114 (such as, in Fig. 2) can be provided with outward extending second flange 116.Coil 117 can be wound on reel 113 outside and can between the first flange 115 and the second flange 116.Thus, coil 117 can be made reliably to be wound on the outside of reel 113, thus the scope producing magnetic field can be limited.

Further, as shown in Figures 2 and 3, the inner peripheral surface of permanent magnet 140 upper end can be fitted with the outer peripheral face of the first flange 115, and the inner peripheral surface of the lower end of permanent magnet 140 can be fitted with the outer peripheral face of the second flange 116.Thus, the reliable location of permanent magnet 140 in radial direction can be realized by the first flange 115 and the second flange 116.

In addition, with reference to Fig. 4, dynamic iron core 120 can comprise dynamic iron core body 122 and dynamic mandrel flange 123, and dynamic mandrel flange 123 can be positioned at the periphery of the upper end (such as, moving the upper end of iron core body 122 in Fig. 4) of dynamic iron core body 122.

Wherein, when dynamic iron core 120 is positioned at primary importance such as attracted position, can by spacing in primary importance for dynamic iron core 120 by permanent magnet 140, when dynamic iron core 120 is positioned at the second place such as open position, can by spacing in the second place for dynamic iron core 120 by permanent magnet 140.

With reference to Fig. 2 composition graphs 1, drive unit 100 can also comprise yoke 150 and lower yoke 160, thus, can be formed the field circuit comparatively closed by upper yoke 150 and lower yoke 160, thus can reduce leakage field, improves the stability of drive unit 100.

Such as, in the figure 2 example, upper yoke 150 and lower yoke 160 can be arranged spaced apart along the vertical direction, and upper yoke 150 can be positioned at the top of lower yoke 160, reel 113 can be located between yoke 150 and lower yoke 160, the upper end of reel 113 (such as, the upper end of reel 113 in Fig. 2) can be connected with upper yoke 150 and the lower end of reel 113 (such as, the lower end of reel 113 in Fig. 2) can be connected with lower yoke 160, the central authorities of upper yoke 150 can also be provided with the installing hole 101 (with reference to Fig. 4 and composition graphs 1) passed for driving shaft 130, one end of driving shaft 130 (such as, the lower end of driving shaft 130 in Fig. 2) yoke 150 can be stretched out.Thus, can carry out spacing to the axis of reel 113 by upper yoke 150 and lower yoke 160, thus the reliability of positioning of reel 113 can be ensured.

As shown in Figure 4, permanent magnet 140 can for the straight barrel type extended along the vertical direction.

Such as, with reference to Fig. 4, permanent magnet 140 can be straight barrel type such as tubulose etc., in other embodiments of the present utility model, with reference to Fig. 3 composition graphs 2, permanent magnet 140 also can be arc-shaped, multiple arc-shaped bodies that such as permanent magnet 140 can be split to form by the cylinder of hollow are formed, now, the sectional area of permanent magnet 140 is comparatively large, and the magnetic force of generation is also stronger.The concrete shape of the utility model to permanent magnet 140 is not restricted, and can adaptability select as required in practical application.

As shown in Figure 3, permanent magnet 140 can extend along the vertical direction.

With reference to Fig. 2 composition graphs 1, reel 113 can comprise reel 113 and coil 117.

According to an embodiment of the present utility model, with reference to Fig. 3 and Fig. 4, permanent magnet 140 can the above-below direction of permanent magnet 140 (such as, in Fig. 4) extend and be set in outside or the inner side of reel 113 along the vertical direction.

Such as, in the example of fig. 3, permanent magnet 140 can extend along the vertical direction and be set in the outside of reel 113; In the example of Fig. 4, permanent magnet 140 can extend along the vertical direction and be set in the inner side of reel 113.The utility model does not do concrete restriction to the setting position of permanent magnet 140, can adaptability select as required in practical application.

According to the relay 200 of the utility model second aspect embodiment, comprise upper casing 210, dynamic tactile bridge 220 and drive unit.

Specifically, upper casing 210 can be provided with the first spaced stationary contact bridge 211 and the second stationary contact bridge 212.The dynamic bridge 220 that touches and can disconnect between the first stationary contact bridge 211 and the open position of the second stationary contact bridge 212 removable in the make position of connection first stationary contact bridge 211 and the second stationary contact bridge 212, drive unit can be above-mentioned drive unit 100, and the driving shaft 130 of drive unit 100 can be connected for driving the dynamic bridge 220 that touches to move between open position and make position with the dynamic bridge 220 that touches.Thus, relay 200 can be made to change between the first position and the second position, thus the normal work of relay 200 can be ensured.

See figures.1.and.2, dynamic touching on bridge 220 can be provided with installation via hole 104, at the two ends of dynamic tactile bridge 220 (such as, dynamic top and bottom of touching bridge 220 in Fig. 2) insulating case 201 and lower insulating case 202 can be respectively equipped with, upper insulating case 201 and lower insulating case 202 all can be engaged in the inside that in installation the via hole 104 and lower end of upper insulating case 201 nestedly can be arranged on the upper end of lower insulating case 202, upper insulating case 201 and lower insulating case 202 can be passed in the upper end of driving shaft 130, packing ring 204 can be arranged on the top of insulating case 201 and be positioned at the periphery of driving shaft 130 upper end.Thus, the effect of sealed insulation can be played, thus driving shaft 130 can be avoided to touch bridge 220 directly conducting with dynamic.

In addition, buffer spring 203 can also be provided with between the defining flange 131 and lower insulating case 202 of driving shaft 130, thus, the action of relay 200 can be made more steady.

Be understandable that, when dynamic iron core 120 is positioned at precalculated position, first stationary contact bridge 211 and the second stationary contact bridge 212 will be in conducting state or off-state accordingly, and when the first stationary contact bridge 211 and the second stationary contact bridge 212 conducting when being positioned at aforesaid primary importance with dynamic iron core 120 and dynamic iron core are positioned at the aforesaid second place, the first stationary contact bridge 211 and the second stationary contact bridge 212 are broken as example and are described.

First stationary contact bridge 211 is connected with the first fixed contact 213, second stationary contact bridge 212 and is connected with the second fixed contact 214.When relay 200 is in primary importance, the first fixed contact 213 and the second fixed contact 214 can be connected with the dynamic moving contact 221 touched on bridge 220; When relay 200 is in the second place, the first fixed contact 213 and the second fixed contact 214 can disconnect with the dynamic moving contact 221 touched on bridge 220.

In addition, upper casing 210 and the first stationary contact bridge 211 and the second stationary contact bridge 212 can adopt injection moulding to fix, and the first stationary contact bridge 211 and the first fixed contact 213 and the second stationary contact bridge 212 and the second fixed contact 214 can by being welded and fixed.Moving contact 221 can by being welded and fixed with dynamic tactile bridge 220.Moving contact 221, first fixed contact 213 and the second fixed contact 214 all can adopt alloy material, thus, resistance when fixed contact (comprising the first fixed contact 213 and the second fixed contact 214) contacts with moving contact 221 can be reduced, thus stronger conveyance capacity can be had.

The air gap of dynamic iron core 120 can be contacted with cushion pad 151 by the defining flange 131 of driving shaft 130 lower end to be determined, can reduce so even to eliminate the deviation of artificially installing and causing.Dynamic iron core 120 can be fixed by Laser Welding with driving shaft 130, cushion pad 151 can be fixing by riveting with driving shaft 130, the fastness of drive unit 100 can be ensured like this, the first reference column 111 on reel 113 can coordinate with the mating holes 102 on upper yoke 150, second reference column 112 can match with the mating holes 102 on lower yoke 160, reel 113 and upper yoke 150 and lower yoke 160 location and installation can be realized thus, thus can prevent reel 113 from deflecting, permanent magnet 140 can be located by the first flange 115 on reel 113 and the second flange 116, can prevent permanent magnet 140 from deflecting like this.Upper yoke 150 can be provided with installing hole 101, the electric clearance consistency of relay 200 after installing hole 101 coordinates with driving shaft 130, can be ensured.Upper casing 210 and lower casing can be provided with guide pad with dynamic position of touching bridge 220 corresponding, and guide pad may be used for limiting the dynamic scope of activities touching bridge 220.

Drive unit 100 course of work for relay according to the utility model embodiment is described in detail below in conjunction with Fig. 1 to Fig. 4.

Specifically, can fixedly open around terminal and direction of winding during reel 113 coiling, now can determine the direction producing magnetic field, coil 117 switches on power after both positive and negative polarity by direction, the magnetic direction that coil 117 produces is identical with the magnetic force direction of permanent magnet 140, dynamic iron core 120 can be overcome the elastic force of back-moving spring 121 and buffer spring 203 and be driven by driving shaft 130 and move tactile bridge 220 moving contact 221 is contacted with fixed contact (comprising the first fixed contact 213 and the second fixed contact 214) under the acting in conjunction of permanent magnet 140 with coil 117, coil 117 power-off after adhesive, only maintain attracting state by permanent magnet 140, reverse voltage is led to coil 117 during disconnection, coil 117 can produce the electromagnetic force contrary with permanent magnet 140, the electromagnetic force that the electromagnetic force that coil 117 produces can produce with permanent magnet 140 offsets, dynamic iron core 120 can drive the dynamic bridge 220 that touches that moving contact 221 is separated with fixed contact (comprising the first fixed contact 213 and the second fixed contact 214) by driving shaft 130 under the reaction force of buffer spring 203 with back-moving spring 121.So far the course of work of the drive unit 100 for relay according to the utility model embodiment is completed.

In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.

In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In description of the present utility model, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.

In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.

In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.

In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.

Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment, revises, replace and modification in scope of the present utility model.

Claims (10)

1. for a drive unit for relay, it is characterized in that, comprising:

Upper yoke and lower yoke, described upper yoke and lower yoke are between the upper and lower every layout;

Reel, described reel is located between described upper yoke and lower yoke and also vertically extends, and the upper end of described reel is connected with described upper yoke and lower end is connected with described lower yoke;

Coil, described coil winding is on described reel;

Permanent magnet, the upper end of described permanent magnet is connected with described upper yoke and lower end is connected with described lower yoke, and described permanent magnet is spaced apart multiple along the circumference of described reel;

Flux sleeve, described flux sleeve is located at inside described reel and also extends along the vertical direction;

Dynamic iron core, described dynamic iron core be located in described flux sleeve at least partially slidably;

Driving shaft, described driving shaft is connected with described dynamic iron core and stretches out described upper yoke.

2. the drive unit for relay according to claim 1, is characterized in that, described permanent magnet is extension along the vertical direction and horizontal cross-section is the column of fanning ring.

3. the drive unit for relay according to claim 2, is characterized in that, multiple described permanent magnet is arranged along the circumferential uniform intervals of described reel, and the horizontal cross-section of multiple described permanent magnet is positioned on same annulus.

4. the drive unit for relay according to any one of claim 1-3, is characterized in that, described permanent magnet is located at outside or the inner side of described reel.

5. the drive unit for relay according to claim 1, it is characterized in that, the upper surface of described reel is provided with one or circumferentially spaced apart multiple first reference column, the lower surface of described reel is provided with one or circumferentially spaced apart multiple second reference column, described first reference column inserts in described upper yoke, and described second reference column inserts in described lower yoke.

6. the drive unit for relay according to claim 1, is characterized in that, the upper surface of described upper yoke is provided with cushion pad, and the periphery that described driving shaft stretches out described upper yoke part is provided with the defining flange corresponding with described cushion pad.

7. the drive unit for relay according to claim 1, it is characterized in that, described dynamic iron core is connected with back-moving spring, and described back-moving spring is set in the outside of described driving shaft, and the two ends of described back-moving spring are connected with described dynamic iron core with described upper yoke respectively.

8. the drive unit for relay according to claim 1, it is characterized in that, the upper end of described dynamic iron core is provided with outwardly defining flange, the lower end of described dynamic iron core is set in described flux sleeve slidably, and the radial dimension of described defining flange is greater than the radial dimension of described flux sleeve.

9. the drive unit for relay according to any one of claim 1-3 and 5-8, it is characterized in that, described reel comprises the straight tube extended along the vertical direction, the upper end of described straight tube is provided with outward extending first flange and lower end is provided with outward extending second flange, and described coil winding is between described first flange and described second flange.

10. a relay, is characterized in that, comprising:

Upper casing, described upper casing is provided with the first spaced stationary contact bridge and the second stationary contact bridge;

Dynamic tactile bridge, described dynamic tactile bridge is removable between the make position being communicated with described first stationary contact bridge and described second stationary contact bridge and the open position disconnecting described first stationary contact bridge and described second stationary contact bridge;

Drive unit, described drive unit is the drive unit for relay according to any one of claim 1-9, and the driving shaft of described drive unit is connected for driving the described dynamic bridge that touches to move between open position and make position with the described dynamic bridge that touches.